GE EVT-Pro 2.0 Operation And Technical Manual page 5

SECTION 1
AUTHORIZED USE / EVT PRO 2.0
Scope:
I.
This instruction outlines recommended field testing procedures for establishing set pressure for
installed Pressure Relief Valves (PRV) in a field environment using the Electronic Valve Tester, EVT
®
PRO 2.0
II. Technician Responsibilities:
1. Prior to using the EVT PRO 2.0
equipment. Additionally, technicians should be GTC certified in the various classes for which
the work applies and on record as being up to date in their respective training. Technicians
should be familiar with:
2. Technicians should ensure that all test equipment; including pressure measuring devices,
have a current calibration traceable to the standards outlined in the NBIC Section 3,
4.5.2 (or other regional calibration standards) Equipment serial numbers and calibration dates
are recorded on the final test report. Technicians should provide current calibration
documents for customer review upon request.
3. Technicians should properly notify all associated plant personnel, and ensure that the required
PPE is worn, review of best practices for hazardous environments, and complete all site specific safety training
and LOTO required by the customer prior to conducting in-situ testing.
Ill.
Test Requirements:
4. Technicians should ensure that all documentation; JSA, work permits and/or safe work practices
are completed and discussed prior to beginning in-situ testing. This includes verifying that the
area where testing will occur is free of hazards, and has proper access and egress.
5. Technicians performing in-situ testing should ensure that there is direct communication between
themselves and plant operations throughout the entire testing event. Technicians also should
ensure that the system pressure and system stability are within the requirements established
by the GTC or Plant for in-situ testing. It is highly recommended that PRVs with an inlet
pressure less than 50% of set pressure or in excess of 90% of set pressure should not be tested.
NOTE: For dangers of testing below 50% or above 90% of set pressure, see warning in
Section 2 on page 3.
6. It is recommended that PRVs that display an indication of leaking should not be tested. If leakage
can be stopped in a safe manner, i.e., initial lift to remove trash from seats, minor adjustment
of the compression screw, etc., and the integrity of the PRV is not suspect, in-situ testing can
continue provided no additional hazards exist. Technicians should remain cognizant of any open
discharges and/or drains when conducting in-situ testing.
IV. EVT PRO 2.0® Inspection, Set-up, and Use:
7. Technicians should verify that the EVT PRO 2.0
are topped off, and cables and end connectors are not damaged. Ensure hardware, including
mounting bracket and adaptors, is complete and in good working order.
® Operations and Technical Manual (Rev 1.0 – 2016)
EVT PRO 2.0
®
a. PRV installation, operation, maintenance, and trouble-shooting;
b. GE procedures outlined in Assembly Instructions, Performance Test Instructions, and
Engineering Instructions, and;
c. The applicable manufacturer's testing/maintenance instructions for the PRV being
tested.
®
FIELD TEST (IN-SITU) TESTING PROCEEDURE
, all technicians should be trained and certified in the use of the
® is calibrated, batteries are charged, fluid levels
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