[ RadSafe ] radsafe request for slim gammaray tool

[Han J. Limburg]

Dear Dr Toole,

With this I would like to respond to your call concerning the need for an underwater spectral gamma tool. We (Medusa Explorations BV from Holland) could provide you with a system that does meet the size constraints you listed in your note on radsafe. We could provide an underwater gammaray system consisting of a 38 mm diameter BGO crystal mounted inside a 50mm outer diameter housing, including a "borehole type" multichannel acquisition system. This system would allow you actually to work with cable lengths well over 60 m (depending on the configuration, even well over 1km length). As a company, we have been using systems like the proposed system in underwater surveys intensively over the last decade, both seaborne as well in sweetwater.

If you are interested, we would be happy to provide you with detailed information.

Yours sincerely,

Han Limburg
Medusa Explorations BV


  ----- Original Message ----- 
  From: "Marcel Schouwenburg" <M.Schouwenburg at tudelft.nl>
  To: <radsafe at radlab.nl>
  Cc: <joe.toole at ukaea.org.uk>
  Sent: Tuesday, September 11, 2007 4:26 PM
  Subject: [ RadSafe ] Subsea detector required
  
  
  Posted on behalf of Dr Joe Toole (e-mail: joe.toole at ukaea.org.uk )
  
   
  
  Please respond directly to him (cc to RadSafe appreciated) and not to me
  (Marcel Schouwenburg).
  
  ------------------------------------------------------------------------
  -
  
   
  
  Dear members
  
  UKAEA are planning to undertake some investigative work offshore of
  Dounreay in Oct/Nov 2007. Part of this work would need a radiation
  detector with spectral capability (NaI, CdZn, BGO..) which is protected
  for
  work in seawater up to 60 metres depth. It would also need to fit down
  an
  unlined borehole about 75mm wide, and preferably attached to a 1-inch
  wide
  camera, so the narrower the detector the better.
  Our regular suppliers have been unable to provide the kit, either
  because
  their detector/housing is too large, or they cannot provide long enough
  signal cable (we need approx 100 metre cable to ship).
  Can anyone recommend a supplier of detector and associated MCA, either
  to
  purchase or to borrow for a couple of months?
  
  kind regards
  
  Joe Toole
  
  Dr Joe Toole
  Environmental Projects Department
  D2003
  UKAEA Dounreay
  Caithness
  KW14 7TZ
  phone 01847 806092
  fax 01847 806901
  
   
  
  ------------------------------------------------------------------------
  -
  
  Marcel Schouwenburg
  Head / Lecturer Training Centre Delft, Health Physicist, expert level 2
  RadSafe Moderator & Listowner
  National Centre for Radiation Protection (Dutch abbr. NCSV)
  Manager Quality Assurance Reactor Institute Delft (RID)
  
  
  Delft University of Technology
  Faculty of Applied Sciences / Reactor Institute Delft
  Mekelweg 15
  NL - 2629 JB  DELFT
  The Netherlands
  T: +31 (0)15 27 86575
  F: +31 (0)15 27 81717
  M: +31 (0)6 551 950 05
  E: m.schouwenburg at tudelft.nl <mailto:m.schouwenburg at iri.tudelft.nl> 
  
   
  
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DISCLAIMER:
Medusa Explorations BV noch de afzender aanvaardt enige aansprakelijkheid voor de gevolgen van een verminkte  weergave c.q. vertraagde of gebrekkige overbrenging c.q. ongeautoriseerd gebruik van het e-mailbericht. Medusa  Explorations BV neemt redelijke maatregelen om te voorkomen dat middels dit e-mailbericht virussen worden  overgebracht, maar is niet aansprakelijk in het geval dit toch voorvalt.