RSES Code Compliance 2

Question 1

Under ASHRAE 15, what is the maximum allowable refrigerant concentration limit (RCL) used for occupied spaces?

Accepted Answer

The ATEL or ODL, whichever is lower

Answer

ASHRAE 15 uses the lower of the Acute Toxicity Exposure Limit (ATEL) or Oxygen Depletion Limit (ODL) as the RCL for occupied spaces.

Question 2

What does Section 608 of the Clean Air Act require technicians to do before disposing of appliances containing refrigerants?

Accepted Answer

Recover the refrigerant prior to disposal

Answer

Section 608 mandates that refrigerant must be recovered before any appliance is disposed of to prevent venting.

Question 3

Which EPA certification type covers technicians who service small appliances containing 5 lbs or less of refrigerant?

Accepted Answer

Type I

Answer

EPA Section 608 Type I certification covers technicians servicing small appliances with 5 lbs or less of refrigerant.

Question 4

According to the International Mechanical Code, refrigeration machinery rooms must be provided with what minimum ventilation?

Accepted Answer

Continuous mechanical ventilation at 0.5 CFM/sqft plus emergency purge at 1 CFM/sqft

Answer

The IMC requires a machinery room to have continuous ventilation of 0.5 CFM/sqft and emergency ventilation of 1 CFM/sqft activated by a detector.

Question 5

Under UL 207, pressure relief devices on refrigerant receivers must be set to open at no more than what percentage of the vessel's design pressure?

Accepted Answer

100%

Answer

UL 207 requires pressure relief devices to be set to open at no more than 100% of the vessel's design (maximum allowable working) pressure.

(RSES) Refrigeration Service Engineers Society Certification Practice Test