2020 Tech Report May-June

Task # 2.b.: Performing Float Switch Testing on Liquid Make-Up Systems With- out a Drain Valve

ACTION

COMMENT

NOTE: Because all compressors associated with the target vessel were stopped, the trans- fer system may not be successful at transfer- ring liquid. NOTE: Compressors should NOT restart au- tomatically without a reset signal. Silence alarms and reset shutdown condition by using the appropriate SOP for the affected equipment. Refer to the SOP ORSO (Overall Refrigeration System Operation) for a list of equipment SOP’s available.

8.

Turn on and remove the isolation from the transfer system if one is equipped.

9.

Reset the alarms and utilize the reset to restart the refrigeration system if re- quired. Do NOT restart the compressors at this time.

10. Check the ammonia level in level column. Verify that the level in the vessel is below the high level shutdown level.

RETA TECHNICAL REPORT PAGE 16