Question 166Refrigeration & AC - Assistant Engineer

The correct answer is A) 0 psig. The pressure in the part of a high-pressure refrigeration system about to be opened for a non-major repair should be brought to 0 psig to ensure the system is fully depressurized before being opened. This is a safety requirement to prevent the sudden release of high-pressure refrigerant, which could cause injury. The other options are incorrect because they do not represent a fully depressurized system, which is the necessary condition for safely performing non-major repairs on a high-pressure refrigeration system.