Topics: ASHRAE/CMR
1: A High-Probability System
- is a system highly likely to leak form a failed connection or component of such system
- is such that a leak of refrigerant from a failed connection will enter the occupied space
- is such that any leak will cause injury or death to anyone within a 100 square foot area
- is such that a leak of refrigerant from a failed connection will enter an unoccupied space
2: No open flames are allowed in the machinery room unless?
- Approved by the authorized person
- Only when combustion air is provided from outside of the machinery room
- Never can be allowed
- Approved by the installing contractor
3: What would be the classification for Stop & Shop grocery store?
- Large mercantile
- Industrial
- Place of assembly
- Instituional
4: Who authorizes changes to the safety codes?
- Person in charge of the facility
- Contractor who last serviced the system.
- Board of Boilers
- Person who pulled the permit
5: A professional or office building would be considered what type of occupancy?
- business
- public assembly
- commercial
- mercantile
6: A 3-cubic foot receiver must have what type of relief valve?
- fusible plug
- relief valve
- rupture device
- none of the above
7: Where a refrigeration or air conditioning system is installed,
- it shall not be operated below prescribed pressuers
- the form or certificate shall be authorized by the Department of Public Safety
- The company who installed the system must notify the fire department in the jurisdiction where installed
- A field inspection shall be made before it is put into service
8: All machine rooms must be outfitted with a detector that _______?
- activates an audible alarm
- activates a visual alarm
- starts the ventilation system
- All of the above
9: B3 refrigerants are considered
- non-toxic but non-flammable
- toxic but non-flammable
- toxic and highly flammable
- non-toxic but flammable
10: How much clearance do you need around the perimeter of electrical panels?
- 12"
- 36"
- 18"
- 24"
11: Doors communicating with outside from a mechanical room must be?
- Self-closing, aligned, fire door
- Steel, approved, weather-stripped
- Self-closing, approved, fire door
- Self-closing, wooden, fire door
12: A restaurant is classified as a
- large mercantile occupancy
- public assembly occupancy
- mixed occupancy
- commercial occupancy
13: Joints in piping for refrigeration containing parts must withstand temperatures of ___?
- 1000F
- 700F
- 800F
- 600F
14: Methyl Chloride is a halogenated refrigerant and should not come in contact with
- aluminum
- zinc
- magnesium
- all of the above
15: Before you change the type of refrigerant in a refrigeration system, what three things must be done?
- Nothing must be done
- Make sure its compatible, notify owner, and notify AHJ.
- you can never change refrigerants
- Place sign, check for leaks, and insulate suction line
16: When air is ducted through a machine room that services occupied space, What must be done?
- Insulated and cross broke
- Flanged and gasketed
- Ducted and sealed
- Welded and seamed.
17: A Low-Probability System
- 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
- is such that a leak of refrigerant from a failed connection will enter the occupied space
18: What refrigerant is an inorganic compound?
- R-22
- Ammonia
- R-132A
- R-410A
19: Which refrigerant(s) is an HFC?
- R-22
- R-410A
- R-502
- All of the above
20: Ammonia belongs to Group
- B-1
- A-1
- B-2
- A-2
21: When can recovered refrigerants be reused?
- They can't
- Only when used in original owner's equipment
- Only if used in 30 days of recovery
- None of the above
22: A High-Probablity system
- is such that a leak of refrigerant from failed connections will enter the unoccupied 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 from a failed connection or component of such system
- is such that a leak of refrigerant from failed connections will enter the occupied space
23: A premise or that portion of a premise where people transact business, receive personal service, or purchase foods, other goods is considered a
- public assembly occupancy.
- commercial occupancy
- business occupancy
- mercantile occupancy
24: What is Trichlorotrifluoromethane?
- R-13
- R-11
- R-12
- R-113
25: Refrigerants shall be classified by
- maximum permissible quantities of each group
- color codes
- requirements for commercial, industrial, and residential occupancies
- toxicity and flammability