Inspection and Maintenance of
Ammonia Refrigeration Systems Exam
2025 Questions and Answers
What should be done with EPCS crossover valves and isolation valves annually? -
ANSWER-They should be inspected and tested to verify proper operation.
What should written procedures for EPCS include? - ANSWER-They should
describe the operation of the EPCS and emphasize maintaining isolation valves in
the full open position unless maintenance is being performed.
What is 'seep' in the context of relief valves? - ANSWER-Seep is nuisance
refrigerant loss due to pressure differential conditions across the valve or dirt and
debris at the seat, measured in bubbles per minute.
What can cause relief valves to seep at larger tolerances? - ANSWER-Seep can
occur when relief valves are stored or left in operation for a long period of time.
What is a recommended pressure to maintain on a relief valve to prevent seep? -
ANSWER-Maintain a pressure of 90% or less of the rated relief valve pressure
setting.
....COPYRIGHT ©️ 2025 ALL RIGHTS RESERVED...TRUSTED & VERIFIED 1
Ammonia Refrigeration Systems Exam
2025 Questions and Answers
What should be done with EPCS crossover valves and isolation valves annually? -
ANSWER-They should be inspected and tested to verify proper operation.
What should written procedures for EPCS include? - ANSWER-They should
describe the operation of the EPCS and emphasize maintaining isolation valves in
the full open position unless maintenance is being performed.
What is 'seep' in the context of relief valves? - ANSWER-Seep is nuisance
refrigerant loss due to pressure differential conditions across the valve or dirt and
debris at the seat, measured in bubbles per minute.
What can cause relief valves to seep at larger tolerances? - ANSWER-Seep can
occur when relief valves are stored or left in operation for a long period of time.
What is a recommended pressure to maintain on a relief valve to prevent seep? -
ANSWER-Maintain a pressure of 90% or less of the rated relief valve pressure
setting.
....COPYRIGHT ©️ 2025 ALL RIGHTS RESERVED...TRUSTED & VERIFIED 1
