COMPLIANCE INFO_1995 - Laserfiche WebLink

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Glove material should consist of one of the following: neoprene, nitril rubber, butyl rubber, polyvinyl alcohol or Viton. Emergency response measures to be taken if skin or eye exposure occurs are presented later in the Safety Plan. Respiratory exposure limits for anticipated volatile compounds are tabulated below. COMPOUND IDLH PEL STEL Benzene a 1 5 Ethylbenzene 2000 100 125 Toluene 2000 100 500 Xylene 1000 100 150 Notes: 1. Units are parts -per -million (ppm) in air. a Carcinogen (NIOSH, June 1990). Original NIOSH IDLH = 3000 During the underground petroleum piping removal project, on-site respirators will consist of half -face type fitted with organic vapor cartridges. Respirators will be worn if air monitoring equipment, photoionzation detector (PID) or equivalent, indicates total organic vapors of 20 ppm or greater within the primary work zone breathing space for more than 10 minutes. If the total organic vapors are consistently greater than 50 ppm, full -face respirators will be worn and consideration will be given to potential engineering controls and/or upgrading personal protection. EXPLOSION HAZARDS During PID air monitoring, ten percent of the Lower Explosive Limit (LEL) for ethylebenzene will be considered the project safety standard. The LEL for ethylbenzene has been set by the National Institute for Occupational Safety (NIOSH) at 1.0 percent in air. Ten percent of 1.0 percent is equivalent to 1000 ppm. Monitoring will be performed on vapors emanating from the excavation. All equipment will be shut -down while further safety alternatives are evaluated if the LEL meter indicates explosion potential and/or if air monitoring equipment readings indicate near 1000 ppm levels. Dry chemical fire extinguishers will be on -hand at all times during tank removal activities. WORK ZONES AND SECURITY MEASURES Work will be performed at the piping trenches from the tank pit area to the fuel dispensing islands.