Laserfiche WebLink
ffl—�Q. <br /> SECTION 2 <br /> i <br /> RISK ANALYSIS <br /> 2.1 CHEMICAL HAZARDS <br /> A number -of products containing hazardous chemicals may be <br /> encountered at UST sites. Detailed information on the nature of <br /> these hazards may be found on the Material Safety Data Sheets <br /> (MSDS) provided by TFCC. These MEDS will be available on-site and <br /> at the TFCC offices involved. <br /> The chemicals of primary concern will be those originating from <br /> leaded and unleaded gasoline, diesel fuel, and waste oil. These <br /> chemicals included benzene, ehtylbenzene, toluene, and xylene. The <br /> toxicological properties of these compounds are shown. in Table 2.1. <br /> f <br /> { <br /> 2.2 PHYSICAL HAZARDS <br /> 2.2.1 Explosion <br /> Gasoline vapors can be highly explosive, having a flash point of <br /> �1 <br /> about -40 F, and are considered to be a fire hazard. <br /> 2.2.2 Heat Stress <br /> v The use of protective equipment, if required may create heat <br /> stress. Monitoring of personnel wearing perscnal protective <br /> clothing should commence when the ambient temperature is 70 F of <br /> above. Table 2,2 presents; the suggested frequency for such <br /> monitoring. Monitoring frequency should increase as the ambient <br /> temperature increases or as slow recovery rates are observed. <br /> Heat-stress monitoring should be performed by a person with a <br /> current first aid certification who is trained to recognize heat <br /> stress symptoms. For monitoring the body's recuperative abilities <br /> to excess heat, one or more of the following techniques will be <br /> used. other methods for determining heat-stress monitoring, such <br /> as the wet bulb globe temperature (WBGT) Index from American <br /> i Conference of Governmental industrial Hygienist (ACGIH) TLS! Booklet <br /> 1 can be used. <br /> { <br /> To monitor the worker, measure: <br /> o Heart rate. Count the radial pulse during a 30-second period <br /> as early as possible in the rest period. <br /> 2-1 <br />