Background for the rules in the laboratory. Safety rules for work in the electrical laboratories. Working permission

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1 Krisztina Leban & Ewen Ritchie e mail: kle@et.aau.dk, aer@et.aau.dkaau Departmant of Energy Technology, Aalborg University 1

2 Topics Background for the rules in the laboratory Safety rules for work in the electrical laboratories. Working permission 2

3 Background New Danish rules in 1993 for work with heavy current and high voltages, with increased demands on safety in laboratories. Contact with non isolated wires and plugs is the focus. An electric shock is now illegal. The2001 budget granted money for the improvement of safety in the laboratories. 3

4 Safety rules for work in laboratories with voltages exceeding 25V AC and 60 V DC Purpose To prevent accidents To contribute to making the laboratories a safe work place The safety rules comply with the rules in the Stærkstrømsbekendtgørelsen, Chapter 813, concerning installations in electrical service rooms, and Chapter 411 concerning protection against direct and indirect touching and chapter 412 concerning direct touching. 4

5 Avoid Electrocution!! + = 5

6 Effect of Current Through the Body Burns tissue resistance Muscles contract hand muscles Ventricular fibrillation loss of rhythm Neurological effects heart and lungs 6

7 Safety rules for work in laboratories with higher voltages than 25V AC and 60 V DC These rules apply to Pontoppidanstræde 105, 107, 109. Two different sets of rules dependent on which laboratory you are working in: E LAB or M LAB But the main rules are the same. Safety rules and working permission forms are found at: On the IET webpage 7

8 Personal safety At least two persons must be present when working on test equipment that is switched on or in operation. 8

9 Be Well Prepared Plan what you want to do Insure that your setup is safe for you and others Protective equipment, ear defenders safety glasses Gloves local air extraction etc. 9

10 Be Well WllPrepared Danish National Safety Requirements dictate that: Read user manuals of equipments to be used. Familiarise yourself with the laboratory supplies, fixed installations or in any special laboratory. If in doubt, contact your supervisor or the responsible laboratory technician. 10

11 Be Well Prepared Danish National Safety Requirements also dictate t that: t New test set ups must not be switched on until they have been approved by your supervisor. This approval must be given on the basis of a written description of the test Including a sketch, a diagram or a drawing of the test arrangement and the test method See Working Place Permit (WPP). 11

warning sign. The sign is taken away when the test set up is out of operation.

12 Be Well Prepared Danish National Safety Requirements dictate also that: Test arrangements, which arein operation orswitched on, must be marked by a yellow warning sign. The sign is taken away when the test set up is out of operation. The yellow warning signs can be borrowed from the responsible laboratory technician. 12

13 Voltage on/off STOP BUTTON 13

14 Safety rules for work in laboratories with voltages higher than 25V AC and 60 V DC Danish National Safety Requirements dictate t also that: t Open experiments with parts at a voltage greater than 60 V dc or 25 V ac to earth must be protected t against accidental contact tby others, by a chain hi fence enclosing the arrangement. The chain must be between 1.1 and 1.3 m above the floor and a minimum of 200mm from the parts concerned. 14

15 Be Well Prepared Danish National Safety Requirements dictate also that: Students t and staff tffworking on the experiment may work inside a chain All other students and staff must be outside the chain. There must be 700 mm freepassage outside the chain. Chains are provided on request by the laboratory personnel. 15

16 Other people s experimental setups Students and staff working on the experiment may work inside the chain hi Do not cross the chain Do not remove any equipment Do not change the setup Do not put power to it 16

17 Be Well Prepared Danish National Safety Requirements also dictate that: Open experimental arrangements with ihexposed parts at voltages at or exceeding 1000 V ac or 1500 V dc are only allowed in laboratories marked Aflåste elektriske betjeningsrum 17

18 Be Well Prepared Danish National Safety Requirements also dictate that: These laboratories are Pon 109/33 (the high voltage laboratory) inside the locked enclosures, Pon 107/25 and Pon 107/37. The doors to these laboratories must be locked during the experiments!! 18

19 Be Well Prepared Danish National Safety Requirements dictate also that: Test arrangements, which h are in operation or switched on, must not be abandoned unless they are properly shielded and marked FARLIG ELEKTRISK SPÆNDING (danger high voltage) or GIV AGT ( look out in operation); Only by agreement with your supervisor or the laboratory personnel. 19

20 Be Well Prepared Danish National Safety Requirements also dictate that: Changes to a test arrangement or circuit must only take place when the power supply is turned off. 20

21 Personal Safety Test arrangements including frequency converters must use a power supply with AC/DC residual current monitored protection. Severallaboratories laboratories have supplies with this kind of protection, and these supplies are marked AC/DC fejlstrømsrelæ. 21

transformer to supply the oscilloscope or any other measuring

22 Personal Safety All test arrangements not galvanically isolated from the network grid must use a galvanically isolated transformer to supply the oscilloscope or any other measuring instruments which h do not have galvanic isolation inside the instrument. 22

23 Personal Safety Rotating machine parts and shafts must always be shielded under operation. Neatness must be maintained i at and around the test arrangement. The test arrangement must be marked with the names of the group members, project group number, study room and the name of the supervisor. 23

24 Watch out for rotating equipment! 24

25 Personal Safety If substances or chemicals are used in the project work the Work Place Operation Instructions for the substances in question must be studied The prescribed instructions must be followed. 25

26 Personal Safety The Work Place Operation Instructions are collected in a yellow binder, marked Arbejdspladsbrugsanvisninger. They are available at Pontoppidanstræde 107 room 27 G (Gallery) and at Pontoppidanstræde 109 room 25 b, or from with a link to 26

27 Smoking is not allowed in the university buildings. Food and drink are not allowed in the laboratories. 27

28 Fixed Installations Only the laboratory personnel are allowed to make changes on other people s l arrangements or remove equipment from other people s arrangements. The supervisor or the laboratory personnel must be informed immediately of df defects and errors. 28

29 Fixed Installations Only the laboratory personnel are allowed to make changes to the fixed equipment, make cross field switching and operate the main switches. 29

30 Equipment Instruments, equipment, components and leads, which are not being used on your arrangement, must be put in the correct place. (Indicated d by the number!) Instruments, equipment, components and leads considered d to be defective must be handed over to the laboratory personnel with a written description of the defect. Defective equipment must be repaired only by the laboratory personnel. 30

31 Equipments When you finished your test, put the equipment in the proper place. Privately owned equipment may be used in the lb laboratory only with special permission from the laboratory personnel. Private use of laboratory equipment special agreement with the laboratory personnel. 31

32 Equipment Instruments and other equipment must only be removed from the laboratory by special agreement with the laboratory personnel. If you remove equipment, you must make sure that your loan is registered by the responsible laboratory technician. 32

33 Loaning Tools Tools removed from the workshop at Pontoppidanstræde 107 room 31, as an exception, for internal use in the laboratory, must always be returned to their place immediately after use. If tools are removed for a long period, you must fill in a loan note and put it in place of the tool which you have removed. 33

May only be removed by agreement with the local

34 Loaning Tools Tools from Pontoppidanstræde 107 room 29 Electrical workshop at PON 109 room 25 b May only be removed by agreement with the local llb laboratory technician, i who will register your loan. 34

35 Opening hours for the Laboratory Monday to Thursday 8:00 15:30 Fid Friday 8:00 15:00. Please note: A properly completed and maintained Work Place Permit (WPP) is necessary to be allowed to work in the laboratory. 35

36 Personal Injury Use the five tenets of first aid: 1. Turn off the power. 2. Give life saving first aid. 3. Call for help. Dial *) In case of an electrical accident, please see the next slide. 4. Give other first aid. 5 C llth ibl l b t t h i i 5. Call the responsible laboratory technician or a member of the safety group 36

37 Personal Injury *) In case of an electrical accident: If a person is exposed to a voltage of more than 40 V AC or 60 V DC, it is absolutely necessary to call for help at 112. You must inform that it is regarding an electrical accident! In the laboratories you may find a plan of the positions of the telephones, emergency telephones and the first aid boxes. Please note that the emergency telephones are for internal use only and

38 IMPROVEMENTS If you have suggestions for improvement of the safety level in the laboratories, please contact the safety group or a member of the Safety Sft Committee Pontoppidanstræde. BE AWARE that students carrying out practical exercises or tests are covered by the Danish Working Environment Law and that the education institution is responsible that all work (exercises and tests) are carried out in a safe and healthy way. 38

39 Pontoppidanstræde 103, 105, 107 marked M LAB EQUIPMENT Ensure that equipment, components, fittings and hydraulic hoses, etc, are designed for the desired pressure, flow and temperature. Hydraulic hoses are colour marked: red for 350 bar and blue for 200 bar. Instruments, equipment, hoses and lines, etc., which are not being used on your set up up, must be cleaned immediately and put in the correct place. 39

Safety rules for work in laboratories with voltages higher than 25V AC and 60 V DC If instruments, equipment, components, hoses and lines are considered defective, it is important that

Instruments and other equipment may only be removed from the laboratory by special agreement with the lb laboratory personnel.

40 Safety rules for work in laboratories with voltages higher than 25V AC and 60 V DC If instruments, equipment, components, hoses and lines are considered defective, it is important that you hand it to the lb laboratory personnel together th with a written description of the defect. Defective equipment must be repaired only by the laboratory personnel. Instruments and other equipment may only be removed from the laboratory by special agreement with the lb laboratory personnel. If you remove equipment, you must make sure that your loan is registered by the local laboratory technician. When you have finished your test, remember to clean at and around the set up. Also remember to clean the equipment and put all equipment in its place. 40

41 Signs in Danish Fire alarm Break lid Press the button Fire Extiguisher i Smoking and Open fire not allowed 41

42 Signs in Danish Dangerous Electric Voltage Electricaloperating room. Only authorised persons can enter Laser Rays 42

43 Signs in Danish Cylinder Extinguishes Fire Heart Starter (Defibrillator) Emergency Exit 43

44 No Food or Drinks in the Lab 44

45 Tie hair back!! 45

46 No loose clothes! 46

47 No Playing around! No practical Jokes! 47

48 No Playing arround! No practical Jokes! 48

49 Soldering Stations Use the air extractor (lead vapours are poisonous) Magnifying glass available Do not burn yourself! 49

50 Do not use faulty equipment! 50

51 Report it!!! 51

52 Work Place Permit A form you fill out and get approved Enables access to the laboratory To ensure that the safety rules are kept, so a safe working place can be maintained. i To ensure that the student obeys the rules concerning being instructed personnel. 52

53 Work Place Permit 53

54 Safety Committee Safety Committee Members Department 14 Technical/administrative e staff, Anne Schmidt, asc@et.aau.dkaa Electricity; section 1, 3 & 5, Walter Neumayr, wn@et.aau.dk Mechanics; section 6, Mads Lund, mal@et.aau.dk Gas; section 2 & 4, Søren Juhl Andreasen, sja@et.aau.dk committee/ Observer of the Safety Comittee 'Pontoppidanstraede' and Chief of Security at Aalborg University. Arne Nielsen, tel

55 55

Safety Regulations and Procedures

Safety Regulations and Procedures for PowerLabDK, DTU Lyngby Campus (for High Voltage testing additional regulation apply) 1. SAFETY REGULATIONS 1.1 Purpose To prevent accidents Contribute to make the