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Volume-II of IV - GAIL

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e) Pipeline under protected<br />

f) Auto-mode failure<br />

It shall be possible to switch <strong>of</strong>f all the indication lamps by a single switch.<br />

6.4 Following metering shall be provided on the CPPSM :<br />

a) Output voltage (Preferably Digital)<br />

b) Output current (Preferably Digital)<br />

c) Digital voltmeter to measure PSP (Set and actual through a selector<br />

switch for all the reference cells) (Alternatively analog voltmeter<br />

with 0.5 accuracy class may be accepted).<br />

d) Input voltage and current.<br />

6.5 If specified in data sheet, CPPSM shall incorporate provision for remote<br />

monitoring <strong>of</strong> CPPSM through SCADA system as below :<br />

a) Potential free contacts for the following :<br />

- All the reference cells failed<br />

- Pipe line overprotected<br />

- Pipe line under protected<br />

- System in manual mode<br />

- System in auto-mode<br />

b) 4 to 20 mA isolated signal for the following<br />

7.0 PAINTING<br />

- PSP (- 4V to 0V)<br />

The sheet steel used for fabrication shall be thoroughly cleaned and<br />

degreased to remove mill scale, rust, grease and dirt. Fabricated<br />

structures shall be pickled and then rinsed to remove any trace <strong>of</strong> acid.<br />

D:\old data\FATEH\MP Region\Kailaras\Tender RFQ\TCP&PCP\CPPSM-spec.doc Page 7 <strong>of</strong> 9

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