Active Standard ASTM E1549 / E1549M | Developed by Subcommittee: E21.05
Book of Standards Volume: 15.03
Historical (view previous versions of standard)
1.1 This document specifies special items of clothing (cleanroom garments) designed to protect aerospace products from electrostatic discharge and from contaminants released by personnel and garments. Special clothing includes low linting coveralls, footwear, and head covers.
1.3 Two types of fabrics can be selected for the garments. Both types are inherently static-dissipative materials to prevent electrical discharges that can damage sensitive hardware or initiate explosions in the presence of flammable vapors. The material specified for “hazardous environments” is flame resistant and provides additional protection to the wearer. Selection of garment design and fabric should be based on the user's needs with respect to functional and environmental requirements.
1.5 This standard is intended to be in compliance with the ASTM policy on Fire Standards.2 Flammability tests specified in this standard should be used to measure and describe the properties of fabrics in response to heat and flame under controlled laboratory conditions and should not be used to describe or appraise the fabrics under actual fire conditions. However, results of the tests may be used as elements of a fire risk assessment which takes into account all of the factors which are pertinent to an assessment of the fire hazard of operations in controlled environment areas.
1.6 The values stated in either SI units or inch-pound units are to be regarded separately as standard. The values stated in each system may not be exact equivalents; therefore, each system shall be used independently of the other. Combining values from the two systems may result in non-conformance with the standard.
2. Referenced Documents (purchase separately) The documents listed below are referenced within the subject standard but are not provided as part of the standard.
D123 Terminology Relating to Textiles
D204 Test Methods for Sewing Threads
D737 Test Method for Air Permeability of Textile Fabrics
D1683 Test Method for Failure in Sewn Seams of Woven Apparel Fabrics
D1894 Test Method for Static and Kinetic Coefficients of Friction of Plastic Film and Sheeting
D2257 Test Method for Extractable Matter in Textiles
D5034 Test Method for Breaking Strength and Elongation of Textile Fabrics (Grab Test)
D6193 Practice for Stitches and Seams
E96/E96M Test Methods for Water Vapor Transmission of Materials
E176 Terminology of Fire Standards
E535 Practice for Preparation of Fire-Test-Response Standards
E1560 Test Method for Gravimetric Determination of Nonvolatile Residue From Cleanroom Wipers
F51 Test Method for Sizing and Counting Particulate Contaminant In and On Clean Room Garments
F739 Test Method for Permeation of Liquids and Gases through Protective Clothing Materials under Conditions of Continuous Contact
F1506 Performance Specification for Flame Resistant and Arc Rated Textile Materials for Wearing Apparel for Use by Electrical Workers Exposed to Momentary Electric Arc and Related Thermal Hazards
U.S. Federal StandardsA-A 50195 Thread, Aramid CFR Title 16 Part 16 Standard for the Flammability of Clothing Textiles FED-STD-209E Airborne Particulate Cleanliness Classes in Cleanrooms and Clean Zones
ICS Number Code 13.340.10 (Protective clothing)