draft (qms document no. qo-d-7.1-2 ver.-3), after approval of...

Reasoned Document for Revision of Specification of 8 Wheeler Tower Wagon (DETC)

Sub: Revision of Specification No. TI/SPC/OHE/8WDEIC/0090(02/09) to manufacture the self propelled 8 Wheeler Inspection & Maintenance Car of Diesel Electric under slung type for operation on Broad Gauge (1676 mm).

Ref: Railway Board‟s letter no.84/RE/158/1/2 (FTS 2862) dated: 4.04.2011& 13.09.2011

1. RDSO have issued a Specification[ No. TI/SPC/OHE/8WDEIC/0090(02/09)] to manufacture self propelled 8 Wheeler

Inspection & Maintenance Car of Diesel Electric „under slung‟ type for operation on Broad Gauge (1676 mm) during

May,2010.

2. Railway Board, vide their letter dated 04.04.2011, desired a need to evaluate the Specification as per latest requirement.

A meeting of RDSO & Zonal Railways was called at Railway Board on 04.04.2011.

3. For considering various aspects and for evaluation of above Specification a “DRAFT” was uploaded on RDSO‟s Official

Website on 20.05.2011 for suggestion/comment of probable Vendors and Outside Agencies as per Detailed Guide lines to „Change of Equipment, Item Specification as per RDSO’s QMS Document No. QO-D-7.1-2 Ver.-3. (letter in this regard

had been sent to Railway Board on 13.05.2011).

4. After considering the comments of Motive Power Directorate, Carriage Directorate, PS & EMU Directorate, Zonal Railways and Outside Agencies, a Reasoned Document along with „DRAFT‟ of Revision of Specification was uploaded on website for

15 days on 13.07.2011. As per extent guidelines (QMS Document No. QO-D-7.1-2 Ver.-3), after approval of HOD and

DG/RDSO; Draft Specification was sent to Railway Board for their approval; vide this office letter No.TI/OHE/8WDETW/GEN/11 dated:08.08.2011

5. Railway Board, vide letter No.84/RE/158/1/2-FTS-2862 dated 13.09.2011 have advised RDSO to freeze certain

Designs/Specifications/sources which are similar to EMU/MEMU so that maintenance in Railway‟s existing EMU/MEMU Car

Sheds may be done. 6. Again „DRAFT‟ for revision was prepared, after approval it was sent to Motive Power Directorate, carriage Directorate, and

PS & EMU Directorate, for evaluation and comments. Same have been uploaded on RDSO‟s Web Site on 24.10.2011 for

obtaining comments of outside agencies.

7. Comments/ suggestions received so far have been compiled below along with RDSO‟s views:

Sl.

No.

Clause

No.

Description

in Specification

Comments of PS & EMU, Motive

Power and Carriage Directorates.

Comments of BHEL, BEML, CGL &

Phooltas, Titagarh Wagons & Tractor India Private Limited

Views of

Traction Installation Directorate

1

2.

1.2

1.2.1.3

Climatic Condition,

Atmospheric temperature,

Minimum

temperature:

- 10°C (Also snow fall in certain areas

during winter

season). Reference Site

Conditions

i) Ambient

Temperature : 50°C ii) Humadity:100%

iii)Altitude:1000 m

above mean sea level

Carriage Directorate

-10°C is too low. In Specification No.

TI/SPC/OHE/8WDHTW/0070 the

range is 0°C to 55°C.

This may be reviewed.

Tractors India (P) Limited

Reference site conditions to be

basis for the Generator set

package which includes all performances and Specifications

of items and major Components

are to fully comply reference site conditions.

Comment

Above is suggested to be added in view of critical importance of

Prime mover (Engine) and

Alternator (Generator)

performances and availability of outputs at reference site

conditions.

Climatic conditions mentioned in Specification may retain

3.

1.2.2

(c)

Maximum train

Acceleration 2.0g (g-being acceleration

due to Gravity)

Phooltas

There seems to be typographical error in place of maximum train

acceleration. “It should be

maximum lateral or transversal

acceleration”. Further, the maximum lateral/transversal

acceleration shall be 1 g in place

of 2 g.

2.0 g is correct.

4. 1.3.4 The evaluation of bids

shall, inter-alia, take

into consideration the

Fuel efficiency of the Diesel Engine. For

this purpose the bids

shall be loaded by capitalised cost of

additional fuel and

lubricating oil

consumption over and above the base

consumption at 75%

of the rated output of the diesel engine.

The lowest values of

fuel and lubricating oil consumption quoted

by the technically

suitable Tenderer

shall form the basis for the purpose of

comparison. The

bidders shall enclose


From the nature of application and

work to be carried out by the OHE

Car, there may be long idle operating hours for the

Equipments.

Hence, a performance review @ 25% of rated power of the Diesel

Engine, Alternator & packaged

Generator set may be considered.

This is a suggestion only. Operating hours for 25% of rated

power should also be mentioned

likewise 2000 hours is mentioned for 75% of rated power.

Both performances for Diesel Fuel

consumption as reported shall be demonstrated during routine tests

& also performance tests. Test

Reports for such fuel rates shall

be confirmed by the OEM of respective items.

The OEM shall also certify fuel

consumption performances at

Provisions in the Specification

may retain

Fuel and Lubricating

oil consumption in litres per hour at 75%

of the rated output of

the Diesel Engine as

issued by the OEM of the Diesel Engine.

The fixed parameters for evaluating the

capitalized cost shall

be as under :-

Life of the diesel engine :18 years

Annual operating

period :2000 hrs. -Cost of fuel per litre

-Cost of lubricating oil / litre

Prevalent on the date

of opening of bid

Rate of interest:12%

Reference site Conditions for

evaluation purposes.

5.

1.2(v)

Atmosphere during

hot weather Extremely dusty and

desert terrain in

certain areas.

The dust concentration in air

may reach as high as

of 1.6 mg/m³.

Phooltas

Please clarify whether wagon weight is 120 t each or both

together.

Each wagon shall be weighing

60 t. Two Wagons weighing 60 tonne each in gross load

condition i.e. total load would

be 120 t for two wagons

1.2.3

In many iron ore and

coalmine areas, the dust concentration is

very high affecting

the filter and air

ventilation system.

The OHE car shall be

able to negotiate water logged tracks

at 10 kmph, with

water level of 102

mm above the rail top, for which the

equipment shall be

suitably designed.


Any and all items, components, Assemblies should be above a

safe margin from the water

logging at 102 mms over rail top.

While the car is in movement, there may be ripples and the

water level may increase to cause

damages. Hence, the minimum clearance of 120 mms from rail-

top is to be maintained during

assembly. Comment

Clearance should be left over un-

answered for this critical issue.

Provisions in the Specification

may retain

6. 1.19 A Themovision Camera as per

RDSO‟s Specification

,Video Camera to capture picture at

100 kmph along with

software to transfer

the picture and video shoots on the

Computer, one

Hydraulic Jack of 5 t

Carriage Directorate “A Thermovision camera as per

RDSO‟s specification No….

to be mentioned and “thermovision” may be corrected

BHEL Specification for Thermo vision

Camera, Tirfer,Pull-lift is required.

BEML Specification for Camera may be

included.

1. Thermo vision camera as per RDSO‟s Specification

No.TI/Spec/OHE/0100.

2. Tirfor as per RDSO‟s Specification No.

TI/SPC/OHE/TOOLPL/0990

3. Pull- lifts as per RDSO‟s

Specification No. TI/SPC/OHE/TOOLPL/1990

capacity, one tirfer

(3t), two tirfer (3/2 t), three pull-lift 3/4t,

two pull-lift (3/2 t)

and one pull-lift (3t)

shall be supplied along with OHE Car.

7 1.2.1 Climatic conditions

1. Atmospheric temperature--

2. Humidity--100%

saturation during

Rainy season 3. Reference site

conditions

4. Rain fall 5. Atmosphere during

hot weather

Motive Power Directorate

The range & Maximum permissible limits for the Item

no 1,2,3,4,5 may be advised

Already provided in the

Specification

8 1.16.2

(iv)

Motorised Bogie

(complete with Break Gear)

BEML

Include Motor or without Motor

Traction Motors have been

included in specific para

9 1.21.1 AMC

The Tenderer shall quote for AMC

comprehensive of all

in all inclusive of all

Equipments including Traction Motors

Alternators, Diesel

Engine complete with transmission,

Compressor unit and

Cooling system for 3


In the clause, it is not mentioned that whether Engine

parts shall also be in the scope

of AMC.

The AMC shall cover all the

Equipments of Diesel Engine, Traction Motors and

Alternators.

years during the

warranty period of 36 months and

separately for 5 years

after warranty is

over. The Tenderer shall

quote year wise rates

of AMC detailing the various Schedule

enlisting the

requirement of

material/ spare parts and services to be

rendered by him after

regular intervals. The Tenderer shall

keep adequate spares

in stock for regular Schedule of AMC so

that maintenance

schedules are

completed timely. AMC shall be all

inclusive of

replacement of parts, if required either due

to breakdown or

wear. The AMC cost shall be considered

while evaluating the

inter-se tender

position.

It shall be compulsory

for the tenderer to quote for AMC.

However, the decision

to enter into AMC

shall vest with Railway alone.

10. 12 (ii)

Page 13

Performance

Capabilities


110 km/h to be changed to 105 km/h

11. 2.0

12 vii

Page 13

Weight of Wagons Carriage Directorate

“Wagon weighing 120 ton” may

be replaced by “Two wagons weighing 60t each in gross load

condition”

Two wagons weighing 60t

each in gross load condition

-Acceptable

12. 2.3.1 (ix)

Page

14

Driving Cab Full width single piece

Stone proof lookout

glass with Sun Screen shall be provided at

the end wall of each

Driver‟s compartment and these shall be

glazed, clear,

colourless polyOHE

carbonate to ICF spec no.ICF/MD/SPEC-159

(latest revision).

Carriage Directorate “PolyOHE carbonate” to be

replaced by Poly carbonate

Acceptable as “Polycarbonate”

13. 2.3.5 (iv)

Page

16

Facility on roof

Carriage Directorate “PolyOHE carbonate” to be

replaced by Polycarbonate

Acceptable as “Polycarbonate”

14. 2.3.5 (v) (b) page 17

Lifting and Swivelling

Platform width


Platform width 1600 mm but as per the Diagram 1 D of BG IR

SOD revised 2004 the width on

the top of MMD is 1520mm.

Therefore the width may be suitably reduced to avoid

infringement.

Acceptable. The width of the

Swivelling Platform shall be corrected as 1500 mm which

has been accepted during the

Design approval 8Wheeler

Diesel Hydraulic Tower Wagon of M/s. BEML

15. 2.3.1 (X)

Provision of Wind Screen Wiper Arm

and Blade Assembly

to be provided.

BHEL Wiper Assembly to RDSO

Specification No. C-K306 will be

provided. This Wiper to RDSO

Specification No. C-K306. However, doesn‟t have provision

of water spraying.

Acceptable.

16. 3.1.6 Page 20

Under Frame The underframe

material shall be of

corrosion resistant

Structural Steel to IRS: M 41 or Copper

bearing quality Steel

to IS: 2062 Cu WC, of welded integral

Structure. The under

frame design shall be

as per ICF Drawing No AC/DC/EMU/C2-1-

1-201 with latest

alteration. They shall be assembled in jigs

and fabricated by

welding. Trough floor

Carriage Directorate ICF Drawing No.

AC/DC/EMU/C2-1-1-201 is for

3660 mm wide EMU Stock and it

may not be suitable for 3250 mm wide stock. Therefore

Drawing No. may be deleted.

In above reference, the bogie has been suggested vide note No.SV.EMU.RAS dated 08.02.2012 by Director/VDG.

As far as under-frame suitable to DETC is concerned, it is stated that this specification is for purchase of DETC from trade and IR is not offering complete design to the manufacturers. Hence,

Acceptable The Drawing of Under Frame

of 8 wheeler Diesel Electric

Tower Car can be finalised at

the stage of Design/Drawing approval Stage.

of 2.0 mm thick of

Steel to IRS: M 41 steel shall be

provided in covered

area.

manufacturers should develop their own design of under-frame keeping in mind the layout of DETC. The firm should submit design to RDSO for approval at the time of design approval stage.

17. 3.1.11 Page 20

Sole Bar

These shall be

continuous members from headstock to

headstock,

adequately braced together to withstand

the head on loading

and cross racking forces and shall be

capable to withstand

jacking for the

purpose of lifting the OHE Car. The Sole

Bar shall be of

corrosion resistant Structural Steel to

IRS: M 41 steel.

The Design of Sole Bar shall be as per

ICF Drawing No

EMU/M2-1-1-541.


The Drawing No. EMU/M2-1-1-

541 may be deleted. Sole bar drawing may be finalized at

design stage.

Acceptable.

The Drawing of Sole Bar of 8

Wheeler Diesel Electric Tower Car can be finalized at the

stage of Design/Drawing

approval Stage.

18. 3.2.2 Four openings shall be provided in the

roof for erection of

catenary and contact wires in either

Phooltas Please confirm whether 4 opening

are required or 2 opening as

mentioned in Clause 2.3.2.

Two openings are acceptable on roof

direction. The

openings shall be of suitable size to permit

paying out of the

conductors in any

direction, when the OHE Car is moving

slowly at 5-10 km/h

speed, without any obstruction, rubbing

or scrapping.

19. 2.3.4.4 Staff Cabins

One Cabin for officers/staff with four

cushioned Berths

shall be provided. The Cabins shall have

separate entry and

have windows on

both sides. The Cabins shall

preferably be not

over the wheels and made sound proof as

far as possible. An

Indian style WC with separate over tank,

Stainless Steel Sink

and other accessory

fitting and a folding cushioned seat

including shower with

flexible Hose shall be

BHEL

Kindly confirm whether a single Staff/Officer cabin is required or

two Cabin each one for staff and

officer.

Single cabin is required.

provided. The WC

shall be provided with an Exhaust Fan.

The Officers/Staff

Cabin shall be

insulated properly and shall be air

conditioned. Provision

of two Mobile charging points to be

made in

Officer/Staff‟s Cabin

as well as in both the Driving Cab and

Working area.

In addition two folding Berths shall

be provided at

suitable location without Cabin.

Air Conditioned is not

required

20. 3.1.6 The Under frame

material shall be of

corrosion resistant Structural Steel to

IRS: M 41 or Copper

bearing quality Steel to IS: 2062 Cu WC, of

welded integral

Structure. The Under

frame design shall be as per ICF Drawing

No AC/DC/EMU/C2-1-

1-201 with latest


Drawing No. AC/DC/EMU/C2-1-

1-201 is 3660 mm wide EMU Stock and may not be suitable

for 3250 mm wide stock.

Therefore Drawing No. may be deleted.

BEML

The Under Frame to ICF Drawing

No. AC/DC/EMU/C2-1-1-201 pertains to EMU which has a width

of 3658 mm. The same is not

suitable for OHE with width of 3250 mm.

The under frame shall be

made as per SOD

requirement and got approved from RDSO.

alteration. They shall

be assembled in jigs and fabricated by

welding. Trough floor

of 2.0 mm thick of

steel to IRS: M 41 steel shall be

provided in covered

area.

21. 3.2.4 Air Space

The air space

between the outer

and inner sheeting of the roof shall be

suitably ventilated as

also the air space inside walls and end

walls. Attachments

may pass through the

air space as required, but must be

designed, so that

they do not cause sections to form

sealed chambers or

lodgements for condensed moisture.

BHEL

Details of methods of air

ventilation is required.

It shall be finalised at Design

approval stage

22. 3.3

Page

22

Windows

Lift type window

made of powder coated Aluminium to

ICF drawing No

EMU/4C/ASR-5-4-402


Drawing may be finalized at

Design stage. The Drawing No. may be deleted.

“Body Side Double sealed

glass windows for the air

Windows to be provided as

per ICF Design.

with latest alteration

with fixed type poly OHE carbonate louver

on top and movable

glass window at the

bottom.

conditioned officers/staff cabin

and inspection Dome” to be added in the clause

“polyOHE carbonate” to be

replaced by “Polycarbonate

Polycarbonate is acceptable

23. 3.4.2 Hinged doors

provided on the side

walls for entry of drivers from outside

of the OHE car shall

be of inward opening

type and will give an opening of 750 mm

approximately.

BEML

Door hinged or sliding optional

may be specified.

Doors shall be hinged type.

24. 3.5 Lavatories The OHE car shall

have one Indian style

lavatory, which shall

be provided with fittings of Stainless

Steel as being used

on passenger train and approved by the

RDSO.

BHEL we presume one Indian style

lavatories

Details given at para 2.3.4.4 above

25. 3.7.2

Page 33

Bogies

Bogie suspension design shall be coil

steel suspension in

primary and air

suspension in secondary stage. The

bogie design shall be

as per ICF Drawing No AC//EMU/M/ASR-

0-0-001 with latest

alteration.


Earlier 8 wheeler OHE are running at max. operating speed

of 105 kmph, whereas recently a

Speed Certificate No.

SV.EMU.RAS dt.12.10.2011 for 8 wheeler DETC (with air

suspension) has been issued for

max. operational speed of 95 kmph. Therefore significance of

using air suspension bogie may

be reviewed and accordingly the

Bogie Drawing may be changed

BEML

Bogie to ICF Drawing No.AC/DC/M/ASR-0-0-001 may be

EMU Bogie which will not suit the

OHE application.

Bogie shall be as per ICF

Drawing No.DMU/DPC-0-0001 with Latest Revision.

26. 3.8.4

Page

24

Wheel Axles and Axle

Box


“of Appendix 1 and width of

wheel shall be 127 mm minimum” may be deleted

Acceptable.

27. 3.8.5

Page

24

Wheel Axles and

Axles Box

The rim thickness of the wheel will be

adequate to provide

for specified wheel wear.


Clause 3.8.5 may be deleted

Acceptable

28. 3.8.16

(iv)

Side wall and pillars:

The material of body

pillar shall be IRS M-41. Pillars shall be

continuous from sole

bar to cant-rail, except below window

openings, and shall

be braced by

BEML

Side Wall Pillars shall be of

Stainless Material.

Not acceptable

longitudinal members

between adjacent pillars. Bracing being

designed to act as

integral part of the

exterior sheeting.

29. 3.9

Page

25

Brake System Carriage Directorate

Clause No.3.9.1 and 3.9.2 are

repeating these may be re-numbered.

Acceptable

30. 3.9.1

Page

25

Panel mounted air

brake system to

RDSO Spec: MP-0.01.00.19 (Rev-01),

June 2010


Repeated

“110 kmph” to be changed to “105 kmph”

BHEL

Air brake system will be provided

with Fabricated Console without provision of MU in place of Panel

mounted Air Brake system to

RDSO Specification MP-0.01.00.19 MU operation is not required for

DETC application.

BHEL comments are

acceptable.

31. 3.9.2

Page 25

The composition „K‟

type non-asbestos Brake Blocks to RDSO

Specification No. C-

9508 with latest revision/amendment

shall be used. Brake

Rigging shall be as

per ICF Drawing No. EMU/M-3-2-064 with

latest alteration shall

be provided to prevent the Brake

Blocks riding down

the Wheel tapers. The


The last line of the para mentioning the BC pressure of

1.6 kg/cm2 to be deleted.

Repeated

“Wagon weight 120t” may be

replaced by “Two wagons

weighing 60t each in gross load condition.”

Phooltas

Please clarify whether wagon weight is 120 t or both together.

Each Wagon weight is 60t

Brake Cylinder

pressure for 20.32 t Axle load Bogies shall

be 1.6 kg/cm2.

32. 3.9.3

(i)

Provision of

Emergency Brake Valve.

An Emergency Brake

in case valve in each Driving Cab on

extreme right hand

side.

BHEL

D-1 Emergency Brake Valve will be provided in both CAB for

Emergency Brake application.

BHEL‟s comments are

acceptable.

33. 3.9.3 (ii)

Provision of Stand-by -Brake, in case of

failure of Distributer

Valve or any component in the

main Brake system.

BHEL We will provide Air Brake System

having an additional C2W Relay

Valve exclusively for Braking from SA-9 Independent Brake.

It shall be decided at the time of design approval

34. 3.9.3

(iii)

Parking Brake to

RDSO Specification No. CK 408 (latest

revision) capable of

holding fully loaded OHE Car with 120 t

trailing load of two

loaded Bogie Flat

Wagons in un-braked state on 1 in 33 down

gradient under wet

condition.


“120t trailing load of two loaded bogie flat wagons” may be

replaced by “two trailing wagons

weighing 60t each in gross load condition”.

Phooltas

Please clarify whether wagon weight is 120 t or both together.

Each Wagon weight is 60t

two trailing wagons weighing

60t each in gross load condition---is acceptable

Total trailing load is 120t.

35. 3.9.5 Brake Rigging Carriage Directorate When Drawing of Brake rigging is mentioned in para 3.9.2 then para 3.9.5 may be deleted

Provisions of Specification

shall remain.

36. 3.10.3 Compreg to RDSO

Spec. No. C-9407 – type –II shall be used

for clamp.

BHEL

We will provide polypropylene clamps.

RDSO‟s Specification shall

prevail.

37. 3.10.4 Colour identification

scheme of pipes. Pipes, ducts and

conduits shall

conform to an identification colour

scheme. This shall be

approved by RDSO.

BHEL

We will provide colour stickers instead of paint because painting

on Stainless Steel pipe is not

possible.

Poly urethane Paint scheme

as per RDSO‟s Specification shall be followed.

38. 3.11 Page

27 &

28

Interior furnishing Carriage Directorate “LP sheet conforming to STR

No.C-K514 (Latest Revision)

may be used for thermosetting resin bonded laminated sheet for

the OHE car” to be added after

“IS: 2046”. And last sentence of

the para to be deleted.

Acceptable.

39. 3.12

Page

28

Ceiling and panelling Carriage Directorate

“may be used for the OHE

car.” To be added after “C-K601 (Latest Revision)”

“or Non-asbestos limpet Sheet

to RDSO Specification No. C-

K601 (Latest Revision)” to be deleted

Acceptable.

40. 3.13

Page 28

Flooring

Floor of the vehicle shall be as per ICF

Drawing No.

EMU/MASR-41-001


Drawing may be finalised at Design stage.

Therefore, Drawing No. may be

deleted.

ICF Drawing to be followed

with latest alteration.

The opening in the flooring for passage

of Pipes and Cables

through the floor shall

be so constructed as to prevent any

seepage of oil.

In addition to give effective protection

against the spread of

fire originating

beneath the Body.

41. 3.15

page

28

Cattle Guard

Detachable type

cattle guards shall be provided under each

buffer beam. The

cattle guard shall be

fitted with adjustable rail guards so as to

maintain the

minimum free space above the rails under

all conditions (see

item 7 of clause 2.0). i) Cattle guard and

RCF Drawing No.

EM26108 with latest

Amendment. Or Cattle Guard and

ICF Drawing. No.

EMU-2-6-046 with


Sub Para i) may be deleted.

The Drawing may be finalised at design stage

Cattle guard as per RCF

Drawing. No. EM26108 with

latest amendment.

latest alteration.

42. 3.22

Page 31

Parking Brakes

In case Parking Brakes are proposed

the features of the

Brake Actuator, its type and the

schematics of its

operation shall be furnished.


Sub Para (8) may be written as “Feature of the proposed parking

Brake Actuators, its type and the

schematics shall be furnished.”

Acceptable.

43. 4.0 Illumination

Driving Cabs, Staff

Cabins, Workshop & Storage space shall

be provided with

level of illumination of at least 30 lux at the

Working Plane level

(1 m above the floor

level). OHE Car lighting shall be

provided with 18 W,

600 mm x 26 mm double capped

Fluorescent Tube

lights along with its

fittings and Electronic Lamp Ballast as per

RDSO Specification

No. RDSO/PE/SPEC/TL/00

11-2000 (Rev.1) with

the latest revision

PS & EMU Directorate

Fluorescent tube light fittings

“with wire mesh guard” may be added.

BHEL

Speed should be 105 km/h in

Acceptable.

Wire mesh guard shall

provide protection to the fitting.

shall be used.

44. 4.3.2 Battery Charger for

charging Batteries of 110 V of 120 Ah

capacity Lead acid

maintenance free storage Batteries of

capacity as

mentioned at Clause No.5.3.2.20. The

Battery Charger shall

comply with ICF

Specification No. ICF/Elect/067 (Rev.1)

and Battery charger

for 24 Volts

ICF Specification No.

ICF/Elect/067 (Rev.1) mentioned in clause is for the

Battery Chargers provided in

EMU/MEMU motor coaches suitable for 100 V, 95 Ah

batteries.

BHEL

Para not complete. However, Battery Charger for 24 V Batteries

shall be Engine mounted charging

Alternator.

1. Battery Charger for 24 V

Batteries shall be Engine mounted charging alternator.

2. Battery Charger for

charging Batteries of 110 V of 120 Ah capacity. Battery

Charger shall be from RDSO‟s

approved Vendor as per Specification No.

RDSO/PE/SPEC/AC/0008

(Rev.2).

45. 4.3.4 A skid mounted

portable Diesel

Generator similar to

„Honda‟ make (petrol start Kerosene run or

Petrol start, Petrol

run) of 3 kVA (minimum), 240V, 50

Hz along with

transformer shall be

provided to meet 150 Amps light weight

IGBT welding

machine load and other Auxiliary load of

search lights (2x250

Watts), Emergency

BHEL

Details of Transformer may be

furnished. Also the scope of

supply welding machine may be clarified.

It shall be decided at the

time of design approval stage

light and for other

such purposes.

46. 4.5.2 Twin Beam Head light Twin Beam head

lights shall be

provided at both ends. The head light

shall confirm to

RDSO‟s Specification No

ELRS/SPEC/PR/0024

(Rev-1) Oct. 2004.

The operating voltage of Head Light shall be

110 V DC.

PS & EMU Directorate Twin Beam head lights in

EMU/MEMUs are provided as per

RDSO‟s Specification ELRS/SPEC/PR/0024 (Rev-1)

Oct. 2004; which is with DC-DC

convertor. The operating voltage of EMU/MEMUs Head Light is 24

Volts.

BHEL Head Light as per RDSO‟s

Specification No.

ELRS/SPEC/PR/0024 (Rev-1) Oct. 2004, the operating voltage of

Head Light shall be 24 V DC. For

this purpose 110/24 V DC-Dc as per RDSO Specification No.

ELRS/SPEC/DC-DC

Convertor/0021 Rev.1..

Operating voltage of head light may be accepted as 24

Volts DC.

24 Volts DC Supply for twin beam head light shall be

taken from 110 DC source

with DC-DC convertor.

47. 4.5.3 Tail light Two aspect (red and

white) LED type 24 V

15 W tail light shall

be provided at each end to comply with

General &Subsidiary

Rules of Indian Railways.


In EMU & MEMUs LED based

flashing type tail lamp having

one aspect (RED) is provided.

BHEL Specification of Tail Light may be

furnished.

May be accepted as PS & EMU Directorate‟s comments. Para

shall contain RED aspect Tail

Lamp. The Tail Lamp shall as

per RDSO‟s Specification No. RDSO/PE/SPEC/TL/0119-

2000 Rev. “0”.

48. 4.5.5 Marker light

Marker light of LED type as per RDSO‟s Specification No ELRS/SPEC/PR/0022 (Rev-1) Oct. 2004 shall be provided on either end of the OHE Car.


Provision of marker light needs

to be checked with respect to provision of two aspect (Red &

White) LED type tail lights as per

Clause No. 4.5.3 of the above Specification.

Comments of PS & EMU

Directorate are not acceptable

Marker light of LED type as

per RDSO‟s Specification No

ELRS/SPEC/PR/0022 (Rev-1) Oct. 2004 shall be provided

on either end of the OHE car.

49. 4.5.6 Search light BHEL It shall be decided at the time

OHE car shall be

provided with two 250 W searchlights

with Metal Halide

lamps, one on each

end, for inspection of the OHE while on the

run. Searchlights

shall provide a high intensity illuminating

beam and capable of

swivelling on

universal joint type supports.

Specification of search light may

be furnished.

of design approval stage

50. 4.5.12 Flood light

Four flood lights giving diffused light of

75 watts shall be

provided with each

OHE Car.

BHEL

Specification of the flood lights may be furnished.

It shall be decided at the time


51. 5.3.2.1 Diesel Engine

Two independent

under-slung naturally aspirated, turbo-

charged and after

cooled horizontal

diesel engines of proven design of

indigenous make (like

Cummins NTA 855 R), complete with all

accessories, suitable

for traction service


(i) The calculation for horse

power requirement as 285 hp, for operation in adverse

conditions referred in clause 2.0

of chapter –II may be

submitted. (ii) CRDI type injection system

in Engine is a special feature.

Reason for considering the same may be clarified. It has got

financial angle also. Either we

should for CRDI Engine or for an

BHEL

Horizontal word to be removed.

This is because vertical Engine can also be suitable for this

application. Power required for

lifting Platform may be drawn

from main power pack.


Two independent turbo-charged and after-cooled Diesel Engines of

proven and established design,

complete with all required

Two independent under-slung

naturally aspirated, turbo-

charged and after cooled Diesel Engines of proven

design suitable for 8 Wheeler

Diesel Electric Tower Car of

reputed make, complete with all accessories, suitable for

traction service under the

climatic and operating conditions obtained in India,

shall be provided. The engine

shall be of Common Rail

under the climatic

and operating conditions obtained in

India, shall be

provided. The engine

should be preferable of Common Rail

Direct Injection

(CRDI) type. Alternative proposal

with other

indigenously

manufactured, proven designs of horizontal

diesel engines may be

offered. The continuous traction

rating of each engine

shall not be less than 285 hp or higher at

1800 rpm after due

de-rating for

environmental temperature of 55

0C. It shall be

battery started. Specific Fuel

Consumption (SFC)

shall be low. Robust construction, low

maintenance and

satisfactory record of

past performance are

ordinary Engine. accessories, suitable for traction

services under the climatic and operating conditions in India shall

be provided.

The Engine(s) shall be with

electronically controlled fuel injection and control system of

latest proven designs to conform

to emission norms and best of performances under variable load

conditions as essential for the

application. The Electronic Fuel

system should provide low fuel consumption at reference site

conditions in actual application

with variable loads. The Diesel Engine, electronically

controlled, should provide self-

diagnostic details which on demand should be able to provide

information on defects / faults,

Alarm details etc. so that

maintenance & repair is done within shortest possible time-line.

Continuous duty Power rating of

each Engine must not be less than 285 HP @ 1800/2100 RPM or

higher as required & established

at reference site conditions of 550C & 1000 Mtrs AMSL as

mentioned in 1.2.1.3.

Adequate and sufficient

allowances shall be incorporated

Direct Injection (CRDI) type.

Alternative proposal with other indigenously

manufactured, proven

designs of horizontal diesel

engines may be offered. The continuous traction rating of

each engine shall not be less

than 340 hp (approximately) or higher at 1800 rpm after

due de-rating for

environmental temperature of

55 0C. It shall be battery started. Specific Fuel

Consumption (SFC) shall be

low. Robust construction, low maintenance and satisfactory

record of past performance

are of paramount importance. Tenderer shall furnish full

particulars of the engine with

the offer. Adequate allowance

shall be made in the power of the diesel engine for the de-

rating under most adverse

climatic conditions stated in Clause-1.2 of Chapter-I of

this specification. Successful

tender shall give detailed calculations for engine‟s

suitability and its rating.

of paramount

importance. Tenderer shall furnish full

particulars of the

engine with the offer.

Adequate allowance shall be made in the

power of the diesel

engine for the de-rating under most

adverse climatic

conditions stated in

Clause-1.2 of Chapter-I of this

specification.

Successful tender shall give detailed

calculations for

engine‟s suitability and its rating.

while working out on-site power in

application with derations and Power losses as encountered

under adverse operating

conditions.

The Engine shall be suitable for 24 VDC batteries starting. The Engine

should be of robust construction

with low maintenance requirements and satisfactory

performance levels. Regular

Engine service & maintenance

requirements and schedules are to be clearly indicated and confirmed

by OEM.

52. 5.4.1

page

38

The cooling

Equipment shall be

guaranteed to work efficiently under the

climatic conditions

specified in Para-1.2 of Chapter- I of the

Specification.

The Radiator and fan

shall be of adequate capacity with 30%

choked condition of

the radiator used. Air

Phooltas

As roof mounted radiator has

been specified, 15 % chocking factor. Kindly be accepted. 30%

chocking factor radiator can also

be supplied but will unnecessarily add to the cost hence, we request

that this clause may please be

amended.

Specification Para shall be

retained.

flow required for the

radiator fan shall be at least 15% more

than that actually

required to make up

for any reduction in air flow due to train

movement. The

limiting ambient capability of the

cooling system shall

be minimum 55 0 C

with 30 % chocked condition

53. 5.4.4 The maximum

operating water temperature shall

normally not exceed

950C.


The maximum operating temperature of engine cooling

system along with alarm

temperature and shut-down /

safety shut-off temperature are to be mentioned in submission.

Comment: All modern engines are

with pressurised cooling system to accommodate higher

temperatures and better cooling

performances. All modern engines operate at about 920 to -980C with

alarm and shut-off at about 1040C

& 1100C.

Specification Para shall be

retained.

54. 5.4.8 Cooling Proving trials shall be carried out in

a test bed at the

contractor‟s premises

Phooltas Trial may kindly be carried out on

the Car in filled during

commissioning in place of

Test to be carried out in the firm‟s (OEM) premises

to prove the

adequacy of the cooling system

comprising of radiator

and Hydraulic Oil

Cooler for the prototype in the

presence of RDSO‟s

representative. The procedure for such

testing shall be

submitted and got

approved from RDSO.

manufacturer premises.

55. 5.4.10 Page 39

The Tenderer shall

submit drawing for

mounting details of Radiator Assembly,

Fan drive

arrangement and

ensure that these fit completely within the

overall dimensions of

OHE Car.

Phooltas

Compressor capacity of Cummins

Engine is 5 CFM at low idle speed, hence, Cummins are requested

that the same may be amended

accordingly.

It shall be decided at the time


56. 5.5 The CRDI Engine shall

be electronically

controlled using

suitable and proven ECUs.

Phooltas

Cummins are offering a proven

mechanical Engine for this

application. The same is already used and performed satisfactorily

in earlier DETC manufactured by

ICF. However, please note that they have offered Electric

Governing system for engine

control (LCC) as well as man

Electric Governing system for

engine control (LCC) as well

as main Traction Alternator

excitation control to be provided.

traction alternator excitation

control. Please amend this clause accordingly.

57. 5.3.2.12 The Exhaust pipe

shall not leave OHE

carbon soot on important assemblies

like Traction Motors,

axle drive etc. The pipe shall be taken to

the roof with

adequate insulation

to with stand 7000C. The silencer shall be

provided on the

dished rooftop.


Describes that the

Pipes shall be taken to the roof. It is mentioned that the Exhaust

Pipe alongwith silencer, shall be

provided on dished roof. The reason for considering this type

of design may be advised.

However, in case of under slung

power pack, the Exhaust pipe is provided horizontally and

located under floor avoiding the

position near footsteps of the Vehicle.


Remarks are acceptable

58. 5.3.2.19 The Exhaust Emission

shall be below the

limit laid down in UIC/ORE No.

B13/RP22/E Clause-4

of the entire engine range of operation

from idle to full power

and shall be

measured as per UIC/ORE/B13/RP21E.

The exhaust opacity

shall not exceed 20 as measured by

Hartridge smoke

Meter or equivalent

BHEL

The exhaust emission shall be

below the limit laid down in UIC/ORE No B13/RP22/E


Indian Pollution Control Requirements for Heavy Road Vehicles as per circular / Pollution Control Board to mention ........

Existing Specification shall be

retained

scale under all

conditions including acceleration of the

Engine. A suitable

catalytic converter

shall be connected in Exhaust Pipe to limit

the Emission.

59. 5.3.2.20 The tenderer shall supply the complete

system including

Engine starter and

Battery Chargers. Batteries shall be of

following ratings:-

24 V, 290 Ah Battery for Engine

cranking.110 V,

120Ah Battery for

control and auxiliary circuits.

BEML 24V, 290 Ah Battery RDSO

standards to be incorporated.

Battery Charger for 24 V batteries shall be Engine

mounted charging Alternator

60. 5.7.7,

5.8 & 5.9

Traction Motor, Motor

suspension & Axle Drive & Bearings

Tower wagon shall

be fitted with 4

traction motors, two on each bogie, The

motors shall be typed

4601 BX with pinion and earth return

brush assembly as

per BHEL schedule


All types are Traction Motors including Traction Motors

provided in EMUs & MEMUs are

dealt by traction motor group of

Electric Loco Directorate. The comments on detailed

design parameters and

suitability of BHEL make 4601 BX Traction Motor may be

obtained from traction motor

group of Electric Loco

CGL

Tower Wagon shall be fitted with 4 Traction Motors, two on each

bogie. The Motors with pinion,

Earth return brush the motor shall

be of DC series wound. The motor shall be complete with all its

accessories and shall include

pinion, earth return brush, gear wheel and gear case. Field proven

motor suitable for DETC

application shall be supplied.

Tower Wagon shall be fitted

with 4 Traction Motors, two on each Bogie, the Motors

shall be type 4601 BX (BHEL

make) or TM 2141A (CGL

make) or similar proven design.

The DC Series Motor shall be

complete with all its accessories and shall include

pinion, earth return brush,

gear wheel and gear case.

item No 000501 B

and gear case as per schedule item No

000502 B and shall

be series wound

working on the pulsating current.

Directorate. Phooltas

Please amend to BHEL/CGL in other approved make.

BEML

TMS of BHEL make or any other

equivalent which are used in similar rail application.

Field proven motor suitable

for DETC application shall be supplied.

61. Motor rating

The one hour rating of Traction Motor

shall be of 97%

excitation and

continuous rating shall be adequate t

give the required

performance. The motor will be

provided with 3%

permanent ohmic

field shunting.

Motor Suspension &

Axle drive The traction motor

nose suspended with

plane sleeve bearing arrangement. Each

Traction Motor shall

be drive one axle of

its motor bogie through a single

reduction gear drive

enclosed in a rigid

5.8.1

Four Axle hung, Nose

suspended and self ventilated DC series Traction Motors of

proven design and approved

by RDSO two on each Bogie,

shall be provided on the OHE Car. The Armature coils shall

be formed of polyimide

(kapton) covered Copper Conductors and suitably

impregnated.

TIG/MIG welding shall be used for the Commutator.

The technical/ constructional

requirements as given in

Annexure – 6 shall be complied with the traction

motor of similar design and

construction with proven performance in traction

application on IR will be

preferred. Traction motors shall be 4601 BX type of M/s.

BHEL or TM 2141 A of M/s

CGL type or similar proven

and water tight gear

case firmly secured to prevent damage by

movement and

vibration under the

most severe operating condition

but easily removable

for attention to the gear.

The armature shall be

mounted on anti-

friction bearing of approved make. The

inner race shall have

adequate interference for the duty.

design with Plains Sleeve

Suspension Bearings. Class of insulation of TM shall be “H

class” (180 0C Class). Each

Traction Motor shall have

minimum output not less than 115 KW (Approximately).

62. 5.8.1

(iv)

Two auxiliary self-

cooled, Brushless

Alternators, one with each Engine, shall be

provided in the

Inspection OHE Car with suitable

Regulating Equipment

and Battery Charger to supply 122 V

D.C.+ 5% regulated

voltage from idle

speed to maximum speed of the engine

for meeting the

following loads:-

BHEL

Source of Power for search light

may be clarified. As per Clause No. 5.8.1, it is from Auxiliary

Alternator, whereas as per clause

No. 4.3.4 is from skid mounted portable 3 kVA Diesel Generator

Set.

One Auxiliary self-cooled,

Brushless Alternators with

each Engine shall be provided in the inspection OHE Car

with suitable Regulating

Equipment.

i. Battery Charging

(110 volts, 120 Ah Batteries) provided

on the OHE Car- 10

Amps.

ii.Lights and fans load of the OHE

car-25 amps.

iii. Flood Lights iv. Search lights

v.Control System 10

Amps.

vi. Twin Beam Head Light of 250

watts,110 V D.C. as

specified in Chapter-IV of

this Specification.

vii. Power required for forced cooling

for Rectifier, if

warranted,

approximately 1 kW.

viii. Heater load one

each of 1 kW in both the Cab.

ix. The Air

conditioning & Ventilation load of

observation Dome

and Officer‟s

Cabin.

The Alternator shall

have a rating of minimum 9

kW.(Electrical load

requirement shall be

got approved from RDSO)

63. 5.8.2.1 Drive Arrangement

The Auxiliary Alternators shall be

driven from the main

Engine by a single

pulley and V-belt arrangement.

BHEL

Drive arrangements for Auxiliary Alternator may be clarified as per

this clause it is from Engine end,

whereas as per clause no. 5.7.5.4

it is through alternator end.

The Clause 5.7.5.4 shall be

corrected as “The provisions shall be made for driving the

Auxiliary alternator and Air

Compressor through a

common shaft extension from Engine through V-Belts and

pulley on the extended shaft

of the Engine, Pulley of C-section to IS: 3142 shall have

a suitable PCD to be approved

during Design approval stage.

The Pulley shall be push-fit with suitable securing

arrangement. The material of

the Pulley shall be steel forged conforming to IS:

2004 gr.III”

64. 5.10 Motor contactor

Motor Contactor of BHEL supply, one

Contactor for each

Motor, suitable for operation in

combination with

overload Relays, for


ICF Drawing No. EMU/M2-9-0-503, is applicable for installation

of under slung equipments in BG

AC EMU stock only. The installation of control equipment

in OHE Car may be different, as

there are other equipment like

CGL

Motor Contactor One Contactor for each motor,

suitable for operation in

combination with overload Relays, for opening the Traction Motor

circuit in overload and under fault

condition shall be provided. These

RDSO/ICF approved make

shall be added in place of BHEL.

opening the Traction

Motor circuit in overload and under

fault conditions shall

be provided These

Contactors shall be located in dust-proof

cubicle mounted on

the under frame in such a way as to

prevent all risk and

damage to other

apparatus from arcs formed by their

operation. Mounting

of the motor switch group No.1 and 2

shall be as per ICF

Drawing No. EMU/M2-9-0-503 (latest).

diesel-alternator set etc., which

may be required to be mounted under slung.

Contactors shall be located in

dust-proof cubical mounted on the under frame in such a way as to

prevent all risk and damage to

other apparatus from arcs formed

by their operation. Remarks of CGL

We will not able to supply BHEL

make contactor. They be CEW make which is an approved

supplier for same application in

700 & 1400 Hp DEMU.

BHEL ICF Drawing No. EMU/M2-9-0-503

(latest) may be provided.

Phooltas please amend to BHEL/CGL in

other approved make.

65. 5.10.7.2 REVERSER

Electro pneumatically

operated Reverser of BHEL make for

changing the

direction of rotation shall be provided in

each Motor circuit.

These shall be

mounted in cubicle on the under frame and

shall be of robust

design, remote

Phooltas

Please amend to BHEL/CGL in

other approved make. CGL

Electro pneumatically operated

Reverser for changing the direction of rotation shall be

provided in each motor circuit.

These shall be mounted in cubicle

on the under frame and shall be of robust design, remote operated

and suitably interlocked to ensure

that no movement can take place


shall be added in place of

BHEL.

controlled and

suitably interlocked to ensure that no

movement can take

place while they carry

current. Provision shall be made for

hand operation. In

emergency, the Reverser Contact

shall have self wiping

action.

while they carry current. Provision

shall be made for hand operation, the reverser contact shall have

self-laping action.

Remark

We will not be able to supply BHEL make Reverser. The supplier

will be approved supplier for the

same application in 700 & 1400 hp DEMU.

BHEL

With respective to remote control

reverser, we understand is that the operation from driver‟s desk.

BEML

Reverser of BHEL or any other equivalent which are used in

similar rail application.

Operation from Driver Desk is

to be kept.

66. 5.10.7.3 Mounting

arrangement shall be as per ICF drawing

No. EMU/M2-9-0-503

(latest alteration)


The comments against the clause no 5.10 as per para7

above.

Mounting shall be under

slung.

67. 5.10.7

.4

Motor cut out switch

Two four position

rotary switches, of

BHEL make, one for motor 1&2 and other

for motor 2&3 shall

be provided. The first switch will have

position marked as

„Normal‟ 1 out‟,‟1 & 2‟


Motor cut out switches given in

the clause are as per the control

circuit of AC EMU and MEMUs. Suitability/Requirement of these

motor cut out switches are to be

checked as per the requirement of the control circuit of the self-

propelled OHE car

Phooltas


other approved make.

CGL Motor cut out switch: Two four

position rotary switches, one for

motor 1 & 2 and other for motor 3 &4 shall be provided. The first

switch will have position marked

as „normal‟, „1 out‟, „1 & 2 out‟


shall be added in place of

BHEL.

out and „2 out‟. The

second switch shall have markings

„normal‟, „3 out‟,‟3

and 4 out‟ and „4 out‟.

The switches shall have 16 contacts to

provide various

facilities for control as required including the

following.

and „2 out‟. The second switch

shall have marking „normal‟, „3 out, „3 and 4 out‟ and „4 out ‟.The

switches shall have 16 contacts to

provide various facilities for

control as required including the following.

Remark: We will not be able to

supply BHEL make reverser. They supplier will be approved supplier

for the same application

BEML

Motor cut out switch two, four position rotary switches of BHEL

make or any other equivalent

make which are use in similar rail application.

68. 5.10.7.5 Motor Negative cut

out switch

Hand operated motor negative contactor

switch of BHEL make

shall be provided on the negative side of

the motor and it shall

be possible to isolate defective motors both

on positive and

negative side.

Suitable interlock as required shall be

provided. The

contactors shall be of


Suitability/Requirement of the

motor negative cut out switches are to be checked as per the

requirement of the control circuit

of self-propelled OHE car.

Phooltas


other approved make. CGL

Negative cut out switch are not

required for the subject application. Negative Contactor

shall be provided on the negative

side of the motor circuit and it shall be possible to isolate

defective motor both on + ve & -

ve sides switch interlocks as

required shall be provided. The Contactors shall be of adequate

capacity to with stand the short

circuit current.

Remarks of CGL are agreed.

This Para shall be modified

accordingly.

adequate capacity to

withstand the short circuit.

BEML

Motor negative cut out switch hand operated motor negative

contactor switch of BHEL make

are any other equivalent make

used in similar rail application.

69. 5.11 All motor contractors

on OHE car shall be

suitable for a remote operation from any

driving cap through

the contractors shall

be of Elctro pneumatic type of

BHEL make shall be

provided with blow out coils and arcing

horns, etc to brake

the current without

deriment to their working parts or

adjacent equipment.

All contact trip, interlocks, pins and

plungers etc. Shall be

easily accessible for maintenance.


ICF drawing No. EMU/M7/ASR-7-

0-706 (latest version) is the schematic diagram for control

circuit specifically for AC EMUs

and MEMUs. The same may not

be applicable for self propelled OHE Car.

CGL

All motor contractors on OHE car

shall be suitable for remote operation from any driving cab

through traction motor overload

„reset‟ switch. The motor

contractor shall be of electro pneumatic type and shall be

provided with blow out coils and

arcing horns, etc. To break the current without detriment to their

working parts or adjacent

equipment. All contact trip,

interlocks, pins and plungers etc. Shall be easily accessible for

maintenance.

Remark We will not be able to supply

BHEL make contractor. They be

CEW make which is an approved supplier for same application in

700 &1400 hp DEMU.

Phooltas

Please amend to BHEL/CGL in other approved make.

CGL remarks are acceptable.

70. 5.12 A

(a&c)

Connection and

operation of the


ICF Drawing No. EMU/M7/ASR-

Phooltas

Phase to phase voltage is not

Successful Tenderer shall

submit the Drawing for

to 45

contractors shall be

as per ICF Drawing No EMU/M7/ASR-7-0-

706(Latest Version)

7-0-706 (latest version) is the

schematic diagram for control circuit specifically for AC EMUs


be applicable for self propelled

OHE car.

required, thus the clause may

kindly be deleted.Control battery is also not required, the same

may kindly be deleted. This

amendment has been requested,

by traction equipment supplier. BHEL

ICF Drawing No. EMU/M7/ASR-9-

0-706 (latest may be provided).

connection and operation of

contactors at Design approval Stage.

71. 5.13 The motor contactor

shall open the circuit

they protect

automatically on over load and shall be

capable of clearing

the resultant arcs under all conditions of

overload.


ICF Drawing No. EMU/M7/ASR-

7-0-706 (latest version) is the

schematic diagram for control circuit specifically for AC EMUs


be applicable for self propelled OHE car.

This provision shall be

covered in Traction Motor

Portion.

72. 5.13.1.3

Suspension Bearings Taper roller suspension bearing shall be grease

lubricated.

BHEL As per clause 5.8 bearing mentioned is plane sleeve bearing, where as

against this clause it mentioned as tapper roller bearing. Same may be Clearfield.

Plain sleeve Suspension Bearing shall be in place of taper roller

Bearings

73. 5.13.1.4 & 5.13.1.5 (Pg 44 of 80)

PS & EMU Directorate Traction Motors are dealt by traction motor group of Electric loco directorate accordingly. Comments may kindly be obtained from Electric Loco Directorate.

This Para shall be covered in TM portion

74. 5.16.2

(iii &

iv)

A suitably designed control panel shall be provided in the OHE car for housing all

Phooltas

Cummins does not recommend to

monitor fuel pressure as well as

Both the gauges have been

removed from the

Spoecification

the control accessories. The panel shall be so situated so as to provide easy access to all the components for their maintenance /service.

the boost pressure, hence gauges

for this parameter will not be supplied. Please amend the

clause.

75. 7.6.1

P-55

All steel castings wherever used and welding joints shall be subjected to radiographic testing after manufacture / repair, to a suitable scheme/ standard suggested/approved by RDSO.

Phooltas

RDSO has accepted the ultrasonic testing of welding joints. This

clause may kindly be amended

accordingly.

Not Acceptable

76. 7.7 Page

55

One of the power and trailer bogies shall be subjected to exhaustive stationary tests at Contractor’s works in the presence or RDSO representative

Carriage “Trailer Bogie” to be deleted.

Phooltas There is no trailor bogies are to

powered. In case approved bogie

design is used the test should be waived please amend suitably.

Acceptable

77. 7.10

Page

56

Riding Quality The riding quality tests shall be conducted at a speed which is 10% higher than the maximum specified operating speed, i.e. 121 km/h on a section of mainline track over which there are no temporary speed restrictions and which is considered by the railway

Carriage Directorate “121 km/h to be replaced by

“115 km/h. Test shall be conducted as per

RDSO conventional DAS method as mentioned in MT-334

New Para for EBD test at Maximum operating speed (Arrived by Oscillation trials) to be added in the specification

BHEL Since the design of Bogie and suspension is of Indian Railways, the prime responsibility of performance is lies with Indian Railways.

Views of Carriage are acceptable

as being in a generally run down condition for main line standards but without speed restrictions. The tests shall be conducted from a reasonably low speed, which is considered safe by the Indian Railways, upwards insteps of 10-15 km/h to establish the performance at the specified speeds.

78. 7.11 Acceptance criteria The dynamic augment at maximum speed of 110 km/h plus 10% shall preferably be within 50% at rail level. The lateral forces at maximum speed will be within 4-t per axle. The vertical acceleration shall not exceed 0.3 g both in vertical and lateral modes in tare and loaded conditions. The sparling ride index shall not exceed four. The derailment co-efficient shall not exceed one. OR, latest as laid down by RDSO at the time of inspection or oscillation.

Carriage Directorate “110km/h” to be replaced by

“105 km/h” “OR” mentioned in 5th line may

corrected

BHEL Since the design of bogie and suspension is Indian Railways, the prime responsibility of performance is lies with Indian Raiways. Maximum speed is 105 kmph.

110 kmph speed shall be kept.

79. 2.12 (ii)

Period of continuous running at 110 km/h on

BHEL Speed should be 105 km/h instead of

generally tangent track

followed by frequent to and fro movement at walking pace for 1-1/2h)

110 kmph, as max speed of car is

specified at 105 kmph.

Annexure 1 80. Sl.

No.09

Under Frame Carriage Directorate

Drawing No. ICF Drawing No.

AC/EMU/M/ASR-0-0-001 may not be suitable for 3250 mm wide

stock. Therefore, Drg. No. may

be deleted.

The Drawing of Under Frame

of 8 wheeler Diesel Electric

Tower Car can be finalised at the stage of Design/Drawing

approval Stage.

81. Sl. No.

11

Bogie Design Carriage Directorate Comments same as S.N. 11

above

Bogie shall be as per ICF Drawing No. DMU/DPC-0-0-

001 with latest alteration.

82. Sl. No.12

Windows Carriage Directorate Comments same as S.N. 10

above

83. Sl.

No.12

Flooring Carriage Directorate

Comments same as S.N. 22 above

Annexure 2

84. Sl. No.1

List of Drawings/Calculation

Carriage Directorate “OHE OHE Car” to be corrected. Layout Drawing Should contain

end view of the OHE superimposed on Diagram 1 D of BG SOD Revised 2004

Acceptable

85. Sl.No.21,31 & 46

List of Drawing/Calculation

Carriage Directorate OHE OHE Car to be corrected

Acceptable

86. New Clause

Fire prevention measures:

PS & EMU Directorate The relevant provision of code of practical for prevention of fire on

PS & EMU Dte comments are acceptable

EMU stock no RDSO/PE/CP

/EMU/0001 (Rev.0) of August‟2003 and amendment no 1 of July 2006 issued by RDSO shall be included.

87.

General

Carriage Directorate The comments on the equipments such as traction motor, rectifier, cables etc. may be obtained from Electric Loco Directorate. In addition to the above, numbering of the

clauses of the above specification is required to be corrected. Desired operational speed EBD on level track with two un-braked

wagons of 60t each on levelled/gradient track should be mentioned in the specification. It is suggested that EBD should be verified from software available in the Motive Power Directorate. It should be checked from GR/SR that whether two un-braked wagons with one power car is permitted as GR/SR or not. However, the operability of the two un-braked Wagon may be checked according to G&SR before finalising the specification.

Noted

88. M/s. Titagarh Wagons limited As you may be already aware, M/s Titagarh Wagons Limited is keen to participate in the above tender by virtue

of having expertise and experience of manufacturing and supplying self-propelled 25kV ac BG EMU rolling stock

to Indian Railways, which are in operation on IR network for over 2 years now.

We have studied the revised “draft” Specifications No. TI/SPC/OHE/8WDEIC / 0090(2/09) Rev “1” of August,

2011 for the tendered item, available at your website and have found that the manufacturer is required to

design a completely new vehicle with necessary design calculations required to be submitted to RDSO for

Noted

approval as per the clause no.3.22, (a) 1 to 8, page no. 29 of technical specifications.

In this connection we would like to submit our comments as below:

1. The tendered quantity is small (55 nos.) and the DETC business is limited to small numbers due to the very nature of the stock. Developments of new platforms can be undertaken for products of recurring demand and in

good numbers. Detailed design calculations for new platform is a very expensive exercise and would needlessly make the product expensive and make the evaluation more difficult. The calculations needed on a rolling stock are very time-consuming and money- intensive. Reinventing a fresh/new design would make the product unreasonably expensive. The need for transfer of technology (TOT) from a designer / manufacturer cannot be

ruled out. In the process new design and development costs for such small numbers would make the stock unreasonably expensive for acceptance by the Railway Board.

2. As DETC is a maintenance-cum-emergency vehicle to be manufactured in small numbers, it is imperative to

have common designs for IR. New designs would impose new maintenance practices and schedules, which

would be different from the existing stocks. IR is already facing problems in assimilating various new designs

of 4-Wheeler DETC. As has been discussed in various fora, maintenance of DETC is causing serious concerns

all over IR on account of non-standardization of the product. A further proliferation of designs would strain

the already stressed system.

3. A new design can take a long time to go through the rigors of final acceptance by IR thereby causing

considerable loss to the exchequer in the process.

4. Designing a new rolling stock of this nature would considerably narrow the expanse of competitive bidding,

restricting the participation to a limited few.

5. Bogie: The revised draft Specifications of August 2011 specifies that the bogie should conform to existing ICF

bogie design applicable for EMU Motor coach (drawing no. AC//EMU/M/ASR-0-0-001). EMU Motor coach

bogies, as you are aware, are tested and approved by RDSO to run at 100 kmph operating speed and a

maximum test speed of 110 km/hr on IR network. On the contrary, the stipulations for operating speed for

the tendered DETC has been specified to be 105 kmph (clause No. 2.0, sub-clause 9, Page No.12 of

Technical Specifications) for which the vehicle needs to clear maximum test speed of 115.5 kmph (+10%).

However, incase the operating speed of 105 kmph for the DETC is to be achieved, a new bogie would be

required, which would be a very tall order since bogie approval process is very rigorous and stretch much

longer. Further, the bogie and the new design of body will have to be dynamically matched in order to

achieve the specified speed potential.

It is hence in the interests of all stakeholders that the 8-Wheeler tower wagons be inducted into IR on

common design platform. This would eliminate the need of separate designs for a very small stock and also

eliminate the requirement of detailed design review by IR for all the aspects of design (Detailed FEA,

Dynamic analysis, Stress analysis, Transmission, Oscillation Trials etc.). Matching of power demand by

traction motor for different operating conditions and demand on the power pack (para 5.2, page No. 35 of

the technical specification) and also development of characteristics curves etc will involve detailed designing

calculations. Moreover standard designs available on IR have proven to be very reliable.

In the meantime, please recall that ICF already has a proven design of a similar DETC vehicle which are

plying successfully on the IR network.

In view of the above we earnestly request you to proliferate this existing ICF design of 8-Wheeler DETC with

respect to the current tender referred above since it is common wisdom that a common design will make IR

accommodate a wider participation of capable rolling stock manufacturers and its decision-making more

simple, transparent and fast, which shall ensure a cheaper and easier-to-maintain product, and avoiding the

time consuming binding requirements of oscillation trials, speed certification etc.

In a nutshell, the benefits to MoR will be as follows:

Substantial savings in procurement cost and time Substantial savings in cost of maintenance Ease of maintenance therefore savings by way of quicker uptime Wider participation of Indian rolling stock manufacturers Ensuring level playing field at the bidding stage Faster and transparent evaluation of bidding process

We thank you for your kind patronage as always and now look forward to your favorable response.

draft (qms document no. qo-d-7.1-2 ver.-3), after approval of...

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