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ASHRAE STD 15 & 34

Safety Standard for Refrigeration Systems

inactive
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Organization: ASHRAE
Publication Date: 23 June 2017
Status: inactive
Page Count: 6
scope:

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 higher-flammability refrigerants is restricted only by the total refrigerant charge in the self-contained system (limited to 0.331 lb [150 g] of Group A3 refrigerants).

• Defines "low-probability pumps" and provides requirements pertaining to their use. Recognition of low-probability pumps acknowledges the superior leak resistance of these pumps and encourages their use to increase safety. The approach is modeled after current allowances for low-probability systems. Because low-probability systems are inherently more resistant to atmospheric releases than high-probability systems, Standard 15 permits more widespread use of low-probability systems. With respect to pumps, experience has shown that pump leaks are typically associated with failed seals on rotating (dynamic) parts, which can result in events ranging from a simple nuisance release to a hazardous condition requiring an emergency response. This addendum encourages the use of liquid pumps that are hermetically sealed or similar in lieu of pumps that rely on dynamic seals to contain refrigerant. This change is consistent with the 2018 IMC (changes proposed) and with IIAR 2.

• Eliminates a requirement for industrial occupancies and refrigerated rooms pertaining to floor area per occupant While the requirement has been in place for some time, upon re-examination by the committee, there is no logical reason for this section to establish a maximum occupancy limit based on providing a minimum floor area per occupant simply because someone is in a refrigerated area. This change is consistent with the 2018 IMC (changes proposed) and IIAR 2.

Note: In this addendum, changes to the current standard are indicated in the text by underlining (for additions) and strikethrough (for deletions)

Document History

February 4, 2021
SAFETY STANDARD FOR REFRIGERATION SYSTEMS
A description is not available for this item.
October 30, 2020
Safety Standard for Refrigeration Systems
FOREWORD Addendum j modifies ANSI/ASHRAE Standard 15 by replacing the terms “flammable” and “nonflammable” with refrigerant class when referencing refrigerants classified as A1 or B1 by ANSI/ASHRAE...
October 30, 2020
Safety Standard for Refrigeration Systems
FOREWORD Addendum k modifies the existing listing requirement in ANSI/ASHRAE Standard 15 by clarifying the acceptable product safety listing standards. Note: In this addendum, changes to the...
October 21, 2020
Safety Standard for Refrigeration Systems
A description is not available for this item.
September 30, 2020
Safety Standard for Refrigeration Systems
FOREWORD Addendum f inserts a new appendix that will be used to add clarifying, nonmandatory reference information for the purpose of improving ease of use, and moves mandatory normative reference...
September 1, 2020
Safety Standard for Refrigeration Systems
FOREWORD Addendum c proposes changes to allow the use of equipment using small amounts of non-A1 refrigerants only if they are listed to appropriate product safety standards. The proposal is...
July 31, 2020
Safety Standard for Refrigeration Systems
A description is not available for this item.
February 2, 2020
SAFETY STANDARD FOR REFRIGERATION SYSTEMS
Background: ASHRAE STD 15-2019 Section 9.3.1.1 states: 9.3.1.1 Pressure vessels having inside dimensions of 6 in. (152 mm) or less shall be a. listed either individually or as part of an assembly...
February 1, 2020
Safety Standard for Refrigeration Systems
FOREWORD This addendum provides capacity factors for overpressure protection of pressure vessels and pressure equipment for a number of new refrigerants and expands the coverage of capacity factors...
February 1, 2020
Safety Standard for Refrigeration Systems
FOREWORD This addendum changes the definition of “listed” and adds the term “labeled” to Section 3.1. Note: In this addendum, changes to the current standard are indicated in the text by...
August 20, 2019
Safety Standard for Refrigeration Systems
A description is not available for this item.
February 14, 2019
SAFETY STANDARD FOR REFRIGERATION SYSTEMS
A description is not available for this item.
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,...
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.
ASHRAE STD 15 & 34
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
Safety Standard for Refrigeration Systems
A description is not available for this item.
December 7, 2016
Safety Standard for Refrigeration Systems /Designation and Safety Classification of Refrigerants
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,...
June 29, 2016
Safety Standard for Refrigeration Systems
A description is not available for this item.
June 29, 2016
Safety Standard for Refrigeration Systems
A description is not available for this item.
June 29, 2016
Safety Standard for Refrigeration Systems
FOREWORD Addendum c gives requirements for carbon dioxide (CO2) refrigeration systems and modifies the requirements for machinery rooms. The addendum modifies a definition in and adds new...
June 29, 2016
Safety Standard for Refrigeration Systems
A description is not available for this item.
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