AUGMENTATION OF HT OH LINE BY CONVERSION INTO HT UG CABLE WITH CONNECTED ITEMS OF WORK UNDER GE GURDASPUR (TIBRI)

Amount

Note: Please refer Schedule 'A' Notes given on serial page No. 16(R), 17(R), & 18 of tender documents.

EXTERNAL ELECTRIFICATION SUPPLY WORKS :-

Supply, laying, jointing and testing underground XLPE insulated and PVC sheathed HT 11000 volts grade (E) (heavy duty) stranded aluminium conductor of size 95 Sqmm 3 core laid up with innersheath of PVC having over all PVC sheathed provided with galvanised steel flat strip armoured, conforming to IS-7098 (Part-II) 1985 with the latest amendments laid in trenches, in floor, in duct, through pipes or along the pole complete all as specified. Note: (i) Excavation, Earthwork and sand cushioning, PCC protection cover, GI pipe and protection clamps shall be measured and paid for separately. (ii) High voltage test to be carried out after laying and jointing of cables. All arrangement for the same shall be provided by the contractor & shall be considered within quoted rates. (iii) Pre-dispatch factory inspection of HT cables shall be done by the representative of Accepting Officer. All the arrangements of factory inspection shall be made by the contractor and expenses on this account is deemed to be included in the quoted rates against the item.

All as per description of ser item No. 3.00 here-in-before but cable size 120Sqmm 3 core complete all as specified.

All as per description of ser item No. 3.00 here-in-before but cable size 185 Sqmm 3 core complete all as specified.

Excavation in trenches not exceeding 1.5 metre wide and not exceeding 1.5 metre in depth for laying cables/ GI/DIpipes and getting outin soft/loose soil including trimming the sides of trenches complete all as specified.

Excavation in trenches not exceeding 1.5 metre wide and exceeding 1.5metre in depth but not exceed 3.00metre in depth for laying cables/ GI/DIpipes and getting outin soft/loose soil including trimming the sides of trenches complete all as specified.

Returning, filling in, spreading, levelling, watering and well ramming in layers not exceeding 25cm thick each layer complete all as specified.

Removal of excavated spoil to a distance not exc. 50m and depositing where directed at a level not exc. 1.5m above the starting point complete all as specified.

Supply and fixing un-reinforced precast concrete cable covers, ISI marked, class HV, type 1, flat size 300 mm x 180 mm x 40 mm laid flat in trenches over the cable with the length of slab laid perpendicular to the direction of the cable length adjacent/ abutting each other complete all as specified. (for HT cable)

Material and labour sand cushioning for under ground cable with a layer of sand of 8 cm thick before laying of cable and 15 cm thick after laying the cable (total 23cm ) to full width of trench complete all as specified. Note:-The punned thickness shall be measured for payment purpose.

Supply, jointing and testing cable jointing kit suitable for 11 KV (E) grade cable for indoor type termination cold shrinkable joint complete with jointing material and accessories suitable for XLPE armoured aluminium cable of size 120 to 185 sqmm 3 core complete all as specified.

Supply, jointing and testing cable jointing kit suitable for 11 KV (E) grade cable for outdoor type termination cold shrinkable joint complete with jointing material and accessories suitable for XLPE armoured aluminium cable of size 120 to 185 sqmm 3 core complete all as specified.

Supply, jointing and testing cable jointing kit suitable for 11 KV (E) grade cable for outdoor type termination cold shrinkable joint complete with jointing material and accessories suitable for XLPE armoured aluminium cable of size 95 sqmm 3 core complete all as specified.

Supply, jointing and testing cable jointing kit suitable for 11 KV (E) grade cable for straight through cold shrinkable type joint complete with jointing material and accessories suitable for XLPE armoured aluminium cable of size 95 sqmm 3 core complete all as specified.

Supply, jointing and testing cable jointing kit suitable for 11 KV (E) grade cable for straight through cold shrinkable type joint complete with jointing material and accessories suitable for XLPE armoured aluminium cable of size 120 to 185 sqmm 3 core complete all as specified.

Supply, installation, connecting, testing and commissioning outdoor type 11 KV, 630 Amps, Extensible Outdoor Fixed Type (IP54), RMU (Ring main unit) 3-way comprising of 2 Nos 630 Amps, manually operated Load Break Switch (Comprising Two Nos. Incomers) & 1 No. 630 Amps capacity motor operated SF-6 insulated Vacuum Circuit Breaker as Outgoing, inside robotically/manually/TIG welded stainless steel 304 (Non Ferrite Non Megnetic Grade) filled with SF6 gas at suitable pressure in accordance with the IEC 60298. tank having min. thickness 2.5+0.5 mm having IP 67 Degree of Protection. RMU should be provided with internal busbars, as well as earthing busbars should be of copper, padlock provisions & complete with all accessories. The RMU shall be type tested for Internal arc test of not less than 21KA/1 sec as per IEC62271-200. RMU shall be equipped with site replaceable bushing. The earthing busbar shall be provided inside each cable compartment for solid earthing of Cable sheilds. The outer enclosure main door should cover entire part of the switchgear including front cover and cable doors for providing complete IP 54 protection including raised foundation of suitable size, minimum 50 cm above and 01 meter below the natural ground levels all as per manufacture's drawing. The unit shall include the following with all necessary standard fitting as required at site. (a) 2 Nos. Incoming Load Break Switch module should consist of following accessories : 630A Load Break Switch module for making and breaking of fault current alongwith, Earth Switch of full making capacity, Short time current - not less than not less than 21KA/ 1 sec, Making Capacity - 50KA, Auxiliary contacts - 1NO + 1NC, Power frequency withstand voltage - 28KV, Impulse withstand voltage - 75KV, Nominal operating gas pressure - 1.3 (Minimum) Bar abs, Front cover mechanism - IP2X, Cable covers - 3X, Snap action mechanism for manual operation, Cable box for front termination of the cable suitable upto 3 core 400 Sqmm, 11 KV XLPE cable, Right angle boots (push on type), Suitable site replaceable Cable bushings, Arc proof cable covers with self Interlocking mechanism with earth switch, Capacitive voltage indication fixed type system as per IEC61243,Ronis Key Interlock between both Incomers

(i) -Impulse withstand voltage-75kVP (an altitude<1000 m above msl) (ii) -SF6 Gas pressure indicator (iii) -230V AC shunt Trip coil for external trip signal (iv) - Live cable indicating LEDs energised through capacitive voltage dividers. (v) -All feeders of RMU shall be provided with multifunction meters having complete range of measurement including maximum demand and shall have serial port for communication. (vi) Metering compartment of RMU shall be provided with auxiliary transformer of suitable capacity to supply power to batterry charger. (vii) Integral earthing switch with making switch. (viii) Emergency Trip Push Button. (ix) Transformer card for auxiliary protection. (x) RMU shall be provided with 3 core metering and protection CTs minimum ratio for protection CTs shall be 400-200-100/5/1, 5P10, 2.5 VA and and for metering CT shall be 200/5/1A Class 1, 2.5 VA. (b) Outgoing Breaker module should consist of following accessories: (i) 630A Vaccum Circuit Breaker module for making and breaking of fault current alongwith Earth Switch of full making capacity. VCB should be capabl to bear 40 dead short circuit operation-02 Nos. (ii) Short time current - not less than 21KA/ 1 sec (iii) Making Capacity - 50KA (iv) Auxiliary contacts - 1NO + 1NC (v) Power frequency withstand voltage - 28KV (vi) Impulse withstand voltage - 75KV (vii) Nominal operating gas pressure - 1.3(minimum) Bar abs. (viii) Front cover mechanism - IP2X (ix) Cable covers - 3X (x) Stored Enegry mechanism for Motor operation- 24VDC (xi) Cable box for front termination of the cable suitable upto 3 core 400 Sqmm, 11 KV XLPE cable

(xii) Right angle boots (push on type) (xiii) Self Powered Microprocessor based Relay (3 O/C & E/F) with standard settings (xiv) Digital Multifunction meter (A, V, KW, KVA, F, PF) with RS 485 port type Rishabh/ L&T/ C&S (xv) Suitable site replaceable Cable bushings (xvi) Arc proof cable covers with self Interlocking mechanism between doors, earth switch, disconnector & VCB (xvii) Capacitive voltage indication fixed type system (xviii) Mechanical Indications for breaker ON, OFF, EARTH, TRIP, Spring Charged-Discharged (c ) Bus Connected PT Unit -1 No. for Metering consisting of following:- (i) Type M: Air Insulated metering module 12KV, 630A, not less than 21KA for 1 sec. - 3 Voltage Transformers of the ratio 11kV/√3 / 110 V/√3, 50 VA, Class 1.0 with HT fuses on primary side and MCB on secondary side. (ii) -Microprocessor based IDMT (50, 50N, 51, 51N) relay for overcurrent, short circuit and earth fault protection. (iii) - 1 CFL Illumination. (iv) - 1 Space Heater with thermostat. (v) - Each RYB phase indications for 2 incoming and 1 out going. (vi) - 1 Cable support bus bars, standard for 3 way unit. (vii)- 1 set Bushings for external busbar connection along with Busbar cover & Sleeved busbars for coupling. (viii) - 2x12 V Battery with battery charger with suitable burden for motor operation. Input 230 V AC & Output 24 V DC. (d) Capacitive voltage indication fixed type VPIS 9-15 KV (e) Necessay interlocking arrangement for safety and operations (f) One No. Operationg Handle for Manual Operation. (g) One No. Manometer.

(h) Safety Interlocks Shall be provided as per relevant IEC/IS Standards and Manufacturers directions. (j) Above switchgear shall confirm to all relevant IEC/IS Standards. (k) Manual operation of Vacuum Circuit Breaker should be possible without dismantling the motor from RMU. The motor should be fitted in such a way that it should not be outside front covers of RMU. (l) Coupling of RMU and Metering module should be with the help of Bolted type arrangement, so that the coupling at site shall be easy. Plug-in type bushing shall not be acceptable. (m) All cable bushing should be replaceable type. (n) Module should be accommodated as per manufacture's design. (o) RMU cable box shall be front accesible type to have easy access to protection and metering CTs. Vaccum Interupter should be of same make. Cable box should be arc proof with bolted door and interlocked with respective earthing switchs. Doors should be removable for the ease aceess to terminate cables. Note : The contractor will submit NABL accredited lab test reports of the RMU's in original and the same shall be produced well before claiming RAR payment of the RMU.

Supply, installation, connecting, testing and commissioning out door type 11 KV, 630 Amps, Extensible Outdoor Fixed Type (IP54), RMU (Ring main unit) 5-way with Bus metering Unit comprising of 2 No's 630 Amps, manually operated Load Break Switch (Comprising Two Nos. Incomers) & 2 No's 630Amps capacity motor operated SF6 insulated Vacuum Circuit Breaker as Outgoing and 1 No. bus sectionalizer consist of manually operated Load break switch. All LBS, VCB and Bus Sectionalizer shall be enclosed inside robotically /manually/TIG welded stainless steel 304 (Non Ferrite Non Megnetic Grade) filled with SF6 gas at suitable pressure in accordance with the IEC 60298. tank having min. thickness 2.5+0.5 mm having IP 67 Degree of Protection. RMU should be provided with internal busbars, as well as earthing busbars should be of copper, padlock provisions & complete with all accessories. The RMU shall be type tested for Internal arc test of not less than 21KA/1 sec as per IEC62271-200. RMU shall be equipped with site replacable bushing. The earthing busbar shall be provided inside each cable compartment for soilid earthing of Cable sheilds. The outer enclosure main door should cover entire part of the switchgear including front cover and cable doors for providing complete IP 54 protection including raised foundation of suitable size, minimum 50 cm above and 01 meter below the natural ground levels and all as per manufacur's drawing. The unit shall include the following with all necessary standard fitting as required at site. (a) 2 Nos. Incoming Load Break Switch module should consist of following accessories : (i)630A Load Break Switch module for making and breaking of fault current alongwith Earth (ii)Swicth of full making capacity (iii)Short time current - not less than 21KA/ 1 sec (iv)Making Capacity - 50KA (v)Auxiliary contacts - 1NO + 1NC (vi)Power frequency withstand voltage - 28KV (vii)Impulse withstand voltage - 75KV (viii)Nominal operating gas pressure - 1.3 (minimum) Bar abs. (ix)Front cover mechanism - IP2X (x)Cable covers - 3X

(b) Snap action mechanism for manual operation Cable box for front termination of the cable suitable upto 3 core 400 Sqmm, 11 KV XLPE cable, Right angle boots (push on type) Suitable site replaceable Cable bushings. Arc proof cable covers with self Interlocking mechanism with earth switch Capacitive voltage indication fixed type system as per IEC61243 (i) -Impulse withstand voltage- 75kVP (an altitude<1000 m above msl) (ii) -SF6 Gas pressure indicator (iii)-230V AC shunt Trip coil for external trip signal (vi)- Live cable indicating LEDs energised through capacitive voltage dividers.

(v) All feeders of RMU shall be provided with multifunction meters having complete range of measurement including maximum demand and shall have serial port for communication. (vi) Metering compartment of RMU shall be provided with auxiliary transformer of suitable capacity to supply power to batterry charger. (vii) Integral earthing switch with making switch. (viii) Emergency Trip Push Button. (ix) Transformer card for auxiliary protection. (x) RMU shall be provided with 3 core metering and protection CTs minimum ratio for protection CTs shall be 400-200-100/5/1, 5P10, 2.5 VA and and for metering CT shall be 200/5/1A Class 1, 2.5 VA. (c) 1 No. busbar sectionalizer module should consist of following accessories : Sectionalizer load break switch 12kV, 630A Snap action mechanism for manual operation (d ) Outgoing Breaker module should consist of following accessories: (i) 630A Vaccum Circuit Breaker module for making and breaking of fault current alongwith Earth Swicth of full making capacity. VCB should be capabl to clear 40 dead short circuit operation. (ii) Short time current - not less than 21KA/ 1 sec (iii) Making Capacity - 50KA (iv) Auxiliary contacts - 1NO + 1NC (v) Power frequency withstand voltage - 28KV (vi) Impulse withstand voltage - 75KV (vii) Nominal operating gas pressure - 1.3 (minimum) Bar abs. (viii) Front cover mechanism - IP2X (ix) Cable covers - 3X (x) Stored Enegry mechanism for Motor operation- 24VDC (xi) Cable box for front termination of the cable suitable upto 3 core 400 Sqmm, 11 KV XLPE cable (xii) Right angle boots (push on type)

(xiii) Self Powered Microprocessor based Relay (3 O/C & E/F) with standard settings (xiv) Digital Multifunction meter (A, V, KW, KVA, F, PF) with RS 485 port type Rishabh/ L&T/C&S (xv) Suitable site replaceable Cable bushings (xvi) Arc proof cable covers with self Interlocking mechanism between doors, earth switch, disconnector & VCB (xvii) Capacitive voltage indication fixed type system (xviii) Mechanical Indications for breaker ON, OFF, EARTH, TRIP, Spring Charged-Discharged

(e) Bus Connected PT Unit -2 No. for Metering (1 No. Metering module for each breaker) consisting of following:- Type M: Air Insulated metering module 12KV, 630A, not less than 21KA for 1 sec. (i) - 3 Voltage Transformers of the ratio 11kV/√3 / 110 V/√3, 50 VA, Class 1.0 with HT fuses on primary side and MCB on secondary side. (ii) -Microprocessor based IDMT(50, 50N, 51, 51N) relay for overcurrent, short circuit and earth fault protection. (iii) - 1 CFL Illumination. (iv) - 2 Space Heater with thermostat. (v) - Each RYB phase indications for 2 incomers and 2 out going. (vi)- 1 Cable support bus bars, standard for 5 way unit, (vii)- 1 set Bushings for external busbar connection along with Busbar cover & Sleeved busbars for coupling. (viii) - 2X12 V Battery with battery charger with suitable burden for motor operation. Input 230 V AC & Output 24 V DC. (f) Capacitive voltage indication fixed type VPIS 9-15 kV (g) Necessay interlocking arrangement for safety and operations (h) One No. Operationg Handle for Manual Operation. (j) One No. Manometer. (k) Safety Interlocks Shall be provided as per relevant IEC/IS Standards and Manufacturers directions. (l) Above switchgear shall confirm to all relevant IEC/IS Standards. (m) Manual operation of Vacuum Circuit Breaker should be possible without dismantling the motor from RMU. The motor should be fitted in such a way that it should not be outside front covers of RMU. (n) Coupling of RMU and Metering module should be with the help of Bolted type arrangement, so that the coupling at site shall be easy. Plug-in type bushing shall not be acceptable. (o) All Cable bushing should be replaceable type. (p) Module should accommodate as per manufacture's design.

(p) RMU cable box shall be front accesible type to have easy access to protection and metering CTs. Vaccum Interupter should be of same make. Cable box should be arc proof with bolted door and interlocked with respective earthing switchs. Doors should be removable for the ease aceess to terminate cables. Note : (Item No 17 & 18) :- (i) The contractor will be submitted the NABL accredited lab test reports of the RMU's in original and the same shall be produced well before claiming RAR payment of the RMU. (ii) Pre-despatch inspection shall be carried out by Rep of Accepting Officer.All arrangement for the same shall be arranged by the contractor & shall be considered within quoted rates

M&L for earthing complete using galvanised steel earth plate electrode 60cm x 60cm x 6mm thick burried directly in ground vertically at a depth not less than 2.25 metres deep below normal ground level with top edge of the earth plate at a depth not less than 1.5 mtr below normal ground level connected with and including GI stips 32mm x 6mm in and including GI pipe 50mm bore medium grade as protection pipe (from top of earth plate upto the body of equipment) by means of GI bolts, nuts, check nuts, GI washers, timbles; earth plate surrounded by packed layers of charcoal dust and common salt 15cm thick all around including top and bottom and watering pipe 20mm bore of GI pipe light grade with funnel and wire mesh PCC chamber of size 300mm x 300mm x 300mm (top of chamber minimum 15cm above the normal ground level (1:3:6) using 20mm graded stone aggregate and RCC cover (1:2:4) type B-1 using 20mm graded crushed stone aggregate and angle iron frame including necessary excavation/ earthwork in any type of soil/ rock and as shown in electrical plate No. 3 of SSR part-I (2009) testing on completion complete all as specified with the following :- (i) Test point GI of size 75mm x 75mm x 25mm. (ii) Watering pipe GI light grade 20mm dia from top of the earth electrode up to MS funnel with brass wire mesh embedded infloor of PCC earth pit. (GI funnel should properly tightened on GI watering pipe and embeded in PCC floor of earth pit withopen top suitable for watering of earth pits). (iii) PCC earth pit 30cm x 30cm constructed in PCC (1:2:4) type B-1 exposed surfaces smoothly finished with 15mm thick cement mortar (1:6) plaster including RCC pit cover 25cm thick with 2 Nos MS handles of 12mm dia shitable for carrying of pit cover. (iv) Angle iron frame made of 40mm x 40mm x 4mm angle iron for 30mm x 30mm PCC pit for holding the pit cover. Note : (a) The unit rate shall be include for protection pipe GI water pipe, wire mesh, funnel, excavation, RCC pit cover, test point, GI strip of size 32mm x 6mm from the earth plate and upto metallic body of the equipment/panel board etc. or 7.5 metre whichever is more. (b) PCC pit shall be provded at least 0.5 metre away from the earth pit and not just on the earth pit and extra cost of additional length of water pipes and fittings, junction elbow etc shall be deemed to be included in the unit rate. (c) RCC pit cover shall be 80mm thick pre-cast RCC (1:2:4) type B-1 reinforced with XPM weighing not less than 4Kg/ Sqm of size 300 mm x 300 mm in lieu of CI cover.

All as per item No 19.00 here in before but electrode conection by using galvanised earth lead wire of 4.0mm dia GI and protection pipe of 15mm dia by means of nuts, bols etc all as directed by Engineer In Charge

Supply and fixing galavanised pipe light grade of ISI marked 100 mm bore for passing of cable fixed to poles/walls/laid under floor complete with and including fittings as required complete all as specified and directed Engr-in-charge.

Supply and fixing switch air break gang operated out door type HT 11 KV triple poles 400 Amps air break fittings type with fixed contacts of phosphorus bronze and moving contacts of copper with mechanically operating from ground level vertical mounted complete with HT insulator on steel frame operating rod made out of 25mm dia GI pipe medium grade worked from ground level with handle and locking arrangment with 12 insulators with drop out fuse assembly complete all as specified (clamps / cross arms shall be measured and paid for separately). Note : No payment will be made without producing original test certificate of manufacturer

Supply and fixing prestressed concrete pole HT 11mtr long 152mm x 152mm at top and 152mm x 260mm at bottom with two coats of synthertic enamel paint in black and white strips up to 1.5 mtr heght including numbering poles complete all as directed at site Note:-( PCC & earth work shall be measured & paid separately under respective items)

Supply and fixing Danger notice plate for HT of 25 cm x 20 cm x 1.6mm thick mild steel sheet viterous enamelled white, with letters figures and conventional skull and bones and written as "DANGER" in signal red colour and fixed MS clamps made out of MS flat 25 mm x 3mm, including nuts & bolts, including 2 coats of aluminium paint over a coat of red oxide primer all as specified. Note:- Instructions are to be written in three languages viz.. Punjabi, Hindi and English.

Supply and fixing lightening arrester expulsion type complete with all fittings, transmission class, discharge capacity 65 kilo amp rupturing capacity 65 kilo Amps porcelain conforming to IS-3070 Pt-I suitable for 11 KV, HT over head line complete including nuts, bolts, clamps, bracket etc and connecting with GI earth wire, complete all specified and directed

Material and labour for PCC work (1:3:6) type C-2 using 40 mm graded mechanically crushed stone aggregate as in foundation of stay /copying of poles including necessary form work and fare finish to exposed surfaces without using extra cement etc. complete all as specified.

Material and labour for PCC work (1:4:8) type D-2 using 40 mm graded mechanically crushed stone aggregate as in foundation of stay /copying of poles including necessary form work and fare finish to exposed surfaces without using extra cement etc. complete all as specified.

Material and labour cross arm, bracings, supports, clamps and back plates fabricated from structural steel sections including nuts, bolts, washers, welding, bending cold or hot, drilling holes for bolts, in any shape or size as indicated inclusive of two coats of first quality synthetic enamel paint over a coat of red oxide primer duly approved by the GE complete all as directed at site by the Engineer-in-Charge.

Material and labour for precast cement concrete RCC (1:2:4) type B-1 route indicator of size 150 x 150 x 900mm with 8mm dia steel reinforcement @ 100 c/c both ways duly engraved "HT CABLE/ HT JOINT" with two coats of synthetic enamel paint first quality fixed with PCC (1:3:6) below ground level of size 300 x 300 x 300mm complete all as specified and directed Note : Quoted unit rate is deemed to be included the necessary cost of excavation, returning filling and removal etc.

Material and labour for boring hole under the road/pavment/hard standing with the help of trenchless technology using ultra sound technique and necessary machine including HDPE pipe of 150 mm dia suitable for 0.4 mpa working pressure not less than one metre below ground level complete all as specified & directed by Engineer-in-charge at site.

Supply and fixing pin type insulator porcelain vitreous, white, brown or green insulator including one galvanised mild steel spindle , two galvanised iron washers and one galvanised iron nut, 150mm height, 150mm dia for 11000 volts grade all as specified and directed.

Supply and fixing disc type insulator porcelain vitreous 145 mm heigh and 255 mm dia ball & socket type white / brown or green for 11000 volts grade complete all as specified and directed.

Dismantling and taking down existing ACSR conductor of any size by opening the binding wire from HT/ LT electric poles complete all as directed at site by the Engineer -in-Charge.

Taking down of old broken HT PCC poles including demolition of PCC and making good the distrubed surfaces complete all as directed at site by the Engiuneer-in-Charge and removing from the site .

Dismantling of existing GOD complete all as directed at site by the Engineer in chrge and removing from the site .

Dismantling of existing stay assembly complete all as directed at site by the Engineer in Charge and removing from the site .

Taking down existing cross arms, channels, angle iron, nut, bolts, stay wire, stay assembly, GI wire, anti climbing devies, danger notice boards etc complete all as specified and directed.

Taking down of old HT cable off size complete all as directed at site by the Engineer -in-Charge and relaying the same at a distance n.exceeding 100metres. Note:- (i) The quoted unit rate is deemed to included the necessary cost of sand, excavation, returning filling, removing, taking out cable cover and stacking properly for reuse of the same.

Shree Balaji Construction

KEWAL SONS

Raman Electric Trading Co

R D Bansal

BHARAT ENGINEERS

ELECTRA ENGINEERS

TARSEM CHAND AND CO.

M K ENGINEERS CO.

M/s Jyoti Electricals

Sant Construction Co.

TRIVENI CONSTRUCTIONS

UNITED SAINI BUILDERS

M/s Trade Linker Associates

Chauhan Associates

MAHESH KUMAR SINGLA CONTRACTOR