Topics: ASHRAE/CMR
1: Pressure relief devices are marked with a ____________ signifying compliance with the ASME Boiler & Pressure Vessel Code.
- UL and UM
- UM or UL
- UL and UR
- UV or UR
2: Class 3 refrigerants are
- highly flammable
- non-toxic
- non-flammable
- toxic
3: A person holding a license as a refrigeration technician may connect or disconnect for the purpose of installation, repair, or replacement, any electrical device or control to be a part of a refrigeration or air conditioning system, from the
- 24 volt secondary side of the Class 2 transformer to the thermostat
- breaker panel in
- first disconnect in
- load-side of the contactor in
4: What refrigerant were phased out in 2004?
- R-11
- R-12
- R-22
- R-134a
5: The test pressure applied to the high side of each factory-assembled refrigerating system shall be at least equal to the design pressure of
- the aggregate of the high side and low side
- the low side
- the high side
- 2.5 times the design pressure
6: Who approves containers for refrigerants?
- D.O.E
- E.P.A
- D.O.T
- D.O.D
7: Ashrae states that the equipment on a building needs to conform to adjacent buildings classifications when within ____ feet from opening and intakes.
- 20
- 15
- 50
- 75
8: When this is installed on the high side of a system, it must be capable of reading 1.2 times the design pressure (ASHRAE 15 9.11.3)
- Pressure gauge
- Temperature gauge
- Sight glass gauge
- All of the above
9: All electrical work done on refrigeration systems must comply with
- ASHREA-15 Section 9.2.1
- NEC and Massachusetts Modifications
- Department of Energy
- OSHA
10: Low temperature systems should have what?
- High pour point
- Low pour point
- High viscosity
- None of the above
11: R-123 belongs to Group
- B-3
- B-2
- A-3
- B-1
12: Who authorizes changes to the safety codes?
- Person who pulled the permit
- Contractor who last serviced the system.
- Person in charge of the facility
- Board of Boilers
13: Ammonia can come in contact with _______ ?
- Aluminum
- Copper
- Brass
- Copper tubing
14: When an inspection is needed, how often must it be done?
- every 36 months
- every 18 months
- annually
- every 24 months
15: When a receiver is greater than 3 cubic feet but less than 10 cubic feed, what is the minimum relief device required?
- fusible plug
- relief valve
- rupture disc
- all of the above
16: 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
17: What happens after your initial inspection of a pressure vessel?
- There is a temporary shut-down until a final inspection can be performed.
- 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
18: What is a Category "M" fluid?
- A toxic fluid, which can produce serious irreversible harm to persons on breathing or bodily content
- 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
- A typical refrigerant used on newer air conditioning and heat pump systems
- Any fluid that exceeds 150 psig and has design temperatures over 366F
19: When a refrigeration or air conditioning system is installed
- 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
- it shall be approved by the owner for proper operation.
20: Which of the following are considered inorganic refrigerants?
- R-717 and R-718
- 410A and R-407C
- R-500 and R-502
- None of the above
21: When testing systems using non-positive displacement compressors, the entire system shall be considered for test purposes as the low side.
- True
- False
22: The Board of Boilers adopts by reference
- Montreal Protocol Safety Code
- the MACS Pressure Vessel Code of Massachusetts
- MSCA Code
- the 1997 ANSI/ASHRAE Safety Code
23: What kind of material can't be used on the outlet of a relief valve?
- Copper
- Aluminum
- PVC
- Stainless Steel
24: A factory-sealed system containing less than 22lbs. of Group A1 refrigerant
- does not require a pressure-limiting device
- shall be inspected by the Boiler of Inspectors bi-annually
- shall have a pressure limiting device installed on the high side of the system
- shall have a pressure limiting device and a pressure relief valve installed
25: R-12. R-22, and R-40 are considered Group I refrigerants.
- True
- False