Safety 1st Advancer Manual do Operador descarregar pdf (Página 88)

Environmental Remediation Drilling

Safety Guideline

Page 88 of 132

4.16.5 - Preventing the Spread of Contamination

Several procedures can be established to minimize contact with waste and the potential for contamination

including:

• Employing work practices that minimize contact with hazardous substances (avoid areas of obvious

contamination, avoid touching potentially hazardous substances),

• A specified area will either be available or can be constructed where fluids generated during

decontamination can be captured for disposal.

• Use of remote sampling, handling, and container-opening techniques,

• Covering monitoring and sampling equipment with plastic or other protective material,

• Use of disposable outer garments and disposable sampling equipment with proper containment of these

disposable items,

• Use of disposable towels to clean the outer surfaces of sample bottles before and after sample collection,

and

• Encasing the source of contaminants with plastic sheeting or over packs.

4.16.6 - Hazards of Decontamination

Due to the presence of water, chemicals, solvents, heat, pressure, and heavy equipment, decontamination

activities can be very dangerous. The following are safety items to be considered during equipment

decontamination.

Proper procedures for dressing prior to entrance into contaminated areas will minimize the potential for

contaminants to bypass the protective clothing. Generally, all fasteners (zippers, buttons, and snaps) should

be used, gloves and boots tucked under or over sleeves and pant legs, and all junctures taped, which should

be detailed in the site health and safety plan.

• Only properly trained personnel should operate cleaning equipment.

• Use PPE as directed in the health and safety plan, which may include safety glasses with face shield,

goggles, poly-coated Tyvek®, aprons, gloves (nitrile, neoprene, or leather), steel toed boots, chemical

resistant rubber boots, and respirators to prevent physical contact with potential contaminants and

debris.

• Be aware of the slipping hazards of wet or dry plastic inside the decontamination area.

• When drill rods are hoisted from the hole, they should be cleaned for safe handling with a rubber or

other suitable rod wiper. NEVER use unprotected hands to clean drilling fluids from drill rods.

• Practice good housekeeping at all times, keeping the decontamination area free of slip, trip, or fall

hazards.

• Do not allow eating, smoking, drinking, chewing, or any hand-to-mouth contact in decontaminant areas.

• Monitor affects of heat or cold stress or overexertion in the decontamination area.

• Monitor air concentrations using direct-reading, real-time instruments such as organic vapor monitors

(OVMs) and Draeger tubes.

• Establish action levels or limits for ambient air concentration, explosive atmosphere, O

deficient

atmosphere, and make sure these action levels are understood by decontamination personnel.

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Safety 1st Advancer Manual do Operador Página 88