NFPA 51B-1999 Standard for Fire Prevention During Welding, Cutting, and Other Hot Work.
1-5 Definitions. Approved.* Acceptable to the authority having jurisdiction. Authority Having Jurisdiction.* The organization, office, or individual responsible for approving equipment, an installa- tion, or a procedure. Designated Area. Permanent location designed or approved for hot work operations to be performed regularly. Hot Work. Any work involving burning, welding, or similar operations that is capable of initiating fires or explosions. Management. All persons, including owners, contractors, and so on, who are responsible for hot work operations. Permit. A document issued by the authority having jurisdic- tion for the purpose of authorizing performance of a specified activity. Permit Authorizing Individual (PAI).* The individual des- ignated by management to authorize hot work. The PAI can- not be the hot work operator. Shall. Indicates a mandatory requirement. Standard. A document, the main text of which contains only mandatory provisions using the word “shall” to indicate requirements and which is in a form generally suitable for mandatory reference by another standard or code or for adop- tion into law. Nonmandatory provisions shall be located in an appendix, footnote, or fine-print note and are not to be con- sidered a part of the requirements of a standard. Welding and Allied Processes.* Those processes such as arc welding, oxy-fuel gas welding, open-flame soldering, brazing, thermal spraying, oxygen cutting, and arc cutting.
4-1 Scope. The following provisions shall apply to oxy-fuel gas welding and cutting operations at public exhibitions, dem- onstrations, displays, and trade shows (referred to hereinafter as the site) in order to promote the safe usage of compressed gases in public gatherings. 4-2 Supervision. Installation and operation of welding, cut- ting, and related equipment shall be done by, or under the supervision of, a competent operator to ensure the personal protection of viewers and demonstrators as well as the protec- tion from fire of materials in and around the site and the building itself. 4-3 Site. 4-3.1 Location. Sites involving the use and storage of com- pressed gases shall be located so as not to interfere with the egress of people during an emergency. 4-3.2 Design. The site shall be constructed, equipped, and operated in such a manner that the demonstration will be car- ried out so as to minimize the possibility of injury to viewers. 4-4 Fire Protection. 4-4.1 Fire Extinguishers. Each site shall be provided with a portable fire extinguisher of appropriate size and type and with a pail of water. 4-4.2 Shielding. The public, combustible materials, and com- pressed gas cylinders at the site shall be protected from flames, sparks, and molten metal. 4-4.3 Fire Department Notification. The fire department shall be notified in advance of such use of the site.
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