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Radiographic Examination (ASTM E1742) Inspection containing the Acceptable Limits

L

lee01

#1
I have two questions:

1. Do I need a procedure for radiographic inspection, containing the acceptable limits andthat good stuff?
2. Under section 6 (Detail Requirements), I need to put together a detailed written work instruction for each part that will be Radiographed, As I’m new to NDT, I’m not sure of the requirements or the expectations regarding this.

I’m after a couple examples of either, the overall radiographic process/ procedure and the detailed part related written work instruction.

Any information, preferably examples of these would be great, and/ or information on the above standard would be extremely helpful!

Best Regards

Lee01
 

gard2372

Quite Involved in Discussions
#2
I have two questions:

1. Do I need a procedure for radiographic inspection, containing the acceptable limits andthat good stuff?
2. Under section 6 (Detail Requirements), I need to put together a detailed written work instruction for each part that will be Radiographed, As I’m new to NDT, I’m not sure of the requirements or the expectations regarding this.

I’m after a couple examples of either, the overall radiographic process/ procedure and the detailed part related written work instruction.

Any information, preferably examples of these would be great, and/ or information on the above standard would be extremely helpful!

Best Regards

Lee01
Lee,

First off welcome to the cove! :bigwave:

I would hire an outside NDT Radiography Level III consultant. There are several factors dealing with radiation safety that only Certified Level II & III NDT specialists are qualified in. Thus, if you are wanting to do Radiography at your facility, a Radiation Safety Officer must be certified and current to Local and Gov't radiation safety laws and training, a certified vault where the radiography is taking place (depending on the application). Radiation surveys will need to be conducted etc...

As I said before, find out what the inspection criteria is for you customers on their parts regarding indications (cracks) etc... and have the consultant write your entire Radiation QMS with regard to your company/customer product line and hire one or two certified NDT Radiographers Level II's to do the daily processing and inspections. Also, if your radiography system is going to be digital radiography that's great but it's very costly however with regard to traditional x-ray film processing with chemicals, if you don't run an ISO 14001 shop then the costs associated with purchasing and waste disposal of the chemicals over a few years period would have paid for the digital equipment anyhow!

Below are a couple of links about Radiography NDT and radiation safety in England.


http://www.ndt-ed.org/EducationResources/CommunityCollege/Radiography/cc_rad_index.htm


http://www.euradnews.org/euradnews/newsletter12/pages/mootpoint/mootpoint_paynter.htm
 
L

lee01

#3
Thanks for your prompt reply,

I do actually understand all about NDT theorectically so to speak, but practicaly no I have no idea.

But all I'm really after is an example of the either the overal radiographic written process and/or an example of the dedicated part related written procedure or work instruction just to make sure I'm on the correct path.

Regards

Lee01
 

gard2372

Quite Involved in Discussions
#4
Lee,

You may be competent enough to write a procedure or work instruction regarding the parts being inspected to include defect criteria, but with no practical experience as you say you do not have, there are many technical and safety related precautions that need to be included in your processes you're are authoring that you may not be aware of. :confused:

However, as I recommended before, only a Certified Level II or III NDT Radiographer can "Practically" author a procedure covering kv source requirements, penetration readings, shot distances, part set-ups, metering, film interpretation etc... I could go on and on. I recommend you to go ahead and write your procedure and submit is to a Level III radiographer to review. I must tell you that until your facility has a certified inspected vault, RSO (Radiation Safety Officer) and source (isotope) license, your procedures will not be approved. :read:

Let me know your thoughts if you have further questions.
 
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