Topics: ASHRAE/CMR
1: According to the 522 CMR Board of Boilers, refrigerant detectors, alarms, and the refrigeration mechanical room ventilating systems shall be tested
- annually
- quarterly
- bi-annually
- regularly
2: Refrigerant systems containing Group I refrigerants can be installed in or on public stairways.
- True
- False
3: Large mercantile occupancy is
- a premise or that portion of a premise where more than 200 persons congregate on levels above or below street level to purchase personal merchandise
- a premise of that portion of a premise where more than 100 persons congregate on levels above of below street level to purchase personal merchandise.
- a premise of that portion of a premise where more than 50 persons congregate on levels above of below street level to purchase personal merchandise.
- a premise or that portion of a premise where more than 1500 persons congregate on levels above or below street level to purchase personal merchandise
4: When is the only time you can leave a service container attached to a system?
- Leaking system
- Recovery
- Charging
- Both b and c
5: 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
6: R-12. R-22, and R-40 are considered Group I refrigerants.
- True
- False
7: Name a CFC refrigerant(s):
- R-11
- R-12
- R-123
- both a & b
8: When releasing a hydrogenated hydrocarbon refrigerant to the atmosphere, ample ventilation must be provided and
- gas masks must be worn
- explosion precautions must be taken
- the owner shall be informed
- no flames shall be permitted
9: Fusible plugs must have what marked on them?
- Melting temperature in F
- Melting temperature in C
- Opening pressure
- All of the above
10: Ammonia can come in contact with _______ ?
- Aluminum
- Copper
- Copper tubing
- Brass
11: A relief valve shall be located at least ___ above grade.
- 36'
- 10'
- 15'
- 25'
12: Pressure-limiting device isn't required on a factory-sealed system containing less than ____ lbs.
- 18
- 22
- 50
- 33
13: When a refrigerating machinery room is used, the emergency procedures shall be posted
- outside the room, immediately adjacent to each door
- on a conspicuous card located near the evaporator
- on a conspicuous card located near the compressor
- inside the room, immediately adjacent to each door
14: The 522 CMR 9.00 has adopted for reference ASHRAE ____
- III
- 10
- 15
- 25
15: _____ and its alloys are suitable for use with ammonia systems.
- Aluminum
- Copper
- Magnesium
- Zinc
16: Most CFC's are
- toxic
- flammable
- inert
- inert but toxic
17: What is an egress?
- A code violation
- An escape route
- An entrance or exit
- A valve put on the low side of the system to prevent frosting
18: What section of ASHRAE-15 governs pressure vessels?
- Section 7 ASHRAE-15 ASME VIII fired
- Section 9 ASHRAE-15 ASME VIII unfired
- OSHA
- Section 6 ASHRAE-34 ASME VIII unfired
19: What was the main reason for enacting the no venting rule of July 1, 1992?
- Ozone depletion
- Green house effect
- Global warming potential
- All of the above
20: What type refrigerant is NOT ozone depleting?
- CFC
- HCFC
- HFC
- Halon
21: Pressure vessels nameplate markings must be compliant with the
- ASHRAE 34 Standards
- CMR-588 & CMR-528
- ASME Boiler and Pressure Vessel Code
- All of the Above
22: What kind of material can't be used on the outlet of a relief valve?
- PVC
- Aluminum
- Copper
- Stainless Steel
23: When must refrigeration system covered by the code be inspected?
- Upon installation
- Not required
- Annually
- Annually and when installed
24: What type of copper is not permitted on refrigeration systems?
- Type M
- Type L
- Type N
- Type K
25: A pressure-limiting device isn't required on a factory-sealed system containing less than ____ lbs.
- 50
- 22
- 66
- 25