Topics: ASHRAE/CMR
1: Most CFC's are
- flammable
- inert
- inert but toxic
- toxic
2: Setting a pressure relief device shall not exceed ___ of the design pressure
- 90%
- 100%
- 75%
- 80%
3: Who authorizes changes to the safety codes?
- Board of Boilers
- Person who pulled the permit
- Contractor who last serviced the system.
- Person in charge of the facility
4: _____ alloys shall not be used in contact with an halogenated refrigerants.
- Zinc
- Nickel
- Copper
- Magnesium
5: R-11 belongs to Group
- A-2
- A-1
- B-1
- B-3
6: pressure relief valves must discharge to the atmosphere at a location not less than 15 feet from ground level and ____ feet from any window, ventilation opening, or exits of buildings.
- 10
- 20
- 15
- 25
7: Ashrae states that the equipment on a building needs to conform to adjacent buildings classifications when within ____ feet from opening and intakes.
- 50
- 20
- 75
- 15
8: Name a CFC refrigerant(s):
- R-11
- R-12
- R-123
- both a & b
9: What must be done to refrigerant pipes before being buried?
- Certified
- Leaked checked
- Coated
- Encased
10: Pressure vessels nameplate markings must be compliant with the
- ASHRAE 34 Standards
- CMR-588 & CMR-528
- ASME Boiler and Pressure Vessel Code
- All of the Above
11: What is R-22?
- Chlorofluoromethane
- CCFCM
- Chlorodifluoromethane
- HFC
12: All electrical work done on refrigeration systems must comply with
- ASHREA-15 Section 9.2.1
- NEC and Massachusetts Modifications
- OSHA
- Department of Energy
13: When an inspection is needed, how often must it be done?
- every 36 months
- every 24 months
- annually
- every 18 months
14: Class 3 refrigerants are
- non-toxic
- non-flammable
- highly flammable
- toxic
15: Pressure vessels shall be provided with ___________in accordance with Section VIII of the ASME Boiler & Pressure Vessel Code
- over pressure protection as well as a temperature protection device
- Pressure vessels need no type of protection as long as it is hydrostatically tested every three months
- over pressure protection
- over pressure protection and a rupture disc
16: Doors communicating with outside from a mechanical room must be?
- Steel, approved, weather-stripped
- Self-closing, approved, fire door
- Self-closing, aligned, fire door
- Self-closing, wooden, fire door
17: Systems containing more than 110 pounds must have stop valves located at the
- compressor suction inlet
- compressor discharge outlet
- receiver inlet and outlet
- All of the above
18: What is not a requirement of a Class T machine room?
- Fire hose connected to the building fire protection system.
- Self-closing doors
- Tight fitting doors
- Automatic ventilation
19: What type of refrigerants are NOT flammable?
- CHC
- HFC
- HCFC
- All of the above
20: A relief valve discharge capacity is rated in
- PSIA
- temperature minus pounds of air per second divided by release rate squared
- Pounds of air per minute.
- PSIG
21: 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
22: What is a Category "M" fluid?
- A toxic fluid, which can produce serious irreversible harm to persons on breathing or bodily content
- Any fluid that exceeds 150 psig and has design temperatures over 366F
- A typical refrigerant used on newer air conditioning and heat pump systems
- 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
23: The ASHRAE Standard 34 requires what type of alarm for equipment rooms using HCFC-123?
- refrigerant sensing
- phosgene gas sening
- A group sensing
- CO Sensing
24: What was the main reason for enacting the no venting rule of July 1, 1992?
- Ozone depletion
- Green house effect
- Global warming potential
- All of the above
25: Pressure relief devices are marked with a ____________ signifying compliance with the ASME Boiler & Pressure Vessel Code.
- UM or UL
- UL and UM
- UV or UR
- UL and UR