RSES Code Compliance 4

Question 1

What is the maximum refrigerant charge allowed in a self-contained air-conditioning system installed in a public corridor under ASHRAE 15?

Accepted Answer

It is based on the room volume and the refrigerant's RCL

Answer

ASHRAE 15 limits refrigerant charge in occupied spaces based on the room volume divided by the refrigerant concentration limit (RCL).

Question 2

Under EPA Section 608, which action is specifically prohibited when servicing refrigerant-containing appliances?

Accepted Answer

Knowingly venting refrigerants to the atmosphere

Answer

Section 608 explicitly prohibits knowingly venting Class I and II refrigerants to the atmosphere during maintenance, service, repair, or disposal.

Question 3

What is the primary purpose of a fusible plug installed on a refrigerant receiver?

Accepted Answer

To relieve pressure by melting and releasing refrigerant if exposed to fire

Answer

A fusible plug melts at a specified temperature when exposed to fire, allowing refrigerant to escape and preventing vessel rupture from pressure buildup.

Question 4

Under the International Building Code, what minimum clearance is required around refrigeration machinery for service access?

Accepted Answer

36 inches

Answer

The IBC and IMC require a minimum of 36 inches of clear working space around refrigeration machinery to allow safe service access.

Question 5

A technician finds that a customer's R-22 system is leaking. Under current EPA rules, what must the technician do?

Accepted Answer

Recover the R-22 and repair the leak; R-22 is still legal to use in existing equipment

Answer

R-22 is still legal to use in existing equipment with reclaimed or recovered refrigerant; the technician must recover and repair per Section 608 rules.

(RSES) Refrigeration Service Engineers Society Certification Practice Test

(RSES) Refrigeration Service Engineers Society Certification Practice Test

RSES Code Compliance 4