RE: Smoke Alarms & Photon Beams Don't Mix

["Carolan, Martin" <CarolanM@iahs.nsw.gov.au>]

Why not keep the ionisation type smoke alarm (with it's sensitivity
advantage) but relocate it out of the plane of the primary beam as the linac
rotates. Surely it is unlikely to trigger just on the basis of the scattered
photons (or photoneutrons at 18MV). In our experience we have not had
problems so long as the sensor is not in the primary beam.

Martin Carolan
Senior Physicist
Department of Nuclear Medicine (and sometimes Radiotherapy!!)
Wollongong Hospital
Wollongong NSW 2500
AUSTRALIA
email carolanm@iahs.nsw.gov.au <mailto:carolanm@iahs.nsw.gov.au> 
phone 61 2 4222 5224
fax 61 2 4222 5238
internal page # 252.
 
---------------------------------------------------------------------------------------------------------------------
*********IMPORTANT NOTICE**********

The information contained within this e-mail message should be considered 
as confidential and/or privileged.  It is intended solely for use by the 
addressee named above.

If you have received this message in error you are hereby notified that you 
must not copy, duplicate, forward, print or otherwise disseminate any 
information contained within this E-Mail.  Please ensure that this e-mail 
is deleted and please send a message to the postmaster at the
Illawarra Area Health Service via mailto:

POSTMASTER@iahs.nsw.gov.au.

This message has been scanned for Viruses!!

---------------------------------------------------------------------------------------------------------------------
************************************************************************
The RADSAFE Frequently Asked Questions list, archives and subscription
information can be accessed at http://www.ehs.uiuc.edu/~rad/radsafe.html