توضیحات :
NFPA 51 – Standard for the Design and Installation of Oxygen-Fuel Gas Systems for Welding, Cutting, and Allied Processes
۲۰۲۳ Edition
Chapter I Administration
۱-۱ Scope.
۱-۱-۱ This standard applies to the following:
(۱) Design and installation of oxygen-fuel gas welding and cutting systems and allied processes (see 3.3.2), except for systems meeting the criteria in 1-1-5.
(۲) Utilization of gaseous fuels generated from flammable liquids under pressure where such fuels are used with oxygen.
(۳) Storage on the site of a welding and cutting system installation of the following:
(a) Gases to be used with such systems where more than one cylinder each of oxygen and fuel gas are stored in any single storage area [includes storage of more than one cylinder each in any single storage area
even though all such stored cylinders may be intended for use in systems of the kind described in 1.1.1(1)].
(b) Calcium carbide.
۱-۱-۲ Unless specifically indicated otherwise, the term welding and cutting systems shall be considered to include allied processes in this standard.
۱-۱-۳ Where only a portion of a fuel gas system is to be used for welding, cutting, or allied processes, only that portion of the system need com ply with this standard.
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