Supply, fabrication, modification, dismantling and erection of metal structures , pipe supports for implementation of design change notice and revised working drawings inside reactor building of KKNPP unit 3 and 4

Amount

Supply, fabrication and erection of structural steel: Study of the working drawings/DCN/TAR/FCN, preparation of bill of materials, Supply & transportation of structural steel material of various profiles conforming to IS 2062 grade ranging from E250 to E350 of Quality A/B0/BR plates /sheets/ angle/ channel/ beam and various profile as per IS 808, 1730,1732, 3502,4923, metal gratings, fasteners as per IS 1363 grade 5.6, 8.8 &10.9 etc, transportation (to and within site), storage, incoming inspection and preparation of IMIR, preparation of detailed metal structure drawings (DMS), handling, fit up, fabrication, welding, NDE, painting/preservation, shifting and leading the material to location inside reactor building at various elevations from +31.7m to +6m, erection, site welding & NDE inspection as per drawing(WD/DCN/FCN/TAR) and technical specification. This work also includes shifting to painting yard and to site , providing scaffolding / temporary platforms, support arrangements, cutting, dismantling the gratings/structures at various elevations inside the reactor building for leading the material to the location and restoration of gratings after completion of work, wire cutting/machining of seismic stopper plates, man power, tools, tackles, winches, plant and machineries, welding electrodes as per technical requirement, other consumables, preparation of reports and submission for acceptance. Note: Painting will be measured in the relevant BOQ item

Removal, Modification and re erection of existing metal structure for implementing DCN: Study of the working drawings /DCNs/TAR/FCN , identification of the area of modification, cutting & removal of the existing gratings / beams/ channel/ angles / brackets, and Piping Supports of various pipe size confirming to IS 2062 grade ranging from E250 to E350 of quality A/B0/BR of various profiles, dismantling the gratings & structures at various elevations inside the reactor building for leading the material at the location and restoring the dismantled structure after leading of material and marking the dimension, preparation of detailed metal structure drawings (DMS)& dismantling scheme based on DCNs/TAR/FCN, providing support arrangements, disconnecting the members by removing the fasteners or by grinding or by gas cutting as per the site condition, modifying the existing members to the requirements as per the DMS and re-erecting the modified members which include fit up, welding, NDE, fastening using torque tightening, restoration of gratings touch up painting with primer and final paint, as per the drawings and technical specifications. This work also includes removal of the unwanted material from the modified structure out of the building, shifting to NPCIL stores and depositing at the location identified after material accounting, arranging manpower , tools , tackles, providing scaffolding / temporary platforms , plant and machineries, welding electrodes, cutting set and other consumables, preparation of reports and submission for acceptance

Dismantling and removal of existing metal structures: Study of working drawings/DCN/TAR/FCN , preparation of detailed metal structure drawings (DMS) and dismantling scheme as per WD/DCN/FCN/TAR , identification of members for removal , dismantling the gratings/structures at various elevations inside the reactor building for leading the material out of the building at various location and restoration after removal of material, marking the dimension, cutting/dismantling of the existing metal structure/gratings/pipe supports after providing required support arrangements by removing the fasteners or by grinding or by gas cutting as per the site condition without disturbing / damaging adjacent structures at all elevations, transporting and handing over of all useable materials to NPCIL's stores and disposal of balance surplus materials and submission of reports after completion of work including the arrangement of man power, plant & machinery , tools & tackles, winches, scaffolding erection, necessary consumables, electrodes as per technical specifications.

Erection and dismantling of scaffolding: Erection of scaffolding using standard scaffolding, cross supports, clamps, for making approach/ working platforms and removal of the scaffolding after the completion of work including arrangement of man power, plant & machinery, tools & tackles, consumables and completion of work as per IS 3696, tender specification and drawings. Note: The base size (plan) & height of scaffolding erected shall be considered for the measurement. No inclined supports, lateral support bracing etc projected beyond base size shall be considered in measurement for payment. Hire charges for erected scaffolding for making approach/working platform as per the requirement and approved documents. Number of days for rent will be considered from the next day of completion of erection up to date of clearance (inclusive) from Engineer for dismantling. This work shall be carried out only after the instruction of engineer in charge.

Supply, fabrication and erection of Pipe support: Study of working drawings,/DCNs/FCN/TAR, preparation of detailed metal structure drawings (DMS) as per working drawing/DCN/FCN/TAR, preparation of bill of materials, Supply, transportation, handling, fabrication, erection of pipe support clamps, guide plates of required diameters ranging from 15NB to 600NB confirming to IS 2062 grade ranging from E250 to E350 of quality A/B0/BR of various profile and dimension which includes marking , cutting, bending using hydraulic or mechanical press to required profile, drilling, grinding, welding , NDE inspection , preparation & submission of report. This work also includes supply of welding electrode as per technical specification , mechanical fasteners, consumables, grit blasting & Painting (will be paid under relevant BOQ item) and cleaning aids as per tender specification and drawings, Identification of area of erection, dismantling the gratings/structures at various elevations inside the reactor building for leading the material if required, fit up, welding, NDE inspection , fastening using torque tightening, touch up paint with primer and final paint as per the drawing and technical specification. This work also includes leading material to the locations inside the building , arranging manpower , tools , tackles, providing scaffolding / temporary platforms , plant and machineries, cutting set and other consumables, preparation of reports and submission for acceptance. Note: Painting, will be measured in the relevant BOQ item.

Supply, fabrication & erection of small bore pipe supports (10NB to 80NB)

Supply, fabrication & erection of pipeline supports for pipe size 80NB to 300NB

Supply, fabrication & erection of pipeline supports for pipe size DN>=300NB

Grit blasting and primer application on structure and pipe support material: Handling, transportation of material , girt blasting the surface to required roughness , supply of primer paint zinc anode 304 (NPC) of Berger make or equivalent in Asian paints, application of primer over the grit blasted surface for thickness of around 60-75 microns as per drawings and technical specification. This work also includes arranging manpower, tools & tackles, establishing the grit blasting facility, cleaning consumables, steel grit as per requirement, handling and shifting of material, preparation of reports and submission for acceptance

Supply and application of epoxy paint on metal structures and pipe support material: Supply of epoxy paint such as Apcodur 641CS of Asian paints or protectomastic of Berger paints or any other equivalent paint with prior approval from NPCIL for structure , pipe support and other structures .This work includes storage, preparation & submission of IMIR for acceptance, cleaning the surface, application of two coats of paint over already primed surface of total thickness of 240 - 260 microns (including thickness of primer) at various elevations & locations as per drawings and technical specification. This work also includes providing manpower, necessary tools, tackles, aluminium ladders, cleaning aids, cotton waste, and preparation of report & submission for NPCIL acceptance.

Temporary Protective covers for equipment/valves and preservation: Supply of Structural Steel of various sections angles/ flats (light members) confirming to IS 2062-2011 Grade E-250 Quality-A,BR & Plates confirming to IS 2062-2011 Grade E-250 Quality-BR, one side color coated GI sheet for common use of thickness up to 2.0 mm as per IS 277[120 GSM min] taking measurements, cutting , drilling , fabrication, bending, welding , fixing of sheet to structural members, surface preparation and primer ( min 1 coat not less than 50 micron for primer ) application on structural items, covering of erected equipment's, valves, dampers for protection during construction and erection stage at site and dismantle if required on instruction of Engineer. The work also involves supply of welding consumables , fasteners including self tapping screws , sealing, providing tools & tackles ,scaffolding, manpower for erection and fixing and removal of structures, cleaning and area preservations for following items

Structural Steel work for equipment protection, safety barricading and other miscellaneous works

Supply, fabrication and erection of GI 1 mm to 2 mm thick sheet with one side color coated for temporary protection of erected equipments.

Supply, testing, commissioning of industrial vacuum cleaner- wet & dry use heavy duty industrial vacuum cleaner with metal and liquid separator, dust collection fitted with PU wheels, lifting hooks, with mild steel as material of constructions, for long lasting performance . The product shall meet the requirement having a power rating minimum of 5KW , vacuum minimum of 290 mbar, air flow minimum of 530 m3/hr, collection capacity minimum of 80 liters, This works also includes transportation, storage, moving the consignment to the working location, erection, testing and commissioning, maintenance of equipments as specified in the technical specification, inclusive of electrical, hydraulic/pneumatic,lubrication,coolant equipments, filters, sensors for automatic cut off of blower, drain valve and all essential accessories/spares like brushes, nozzle, pipes, hoses, power cables with distribution board required for operation of the machine and the machine shall meet the specified performance. Note: Before placement of the PO the specification shall be confirmed with the engineer in charge.

Supply of mechanical fasteners

Carbon steel bolt range from (M6 to M10) (Length 100- 120mm) of strength grade 8.8 with nut , lock nut , washers as per IS 1367 as per technical specification

Carbon steel bolt range from ( M12 - M16) length 100-120 mm of strength grade 8.8 with nut , lock nut, washers as per IS 1367 as per technical specification

Carbon steel bolt range from (M16 to M20 ) length 100-120mm of strength grade 10.9 with nut, lock nut, washers as per IS 1367 as per technical specification

Carbon steel bolt range from M20-M24 Length 110-130 mm of strength grade 10.9 with nut , lock nut, washers as per IS 1367 as per technical specification

Carbon steel bolt/stud M30-M36 Length 130-150mm of strength grade 10.9 with nut , lock nut, washers as per IS 1367 as per technical specification

POWER TECH MECH PRIVATE LIMITED

PES Engineers Private Limited