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Identification Guide for Ammonia Refrigeration
Piping
How To Make Right to Know Labels
for Ammonia Refrigeration Piping
1. Use Arrows to Indicate
the Direction of Flow in the Pipe.
2. Use the Following
Abbreviations to Properly Identify System Components.
|
BD |
Booster
Discharge |
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CD |
Condenser |
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DS |
Defrost
Condensate |
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ES |
Economizer
Suction |
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HGD |
Hot
Gas Defrost |
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HPL |
High
Pressure Liquid |
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HSD |
High
Stage Discharge |
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HSS |
High
Stage Suction |
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HTRL |
High
Temperature Recirculated Liquid |
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HTRS |
High
Temperature Recirculated Suction |
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LTRL |
Low
Temperature Recirculated Liquid |
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LTRS |
Low
Temperature Recirculated Suction |
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LIC |
Liquid
Injection Cooling |
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LSS |
Low
Stage Suction |
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RV |
Relief
Vent |
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TSR |
Thermosyphon
Return |
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TSS |
Thermosyphon
Supply |
3. Indicate Whether
the Refrigerant is a Liquid, Vapor, or Both.
|
LIQ
- Orange Color Band Indicates Liquid State |
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VAP
- Blue Color Band Indicates Vapor State |
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Use
both color bands if both liquid and vapor may be present. |
4. Print "Ammonia"
in Black Letters on a Yellow Background.
5. Indicate Whether
Internal Pipe Pressure is High or Low.
|
High
- Red Color Band Indicates High Pressure |
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Low
- Green Color Band Indicates Low Pressure |
This guide is
intended for general information purposes only. This guide is not
a substitute for review of applicable government regulations and
standards.
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