Standard for Dry Chemical Fire Extinguishers

Designation Number:
CAN/ULC S504
Standard Type:
National Standard of Canada - Domestic
Standard Sub-Type
Bi-National
Standard Development Activity:
Amendment Revision
ICS code(s):
13.220.10
Status:
Proceeding to development
SDO Comment Period Start Date:
SDO Comment Period End Date:
Posted On:

Scope:

These requirements cover the construction and performance, exclusive of performance during fire tests, of portable dry chemical and dry powder (Class D) fire extinguishers. Dry chemical and dry powder fire extinguishers are intended to be utilized in accordance with the Standard for Portable Fire Extinguishers, ANSI/NFPA 10 and with the National Fire Code of Canada.

The requirements for performance during fire testing of dry chemical fire extinguishers are specified in the Binational Standard for Rating and Fire Testing of Fire Extinguishers, ANSI/UL 711/CAN/ULC-S508.

As used in these requirements, the term "extinguisher" refers to all extinguishers or any part thereof covered by these requirements, unless specifically noted otherwise.

Project need:

This proposal is intended to provide improved definition and clarity to salt spray corrosion testing required under ULC S504 and related portable extinguisher standards. It should not compromise the safety, functionality, or performance of an extinguisher. Unlike suppression systems, portables are subjected to repeated corrosion testing using randomly selected production samples. The intent of this testing is understandable. However, in practice, the requirement of zero defects is challenging at best in a manufacturing environment. Other corrosion standards, such as MIL-A-8625F, have taken a more pragmatic approach and permit a defined level of defects. Proposed changes include sample evaluation methods, decorative coatings/plating, aluminum components, porous surfaces/ imperfections and pre-approved components.

Note: The information provided above was obtained by the Standards Council of Canada (SCC) and is provided as part of a centralized, transparent notification system for new standards development. The system allows SCC-accredited Standards Development Organizations (SDOs), and members of the public, to be informed of new work in Canadian standards development, and allows SCC-accredited SDOs to identify and resolve potential duplication of standards and effort.

Individual SDOs are responsible for the content and accuracy of the information presented here. The text is presented in the language in which it was provided to SCC.