Topics: ASHRAE/CMR
1: 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
- ammonia
- Lithium bromide
- CFC-11
2: Refrigeration devices shall be equipped with a ____ to protect against unexpected pressure due to a malfunction or fire?
- Temperature limiter device
- Relief valve
- Circuit Breaker
- T&P device
3: What would be the classification of a prison?
- Institutional
- Large mercantile
- Place of assembly
- Industrial
4: An example of direct system is
- rooftop unit
- chiller
- absorber
- none of the above
5: A premise or that portion of a premise where people transact business, receive personal service, or purchase foods, other goods is considered a
- business occupancy
- commercial occupancy
- mercantile occupancy
- public assembly occupancy.
6: When is the only time you can leave a service container attached to a system?
- Leaking system
- Recovery
- Charging
- Both b and c
7: How many refrigerant classifications are there for toxicity?
- 5
- 3
- 1
- 2
8: 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
- licensed technician
- welder qualified
- licensed welder
- competent welder
9: Large mercantile occupancy is
- 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 50 persons congregate on levels above of 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 or that portion of a premise where more than 1500 persons congregate on levels above or below street level to purchase personal merchandise
10: 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
11: What is the minimum height refrigeration piping should be placed against walls?
- 72"
- 7.25'
- 6'
- Ceiling height
12: What refrigerant were phased out in 2004?
- R-12
- R-22
- R-134a
- R-11
13: Doors communicating with outside from a mechanical room must be?
- Self-closing, aligned, fire door
- Self-closing, approved, fire door
- Steel, approved, weather-stripped
- Self-closing, wooden, fire door
14: Liquid level gauges shall have _____________ with one exception being that of the liquid level gauge bull’s eye type.
- color-coded glass to determine type of refrigerant
- moisture indicators
- automatic closing shut-off valves
- All of the above
15: Pressure vessels shall be provided with ___________in accordance with Section VIII of the ASME Boiler & Pressure Vessel Code
- over pressure protection and a rupture disc
- Pressure vessels need no type of protection as long as it is hydrostatically tested every three months
- over pressure protection as well as a temperature protection device
- over pressure protection
16: A Low-Probability System
- is such that a leak of refrigerant from a failed connection will enter the occupied space
- is such that a leak of refrigerant from a failed connection can not enter the occupied space
- is such that any leak will cause injury or death to anyone within a 100 square foot area
- is a system highly likely to leak form a failed connection or component of such system
17: A pressure-limiting device isn't required on a factory-sealed system containing less than ____ lbs.
- 25
- 22
- 66
- 50
18: System design pressures must take into consideration, not only, pressures found during normal operation but also what?
- When it's cold out
- When there is a malfunction on the high side
- When its warm out
- All of the above
19: What must be done to refrigerant pipes before being buried?
- Coated
- Leaked checked
- Encased
- Certified
20: When must refrigeration system covered by the code be inspected?
- Not required
- Upon installation
- Annually and when installed
- Annually
21: Joints in piping for refrigeration containing parts must withstand temperatures of ___?
- 700F
- 800F
- 600F
- 1000F
22: How far from the window does a relief valve need to be according to ASHRAE-15?
- At least 40'
- There is no minimum for relief valve and windows.
- At least 30'
- At least 20'
23: What is an egress?
- A code violation
- An escape route
- A valve put on the low side of the system to prevent frosting
- An entrance or exit
24: Setting a pressure relief device shall not exceed ___ of the design pressure
- 100%
- 75%
- 90%
- 80%
25: What would be the classification for Stop & Shop grocery store?
- Industrial
- Large mercantile
- Place of assembly
- Instituional