ISOLATION OF MECHANICAL
EQUIPMENT QUESTIONS AND
ANSWERS WITH SOLUTIONS 2024/25
When isolating a steam turbine driven centrifugal pump
you should first
a) open the breaker
b) close the turbine exhaust steam valve
c) close the pump suction valve
d) close the high pressure steam supply valve
e) open the turbine casing drain - ANSWER d
When isolating an electric motor driven pump you should first
a) close the pump suction valve
b) open the motor breaker
c) ensure the pump is drained
d) close the high pressure steam supply valve
e) close the pump discharge valve - ANSWER b
Blind flanges used for isolation
a) can be prepared as work progresses
b) must be prepared ahead of time
c) do not need a tag number
d) must be constructed of .3 cm #11 US gauge steel
e) are only required when there are no isolation valves - ANSWER b
EQUIPMENT QUESTIONS AND
ANSWERS WITH SOLUTIONS 2024/25
When isolating a steam turbine driven centrifugal pump
you should first
a) open the breaker
b) close the turbine exhaust steam valve
c) close the pump suction valve
d) close the high pressure steam supply valve
e) open the turbine casing drain - ANSWER d
When isolating an electric motor driven pump you should first
a) close the pump suction valve
b) open the motor breaker
c) ensure the pump is drained
d) close the high pressure steam supply valve
e) close the pump discharge valve - ANSWER b
Blind flanges used for isolation
a) can be prepared as work progresses
b) must be prepared ahead of time
c) do not need a tag number
d) must be constructed of .3 cm #11 US gauge steel
e) are only required when there are no isolation valves - ANSWER b
