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Subchapter 7. General Industry Safety Orders
Group 20. Flammable Liquids, Gases and Vapors
Article 138. Hydrogen
§5497. Operating Instructions.
(a) For installations which require any operation of equipment by the user, legible instructions shall be maintained at operating locations.
(b) A qualified person shall be in attendance at all times while the mobile hydrogen supply unit is being unloaded.
(c) Each mobile liquefied hydrogen supply unit used as part of a hydrogen system shall be adequately secured to prevent movement.
(d) The mobile hydrogen supply unit shall be grounded.
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