Universiteit Leiden AMD, Faculteit der Wiskunde en Natuurwetenschappen Peter Roemelé Safety Officer Center of safety and environmental matters Arbo- &

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Universiteit Leiden AMD, Faculteit der Wiskunde en Natuurwetenschappen Peter Roemelé Safety Officer Center of safety and environmental matters Arbo- & Milieudienst W&N (AMD) Faculty of Mathematics and Natural Sciences Leiden University General laboratory Safety

Universiteit Leiden AMD, Faculteit der Wiskunde en Natuurwetenschappen INTRODUCTION Kinds of laboratory risks Handling chemicals, MAC values Procedures for incidents or accidents Different kinds of waste Safety regulations

Universiteit Leiden AMD, Faculteit der Wiskunde en Natuurwetenschappen How to control risks Behaviour Procedures/ protocols Good lab practice Safety regulations LION

Universiteit Leiden AMD, Faculteit der Wiskunde en Natuurwetenschappen Kinds of risks in LION environment Risks with magnetic fields Risks with cryogenics & safety Risks with lasers Chemical risks

Universiteit Leiden AMD, Faculteit der Wiskunde en Natuurwetenschappen Risks with magnetic fields (DC) Telemetric effects and hazards: Electronics:Pacemakers Mechanical:Flying equipment Credit cards:Lost of credits

Universiteit Leiden AMD, Faculteit der Wiskunde en Natuurwetenschappen Risks with cryogenic liquids Hazards: Displacement of oxigen: suffocation (1L N2 liquid gives 750L gas) Burning: eyes, skin Prevention: Don’t work alone safety glasses, gloves

Universiteit Leiden AMD, Faculteit der Wiskunde en Natuurwetenschappen Risks with Lasers Hazard: Reflections Burns Prevention: Avoid reflections Ware safety glasses Don’t look into the beam

Universiteit Leiden AMD, Faculteit der Wiskunde en Natuurwetenschappen General Risks Chemicals Know the risks: Gather information (MSDS) Control risks: Experimental design, Good ventilation: fume hood Prevent Risks: Personal protection devices Fire protection

Universiteit Leiden AMD, Faculteit der Wiskunde en Natuurwetenschappen Chemicals and risk analyses Risk = Scenario x hazard x frequency Hazard Kind of chemical or compound Concentration Exposure time Scenario Bench or fume-hood Protocol

Universiteit Leiden AMD, Faculteit der Wiskunde en Natuurwetenschappen The TWA or MAC value Time Weighted Average (5 x 8 Hours/week) Maximal Acceptable Concentration ppm or mg/m³ 8 hour/day, 5 days/week, 40 weeks per year Vapory pressure (mbar/M 3, 20 °C ) ≈ 0,25 x MAC or TWA (ppm or mg/M 3 )

Universiteit Leiden AMD, Faculteit der Wiskunde en Natuurwetenschappen RISK symbols RISK symbols

Universiteit Leiden AMD, Faculteit der Wiskunde en Natuurwetenschappen Information about chemicals Written on the bottle or box Internet: MSDS (Material Safety Data Sheets) Handbook of Chemistry & Physics In doubt? Ask your mentor!

Universiteit Leiden AMD, Faculteit der Wiskunde en Natuurwetenschappen Information about laser dye Nile Blue A perchlorate CAS-nummer: Internet: List of casnummers for safetydatasheetsList of casnummers for safetydatasheets MSDSMSDSMSDS

Universiteit Leiden AMD, Faculteit der Wiskunde en Natuurwetenschappen In case of an accident ? Warn the assistant or call 5678 (orange label on the phone) Tell the receptionist Your name Roomnumber What happened What kind of help you need

Universiteit Leiden AMD, Faculteit der Wiskunde en Natuurwetenschappen Emergency routing All emergency exits are closed by magnetic locks. In case of fire, these doors will be unlocked

Universiteit Leiden AMD, Faculteit der Wiskunde en Natuurwetenschappen Kinds of dangerous chemical waste Liquid Chemical waste: Solid Chemical waste: depends on type of chemical eg. some gels Don’t flush chemicals down the drain. >Organic waste (red) >Anorganic Waste (black) >Halogens (Blue) >Oil (Green)

Universiteit Leiden AMD, Faculteit der Wiskunde en Natuurwetenschappen Other dangerous waste Sharp waste: Needles, rasorblades: In sharp container Glass and pipettips: In seperate box

Universiteit Leiden AMD, Faculteit der Wiskunde en Natuurwetenschappen Peter Roemelé  Room HB 021 (groundfloor Gorlaeustower, follow yellow plates)