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G <br /> MGM. <br /> UNITS USED TO DESCRIBE OCCUPATIONAL EXPOSURES TO HAZARDOUS <br /> SUBSTANCES INCLUDE: EXPOSURE LIMIT, ALSO KNOWN A5 THE "THRESHOLD <br /> LIMIT VALUE" (TLV) , CEILING LIMIT, AND THE CONCENTRATION LEVEL <br /> THAT IS "IMMEDIATELY DANGEROUS TO LIFE AND HEALTH" (IDLH). THE <br /> M= LM DEFINES THE MAXIMUM CONCENTRATION OF A SUBSTANCE TO <br /> WHICH ONE CAN BE EXPOSED DURING AN 6 HOUR PERIOD WITHOUT SUFFERING <br /> SIGNIFICANT HEALTH EFFECTS. THE CEILIN LIWi;' IS THE <br /> CONCENTRATION LEVEL THAT CANNOT BE EXCEEDED AT ANY TIME; i.e.,•A <br /> SUITABLE RESPIRATOR MUST BE WORN IF CONCENTRATION VALUES REACH THE <br /> CEILING LIMIT. THE REPRESENTS A MAXIMUM CONCENTRATXON <br /> FROM WHICH ONE COULD ESCAPE WITHIN 30 MINUTES OF RESPIRATOR <br /> FAILURE WITHOUT EXPERIENCING ESCAPE-IMPAIRMENT OR IRREVERSIBLE <br /> HEALTH DAMAGE. IDLH VALUES ARE NOT LISTED FOR SUBSTANCES THAT ARE <br /> POTENTIAL HUMAN CARCINOGENS. <br /> PUSTANgE EXPOSURE LIMIT CEILING LIMIT IDLE <br /> BENZENE 0.1ppm (8hrs) Ippm (15min) CARCINOGEN ' <br /> TOLUENE 100ppm (10hrs) 200ppm (10min) 2000ppm <br /> XYLENE 100ppm (8hrs) 200ppm (10min) 1000ppm <br /> f <br /> ETHYL BENZENE 300ppm (8hrs) N.A. 2000ppm <br /> TETRAETHYL LEAD 0.0067PPM N.A. 3.6ppm <br /> PROLONGED EXPOSURES TO CONCENTR:,TIONS ABOVE THE LIMITS NOTEt MAY <br /> AFFECT THE CENTRAL NERVOUS SYSTEM, CARDIOVASCULAR SYSTEM, <br /> RESPIRATORY SYSTEM, EYES, SKIN, KIDNEYS, BONES AND BONE MARROW. <br /> RESEARCH HAS SHOWN THAT BENZENE IS A KNOWN CARCINOGEN. <br /> IMMEDIATE SYMPTOMS OF OVER-EXPOSURE INCLUDE: EYE IRRITATION, NOSE <br /> AND THROAT IRRITATION, HEADACHE, NAUSEA, DIZZINESS, DROWSINESS, <br /> WEAKNESS, CONFUSION, EUPHORIA, EXCITEMENT, STAGGERED GAIT, <br /> ABDOMINAL PAIN, RESPIRATORY DIFFICULTIES, MUSCLE FATIGUE, AND . <br /> COMA. <br /> DUE TO THE INHERENT PHYSICAL DANGER OF WORKING IN THE VICINITY OF <br /> MOVING HEAVY MACHINERY, ALL PERSONNEL WILL WEAR HARDHATS AND STEEL <br /> TOED FOOTWARE AT ALL TIMES. <br /> PERSONNEL EXPOSURES TO EXCESSIVE JOB-RELATED HAZARDS ARE EXPECTED <br /> TO BE MINIMAL USING THESE SAFEGUARDS. <br /> IT SHOULD BE NOTED THAT SUMMER TIME HEAT MAY INITIATE WEATHER <br /> STRESS-RELATED PROBLEMS AND DECREASE PRODUCTIVITY ON THE JOB SITE. <br /> --;- - SMOKING-IS-PROHIBITED-AROUND-OR_NEAR-THE-WORK_AREA._ --T_- <br />