| Published by the National Fire Protection Association (NFPA)
Advance fire protection by working with the latest requirements for wet chemical extinguishing systems in the 2009 NFPA 17A.
NFPA 17A: Standard for Wet Chemical Extinguishing Systems outlines today's rules for wet chemical extinguishing systems associated with restaurant and institutional hoods, plenums, ducts, and associated cooking appliances. Everything you need to maximize equipment integrity and reliability is covered:
- Components
- System requirements
- Plans and acceptance tests
- Inspection, maintenance, and recharging
Changes in the 2009 edition include clarified criteria for certification and training of maintenance personnel and a new requirement for tagging of all non-compliant systems.
This edition of NFPA 17A, Standard for Wet Chemical Extinguishing Systems, was prepared by the Technical Committee on Dry and Wet Chemical Extinguishing Systems, and acted on by NFPA at its June Association Technical Meeting held June 2-5, 2008, in Las Vegas, NV. It was issued by the Standards Council on July 24, 2008, with an effective date of September 5, 2008, and supersedes all previous editions.
This edition of NFPA 17A was approved as an American National Standard on September 5, 2008.
Origin and Development of NFPA 17A
The Dry Chemical Extinguishing Systems Committee was activated in 1952. On April 6, 1983, the Standards Council received a request to assign the subject of wet chemical extinguishing systems to the appropriate committee. Listed systems had been available for some time. After the Foam Committee declined the request, the Dry Chemical Committee was asked to assume responsibility for the project. In May 1983, the Dry Chemical Extinguishing Systems Committee voted to accept the assignment and requested that the Standards Council expand the Committee Scope to include the new topic. The Committee also requested that the new document be identified as NFPA 17A, Standard for Wet Chemical Extinguishing Systems. A subcommittee met in June 1983 to develop the text. In November 1984, the Council approved a request to change the name of the Committee to the Committee on Dry and Wet Chemical Extinguishing Systems. The 1990 edition was a partial revision of the 1986 edition.
The 1998 edition of this standard was revised to clarify the requirements for protection of unclosable openings and equipment shutdown.
The changes to the 2002 edition consisted of an editorial reformatting of the standard to comply with the Manual of Style for NFPA Technical Committee Documents. Technical changes included clarification of requirements for fuel and power shutoff upon actuation of the system and rewriting the requirement for simultaneous systems operation.
The changes to the 2009 edition consist of clarification of inspection, maintenance, and service requirements and qualifications for service personnel.
1.1 Scope. The provisions of this standard apply to the design, installation, operation, testing, and maintenance of pre-engineered wet chemical fire extinguishing systems that discharge wet chemical from fixed nozzles and piping by means of expellant gas. It contains only the essential requirements and recommendations needed to make the standard workable in the hands of those skilled in this field.
1.2 Purpose. This standard is prepared for the use and guidance of those charged with the purchasing, designing, installing, testing, inspecting, approving, listing, operating, or maintaining of pre-engineered wet chemical fire-extinguishing systems in order that such equipment will function as intended throughout its life.
1.3 Application. Minimum requirements are specified for restaurant, commercial, and institutional hoods, plenums, ducts, and associated cooking appliances.
Table of Contents
Chapter 1: Administration. Chapter 2: Referenced Publications. Chapter 3: Definitions. Chapter 4: Components. Chapter 5: System Requirements. Chapter 6: Plans and Acceptance Tests. Chapter 7: Inspection, Maintenance, and Recharging. Annex A: Explanatory Material. Annex B: Informational References. Index.
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