Microsoft Word - SOP - Hands-On Sessions

Rev. 2 -Final

Ammonia Charging

PART A:

STEP NUMBER

SAFETY AND HEALTH HAZARDS/ STEPS TO AVOID DEVIATION Line breaks must only be performed by authorized and trained refrigeration technicians.

DESCRIPTION

1

Ensure that appropriate PPE is worn at all times and a full-face respirator equipped with NH 3 cartridges is always within reach when working with ammonia. Notify/brief and obtain sign off of the Facility Emergency Coordinator or Supervisor before initiating the system charging. When the delivery truck arrives, position the truck near system, turn the truck off and chock the wheels. Setup an area which limits access to only those persons involved in the delivery. The driver and the facility person should check paperwork to make sure the amount from the shipper and the amount ordered are the same? Also, check and verify grade of the ammonia on the truck. Check the ammonia hose line on the ammonia delivery truck to make sure the green-lined hose is stamped with an expiration date or there is a test date tag. Also, check the condition of hose (no cuts). Make sure the driver has an automatic pump supply shut-off system. Locate the emergency control valves and review the shutdown procedure. This is a remove sending unit but still may have a lanyard and manual valve. Don safety equipment (gloves, goggles or face shield or APR, radio, ammonia monitor). Secure storm drainage system to prevent threat of contamination from a potential accidental release. A qualified service technician or construction personnel can now work on the system. Locate nearest safety shower, eye wash stations and emergency exits.

2

Obtain plant SOPs, line break permits, safety meeting documentation.

3

Test operation of eyewash stations.

4

Before actual line breaking occurs, cordon off work area from any traffic if necessary.

5

6

Get a copy of the delivery drivers hose inspection log.

7

8

9

and tagout.

10

Procedure: Ammonia Charging Reviewed: 10/26/2023

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