Topics: ASHRAE/CMR
1: Pressure relief valves shall be marked with the data from
- Section IV Division of the ASME Boiler & Pressure Code
- Section VIII 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
2: A pressure relief should be located at least _______ from windows and doors.
- 15'
- 20'
- 30'
- 25'
3: How much clearance do you need around the perimeter of electrical panels?
- 12"
- 18"
- 36"
- 24"
4: What kind of material can't be used on the outlet of a relief valve?
- Copper
- Stainless Steel
- PVC
- Aluminum
5: Most CFC's are
- inert but toxic
- inert
- toxic
- flammable
6: R-410A is classified as a ____ refrigerant on the safety matrix.
- B-2
- A-2
- B-1
- A-1
7: 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
- outside the machinery room
- compressor
- evaporator
8: What must be done to refrigerant pipes before being buried?
- Encased
- Certified
- Leaked checked
- Coated
9: Relief valves are rated in
- pounds of air per hour
- pounds of air per minute
- gallons of water per minute
- gallons of water per hour
10: Refrigeration piping before being buried shall be
- leak tested
- encased in pipe duct
- pressure tested
- All of the above
11: What refrigerant has zero ozone depletion
- HFC
- CFC
- HCFC
- None of the above
12: How many gallons of water per pound of ammonia do you need?
- 20
- 15
- 5
- 1
13: How many refrigerant classifications are there for flammability?
- 3
- 2
- 7
- 1
14: A class B2 refrigerant is considered
- non-toxic and highly flammable
- toxic and non-flammable
- toxic and somewhat flammable
- non-toxic and non-flammable
15: All serviceable components of a refrigeration system shall be provided with
- service manuals
- name plates with markings referring to pressure and temperature in accordance with ASME Boiler and Pressure Vessel Code
- manufactures instructions on start-up procedures
- safe access
16: When is the only time you can leave a service container attached to a system?
- Leaking system
- Recovery
- Charging
- Both b and c
17: Large mercantile occupancy is
- a premise or that portion of a premise where more than 1500 persons congregate on levels above or below street level to purchase personal merchandise
- a premise or that portion of a premise where more than 200 persons congregate on levels above or below street level to purchase personal merchandise
- a premise of that portion of a premise where more than 100 persons congregate on levels above of below street level to purchase personal merchandise.
- a premise of that portion of a premise where more than 50 persons congregate on levels above of below street level to purchase personal merchandise.
18: When an inspection is needed, how often must it be done?
- annually
- every 36 months
- every 24 months
- every 18 months
19: The ASHRAE Standard 34 requires what type of alarm for equipment rooms using HCFC-123?
- A group sensing
- phosgene gas sening
- refrigerant sensing
- CO Sensing
20: Field Inspections of refrigeration and A/C systems in Massachusetts shall be made by
- District Engineering Inspectors
- Commissioned Inspectors
- Master licensed Technician
- both a or b
21: Dual-pressure relief devices should be installed on
- vessels of 10 cubic feet or less
- vessels of 10 cubic feet or more
- vessels of 3 cubic feet or more
- vessels of 3 cubic feet or less
22: A 3-cubic foot receiver must have what type of relief valve?
- fusible plug
- relief valve
- rupture device
- none of the above
23: 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
- of Group B2 refrigerant shall be prohibited
- shall be prohibited
- shall not be prohibited
24: 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
- load-side of the contactor in
- breaker panel in
- first disconnect in
- 24 volt secondary side of the Class 2 transformer to the thermostat
25: Where a refrigeration or air conditioning system is installed,
- the form or certificate shall be authorized by the Department of Public Safety
- A field inspection shall be made before it is put into service
- it shall not be operated below prescribed pressuers
- The company who installed the system must notify the fire department in the jurisdiction where installed