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CAN/ULC 566:2025A Standard for Halocarbon Clean Agent Fire Extinguishers
ULC CAN/ULC 566:2025A Standard for Halocarbon Clean Agent Fire Extinguishers
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Description
Preface
This is the common ULSE and ULC Standard for Halocarbon Clean Agent Fire Extinguishers. It is the Second edition of CAN/ULC 566, and the Third edition of ANSI/UL 2129.
This common Standard was prepared by UL Standards & Engagement Inc. (ULSE), ULC Standards, and the Extinguisher Technical Harmonization Committee.
This Standard was formally approved by the ULC Standards Committee on Portable Fire Extinguishers.
Only metric SI units of measurement are used in this Standard. If a value for measurement is followed by a value in other units in parentheses, the second value may be approximate. The first stated value is the requirement.
In Canada, there are two official languages, English and French. All safety warnings must be in French and English. Attention is drawn to the possibility that some Canadian authorities may require additional markings and/or installation instructions to be in both official languages.
Annexes A and B, identified as Normative, form a mandatory part of this Standard.
Note: Although the intended primary application of this Standard is stated in its Scope, it is important to note that it remains the responsibility of the users of the Standard to judge its suitability for their particular purpose.
Level of Harmonization
This Standard is published as an identical standard between ULSE and ULC Standards.
An identical standard is a standard that is the same in technical content except for conflicts in Codes and Governmental Regulations. Presentation shall be word for word except for editorial changes.
Interpretations
The interpretation by the standards development organization of an identical or equivalent standard shall be based on the literal text to determine compliance with the standard in accordance with the procedural rules of the standards development organization. If more than one interpretation of the literal text has been identified, a revision shall be proposed as soon as possible to each of the standards development organizations to more accurately reflect the intent.
SCOPE
1.1 These requirements cover the construction and performance, exclusive of performance during fire tests, of portable halocarbon clean agent fire extinguishers. Halocarbon clean agent fire extinguishers are intended to be utilized in accordance with the Standard for Portable Fire Extinguishers, NFPA 10 and with the National Fire Code of Canada.
1.2 The requirements for performance during fire testing of halocarbon clean agent fire extinguishers are specified in the Binational Standard for Rating and Fire Testing of Fire Extinguishers, ANSI/UL 711 / CAN/ULC-S508.
1.3 As used in these requirements, the term "fire extinguisher" refers to all extinguishers or any part thereof covered by these requirements, unless specifically noted otherwise.
Preface
This is the common ULSE and ULC Standard for Halocarbon Clean Agent Fire Extinguishers. It is the Second edition of CAN/ULC 566, and the Third edition of ANSI/UL 2129.
This common Standard was prepared by UL Standards & Engagement Inc. (ULSE), ULC Standards, and the Extinguisher Technical Harmonization Committee.
This Standard was formally approved by the ULC Standards Committee on Portable Fire Extinguishers.
Only metric SI units of measurement are used in this Standard. If a value for measurement is followed by a value in other units in parentheses, the second value may be approximate. The first stated value is the requirement.
In Canada, there are two official languages, English and French. All safety warnings must be in French and English. Attention is drawn to the possibility that some Canadian authorities may require additional markings and/or installation instructions to be in both official languages.
Annexes A and B, identified as Normative, form a mandatory part of this Standard.
Note: Although the intended primary application of this Standard is stated in its Scope, it is important to note that it remains the responsibility of the users of the Standard to judge its suitability for their particular purpose.
Level of Harmonization
This Standard is published as an identical standard between ULSE and ULC Standards.
An identical standard is a standard that is the same in technical content except for conflicts in Codes and Governmental Regulations. Presentation shall be word for word except for editorial changes.
Interpretations
The interpretation by the standards development organization of an identical or equivalent standard shall be based on the literal text to determine compliance with the standard in accordance with the procedural rules of the standards development organization. If more than one interpretation of the literal text has been identified, a revision shall be proposed as soon as possible to each of the standards development organizations to more accurately reflect the intent.
SCOPE
1.1 These requirements cover the construction and performance, exclusive of performance during fire tests, of portable halocarbon clean agent fire extinguishers. Halocarbon clean agent fire extinguishers are intended to be utilized in accordance with the Standard for Portable Fire Extinguishers, NFPA 10 and with the National Fire Code of Canada.
1.2 The requirements for performance during fire testing of halocarbon clean agent fire extinguishers are specified in the Binational Standard for Rating and Fire Testing of Fire Extinguishers, ANSI/UL 711 / CAN/ULC-S508.
1.3 As used in these requirements, the term "fire extinguisher" refers to all extinguishers or any part thereof covered by these requirements, unless specifically noted otherwise.