Safety 1st Advancer Manual do Operador descarregar pdf (Página 92)

Environmental Remediation Drilling

Safety Guideline

Page 92 of 132

• Inorganic Vapors and Gases -- There are only a few direct reading instruments with the capability to

detect and quantify non-specific inorganic vapors and gases. PIDs have a very limited capability in this

area. If specific inorganics are known or suspected of being present, an attempt should be made to

provide appropriate monitoring if possible. In the absence of a monitoring capability always assume a

worse case scenario and upgrade the level of protection to a level that gives respiratory and skin

protection that is appropriate to a worse case assumption.

• Radiation - When radiation may be encountered at a site, a Geiger-Mueller detector for beta and gamma

radiation should be used to monitor airborne levels.

Hazards

• Explosions from methane gas produced by the decay of organic materials in sanitary landfills. An

explosion potential also exists in monitoring work involving hydrocarbon recovery.

• Toxic substances used in manufacturing pesticides, herbicides, solvents, paints, and other common

products. Sometimes certain nontoxic chemicals placed in a disposal site will react with other chemicals

to produce highly toxic chemicals.

• Biologic wastes from hospitals or medical laboratories at universities that contain bacteria and viruses.

• Chemical wastes that are corrosive, highly reactive, flammable, or explosive.

• Radioactive wastes from hospitals and industrial and university laboratories.

• Before attempting to conduct monitoring work at a waste site, the drilling contractor should learn

exactly what types of wastes were handled there, provide the necessary protective clothing and training

for personnel, and stress that any physical changes in a worker's health may be caused by contact with

the waste. Always be prepared for worst case conditions.

Precautions

The following precautions should be assessed when sampling:

• Maintain good housekeeping practices, store sampling supplies, coolers, tools, and equipment orderly

and out of the main traffic area to avoid unnecessary slip, trip, and fall hazards.

• Be aware of the electrical hazards associated with using groundwater-sampling pumps.

• Use ground fault circuit interrupters in wet or moist conditions.

o Inspect wires for cuts, wearing and fraying. Remove these wires from service and mark

DANGER DO NOT USE if faulty.

o Follow manufacturer’s instructions when using generators.

o Use intrinsically safe electrical equipment in areas suspected to have flammable or explosive

hazards.

• Be aware of biological hazards when revisiting wells for sampling. Often wasps, bees, ants, spiders and

other insects and animals take up residence inside or around monitoring wells. Be aware of these

potential hazards as wells caps are opened.

• Request MSDSs for sample preservatives as well as site constituents. Wear appropriate chemical gloves

when handling samples as preservatives often contain acidic or corrosive chemicals.

• When using bailers for groundwater sampling, consider the following:

o Use caution and proper lifting techniques when utilizing larger bailers as they are extremely

heavy and awkward when full of sampling liquid.

o Use increased level of PPE, Tyvek, respirator (if necessary), goggles, splashguard, gloves,

chemical resistant boots, or booties to protect skin and eyes from contact with contaminated

liquids.

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