Signaling work in connection with provision of MSDAC except supply, installation and commissioning of MSDAC in conjunction with existing track circuit for improving reliability of track in water logging areas over Delhi Division

Supply and installation of 24-40V/5A DC-DC convertor module suitable for IPS systems as per instruction of Site Incharge and RDSO spec No.RDSO/ SPN/ 165/ 2012 ver.3.0 or latest. (Inspection: Supply- RDSO, Installation- Site Incharge)

Supply, Installation& Commissioning of maintenance free earth suitable kit as per RDSO Specification no. RDSO/SPN/197/2008 and Drg No. SDO/./E&B/001 dated: - 19.09.2008 and Drg No. RDSO/SDO/./E&B/002 dated:- 19.09.2008. Earthing kit consisting of earthing electrode of 17mm dia as 3m long -01 no 2 MEEB (300mmx25mmx6mm) -o1 no. 3. SEEB (150mmx25mmx6mm) -01 no 4. Earth enhancing compound - 30 kg (minimum). This includes: - Provision of earth connection from MEEB to S&T equipment i.e. cable sheath, apparatus case, BPAC, Axle counter, IPS, Data Logger etc. with PVC earth wire of size 25/35 sq.mm through copper lugs of suitable size PVC earth wire shall be supplied by contractor. Note: At certain locations, it may not be possible to achieve earth resistance of less than 1.0 ohm with one earth electrode /pit due to soil resistivity. In such cases, provision of loop earth consisting of more than one earth pit shall be done, for interconnection of two earth pits copper tape of size 25x2 sq.mm shall be provided by the contractor. The No's of pits required shall be decided based on the resistance achieved for the earth pits already installed. The procedure mentioned above for one earth pit shall be repeated for other earth pits. The other earth so installed for the purpose of loop earthing arrangement shall be counted as seperate earth. Inspection : RDSO"

Supply and installation of earth electrodes as per std. practice. The item includes digging of pit in earth, 3 Mtrs. deep and fixing earth electrode pipe. Casting of cement concrete enclosures as per drg. No. (NR/S&T/CON/6.4/97). The soil treatment shall be done as per std. practice. The item includes provn. of mild steel flat of size 35mm x 6mm (as per IRSEM) and nut bolted connection of MS flat with earth electrode. The other end of mild steel flat to be connected to block instrument, cable sheath of power equipment, signal base, apparatus case, CT rack / relay racks, other equipment's as per the instruction of Engr. at site& IRSEM. Earthing connection location to location shall be done through cable which shall be provided by Railway. Complete materials such as earth electrodes as per drg. No. ( NR/S&T/CON/6. 3/97), cement, wiring material, nut bolt for connection & mild steel flat of size 35mm x 6mm or 210 sqm as per SEM etc. to be supplied by the contractor. Inspection : Consignee

Fabrication, supply and fixing of relay racks of size 2200mmx690mm (as per approved Drg. No. NR/S&T/CON/4-3/97A) made of angle iron size 45mmx45mmx6mm along with outer frame made of angle iron size 65mmx65mmx8mm, fitted with M.S. squares bars duly galvanised, descriptions strips to accommodate Plug-in-type relays/groups/Point contractor units/ECRs/HMUs. All fixing material like antilting device, hylam sheets if required, bolts & nuts, washers, insulators, shoe, angle irons, flats, L- bolts, Catenary wires and cement concrete etc. will be supplied by the contractor. This includes cleaning, priming by red oxide, painting & description etc. with ISI mark paints. Inspection :Consignee for supply , Site Engineer for installation.

Fabrication, supply and fixing of cable termination board of size 2200mmx900mm as per Drg. No. NR/S&T/CON/4-1/97A made of angel iron size 40mmx40mmx5mm alongwith outer frame made of angle iron size 65mmx65mmx8mm duly fitted with Bakelite sheet (HYLAM MAKE or similar ) of size 6mm thick. This also includes fixing of ARA terminals/strips/Wago connectors & fuse bases etc. Supply and fixing of hard wood of size 70cmx25cmx4cm in the back at bottom for jamming of armour of cables, each cable in the hole drilled separately for each cable through the salwood plank and all cable entry points on location boxes, location huts, JBs relay room/battery room to be closed with suitable masonry Works covered with sand and plastering. All the fixing materials like bolts, nuts, washers, Insulators, shoe, angle irons, flats, L- bolts, Catenary wires & cement concretes etc. will be supplied by the contractor. This includes cleaning, priming by red oxide, painting & description etc. with ISI mark paints. Inspection :Consignee for supply , Site Engineer for installation.

Supply & Installation of Thermo shrink jointing kit for 6-Quad/4-Quad cable for straight through joints as per specifications, drawings and stipulations of tender documents and as per approved cable route plan at various locations. Jointing kits to be supplied as per RDSO specification IRS:TC 77-2012 (Rev.-3) or latest amendments. Inspection : Consignee.

Supply of single app.case steel RE with 'E' type lock and key ward no.42 and handle as per drg. No. RE/S&T/ALD/SK/219/82 with (Alt A) and 221/82 with Alt.B. Inspection :RITES

Casting, concreting and curing of foundation and erection of single app.cases of size (1160mmx760mm) at surface and 650mm deep as per approved Drg.No.NR/S&T/CON/2-7/97. A layer of 3 mm of bitumen compound has to be provided between foundation and location box to prevent ingress of water in the base of location box . All material such as cement, coarse sand, aggregate and anchor bolt shall be supplied by contractor. App.Case single will be supplied by Railway. Contractor is required to execute all type of repair Works of foundations if required during inserting the cable for termination. Inspection: Site Engineer.

Preparation of App. Case single involving wiring of relays. Preparation & fixing of bakelitehylum sheet 910x800x6mm and backelite shelf 900x450x10mm duly fixed by angle iron piece of different size inside all the app. Cases. Hylum board shall be fixed on an angle iron frame of 25mmx25mmx3mm. Angle iron frame will be fixed in location boxes secured by nuts and bolts. This includes fixing of fuses, ARA terminal, Q series relays and other type relays on square bars fixing and jamming of cables with 2 inch thicksalwood plank provided at the bottom. This will include opening, pasting and jamming armour of each cable in the hole drilled separately for each cable through the salwood plank and all cable entry points on location boxes, location huts, JBs relay room/battery room to be closed with suitable masonry Works covered with sand and plastering. Wiring description for terminal drawing of circuits, inside app. Case. Painting from outside as well inside with red oxide and aluminum paint is covered separately. Size of lettering will be 100mm or as per instructions of Engineer at site. All materials including Backelite shelf, hylum board, salwood plank, angle iron square bar, wire and wiring material as per the IRS specn., non-deteriorating type HRC fuses with bases, catenary wires, nuts and bolts and other items shall be supplied by the contractor. Relays, ARA terminals only shall be supplied by the Railways. Inspection: Site Engineer.

Preparation of App. Case single not involving wiring of relays. Preparation & fixing of bakelitehylum sheet 910x800x6mm and Backelite shelf 900x450x10mm duly fixed by angle iron piece of different size inside all the app. Cases. Hylum board shall be fixed on an angle iron frame of 25mmx25mmx3mm. Angle iron frame will be fixed in location boxes secured by nuts and bolts. This includes fixing of fuses, ARA terminal and fixing and jamming of cables with 2-inch thick salwood plank provided at the bottom. This will include opening, pasting and jamming armour of each cable in the hole drilled separately for each cable through the salwood plank and all cable entry points on location boxes, location huts, JBs relay room/battery room to be closed with suitable masonry Works covered with sand and plastering. Wiring description for terminal drawing of circuits, inside app. Case. Painting from outside as well inside with red oxide and aluminum paint is covered separately. Size of lettering will be 100mm or as per instructions of Engineer at site. All materials including Backelite shelf, hylum board, salwood plank, angle iron square bar, wire and wiring material as per the IRS specn., non-deteriorating type HRC fuses with bases, catenary wires, nuts and bolts and other items shall be supplied by the contractor. ARA terminals only shall be supplied by the Railways. Inspection: Site Engineer.