Laying of MS Pipe Conduit over a stretch of the cable trench around 10M long constructed on front side of 2x2.5MVA, 33/11KV SubStation for providing easy access to trailer and hydra crane during loading and unloading of power transformers of Tangnar

Amount

Shifting of 20M, 300mm Diameter and 20M, 450mm Diameter MS Pipes belonging to JS PHE GWD Srinagar from WSS Pokhribal to WSS Tangnar by way of hiring a hydra crane, diesel truck and labour for handling of pipe material during loading, shifting and unloading at site.

Temporarily removing all the power and control cables laid through the subject cable trench including decommissioning of 4.00MVA power transformer, by way of disconnecting the power and control cables from the respective LT, HT and control circuits from the buck boost unit, step down transformer and regulator unit of both 2.5 MVA, 33KV AVR units. Besides 11KV power cables connected between secondary of both power transformers and 11KV switchgear panels also need to be removed along with control cables of 33KV VCB and transformer marshalling box. While disconnecting the cables, it has to be ensured that all these are ferruled or numbered, in a way so that least possible time is consumed while reconnecting these after laying through the pipe conduit. After laying of above MS pipes, the HT, LT and control cables are to be re-laid by designating each pipe conduit for LT, HT and control cables originating from AVR yard and likewise for cables originating from sub-station. Further all these cables shall again be connected with the respective circuits. On doing so all the equipment shall again be tested and commissioned on full load. For this purpose all the requisite testing equipments etc. and services of expert electrical / service engineer along with two No (02) of Sr. Technicians and three job knowing helpers (03) are to be arranged by the firm for ensuring the system is installed to its original state.

Laying in two runs the above shifted MS Pipe over an existing brick masonry cable trench, by placing the 300mm diameter pipe first inside the trench and then laying the 450mm diameter MS pipe over this pipe. The job includes cutting welding etc. of the MS pipe as per the requirement at site and arrangement of hydra crane, tools tackle, oxy acetylene gas torch, welding set etc. Cutting of pipe is required to enable laying of power and control cables in the existing corridor, so that no shortage of cable length takes place. Welding of pipes will ensure that the conduit is not displaced due to movement of hydra crane, trailer etc during loading and unloading of power transformer.

a) Centering and shuttering including propping etc. and removal of form for laying of mass concrete. (2 X 34.5' X 2') + (2 X 2' X 1')= 142 Sft /10.75 = 13.21 Sqm

b) Providing of Sand Cushioning by way of supplying and filling in plinth with fine sand under floors including, watering, ramming, consolidating and dressing complete. (34.5' X 9' X0.5') + (34.5' X 2' X 1')= 224.25 CuF/35.29 = 6.35 Cum

c) Supplying, filling, spreading and leveling stone soling of size range 5 cm to 10cm thickness for all leads and lifts all complete as per direction of Engineer-in-charge. (34.5' X 9' X0.5') CuF/35.29 =4.40 Cum

d) Providing / laying of cement concrete in 1:2:4 mix complete in all respects as per specifications and directions of site in charge The job includes of having 300 mm X 300 Mm openings at appropriate places for accommodating output cables of the respective transformers (Any other work incidental to complete the work shall not be paid extra). (34.5' x 2' x 1') + (34.5' x 9' x 1') = 379.5 CuF /35.29 =`10.75Cum

Loading, shifting and unloading of 4 MVA Power Transformer: Loading of 4.00MVA power transformer at WSS Tangnar from transformer bed to the Platform along with all allied accessories by engaging hydraulic crane of 20T on hire basis. Transportation of above Power Transformer along with all allied accessories in 9 Ton Diesel Truck/Trailer from WSS Tangnar to PDD Store Bemina. Unloading of power transformer at PDD Store Bemina from platform/truck on to transformer bed by again engaging hydraulic crane. The job involves hiring of 02 labourers for handling of equipment and keeping a look out for signaling the crane operator for any obstruction or damage to equipment. (01 hours at WSS Tangnar, 02 hours on a/c of traveling including traffic restrictions, 02 hours at PDD Receiving Station Bemina)

M/S BHAT ENTERPRISES