Topics: ASHRAE/CMR
1: What must be done to refrigerant pipes before being buried?
- Certified
- Leaked checked
- Encased
- Coated
2: A pressure relief should be located at least _______ from windows and doors.
- 30'
- 20'
- 15'
- 25'
3: What refrigerant has zero ozone depletion
- HFC
- CFC
- HCFC
- None of the above
4: Who is permitted to access a refrigeration machine room?
- Any employee
- Authorized persons only
- Anyone, it's a completely safe area
- Contractors only
5: According to ASHRAE Standard-15 9.8 Positive Displacement Compressor Protection, the pressure-relief device discharge into
- the low-pressure side of the system
- the high side of the system
- the liquid receiver
- both a and c are correct
6: The total amount of refrigerant stored in a machinery room in all containers not provided with relief valves shall not exceed
- 55 lbs
- 500 lbs
- 660 lbs
- 330 lbs
7: How many refrigerant classifications are there for flammability?
- 1
- 2
- 3
- 7
8: How many groups of refrigerants are there?
- 7
- 3
- 5
- 1
9: What refrigerant doesn't have to be classified?
- R-717
- R-422A
- R-134A
- R-718
10: What type of relief valve is used on low pressure centrifugal compressor systems?
- Spring-loaded relief valve
- Rupture disc
- Purge relief
- None of the above
11: What would be the classification for Stop & Shop grocery store?
- Industrial
- Instituional
- Place of assembly
- Large mercantile
12: Joints in piping for refrigeration containing parts must withstand temperatures of ___?
- 800F
- 600F
- 1000F
- 700F
13: Before determining if a machinery room equipment is excluded from following Ashrae 15, you must determine how many pounds of refrigerant per _____ cubic feet?
- 1,000
- 100
- 100,000
- 10,000
14: R-22 is considered a(n)
- HCFCH
- HCFC
- HFC
- CFC
15: Liquid level gauges must be provided with what?
- A red line
- A relief valve
- A low level mark
- Automatic shut-offs
16: A total of all group A-2,B-2, A-3, and B-3 refrigerants shall not exceed ____ lb in the occupied areas and machinery rooms of institutional occupancies.
- 550
- 50
- 100
- 350
17: R-22 falls under which safety classification?
- B-1
- B-2
- A-2
- A-1
18: Low temperature systems should have what?
- High pour point
- Low pour point
- High viscosity
- None of the above
19: What should not (and can not) be located between a pressure imposing device and a pressure-limiting device?
- Stop valve
- Muffler
- Moisture indicator
- Foot valve
20: What happens after your initial inspection of a pressure vessel?
- Inspector leaves a metal tag with a certification listed on it
- Notify the AHJ to let them know that the system been inspected
- Notify the Fire Marshal that the system has been inspected and approved
- There is a temporary shut-down until a final inspection can be performed.
21: How far from the window does a relief valve need to be according to ASHRAE-15?
- There is no minimum for relief valve and windows.
- At least 30'
- At least 20'
- At least 40'
22: Large Mercantile occupancy is a premise or that portion of a premise where more than ____ persons congregate on levels above or below the street level to purchase personal merchandise.
- 400
- 100
- 250
- 350
23: Direct systems using Group II refrigerants
- shall be allowed to be used for human comfort.
- shall not be used for air condition for human comfort
- shall be installed per instruction of the AHJ
- shall be installed in Class T machinery rooms
24: Liquid level gauges shall have _____________ with one exception being that of the liquid level gauge bull’s eye type.
- color-coded glass to determine type of refrigerant
- moisture indicators
- automatic closing shut-off valves
- All of the above
25: A relief valve shall be located at least ___ above grade.
- 10'
- 15'
- 25'
- 36'