Heat Responsive Links for Fire-Protection Service

Underwriters Laboratories Inc. (UL)
Standards Development Organisation:
Underwriters Laboratories Inc.
Working Program:
View the UL work program
Designation Number:
ANSI/CAN/UL ULC 33
Standard Type:
National Standard of Canada - Domestic
Standard Sub-Type
Joint Canada-U.S. National Standard
Standard Development Activity:
Amendment Revision
ICS code(s):
13.220.01
13.220.10
13.220.20
Status:
Proceeding to development
SDO Comment Period Start Date:
SDO Comment Period End Date:
Posted On:

Scope:

These requirements cover heat responsive links used for fire-protection service. These links consist of devices intended for installation under load conditions such as for use with automatic fire suppression systems; or automatic closure devices for doors, windows, dampers or smoke relief vents.

Heat responsive links are categorized by temperature rating, type of coating or plating, minimum and maximum design load, and other factors which may have a bearing on their intended use.

Project need:

This proposal is to make editorial corrections throughout UL 33. There was an editorial error in the balloting of the binational version of UL 33. A correction has been made to the allowed tolerance which is consistent with the 8th edition of the standard.

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.