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A few technical hints and tips for the laboratory…..

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Presentation on theme: "A few technical hints and tips for the laboratory….."— Presentation transcript:

1 A few technical hints and tips for the laboratory…..

2 In the laboratory……… Always wear protective glasses and a laboratory overcoat!

3 The problem with the glasses: Working with protective overcoat and with your own glasses….. ….is unfortunately not enough!

4 The big mistake: 90% of people with glasses consider these to be as good as safety glasses! Safety glasses with corrections are available upon request! Ask your group's safety advisor for information! Correct: People with glasses need to wear safety glasses too!!

5 This is how it should be!

6 Operation of the fume hood:

7 Exhaust air control for the fume hood: Turn on exhaust timer! Turn off exhaust timer! Turn on light! Silence the acoustic alarm! Window Too high! Not enough exhaust air inform Large exhaust power for emergency cases

8 Emergency: Close the window!

9 Emergency: Alarm: Tel 888 Alarm-schedule: Who are you? Which emergency do you have? When and where did the emergency happen? How many people are affected? Behaviour: One person: 1. Alarms 2. Rescues (watch your own safety!) Several people:1. One person alarms and co-ordinates; 2. the other people rescue and help!

10 Personal injury alarm: In case of acute accident (severe injuries or illness): 1. priority: Always call Tel 888, and mention that an acute accident has happened. The alarm –office will immediately call for an ambulance and paramedical assistants for the HCI building. In case of intoxication: call the toxicological information centre for further instructions! After alarming, the 1. priority is to give first aid to the injured person. Organize someone to welcome the ambulance personnel and to guide these to the place of accident.

11 In case of non-acute accidents (light injuries): 1. priority: Always alarm Tel 888. The alarm-office will call for the paramedical assistants, but will not call for an ambulance. After alarming, case a): If no paramedical assistant arrives within 10 min., call Tel 888 again! case b): The patient recovers and could be helped locally, but needs to go into hospital anyway: the patient feels well enough to use public transport (bus) or a taxi (accompanied by a colleague) to a hospital or to a doctor. The costs for a taxi will be reimbursed by the safety-, health- and environment commission (dont forget your receipt). case c): The patient recovers and could successfully be treated locally; inform the alarm-office that everything is fine!

12 The cooling water module Main valve: 0 = closed; 1 = open Clockwise: = less water Counterclockwise = more water Regulation valve:

13 The cooling water module… Cooling water return Cooling water supply Cooling water return

14 Always tighten cooling water connections by hand…..

15 Only ever fix the cooling water connections by hand! This is strong enough! Nooo!!!

16 Close the main valve if you do not need coolong water anymore (reduces flooding risk and saves energy) Never open/remove cooling water connections when the main valve is still in ist 1 position…

17 In case of leaking cooling water systems: inform In case of emergencies: Close the main cooling water valve for the laboratory in the supplies duct in the corridor! Inform all other users! Your group's safety advisor can give you more information! If you don not need the cooling water anymore, remove the connections or provide a closed loop cooling water circuit!

18 Wrong usage of cooling water modules are the main reason for most of the laboratory floodings!

19 Always secure every cooling water hose connections with clamps!

20 Such tube connections are forbidden! and please….. Never use such red rubber hoses for cooling water connections!

21 The vacuum module….. Vacuum regulation valve Blind seal

22 Always use a safety bottle between the vacuum point of use and the vacuum module! Safety bottle Vacuum point of use

23 Nooo!!! Working without a safety bottle…

24 Waste disposal through the vacuum module………. Noo!!!

25 and the result….. ETH-Finances: minus 3000 CHF

26 Liquid Mercury ETH-Finances: minus 150 CHF minus 700 CHF minus 3000 CHF ……….

27 This is perfect!

28 The gas module: Gas main valve – on/off Clockwise = close gas supply Counterclockwise = open gas supply Gas pressure regulator Counterclockwise = reduce pressure Clockwise = increase pressure Never use tools to open/close valves!!!

29 The problem with the gas module….. Flow regulator (from the chemistry shop!) You can define a certain pressure for your equipment (e.g. gas-chromatograph) …. …but for defining a certain flow, e.g. for your glass equipment, you need a flow regulator!

30 The mobile waste disposal units Container for non-chlorinated solvent wastes Container for chlorinated solvent wastes

31 Tubes and cover lid connections should always be sealed Never overfill the containers!!! In case of leaks: inform ! Please never open the container covers and tube connections!

32 Always dispose of your waste in the appropriate way…. - No alkali-wastes, please!!! - No reactive materials, please!!

33 No solid wastes in the box… Please collect solids (e.g. silica gel), acids, bases, toxic wastes, etc.) in special separate containers! Ask your group's safety advisor for more information!

34 This is perfect!

35 Please clean the mobile waste disposal units regularly…. Please never let them get like this!

36 Chemical storage cabinets:

37 Immediately replace these dangerous shelf holders….

38 for these, which you can get at the chemistry shop…

39 Please store your chemicals properly… Not like this, with strong acids next to sodium cyanide in a plastic bag…

40 Refrigerators: Please defrost them regularly!

41 The emergency balconies: Partyyy!! Please click on after one minute of thought……

42 Please keep escape routes free. In case of fire, small obstructions can become deadly traps because of the smoke. Never block the emergency exits.

43 Balcony- and lab-doors may not be kept open! It is forbidden to use the balconies through the emergency doors from the pratical work laboratories (except of course in an emergency). It is allowed to use the balconies from the research laboratories (excluding the practical work laboratories), as long as you close the emergency door behind you.

44 This is perfect! Yeahh!

45 Accept your own responsibility! Do not blame other people without a valid reason…

46 But do not worry. It will not become this bad!

47 Technical problems? Safety or environmental problems?

48 We wish you a pleasant stay!

49 HCI problem management ETH Hönggerberg 8093 Zürich Contact person: Thomas Mäder HCI H

50 HCI Safety-, Health- and Environment Commission ETH Hönggerberg 8093 Zürich Chairman: Prof. K. Hungerbühler Contact person: Thomas Mäder HCI H

51 THE END Thomas Mäder Translated by Dr. O. Homan


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