rnc equipment survey process and environmental acceptance

7/27/2019 RNC Equipment Survey Process and Environmental Acceptance

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UMTS_RNS_I_01_20090530RNC Equipment Survey Process and

Environmental Acceptance

ZTE University


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Overview

Project Survey Process

Project Environment Survey Guide

RNC Project Survey Guide

Quality Control of Project Survey

Content


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Overview

Project survey is the initial stage of the whole project. Well begun is half done.

It has direct influence on every link of the project

afterwards.

Introduction Purpose: To provide normalized instructions on the

process, item and method of the project survey; to

offer a uniform survey standard to ensure good

preparation; and to make sure the project survey

plays its due role

Contents: Process, steps, methods, and filling in

forms


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Overview

Project survey:

Ensures accurate production scheduling and timely deliveryaccording to contract.

Is the original basis for data configuration and debugging ofproduction lines.

Is the basis of project design.

Is the original material for the completion report.

Is part of normalized project management.

Conducting no project survey, or wrong project survey, will result in:

Delay in scheduling and production, and error in dataconfiguration.

Delay in delivery, with excesses, shortages and omissions.

Project suspension and material supply delay, so that theinstallation personnel can do nothing but wait, and there is noinstallation solution confirmed by both parties, possibly causingchanges of customer requirements, reworking, and refusal ofacceptance.

Lack of original materials in the completion report.

Lack of links in normalized project management.


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Overview





Content


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Project Survey Flowchart

Project Survey

Plan

Start

Preparing forproject survey

Making project surveyplan

Conducting field project survey and

first environmental acceptance

Producing surveydocuments

Reviewingthe survey

Qualified?

Handling

documents

End

Project Survey

Guide

Contract ProblemFeedback

Project SurveyReport

Environmental

Acceptance Report

Review Form ofProject Survey

Report

Guide for Project

Survey Report ReviewNo

Yes


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Description of Project Survey Process

Preparing for Project Survey Purpose: To ensure smooth project survey

Person in Charge: Project survey engineer

Responsibilities:

1. Accepting tasks, receiving materials, and

understanding requirements 2. Taking charge of consultation, understanding, and

communication

3. Keeping in touch with the customer to know on-sitesituations and identify conditions

Actions to take under poor survey conditions Actions to take under good survey conditions

4. Drafting a Project Survey Plan

5Making survey tools and meters ready

6. Carrying survey documents


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Making Project Survey Plan Purpose: To conduct planned project survey


Output document: Project Survey Plan

Responsibilities: Holding a project survey briefing

Making a Project Survey Plan

Being ready for carrying out the project survey


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Conducting Field Project Survey and FirstEnvironmental Acceptance

Purpose: To ensure that the field survey meet

specifications


Input Document: Project Survey Guide

Responsibilities:

Conducting field survey, with the customer involved, to

record on-site information and data

Conducting first check of equipment operatingenvironment

Defining installation environment requirements

Knowing preparations of both parties for the project


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Producing Survey Documents

Purpose: To ensure production debugging and accurate delivery, and to guideproject construction and commissioning, serving as the basis of producingproject design documents


Output document: Project Survey Report (Scheduling & Delivery Data), ProjectSurvey Report (Project Design Information), Project Survey Report(Commissioning Data), Environmental Acceptance Report, and ContractProblem Feedback

Responsibilities: Collating and filling in survey data according to the requirements specified in

Project Survey Guide; signing in the Project Survey Report and in the FirstEnvironmental Acceptance column of the Project Survey Report after both thecustomer and ZTE reach an agreement on the results of the survey andenvironment acceptance

Communicating and negotiating with the customer, asking them for advice toreach an agreement, and listing important things into the project surveymemorandum

Providing the customer with a copy of the documents

Filling in the Contract Problem Feedback to help the business manager and thecustomer solve problems upon discussion if the result of the survey does notconform to the contract

Submitting the Project Survey Report


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Reviewing the Survey

Purpose: To ensure the integrity, compliance, andcorrectness of the project survey data

Person in Charge: Project survey assessment engineer

Input Document: Guide for Project Survey Report Review

Output document: Review Form of Project Survey Report

Responsibilities:

Assessing the integrity, compliance, and correctness of theProject Survey Report

Filling in the Review Form of Project Survey Report

Revising the survey documents in any unqualified Project

Survey Report, and repeating field survey if necessary until itmeets the requirements

Submitting the qualified Project Survey Report to projectsurvey engineer for filing

Submitting the Review Form of Project Survey Report toproject survey engineer for filing


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Handling Documents

Purpose: To file the survey results and provide them to thedepartments that need them

Person in Charge: Project survey engineer/document controller

Responsibilities:

SendingProject Survey Tasks,Project Survey Plan,Project SurveyReport (Scheduling & Delivery Data), Project Survey Report

(Project Design Information), Project Survey Report(Commissioning Data), Environmental Acceptance Report, SurveyProblem Feedback,and Review Form of Project Survey Report todocument controller for filing

Submitting Project Survey Report (Scheduling & Delivery Data) tothe involved Planning Department of the Product Division

Submitting Project Survey Report (Project Design Information) to

project design manager Submitting Project Survey Report (Commissioning Data) to

commissioning engineer

Submitting Environmental Acceptance Report to projectsupervisor for a second environmental acceptance


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Overview





Table of Contents


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Requirements for Equipment Room Environment

Basic Environment of Equipment Room

High temperature, heavy dust, harmful gases, explosives, low air pressure,strong vibration or noise, and high-voltage electrical equipment

The equipment room must be built at the location that meet the engineeringdesign requirements of the communication equipment. A long-term view shouldbe taken before construction. Do not relocate the equipment room unlessnecessary. Durability should be considered to avoid frequent renovations. Theequipment room must be fireproof and shockproof.

Construction, structure, heating, ventilation, power supply, lighting and fire

protection are required. MPT specifications must be followed.

The equipment room should be designed for the convenience of the cablingand daily maintenance of the signal cable and power cable, to reduce cablingcost and communcation failure and improve working efficiency.

General Information of Equipment Room Location of equipment room

Type of equipment room

Route for equipment to enter the equipment room

Equipment unloading area


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Project Environment Survey

Equipment Room Floor and Fire Protection

The bearing capacity of the equipment room floor should be higher than450kg/m2.

The bearing capacity of the floor outside the equipment room should be nolower than 300kg/m2.

The equipment room must be equipped with appropriate fire fighting devices,such as several dry powder fire extinguishers.

Antistatic raised floorboards or antistatic terrazzo should be laid in theequipment room. Conductive floorboards should be used instead if raised

floorboards are unavailable. Static grounding must be performed for conductiveor raised floorboards, which should be connected to a grounding devicethrough a current-limiting resistor and a connecting wire.The resistance of thecurrent-limiting resistor should be 1M.

Survey Description:

If antistatic floorboards are used in the equipment room, the floor height shouldbe checked.

Doors/Windows/Walls of Equipment Room The door should be over 2.2 m high and over 1.2 m wide, and should be a

sealed single leaf door.

The walls and the ceiling should be free from pulverization, dust and peeling.Decorative materials applied on the walls should be fire-retardant.

Survey Description:

There should be some space on the walls because wall-mounting DDFs orODFs are requied sometimes.

Attention!


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Project Environment Survey

Equipment Room Air Conditioning

An air conditioning system should be installed in the equipment room. The heat radiation in the equipment room and the refrigerating output of the air conditioning

can be calculated as follows: 1. Heat radiation of the equipment: Q1=0.82VA (kcal/h)

Where:

Q1 is the head radiation of the equipment.

V is the DC power supply voltage (V).

A is the average power consumption current (A).

The value 0.82 is the product of 0.86 (the scaling factor for converting every watt of electrical energy intoheat energy) and 0.95 (the scaling factor for converting electrical energy to heat energy in the equipmentroom).

2. The refrigerating output of the equipment room: Q2=S150 (kcal/h) Q2: The refrigerating output of the switching room

S: The area of the switching room (M2)

150: The parameter for converting room area to refrigerating output (Kcal/hM2

3. The refrigerating output of the air conditioning (actual capacity): Q=Q1+Q2

Survey Description:

Different models of equipment has different requirements on ambient temperature andhumidity. For detailed information, refer to the corresponding equipment technical manuals.Generally, it is required to install an air conditioning system in the equipment room. If an air

conditioning system exists, the power of the air conditioning and the heat radiation of theexisting equipment should be noted during survey. If the existing air conditioning systemcannot meet the requirements of the new equipment, additional air conditioners arerequired. The air conditioners should run automatically once powered.


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Equipment Installation Information

Area of Equipment Room Enough space should be reserved for the main

equipment, auxiliary equipment, and capacity

exapnsion.

Antistatic Floor and Cabinet Base

The height of the antistatic floor should be measured

accurately.

Height-adjustable base

Fixed-height base


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RNC Auxiliary Facilities

DC Power Cabinet

The power consumption of each ZXWR RNC rack in fullconfiguration is less than 3100 W.

If the DC power supply equipment is provided by ZTE, ZTEshould check it during survey. The template of the powersupply survey report is provided by the Mobile Business

Department. The survey should focus on the placement ofthe power supply equipment and the batteries, and thespecification and length of the AC power cable from the ACpower supply system to the DC power supply system.

ZXDU300 DC power supply cabinet is used in generalequipment rooms. AC 3-phase 380V input and single-

phase 200V input are optional. The AC power cable is 16mm2 four-core copper cable. The cabinet model should bespecified by support engineer from the power supplyproduct line of the Mobile Business Department.

ZXWR RNC requires a DC voltage range of -57V~ -40V.


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Digital Distribution Frame (DDF) and Optical Distribution Frame

(ODF) If the DDF is provided by ZTE according to the project

interface, ZTE should survey the DDF.

Placement

DDF specifications - ZTE specially provides a reference listfor model selection. Generally, rack-type or cabinet-type isselected.

The length of the grounding cable of the DDF

75 ohms or 120 ohms.

If the ODF is provided by ZTE according to the projectinterface, ZTE should survey the ODF.

Placement ODF specifications - ZTE specially provides a reference list

for model selection. Generally, rack-type or cabinet-type isselected.

The length of the grounding cable of the ODF

Type of the Optical connector (optical ring flange)


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Transmission Equipment ZXWR RNC supports multiple transmission modes:

Direct optical fiber connection

Direct 2M cable connection

SDH transmission-based connection ZXWR RNC provides two transmission interfaces:

STM-1 and E1.

ZXWR RNC supports 75-ohm and 120-ohm

interfaces.


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Survey of RNC Cables and Materials

Make sure the installation positions and cabling routes of

the related equipment.

General principles for cabling routes:

It should facilitate the wiring of signal cables and

power cables and routine maintenance.

It should make the lines as short as possible to avoid

detours. It should help reduce wiring costs and

communication failures.

All cables must be kept intact, and any joint or transition

point is unacceptable.

A 10% surplus length should be reserved for all cables.

Attention!


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Grounding Cables

Position of the grounding bar: Generally, the grounding bar is installed on thelower part of the wall in the equipment room.

The protective grounding cable of the ZXWR RNC indoor grounding bar: 35mm2 multi-strand soft copper wire; the cable length should be the focus duringthe survey.

The protective grounding cable from cabling rack to grounding bar: 35 mm2multi-strand soft copper wire; the cable length should be the focus during thesurvey.

The protective grounding cable from DDF/ODF to grounding bar: 35 mm2 multi-strand soft copper wire; the cable length should be the focus during the survey.

The protective grounding cable from power supply equipment to grounding bar:35 mm2 multi-strand soft copper wire; the cable length should be the focusduring the survey.

The protective grounding cable from transmission equipment to grounding bar:35 mm2 multi-strand soft copper wire; the cable length should be the focusduring the survey.

The grounding downlead from the grounding bar to the grounding body in theequipment room: 95 mm2 multi-strand soft copper wire; or 40 mm 4 mmzinc-plated flat steel; the cable length should be the focus during the survey.


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DC Power Cables 48VDC racks

There are two types of DC power cables:48V working grounding cable (GND) and 48V power cable (48V).

Focus during survey: diameter, specification, and length of power cables.

The cable diameter can be calculated as follows: S=I2L/U S: Cross section of power cables (mm2)

I: Total current

L: Effective length of the feeder (M)

U: Permissible voltage of the feeder (v)

: Conductivity of the feeder

For copper core cables, =54.4,

For aluminum core cables, =34 Value range ofU:

From battery to DC power supply: U0.2V

DC power supply: U0.2V

From DC power supply to DC power distribution cabinet:U0.8V

From DC power distribution cabinet to switch rack:U0.4V

Power cable specifications: 1, 1.5, 2.5, 4, 6, 10, 16, 25, 35, 50, 70, 95, 120, and 185 (unit: mm2)

Generally, 25 mm2 cables are used as DC power cables for the racks; 35 mm2 cables are used asprotective grounding cables for the equipment. Fire-retardant cables should be used.

A back-up power supply should be provided if there are two ways of separate DC power inputs. -48V power cable: 25 mm2 multi-strand soft copper core power cable; fire-retardant; blue

-48V working grounding cable: 25 mm2 multi-strand soft copper core power cable; fire-retardant; black

The length of the power cables should be the focus during the survey.

If the length exceeds 100 m, 35 mm2 fire-retardant, multi-strand soft copper core power cables should beused instead.


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AC Power Cables

Server rack and primary power supply equipment

Survey items: The length of the AC power cable from the

primary power supply equipment to the AC power

distribution box.

Power supply for the server rack. The server rack should bepowered through 16 mm2 four-core fire-retardant cable.

The cable length should be the focus during the survey.

Placement of the AC power cables. A distance of 150 mm

should be kept between any two AC power cables.

Shielding tube. The length of the shielding tube should alsobe checked during the survey.

The survey report provided by the supplier of the primary

power supply equipment.


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Transmission Cables

Transmission cables: Tail fibers, digital trunk cables (E1), and network cables. Different transmission modes require different transmission cables.

Transmission cables should be selected according to the applications. Refer tothe Technical Proposal.

Survey Description

Optical fibers: Single-mode tail fibers The number and length of tail fibers, and connector types

Tail fiber connector type: LC/PCLC/PC.

Digital trunk cables: Supporting 75-ohm and 120-ohm interfaces coaxial cables (75 ohms), number and length of 2M cables, and connector types

Trunk cables (120 ohms), number of 2M cables, length of trunk cables, and thenumber of 2M cables included in a 120-ohm trunk cable

Network cables: Full-IP Architecture. Newwork cables are used for internalcommunication.

Length, type of network cables, and number of connectors

Network cables are delivered as a whole in a box. The total length andconnectors of the network cables should be checked during the survey.

Surplus length; network cable testing.


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Filling in Survey Forms

Purposes

To identify the environmental conditions, equipment installation,

cabling, and project tasks & responsibilities; to know all related

details; to make preparations for scheduling, delivery and field

installation.

Tasks

Completing the survey on environmental conditions, floor plan

of the equipment room, cabling, original debugging data, and

hardware installation interface.

Requirements

The environment conditions should be fully described. Theinstallation position of each equipment should be identified.

The number, length, and cabling route of every kind of cable

should be checked. The installation interfaces for both parties

should be identified.


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Filling in Survey Forms-First Environmental ConditionSurvey

1. Conduct the first environmental acceptance according to the items specified in

the Environmental Acceptance Report

2For compulsory items, specified conditions must be provided by the customer.

For the conditions that are currently not provided, a deadline should be negotiated

by both parties.

3. For general items, it is unnecessary to "force" the customer to meet the

environmental conditions, but it is necessary to explain the

advantages/disadvantages to the customer. A deadline should be negotiated by

both parties if the customer is capable of meeting such requirements.


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Filling in Survey Forms-Scheduling and DeliveryData

Collect scheduling and delivery data; fill in the Project Survey Report(Scheduling & Delivery Data)

The report should include such information as site name, configuration, floor

height, number of racks, and length of digital trunk cable, fire-retardant powercable, grounding cable, optical fiber, and cabling rack.

Where:

There are two types of optical fiber interfaces: LC/PC - LC/PC and LC/PC - FC/PC.Fill the selected type(s) in the report according to the survey results.

A 10% surplus length should be reserved for all cables.

All power cables must be fire-retardant, with 25 mm2 (for power cables) and 35mm2 (for protective grounding cables) in cross section. If the length of a powercable exceeds 100 m, a 35 mm2 power cable should be used instead. The lengthof the grounding cable should be the total length of all grounding cables.

The Project Survey Report (Scheduling & Delivery Data) must be sent back to

the Planning Department of the Mobile Division.

Attention!


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Filling in Survey Forms-Project Design Information

Collect information about equipment installation &

commissioning; fill in the Project Survey Report (Project Design

Information)


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Filling in Survey Forms-Project DesignInformation

Description of Equipment Layout Drawing1. The layout describes the planimetric position of the equipment in all equipment rooms.

2. The dimensions and positions of all equipment, the distances between them, and the reservedpositions should be measured, marked and recorded carefully and accurately.

3. Unnecessary changes must not be made once the equipment positions are

confirmed by both parties!4. The customer must send a prior written notice to ZTE for any necessary

changes.

Drawing Requirements: The size of the equipment should be marked in the layout.

The positions of ODF, DDF, transmission equipment, switching equipment and access equipmentshould be provided in the layout.

Old and new equipment should be drawn differently (described by text, or marked by bold or fineline).

The rack front, storey height, ceiling, and floor height should be marked.

The position and size of holes, doors and windows should be marked.

If the description is not clear by using a planar top view, a detail view can be usedinstead.

Both sketch and formal VISIO diagram should be produced.

Copying this diagram is permitted.


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Description of Cable Route Drawing

It describes all cabling routes in the equipment room.

It shows all cabling routes and modes, as well as detailed cabling facilities.

Unnecessary changes must not be made once the cabling routes are confirmed by both

parties!

If cabling facilities are not in position, their installation locations should be identified, and then

marked and noted in a sketch.

Drawing Requirements:

The cabling route from the digital trunk cable to the DDF should be marked.

Different types of cables should be marked differently.

Both sketch and formal VISIO diagram should be produced.

Copying this diagram is permitted.


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Description of Power Distribution Connection

Drawing

1. This diagram mainly describes the power cable connections from the power supply

in the equpment room to the equipment used at the current stage.

2Drawing Requirements:

1. The existing power loops of the power cabinet should be drawn.

2. The planned power loops of the equipment used at the current stage should be drawn.

3. Both sketch and formal VISIO diagram should be produced.

4Copying this diagram is permitted.


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Filling in Survey Forms-Project Memorandum

Every report includes a memorandum.

Communication engineering is rather complicated, with many issues being involved.

Extra, special, or unexpected problems or situations will possibly happen.

All these issues should be recorded into the Project Survey Memorandum.

Any special installation materials that are not recorded in the Project Survey Report

(Scheduling & Delivery Data) should be included into the memorandum.

The memorandum is very important. Forgetting to fill in it will

probably result in serious consequences.


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Table of Contents

Overview






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Quality is the center of any work.

The quality of the survey must be ensured.

The quality of the project survey should be ensured in two

ways:

Process quality

Document quality


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Process Quality Control

Every step must be carried out according to the project survey process.

Project-related information should be collected carefully. Project

requirements, including general and key tasks, should be understood

thoroughly.

The project survey process must be strictly followed. The survey should be

scheduled and planned reasonably to ensure high efficiency.

The survey should be conducted together with the customer to obtain

accurate original information about the site and understand special

requirements and situations. Countermeasures should be planned to avoid

emergencies during the survey.

Every possible resource should be fully used during the survey based on a

good cooperation with the local ZTE office.

Site-related data should be measured and reorded accurately. All sites

should be designed accurately to avoid delay or waiting due to


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Document Quality Control

Document reflects the quality of your work.

Integrity: Ensure the integrity of the documents.

Accuracy: Ensure the accuracy of the documents.

Timeliness: Ensure the timeliness of the documents.


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