What happens when the compressor discharge pressure falls below the pressure in the discharge line?
A. Forward flow stops and gas from the discharge line flows backward.
B. Forward flow increases and overcomes the line pressure.
C. Upstream line pressure drops as well as the process temperature.
D. The compressor will make loud noises.
A. Correct. Once compressor discharge pressure falls below the pressure in the discharge line, forward flow stops and gas from the discharge line flows backward toward the suction.
B. Incorrect. Once compressor discharge pressure falls below the pressure in the discharge line, forward flow stops and gas from the discharge line flows backward toward the suction.
C. Incorrect. Once compressor discharge pressure falls below the pressure in the discharge line, forward flow stops and gas from the discharge line flows backward toward the suction.
D. Incorrect. Once compressor discharge pressure falls below the pressure in the discharge line, forward flow stops and gas from the discharge line flows backward toward the suction.
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