annexure-a

SALIENT TECHNICAL FEATURES

PLANT OVERVIEW:

NTPC Talcher Kaniha (TSTPS) plant is located in Kaniha Block under Talcher sub-division of Angul district, in the state of Orissa.

Nearest Town                          :           Talcher  26Kms.

Nearest Railway Station           :           Talcher 29 Kms.

Nearest Airport                                    :           Bhubaneswar 180 Kms.

INSTALLED CAPACITY

STAGE-I -  2 UNITS EACH 500MW-  TOTAL  -1000 MW

STAGE-II-  4 UNITS EACH 500 MW - TOTAL-2000 MW

EQUIPMENTS INVOLVED IN THE CONTRACT

Stage- I & II MGR SYSTEM UNITS:- 6 X 500 MW

Brief Technical Specifications for Rapid Discharge BOBRNHSM-1 Wagons.

1. Track gauge: 1676 mm

1. Pay load(with 250mm heap) : 63.67  MT

1. Axle load : 22.32 MT

1. Tare load(Estimated) : 25.61 MT

1. Gross weight : 89.28 MT

1. Volumetric capacity of the wagon: Volumetric capacity of the wagon shall be sufficient to accommodate 63.67 MT of coal having bulk density of 0.80 tones/m3 with 250mm of leveled heap.

1. No. of doors/gates: 2nos (04 flaps/gates) door way opening area: 30 % (minimum) 40% (desirable) of top area.

1. Door mechanism : Electro pneumatic operated door mechanism (RDSO design)

1. Door operating pneumatic pressure : 6.2 bar

1. Brakes: Single pipe graduated release automatic air brakes with minimum 32mm NB pipe with automatic load sense device conforming to  the technical requirements laid down in RDSO drawing no:02-ABR-2004(with latest amendments) & pipe & joints to RDSO STR no:-04-ABR-2004( with latest amendments)

1. Bogie: 2-axle cast steel CASNUB-22HS type bogie (Bogie drawing no:-WD-92058-S/3) fitted with spring plank long travel helical springs & load proportional "Friction damping arrangements as per RDSO spec. no:- WD-17-CASNUB-22HS-Bogie-92 (latest amendments).The bogie shall be suitable for fitment of standard wheel sets as per RDSO drawing no:-WD-89025-S/1, wheel to drawing no:-W/WL-4764, Axles to drawing no:-WD-89025-S/2, Cartridge bearing to drawing no:-AR/RB-39-2002 (with latest amendments). Elastomeric pads to STR no: 20-Misc.-95 (with latest amendments) & Polymer Pads side bearers to drawing no: WD-38-Misc-2004. Bogie shall have wheel base of 2000mm & nominal wheel diameter of 1000mm.

1. Coupler and Draft gear: The wagon shall be fitted with High tensile non-transition type centre buffer coupler as per RDSO spec. no:-48-BD-02 (with latest amendments) & high capacity draft gear to RDSO spec. no:-49-BD-04 (with latest amendments).

12. Construction: All welded.

13. Operating speed:   65 kmph (normal) & 100 kmph (maximum)

1. Energizing voltage for door operation: 24/32 V DC positive polarity.

15. Major dimensions:

i)   Length over head stocks                : 9671mm

ii)  Length over couplings                               : 10600mm

iii) Bogie centers                                             : 6790mm

iv) Maximum width                            : 3500 mm

v)  Maximum Height                           : 3735mm + 250mm(coal heap)

vi) Wheel diameter                             : 1000 mm

16. Axle Bearings: 6"x11" AAR approved cartridge tapper roller type with narrow jaw adopter.

17. Door operating mechanism components:

i) Air cylinder: Make- RDSO approved.

ii) Pneumatic control valve assembly: Double solenoid super spool valve. (Make-Miner / Rexroth, USA)

18. Air Reservoir: RDSO approved make suitable for one opening & one closing cycle with the locomotive disconnected and shall be minimum 135 liters.

19. Brake Blocks: Asbestos free L-type composite Brake Blocks, (Make: RDSO approved vendors)

20. Brake Beams: Cast type.

21. Drawings:-

The drawings listed below along with the specification shall supplement the equipment specification:-

Description                                                      Drawings no.

1.         Bogie hopper wagon diagram:           Design-J in RDSO index drawing no:

                                                                     WD-91071-S-50 (latest rev.) for variant 

                                                                  BOBRNHSM1 (BMBS)

The wagons will be Indian Railway Broad Gauge (BG) 89.28 MT gross & 63.67 MT payload bottom discharge Bogie Hopper Wagons. These wagons will be fitted with Electro-pneumatically operated doors operating mechanism suitable for automatic operation.

For further details please refer to Volume-B of the Tender documents.

JOBS IN BRIEF

The scope of equipment to be furnished and services to be provided under the contract are outlined herein after and same is to be read in conjunction with the provisions contained in other volumes. The scope of the contract shall be deemed to include all such items which although are not specifically mentioned in the bid documents and/or in Bidder's proposal, but are required to make the system complete in all aspects for its safe, efficient, reliable and trouble free operation unless the same are specifically excluded from Bidder's scope of work. The equipment included in this volume covers "Turnkey responsibility" for following equipment and services: -

i) 115 Numbers (including prototype wagon) bottom discharge hopper wagons type BOBRNHSM1 (BMBS) with CASNUB-22HS bogies for operation on 1676 mm gauge. These wagons shall be fitted with pneumatically operated door operating mechanism. Bidder to comply with latest revision of RDSO's "PARTICULAR SPECIFICATION FOR BOGIE OPEN RAPID DISCHARGE HOPPER WAGON" document no. WD-13-BOBRN-2011 and Design-J in RDSO INDEX Drawing no. WD-91071-S-50 (latest revision) for variant BOBRNHSM1 (BMBS).

ii) Bidder should purchase the latest revision of the specification and drawings indicated at (i) above from RDSO and familiarize himself with the requirement of RDSO's specification and drawings before offering his bid.

iii) Mandatory Spares: As per list enclosed at Annexure - IV to SubSection-G0.

Above Mandatory Spares may be reduced at the discretion of the

Employer at the time of placement of order.

In addition to RDSO technical specification requirement regarding 'AS MADE' drawings, Bidder should:

iv) Supply Instruction / maintenance manuals (12 sets).

v) Supply "As made" drawings in CD and Eight (8) sets of prints.

The "Turnkey responsibility" shall include basic engineering, detailed design, manufacture, transport, testing and commissioning of the equipment in accordance with the requirements of the specification. All applicable statutory clearances (e.g. movement clearances/ speed certificate etc.), approval of necessary drawings/ documents (including payment of design loan charges), inspection, testing as per RDSO specifications/Drawings/documents and as required by IR/RDSO, is in the Bidder's scope and shall be obtained by the Bidder at his own cost.