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Tubular gauges on stationary tanks, vats, or containers which contain corrosive materials shall be shielded to prevent liquid spray from endangering employees should the gauge break. All such gauges shall be guarded when exposed to the hazard of being broken by accidental impact and in all cases when located less than 7 feet above or 3 feet laterally from working levels or passageways. All such gauges shall be provided with valves which can be readily closed in case of breakage. When practicable, ball-check or other self-closing valves shall be used.
Areas used for the storage or processing of corrosive materials shall be equipped with at least one of the following:
1. Water outlets, with attached hose, for adequate dilution and flushing of spills to a safe location.
2. A covered and labeled container of absorbent-neutralizer mixture suitable for the neutralization and absorption of corrosive materials spills. There shall not be less than one such container holding 50 pounds of an absorbent-neutralizer mixture.
A deluge water-shower and eye flusher, with the water piping carrying a pressure not exceeding 25 pounds, shall be provided near each area where corrosive materials which may burn, irritate, or otherwise be harmful to persons, are stored, processed, or used. Shower and eye flusher shall be connected to a potable water supply line.
Tank cars shall be unloaded as soon as possible after their arrival at point of delivery and shall not be used as storage tanks. Tank cars containing corrosive materials shall not be allowed to remain at point of delivery for more than 24 hours while being unloaded. A qualified person shall supervise the transfer operations.
The storage of corrosive materials in drums or carboys shall conform to the following:
1. Drums or carboys shall not be stacked more than two containers high unless on pallets. Maximum height shall be 12 feet.
2. Unless otherwise specifically authorized by the Chief, drum or carboys shall be stored in rows not more than two containers in width, or the width of the pallet, if stored on pallets. The aisles between such rows shall be of sufficient width to permit inspection and removal of leaking drums or carboys.
3. Drums and carboys shall be stored in an upright position with a bung or plug uppermost.
4. Excess pressure which may have developed from high temperature hydrogen formation in drums or carboys equipped with non-porous or non-venting stoppers, plugs, or caps, shall be vented when containers are placed in storage. Drums shall be opened at frequent intervals to prevent excessive pressure developing from hydrogen formation.
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