Topics: ASHRAE/CMR
1: Defined process piping by code CMR (528)
- Any piping that conveys a solid, liquid or gas that is not part of the plumbing or fire protection system
- Any piping in an industrial space
- Any piping in an industrial or commercial space
- All of the above
2: Machinery rooms must be vented to ______?
- basement
- unoccupied spaces
- neutralizing tank
- outdoors
3: What type refrigerant is NOT ozone depleting?
- HCFC
- HFC
- Halon
- CFC
4: Name a CFC refrigerant(s):
- R-11
- R-12
- R-123
- both a & b
5: Dual-pressure relief devices should be installed on
- vessels of 3 cubic feet or less
- vessels of 10 cubic feet or less
- vessels of 10 cubic feet or more
- vessels of 3 cubic feet or more
6: Evaporators within 18" of a heating coil must be equipped with a
- high limit control
- pressure relief device
- zone valve
- low limit control
7: Refrigerant systems containing Group I refrigerants can be installed in or on public stairways.
- True
- False
8: According to the 522 CMR Board of Boilers, refrigerant detectors, alarms, and the refrigeration mechanical room ventilating systems shall be tested
- regularly
- quarterly
- annually
- bi-annually
9: Which refrigerant class listed below is the most flammable?
- A-3
- B-2
- C-3
- A-1
10: A Low-Probability System
- is such that a leak of refrigerant from a failed connection can not enter the occupied space
- is a system highly likely to leak form a failed connection or component of such system
- is such that any leak will cause injury or death to anyone within a 100 square foot area
- is such that a leak of refrigerant from a failed connection will enter the occupied space
11: The total amount of refrigerant stored in a machinery room in all containers not provided with relief valves shall not exceed
- 660 lbs
- 330 lbs.
- 550 lbs
- 55 lbs
12: R-22 is classified as a ____ refrigerant on the safety matrix.
- B-1
- A-2
- A-1
- B-2
13: 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
14: _____ alloys shall not be used in contact with an halogenated refrigerants.
- Nickel
- Magnesium
- Zinc
- Copper
15: When is the only time you can leave a service container attached to a system?
- Leaking system
- Recovery
- Charging
- Both b and c
16: Ammonia can come in contact with _______ ?
- Copper tubing
- Copper
- Aluminum
- Brass
17: Pressure vessels shall be provided with ___________in accordance with Section VIII of the ASME Boiler & Pressure Vessel Code
- Pressure vessels need no type of protection as long as it is hydrostatically tested every three months
- over pressure protection as well as a temperature protection device
- over pressure protection
- over pressure protection and a rupture disc
18: What do you need to do when you install a new system?
- Have it inspected
- Insulate the suction line before you take a superheat reading
- Add refrigerant
- Document the superheat and subcooling reading
19: Walls and doors of a machinery room shall be at least _____ hour(s) fire rated.
- 1
- 2
- 5
- 3
20: The Department that certifies the transportation of refrigerant is the
- EPA
- EPO
- RSES
- DOT
21: Fusible plugs shall not be used with pressure vessels of
- 3 cubic feet or more
- 3 cubic feet or less
- 15 cubic feet or more
- 15 square feet or less
22: Class A refrigerants are considered
- non-toxic
- toxic
- non-flammable
- flammable
23: 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.
- 110
- 100
- 80
- 90
24: When a refrigeration or air conditioning system is installed
- the form of certificate shall be authorized by the Department of Pubic safety
- it shall be approved by the owner for proper operation.
- it shall not be operated below prescribed pressures
- a field inspection shall be made before it is put into service
25: Pipe identification labels are required when the system contains more than
- 55 lbs
- 110 lbs
- 120 lbs
- 65 lbs