1. INDUSTRIAL HYGIENE External EHS Expert Panel Workshop
4/2016
Marek Bizdra EHS Specialist
Roman Vrána EMP Specialist

2. Industrial hygiene Safety Workshop 4/2016
Contain:
Noise
Oxygen deficiency
Chemicals and mixtures
Vibration
EMP (electromagnetic pulse)
Magnetic field

3. Noise
Locations:
Mechanical workshop in ELI 2 (Compressed air, Compressor, Lathe, Milling machine, Grinder, Drill etc.) we measured it 87 dB
Control room (we will measure with 55 dB)
Engine rooms (we will see) apox. 70 dB

4. Locations considered:
Oxygen deficiency
Locations considered:
Interaction chambers
Laser compressors
Technological shafts and channels
Sludge tanks and oil separators (H2S)
Controls:
Procedures and permit
Special training
Portable oxygen detector

5. Hazardous Chemicals Types Controls
Toxic (H2S, Methanol, Benzene etc.), Corrosives (acids), Volatile compounds, Disinfectants, Heavy metals etc.
Controls
Chemical safety manual, IH Plan
Training plans
Workplace monitoring (permanent and occasional incl. emergency)
PPEs
Qualified personnel - Petr and Hanka

6. Hazardous Chemicals Washing table in ELI 2
Washing of parts during the processing
Volatile organic substance
Vapors can generate explosive atmosphere
Permanent vs. portable monitoring
PPEs
Hazardous waste management

7. Vibrations
Vacuum pumps
Turbomolecular pumps on the vacuum chambers – approx. 100 pc.
Roughing pumps in plant rooms - approx. 25 pc.

9. EMP (electromagnetic pulse)
Pulse Power Area (L.2.09):
Transient electromagnet field up to 2 kV/m from 1 to 30 MHz
Transient magnetic field up to 180 A/m from 500 Hz to 5 kHz.
Target Areas (Experimental Halls E1, E2, E3, E4, E5 and E6):
Transient electromagnetic field up to 250 kV/m in the frequency range 30 MHz to 20 GHz.

10. EMP (electromagnetic pulse)
Protection:
1.5 m concrete wall can provide greater than 80 dB shielding over a broad range of frequency
IEC 60364, Electrical Installations for Buildings.
IEC 61000‐5‐2, Electromagnetic Compatibility.
EN 62305, Protection against Lightning.
Building Earthing Network
Main earth terminal for the building 400 V supply.
Main 400 V switch‐board.
Lightning protection system as required by IEC
Extraneous metalwork to reduce touch voltages.
Laser equipment e.g. terminal every 5 m in floor trenches.
EMC filters for pulse power equipment.

11. EMP (electromagnetic pulse) - concept

12. EMP (electromagnetic pulse)
The distribution of electric field (RMS value)

13. EMP (electromagnetic pulse)
The distribution
of electric field
(RMS value)

14. Magnetic field
E2 – Betatron (intensity aprox. 1 T) IN THE INTERACTION CHAMBER
E5 – LUX (intensity aprox. 1 mT) IN THE ESPEC ELECTRON SPECTROMETR
E5 – HELL (intensity aprox. 1.2 T) IN THE HELL INTERACTION CHAMBER

15. Magnetic field
E5 – HELL
Conservative values of spectrometer parameters were used:
1.2 T magnetic field;
50 cm long, 20 cm wide and 6 cm
high gap between the electromagnets;
iron core of the coils;
copper wires of the coils:
10 kA (1 A in 10k turns), 1 mm wire.

16. Questions
What should be covered by IH plan?
How do you perform field measurements?
How to manage magnetic field hazard?
Do you know about incidents with vacuum pumps?

17. Thanks for your attention