1、 Tentative Interim Amendment NFPA51 Standard for the Design and Installation of Oxygen-Fuel Gas Systems for Welding, Cutting, and Allied Processes 2013 Edition Reference: 10.10 and A.10.10 TIA 13-1 (SC 12-10-3/TIA Log #1070) Pursuant to Section 5 of the NFPA Regulations Governing Committee Projects,
2、 the National Fire Protection Association has issued the following Tentative Interim Amendment to NFPA 51, Standard for the Design and Installation of Oxygen-Fuel Gas Systems for Welding, Cutting, and Allied Processes, 2013 edition. The TIA was processed by the Technical Committee on Industrial and
3、Medical Gases, and was issued by the Standards Council on October 30, 2012, with an effective date of November 19, 2012. A Tentative Interim Amendment is tentative because it has not been processed through the entire standards-making procedures. It is interim because it is effective only between edi
4、tions of the standard. A TIA automatically becomes a proposal of the proponent for the next edition of the standard; as such, it then is subject to all of the procedures of the standards-making process. 1. Revise Section 10.10 as follows: 10.10 MATS Fire Protection. 10.10.1 Fire protection requireme
5、nts for MATS shall apply to discharging stations located indoors or outdoors. 10.10.1.1* A deluge or water spray fixed system shall be provided for MATS fire areas used as indoor or outdoor charging or discharging stations. 10.10.1.2* Deluge or water spray fixed systems shall provide a minimum desig
6、n density in accordance with the design documents for the MATS fire area being protected. 10.10.1.3 The deluge or water spray fixed system shall be able to be activated automatically by a fast acting fire detection system and also by manual actuator. 10.10.1.3.1 Manual activation controls shall be i
7、dentified and marked with a sign and shall be positioned for use in an emergency. 10.10.1.3.2 Fire protection equipment and manual activation controls serving the MATS fire protection system shall not be blocked or obstructed. 10.10.1.4 Existing acetylene discharging stations shall be protected by a
8、n automatic deluge or water spray fixed system in accordance with 10.10.1 not later than January 1, 2015. See also Section 1.4. 10.10.1.4.1 The requirements of 10.10.1.1 shall not apply to existing indoor or outdoor facilities, equipment, structures, or other installations where MATS are discharged
9、that existed or were approved for construction or installation prior to the effective date of this standard providing the MATS are protected with an automatic sprinkler system with a minimum design density of not less than 0.25 gpm per square foot (10.1 L/min per square meter). 10.10.1.5 At least on
10、e listed portable fire extinguisher rated in accordance with NFPA 10, Standard for Portable Fire Extinguishers, at not less than 20 B:C shall be mounted on the mobile acetylene trailer. 10.10.1.6 Fire protection equipment shall be identified and located so that it is visible and accessible in an eme
11、rgency. A.10.10.1.1 The system should be designed to provide water as a means of cooling the containers located on the trailer that are potentially exposed to fire and not as a means to extinguish the fire. To extinguish a gas fire, the flow of gas must be shut off at the source. A.10.10.1.2 For add
12、itional information on mobile acetylene trailer systems, see CGA G-1.6, Standard for Mobile Acetylene Trailer Systems. Issue Date: October 30, 2012 Effective Date: November 19, 2012 (Note: For further information on NFPA Codes and Standards, please see www.nfpa.org/codelist) Copyright 2012 All Rights Reserved NATIONAL FIRE PROTECTION ASSOCIATION
