government of india ministry of railways specs (draft).pdf · 4 lube oil consumption equal to or...
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GOVERNMENT OF INDIA MINISTRY OF RAILWAYS
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SPECIFICATION FOR SUPPLY, INSTALLATION AND COMMISSIONING OF NEW GENERATION POWER PACK FOR RETROFITMENT ON 16
CYLINDER 251 SERIES ALCO D-E LOCOMOTIVES DURING REBUILDING/NEW MANUFACTURING AT DLMW
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Specification No: MP.0.08.00.99 November - 2011
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RESEARCH DESIGNS & STANDARDS ORGANISATION LUCKNOW – 226 011
SPECIFICATION FOR SUPPLY, INSTALLATION AND COMMISSIONING OF NEW GENERATION POWER PACK FOR RETROFITMENT ON 16 CYLINDER 251 SERIES ALCO D-E LOCOMOTIVES DURING REBUILDING/NEW MANUFACTURING AT DLMW.
1. Background:
Indian Railways are planning to procure 50 new generation power packs in order to achieve higher horsepower ie in the range of 3300 HP with low emissions and high fuel efficiency.
2. Definitions: Throughout this document, the term:
• ‘IR’ means Government of India, Ministry of Railways, Railway Board, New Delhi or its nominees.
• ‘Supplier’ means the firm/company submitting the tender offer for design, development, manufacturing, commissioning and supply of materials against this specification.
• ‘EFI’ means Electronic Fuel Injection System for Locomotives. • ‘RDSO’ means Research Designs and Standards Organisation of Ministry of
Railways. • ‘DLMW’ means Diesel Loco Modernization Works Patiala of IR. • The ‘Power pack’ means basically the diesel engine of locomotive and the
engine support system which will be used for retrofitment on existing ALCO locomotive along with such additional support/adaptation systems that make the locomotive complete and ready for working. For the purpose of this specification and within the meaning of this description, the new generation power pack would mean such an engine along with the engine support system which the supplier would be supplying.
• The ‘Retrofitment’ shall be considered to have been achieved after completion of the process of installation of new Power pack and support/adaptation systems in place of the existing ones, and, all other processes which make the locomotive complete and ready for working.
• ‘Rebuilding’ or ‘Rehabilitation’ refers to the maintenance schedule which is presently carried out at DLMW at an age of approximately 18 years of WDM2 locomotive and whose scope of work is as given in Annexure I. For the purpose of this Specification, such a scope of work shall be considered to extend upto the final dispatch of the locomotive after having been upgraded to become equivalent to a WDM3A class of locomotive having rated power of 3300 HP.
• The term ‘Locomotive’, in addition to existing WDM3D, includes WDM2 (2600 HP) of IR which after having undergone the said retrofitment during rebuilding shall get upgraded to become equivalent to a WDM3A class of locomotive having rated power of 3300 HP along with all the systems/subsystems. Thus, the power pack is expected to work with the system environment equivalent to that of WDM3D locomotive or a WDM3A class of locomotive having rated power of 3300 HP.
• The details of WDM2 locomotive such as (a) Main particulars (b) Equipment lay out to Drawing No. SK.DL‐2967 and (c) Floor Frame Assembly to Part No. 11030010 are as given in Annexure II.
• The details of WDM3D class of locomotive such as (a) Main particulars (b) Equipment lay out to Drawing No. SK.No.‐2317 and (c) Floor Frame Assembly to Part No. 11531137 are as given in Annexure III.
3. Scope of supply: In addition to the power pack, the following, in respect of which if it is not mentioned specifically, shall also be within the scope of supply in order to achieve complete retrofitment: (i) The supplier shall provide detailed data which shall include (a) modified
assemblies proposed if any (b) outline dimensions (c) interface details (d) centre of gravity etc regarding the power pack in order to achieve complete retrofitment.
(ii) If any upgradation/modification in existing Main Alternator, Traction Motor, Controls, Fuel Oil Delivery System, Lube Oil System, Air Intake System including Turbocharger, Engine Cooling System including Radiator, Compressor, Radiator Fan, Traction Motor Blower, Accessory Drives and/or any other Subassembly of the locomotive is proposed to be carried out by the supplier by means of fresh supplies or otherwise, in order to achieve the complete retrofitment, all such items shall fall within the scope of supply.
(iii) The supplier shall, in order to enable IR for preparing detailed drawings, provide general arrangement drawings for the systems which shall include (a) pneumatic pipings (b) cooling water pipings (c) pipings for lube and fuel oil circuits (d) electrical cabling; within the limitations like weight balancing etc as proposed by IR.
(iv) Adequate documentation, maintenance manuals and tools shall be provided with each power pack by the supplier.
(v) The supplier shall extend necessary support to IR in ensuring continuous availability of spare parts during service life of the power pack. For this, the supplier may also share the part numbers, test specifications, vendors list for sub assemblies etc with IR.
(vi) The supplier shall offer, as a part of supply, all adaptation and accessories parts, in a set against each power pack to be supplied, as required for retrofitment. The supplier shall undertake all the developmental activity related to the product/part/component development required during this whole process of supply, retrofitment and trials etc, and such activities shall fall within the scope of supply.
(vii) The supplier shall supply detailed drawings and specifications of consumables viz filters, oils, seals, gaskets etc and their likely sources.
4. Responsibility of IR: (i) In order to facilitate the successful execution of the activities as intended by
this specification document, IR will make efforts to provide adequate assistance to the power pack supplier which may be regarding permission of access to DLMW; assistance of available drawings, details, updated vendor list etc. The purpose of such access by the supplier to the shop floor area of DLMW shall be limited to the extent of educating/guiding to the personnel of DLMW for carrying out the retrofitment successfully.
(ii) IR will also provide assistance regarding implementation of the upgradations/modifications as suggested and fitment of supplies having been
made against them by the power pack supplier in accordance with the provisions of para 3 above.
5. Requirements:
I. Credentials: The power pack supplier shall have the experience of having manufactured similar power packs in the past and at least 50 power packs, similar to the one proposed to be supplied against this specification, shall have worked in railroad applications with successful performance. II. Feasibility Study and Axle Load Calculations: The power pack shall be adaptable to the locomotive underframe without requiring major changes and shall satisfy the standard schedule of dimensions of Indian railways. The supplier shall carry out feasibility study in this regard. The axle load calculations shall be done by the supplier. III. Compatibility with Electrical Equipments and Drives: It shall be ensured by the supplier that the power pack is compatible with most of the existing equipments viz Traction Alternator, Excitation System, Front Truck Traction Motor Blower Assembly etc and existing drives for Compressor, Radiator Fan, Rear Truck Traction Motor Blower Assembly etc. IV. Underframe: The supplier shall provide detailed data regarding the supplies as mentioned in para 3 above required for modifications to be carried out on the underframe in order to facilitate the retrofitment. It is advised that IR would desire only minor modifications to be carried out on engine Underframe. The modifications will be implemented by IR. The supplier shall provide necessary support for design and design validation of the Underframe (viz FEA etc) if considered necessary, which will be done by RDSO/IR. V. Engine: The power pack offered shall meet the following qualifying criteria: SN Parameter Qualifying criterion 1 Brake Horse Power
under UIC conditions (Minimum)
3300 HP
2 Emission Requirements The exhaust emissions shall meet current UIC 1 emission standards or better. Further, the power pack should be upgradable to UIC 2 emission standards with minimal changes.
3 Brake Specific Fuel Consumption (bsfc)
For meeting the minimum exhaust emissions requirement of UIC 1 the power pack shall be able to demonstrate a bsfc value of 154 ± 2 gm/bhp‐hr or lesser on Engine Test Bed at full load and rated speed under standard UIC conditions as specified in UIC‐623.
4 Lube Oil Consumption Equal to or less than 0.5% of the fuel oil consumption.5 Fuel Injection System Electronic Fuel Injection (EFI) or any other system of
more advanced technology.
6 RPM 900‐1100 7 Maintenance interval
a) Minor Schedules b) Major Maintenance
a) 90 days minimum The Schedule requirement of 90 days minimum shall also apply to:
(i) Top up of the oils/lubricants and attention with respect to the consumables including the filters. (ii) Attention to other components/parts/systems falling within the scope of supply covered in para 3 above.
b) Not less than 24 months
VI. Compatibility of supplies: The offered power pack shall be able to work with the existing diesel fuel oil, lubricating oil, engine coolant, greases and air intake system, currently being used by DMW for ALCO locomotives during Rebuilding, without any deterioration/loss of efficiency or performance. The current grade of fuel oil is Bharat stage II and III as per IS 1460 : 2005 while that of lube oil is multi grade (20W40) engine crank case oil as per IS 13656 : 2002. VII. Cooling system: It should be possible for the proposed power pack to be used with the existing Engine Cooling System including Radiator. However, if any upgradation is required, it should be retrofitable. VIII. Interface Requirements for EFI Equipment: The interfacing of EFI System with the Traction Control Microprocessor System shall be done by the supplier of new power pack. The power pack supplier shall provide the interface requirement of EFI as per AAR Standard S 9356 Class D. The supplier of power pack shall provide necessary assistance to IR or any third party working for IR on EFI system for interfacing the same ie EFI with Microprocessor Control of the Locomotives. The supplier shall supply detailed drawings and material as required for such interface.
IX. Total weight of the locomotive and total axle load: The weight of the power pack shall be such that: (a) the total weight of the locomotive does not exceed 112.8 tonnes and total axle load does not exceed 18.8 tonnes in case of the WDM3A class of locomotive having rated power of 3300 HP which is obtained after Rebuilding, and/or (b) the total weight of the locomotive does not exceed 117.0 tonnes and total axle load does not exceed 19.5 tonnes in case of the existing WDM3D locomotive.
6. Climatic & Environmental Conditions: The power pack shall be able to work satisfactorily in the following environmental conditions: SN Parameter Limits 1 Maximum
Temperature 55 deg C.
(Atmospheric) (However, the air temperature inside the engine compartment may reach up to 70 deg C.)
2 Humidity 100% saturation during rainy season.
3 Maximum Altitude 305 m from MSL.
4 Rainfall Very heavy in certain areas.
5 Atmospheric conditions during hot weather
Extremely dusty and desert terrain in certain areas.
6 Coastal area environ‐
mental conditions
The locomotive and power pack shall be designed to work in coastal areas where the environment is humid and salt laden.
7. Present activities carried out during Rebuilding/Rehabilitation of Locomotive:
The details of major activities undertaken by IR during rebuilding/rehabilitation and upgrading of 2600HP WDM2 loco to 3100HP/3300HP locomotive at DLMW/Patiala is given in Annexure I. The same may be studied by the supplier and ascertain additional inputs it would need to provide for use of proposed power pack.
8. Prove out, End of line Testing and Field Trials:
The testing including prove out and validation shall be carried out in accordance with the Standards UIC 623 as per following scheme:
a. Prove out and validation: One new power pack shall be subjected to the Durability and Performance Test on supplier’s Engine Test Bed as per UIC 623 Standards in presence of IR personnel.
b. End of Line Testing shall be carried out on each power pack at the supplier’s Engine Test Bed in presence of IR personnel.
The engine parameters to be complied with as per UIC conditions and to be shown during above Test Bed trials shall necessarily include but not be limited to the following:
1. Horse power 2. Specific Fuel Consumption 3. Emissions
c. The Field trials shall be carried out on first five locomotives equipped with the new power pack for a period of 6 months of fitment before undertaking the serial supply of balance 45 power packs which shall be undertaken after having experienced the satisfactory performance in field by the first five power packs. The Field trials shall primarily consist of the monitoring of the operational performance of the locomotive in the field. Lube to Fuel Ratio shall be monitored on quarterly basis. Horse Power (HP) and Exhaust Gas Temperature (EGT) shall be measured after 6 months. The values should be within the prescribed limits. Any abnormality/failure observed in the locomotive, which may be directly or indirectly attributable/incidental to the supplies/modifications as contained in para 3 above, shall be thoroughly investigated and rectified by the power pack supplier in the presence of IR’s representative(s). IR
will decide whether, on the basis of such Field trial observations, the supply of balance lot of 45 power packs can be permitted.
9. Service and Spares:
(i) The supplier shall offer necessary support in regard to the supply of spare parts upto the time period of Codal Life of the power pack, or else, shall share with IR the necessary Drawings and the vendor details regarding all the components required as spare parts.
(ii) A list of critical spares along with the unit rate in Indian Rupees required during the service of power pack including all the supplies as per para 3 for a period not less than 3 years prepared on the basis of assessment shall be submitted by the supplier along with the tender offer.
(iii) The supplier shall be willing to enter into Annual Maintenance Contract (AMC) as per requirement of IR. The year wise price rate of AMC in respect of the power pack including all the supplies as per para 3 for a period not less than 3 years shall be submitted by the supplier along with the tender offer. The supplier shall submit detailed scope of work which shall include a list of components/parts/systems to be covered by such an AMC along with the make and unit price.
(iv) The supplier shall make available all the details regarding Maintenance Schedules including required for maintenance of the power pack. The supplier shall also provide the list of components and their unit rate in Indian Rupees which are required to be replaced during such Maintenance Schedules.
(v) IR assumes an expected service life ie the Codal Life of 18 years for the power packs. Such a Codal Life of power pack shall necessarily apply to major components including Engine Block, Crankshaft etc. The supplier shall provide all the field support especially in regard to the corrective and preventive action to be taken during the prove‐out period, field trials and also upto the time period of first Periodic Overhaul (POH) (ie 8 years) of the locomotive equipped with the new power pack. Beyond the first POH period, the supplier shall be willing to support IR personnel and Diesel Sheds in solving the field problems.
10. Identification and Traceability:
The offered power pack and all major components and parts should have proper identification marks and traceability in order to facilitate makewise failure analysis and life cycle data generation.
11. Training:
The supplier shall arrange to provide 2400 man hours of training to IR personnel regarding operation and maintenance of the offered power pack. The training shall be both theoretical and practical. The training shall include but not be limited to the following areas: • Engine Assembly • Engine mounting and alignment on to the locomotive underframe • Engine Testing • Load Box Testing of Locomotive • Maintenance practices with visit to at least one Maintenance Shed • Troubleshooting • Use of special tools and fixtures
12. Warranty: The warranty clause shall apply as per standard IRS conditions.
………
Annexure I
Details of Present activities carried out during Rebuilding/Rehabilitation of Alco Locomotive at DLMW Patiala: The details are as following:
1. Rebuilding of Engine block: Rebuilding of Engine block involves strengthening of engine block for higher power, rectification of Cylinder liner bore, crankshaft bore, camshaft bore and serrations for engine block, main bearing cap etc.
2. Fitment of higher capacity engine base: During rebuilding, the capacity of oil sump is increased to 910 litres. 3. New items used during rebuilding of Power packs: During rebuilding of Power Pack following new sub‐assemblies are used:
a. Crankshaft b. Stiffer Unit camshaft c. Steel cap piston with 3RV liner d. Modified Cylinder Head 251+ e. Turbo support f. High Capacity turbocharger g. Larger after cooler h. Traction Alternator with rectifier i. Micro Controller Based Governor j. FIP 18 mm with Injector k. High capacity lub. Oil pump with modified 63 teeth drive gear l. High capacity water pump with sleeveless design stainless steel shaft and
10” dia. Impeller with modified 42 teeth drive gear.
4. Rectification of Underframe: Rectification of Underframe involves minor modifications at top of the underframe to suit new/modified sub assemblies, cleaning of Fuel tank, rectification of Bumper plates to suit EMD type Pilot and pilot support assembly.
5. Fitment of high speed bogies in Motor Truck Assembly: Rebuilding of Motor truck assembly involves complete rehabilitation of traction motors TM 4907 AZ with fitment of following new sub‐assemblies:
a. High speed Bogie frame b. Axle and Wheel assembly with roller suspension bearing arrangement
6. During Rebuilding, following additional new major sub‐assemblies are provided:
a. Upgraded 3CD Compressor b. IRAB‐1 Air Brake Panel with complete brake system c. EMD type Pilot & Pilot Support assembly d. Main Reservoirs with EMD type auto drain valve e. Short Hood with Roof mounted DBR f. Crew friendly Cab g. FRP Control Desk with LCD display h. Radiators‐High capacity radiators with red brass core tubes. i. Self cleaning Inertial Engine Air filter
j. Lube Oil Filter k. Plate type Lube Oil Cooler l. Streamline Lube oil and water piping m. Complete fuel oil system n. Electronic water level indicator
7. New Electrical sub‐assemblies fitted during Rebuilding:
a. Microprocessor Based AC‐DC Locomotive Control system b. Provision of E‐Beam cables for power and control c. Improved Stick type Master controller d. AC small motors like Dust exhauster blower motor, Crank case exhaust
blower motor, fuel pump motor e. REMMLOT (Remote Monitoring and Management of Locomotives and
trains) f. Self Load Box feature
‐‐‐‐‐‐‐
Report No. MP-MISC - 153
MAIN PARTICULARS OF WDM3D LOCOMOTIVE
GENERAL Cooling system Weight of loco in Working Order (T) 117.0 Water Pump type Centrifugal Adhesive weight in Working Order (T) 117.0 Water pump capacity 2457 l/m at 1050rpm Maximum axle load (T) 19.5 No. of radiator fans One Wheel dia (new) Driving mm. 1092 Fan drive Eddy current clutch Tractive effort (Kg.), Maximum 38610 Fan power 90 HP at 1050 engine rpm Continuous 25950 Water tank capacity 1210 litres Speed (Km/h) Maximum 120 Turbo Supercharger Continuous 26.10 Make and type GE7S1716 Transmission Electric Governor Woodward / EDC
ENGINE Weight of engine (dry) Kg 19026 Make and type DLW 251B (Uprated) TRANSMISSION (ELECTRICAL) No./Loco One Lube oil sump capacity 1270 Litre Alternator Horse power Make and type BHEL TA 10102 EV Standard UIC condition 3300 HP Number per locomotive One Site (47oC – 600m) 3152 Hp Maximum speed 1050 rpm Cylinder formation 45 Degree V type Max. Voltage
Max. current 1100 v 4200 A
Number of cylinders 16 Continuous Rating : Low voltage High voltage
3600 A, 585 V 1938 A, 1075 V
Bore and stroke in mm 228.6 X 266.7 Unit weight with accessories 6400 Kg Compression ratio 12.5 : 1 Traction motor RPM Make and type BHEL TM 5002 BY Rated 1050 Number per locomotive Six Idle 400 Continuous current 925 A Mean piston speed m/sec. 9.33 Continuous voltage 380 V B.M.E.P (Kg/cm2) 15.041 1 Hr. rating current 950 A Injection system Maximum speed 2179 rpm Type Jerk direct Gear ratio 18:65 Type of pump and injector APFICO AKK Suspension Axle hung, nose suspension
Unit weight(with pinion, gear & gear case) 3250 Kg
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Report No. MP-MISC - 153
AUXILIARIES Auxiliary generator Sand Make and type BHEL
AG 3101 AY-1 Number of boxes / Locomotive 4
HP absorbed 17 HP Total capacity 0.16m3
Rating 75V,160A at 950 rpm COMPRESSOR
Unit weight 435 Kg Make KPC/ELGI Exciter Type KCW 623/LG3CDBMake and type BHEL
AG 3101AY HP absorbed 50/52/60KW at 1000 rpm
HP absorbed 30 HP Weight 850Kg Rating 80V,250A at 950rpm Compressor capacity Unit weight 435Kg Free air delivery At 10 Kg/cm2
At Idling (400 rpm) 2266 l/m (KCW 623/LG3CDB)
BATTERIES At 1000 rpm 5665 l/m (KCW623/ LG3CDB)
Make and type EXIDE (Lead Acid 4HMFG 31KP)
TM BLOWER (FRONT)
Number of cells 32 Type Centrifugal multi-vane (DIDW) Voltage 64 Number per locomotive One Capacity 450AH (10Hr) HP absorbed 40 HP Head light 250W, 32V Weight 80kg (without motor)
BRAKES TM BLOWER (REAR) Locomotive Air, hand, BHEL make dynamic
brake. Type Centrifugal multi-vane (SWSI)
Train Pure air brake system. Number per locomotive One System Panel mounted IRAB-I. HP absorbed 34 HP
CONTROL SUPPLIES Weight 105kg (without motor) Fuel tank ( detachable) Number per locomotive One Total capacity 6000 litres
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