Geotech Shallow Well Probe Scavenger, Инструкция по установке и эксплуатации

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Decontamination Solutions to Avoid
Some decontamination solutions should be avoided because of their toxicity, flammability, or harmful effects to
the environment. Halogenated hydrocarbons, such as carbon tetrachloride, should not be used because of
their toxicity, possible incompatibility, and some because of their flammability.
Organic decontamination solutions should not be used on personal protective equipment (PPE) because they
may degrade the rubber or other materials comprising the PPE.
Mercurials are sometimes used for sterilization. They should be avoided because of their toxicity.
Chemical leaching, polymerization, and halogen stripping should all be avoided because of possible
complications during decontamination.
Sand-blasting, a method of physical removal, should be avoided because the sand used on the contaminated
object usually needs to be disposed of as hazardous waste, a very costly proposition. Also, sand-blasting
exposes personnel to silica, a carcinogen.
Freon is known to be particularly effective for the cleansing of PCB's but its effect on the ozone layer is
extremely harmful. Its use is discouraged.
Strong acids or bases should not be used when cleaning metals and gaskets or tools or other equipment
because of the possibility of corrosion.
Disposal of Decontamination Solutions and Waste Water
All solutions and water used for decontamination must be collected. If lab analysis indicates that the water
and/or solutions exceed allowable contamination levels, they must be treated as hazardous waste.
Alternatively, the solutions and water may be treated on-site to lower the contamination levels and render them
non hazardous.
Containers such as 55 gallon (208 liter) drums should be available for storage of wastes.
Spent decontamination solutions can be collected by using heavy-duty plastic sheets, visqueen sheets, kiddie
pools, or if needed, a larger containment basin. The decontamination of equipment must be performed on the
sheets or in the basins. They could be placed on a slight angle so that the spent decontamination solutions
drain into a collection basin or drum.
Recommended Supplies for Decontamination of Personnel, Clothing and Equipment
The list below contains recommendations for supplies which would be on hand for the decontamination of
personnel, clothing and equipment. Depending on the site activities, not all of these items may be needed.
Alternatively, some additional items not listed here may be required.

Drop cloths of plastic or other suitable material, such as visqueen, for heavily contaminated equipment.

Disposal collection containers, such as drums or suitably lined trash cans for disposable clothing and heavily
contaminated personal protective clothing or equipment to be discarded.

Lined box with adsorbent for wiping or rinsing off gross contaminants and liquid contaminants.