LP GAS MASTER QUALIFIER GAS LEAK DETECTION & CORROSION CONTROL EXAM QUESTIONS AND ANSWERS

LP GAS MASTER QUALIFIER GAS LEAK
DETECTION & CORROSION CONTROL
EXAM QUESTIONS AND ANSWERS
An acceptable level of cathodic protection is achieved by producing a voltage of
_______ with reference to a copper-copper sulfate half-cell.
A. +100 millivolts
B. -14 volts
C. -.30 volts
D. -.85 volts - Answer-D. -.85 volts

A cathodic protection system must be retested within _________ after the initial test.

A. 12-18 months
B. 7-10 business days
C. 24 months
D. 48 hours - Answer-A. 12-18 months

Cathodic protection systems failing a test shall be repaired as soon as practical, but not
more
than ________.
A. 12 months
B. 4 months
C. 180 days
D. 7-10 business days - Answer-C. 180 days
Customer leak calls must be responded to within _______ hours.

A. 12
B. 24
C. 72
D. 48 - Answer-B. 24

Customer leak calls must be responded to within ________ hours when emergency
personnel are involved.

A. 2
B. 4
C. 8
D. 1 - Answer-A. 2

Bar probe testing of underground LP-Gas systems is required every ________years.

A. 1