Other safety precautions for the handling of lime are as follows:

An efficient dust-collecting system should be used whenever dust is present at handling points.

A dry-pickup vacuum cleaner should be used for removing dust around unloading equipment and chemical feeders.

Protective clothing should always be worn for persona! safety in case bags break or the dust- collection system fails. The proper dress is heavy-denim clothing with long sleeves, heavy gloves, bandanas, and trousers tied around the shoe tops. Chemical goggles and suitable dust masks should be worn. Any exposed skin areas should be covered with protective creams.

WARNING

Avoid accidental contact of quicklime or slaked lime with water as it generates excessive heat. Serious skin bums and eye damage can be caused by contact with hot lime solution. ALWAYS WEAR CHEMICAL GOGGLES OR FACE SHEILDS WHEN LIME FEEDING EQUIPMENT IS BEING OPERATED.

HANDLING AND STORING CHEMICALS

In handling and storing chemicals, observe all safety precautions.

General.

1. Wear appropriate-type chemical cartridge dust masks when bags of chemicals or bulk material are unloaded or otherwise handled. When the chemical is particularly irritating or dust is excessive, wear chemical goggles.

2. In handling toxic solutions, a face shield, boots, gloves, and a rubber apron afford required protection from splashes or sprays.

3. Store chemicals in a clean, dry place. Store bagged or mixed chemicals in single or double rows with access aisles around each stack for frequent fire inspection. This type of storage makes it easier to remove burning chemicals.

4. Store chemicals in separate areas free from contact with flammable chemicals.

5. Prohibit smoking when loading and unloading flammable chemicals.

6. Do not store flammable chemicals where sparks from overhead electrical equipment can start a fire.

7. Use explosionproof wiring and electrical equipment where flammable chemicals are stored or handled.

8. Provide adequate shower facilities for all personnel handling chemicals.

9. Give all personnel handling fluorides detailed safety instructions.

Fluorides.

1. Avoid breathing fluoride dust; wash thoroughly after handling fluorides and clean up all spillage.

2. Respirators, chemical goggles, rubber gloves, and protective clothing must be worn by all personnel likely to be exposed to sodium fluoride or sodium silicofluoride dust. Rubber gloves and boots and acidproof aprons are necessary where acids, such as hydrofluoric, fluosilicic, and hydrofluosilicic, are handled. Wash protective equipment thoroughly before and after using.

3. Take care to prevent dust or acids from entering open cuts, sores, or lesions.

4. Provide all fluoride-handling equipment, such as storage bunkers, weight hoppers, and dry- feed machines, with devices to keep the dust hazard down. Acid pumps will be provided with a clear plastic shield around glands and parts to protect personnel from acid spray.

5. Store fluorides in a specific, well-identified area. Storage in various or changing locations may result in a mistake in identifying the chemical. All acid containers will be covered, well vented, and stored where there is no fire hazard.

6. Containers that have held fluoride compounds will be disposed of in a safe manner by personnel protected as described above.