Module H

Question 1

True or False: You commonly purge sour gas compressors with sweet gas, which eliminates any danger during the overhaul.

Answer 1

False: pockets of sour gas can be trapped inside

Question 2

Failure to operate the unloading clearance pockets while purging the compressor could result in ________

Answer 2

the release of toxic gasses released during the overhaul

Question 3

True or false: An organizational meeting by everyone involved to review the hazards and safety concerns is one of the pre-job requirements of an overhaul

Answer 3

True

Question 4

You require a work permit if the job requires the use of ___________________

Answer 4

a torch or tool that could cause a spark

Question 5

You require a work permit before starting an overhaul on a compressor that compresses _______________

Answer 5

sweet gas

Question 6

True or false: Failure to depressurize could cause a valve cover to be blown off once you remove the valve cover nuts

Answer 6

True

Question 7

True or false: After you complete the overhaul, you should have someone else remove your safety lock

Answer 7

False: each person removes his own lock

Question 8

What is the value of keeping the work area clean and orderly?

Answer 8

Reduces the risk of hazards caused by clutter

Question 9

True or false: Hydrogen sulphide gas has a distinct rotten egg smell that is noticeable in any concentration

Answer 9

False: Higher concentrations can kill your sense of smell

Question 10

Before starting up a compressor after an overhaul, you should ______________ in order to ensure that it rotates freely

Question 11

While barring a compressor over, you should have it ___________

Question 12

True or false: Hydraulic jacks are an acceptable means of blocking a flywheel or crankshaft from rotating during an overhaul

Answer 12

False: Only solid blocking is acceptable

Question 13

You should never use ____________________ to clean compressor parts or surfaces

Answer 13

gasoline or diesel fuel

Question 14

Why should you flush the lubrication system after a major overhaul?

Answer 14

To prevent forcing dirt and contamination into the main bearings, you must flush all external oil lines before connecting them to the main oil header

Question 15

Why should you remove all air from the piping and the compressor before start-up if the compressor is going to be compressing a combustible gas?

Answer 15

Because of explosion danger

Question 16

A major cause of compressor-to-driver misalignment is ___________________

Answer 16

piping strain

Question 17

True or false: You do not need to prime the lubrication system with oil if you use positive displacement oil pumps

Answer 17

False: you must prime the system to prevent vapor lock

Question 18

Why should you check for proper rotation if a three-phase motor drives the compressor?

Answer 18

to ensure proper rotation of lube oil pump

Question 19

What four items are listed in operator logs?

Answer 19

1. Temperature changes
2. Pressure differentials
3. changes in sound
4. changes in vibration