I would discuss with your TLD vendor to determine if it is best to use a TLD just for this job that can be read for the identified energy spectrum as opposed to your normal plant calibration spectrum. Also applying specific fade factors for the job may be appropriate.
Sent from my iPhone On Jul 17, 2013, at 9:02 AM, "Holmes, Stephen J" <[email protected]> wrote: > We have a proposal for a vendor to come on site and perform radiography using > x-ray equipment. This equipment will emit x-rays of considerably lower energy > (150 kVp max) than our typical gamma source term, and we are concerned about > whether our instrumentation/dosimetry (calibrated to Cs-137) will adequately > measure the dose from this device. We have previously performed pulsed x-ray > radiography at Ginna, and had proven that our instrumentation performed > satisfactorily, but this was at a significantly higher x-ray energy (300-400 > kVp max). We plan on using the Fluke-Biomedical 451B ion chamber, Landauer BA > series OSLs, and SRDs (pocket ion chambers) paired with the DMC2000s EDs to > monitor the work. > > Do you have experience with x-ray radiography at your facility? > > If so, did you do any testing, or anything else (such as a white paper), to > justify your ability to properly monitor the exposure from the x-ray source? > > If so, would you be willing to share the results or can you provide contact > information? > > Thanks, > > -Steve > > Stephen J Holmes, CHP, PE > Sr. Plant Health Physicist, CENG-RE Ginna NPP > [email protected] > 585-771-3577 > > This e-mail and any attachments are confidential, may contain legal, > professional or other privileged information, and are intended solely for the > addressee. If you are not the intended recipient, do not use the information > in this e-mail in any way, delete this e-mail and notify the sender. -EXCIP
