ASHRAE/CMR code Prep Quiz

Topics: ASHRAE/CMR

Quiz Result Settings

1: Evaporators within 18" of a heating coil must be equipped with a

  • low limit control
  • pressure relief device
  • high limit control
  • zone valve

2: Can a R22 line set be reused for a 410A system and if it can be reused, what must be done to it?

  • Flush with ammonia
  • Flush with RX-11
  • Flush with R-718
  • Flush with R-11

3: What refrigerant were phased out in 2004?

  • R-12
  • R-11
  • R-22
  • R-134a

4: What is R-290’s ASHRAE safety code?

  • B1
  • A2
  • A3
  • B2

5: What does safe access mean?

  • OSHA approved
  • Locked doors
  • A clear unobstructed path to the equipment and controls
  • Well-lit exit signs

6: Group A1 refrigerants over ____ pounds in a system must discharge to the atmosphere

  • 330
  • 1,000
  • 110
  • 6.6

7: The Board of Boilers adopts by reference

  • MSCA Code
  • Montreal Protocol Safety Code
  • the 1997 ANSI/ASHRAE Safety Code
  • the MACS Pressure Vessel Code of Massachusetts

8: Dual-pressure relief devices should be installed on

  • vessels of 10 cubic feet or less
  • vessels of 3 cubic feet or less
  • vessels of 3 cubic feet or more
  • vessels of 10 cubic feet or more

9: 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

10: The color code of a tank of ammonia is

  • lavender
  • white
  • light green
  • silver

11: What section governs pressure vessels?

  • Section 1 ASHREA 15 ASME fired
  • Section ASHREA 34
  • OSHA
  • Section 8 ASHREA 15 ASME unfired

12: Which occupancy can ammonia be used in?

  • commercial
  • depends on the quantity of freon
  • industrial
  • redifential

13: All welding done on any refrigeration system or piping covered by 522 CMR 9.00 shall be performed by a according to Section IX of the ASME code

  • welder qualified
  • licensed welder
  • licensed technician
  • competent welder

14: Pressure vessels having an inside diameter of 6” or less shall be protected by

  • a pressure relief device
  • Pressure vessels having an inside diameter of 6” or less need no such protection unless otherwise specified
  • a fusible plug
  • either a fusible plug or a pressure relief device

15: Joints in piping for refrigeration containing parts must withstand temperatures of ___?

  • 600F
  • 1000F
  • 800F
  • 700F

16: What type of relief valve is used on low pressure centrifugal compressor systems?

  • Spring-loaded relief valve
  • Rupture disc
  • Purge relief
  • None of the above

17: Name an HCFC refrigerant(s):

  • R-22
  • R-123
  • R-11
  • both a & b

18: All electrical work done on refrigeration systems must comply with

  • OSHA
  • ASHREA-15 Section 9.2.1
  • NEC and Massachusetts Modifications
  • Department of Energy

19: What do you need to do when you install a new system?

  • Have it inspected
  • Add refrigerant
  • Insulate the suction line before you take a superheat reading
  • Document the superheat and subcooling reading

20: Pressure relief valves shall be marked with the data from

  • Section VIII Division of the ASME Boiler & Pressure Code
  • Section IV Division of the ASME Boiler & Pressure Code
  • Section XIII Division of the ASME Boiler & Pressure Code
  • Section I Division VIII of ASME Boiler & Pressure Code

21: Large vessels containing refrigerant ______________________ from using two or more pressure-relief devices in parallel to obtain the required capacity.

  • containing R-11, R-123 & R-717 exclusively shall not be prohibited
  • shall not be prohibited
  • of Group B2 refrigerant shall be prohibited
  • shall be prohibited

22: Refrigeration devices shall be equipped with a ____ to protect against unexpected pressure due to a malfunction or fire?

  • Temperature limiter device
  • Relief valve
  • T&P device
  • Circuit Breaker

23: Stop valves shall not be permitted between the system and the

  • relief valve
  • condenser
  • service valve
  • bleed valve

24: Direct systems using Group II refrigerants

  • shall be installed in Class T machinery rooms
  • shall not be used for air condition for human comfort
  • shall be installed per instruction of the AHJ
  • shall be allowed to be used for human comfort.

25: What refrigerant has zero ozone depletion

  • HFC
  • CFC
  • HCFC
  • None of the above