Magnetic Field Surveys

["Sue M. Dupre" <DUPRE%PUCC.bitnet@vmd.cso.uiuc.edu>]

Good Afternoon!  I am looking for names of consultants, reasonably near the
NYC-Princeton-Philadelphia metropolitan area, who could do a magnetic field
survey for us.  We have two superconducting NMR magnets (500 Mhz and 600 MHz)
both located in the same room and used for chemical research.   We have gen-
eral information from the manufacturer which shows that the 5 Gauss isofield
line is primarily within the magnet room, but not entirely.  Some of it sur-
faces into the floor above.  Because some administrative staff within the
building have expressed concern and bwecause my office does not have the capa-
bility to make magnetic field measurements, that department would like to hire
a consultant to do a survey.  Any suggestions?

Just to make this clear, we know that no one will be exposed to magnetic
fields approaching the limits set out under the various existing guidelines
but it is becoming important to demonstrate and document our claims.

As always, thanks for your help!

Sue Dupre/Health Physicist/Princeton University
dupre@princeton.edu