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Subchapter 7. General Industry Safety Orders
Group 8. Points of Operation and Other Hazardous Parts of Machinery
Article 64. Pulp, Paper and Paperboard Mills

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§4421. Recovery Furnace Area.

(a) An audible emergency warning system shall be installed in kraft and soda base sulfite recovery furnace areas.

(b) Smelt-dissolving tanks shall be covered at all times except when samples are being taken.

(c) Exhaust ventilation shall be designed, installed and maintained where niter cake is fed into a rotary furnace to ensure the concentration of hydrogen sulfide gas permissible exposure limit (PEL) meets the requirements of Article 107.

(d) Pressure tank accumulators shall be inspected twice annually. A record of the inspection, including the date and name of the person who made the inspection, shall be kept on file in the plant.

NOTE: Authority cited: Section 142.3, Labor Code. Reference: Section 142.3, Labor Code.


1. Repealer and new section filed 9-15-86; effective thirtieth day thereafter (Register 86, No. 38).

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