Insulation Resistance improvement and oil filtering of 13K Transformer

Insulation Resistance improvement and oil filtering of 13K Transformer

Removal of ITL Make 11/0.433kV, 1.6 MVA Transformer-TFR-13K with oil capacity-1220 liters from transformer bay in plant sub-station of Petro Plant and transporting it to vendor's dedicated work shop, as per the scope of work specified with terms and conditions attached. The scope of work includes: 1) Manually remove the 13K transformer from bay at plant substation and leading to the nearby road using Crane /Tools / tackles, skilled workers and under strict supervision of qualified supervisor ensuring no damage to adjacent pipes or pipe rack & radiaters. 2) Loading the transformer on to vehicle using crane of sufficient capacity. 3) Transporting the transformer to vendor's dedicated work shop for servicing / Ovening. 4) Unloading the transformer from Vehicle using crane of sufficient capacity at venders workshop. Note : Arrangement of sufficient capacity crane/ chain blocks, tools and tackles including labor are under venders scope.

Primary inspection, draining and preserving of oil from ITL Make 11/0.433kV, 1.6 MVA Transformer-TFR-13K with oil capacity-1220 liters for refilling after maintenance. The scope of work includes: 1) Primary inspection of the transformer. 2) Checking the BDV of the transformer oil by the vendor as part of inspection which shall be witnessed by FACT. 3) Draining of oil from the Transformer tank in to empty oil barrels/ tank and stored in vendors workshop for refilling after maintenance. Note : Provision of sufficient capacity barrels/ tank is under venders scope.

Dismantling of ITL Make 11/0.433kV, 1.6 MVA Transformer-TFR-13K with oil capacity-1220 liters at venders workshop for ovening. The scope of work includes: 1) Dismantling the top mounting parts, opening the top cover, lifting the Core-coil assembly, cleaning the winding and core assembly & keeping out side for complete oozing out of the oil. Minor copper granules present, if any, shall be removed. 2) Inspection of core and windings for any damages. 3)Conduction of Insulation resistance measurement as part of inspection and recording the details which shall be submiited to FACT.

Ovening of ITL Make 11/0.433kV, 1.6 MVA Transformer-TFR-13K with oil capacity-1220 liters at vendor's workshop The scope of work includes: 1)Carrying out IR improvment works by Keeping the core-coil in Oven at vendors workshop for sufficient days in vendors workshop.

Reassembling and oil filling of ITL Make 11/0.433kV, 1.6 MVA Transformer-TFR-13K with oil capacity-1220 liters at venders workshop after ovening. The scope of work includes: 1)Placing of lifted core and windings to its original position. 2) Reassembling of the transformer to its original shape after replacing the damaged gaskets and tightening the inner connections with proper tools and are under vendes scope. 1)Refilling the drained oil through filter machine. Minor copper granules present, if any, shall be removed during filling process.

Filtering the drained oil of ITL Make 11/0.433kV, 1.6 MVA Transformer-TFR-13K with oil capacity-1220 liters, as per the scope of work specified with terms and conditions attached. The scope of work includes: 1)Vacuum oil filtering method shall be followed during oil filtration. The contractor shall ensure NIL air locks during final oil filling. 2) Testing of oil as per clause 9 of special conditions. Note: Oil for toping up is under FACT scope.

Transporation of Transformer TFR 13K (ITL Make,11/0.433kV, 1.6 MVA ) from vendor's workshopto to FACT petrochemcial division's plant sub-station transformer bay, as per the scope of work specified with terms and conditions attached. The scope of work includes: 1) Loading the Transformer in to vehicle & transporting to FACT- Petro Plant substation premises and Unloading at site, 2)Leading, Positioning and installing the transformer to its original position using Crane /Tools / tackles, skilled workers and under strict supervision of qualified supervisor ensuring no damage to adjacent pipes or pipe rack & radiaters. 4)Transformer shall be put on line after checking BDV and insulation resistance. Note : Arrangement of sufficient capacity crane/ chain block, tools and tackles including labor are under vendor's scope.