Topics: ASHRAE/CMR
1: How far from the ground does a relief valve need to be?
- At least 25' above grade
- Not more than 3' above grade
- At least 20' above grade
- At least 15' above grade
2: It shall be the duty of the person in charge of the premises on which a refrigeration system containing more than ___ lbs of refrigerant is installed to provide a schematic drawing or panel giving directions for the operation of the system.
- 15
- 55
- 50
- 75
3: What must be done to all doors and access points in duct work going through a mechanical room?
- Must be hindged
- Must be screwed shut
- Must be sealed and gasketed
- All of the above
4: How many gallons of water do you need per pound of ammonia?
- 100
- 10
- 50
- 1
5: The Department that certifies the transportation of refrigerant is the
- EPO
- DOT
- RSES
- EPA
6: Before determining if a machinery room equipment is excluded from following Ashrae 15, you must determine how many pounds of refrigerant per _____ cubic feet?
- 100
- 1,000
- 10,000
- 100,000
7: Who authorizes changes to the safety codes?
- Person who pulled the permit
- Person in charge of the facility
- Board of Boilers
- Contractor who last serviced the system.
8: Which refrigerant was still able to be vented to the atmosphere after July 1, 1992?
- R-22
- R-113
- R-11
- R-12
9: What is a Category "M" fluid?
- A typical refrigerant used on newer air conditioning and heat pump systems
- A fluid which is nonflammable, nontoxic, not damaging to human tissues, does not exceed 150 psig, and the designed temperature is between -20F to 366F
- Any fluid that exceeds 150 psig and has design temperatures over 366F
- A toxic fluid, which can produce serious irreversible harm to persons on breathing or bodily content
10: Pressure relief valves shall be marked with the data from
- Section VIII Division of the ASME Boiler & Pressure Code
- Section IV Division of the ASME Boiler & Pressure Code
- Section I Division VIII of ASME Boiler & Pressure Code
- Section XIII Division of the ASME Boiler & Pressure Code
11: The Board of Boilers adopts by reference
- MSCA Code
- Montreal Protocol Safety Code
- the 1997 ANSI/ASHRAE Safety Code
- the MACS Pressure Vessel Code of Massachusetts
12: When systems are protected by a high pressure relief device, the compressor's pressure limiting device shall be set at or below ____ % of the operating pressure of the high side relief device.
- 100
- 80
- 90
- 110
13: What would be the classification of a church?
- Large mercantile
- Place of assembly
- Institutional
- Industrial
14: Which refrigerant replaced R-12?
- R-410A
- R-22
- R-407A
- R-134A
15: According to the 522 CMR Board of Boilers, refrigerant detectors, alarms, and the refrigeration mechanical room ventilating systems shall be tested
- quarterly
- bi-annually
- regularly
- annually
16: What section governs pressure vessels?
- Section ASHREA 34
- OSHA
- Section 8 ASHREA 15 ASME unfired
- Section 1 ASHREA 15 ASME fired
17: Name an HCFC refrigerant(s):
- R-22
- R-123
- R-11
- both a & b
18: What do you need to do when you install a new system?
- Add refrigerant
- Document the superheat and subcooling reading
- Have it inspected
- Insulate the suction line before you take a superheat reading
19: Which of the following is an inorganic refrigerant?
- R-22
- Ammonia
- Chlorofluorocarbons
- All of the above
20: What is R-22?
- Chlorofluoromethane
- CCFCM
- Chlorodifluoromethane
- HFC
21: Pressure vessels with an internal volume of 3 cubic feet or less
- do not need pressure relief protection
- shall use pressure relief devices
- shall use fusible plugs
- shall use pressure relief devices or fusible plugs
22: What does safe access mean?
- Well-lit exit signs
- A clear unobstructed path to the equipment and controls
- Locked doors
- OSHA approved
23: What refrigerant has zero ozone depletion
- HFC
- CFC
- HCFC
- None of the above
24: Who is permitted to access a refrigeration machine room?
- Authorized persons only
- Anyone, it's a completely safe area
- Contractors only
- Any employee
25: Setting a pressure relief device shall not exceed ___ of the design pressure
- 80%
- 100%
- 75%
- 90%