§ 13.58. Safety equipment.
(a) Safety relief valves shall be provided on all vaporizers designed for liquefied petroleum gas. They shall be of a design and construction generally acceptable to good practice in the industry and shall be set to relieve at the designed working pressure of the vaporizers. Such valves shall be directly connected to the vaporizers and marked with the name or identifying trademark of the manufacturer, the pipe size valve inlet and the pressure at which the valve is set to blow.
(b) Fusible plugs shall not be installed on vaporizers.
(c) Gas fired heating systems supplying heat for vaporization purposes shall be equipped with automatic safety devices to shut off flow of gas to main burners and pilot in case of failures of the pilot light.
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