PACKAGE : I Bid Document VOLUME : II - Public Health Engineering
PACKAGE : I Bid Document VOLUME : II - Public Health Engineering
PACKAGE : I Bid Document VOLUME : II - Public Health Engineering
You also want an ePaper? Increase the reach of your titles
YUMPU automatically turns print PDFs into web optimized ePapers that Google loves.
i) Seal ring/ earing ring : Materials having hardness difference of<br />
at least 50 BHN with the nearest<br />
component.<br />
j) Column pipe : M.S IS : 2062, with anticorrosive epoxy<br />
painted both inside and outside after<br />
proper surface finish.<br />
19.8 Inspection and Testing.<br />
All materials, casting used for manufacturing of the pumps with allied equipment<br />
shall be of best tested quality and the contractor shall submit the test certificates for<br />
the MOC at the time of supply.<br />
Ultrasonic tests on shafts are to be conducted and the test certificates for the same<br />
shall be furnished.<br />
Dye penetration test to the impellers are to conducted and the test certificates shall<br />
be furnished with the supply.<br />
Dynamic balancing of the impeller, coupling etc. are to be conducted and the test<br />
certificates to be furnished.<br />
Hydrostatic test at a pressure nor less than 150% of the shut off pressure is to be<br />
conducted for a duration of not less than 30 minutes and certificates of such tests is<br />
to be furnished.<br />
Radiography for impellers and casing shall be conducted and the certificates to be<br />
furnished.<br />
Pump performance tests of all pump sets for head, efficiency and power consumed<br />
in presence of the departments’ representative. The performance tests shall be<br />
conducted with the job motor and preferably with full column setting. The <strong>Bid</strong>der<br />
shall indicate with the confirmation from the pump manufacturer the maximum<br />
column setting, they can accommodate in their factory test bed. The minimum<br />
submergence required test shall be conducted to at least one pump set. Vibration<br />
analysis to all pumps and motors, are to be made in all load conditions both during<br />
shop testing as well as at site during commissioning. The duration of shop testing<br />
shall be not less than 8 hrs. continuous operation for each pump motor and<br />
temperature monitoring of both pump and motor shall be conducted. After<br />
performance test, at least one pump set shall be stripped off and internal<br />
components shall be checked as per choice of the departmental representative.<br />
The contractor shall give char 15 days notice to the purchaser/owner prior to<br />
witness testing at the manufacturer’s shop.<br />
DTS : Detailed Tender Specification. Page 193
Change language