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Academy
Steamfitting & Pipefitting
Steamfitter/Pipefitter Red Seal Certification
Pressure Testing, Inspection & Codes
Knowledge Check
Pressure Testing, Inspection & Codes
Knowledge Check
Knowledge Check
1 / 9
A single closed valve is considered
A
Never positive isolation - valves can leak
B
Adequate for all maintenance activities
C
Positive isolation for maintenance
D
Sufficient if the valve is a gate valve
Check Answer
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