NDT of diagnostic x-ray rooms

["David Thiele" <thieled@health.qld.gov.au>]

dear all

we have a need to perform NDT of diagnostic x-ray rooms (perhaps up to 2.5 mm lead) in remote locations i.e. need a procedure which is simple, versatile and very transportable.  we are thinking of using a sealed source of Am-241 in a suitable container & a sensitive survey meter-type detector.

i have 2 questions:

1.  is this the optimum method?  what do others do?

2. where can we obtain a >= 500 mCi Am-241 source?

many thanks! 
 =================================== 
 David Thiele PhD 
 Manager, Statewide Medical Physics 
 Biomedical Engineering & Health Technology Services (7D) 
 Royal Brisbane Hospital 
 Herston  Qld  4029 
 Australia 
  ---------------------------------------------------- 
 Phone: +61 7 3636 7896 
 Fax: +61 7 3636 3518 
 Email: thieled@health.qld.gov.au 
 ===================================

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