Laserfiche WebLink
SECTIONFOUR Site Hazard Analysis <br /> TABLE 4-1 <br /> Chemical Contaminants of Concern <br /> Methane 1000 <br /> Sources:NIOSH 2005;8 CCR 5155 et seq, , , , , and <br /> CNS = central nervous system OSHA = Occupational Safety and Health Administration <br /> GI = gastro-intestinal PEL = permissible exposure limit <br /> mg/kg = milligrams per kilogram ppm =parts per million <br /> mg/m3 = milligrams per cubic meter TLV =threshold limit value <br /> ND = not detected pg/L =micrograms per Liter <br /> TABLE 4-2 <br /> Monitoring Equipment Action Levels—Project Field Activities <br /> Equipment ` Reading' Action <br /> Explosimeter <10%LEL Continue with caution. <br /> >10%LEL Halt operations and evacuate. Reassess situation.Attempt to <br /> determine what and why conditions are changing. <br /> 02 Meter <19.5%02 Halt operations and evacuate.Reassess situation.Attempt to <br /> determine what and Why conditions are changing.'; <br /> 19.5=23.5%02 Continue operations. <br /> >23.5%02 Halt operations and evacuate.Reassess situation.Attempt to <br /> determine what and why conditions are changing. <br /> CO <15 ppm Periodic monitoring not less than every 30-minutes <br /> Meter/Explosimeter <br /> > 15 ppm and<25 Reduce sources of vehicle/engine exhaust and increase ventilation. <br /> ppm Increase monitoring to not less than every 15-minutes. <br /> >25 ppm Shut down sources of vehicle/engine exhaust and evacuate <br /> immediate area.Contact HSM <br /> H2S Meter <10 ppm Periodic monitoring not less than every 5-minutes <br /> > 10 ppm and<20 Increase to continuous monitoring. <br /> ppm <br /> >20 ppm Evacuate area immediately.Contact HSM <br /> a Readings are above background levels and taken in the breathing zone of field personnel.Monitoring to be conducted twice <br /> during each work shift,or as deemed necessary by the SSO or PM.For benzene confirmed contaminants or if benzene cannot <br /> be ruled out(at the TLV action level full-day confirmed exposure)work resulting in exposure must stop and the PHSO or HSM <br /> must be consulted,(additional controls and equipment requirements may be implemented). <br /> Intermittent=<two minutes <br /> Continuous=>two minutes <br /> d <br /> TS AND SETTINGS\CLEIMBECH\DESKTOP\WORLD ENTERPRISES\WORK PLANS\WELL DESTRUCTION\ATTACHMENT C WORLD ENTERPRISES HSP TG EDITS.DOC\16-NOV-11' <br />