standard specification for erection tender - GAIL

8.4.7 Wiring shall conform to the following color code:
24 VDC power : +ve Red -ve Black
I/O signal : +ve Black -ve White
Chassis earth : Green w/ yellow stripe
Instrument earth : Green
9.0 INSPECTION AND TESTING
9.1 GENERAL
PURCHASER may visit the VENDOR’s plant at any time and witness all testing and quality
control procedures that may take place during fabrication and final testing.
9.2 PRODUCTION AND CONFORMANCE TESTS
9.3.1 The VENDOR shall perform flow computer component and system testing to ensure high
reliability and proper operation. The VENDOR shall document all testing and shall deliver
such documentation to PURCHASER prior to the commencement of witnessed testing.
9.3.2 The assembled flow computer equipment shall be final tested before shipment in
compliance with an approved test plan provided by the VENDOR. The test plan shall be
submitted to PURCHASER at least 30 days before starting the final test.
9.3.3 The test shall include at least the following:
a. The VENDOR shall demonstrate the operation of all diagnostic and maintenance
tests provided with the flow computer. Errors shall be simulated to demonstrate its
capability to detect and report errors.
b. Various external and internal fault conditions shall be introduced during the test to
ensure correct, controlled and safe system response. Such faults shall be
representative of the system configuration but shall include power
failure/restoration, instrument failure, communication path failure (where
applicable), and other faults likely to be encountered.
c. Demonstration that each output signal is transmitted to its Output terminal and each
signal received at each input terminal is functioning properly.
d. Demonstration that every input and output circuit is properly Interconnected and
sequenced and is functioning properly.
e. Demonstration of compliance with environmental and EMI/RFI
f. Prevention requirements stated herein.
9.3 WITNESSED TESTING
GAIL (INDIA) LTD
NEW DELHI
STANDARD SPECIFICATION
SPECIFICATION REV-0
FOR
FLOW COMPUTERS S-08-02-026 Page 23 of 29
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