fabrication , erection and commissioning of western side clean sulphur pit coils in sa plant , fact-cd . , fabrication , erection and commissioning of western side clean sulphur pit coils in sa plant , fact-cd . , fabrication of clean pit coils : collect the required materials from store and transport to work site . make necessary site arrangements for the work . prefabricate the coils as per drawings / instructions from engineer in charge and considering the site measurements . any required modifications by the competent authority shall be incorporated . structural support for the coils shall be fabricated as per site conditions and instructions from engineer in charge . all weldings shall be full welding only . all weld joints shall be dp tested and witnessed by the concerned engineer in charge . pressure test the fabricated coils with steam at a pressure of 6 kg/cm2 . clear the site and transport the scrap to scrapyard . , erection and hooking up of new coils : make necessary site arrangements for the work . erect the newly fabricated coils in clean storage pit as per instructions of the engineer in charge . connect the inlet and outlet headers of steam coils to existing steam network with new isolation valves , steam traps etc . any additional modification required in the steam lines / replacement of existing steam valves shall be done by the contractor . additional steam line tapping if required shall be done by the contractor . all weld joints shall be full welding . ensure leak proof joints . providing proper supports for the system wherever necessary as per instruction of engineer in charge . , fabrication and erection of cover plate for clean pit with structural supports: collect and transport required materials / structurals from store to work site . make necessary arrangements for the work . fabricate and erect structural supports over clean pit area as per instructions from engineer in charge . structural foundation frame for clean pit pumps shall also be fabricated and erected along with the structural supports as per instructions from competent authority . fabricate and erect clean pit cover plate from 6/8mm ms plate as per instructions and welding to supports . fabrication and erection of hand rails , pit level indicator , stair case , opening / inspection covers on the cover plate etc . is also under contractors scope . after successful completion of work , clear the site and transport the scrap to scrapyard . all structures fabricated shall be painted with two ( 02 ) coats of zinc chromate yellow primer of approved make / quality and two ( 02 ) coats of synthetic enamel paint of distinct colours of approved make / quality after proper mechanical cleaning using wire brush . all costs incurred in painting including cost of paints , primers , painting equipments , cleaning equipments , handling charges , scaffolding and any other incidental expenses will be under contractors scope . , erection and hooking up of clean pit pumps : make necessary site arrangements for the work . transport the pumps and motors to worksite from concerned workshops . erect the pump on the new foundations . align the pump with the foundation and provide base bolts and full tighten the bolts . erect the motor on the motor base , align motor with pump , provide base bolts and full tighten . couple the pump and motor , provide coupling guards . fabricate and provide steam jacketing lines and condensate lines for the pump with required valves , steam traps etc . as per the instructions from engineer in charge and site conditions .