Topics: ASHRAE/CMR
1: Who authorizes changes to the safety codes?
- Board of Boilers
- Contractor who last serviced the system.
- Person who pulled the permit
- Person in charge of the facility
2: Refrigerant piping crossing an open space that affords passageway in any building shall not be less than _____ feet above the floor unless piping is located against the ceiling.
- 7.25'
- 7.00'
- 9.00'
- 8'4"
3: A class B1 refrigerant is considered
- non-toxic and non-flammable
- toxic but non-flammable
- non-toxic but highly flammable
- toxic and somewhat flammable
4: Direct systems using Group II refrigerants
- shall not be used for air condition for human comfort
- shall be allowed to be used for human comfort.
- shall be installed in Class T machinery rooms
- shall be installed per instruction of the AHJ
5: Evaporators located ____inches of a heating coil shall be equipped whit a pressure relief device.
- 24
- 18
- 10
- 15
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?
- 100,000
- 1,000
- 100
- 10,000
7: What refrigerant has zero ozone depletion
- HFC
- CFC
- HCFC
- None of the above
8: How many groups of refrigerants are there?
- 7
- 1
- 5
- 3
9: Liquid shall not occupy more than ____ of the volume when the temperature of the refrigerant is 90F.
- 90%
- 80%
- 75%
- 100%
10: R-410A is classified as a ____ refrigerant on the safety matrix.
- A-1
- B-2
- A-2
- B-1
11: Ammonia shall be discharged into ____________ or a tank containing one gallon of water for every pound of ammonia.
- the atmosphere
- a de-pressurized recovery tank with a silver top and yellow bottom
- a tank containing two pounds of a water/lithium bromide mix for every pound of ammonia
- All of the above
12: Which refrigerant(s) is an HFC?
- R-22
- R-410A
- R-502
- All of the above
13: R-22 is classified as a ____ refrigerant on the safety matrix.
- A-2
- B-1
- B-2
- A-1
14: The total amount of refrigerant stored in a machinery room in all containers not provided with relief valves shall not exceed
- 55 lbs
- 550 lbs
- 330 lbs.
- 660 lbs
15: The Board of Boilers adopts by reference
- the MACS Pressure Vessel Code of Massachusetts
- the 1997 ANSI/ASHRAE Safety Code
- MSCA Code
- Montreal Protocol Safety Code
16: What would be the classification of a prison?
- Industrial
- Institutional
- Large mercantile
- Place of assembly
17: Trichlorofluoromethane is the name of what refrigerant?
- R-12
- R-502
- R-113
- R-11
18: Machinery rooms must be vented to ______?
- outdoors
- unoccupied spaces
- basement
- neutralizing tank
19: Group A3 refrigerants have a ______ flammability rating than Group B1 refrigerants
- the same
- there is no Group B1 refrigerants
- lower
- higher
20: An example of direct system is
- rooftop unit
- chiller
- absorber
- none of the above
21: A “U” or “UM” marking a on a nameplate of a pressure vessels signifies compliance with Section VIII of
- the ASME Boiler and Pressure Vessel Code
- Section 11.3.1.5 ASHRAE 15 Standard
- the ANSI Standard 10.7.2
- both the ANSI Standard 10.7.2 and ASHRAE 15 Standard 11.3.1.5
22: The 522 CMR 9.00 has adopted for reference ASHRAE ____
- 10
- 15
- III
- 25
23: How many different groups of refrigerants are there?
- 11
- 3
- 15
- 7
24: What would be the classification for Stop & Shop grocery store?
- Instituional
- Place of assembly
- Industrial
- Large mercantile
25: Before you change the type of refrigerant in a refrigeration system, what three things must be done?
- nothing must be done
- place sign, check for leaks, insulate
- make sure it's compatible, notify owner, notify A.H.J
- you can't change refrigerants