1. Defibrillator Implants: Bruce Murdoch PhD CHP CLSO Argonne National Laboratory Argonne, IL USA btmurdoch@anl.gov AIHce 2011, Portland OR Roundtable Session RT 201 Occupational Exposure to Electromagnetic Radiation

2. Typical ICD Device Dimensions: 2” X 2.5” X 0.2” AIHce 2011, Portland OR 2

3. Implant Placement  EM Vulnerabilities  Leads  Control Unit  Failure Modes  False Trigger  Stopping AIHce 2011, Portland OR 3 Source: www.defibrillator-help.comwww.defibrillator-help.com

4. AIHce 2011, Portland OR 4 CASE STUDY Where? APS (Advanced Photon Source) Who? Accelerator Operator w/ICD Why? Work Clearance

5. AIHce 2011, Portland OR 5

6. 6

7. 7 APS Control Room

8. Manufacturer Test Standard  ANSI/AAMA PC69 - 2007 AIHce 2011, Portland OR 8

9. Typical Manufacturer (Medtronic) Exposure Limit Recommendations  Static B-FieldB ≤ 0.5 mT (5G)  50/60 HzB ≤ 0.1 mT (1G) E ≤ 6000 V/m  ≥ 10 kHzB ≤ 1.25 mT (12.5 G)  R-F E-Field (≥ 150 kHz)E ≤ 100 V/m AIHce 2011, Portland OR 9

10. ACGIH 2010 TLV Book Exposure Limit Recommendations  Static B-Field B ≤ 0.5 mT (5G)  ELF (5 Hz–2kHz)B ≤ 0.1 mT (1G)  VLF (2kHz–400 kHz)No recommendation  R-F (100 kHz–3GHZ) E ≤ 3-10 V/m AIHce 2011, Portland OR 10

11. Static B-Fields MetroLab Model ETM-1 3-Axis Magnetometer AIHce 2011, Portland OR 11

12. ELF Holaday HI-3627 ELF Magnetic Field Meter w/ HI-3602 Probe 30 Hz – 2 KHz AIHce 2011, Portland OR 12

13. VLF Holaday HI-3637 VLF Magnetic Field Meter w/ HI-3091 Probe 2kHz – 400 KHz AIHce 2011, Portland OR 13

14. R-F Narda NBM-520 RF Survey Meter w/ EF3091 E-Field Probe 100 kHz – 3 GHz AIHce 2011, Portland OR 14

15. Spectrum Coverage AIHce 2011, Portland OR 15 RF

16. AIHce 2011, Portland OR 16 The Instrument Ensemble

17. Survey Plan  Daily Control Room work area  Weekly maintenance walkthroughs  ESH Coordinator guidance  84 specific survey locations plus area sweeps  Full spectrum survey at each location AIHce 2011, Portland OR 17

18. Control Room Displays and Instruments AIHce 2011, Portland OR 18

19. Control Room Panels AIHce 2011, Portland OR 19

20. RF Distribution System AIHce 2011, Portland OR 20

21. Electrical Panels ELF, VLF: B ≤ 0.1 G RF: E ≤ 4 V/m AIHce 2011, Portland OR 21

22. Electrical Distribution Room ELF: B ≤ 0.4 G @ 6 inches from transformer RF: E ≤ 4 V/m AIHce 2011, Portland OR 22

23. Mezzanine RF System  Freq = 325 MHz  E(RF) up to 3.5 V/m @ 6 in. AIHce 2011, Portland OR 23

24. Power Control Systems AIHce 2011, Portland OR 24

25. Pulser Power Transformers AIHce 2011, Portland OR 25

26. Pulser Power Transformers AIHce 2011, Portland OR 26

27. RF Distribution Waveguides Freq = 325 mHz AIHce 2011, Portland OR 27

28. Klystron Gallery Freq = 2.865 Mhz AIHce 2011, Portland OR 28

29. Linac Klystrons Freq = 2.8565 GHz E(RF) = 2 V/m @ 1 ft AIHce 2011, Portland OR 29

30. Case Study Results  Employee barred from –Fundamental RF Room: 7 V/m RF –Electrical Distribution Room: 4 V/m RF  Cautions –Some instrument racks: 4 V/m RF @ 12” –Some waveguides: 3.5 V/m RF @ 12” AIHce 2011, Portland OR 30

31. Credits  Technical Assistance –Mary Malik –Adam Sauter  Photography –George Joch –Edmund Chang AIHce 2011, Portland OR 31