2020 Tech Report May-June

Task # 1.: Preparing Float Switch Testing

ACTION

COMMENT

5.

Ask your supervisor or facility contact to notify all affected departments and per- sonnel including: Facility personnel, con- tractors, and visitors. Prohibit all vehicular and pedestrian traf- fic in the vicinity of operation. Re-familiarize yourself with the location of escape routes, eyewash, and shower stations.

Facility personnel, contractors, and visitors should be trained on the dangers associated with ammonia, including early exposure detec- tion techniques.

6.

NOTE: Portable rinse bottles may be neces- sary depending on the location of the valve control groups. Per the Hazard Assessment for Refrigeration Operators/Technicians. NOTE: If you are using a portable lift, you must have current certification on the type of lift to be used. Perform a ladder inspection after set- up, but prior to use. Do not use facility equip- ment without authorization. Refer to the equipment’s corresponding SOP, your supervisor, or consult your facility contact.

7.

8.

Don required clothing and PPE.

9.

Place ladder (if required) and tie off per OSHA and facility requirements.

10.

Perform visual inspection of the associ- ated portion of the system to determine if the equipment to be tested is currently operational. Perform visual inspection of the associ- ated portion of the system to determine if the liquid levels are normal and the loads on the vessel consistent. Determine the correct testing procedures utilizing the Task Flow Diagram. Continue to the appropriate Task.

11.

It is vital that levels stay consistent during the inspection. As part of the inspection, liquid control will become erratic.

12.

The valve group types covered in this Mainte- nance Procedure are: • Task # 2.a.: Float Switch Testing on Vessels with Drain Valve Configurations • Task # 2.b.: Float Switch Testing on Liquid Make-Up Systems Without a Drain Valve

RETA TECHNICAL REPORT PAGE 5