Topics: ASHRAE/CMR
1: Class 3 refrigerants are
- non-flammable
- non-toxic
- highly flammable
- toxic
2: 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
3: Evaporators located ____inches of a heating coil shall be equipped whit a pressure relief device.
- 24
- 15
- 10
- 18
4: According to the 522 CMR Board of Boilers, refrigerant detectors, alarms, and the refrigeration mechanical room ventilating systems shall be tested
- annually
- regularly
- bi-annually
- quarterly
5: Name three things that must be done when changing refrigeration lubricant?
- Make sure it's compatible, notify owner, notify AHJ
- Place sign, check for leaks, insulate
- You can't change lubricants.
- Nothing must be done
6: Fusible plugs must have what marked on them?
- Melting temperature in F
- Melting temperature in C
- Opening pressure
- All of the above
7: Who authorizes changes to the safety codes?
- Board of Boilers
- Person in charge of the facility
- Contractor who last serviced the system.
- Person who pulled the permit
8: A High-Probability 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
- is a system highly likely to leak form a failed connection or component of such system
- is such that a leak of refrigerant from a failed connection will enter an unoccupied space
9: Indirect systems using Group II refrigerants
- shall be used in refrigeration system in excess of 1,000 lbs
- shall be used in refrigeration system less than 1,000 lbs
- shall be used for mechanical equipment only
- shall have all refrigerant containing parts except piping, installed in a Class T machine room
10: A premise where large numbers of people congregate and from which occupants can not quickly vacate the space is considered
- mixed occupancy
- commercial occupancy
- institutional occupancy
- public assembly occupancy
11: When a refrigeration or air conditioning system is installed
- it shall be approved by the owner for proper operation.
- the form of certificate shall be authorized by the Department of Pubic safety
- it shall not be operated below prescribed pressures
- a field inspection shall be made before it is put into service
12: 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
13: copper and its alloys shall not be used in contact with _____ except as a component of bronze alloys for bearing or other non-refrigerant containing uses.
- HCFC-123
- CFC-11
- ammonia
- Lithium bromide
14: What type refrigerant is NOT ozone depleting?
- HCFC
- HFC
- Halon
- CFC
15: A restaurant is classified as a
- commercial occupancy
- public assembly occupancy
- mixed occupancy
- large mercantile occupancy
16: A pressure-limiting device isn't required on a factory-sealed system containing less than ____ lbs.
- 50
- 25
- 66
- 22
17: Trichlorofluoromethane is the name of what refrigerant?
- R-12
- R-502
- R-113
- R-11
18: What do you need to do when you install a new system?
- Document the superheat and subcooling reading
- Add refrigerant
- Insulate the suction line before you take a superheat reading
- Have it inspected
19: How many flammability classifications are refrigerants in?
- 3
- 5
- 7
- 2
20: What pipe can not be used for refrigeration?
- L
- M
- K
- N
21: Pressure vessels with an internal volume of 10 cubic feet or more
- shall use fusible plugs
- shall use rupture discs or duel pressure relief valves
- shall use pressure relief devices
- shall use pressure relief devices or fusible plugs
22: Emergency shutdown procedures, including precautions to be observed in case of a breakdown or leak over 55 lbs of refrigerant charge, shall be displayed on a conspicuous card located as near as possible to the
- boiler
- evaporator
- compressor
- outside the machinery room
23: 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 and a rupture disc
- over pressure protection as well as a temperature protection device
- over pressure protection
24: How many gallons of water do you need per pound of ammonia?
- 1
- 50
- 10
- 100
25: Who approves containers for refrigerants?
- D.O.T
- D.O.D
- D.O.E
- E.P.A