2020 Tech Report Jan-Feb

Task # 3.b.: Returning a Configuration “B” Control Group to Normal Operation

ACTION

COMMENT

1.

Depending upon the conditions which required shutdown, the following permits may require completion before setting up the control group for startup. Pre-Startup Safety Review Form Pre-Charging Checklist Hot Work Permits Management of Change Form

The facility’s Ammonia Refrigeration Compli- ance Program, your supervisor or your facility contact may be able to supply additional infor- mation on these forms and programs. In addition, pressure tests may be required if modifications have been made requiring tests. If you have any questions, consult your super- visor or facility contact. Based upon the maintenance that may have been performed while this unit was shut down, portions of this procedure may not be required, provided the unit has remained under the con- trol of the Refrigeration Operator / Technician. Any items which may have been adjusted or modified must be reviewed during setup. If the unit has not remained under the control of the Refrigeration Operator / Technician, the com- plete setup procedure must be utilized. If you have any questions, consult your supervisor or facility contact. Facility personnel, contractors, and visitors should be trained on the dangers associated with ammonia, including early exposure de- tection techniques.

2.

Ask your supervisor or facility contact to notify all affected departments and per- sonnel including: Facility personnel, con- tractors, and visitors. Confirm that the following valves are closed, locked, and tagged out per the facility Lockout / Tagout Program:

3.

Valve “A” Valve “D”

4.

Confirm that the following automatic valve’s manual operating stem is in the “MANUAL OPEN” operating position. Valve “B” Regulator Confirm a known good pressure gauge is installed on Valve “C.”

5.

The pressure indicated on the gauge attached to Valve “C” should read 0 PSIG.

RETA TECHNICAL REPORT PAGE 21