Re: Static Magnetic Field Gu

[Michelle Wakelam <Michelle.Wakelam@adm.monash.edu.au>]

On   Wed, 08 May 1996 you wrote

>         Reply to:   RE>Static Magnetic Field Guidelines
> 
> More recent guidance can be found in International Commission on Non-Ionizing
> Radiation Protection. "Guidelines on Limits of Exposure to Static Magnetic
> Fields," Health Phys. 66, 100-106 (1994).  ICNIRP specifies:
> 
> o	A 2000 gauss time-weighted average exposure criterion,
> 
> o	30 gauss as where metallic implants and tools can become hazardous,
> 
> o	10 gauss as where credit card stripes can be erased, and
> 
> o	5 gauss as the pacemaker/electronic implant warning criterion.
> 
> The 600 gauss limit was developed by Tom Tenforde, now with PNL, and I.  I
> actually calculated the number.  The background for the 600 gauss limit is
> found in G. C. Miller. "Exposure Guidelines for Magnetic Fields," J. American
> Industrial Hygiene Association, 48, 957-968 (1987).
> 
> LLNL now uses the ICNIRP limit of 2000 gauss and I have written to the Chair
> of the Physical Agents TLV Committee advising them to adopt the 2000 gauss
> limit.
> 
> If there are further questions, please contact me at:
> 
> Internet: gordon.miller@quickmail.llnl.gov
> 
> Lawrence Livermore National Laboratory, P. O. Box 808  (L-289), Livermore, CA 
> 94551-0808
> 
> Phone (510) 423-8036
> Fax (510) 423-1086
 
Is this 2000 Gauss or 2000 milli gauss?

Regards

 
Michelle Wakelam
Occupational Hygienist and 
Assistant Radiation Protection Officer
Occupational Health, Safety and Environment
Monash University, 
Wellington Road,
Clayton, Victoria, 3168
Australia
email: Michelle.Wakelam@ADM.monash.edu.au