Special conditions

Name of work: Supplying and laying of HDPE pipeline from Power House to Guard pond at NTPL , Tuticorin.1. The HDPE pipes to be supplied shall conform to the requirements of IS 4984 : 1995 and the bidder has to produce the manufactures test certificate(MTC) from the manufacturers and take approval from NTPL officers before commencing the supply of pipes.2. Apart from this pipe samples shall be tested at reputed labs and third party test certificates shall also be furnished.3. The scope of work under various items includes cost and conveyance of all materials (unless otherwise specified) and all labour charges, scaffolding tools, plants, safety measures etc., complete. 4. The work has to be carried out in Plant area which is under operation. The laying and jointing of pipelines shall be carried out without affecting Plant operation and also with prior approval of NTPL officers.5. After laying the pipe line, hydro test is to be conducted wherein the pipe line/joints/ specials etc shall withstand a working pressure of 6 ksc for a duration of 30 minutes holding period. The pumps, equipment, pressure gauges, dummies, flanges, gaskets for isolation of pipe lines for carrying out the hydro test etc have to be arranged by the contractor at his own cost.6. The contractors authorized representative should be available at site of work to take instruction from NTPL officers regarding execution of the work.7. The Quantities mentioned in the schedule are only tentative and NTPL reserves the right to increase or decrease to any extent and depending upon the requirements at site during the Period of contract. The entire contract value can vary up to (+) or (-) 20% of the total contract value.8. Any item of work not included in the schedule of quantities shall be paid extra at the rates worked out on the basis of offer quoted or otherwise negotiated which should be determined before executing such item of work. PAYMENT TERMS9. Progressive part payment will be made against the measurement on the quantities of work/supply of materials executed. 10. However for item No. 1 & 6, the payments will be processed as below.a) 50% payment will be released on supplying the pipes at site and fulfilment of special condition no 1 &2.b) 35 % payment will be released on completion of laying and jointing the pipelines c) 15 % payment will be released on satisfactory completion of hydro test.