Microsoft Word - SOP - Hands-On Sessions

Rev. 1 - Final

Hands-On - Purity Test

STANDARD OPERATING PROCEDURE

NAME:

Testing R717 (Anhydrous Ammonia) for water content

SCOPE:

The refrigeration grade anhydrous ammonia specification for water content is a maximum of 100 ppm. This procedure details the steps to be taken during the opening (line break) of any valve for taking a sample of anhydrous ammonia which may need to be performed on an ammonia refrigeration system to test for water content. Could affect any valve connected to the ammonia refrigeration system that can be opened to atmosphere. It is typical for water contamination to involve the low-pressure side of the refrigeration system. A minimum of two (2) trained refrigeration technician is required to perform this procedure. The training can be from on-the-job experience and classroom instruction. It is recommended for two (2) people be present during extraction of a sample.

EQUIPMENT:

OPERATOR REQUIREMENTS:

PPE Minimum requirement:

Tools/Equipment required:

Have within reach: Full-face respirator equipped with NH 3 cartridges

sampling flask with vented cap hose or stinger water bath container pipe wrenches Teflon® tape & paste water source nearby clear path to shower/eye wash ammonia monitor industrial fan/room ventilation

Wear: neoprene or nitrile gloves

goggles & face shield or respirator to be used whenever opening any part of the system.

Procedure : Testing R717 (Anhydrous Ammonia) for water content Reviewed: 10/26/2023

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