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CHEMICAL SAFETY LEVELS FOR SCHOOL LABORATORIES



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CHEMICAL SAFETY LEVELS FOR SCHOOL LABORATORIES A SYSTEM FOR IDENTIFYING RISKS UPON ENTERING A LAB 1 CLASSIFICATION OF LABS CSL PROPOSED AS A GUIDELINE TO ASSIST CHO AND STAFF CSL DETERMINED BY RISK OF EXPOSURE TO HAZARDOUS CHEMICALS FACILITY SURVEY TYPES OF PROCEDURES BEING USED 2 CLASSIFICATION OF LABS DESIGNATION BASED ON HAZARDS OF CHEMICALS BEING USED TOXICITY FLAMABIITY REACTIVITY TOXICITY NATURE OF THE WORK OR PROCESSES BEING USED 3 CLASSIFICATION OF LABS DESIGNATION DETERMINED BY CHO AND DEPARTMENT CHAIR DESIGNATION CRITERIA SAFETY EQUIPMENT AVAILABLE EYE WASH DELUGE SHOWER FUME HOOD PURGE FAN PERSONAL PROTECTION EQUIPMENT 4 CLASSIFICATION OF LABS DESIGNATION CRITERIA CHEMICALS BEING USED LAB ACTIVITIES OR OTHER PROCEDURES APPROPRIATE SUPERVISON NATURE OF THE STUDENTS AGE LEVEL OF TRAINING ROOM DESIGN EXITS CLEAR AISLES 5 CSL 1 LOW RISK WORK DOES NOT REQUIRE SPECIAL DESIGN FEATURES OR CONTAINMENT EQUIPMENT CHEMICAL USE HIGHLY RESTRICTED LOW HAZARD REAGENTS SMALL VOLUMES 6 CSL 1 LOW RISK WORKERS ALL TRAINED AND USE GOOD LABORATORY WORK PRACTICE FOLLOW DISTRICT POLICY CHP EXPOSURE RISK LOW EXAMPLE INSTRUMENT ROOM 7 CSL 2 MODERATE RISK CHEMICALS WITH LOW TO MODERATE RISK USED OPENLY REAGENTS OF HAZ LEVEL 1 AND 2 VOLUMES OF HAZ LEVEL 3 REAGENTS ARE RESTRICTED L LIQUIDS 0 5 KGM SOLIDS 8 CSL 2 MODERATE RISK HAZARD CLASS 4 REAGENTS NOT PERMITED EXPECT BY PRIOR WRITTEN SPECIAL EXEMPTION FROM CHO RISK LEVEL MODERATE EXAMPLE HIGH SCHOOL CHEM LAB 9 CSL 3 SUBSTANCIAL RISK ENGINEERING CONTROLS REQUIRED FUME HOODS PURGE FANS CHEMICALS OF SUBSTANCIAL AND HIGH 2 3 RISK UNRESTRICTED HAZARD LEVEL 4 REAGENTS PERMITED BUT MUST BE REPORTED 10 CSL 3 SUBSTANCIAL RISK QUANTITIES OF REAGENTS LIMITED BY NEED AND FIRE CODE RISK SUBSTANCIAL CONTROLLED BY ENGINEERING DEVICES MINIMIZING QUANTITIES AND CAREFUL WORK PRACTICES EXAMPLE UNIVERSITY CHEM LAB 11 CSL 4 HIGH RISK SPECIAL ENGINEERING FEATURES AND CONTAINMENT EQUIPMENT WORK PRACTICES WITH MULTIPLE BARRIERS FOR WORKER PROTECTION 12



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