CAN/CGSB-155.21 (Recommended Practices for the Provision and Use of Workwear
for Protection Against Hydrocarbon Flash Fire) is not a mandatory part of
CAN/CGSB-155.20 (Workwear for Protection Against Hydrocarbon Flash Fire). 1. SCOPE 1.1
These recommended practices provide guidance for the selection, use,
maintenance, retirement, and understanding of the limitations of workwear for
the protection against unplanned exposure to hydrocarbon flash fire by wearers,
employers, and others involved in programs requiring such protective clothing. 1.2
The use of workwear providing protection against hydrocarbon flash fires should
be incorporated into a proper safety program that also utilizes appropriate
administrative and engineering controls in addition to proper safe work
procedures. 1.3
Minimum performance requirements and test methods for single layer and
multi-layer garments are addressed in CAN/CGSB-155.20 - Workwear for Protection
Against Hydrocarbon Flash Fire and are not included in this document; however,
other considerations regarding selection of workwear when preparing a purchase
agreement are included. 1.4
Workwear for protection against hydrocarbon flash fire is available from a
variety of manufacturers, in a range of items (coveralls, pants, shirts, vests,
parkas, rainwear, disposable garments, aprons, etc.). Workwear for protection
against hydrocarbon flash fire is made out of a variety of either inherently
flame-resistant fabrics or fabrics that have been treated with flame-resistant
finishes. 1.5
The testing and evaluation of a product against this standard may require the
use of materials and/or equipment that could be hazardous. This document does
not purport to address all the safety aspects associated with its use. Anyone
using this standard has the responsibility to consult the appropriate
authorities and to establish appropriate health and safety practices in
conjunction with any applicable regulatory requirements prior to its use.