2020 Tech Report May-June

Task # 2.a.: Performing Float Switch Testing on Vessels with Drain Valve Configurations

ACTION

COMMENT

NOTE: Valve “C” is the purge/drain valve on the level column. NOTE: Valve “C” is the purge/drain valve on the level column. NOTE: Connection “O” is the outlet end of the transfer hose. Refer to the Transfer Hose Diagram on Page 3 of this Maintenance Procedure if you have any questions.

10.

Confirm that Valve “C” on the level col- umn is closed. Remove the plug from Valve “C” on the level column. Attach Connection “O” on the transfer hose to Valve “C” on the level column.

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Slowly open Valve “C” on the level col- umn. Allow the transfer hose to pressurize. Slowly close Valve “C” on the level col- umn. Confirm that the pressure as observed on the gauge attached to Valve “X” is less than the pressure from the Source Valve’s equipment. If a small ammonia leak is observed, the source of the leak should be in- vestigated and the leak repaired. If a large leak occurs, abort the op- eration and contact your supervisor or facility contact. When the leak check has been satisfac- torily completed, continue as follows: Check for ammonia odor.

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The Source Valve’s equipment pressure may be observed if a gauge valve is present on the discharge of the equipment. Consult your supervisor, facility contact, or the equipment’s correspond SOP if you have any questions.

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RETA TECHNICAL REPORT PAGE 8