توضیحات :
NFPA 11A – Standard for Medium- and High-Expansion Foam Systems
۱۹۹۹ Edition
This edition of NFPA 11A, Standard for Medium- and High-Expansion Foam Systems, was prepared by the Technical Committee on Foam and acted on by the National Fire Protection Association, Inc. at its Fall Meeting held November 16-18, 1998, in Atlanta, GA. It was issued by the Standards Council on January 15, 1999, with an effective date of February 4, 1999, and supersedes all previous editions.
This edition of NFPA 11A was approved as an American National Standard on February 4, 1999.
Origin and Development of NFPA 11A
Work on this standard commenced in 1964. Several drafts were prepared by the Medium-and High-Expansion Foam System Subcommittee and processed at committee meetings held in subsequent years. The subcommittee’s draft was approved by the Foam Committee at its New York meeting in December of 1967. Thereafter, the material was published in the 1968 NFPA Technical Committee Reports for study and evaluation by the NFPA membership and others interested. It was approved as a tentative standard at the 1968 Annual Meeting.
During 1968 NFPA 11A was further revised and was submitted and adopted as a revised tentative standard at the 1969 Annual Meeting. After one more year as a tentative standard, it was officially adopted without revision at the 1970 Annual Meeting. Amendments were made in 1976 and 1981. Further amendments were made in 1982 and the title was changed to include medium-expansion foam. Amendments were made in 1987. Foam concentrate pump requirements were added to the 1994 edition.
The 1999 edition of the document is a reconfirmation. However, some editorial changes have been made to make the document more user-friendly.
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