ASHRAE - 15 2013 INT 4
Safety Standard for Refrigeration Systems
inactive
| Organization: | ASHRAE |
| Publication Date: | 29 January 2017 |
| Status: | inactive |
| Page Count: | 1 |
scope:
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 divided by the volume of the occupied, contaminated room (plus uncontaminated spaces connected by "permanent openings or HVAC ducts" per Section 7.3) is held at or below the RCL. Subsequent to a leak, the refrigerant concentration in the occupied, contaminated room into which the leak occurs could exceed the RCL. Concentrations equalize between the contaminated room and connected uncontaminated spaces at a rate determined by the rate of refrigerant transfer. Standard 34 RCLs are carefully selected to "reduce the risks of acute toxicity, asphyxiation, and flammability hazards", and exceeding an RCL elevates the risk. RCLs are sometimes controlled by Acute Toxicity Exposure Limit (ATEL), which can be associated with a time duration. One source suggests that a 30 minute maximum exposure at the RCL would not be inconsistent with underlying assumptions in Standard 15.
Document History
January 27, 2022
Safety Standard for Refrigeration Systems
FOREWORD
Addendum e revises requirements related to the design, installation, location, and testing of refrigerant piping. In several cases, there is more than one compliance path to address the...
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 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 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 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.
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...
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...
15 2013 INT 4
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
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.