Laserfiche WebLink
Both the respirator ana cartriaszes suemfiea for use in Levet C protection must be <br /> fit-testea onor to use in accoraance with OSHA remauons (29 CFR 1910.1025, 29 <br /> CFR 1910.134) <br /> Air punfying resvirators cannot tie worn unser me tollowine conaitions: <br />' - Oxygen deficiency <br /> - MLH concentrations <br />' High reiauve humidity <br /> • If contaminant levels exceea designated use concentrauons. <br />' Note: If respiratory protection is used the appropriate respirator usage log(s) <br /> must be completed and returned to the Office Heaith and Safety Officer tAppendix <br />' B). <br /> 3.4 Monitoring Requirements <br /> 3.4.1 Organic Vapors <br /> Monitonng tar organic vapors in the breathing zone %viii be conducted with a <br /> photoionizauon detector. % Draeger bellows equipped with the appropriate tubes <br /> will be used to monitor for benzene. Reaaings will be taken under the following <br /> circumstances. <br /> • Upon initial entry onto the site. <br /> • When weather conditions change. <br /> • When work begins on another portion of the site. <br /> - Every five feet during drilling. <br /> 3,4.2 Combustible Gases <br />'I <br /> Because of the grinding involved with drilling, there is a potential for sparkszto be <br /> ,-enerated. Due to the possiole presence of combustible compounas. it will be <br /> necessary to monitor for combustible gasses. N combustible gas meter will be used <br />' to monitor during all drilling activities. Guidelines have been establishea by the <br /> National Institute for Occupationai Safety and Health (NIOSH) concerning the <br /> action levels for work in a potentially explosive environment. 'These guidelines are <br />' as follows- <br /> 1) 10-20% LEL - Limit all activities to those which do not generate sparks. <br />' 2) >20% LEL - Cease all activities in order to allow time for the combustible <br /> gases to vent. <br />' m If the combustible gases in the well/bore hole are not diminished after allowing <br /> adeouate time to vent. then the tollowing stens should be taken• <br /> • Obtain an air compressor (minimum 15 horsepower) <br /> • Place the compressor a safe distance from the well (at least 20 ft ) This <br /> precaution is necessary since the corepressor itself is an ignition source. <br />' s1s/sY=01/0= <br /> 3-3 <br />