Topics: ASHRAE/CMR
1: Where a refrigeration or air conditioning system is installed,
- A field inspection shall be made before it is put into service
- 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
- it shall not be operated below prescribed pressuers
2: Whoever owns/uses a refrigeration or air conditioning system covered by this code
- must notify the Department of Public Safety prior to starting the system
- shall be licensed by the Commonwealth of Massachusetts according to CMR 522
- shall make application for inspections to the Chief of Inspectors
- None of the above
3: Liquid level gauge glasses shall have automatic closing shut off valves, except Bull's eye or reflex type.
- True
- False
4: Institutional occupancy is
- a premise or that portion of a premise where large numbers of people congregate and from which occupants cannot quickly vacate the space.
- a premise or that portion of a premise from which, because they are disabled, debilitated, or confined, occupants cannot readily leave without the assistance of others.
- a premise or that portion of a premise where people transact business, receive personal service, or purchase food and other goods.
- None of the above
5: A restaurant is classified as a
- commercial occupancy
- public assembly occupancy
- large mercantile occupancy
- mixed occupancy
6: A Low-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 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 such that a leak of refrigerant from a failed connection will enter the occupied space
7: The gauge thickness required on a CO2 tank construction is
- 1/16"
- 5/16"
- 3/32"
- 1/8"
8: Large Mercantile occupancy is a premise or that portion of a premise where more than ____ persons congregate on levels above or below the street level to purchase personal merchandise.
- 100
- 250
- 400
- 350
9: Before you change the type of refrigerant in a refrigeration system, what three things must be done?
- you can't change refrigerants
- nothing must be done
- place sign, check for leaks, insulate
- make sure it's compatible, notify owner, notify A.H.J
10: What is Trichlorotrifluoromethane?
- R-12
- R-11
- R-113
- R-13
11: The Board of Boilers adopts by reference
- MSCA Code
- the MACS Pressure Vessel Code of Massachusetts
- Montreal Protocol Safety Code
- the 1997 ANSI/ASHRAE Safety Code
12: Which refrigerant class listed below is the most flammable?
- A-3
- B-2
- A-1
- C-3
13: Refrigerant piping crossing an open space that affords passageway in any building shall not be less than _____ feet above the floor unless piping is located against the ceiling.
- 9.00'
- 7.25'
- 7.00'
- 8'4"
14: Group A1 refrigerants over ____ pounds in a system must discharge to the atmosphere
- 1,000
- 110
- 330
- 6.6
15: A room having machinery but no flame producing apparatus permanently installed and operated is considered a
- Class M machinery room
- Class T machinery room
- Class A machinery room
- Class B machinery room
16: 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
17: A professional or office building would be considered what type of occupancy?
- commercial
- business
- mercantile
- public assembly
18: When must refrigeration system covered by the code be inspected?
- Not required
- Annually and when installed
- Annually
- Upon installation
19: Refrigerants shall be classified by
- requirements for commercial, industrial, and residential occupancies
- toxicity and flammability
- color codes
- maximum permissible quantities of each group
20: What is the refrigerant dichlorodifluoromethane?
- R-134A
- R-22
- R-123
- R-12
21: What should not (and can not) be located between a pressure imposing device and a pressure-limiting device?
- Stop valve
- Muffler
- Foot valve
- Moisture indicator
22: How many flammability classifications are refrigerants in?
- 3
- 5
- 7
- 2
23: Indirect systems using Group II refrigerants
- shall be used in refrigeration system in excess of 1,000 lbs
- shall have all refrigerant containing parts except piping, installed in a Class T machine room
- shall be used for mechanical equipment only
- shall be used in refrigeration system less than 1,000 lbs
24: What must be done to all doors and access points in duct work going through a mechanical room?
- Must be hindged
- Must be screwed shut
- Must be sealed and gasketed
- All of the above
25: Halogen refrigerants are corrosive to which type of metal?
- stainless steel
- copper
- magnesium
- black iron