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6303.1.2 Emergency shutoff.
Oxidizing gas piping systems shall be provided with approved manual or automatic emergency shutoff valves that can be activated at each point of use and each source.
6303.1.2.1 Shutoff at source.
A manual or automatic fail-safe emergency shutoff valve shall be installed on supply piping at the container or other source of supply. Manual or automatic valves on the containers supplying the oxidizing gas may serve as the emergency shutoff valve when the containers are the sole source of supply and are not manifolded.
6303.1.2.2 Shutoff at point of use.
A manual or automatic emergency shutoff valve shall be installed on the supply piping at the point of use or at a point where the equipment using the gas is connected to the supply system.
6303.1.3 Ignition source control.
Ignition sources in areas containing oxidizing gases shall be controlled in accordance with FC 5003.7.
6303.2 Quantities exceeding the maximum allowable quantity per control area.
The storage, handling and use of oxidizers in amounts exceeding the maximum allowable quantity per control area indicated in FC 5003.1 shall be in accordance with FC Chapter 50 and this chapter.
6303.3 Multiple hazard sign.
Where more than one class of oxidizer is stored in immediate proximity to one another, such area shall be provided with hazard identification signs pursuant to FC Chapter 50 for the most severe class present.
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