Annex C

Project Functional Specifications

Annex C page i

TABLE OF CONTENTS

1. INTRODUCTION ...............................................................................................................1

2. PROJECT INFORMATION AND SCOPE.........................................................................1

2.1 PROJECT DESCRIPTION ......................................................................................1

2.2 CONTRACT STRATEGY ......................................................................................2

2.3 PROJECT SCOPE ...................................................................................................9

2.4 TERMINAL POINTS AND INTERFACES .........................................................12

3. DESIGN PRINCIPLES .............................................................................................................15

3.1 DESIGN REQUIREMENTS .................................................................................15

3.2 PERFORMANCE REQUIREMENTS ..................................................................15

3.3 GENERAL REQUIREMENTS .............................................................................18

3.4 STANDARDS AND STATUTORY REQUIREMENTS .....................................19

4. PARTICULAR TECHNICAL REQUIREMENTS ...................................................................21

4.1 INTRODUCTION .................................................................................................21

4.2 MECHANICAL PLANT AND SYSTEMS REQUIREMENTS ..........................21

4.2 ELECTRICAL PLANT AND SYSTEMS REQUIREMENTS .............................23

4.4 CIVIL REQUIREMENTS .....................................................................................29

4.5 ENVIRONMENTAL REQUIREMENTS .............................................................31

5. QUALITY ASSURANCE, INSPECTION, COMMISSIONING AND TESTING ..................33

5.1 GENERAL .............................................................................................................33

6. SITE DESCRIPTION ...............................................................................................................33

6.1 SITE LOCATION AND REQUIREMENTS ........................................................33

7. PROJECT ADMINISTRATION ...............................................................................................34

7.1 GENERAL .............................................................................................................34

Annex C page ii

FIGURE

NO. DESCRIPTION

Figure 4-3 Configuration of GITET Mandirancan with the Introduction of PLTU Central

Java

Figure 6-1 GRID DEVELOPMENT OF CENTRAL JAVA AND YOGJAKARTA

REGION 2010-2015

Other: PLN design standards for 500kV transmission systems (in Data Room)

PLN design standards for substations (in Data Room)

Annex C page 1

1. INTRODUCTION

These functional specifications (Functional Specifications) describe the minimum technical

requirements for the development of the Project. The Plant will be located on a site in the

Pemalang area.

A jetty and unloading facilities shall be constructed by the SELLER to accommodate the vessels

that will deliver coal for use at the Plant.

PLN will purchase all energy from the Plant and transmit the energy to the load centers through

the existing 500 kV transmission system. The evacuation of electric power generated by the

Plant will be at 500 kV through a new 500 kV switchyard adjacent to the Plant to be built, owned

and operated by the SELLER (Interconnection Facilities). A transmission line spur consisting

of double circuit 500 kV transmission lines and a new substation (the Special Facilities)

connecting the new switchyard to the existing 500 kV transmission system and connecting the

existing 500 kV transmission system to the new switchyard will be built by the SELLER and

turned over to PLN upon its completion.

The Plant will use domestic Indonesian coal furnished by the SELLER and which complies with

the minimum technical specifications listed in Section 2.4.1 below. The SELLER will be

responsible to source, procure, transport, unload and store the coal for the Plant.

The SELLER will be responsible for developing all geological, geotechnical and environmental

information needed, including an AMDAL and other necessary Site investigations. The Plant

will be required to comply with environmental standards and safeguards of the Laws of

Indonesia and other environmental standards as may be required by the project lenders. The costs

of any environmental impact assessment, Site investigations and investigations to ensure that any

Indonesian or lenders requirements are satisfied will be borne entirely by the SELLER.

A description of the AMDAL process is provided in Annex K of the RFP.

2. PROJECT INFORMATION AND SCOPE

2.1 PROJECT DESCRIPTION These Functional Specifications describe the minimum functional requirements for a two-Unit

coal-fired Plant using supercritical or ultra-supercritical technology with a nominal Plant

capacity of 1,600 MW (net) to 2,000 MW (gross) that the SELLER shall develop, build and

operate in accordance with the PPA.

The exact configuration of the Plant shall be determined by the SELLER, subject to the

limitations specified in this Annex C. The SELLER will be responsible for selecting the location

and obtaining the land for the Site and the Special Facilities Site.

Annex C page 2

The SELLER will be responsible for constructing the seawater cooling intake piping system and

cooling water discharge structures. The SELLER will also be responsible for constructing a

jetty extending from the site a sufficient distance into the Java Sea to accommodate coal

shipment vessels and which includes coal unloading and conveyance facilities.

During site development and construction of the Central Java units, the SELLER will install a

cooling water intake structure and a discharge structure to the Java Sea that will accommodate

the required flows to and from the power plant. The SELLER will also construct the required

pumping structure for the Plant.

The Plant equipment and systems shall include all the systems, facilities, equipment, materials,

and works required to ensure safe, reliable, and economic operation of the Plant such as coal

handling systems, water treatment and storage facilities, and all the other necessary auxiliary and

ancillary equipment required for the safe, reliable and efficient operation of the Plant. The Plant

shall be constructed of new equipment and materials only.

2.1.1 Proven Design and Technology Requirements

The Plant is required to be highly reliable and efficient. It is essential that the key components of

the Plant be of proven design and technology, which means that power plants of similar design

must have been engaged in reliable commercial operation for at least three (3) years at three (3)

different projects situated on different sites1. A project will be considered to have been in

reliable commercial operation for the purposes of this requirement if the equipment proposed

has an average forced outage factor that has not been above five percent (5%) and its average

availability factor has not been below eighty percent (80%) for the duration of the commercial

operation period. Forced outage factor and average availability factor can be provided by the

power plants of similar design or provided from manufacturer data based on warranty claims and

service calls.

2.2 CONTRACT STRATEGY The SELLER shall be fully responsible for the financing of the Project, and the design, supply,

delivery, erection, commissioning, operation, and maintenance of the complete Plant for the term

of the PPA. Particulars of the Project performance requirements are given elsewhere in these

Functional Specifications. The SELLER shall coordinate plans and activities with PLN during

the design, construction, commissioning, and operation of the Project.

These responsibilities will be contractually embodied principally in the PPA between the

SELLER and PLN as the power purchaser and will include not only the requirements regarding

the Plants Net Dependable Capacity and availability, but also stipulations of how the Plant will

interface with PLNs Grid System in terms of start up times, performance ramp rates, ability to

generate with falling system frequency, etc. in accordance with the PPA where applicable.

1 A plant consisting of two or more units, constructed under a single PPA or EPC contract does not qualify as two or

more different projects. However, two or three units installed at the same site, under different PPAs or EPC

contracts qualify as two or three projects, respectively.

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2.2.1 Site

The SELLER shall be fully responsible for the Site selection and acquisition, obtaining of any

permits for its use and the design, supply, delivery, erection, commissioning, operation, and

maintenance of the complete Plant on the Site for the term of the PPA. Neither PLN nor the

Government shall have any obligation to assist with Site selection or acquisition, or obtaining

permits.

2.2.2 Special Facilities Site

The SELLER shall be fully responsible for selection and acquisition of the Special Facilities

Site, obtaining the necessary land and any necessary permits for its use and the design, supply,

delivery, erection, commissioning and turning over to PLN of the Special Facilities including a

substation and tie-in interconnections to the existing 500 kV transmission system, in accordance

with the Project Milestone Schedule. The Special Facilities shall be designed, procured,

constructed, tested and commissioned on the Special Facilities Site in accordance with PLN

design standards and specifications for high voltage transmission systems.

Neither PLN nor the Government shall have any obligation to assist with Special Facilities Site

selection or acquisition, or obtaining permits.

2.2.3 Tie-in to PLNs Grid System

PLN will provide locations for the SELLER to use as connection points for connecting the

transmission lines from the substation included in the Special Facilities by shortspan to the

existing 500kV transmission system. The exact location of the connection points will depend on

the Special Facilities Site selected by the SELLER.

2.2.4 EPC Contract

The SELLER shall enter into an EPC Contract for the design, engineering, procurement,

construction, testing and commissioning of the Plant with an EPC Contractor meeting the

experience requirements of Section 2.2.5. The Bidder must provide with its Proposal a

memorandum of agreement attaching a detailed term sheet initialed by the EPC Contractor and

Bidder indicating that if the Bidder is selected as the Winning Bidder, the EPC Contractor

intends to enter into an EPC Contract with the SELLER to provide EPC services on the terms set

out in the term sheet and which terms include the following:

Commitment to meet the technical requirements detailed in this RFP

Scope that includes the totality of the design, engineering, procurement, erection, construction, testing, commissioning and warranty obligations required to deliver

a fully operational power plant

Performance of the EPC Contract on a firm, fixed price, turnkey basis with completion of the EPC Contract on a date certain consistent with the Project

Milestone Schedule

In the case of a consortium EPC Contractor, joint and several liability among the members in respect of the totality of the obligations and liabilities of the

EPC Contractor pursuant to the EPC Contract, or the inclusion of an EPC Lead

Member that provides a wrap-around guarantee for the totality of the obligations

Annex C page 4

and liabilities of the EPC Contractor pursuant to the EPC Contract

Equipment and Plant warranties/guarantees

Setting in place by the EPC Contractor, or its Affiliate, of a performance bond or other acceptable performance guarantee, payable when called by the SELLER

Reasonable and customary liquidated damages for delays in performance and for failure to meet required capacity and heat rate

Each Bidder shall provide with its proposal copies of the most recent Annual Report of the

proposed EPC Contractor, or its parent organization.

2.2.5 EPC Contractor Qualifications and Major Equipment Requirements

Each Bidder shall nominate a proposed EPC contractor to design, engineer, procure equipment

and materials, and construct the Project. The Bidders proposed EPC Contractor shall have

appropriate experience in engineering, procuring for and constructing large coal-fired power

plants so as to satisfy the EPC experience criteria in Section 2.2.5.1 below.

The proposed EPC Contractor shall also have international experience which includes

engineering, procurement for and construction of thermal power projects in the international

market so as to satisfy the requirements of Section 2.2.5.2 below.

The proposed EPC Contractor shall propose equipment suppliers that meet the criteria set forth

in Sections 2.2.5.3 and 2.2.5.4.

2.2.5.1 EPC Contractor large coal-fired power plant experience

The proposed EPC Contractor (directly or through an Affiliate) shall have successfully provided

engineering, procurement and construction services to have built at least two (2) coal-fired power

generation projects, with all of the following characteristics:

Each project shall have a unit (or units) with a capacity of at least 6002 MW (gross)

Each project shall use pulverized coal technology

Each of the projects shall use supercritical technology or if a Bidder proposes ultra-supercritical technology, then at least one of the projects shall use ultra-supercritical

technology3

Each project shall be connected to the national power grid(s) in the country(ies) in which such projects are located

2 If Bidder offers a configuration of 2 x 800 MW (net) or higher but less than 2 x 900 MW (net), 600 MW shall be replaced

with 500 MW.

3 For the purposes of this Section 2.2.5, reheat steam temperatures above 580oC shall be considered as ultra-supercritical

Annex C page 5

2.2.5.2 EPC Contractor international experience

The proposed EPC Contractor must have successfully constructed at least two (2) thermal

power projects in a country or countries other than the country where the proposed EPC

Contractor is domiciled. The requirements of this section are independent of the

technology / fuel or size of a project.

If the projects cited to satisfy the requirements of Section 2.2.5.1 also meet the

requirements of Section 2.2.5.2, Bidder need not submit additional projects that meet the

requirements of Section 2.2.5.2.

2.2.5.3 Other requirements

No power generation project completed by a proposed EPC Contractor may be submitted to

satisfy the criteria in Sections 2.2.5.1 and 2.2.5.2 unless (1) it has received all relevant permits,

including environmental clearances to achieve commercial operation and (2) it has been

completed and in commercial operation for at least three (3) years as of the Bid Submission

Date.

If the cited projects were constructed on Turnkey EPC Basis, the proposed EPC Contractor, or

the EPC Lead Member of a proposed EPC Contractor consortium if a consortium is proposed to

be utilized, shall have been the sole EPC contract member, or shall have been the EPC Lead

Member of an EPC consortium, which performed the work on the completed power projects

which are submitted to meet the experience requirements of Sections 2.2.5.1 and 2.2.5.2.

If the cited projects were not constructed on Turnkey EPC Basis and a sole EPC Contractor is

proposed, such sole EPC Contractor must have performed turbine erection, boiler erection,

associated balance of plant (BOP) works and civil works for completed power projects that meet

the experience requirements of Sections 2.2.5.1 and 2.2.5.2, save in the case of projects cited to

meet the civil works experience, the cited projects need not have utilized supercritical or ultra

supercritical technology.

If the cited projects were not constructed on Turnkey EPC Basis and a consortium is proposed to

be utilized as the proposed EPC Contractor, such consortium shall include an EPC Lead Member

and possess experience, via members or sub-contractors, in turbine erection, boiler erection,

associated BOP works and civil works that each (member or sub-contractor) individually

performed the relevant work on completed power projects that meet the experience requirements

of Sections 2.2.5.1, save in the case of the civil works member or sub-contractor, the cited

projects need not have utilized supercritical or ultra-supercritical technology. For the avoidance

of doubt, the EPC Lead Member may be any one of the consortium members that satisfies the

experience in turbine erection, boiler erection or associated BOP works.

Further, the proposed sole EPC Contractor or the proposed EPC Lead Member (as applicable)

shall meet the experience requirements of Sections 2.2.5.1 and 2.2.5.2 and each project cited by

such proposed sole EPC Contractor or the proposed EPC Lead Member (as applicable) to meet

Annex C page 6

the experience requirements of Sections 2.2.5.1 and 2.2.5.2 shall meet the following criteria:

built within 10% of the original cost estimate,

built within two months of the original schedule

built without environmental violations during construction and operation

performance test results for capacity and heat rate met guaranteed levels.

Each Bidder shall provide the information detailed in Annex D- Exhibit 6 as evidence of the

proposed EPC Contractors required experience and conformance with these requirements.

Bidders should note that if none of the qualifying projects cited by a Bidder to satisfy the

requirements of Sections 2.2.5.1 and 2.2.5.2 were constructed on Turnkey EPC Basis, the PPA

shall require that the amount of Bank Guarantees (Stage II only) shall be increased to USD 105

million if such Bidder is selected as Winning Bidder.

2.2.5.4 Boiler and Steam Turbine supplier requirements

Supplier Experience

The proposed EPC Contractor shall propose using boiler and turbine suppliers each of whom

have designed and manufactured similar equipment which has been in use in at least two (2)

supercritical units, of at least 900 MW (gross) size each, that have each been in successful

operation for at least two (2) years as of the Bid Submission Date. If the Bidder proposes to use

ultra-supercritical technology, then the proposed EPC Contractor shall propose using boiler and

turbine suppliers each of whom have designed and manufactured similar equipment which has

been in use in at least two (2) ultra-supercritical units, of at least 900 MW (gross) size each, that

have each been in successful operation for at least two (2) years as of the Bid Submission Date.

For the purposes of Annex C and Annex D Exhibit 6, the term similar equipment refers to

equipment based on similar, but not necessarily identical, design and technology to that being

proposed for the Project which may vary according to site conditions.

Each Bidder shall provide the information detailed in Form 3B of Annex D: Exhibit 6 as

evidence of the proven experience of the boiler and steam turbine supplier.

Equipment Design and Technology

Boiler and turbine supplier designs shall be based on designs which meet the Proven Technology

requirements as set out in Section 2.1.1. Section 2.1.1 applies to industry-wide experience and

not necessarily to a particular suppliers experience. Suppliers can meet the Proven Technology

requirement based on other supplier(s)s technology/design if they have a valid license or

agreement for such technology/design for use in the Facility. For the avoidance of doubt,

suppliers must meet the Supplier Experience criteria above and may not use the experience of a

licensor to meet the Supplier Experience requirements of this Section 2.2.5.3.

Each Bidder shall provide the information detailed in Form 3A of Annex D: Exhibit 6 as

evidence of the proven experience of the boiler and steam turbine.

Annex C page 7

2.2.5.5 Major component equipment experience requirements

The major equipment components (other than the boiler and steam turbine) which are critical to

the operation of the Plant are identified in Section 4.2 of Annex D-Exhibit 6, namely:

Generators

Feedwater pumps and drivers

Flue gas desulphurization (FGD)

Control system

Coal handling equipment

The proposed equipment for the Project shall meet the Proven Technology requirements of

Section 2.1.1 which is demonstrated in this case by considering their prior use in utility scale

power generating units of at least 500MW. Section 2.1.1 applies to industry-wide experience and

not necessarily to a particular suppliers experience. Suppliers can meet the Proven Technology

requirement based on other supplier(s)s technology/design if they have a valid license or

agreement for such technology/design for use in the Facility.

Each Bidder shall provide the information detailed in Form 3A of Annex D: Exhibit 6 as

evidence of the proven experience of the above major components.

2.2.6 O&M Operator Qualifications and Requirements

Each bidder shall nominate an O&M Contractor to operate and maintain the Project (the O&M

Contractor). The Bidders O&M Contractor shall have appropriate experience operating coal-

fired projects so as to satisfy the O&M Experience Criteria below.

Each Bidder must provide the name of their O&M Contractor and details of how such O&M

Contractors experience meets the O&M Experience Criteria below. Each Bidder shall provide

with its proposal copies of the most recent Annual Reports of the proposed O&M Contractor, or

its parent organization In addition, the Bidder must provide a copy of a signed memorandum of

agreement attaching a detailed term sheet initialed by each of the O&M Contractor and the

Bidder, indicating that if the Bidder is selected as the Winning Bidder, the O&M Contractor

intends to enter into an O&M Contract with the Project Company to be set up by such Bidder to

be the counterparty to the PPA, to provide O&M services on the terms set out in the term sheet.

Use of an Owner-Operator model is acceptable, provided that a Sponsor, or Affiliate of a

Sponsor meets the experience and expertise above to provide these services. The requirement is

that the operations be undertaken through an Agreement with a Sponsor or its Affiliate and the

SELLER to provide services which will allow the SELLER to meet the performance objectives

of the PPA. Bidder shall provide an executed Memorandum of Understanding (MOU) which

describes the conditions to be included in a long-term agreement between the Owner-Operator

and the SELLER. The agreement shall, as a minimum:

Annex C page 8

Commit to provide experienced personnel and support services (expertise, systems and equipment) to the SELLER and include a scope of those services and personnel to be

provided

Include standards of performance reflecting the obligations of the SELLER under the PPA (eg, Plant Availability, Scheduled Outage coordination with PLN)

Include commercial terms which are compatible with commercial terms included in the PPA

Include lines of communication between SELLER and Sponsor or Sponsor Affiliates providing the O&M personnel and services

The O&M Contractor (either directly or through an Affiliate) shall have successfully operated

and maintained at least two (2) coal-fired power generation units, each unit having a capacity

of at least 800 MW (gross) and each using pulverized coal technology with at least one of the

units using supercritical technology. If a Bidder proposes to utilize ultra-supercritical

technology, then at least one of the units cited to meet the experience criteria of this Section 2.2.6

shall have utilized ultra-supercritical technology.

Successfully operated and maintained means all the following:

the units should have been completed and in commercial operation for at least three (3) years;

the O&M contracts (if applicable) for each of the cited units have not been terminated or suspended as a result of a default by the O&M Contractor;

no penalties or liquidated damages have been paid under any power purchase agreement for any of the cited units where such penalties or liquidated damages

exceed fifteen percent (15%) of the total annual capacity payments payable in

respect of the unit in question in any given year;

the average forced outage factor shall not have been above five percent (5%) and the average availability factor shall not have been below eighty percent (80%) for

the duration of unit operation under the power purchase agreement or O&M

contracts (if applicable), whichever is longer, for each of the cited units; and

there have been no material infringements of applicable environmental and/or occupational health and safety laws or regulations at any of the cited units.

In respect of each power unit cited to meet the O&M Experience Criteria, each Bidder

must provide details demonstrating how such criteria are met as well as details of the

year commissioned, name of owner and representative (phone and facsimile number),

data on availability, Gigawatt hours (GWh) produced for at least one year, and the

Forced Outage Rate (as defined in appendix G of the PPA).

Each Bidder shall provide the information detailed in Annex D-Exhibit 6 as evidence of the

O&M Contractors required plant operating experience and conformance with these

requirements.

Annex C page 9

2.2.7 Local Content

Local labor, materials, and manufacturing should be used to the maximum feasible extent and in

compliance with applicable laws.

2.2.8 Transfer of Plant

The Plant will be overhauled, repaired and tested upon the expiry of the PPA and transferred to

PLN, or its designee, in good order with the appropriate tools, parts, software and records as

described in Section 3.3.2 below.

2.2.9 Operational Performance

The Plant will interface with PLNs Grid System in terms of start up times, performance ramp

rates, ability to generate with fluctuating system frequency and voltage levels, providing

protective relaying and metering in accordance with the PPA all in full compliance with the

Java-Bali Grid Code

2.3 PROJECT SCOPE The Plant shall comprise a complete coal-fired Plant with a capacity of between 1,600 MW (net)

and 2,000 MW (gross) comprised of two equally sized units and all support facilities required for

commercial operation. The maximum size of a unit is limited to 1000 MW gross rating for

stability considerations.

2.3.1 Scope of Work

The scope of work to be provided by the SELLER for engineering, procurement, and

construction of the Plant shall include, but not be limited to, the following:

the overall management and control of the works

control and supervision of the Contractors and sub-contractors

provision of all labor, supervision, management, materials, equipment, on-Site storage and material handling and control of the complete works

Site investigations and surveys, as required

preparation and processing of an Environmental Impact Assessment

obtaining all relevant Consents and Permits

engineering and design

detailed engineering

procurement

expediting

inspection

manufacture and fabrication

painting

Annex C page 10

packing, shipping, delivery to Site and insurance

Site safety and security

construction and erection

protection and preservation

testing and pre-commissioning

commissioning and testing

Performance Tests and Reliability Tests

operation and maintenance of the Plant during the term of the PPA

other services as specified or necessary to complete the Project

temporary construction works and facilities, including camp facilities if required

provision of documentation

operators living quarters and facilities, if required

Transfer of the Plant at end of Term of the PPA

2.3.2 Scope of Supply

The Plant will comprise, but not necessarily be limited to the following:

Two pulverized coal fired boilers of equal size using supercritical or ultra-supercritical (USC) technology

Two steam turbine generators, with a maximum size of 1000 MW gross rating

Electrostatic precipitators or bag houses

Flue gas desulfurization (FGD) systems (limestone based) - other than limestone based FGD systems are acceptable as long as Bidder

meets environmental emissions requirements, both airborne and in

seawater discharge and meets the requirements using the specified

coals (Primary, Secondary and Qualifying Alternate Coal).

Selective catalytic reduction (SCR), if required to meet NOx emission requirements

Stack(s) tall enough to meet the ambient air quality requirements

Continuous Air Emissions Monitoring Systems

Surface condensers

Condensate systems

Annex C page 11

Feed water systems

Steam systems

Once through (or circulating) sea water condenser cooling system including

Sea water intake piping and structures

Sea water pump house

Cooling water piping

Discharge to the sea

Fuel unloading jetty from the site to seawaters with sufficient depth to accommodate vessels delivering coal

Coal stacker/reclaimer system

Coal ship unloading system

Coal conveyor transport systems, crushers and pulverizers

Coal storage for at least 30 days (at minimum capacity factor of 80%)

Start-up and supplemental fuel unloading, handling, and storage system

Limestone storage and handling system

FGD by-product handling and disposition

Raw water system including necessary storage tanks and pumps

Water Desalination Plant

Water treatment systems including pre-treatment and de-mineralization

Wastewater treatment systems

Service water and auxiliary cooling water, and potable water systems

Fire Detection and Protection System

Ash handling system

Service and instrument air systems

HVAC systems

Generator step-up transformers to connect to the 500 kV switchyard

Auxiliary power and start-up transformers, as required

500 kV switchyard ( Electrical Interconnection Facilities)

Special Facilities including 500 kV transmission lines, substation and related equipment and components between the Electrical

Annex C page 12

Interconnection Facilities and the existing 500 kV transmission

system and including making the interconnections to the existing lines

on a route to be determined by the SELLER.

Distributed Control System and necessary instrumentation and control equipment

Automatic Generation Control (AGC)

Emergency Diesel generators to provide for safe plant shutdown

Electrical switchgear of various voltages

Direct current switchgear, batteries, chargers and inverters.

Site fencing and security

Earthing and lightning protection systems

Control and Administration buildings

Mosque

Workshops and laboratories

Spare parts inventory

SCADA & communication systems

The SELLER shall include any additional plant and equipment necessary to meet

the Plant design, performance, operation, environmental criteria and Prudent

Operating Practices but which are not specifically identified above, and to form a

complete power project which is fit in all respects for its intended purpose and

use.

The SELLER will be required to meet the Laws of Indonesia.

2.4 TERMINAL POINTS AND INTERFACES The SELLER shall be responsible for making the connections required at all terminal (interface)

points as specified.

2.4.1 Fuel Supply - Coal

The fuel shall be domestic Indonesian coal, sourced and supplied by the SELLER. Coal specified

by the SELLER shall require the coal to: (1) have a minimum calorific value of 4,000

kcal/kg(HHV4) (2) have a maximum calorific value of 5,500 kCal/kg (HHV); (3) all other

criteria, such as HGI, moisture, ash, S, etc, should be in accordance with Appendix S of the PPA.

4 On GAR basis

Annex C page 13

Reference coal content shall be 5,000 kCal/kg(HHV). As a minimum requirement, the coal

unloading jetty shall be capable of accommodating barges with 7 m draft and 14,000dwt

capacity. On site coal handling will also be the responsibility of the SELLER, and adequate

space for unloading, transfer and stacking and reclaiming coal shall be provided.

2.4.2 Fuel Oil

Fuel Oil for start up, supplemental firing, and the emergency diesel generator will be provided by

the SELLER, along with unloading, storage and distribution facilities.

2.4.3 Limestone

Limestone and all associated receiving, handling, storage and treatment facilities as required for

FGD systems is to be provided by the SELLER.

2.4.4 FGD by-product

The SELLER shall be responsible for the disposition of any solid and liquid by-products from

the FGD system. The FGD by-product disposal area shall be separate from the ash disposal area.

2.4.5 Water

The SELLER is responsible for entering into any contractual arrangements necessary to meet the

requirements specified below.

(a) Raw Water

Raw water used by the SELLER shall be provided via desalination

(b) Potable Water

The SELLER will have to treat raw water, if required, to use as potable water. The

SELLER may choose to use bottled water for drinking or other acceptable option.

(b) Condenser and Plant Cooling Water

The Plant will be cooled by a seawater system. The intake piping and structures will be

provided by the SELLER. The pumping and cooling water discharge facilities will also

be provided by the SELLER. The SELLER will be responsible for constructing the

cooling water pumping station required for the Plant.

(d) Construction Water

During construction the SELLER shall develop and distribute a source of water for

construction.

(e) Boiler Make-up Water

The SELLER shall use the raw water to provide boiler make-up water to meet the

requirements of the Plant.

Annex C page 14

(f) Sanitary and Sewer Facilities

The SELLER shall provide for adequate sanitary facilities during Plant construction and

Plant operations, and treat sanitary drains to comply with applicable discharge standards

of the Government prior to discharging it to the cooling water discharge canal.

(g) Drainage

Oily water and chemical drains shall be treated to an approved quality before being

discharged to the cooling water discharge canal. All drains and other liquids, if

discharged from the Plant shall at all times comply with appropriate environmental

regulations and meet the quality standards specified by the Government and the EHS

Guidelines.

2.4.6 Electrical

500 kV Switchyard and Interconnection to PLNs Grid system

The SELLER will construct a 500 kV switchyard for the Plant (Electrical Interconnection

Facilities) which will interconnect with the Special Facilities. The interfaces of the Electrical

Interconnection Facilities with the Special Facilities are the gantrys in the 500kV switchyard

bays that connect to the Special Facilities transmission lines. The Special Facilities transmission

line circuits shall remain intact under breaker failure conditions affecting any breaker in the

Electrical Interconnection Facilities.

The SELLER, in coordination with PLN, will design and install main and back up protection

relays with zones that extend into the switchyard, Special Facilities (see 4.3.11) and the power

plant, particularly the protection of the Generator Step-up Transformers and generators.

The SELLER will provide communication links to the power grid SCADA system including

adequate Remote Terminal Unit (RTU) points to accommodate PLNs Java Control Center

requirements.

2.4.7 Communications, Control, and Instrumentation

The SELLER shall provide all line relay equipment and communication equipment and RTUs to

interface required Plant information with the Java Control Center, as required by PLN. The

specifications of such relays, RTUs and communication equipments shall be matched with the

existing equipment being used by PLN and be in accordance with Appendix I of the PPA.

2.4.8 Ash Disposal (fly ash)

Ash disposal is to be dry utilizing an onsite land fill. A pneumatic ash collection system is to be

provided along with ash storage silo(s) and an onsite land fill. The SELLER shall develop the

design to optimize ash sales for other uses.

Annex C page 15

3. DESIGN PRINCIPLES

3.1 DESIGN REQUIREMENTS The Plant shall be of proven design, built to appropriate internationally recognized standards,

and complying with all the applicable statutory codes and regulations. Equipment suppliers for

the Plant can meet the proven design and technology requirements of Section 2.1.1 based on

another supplier(s)s technology or design if they have a valid license or agreement for such

technology/design, including allowance under the license to export the technology.

Plant reliability, availability, and maintainability consistent with high efficiency, are of

paramount importance.

The Plant shall be designed and equipment should be sized to permit reliable base load operation

over the complete range of anticipated ambient conditions without limiting the plant output.

The Site is in an area impacted by factors that may affect construction of the Plant. Thus these

agents must be taken account in design. The factors include:

Erosion agent from salt air of coastal region for the outdoor construction;

Erosion agent from sea water for reinforced concrete construction and structural steel that contact directly to the sea water;

Seismic zone 25 (bedrock acceleration of 0.15g to 0.2g for 500-year return period)

3.2 PERFORMANCE REQUIREMENTS

3.2.1 Operating Regime

The Plant shall be designed primarily for base load operation but it must also be capable of

operating continuously at reduced loads, if required. The Plant will be required to operate at high

net capacity factors (plant factors) and in accordance with PPA Appendix L. The Plant will be

normally frequency controlled rather than load controlled. Governor and droop settings etc shall

be in accordance with the Java-Bali Grid Code.

There is no requirement for the Plant to operate continuously above the manufacturers declared

base load maximum continuous rating (MCR) at given ambient conditions and the physical

condition of the Plant. However, during emergency conditions (as determined by the Java-Bali

grid control), the plant output shall be increased to VWO conditions for a limited period.

The Plant should be capable of automatic operation and control at loads between 100% and 40%

of Net Dependable Capacity without supplemental firing. When only one unit is in operation, the

operating range of such unit shall be from 20% to 50% of the Plant Net Dependable Capacity,

without supplemental firing.

5 Indonesian National Standard SNI 03-1726-2002 as expected to be revised

Annex C page 16

3.2.2 Plant Start Up and Loading

The Plant can be started using electrical energy provided through the 500 kV switchyard. In

order to meet the PLN dispatch requirements, the Plant shall be designed to meet or improve

upon the minimum start up time and loading rates as proposed by the SELLER and which will be

included in the PPA, Appendix B. The SELLER will be reimbursed for excess starts of each Unit

in a Contract Year as supplemental charges for start up from cold, warm and hot conditions per

Appendix G of the PPA.

For each Unit, the following definitions shall apply:

a. cold start: A resynchronization after more than 48 hours of

continuous shutdown.

b. warm start: A resynchronization after more than 18 hours but

less than 48 hours of continuous shutdown.

c. hot start: A resynchronization after less than 18 hours of

continuous shutdown

3.2.3 Start Up Times and Load-Ramping Rates

The SELLER shall provide the start up times, from start initiation to synchronization, and the

load-ramping rates, from zero to rated output, that the Plant will achieve under cold, warm, and

hot start up conditions. The start up times and the load-ramping rates shall be comparable with

other plants within this size range.

3.2.4 Availability and Reliability

The Plant shall be designed to achieve the levels of availability and reliability normally expected

for similar modern coal fired power plants, and as required by the PPA. It is expected that the

Plant will operate as a base load plant based on economic dispatch and will be designed to meet

an average lifetime Equivalent Availability Factor of no less than 88%. The Plant will be

required to achieve an annual Actual Availability Factor meeting or exceeding the Projected

Availability Factors for each operating year which will be specified in Appendix G of the PPA.

In this specification the Equivalent Availability Factor formula is defined as:

Where:

A = Equivalent Availability Factor

DC = Average Dependable Capacity for the year

Y = Number of years

MOcap = capacity reduction during Maintenance Outages

8760

)(8760

DC

SOHSOFOHFOMOHMODCA

capcapcap

Annex C page 17

MOH = Maintenance Outage hours

FOcap = capacity reduction during Forced Outages

FOH = Forced Outage hours

SOcap = capacity reduction during Scheduled Outages

SOH = Scheduled Outages hours

3.2.5 Operating and Control Requirements

It is anticipated that during early operating years the Plant will operate as a base load power

generating station, generating close to the Plants rated output for much of the time. In later

years it is possible that the Plant may be required to operate on a cycling basis and that the Plant

and its control system must be designed to maximize efficient operation, under both these

operating regimes

The control and supervision of the Plant shall be carried out in a Central Control Room, from

where the generators will normally be started, auto-synchronized, and initially loaded. Provision

shall be made to allow the Plant output to be controlled remotely by PLN through the AGC

program installed at PLNs Java Control Center. The Plant shall be designed to ensure that

automatic hot, warm and cold starts, as well as shut downs, are achieved on a reliable basis

throughout its design life. The Plant shall also meet the following steady state and transient

operating conditions:

a. Operate under automatic control for sustained periods at all loads above

minimum controllable, for the given ambient temperature range.

b. Provide the necessary equipment to ensure safe shut down of the Plant

under all foreseeable circumstances.

c. Automatic controls shall account for boiler and turbine operating

conditions (hot, warm or cold), in setting the ramp rates for start up and

loading.

d. Each turbine generator shall be provided with a flexible governing system

whose characteristics can be readily adjusted to accommodate any changes

in the operating regime that may arise during the life of the Plant. The

governing system should be provided with a set of control algorithms that

allow Plant operators to change governor control parameters, if required.

3.2.6 Plant Maintenance

Maintenance of the Plant which requires an outage of a Unit or the Plant shall be scheduled in

accordance with Appendix L of the PPA. Maintenance of the Plant can also be scheduled during

other alternative periods as PLN may agree.

Annex C page 18

3.3 GENERAL REQUIREMENTS

3.3.1 Design Life

The Plant shall be designed for a life of forty (40) years, and the SELLER shall be responsible

for owning, operating and maintaining the Plant for the term of the PPA.

3.3.2 Transfer

Following the expiry of the PPA, ownership of the Plant will be transferred in accordance with

the terms of the PPA.

3.3.3 Staffing Levels

The Plant shall be designed to require the minimum number of operating and maintenance staff,

consistent with high operational safety, reliability and economy. SELLER shall employ local

staff to the extent possible.

3.3.4 Sparing Philosophy

Redundancy of design shall be such that the performance of primary and auxiliary equipment

shall be sufficient to meet the availability requirements of the Plant. No single failure of an

active component shall result in more than one Unit being affected.

3.3.5 Protection against adverse ambient conditions

The Plant shall be designed to withstand extreme ambient conditions as determined in

accordance with Section 6.2 and listed in Table 9.3-1 of Annex D: Exhibit 6 to which it may be

exposed and to continue to function normally, within appropriate range of de-rating factors to

account for such ambient conditions.

3.3.6 Finishing and Surface Preparation

Steel structures of the Plant shall be painted and surface protected suitably for local conditions in

accordance with the standards and practices of the Steel Structures Painting Council.

3.3.7 Thermal Insulation

Insulation shall be provided where necessary for personnel protection and to minimize heat

losses.

3.3.8 Hazardous Areas

Where possible, hazards should be reasonably avoided. Where appropriate, areas shall be

classified to the relevant sections of the Indonesian environmental regulations and the NFPA, or

other recognized standards. Suitably certified equipment shall be used in the designated

hazardous areas.

3.3.9 Units of Measurement

The units of measurement used throughout the Project shall be expressed in the SI system, except

that pressure shall be expressed in kg/cm2 (or Bar) and temperature shall be expressed in degrees

Annex C page 19

Celsius (C). Energy content of fuel shall be expressed in kCal/kg. Heat rates shall be expressed

in kCal/kWh.

3.4 STANDARDS AND STATUTORY REQUIREMENTS

3.4.1 Standards

All Plant components, systems, and equipment shall be designed, manufactured, assembled and

tested at manufacturers works, installed and, after installation at the Site, shall be tested and

commissioned, in accordance with applicable internationally recognized standards, and statutory

regulations, including those specifically listed in these Functional Specifications.

Each Bidder shall provide with its Proposal a schedule of all the key codes proposed to be used

for the construction, testing, etc., of the Plant.

Any of the standards published by the authorities listed here are acceptable:

ACI American Concrete Institute

AISC American Institute of Steel Construction

AISI American Iron and Steel Institute

ANSI American National Standards Institute

API American Petroleum Institute

ASHRAE American Society of Heating, Refrigeration & Air Conditioning

Engineers

ASME American Society of Mechanical Engineers

ASTM American Society for Testing and Materials

ASTI

AWS American Welding Society

AWWA American Water Works Association

BS British Standards Institution

CEN European Committee for Standardization

CENELEC European Committee for Electrotechnical Standardization

DIN German Standardization Institute

HEI Heat Exchange Institute

HIS Hydraulic Institute Standard

IAPH International Association of Ports and harbors

ICORELS International Commission for Reception of Large ships

IEC International Electrotechnical Commission

IEE Institute of Electrical Engineers

IEEE Institute of Electrical and Electronics Engineers

IP Institute of Petroleum

ISO International Standards Organization

JIS Japanese Industrial Standards

MSS Manufacturers Standardization Society

NEMA National Electrical Manufacturers Association

NFPA National Fire Protection Association

PIANC Permanent International Association of Navigation Congresses

SSPC Steel Structures Painting Council.

Annex C page 20

TEMA Tubular Exchanger Manufacturers Association

TRD Technical Rules for Steam Generators

VDI Association of German Engineers

VGB Society of large utility owners

UBC Uniform Building Codes

EHS EHS Guidelines

Indonesian Codes and Standards

MEMR Regulation 3/2007 on Java-Bali Grid Code

MEMR Regulation 46/2006 on Electricity Installation

Government Regulation No. 41, 26 May 1999, Air Pollution Control.

State Minister of Environment Decree No. Kep.13/Men LH/3/1995,

Emissions Standards from Stationary Sources, Exhibit III-B.

State Minister of Environment Decree No. 122/2004

State Minister of Environment Decree No.48/MENLH/11/1996.

Government Regulation No. 27 year 1999 regarding Environmental

Impact Assessment (AMDAL)

Minister of Energy and Mineral Resources No. 1457/K/28/MEM/2000

on Technical Guidelines on Environmental Management in the Field of Mining

and Energy.

Indonesian Ministry of Manpower re inspection and testing of pressure vessels

and lifting equipment.

Indonesian Concrete Code

SNI - Indonesian National Standards

Approval will be required for use of other codes or standards. The Bidder proposing such other

codes or standards shall provide rationale and evidence of equivalence to support their case for

approval. The evidence which is provided must clearly demonstrate that the proposed codes or

standards have previously been demonstrated and accepted as equivalent to the specified codes

and standards.

3.4.2 Electrical Interconnections

All interfaces with the PLNs Grid System shall comply with the requirements of PLN, the Java

Bali Grid Code and Appendix I of the PPA.

3.4.3 Fire Protection

The fire detection and protection systems shall provide coverage of all the Plant and shall

comply with NFPA codes in addition to all statutory and local authority requirements.

3.4.4 Health and Safety at Work

The Plant shall be constructed, installed and commissioned and be operable and maintainable in

full compliance with relevant health and safety at-work orders, all related acts, regulations, codes

and statutory requirements. All warning and instruction notices shall be in Indonesian and

Annex C page 21

English.

3.4.5 Hazardous Substances

The SELLER shall implement all special requirements concerning the nature, handling and

storage of all classified substances including fuels, oils, gases and chemicals. Toxic, radioactive,

inflammable and explosive materials shall be declared and approved before importation to the

Site.

3.4.6 Escape Routes

Equipment location and arrangement shall ensure that not less than two escape routes are

available for personnel in case of fire or other hazard during normal operation and maintenance

procedures.

3.4.7 Environmental Requirements

All statutory environmental regulations shall be adhered to during the design, construction and

operating phases of the Project. Lender requirements in this respect are also to be complied with.

3.4.8 Nameplates and Plant Coding System

All nameplates on equipment shall be written in Indonesian and English. A consistent Plant

coding system shall be used throughout the duration of the Project from design through the end

of the operating period. Those items of Plant electrical equipment specified in the Java-Bali Grid

Code (Connection Code Section) shall include equipment numbering and identification codes in

accordance with the Connection Code.

O&M Manuals shall be written in Indonesian and English whenever possible.

4. PARTICULAR TECHNICAL REQUIREMENTS

4.1 INTRODUCTION This section of these Functional Specifications describes the particular technical requirements of

the principal items of the Plant and the associated systems. The detailed particular technical

requirements, including the construction details of the Plant, will be the subject of specifications

to be prepared by the SELLER.

4.2 MECHANICAL PLANT AND SYSTEMS REQUIREMENTS

4.2.1 Boilers

The boilers shall be pulverized coal type, and use supercritical or ultra-supercritical technology.

The boilers shall be designed to be capable of burning coals which satisfy the coal specifications

in Attachments A and B to Appendix S to the PPA and which have a higher heating value (HHV)

within the range between 4,500 to 5,000 kCal/kg. The boiler(s) and auxiliaries shall be sized to

operate over the full range of ambient temperatures specified without limiting the plant output.

They shall include economizer, evaporator, superheater and reheater tube bank section(s) with

tubing, as appropriate, to maximize heat transfer.

Annex C page 22

Pressure parts shall be designed, manufactured and tested in accordance with "ASME Boiler and

Pressure Vessel Code, Section 1, Power Boilers".

Each boiler shall exhaust through a separate flue and chimney or to a common multi-flue stack

with a concrete protective shell. Carbon carry-over into the fly ash shall under normal operating

conditions be less than six percent (6%).The stack height and the flue gas exit temperature shall

be sufficient to ensure adequate dispersion of the flue gases in accordance with environmental

standards and requirements. Chimneys shall have hazard lighting and painting as required by

local aviation laws and regulations.

4.2.2 Steam Turbine(s)

The steam turbines shall be of proven design directly coupled to a 50 Hz generator. Design

criteria shall be applied to ensure a long creep life, cyclic duty and fast start-up. Last stage blade

materials and exhaust steam moisture shall be selected to minimize blade erosion. The last low

pressure stage blade design shall have been proven in service. The boiler outlet steam

parameters shall be selected to satisfy the necessary design steam parameters at the steam turbine

inlet

The steam turbine generators shall be installed within a common enclosed turbine building with

indoor access to the control room. Overhead cranes shall be installed as required.

The steam turbine exhaust and condenser configuration shall be to the manufacturers standard

design.

4.2.3 Feedwater System

A feedwater system shall be designed to provide sufficient and reliable feedwater supply to the

boilers. It shall include but not be limited to necessary feedwater heaters, deaerators, feedwater

pumps, control valves and auxiliaries.

4.2.4 Steam Condensers

To condense steam exhausted by the steam turbine, the Plant shall utilize a water cooled

condenser in an open seawater system. The surface condenser(s) shall be designed and

constructed to HEI Standards, or equivalent, with sufficient margin and spare surface area for the

maximum heat rejection duty under both normal operation and turbine bypass operation

conditions for the operating regime specified.

The condenser tube and tube sheet materials shall be suitable for the cooling water quality. An

on-line condenser tube cleaning system shall be provided.

The condenser(s) shall be of the divided waterbox type arranged to allow waterside cleaning of

one half of the condenser with the turbine capable of generating a minimum of fifty percent

(50%) of its full load capacity.

4.2.5 Cooling Water System

Cooling water for the steam turbine condenser(s) shall be supplied using a once through (or

circulating) sea water cooling system equipped with necessary intake screens, screen cleaning

Annex C page 23

and debris removing devices, circulating water pumps, piping, valves, controls, and auxiliaries.

A chlorination system is to be provided if required.

An auxiliary (closed circuit) fresh water cooling water system shall be provided for cooling

turbine auxiliaries and other plant auxiliaries as required.

4.2.6 Water Treatment Plant

A desalination plant with one hundred percent (100%) redundancy shall be provided to meet the

Plant demand for raw water for steam cycle makeup, auxiliary cooling, service water, fire water,

potable water (if desired) and all other Plant water requirements. A pre-treatment system and a

demineralizer are anticipated. The SELLER shall provide a Raw Water Storage Tank with a

total capacity equal to at least twenty-four (24) hours of maximum water consumption by the

Plant plus firewater storage required to meet the National Fire Protection Association (NFPA)

and the local fire code requirements. Firewater storage refill requirements shall meet NFPA

requirements. Fire fighting for the coal unloading and storage facilities shall be provided by the

SELLER.

4.2.7 Water Treatment Plant

The SELLER shall provide wastewater treatment for the Plant to ensure that any water

discharged from the Plant meets the Laws of Indonesia.

4.2.8 Ash Disposal

For the ash storage area, the clearing and grading will follow existing ground level. Only a small

portion (5 years) of the total ash storage area will be prepared initially. The SELLER will

operate and maintain the ash disposal system and land fill compliant with all applicable

environmental regulations.

An impervious layer shall be installed to prevent ash storage area runoff from entering the

ground water. Appropriate wells will be installed to monitor the ground water. Fugitive ash dust

from the ash disposal area will be controlled in an environmentally benign manner.

4.3 ELECTRICAL PLANT AND SYSTEMS REQUIREMENTS In order to meet PLN dispatch requirements, the Plant shall be designed to meet, as a minimum,

the technical limits described below and the requirements of the Java-Bali Grid Code and PPA

Appendix I: Interconnection Points and Electrical Interconnection Facilities and PPA Appendix

B: Technical Limits.

4.3.1 Frequency Limits

The Plant shall be capable of operation at frequencies as defined in the Java-Bali Grid Code,

reproduced in Table 4.1: Frequency Limits, below.

Annex C page 24

Table 4.1: Frequency Limits

Frequency Range (Hz) Operation Condition

49.0 to 51.0 Hz Continuous Operations

48.0 to 49.0 Hz Twenty (20) minutes

47.5 to 48.0 Hz Ten (10) minutes

51.0 to 52.0 Hz Ten (10) minutes

At 47.5 Hz Immediate trip

At 52.0 Hz Immediate trip

For further information, see Java-Bali Grid Code

4.3.2 Voltage Limits/Current Limits

Power station and system voltages shall be selected from IEC 60038 and conform to the existing

voltages currently used by PLN, and shall be capable of operating over the range 5 % of the

nominal voltage at 500 kV, as per the Java-Bali Grid Code.

4.3.3 Generators

Each generator shall comply with IEC 60034, the Java-Bali Grid Code, and PLN requirements.

Generator and exciter windings shall possess insulation that is non-hydroscopic and of Class F

type complying with IEC 60085, but having a temperature rise not exceeding that of Class B

under any operating condition within the specified output.

Generators must be able to receive and respond to Automatic Generation Control (AGC) signals

from the Java Load Dispatch Center.

Quality of the generators and accessories shall be in accordance with the requirements of ISO

9001, EN 29001 or BS 5750 Part 1 and other similar equivalent international quality standards.

Anti-condensation heaters shall be provided for the air circuits, generator windings, and

excitation system and control cubicles. Heaters shall be capable of maintaining the air

temperature above the dew point to prevent condensation. These heaters shall automatically

switch on when the generator is taken out of service.

Temperature detectors shall be provided to monitor the maximum operating temperature of the

generator.

The generators shall be capable of supplying their rated power within 49.0 Hz and 51.0 Hz and

5% of nominal rated voltage within the power factor range 0.85 lagging and 0.90 leading.

Annex C page 25

4.3.4 Excitation System

Each Generating Unit must be equipped, in accordance with the Grid Code, with:

a. Fast-reacting governors that have effect on System frequency primary governors

in the range of 48.5 Hz to 51.0 Hz. Each Generating Unit must be able to receive

Automatic Generating Control (AGC) signals from dispatches in Load Dispatch Centers

to enable System frequency secondary regulation.

b. Fast-reacting automatic voltage regulators (AVR) for regulating generator

terminal voltage in the range of operations of the generating units without resulting in

instability; and MVAR Limiter (under/over excitation limiter).

c. Power system stabilizer (PSS).

Manual excitation control facilities shall be provided as a backup to the automatic

control, and shall have an adequate range to allow for control of excitation for testing

purposes. A true null balance shall be provided to allow for smooth excitation transfer

between manual and automatic control.

4.3.5 Power, Startup and Auxiliary Transformers

The SELLER shall provide generator step-up, startup and auxiliary transformers for Plant

service, including all protection, bus bars, and disconnect switches as required, and transformers

for all auxiliaries. It is expected that a startup transformer or a generator circuit breaker will be

provided to allow energizing of unit auxiliary equipment while the unit is out of service. The

Generator Step up Transformer shall be equipped with an on-line tap changer, 5% over and 5%

below limits, and shall be delta wound on low voltage side and solidly grounded wye wound on

the high voltage side. See the Java-Bali Grid Code for further requirements.

4.3.6 Control and Supervision

Supervision/control, monitoring and information systems shall comply with PLNs system

control concepts and procedures and will be subject to the approval of PLN.

Automatic and manual synchronizing facilities, with such check facilities as are required shall be

provided as a minimum for all circuits associated with generators.

The Plant shall be provided with a centralized on-site Central Control Room so that operators

can supervise the generators, perform switching and load dispatch. Also, a Distributed Control

System (DCS) shall be provided to coordinate the control and supervision of the turbine

generator control systems and power plant auxiliary systems. The DCS will have to meet the

requirements of the Java-Bali Grid Code and PLN requirements regarding any interfaces with the

500 kV switchyard and the SCADA/EMS systems of the Java Control Center.

Generators must be equipped with fast reacting governors that have an effect on system

frequency primary governors in the range of 48.5 Hz to 51.0 Hz. The generators must be capable

of receiving and responding to (future) Automatic Generating Control (AGC) signals from

dispatches in the Java Control Center to enable system frequency secondary regulation.

Annex C page 26

The necessary data and information to be exchanged between the Plant and Java Control Center

via the 500kV switchyard and SCADA/EMS systems of the Java Control Center includes but is

not limited to the following list:

No. Type of signals

From the Plant

Java

Control

Center

1 Status of 500kV line circuit breakers X

2 Status of 500kV grounding switches X

3 Status of operated relay protection system of

500kV

X

4 Measured signals of voltage, current, power

and reactive power of all 500 kV lines

X

5 Measured signals of voltage, current, power

and reactive power and tap changer positions

of transformers

X

6 Measured signals of voltage, current, power

and reactive power from the units

X

7 Measured signals of voltage of the bus bars X

8. Measured signal of frequency X

No. Type of signals

To the Plant

Java

Control

Center

1 Raise/lower signals for controlling the unit

outputs by either set point or pulses

X

2 Operation orders (open/close/trip) circuit

breakers, disconnects grounding switches

X

4.3.7 Electrical Protection, Communication and Instrument Systems

The SELLER shall provide a complete and comprehensive protection system for the

generators/generator transformers/service transformers, transmission lines and the station

electrical distribution systems. The SELLER shall undertake the installation of the protection

relay panels within the control room, wiring between panels and switchyard equipment, and

commissioning tests of the protection schemes. Protection will be coordinated with PLN.

Transfer of electrical interface and control data between the Plant and the 500 kV switchyard

shall be via RTUs or Fiber Optic. Ports shall be used to communicate with the 500 kV

switchyard control room. The RTUs and Fiber Optic equipment shall comply with PLN

configuration, features and functions. Communication, control, monitoring and voice channels

will be provided between the power station and Java Control Center by the SELLER in

Annex C page 27

consultation with PLN. Communication and SCADA signals shall terminate at the RTU and be

in digital form. Telemetering and relay protection signals shall terminate in a Fiber Optic Panel.

The following signals will be supplied to the 500kV switchyard control center in line with the

SCADA Standard (note: provided in the Data Room).

Status data:

1. Protection system data for step up transformer bays

a. Generator synchronizing circuit breaker status signals

b. Over current relay signals

c. Breaker failure relay signals

2. Protection system data for overhead lines, if any:

a. 500 kV circuit breaker, if any, status signals

b. Breaker failure relay signals

c. Line protection relay signals

3. Bus bar protection

a. Differential relay signals

b. Circuit breakers status of the 500 kV switchyard

Analog Data:

1. Net power flow in MW, at the Delivery Point

2. Reactive power flow in MVAR, at the Delivery Point

3. Voltage in kV at the Delivery Point

4. Frequency in hertz at the Delivery Point

SCADA, communication, telemetry, fiber optic terminal, and teleprotection equipment will be

supplied and installed by the SELLER and shall be compatible with PLN equipment and

systems. The wiring of all signaling and control circuits required for the system shall be cabled

out to interface marshalling cubicles by the SELLER. The SELLER shall supply and install

necessary cabling and cubicles.

The SELLER shall provide telecontrol facilities and information to the Java Control Center as

required by the Java-Bali Grid Code, the PLN SCADA Standard and the agreement with PLN.

Annex C page 28

4.3.8 Power Tariff Metering

Power tariff metering shall be provided at the 500 kV side of the generator transformers and

startup transformer for export and import metering. The Primary Metering System and Backup

Metering System shall be provided and tested by the SELLER in accordance with the PPA

Appendix K.

The Primary and Backup Metering Systems shall use separate CTs and PTs. The tariff meters

shall have separate facilities for recording the net inflow to the Plant and net outflow of energy

from the Plant, and the aggregate of these parameters. This information shall be available for

transmission to remote locations via the communication circuit between the 500-kV switchyard

and the Java Control Center.

The following class of Metering Transformers shall be provided as a minimum for each circuit,

which has to follow the requirements of the Java-Bali Grid Code:

Class 0.2 current transformers (three phases)

Class 0.2 voltage transformers

A three phase energy meter of Class 0.2, multi-tariff, two directions, capable to integrate to remote measuring data acquisition system, having

provisions for local monitoring and remote monitoring, and complete with

impulse output Plant and maximum demand Plant to record watt-hours

and watts,

A three phase integrating energy meter of Class 0.2, complete with impulse output facilities connected to read var-hours

The tariff metering scheme shall have an overall accuracy of 0.3% for watt-hour and watt

metering and 1.0% for var-hour metering.

Separate summators shall be provided, if required, for the total Plant export and import MWh

and MVarh.

4.3.9 500 kV switchyard

The outdoor 500 kV switchyard will include two outgoing 500kV circuits and two incoming

500kVcircuits and will be configured with two bus bars and three circuit breakers for each feeder

bay in a breaker and one half configuration. Details of the required arrangement and

requirements by PLN to be used by the SELLER in its design and configuration of this

switchyard are shown on the 500kV switchyard electrical one-line diagram shown in the attached

Figure 4.3: Configuration of GITET Mandirancan with the Introduction of PLTU Central Java.

The configuration shall ensure a continuous power supply when any circuit breaker needs to be

removed from service for maintenance or repair. The provisions shown in Figure 4.3 for a future

third transmission line and its future interconnection in the 500 kV switchyard (Electrical

Interconnection Facilities) and its interconnection in the new Special Facilities substation are not

included in the Scope of Supply of the SELLER.

Annex C page 29

4.3.10 Construction Power

Construction power will be available local to the site from PLNs 20 kV system in accordance

with the provisions of the PPA. The SELLER will provide and install its own transformers.

4.3.11 Special Facilities

The Special Facilities shall include one row of transmission towers strung with double circuit

500kV transmission lines; foundations; protection and operational relays and components,

insulators and fittings, static line and communications lines and all other components necessary

to connect from the Plants Interconnection Facilities to the existing 500 kV transmission system

in accordance with Appendix I. The Special Facilities shall include a substation, located by the

SELLER on the Special Facilities Site near the existing 500 kV transmission system. SELLER

shall perform the tie in between the substation and the existing 500kV lines, including provision

of turning towers and reinforcement of existing towers, if necessary.

Sellers Scope of Supply for the substation shall include provision of connections from

interconnecting towers and four breaker and a half bays which are located within the substation

so as to permit the future expansion of the substation as shown schematically in the document

entitled BASIC DESIGN 500KV TRANSMISSION LINE AND 500KV SUBSTATION FOR

SPECIAL FACILITIES AND INTERCONNECTION FACILITIES OF CENTRAL JAVA

STEAM POWER PLANT 2X1000 MW". That document is included in the Data Room and

includes a single line diagram and specifications for the substation, transmission lines, towers

and protective relays to be followed by the SELLER in design and construction of the Special

Facilities. The second row of transmission towers shown in the original attachment of that

document is not required and is not in the Scope of Supply of SELLER. A new single line

diagram replacing the original attachment is included in the Data Room. The title of the new

diagram is KONFIGURASI SISTEM PLTU JATENG 2X1000 MW DAN TRANSMISI &

SWITCHING STATION TERKAIT, revision version of REVISI 1: DIV EDT PLN PUSAT,

TGL 03 JANUARI 2011.

4.4 CIVIL REQUIREMENTS

4.4.1 General

The Civil Works shall be designed to have a minimum working life of forty (40) years before

any significant repair or replacement of the main structural elements and secondary structural

elements/cladding is required. Applied coatings shall have a design life to first maintenance of

ten (10) years minimum. All construction will comply with all codes, standards, and licensing

requirements for such facilities

4.4.2 Site and Special Facilities Site Conditions

The SELLER shall carry out its own detailed topographical, hydro-geological and soil

investigations, and fund other investigations as it deems necessary.

The SELLER shall be responsible for arranging for the supply of all Site services such as power,

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potable water, temporary sewage treatment facilities, laydown areas, camp facilities, telephone

or other communications equipment that may be required during the construction of the Plant.

Should the SELLER wish to provide accommodation facilities for the Plant operating staff, it

shall submit details of these facilities together with the space requirements, with its Proposal.

The SELLER will note in the proposal any additional land required for Plant staff housing. The

accommodation facilities shall comprise permanent buildings constructed to appropriate

standards and shall be compatible in quality to other buildings in the Plant.

4.4.3 Site Levels

The Site shall be raised out of the flood plain by the SELLER if required.

The catchment drainage system shall be designed to ensure the drainage of surface water from

the area of Plant with a flood frequency of 1% (100 year storm).

4.4.4 Foundation Philosophy

The entire foundation system shall be designed such that it will ensure the proper and due

performance of the Plant and afford adequate protection against the effects of any long term

settlement, against seismic activity, and against periodic flooding of the area.

4.4.5 Engineering Design

The design of all facilities shall be to an approved internationally recognized set of standards and

codes, including those identified in Article 3.4 of this Appendix and shall also satisfy all

applicable Indonesian standards. The designs shall be to an acceptable standard of professional

competence and shall represent a safe, efficient use of materials to produce the required facilities.

4.4.6 Design Loadings

The design for each Plant shall incorporate the worst load combination taking into account the

following criteria where applicable:

a) Dead Loads - all loads arising from the mass of materials making up the

permanent works.

b) Live Loads - all superimposed loads arising from station operations,

testing, traffic, cranes, storage of liquids and the like. These shall be

derived from approved standards and shall represent a minimum load to be

taken.

c) Wind loads shall be calculated in accordance with the Indonesian Building

Codes or other approved internationally recognized standard. All

buildings, structures and equipment exposed to wind are to be designed for

a basic wind velocity of 100 km/h (62.1 mph) per ANSI A58.1, Exposure

Type D or approved equivalent.

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d) Road Loading - the design of the roads shall be satisfactory for the

maximum load anticipated during both the construction and operational

period of the Project.

e) Seismic Loading - the design seismic lateral forces shall be calculated

either by the Equivalent Static Force method, or by the Dynamic Response

Method, based on the requirements of the Indonesian Building Codes

supplemented as required by Uniform Building Code (UBC) 1997 as a

minimum, or other approved internationally recognized standard.

4.4.7 Materials

Materials shall be durable and fit for purpose. Materials for external surfaces shall be selected

for aesthetic qualities and proven durability to withstand all climatic conditions likely to be

experienced, ease of maintenance and economy of cost. Reasonable endeavors shall be made to

create as pleasant a working environment as is practical for the staff working in the buildings of

the Plant.

4.4.8 Workmanship

All workmanship shall be in accordance with accepted international practice to ensure the Plant

is fit for the purpose and will be serviceable for the design life of the Plant.

4.5 ENVIRONMENTAL REQUIREMENTS The Project shall comply with the environmental requirements of the Laws of Indonesia,

including Law No. 32 of 2009, Concerning Environmental Management and any requirements of

the Finance Parties.

The Winning Bidder must prepare and submit an Environmental Impact Assessment (AMDAL),

in accordance with the Environmental Assessment Regulation, Government Regulation No. 51,

1993, and Government Regulation No. 27, 1999, or any successive applicable legislation or

regulation, which demonstrates that the Plant will produce impacts that are minimal and within

an acceptable range, as well as meeting all of the Laws of Indonesia. The EIA shall include, but

not be limited to:

(i) identification of the existing social and physical conditions that may be

affected by the construction of the Plant;

(ii) identification of the existing land, air, water and solid waste environmental

conditions and parameters;

(iii) definition of permissible environmental conditions and parameters

applicable to the Plant, including legislation and regulation;

(iv) identification of the areas (if any) where the initial proposed design for the

Plant would not meet the required criteria;

(v) analysis of the suitability of any design modifications (if needed) proposed

by the Winning Bidder;

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(vi) identification of permits and licenses required to comply with the

environmental requirements prior, during and after construction and

commissioning of the Plant, and

(vii) specification and design of the monitoring programs that shall ensure that

the Plant shall comply, in the future, with the permissible environmental

standards.

Prior to commercial operations, the SELLER shall carry out the necessary tests to insure

that the Plant shall comply with the applicable environmental standards (both Indonesian

and lender requirements to be met). It is noted here that once the Special Facilities have

been handed over to PLN, only the applicable Indonesian standards will apply under the

PPA.

4.5.1 Exhaust Gas Emissions and Air Quality

Exhaust gas emissions shall not exceed the emission rates allowed by Indonesian Standards, or,

if more stringent, the requirements of the Finance Parties. These requirements apply under all

normal operating conditions.

The required air quality should be maintained by controlling emission limits and selecting

appropriate stack height, stack gas exit velocity, and exhaust gas temperature.

The SELLER shall be required to provide continuous emission monitoring for each stack, as

required by the regulatory authorities.

4.5.2 Effluent Discharges

Effluent discharges shall not exceed the discharge limits for industrial/power plant effluents

specified by the Laws of Indonesia and any requirements of the Finance Parties.

4.5.3 Noise Emissions

The operational noise emissions from the Plant at the Site boundary should not exceed the

ambient noise criteria or limits for industrial areas specified by the Laws of Indonesia and any

requirements of the Finance Parties.

These limits should be maintained as an absolute requirement under all ambient conditions

during normal power plant operation.

In order to ensure a safe and satisfactory working environment a sound pressure level of 85 dB

(A) should not be exceeded at 1.0 m from the equipment. In addition, compliance should be

made with all statutory and other mandatory noise limitation criteria applicable to the Project.

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5. QUALITY ASSURANCE, INSPECTION, COMMISSIONING AND TESTING

5.1 GENERAL The SELLER shall implement a quality assurance program for the Project and ensure that all

work undertaken on the Project throughout the design, construction, commissioning, operation

and maintenance of the Plant comply with the terms of a National or International Assurance

Standard equal to ISO9001, and provide evidence of meeting this requirement.

The whole of the works shall be tested in accordance with the standards adopted for the Project

and SELLERs quality plans and testing procedures as further described in Appendix J

5.2 SCOPE OF TESTS

SELLER shall be required to perform the tests required in Appendix J of the PPA in addition to

those which the SELLER would normally perform to ensure equipment quality and Plant

reliability. Testing requirements include:

Tests during manufacture

Tests during construction and erection

Tests upon completion of construction (including, as a minimum, Functional tests, PPA Tests, Performance and Plant Reliability Tests)

Tests required under any other project agreement

Requirements for tests, inspections, PLN witness, reports and PLN approval are more fully

detailed in Appendix J.

6. SITE DESCRIPTION

6.1 SITE LOCATION AND REQUIREMENTS Characteristics of fifteen potential sites that have been identified and evaluated by PLN are

presented in the Site Reconnaissance Study (available in the Data Room). However, the

SELLER may select a different site, if it so chooses, which meets site suitability requirements for

this Project.

The selected site is to be within 15 km of the PLN 500kV Grid. The Site is to be located on the

north coast of Pemalang area, Central Java Province, between Tegal (to the west) and Kendal (to

the east) and new 500 kV transmission lines from the Plant (part of the Special Facilities) which

will interconnect with the existing PLN 500kV grid via a new substation (included by SELLER

with the Special Facilities) as shown in Figure 6-1. Site area requirement for the Project is

expected to be about 250 hectares. The selected site shall be sufficiently large to accommodate

the expansion of the Plant to include a third generating unit.

Within the Site area, the SELLER must develop the proposed Plant layout taking into

consideration the area (m2) allotted for the Plant including, water storage facilities, coal, ash and

limestone handling and storage, and the general layout of buildings, mosque, facilities and

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equipment. The Electrical Interconnection Facilities will be contiguous with the Site. The final

Plant arrangement will be coordinated with PLN and subject to PLN approval. The layout and

orientation of the Electrical Interconnection Facilities shall be able to accommodate associated

outgoing 500 kV transmission line.

The Special Facilities Site shall be determined by the SELLER and shall comply with PLN

design, construction and electrical safety requirements. Interconnection points between the

Electrical Interconnection Facilities and the Special Facilities and also between the Special

Facilities and the existing 500 kV transmission system shall be clearly noted on drawings

prepared by the SELLER and shall be subject to PLN approval. Schedule for testing and

commissioning of the Special Facilities shall be approved by PLN prior to the start of

construction