PROVISION OF 2 NOS HIGH MAST LIGHTS AT ADMIN AREA AND RAVINES AREA AT NAVAL STATION BHEEMUNIPATNAM

Amount

Supply,Installation,testing and commissioning of Hot dipped Galvanized steel high mast lighting system of 16 meter long with 2/3 wire rope system and its accessories, 3 phase motor system for taking up/down the light fixing arrangement of the high mast controlled from the timer switch panel suitable for loading 08 Nos 200 watt LED lights symmetrically fitted along with their control gear and having two point suspension system with stainless steel wire rope of 8 mm dia 97/19 guage and double drum winch with luminare mountng arm, pully assembly, aviation obstruction light. Lightning arrestor spike including suitable size of RCC M-30 (Design mix) foundation suitable for the height and anchoring with nuts,bolts,washers,anchor plate,template and HDPE PVC pipe,etc and complete all as per manufacturers instructions,specified and as directed with the following details :-

(A) Details of High Mast System : (i) Hight of Mast : 16 Mtr, (ii) Metal protection treatment : Hot dip galvanized as per IS 4759/IS 2629,average 70 microns thickness of galvanisation (iii) No. of Sections : Two Sections,each section length 8250 mm. (iv) Material construction : S355 grade as per BS:EN10 025/IS2062 and cross section of mast (Number of sides) 20 sided polygon (v) Base dia, and top diameter (A/F): Top dia 150 mm (minimum) & Bottom dia 470 mm (minimum) (vi) Plate Thickness : Top 4 mm thickness Bottom : 5 mm thickness (vii) Type of Joints : Stress fit at site (viii) Length of overlap : 1.50 times the dia of insertion (ix) Provision for cable termination : MCB Isolator (x) Base plate : 650 mm x 36 mm (xi) Lightning protection finial : G.I single spike of length 1200 mm (minimum) (xii) Size of opening & door at base : 1000 mm x 250 mm (minimum) (xiii) Lightning protection finial : G.I single spike of length 1200 mm (minimum),junction box,earthing pipe,etc

(xiv) PCD of foundation bolts : 560 mm (minimum) (xv) Foundation bolts : 850 mm (12 Nos). Make: Wipro/Philips/Bajaj/GEC/CG as approved by GE. The High mast shall be of continuously tapered, polygonal cross section, at least 20 sided, presenting a good and pleasing appearance. The mast shall be manufactured using special steel plates, conforming to BS-EN10-025. Each section shall be fabricated out of single plate duly folded and welded. There shall be only one longitudinal seam weld per section. The mast structure shall be suitable to sustain an assumed maximum reaction arising from a wind speed of 250 KM per hour as per IS 875 part-3 (three second gust), and shall be measured at a height of 10 meters above ground level. The design life of the Mast shall be atleast 25 years.

(B) Lantern Carriage: The Lantern Carriage shall be of special design of internal dia 710 mm made of 50 NB ERW Class "A" GI tube,AOB stand, the tubes acting as conduits for wires, with holes fully protected by grommets. The Lantern Carriage shall be so designed and fabricated to hold the required number of flood light fittings and the control gearboxes, and also have a perfect self balance.

(C) WINCH: For Raising and lowering the lantern carriage for the installation and maintenance of the luminaries and lamps, a suitabe double drum double Winch arrangement shall be provided with the winch fixed at the base of the Mast and the specially designed hard frame assembly at the top. The winch shall be of completely self sustaining type, without the need for brake shoe, springs or clutches. Each driving spindle of the winch shall be positively locked when not in use, gravity activated PAWLS. Individual drum also should be operated for fine adjustment of lantern carriage. Details of Winch/Power tool (i) Type/SWL of winch : Double drum, double gear SWL 750 Kg (ii) Method of opertion : Motorized (iii) Motor capacity : 3 HP (minium),6P (iv) Torque limitor : With mechnical tripping facility and reversible option install the inside compartment.

(D) Head Frame : The head frame, which is to be designed, as a capping unit of the mast, shall be of welded steel construction, galvanized both internally and externally after assembly. The top pully shall be appropriate diameter, large enough to accommodate the stainless steel wire ropes and the multi-core electric cable. The pulley block shall be made of non-corrodable material, and shall be of die cast Aluminium Alloy (LM-6)

(E) Stainless Steel Wire Ropes: The suspension system shall essentially be without any intermediate joint and shall consist of only non-corrodable stainless steel of AISI-316 grade. The stainless steel wire ropes shall be of 7/19 construction, the central core being of the same material. The overall diameter of the rope shall not be less than 8mm, safety of over 5 for the system at full load as per the TR-7 referred to in the beginning of this specification. The end constructions of ropes to the winch compression splices. Two continuous lengths of stainless steel wire ropes shall be used in the system and no intermediate joints are acceptable in view o the required safety. No intermediate joints/ terminations. Either bolted or else, shall be provided on the wire ropes between winch and lantern carriage. Details of Stainless Steel Wire Rope: (i) Grade/construction : AISI 316,7/19 construction (ii) Number of roples : Two continuous (iii) Diameter : 8 mm (minium) (iv) Braking load capacity : 2350 kg per SS wire rope (v) 3 Nos L stopper,handle,compensating disc,D clamps,etc

(F) Power Tool for the Winch: A suitable, high-powered, electrically driven, internally mounted power tool, with manual over ride shall be supplied for the raising and lowering of the lantern carriage for maintenance purposes. The speed of the power tool shall be to suit the system. The power tool shall be single speed, provided with a motor of the required rating. The power tool shall be supplied complete with suitable control. The capacity and speed of the electric motor used in the power tool shall be suitable for the lifting of the design load installed on the lantern carriage. The power tool mounting shall be so designed that it will be not only self-supporting but also aligns the power tool perfectly with respect of the winch spindle during the operations. Also a handle for the manual operation of the winches in case of problems with the electrically operated tool shall be provided and shall incorporate a torque limiting device. The power tool operation shall always be through a separate torque-limiting device to protect the wire ropes from over stretching. It shall be mechancial with suitable load adjusting device. The torque limitor shall trip the load when it exceeds the adjusted limits. There shall be suitable provision for warning the operator once the load s tripped off. The torque limitor is a requirement as per the relevant standards in view of the overall safety of the system. Each mast shall have its own power tool motor.

(G) Aviation Obstruction Lights : Suitable Aviation Obstruction Lights of reliable design and reputed manufcturer shall be provided on top of each mast with ERP insulated PVC sheathed copper trailing cable of size 5 core,4 sqmm. (H) Earthing Terminals: 2Nos, earth terminal using 12mm diameter stainless steel bolts shall be provided at a convenient location on the base of the Mast, for lightening and electrical earthing of the mast. Each mast shall be earthed at two points using minimum 25x6 mm GI strip. Note : The quoted rate is deemed to include the cost of aviation obstruction light, Lightening arrestor spike, required suitable size of RCC foundation for the high mast pole and 25x6mm GI strip for earthing connection from LA spikes at top of the pole to the earthing point.

All as per Item No.1 to 1.08 above but High mast 12.50 m length with the following:- (A) Details of High Mast System : (i) Hight of Mast : 12.50 Mtr, (ii) Base dia, and top diameter (A/F): Top dia 150 mm (minimum) & Bottom dia 360 mm (minimum) (iii) Plate Thickness : Top 3 mm thickness Bottom : 4mm thickness (iv) Base plate : 520mmx30 mm (v) PCD of foundation bolts : 460 mm (minimum) (vi) Foundation bolts : 850 mm (6 Nos) (vii) Non flame proof Motor : 1.50 HP,3 Phase Note : All other details are same as per S.No 1 to 1.08 above. Make: Wipro/Philips/Bajaj/GEC/CG as approved by GE.

S&F Flood light fitting,1x200 W LED,230 V luminary, energy saving,environmental friendly,exclusive innovative pressure die cast aluminium IP-66 flood light with high power 200 Watt LEDs as light source,suitable for highlighting architectural facade high mast pressure,die-cast,integral weather proof housing heat resistant toughened clear glass cover with reflector with all accessories made suitable for fixing on high mast pole,complete all as specified and directed. Make: Crompton Cat part No.LSFO-200-CDL/60 or equivalent model in Philips/Havells/Bajaj as approved by GE.

S&F Flood light fitting,1x120 W LED,230 V luminary, energy saving,environmental friendly,exclusive innovative pressure die cast aluminium IP-66 flood light with high power 120 Watt LEDs as light source,suitable for highlighting architectural facade high mast pressure,die-cast,integral weather proof housing heat resistant toughened clear glass cover with reflector with all accessories made suitable for fixing on high mast pole,complete all as specified and directed. Make: Crompton Cat part No.LFLN-120-CDL/60 or equivalent model in Philips/Havells/Bajaj as approved by GE.

Supply, laying and testing FRLS cable XLPE Insulated ,screened, PVC bedded, galvanized steel strip or wire armoured, electric power cables (heavy duty) 1100 Volts grade with stranded aluminium conductor of size 4 core 25 sq mm including necessary cable lugs,glands,etc complete all as specified and directed.

Excavation in trenches not exceeding 1.5 m wide and not exceeding 1.5 m in depth,for laying of under ground cables etc and getting out in soft/loose soil complete all as specified.

Returning, filling in, including spreading, levelling, watering and well ramming in layers not exc. 25 cm in any type of soil complete all as specified.

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

M & L for natural river sand as cushioning of cables, including spreading and punning down complete all as specified. Note : punned thickness shall be measured for payment purpose

Supply and laying of flyash bricks, of size 200x 100 x80 mm best locally available for cable protection in trenches, complete all as specified and directed.

S&F Galvanised Iron pipe 50 mm bore (medium grade) including fittings laid as cable protection including sealing both ends for cable pipe,complete all as specified.

M&L for cutting the existing road / PCC / path for laying cables and making good the exisitng surface with PCC 1:3:6 type B1 by (using 20 mm graded stone aggregate) 100mm thick including necessary earthwork excavation, returnfilling,removal,etc complete all as specified and directed.

Supply, fabricated, install, test and commissioning LT out door control panel weather proof, dust/ Vermin proof, powder coated, made out of 3.15 mm thick CRCA sheet, double openable door and necessary hinges,lockable doors consisting of chamber with angle iron frame using 50x50x6 mm and locking arrangement, IE-65 distribution pillar CPRI approved manufacturer, IP-55 protection and aluminium bus bar of 400 Amps TPN and earth wire not les than 40x6 mm per phase and design to withstand a fault level of 25 KA,415V with necessary double compression copper,SS gland for incoming and out going cable including suitable size of PCC platform with PCC (1:2:4) type B-1 (using 20 mm graded aggregate) rasised base with control internal wiring etc., and compressing the following : (i) MCCB 4 pole,160 Amps, 25 KA ,415 V - 01 No. (incoming) (ii) MCCB 4 pole,100 Amps, 25 KA ,415 V - 01 No. (outgoing) (iii) 10 Amps Sequntial timer-1 No. (iv) 25 A power connector - 2 Nos (v) MCB,DP,15KA,32 Amps 230V-01 No. (vi) LED Phase indicator lamps - 01 set of three.

S&F for Aluminium strip of size 25 mm x 3.15 mm fixing with saddles and screws for roof conductor above 1.50m ground level complete all as directed by Eng-in-charge.

M&L Earthing complete with galvanised steel earth plate electrode 600×600× 6mm thick, buried directly and preferably vertically in ground (earth pit not less than 2.25 metres deep below ground level) with top edge of the plate not less'than 1.5 metres below normal ground level, connected to galvanised iron strip of size 32x6mm (up to 7.5 m in length from earth plate ) by means of bolts, nuts, check nuts and washers of galvanised iron or steel all as shown in electrical plate No. 3 connected to earthing test point including earth work and excavtion in any type of soil, PCC 1:3:6 type C1 chamber and RCC 1:2:4 type B1 cover 40 mm thick, with 8mm dia steel deformed (TMT bars) reinforcement at 150mm c/c both ways, 20mm dia GI medium grade pipe for earth lead protection, 20 mm dia GI medium grade pipe for watering, water funnel, testing point etc complete all as specified and directed by Eng-in-charge and testing on completion.

suresh electricals

KIRON ENGINEERING CORPORATION

CIVILEC ENGINEERING WORKS

R AND A ASSOCIATES ENGINEERS CONTRACTORS