Handling, Fabrication, Welding and Erection of Stainless Steel piping for OLW and ILW tanks and Supply of SS Pipe Fittings and Supporting Structural members at Waste Tank Farm area, FRP, FRFCF

Amount

SS PIPE FABRICATION & ERECTION: Handling, transportation of stainless steel seamless pipes of 304L quality, marking, cutting, fabrication (excluding welding), surface treatment of pipes as per approved procedure and erection of pipes on fabricated supports at site, as per the approved drawings. Sizes involved DN8 to DN250 Sch 40/10.(The rate for each meter erected up to pipe size DN 25 shall be considered as one inch meter)

PIPE BUTT WELDING (ER 308L Filler Wire): Preparation of drawings, Gas Tungsten Arc butt welding of stainless steel pipes of grade 304L quality, Sch 40 pipe size DN8 to DN100 Sch 40, including hookup joints, using Argon gas for shielding and purging, ER 308L filler wire as consumable, Liquid penetrant examination (LPE) and local passivation of the weld joints as per specifications. (The rate for each butt joint welded up to DN 25 shall be considered as one inch Dia.)

BEND FABRICATION:Fabrication of stainless steel pipe bends upto 40 NB size using hydraulic bending machine or any other means as per approved drawing. Bending procedure shall be duly approved by department in advance. The rate shall include liquid penetrant examination, thickness measurement at bend portion using ultrasonic thickness measurement gauge and local passivation as per specification Bend radius within 5d mm of pipe NB (45/90 degree Bend for Sch 40 pipes). Please see the relevant clause Section-V of tender document.

ELBOWS SUPPLY & ERECTION: Supply of the following stainless steel elbows of material ASTM A 403 WP 304L confirming to ASME-B 16.9, with Bend Radius 1.5D and erection (Excluding welding) along with the pipes as per approved drawings, 90° Elbows of size 40 NPS Sch.40S

U-STRAPS : Supply of SS welded U-Strips 50mm wide and 8mm thick confirming to ASTM A240 type 304L for the erection of supports for following pipe sizes:40NPS

U-STRAPS : Supply of SS welded U-Strips 50mm wide and 8mm thick confirming to ASTM A240 type 304L for the erection of supports for following pipe sizes:50NPS

U-STRAPS : Supply of SS welded U-Strips 50mm wide and 8mm thick confirming to ASTM A240 type 304L for the erection of supports for following pipe sizes:100NPS

U-STRAPS : Supply of SS welded U-Strips 50mm wide and 8mm thick confirming to ASTM A240 type 304L for the erection of supports for following pipe sizes:200NPS

ERECTION OF FITTINGS ( ISSUED AS FIM) : Handling, transportation, cleaning of valves / pipe fittings issued as free issue material by the department and erection in stainless steel pipe line at site. Erection of following items: Equal TEE, Elbows, Steam Ejectors, Foot Piece etc (For payment, erection of each DN8 or DN 15 fitting would be considered equivalent to 0.5 inch meter and for other higher sizes inch meter would be considered equivalent to the size (DN) of the fitting in inches.

TEE JOINT PREPARATION & WELDING: Marking, cutting, drilling of stainless steel pipes of 304L quality for the preparation of Tee joints as per approved procedure followed by Welding of Tee joints (Gr.304L Stainless steel pipe to pipe) using GTAW process with ER 308L filler wire and Argon gas for shielding and purging including root & final LP examination and local passivation of the welded joints as per tender specifications. The rate for each joint welded upto pipe size DN 25 will be considered as one inch dia irrespective of the pipe size and for higher size the measurement will be equal to the nominal dia. of the pipe in inches.

STAINLESS STEEL SUPPORTING STRUCTURE: Supply of AISI stainless steel 304L quality sheets plate 1.6/3/6mm thick, forming and fabrication of angles/channels/box structure, clamps etc for the installation of stainless steel pipe lines and pipe fittings at site inclusive of fabrication and welding both off site and onsite using GTA welding as required for installation of supporting structures as required at site as per approved procedure and drawings.

GAS TUNGSTEN ARC FILLET WELDING of Stainless steel pipe to Stainless steel plate / plate, pipe to dummy flanges, (Blinding) of stainless steel pipe lines, fillet joints as required for pressure testing (as determined by the engineer). Welding shall be carried out using ER308L filler wire with Argon gas for shielding and purging as per specifications. Item rate shall be inclusive of LP examination and local passivation. The rate for each joint welded upto pipe size DN 25 will be considered as one inch dia irrespective of the pipe size.

MITER BEND FABRICATION AND WELDING: Marking,Cutting, Fabrication and Weldingof Stainless steel pipe miter bends as per approved drawings and GTA welding using Argon gas for shielding and purging and ER308L filler as consumable inclusive of LP examination and local passivation of weld joints as per specifications.- Material ASTM A312 TP 304L, 90degree Mitre Bend (2Piece 3 Weld) Size : DN 80 Sch.40 to DN 200NB

FLOW TEST of each pipe bend using demineralised water as per tender specifications.

PRESSURE TESTING of the pipe lines as per specifications given in the tender(Each Line start to end is considered as one number).

X-RAY: X-ray examination of butt welded pipe joints as per the technical specifications of the tender ( Generally it is as per ASME Section-VIII, Div-I ) using conventional X-ray machine. The supply of X-ray machine, film, dark room facility, consumables for film washing, skilled and unskilled personnel are under the scope of the contractor. Refer Section XII of tender document for other aspects and payment eligibility. (Note: X-ray examination of butt welded pipe joints calls for 100% X-radiography for WTF/Analytical area piping and 10% for ART piping. The penalty shall be as per UW-52 of ASME, Section-VIII, Division-1) Pipe Size:8NB to 40 NB pipe joints.

X-RAY: X-ray examination of butt welded pipe joints as per the technical specifications of the tender ( Generally it is as per ASME Section-VIII, Div-I ) using conventional X-ray machine. The supply of X-ray machine, film, dark room facility, consumables for film washing, skilled and unskilled personnel are under the scope of the contractor. Refer Section XII of tender document for other aspects and payment eligibility. (Note: X-ray examination of butt welded pipe joints calls for 100% X-radiography for WTF/Analytical area piping and 10% for ART piping. The penalty shall be as per UW-52 of ASME, Section-VIII, Division-1) Pipe Size:50NB and above upto 200 NB pipe joints

ANCHOR FASTENERS: Supply and fixing the HILTI/Fisher anchor fasteners of size M20 mm x 150 mm along with bolts and washers for providing Duct / tray supports where ever embedded plates are not available/provided.

Sri Venkateswaraa Engineering

United Systems and Projects india Pvt Ltd