PATCHWORK/REPAIR OF PHOSPHORIC ACID UNLOADING TANK (MSRL), OFFSITE, FACT CD

PATCHWORK/REPAIR OF PHOSPHORIC ACID UNLOADING TANK (MSRL), OFFSITE, FACT CD

SHELL REPAIR OF PHOSPHORIC ACID UNLOADING TANK (MSRL), OFFSITE, FACT CD. The scope of work involves the patch/ repair/ modification/ replacement of the tank shell, as per site requirements, inspection reports, and instructions from the Officer-in-Charge. A portion of the damaged shell (if reqd) shall be removed by using grider prior to the removal of the rubber lining to facilitate tank cleaning. Upon receiving clearance after the removal of the rubber lining, the damaged portions of the shell and flanges, baffles, nozzles, manholes, and other components in the shell area shall be carefully removed by cutting or grinding as required and replaced with newly fabricated components. For shell replacement, new mild steel plates shall be shaped, bent, edge-prepared, and installed with full welding on both sides, followed by thorough grinding to ensure suitability for rubber lining. New nozzles with reinforcing pad plates shall be installed on the shell as per instructions from the Officer-in-Charge. Fabrication and replacement of flanges, baffles nozzles, dummy plates, manholes, and other fittings, shall be in the scope of this contract. After final clearance, the manholes of the tank shall be properly closed. All welding shall follow standard welding procedures, and MS plates of thickness ranging from 6 mm to 16 mm shall be used as per the instructions of Officer-in-Charge.

BOTTOM PLATE REPAIR OF PHOSPHORIC ACID UNLOADING TANK (MSRL), OFFSITE, FACT CD. The scope of work involves the patch/ repair/ modification/ replacement of the tank bottom plate, as per site requirements, inspection reports, and instructions from the Officer-in-Charge. Upon receiving clearance after the removal of the rubber lining, the damaged portions of the bottom plate as per site requirements shall be removed by cutting or grinding as required. During bottom plate replacement, proper edge preparation and back strip welding shall be ensured. The shell-to-bottom weld joint shall be carried out with full welding on both the inside and outside, and all weld areas shall be properly ground to facilitate rubber lining. If necessary, parts of the shell plate may also be cut to access or complete the repair. In such cases, any affected components on the shell such as nozzles, baffles, manholes, and pad plates etc. shall be carefully removed and later reinstated to their original design and position without any additional cost. All welding shall follow standard welding procedures, and MS plates of thickness ranging from 6 mm to 16 mm shall be used as per the instructions of Officer-in-Charge.

FABRICATION & ERECTION ROOF OF PHOSPHORIC ACID UNLOADING TANK (MSRL), OFFSITE, FACT CD. Upon receiving clearance to start the work, the damaged roof along with platform shall be removed by cutting or grinding prior to the removal of the rubber lining to facilitate cleaning. The contractor shall fabricate and erect a new roof using MS plates and appropriate structural members, including provision for nozzles, platforms, and other related fittings. The scope of work includes cutting, shaping, and assembling MS plates and structural components as per the original tank design. Full welding shall be carried out on all joints, both internally and externally, followed by thorough grinding to prepare the surface for rubber lining. Standard welding procedures shall be followed at every stage. Additional temporary supports shall be arranged as required to ensure safe and smooth progress of the erection activities. The tank shell’s roundness (ovality) shall be checked and corrected before starting roof installation. The roof shall be dismantled/erected in segments, depending on site conditions and crane availability. Fabrication of flanges, nozzles, dummy plates, manholes, and other fittings, on the roof shall be in the scope of this contract. Additionally, repair/replacement of structural members, curb angles, beams, stiffeners etc of the tank shall also be in the scope of this contract.

M A Shamsudeen (BID ID -3293480)

M A ALI (BID ID -3293486)

K G SIVANANDAN (BID ID -3293971)

RAJU K.U (BID ID -3294687)

AYYAPPANKUTTY M M (BID ID -3294734)