After replacing a gauge, the isolation valve should be ________.
A) removed and replaced with a hydraulic valve
B) replaced every time, in case it has undetectable internal damage
C) opened very carefully to prevent damaging the gauge with sudden pressure
D) opened fully to check calibration of the gauge and quickly restore pressure to the line
[Ques. 2] How can you determine what PPE should be used with any particular chemical product?
A) Call the EPA B) Read the SDS form for that product
C) Ask another worker D) Ask the foreman
[Ques. 3] In general, the first step when removing an actuator/operator from the system is to ________.
A) disconnect the actuator/operator from the mount
B) disconnect the inlet and outlet fluid lines
C) clean the actuator/operator around the fluid line connections
D) note the mounting arrangement
[Ques. 4] When reassembling a valve, handle ________ carefully to avoid nicking or damaging them.
A) flanges and gaskets B) seals and O-rings
C) solenoids and electrical leads D) locks and tags
[Ques. 5] When working in a confined space where concentrations of harmful substances are very high, why should atmosphere-supplying respirators be worn?
A) To supply clean breathing air from a compressed air source
B) To enable asphyxiation to occur in a very short time
C) To circulate odorless, tasteless, invisible refrigerants
D) To purify air of harmful dust, mist, metal, fumes, and vapors
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