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ASHRAE - 34

Designation and Safety Classification of Refrigerants

active
Organization: ASHRAE
Publication Date: 1 January 2019
Status: active
Page Count: 52
scope:

This standard provides an unambiguous system for numbering refrigerants and assigning composition designating prefixes for refrigerants. Safety classifications based on toxicity and flammability data are included along with refrigerant concentration limits for the refrigerants.

This standard does not imply endorsement or concurrence that individual refrigerant blends are suitable for any particular application.

This standard is intended to establish a simple means of referring to common refrigerants instead of using the chemical name, formula, or trade name. It establishes a uniform system for assigning reference numbers, safety classifications, and refrigerant concentration limits to refrigerants. The standard also identifies requirements to apply for designations and safety classifications for refrigerants and to determine refrigerant concentration limits.

Document History

August 20, 2019
Safety Standard for Refrigeration Systems
A description is not available for this item.
January 12, 2019
Designation and Safety Classification of Refrigerants
A description is not available for this item.
January 12, 2019
Designation and Safety Classification of Refrigerants
A description is not available for this item.
January 12, 2019
Designation and Safety Classification of Refrigerants
A description is not available for this item.
January 12, 2019
Designation and Safety Classification of Refrigerants
A description is not available for this item.
15
January 1, 2019
Safety Standard for Refrigeration Systems
This standard establishes safeguards for life, limb, health, and property and prescribes safety requirements. This standard applies to a. the design, construction, test, installation, operation,...
34
January 1, 2019
Designation and Safety Classification of Refrigerants
This standard provides an unambiguous system for numbering refrigerants and assigning composition designating prefixes for refrigerants. Safety classifications based on toxicity and flammability data...
June 23, 2018
Safety Standard for Refrigeration Systems
A description is not available for this item.
June 23, 2018
Safety Standard for Refrigeration Systems
A description is not available for this item.
January 21, 2018
SAFETY STANDARD FOR REFRIGERATION SYSTEMS
A description is not available for this item.
January 20, 2018
Designation and Safety Classification of Refrigerants
FOREWORD Addendum n makes several changes with the purpose of aligning the toxicity classification procedure to be based on the nominal formulation of the blend. Note: In this addendum, changes to...
January 20, 2018
Designation and Safety Classification of Refrigerants
FOREWORD Addendum l adds the zeotropic refrigerant blend R-407I to Tables 4-2 and D-2. Note: In this addendum, changes to the current standard are indicated in the text by underlining (for...
January 20, 2018
Designation and Safety Classification of Refrigerants
FOREWORD Addendum j adds the zeotropic refrigerant blend R-460C to Tables 4-2 and D-2. Note: In this addendum, changes to the current standard are indicated in the text by underlining (for...
January 20, 2018
Designation and Safety Classification of Refrigerants
FOREWORD Addendum m adds the zeotropic refrigerant blend R-464A to Tables 4-2 and D-2. Note: In this addendum, changes to the current standard are indicated in the text by underlining (for...
January 20, 2018
Designation and Safety Classification of Refrigerants
FOREWORD Addendum k adds the zeotropic refrigerant blend R-464A to Tables 4-2 and D-2. Note: In this addendum, changes to the current standard are indicated in the text by underlining (for...
October 3, 2017
Designation and Safety Classification of Refrigerants
FOREWORD This addendum adds the single-component refrigerant R- 1224yd(Z) to Tables 4-1, D-1, and E-1. Note: In this addendum, changes to the current standard are indicated in the text by...
October 3, 2017
Designation and Safety Classification of Refrigerants
FOREWORD This addendum adds the single-component refrigerant R- 1132a to Tables 4-1, D-1, and E-1. Note: In this addendum, changes to the current standard are indicated in the text by underlining...
June 23, 2017
Safety Standard for Refrigeration Systems
FOREWORD Addendum b makes several relatively small changes to the standard. • Removes a restriction on higher-flammability refrigerants where used in small, portable-unit systems. The use of...
June 23, 2017
Safety Standard for Refrigeration Systems
FOREWORD ASHRAE Standard 34-2010 revised the toxicity classification definition to use “Occupational Exposure Limit” (OEL) in place of “Threshold Limit Value-Time-Weighted Average” (TLV-TWA) and...
January 29, 2017
Safety Standard for Refrigeration Systems
Background: The refrigerant concentration as described in Section 7.2 “shall not exceed” the ANSI/ASHRAE Standard 34 Refrigerant Concentration Limits (RCLs). The total leaked refrigerant mass...
January 28, 2017
Designation and Safety Classification of Refrigerants
FOREWORD This addendum adds the zeotropic refrigerant blend R-460B to Tables 4-2 and D-2. Note: In this addendum, changes to the current standard are indicated in the text by underlining (for...
January 28, 2017
Designation and Safety Classification of Refrigerants
FOREWORD This addendum adds the zeotropic refrigerant blend R-460B to Tables 4-2 and D-2. Note: In this addendum, changes to the current standard are indicated in the text by underlining (for...
January 28, 2017
Safety Standard for Refrigeration Systems
A description is not available for this item.
January 28, 2017
Designation and Safety Classification of Refrigerants
FOREWORD This addendum adds the zeotropic refrigerant blend R-460A to Tables 4-2 and D-2. Note: In this addendum, changes to the current standard are indicated in the text by underlining (for...
January 28, 2017
Designation and Safety Classification of Refrigerants
FOREWORD This addendum adds the zeotropic refrigerant blend R-460A to Tables 4-2 and D-2. Note: In this addendum, changes to the current standard are indicated in the text by underlining (for...

References

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