ARCHIVED REPORTS XR0007793 - Laserfiche WebLink

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investigation All machines and tools will be cleaned regularly and maintained in good repair All moving parts will be securely fastened or covered when not in use Personal protective equipment required around any heavy equipment will include hard hats, steel-toe boots, and eye protection Hearing protection such as ear plugs will also be available In areas where operating heavy equipment can create a chemical or health hazard, appropriate protective clothing and respiratory protection will also be used ' 3.3 ELECTRICAL HAZARDS All electrical equipment to be used during field activities will be properly grounded Only qualified persons will work on electrical equipment and all equipment will be maintained in safe condition Utility companies (such as PG&E) and/or private locator services will be contacted to identify underground utility lines leading into the Site Underground electrical utilities will be located before filed activities commence 3.4 HEAT STRESS ' Heat stress may be caused by the combination of elevated ambient temperatures and the wearing of personal protective equipment The effects of heat stress are heat rash, cramps, exhaustion, and heat stroke To minimize the potential of heat stress, workers heart rates will be monitored in accordance with the guidelines published by NIOSH/OSHA/USCG/EPA ' Occupational Safety and Health Guidance Manual for Hazardous Waste Site Activities (1985) Cool water or fluids will be readily available to the employees, who will be encouraged to drink frequently during each break 3.5 COLD EXPOSURE It is not expected that cold exposure will be experienced at the Site However, all persons working outdoors should be aware that they could be exposed to rapid body temperature cooling in the presence of winds This is particularly a threat to the hazardous waste site worker if the body cools suddenly when chemical-protective equipment is removed and the clothing underneath is perspiration soaked The presence of wind greatly increases the rate of cooling ' 3.6 EXPLOSIVE ATMOSPHERES Flammable gases may be generated by the work activities A combustible gas meter will be used to detect the presence of explosive atmospheres which tend to be formed by relatively high concentrations of flammable vapors or particulates If an indication in excess of 10% of the LEL is observed, the area will not be entered or if already occupied it will be evacuated ' In addition to the above materials, hazardous organic vapors may also be present at levels too low to be detected by the combustible gas meter, but which exceed permissible exposure limits These organic vapors are detected by the use of an organic vapor detector (OVA-- Flame Ionization Detector or HNU--Photoionization Detector) If an indication of 300 ppm total hydrocarbons (TLV for gasoline) is observed, work will be halted, the area will be evacuated, and the SSO will be consulted prior to further activities ' 366-002 5-