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where expertise comes together
- since 1996 -

Materials Research Institute
Consulting to the NDT industry.
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Technical Discussions
sabir
sabir
20:25 Apr-07-2015
RT

what is time of replacement of processing chemicals for manual processing unit fir industrial radiography as per any standard or recommended practics r guide line.
please give refrence

 
 Reply 
 
Michel Couture
NDT Inspector,
consultant, Canada, Joined Sep 2006, 868

Michel Couture

NDT Inspector,
consultant,
Canada,
Joined Sep 2006
868
01:10 Apr-09-2015
Re: RT
In Reply to sabir at 20:25 Apr-07-2015 (Opening).

Sabir,

Many factors will affect the longevity of your chemicals. One is the temperature you keep them at. Is your set up in a lab or is it a dark room in the back of a truck (portable). Temperature variation will have an effect on them. Another variable is the number and size and type of film you are processing. You should be able to tell when your films do not turn out properly after processing (under processing) when all your parameters have been met. Since I don't know which brand you are using, I recommend contacting your supplier for best information concerning your chemicals.

 
 Reply 
 
Tim
Tim
22:24 Apr-09-2015
Re: RT
In Reply to sabir at 20:25 Apr-07-2015 (Opening).

My experience has been (with the best conditions), and as Michel has already mentioned, is about 90 days after being mixed.

 
 Reply 
 
S S Ananthan
Consultant,
RAA Tech Solutions, India, Joined Jun 2000, 36

S S Ananthan

Consultant,
RAA Tech Solutions,
India,
Joined Jun 2000
36
14:26 Apr-14-2015
Re: RT
In Reply to sabir at 20:25 Apr-07-2015 (Opening).

Normally the supplier will be able to give the quantity of film which can be processed before replacement. However, as Mr Couture has correctly said, it depends your storage conditions. Best way would be to take a standard exposure and process it whenever it is doubtful and confirm the processing.

S S Ananthan

 
 Reply 
 

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