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Re: Electronic Dosimeters accepted as Official Dose of Record
INPO guidance specifies that nuclear power plants using electronic dosimeters for the
dose of record should participate in the NVLAP accreditation process.
The opinions expressed are strictly mine.
It's not about dose, it's about trust.
Curies forever.
Bill Lipton
liptonw@dteenergy.com
Sandy Perle wrote:
> I would really appreciate hearing from NRC or state regulators regarding this,
> preferably:
> Many years ago there was a push to allow an electronic dosimeter to be used for
> dose of record, in lieu of either a film badge, TLD badge or other accepted passive
> dosimeter. There was also an NRC statement that implied that the electronic
> dosimeter could be used (with the caveat that it also met all of the requirements that
> the current dosimeter met). The last part was lost on many. The NRC later clarified
> what was in the document, that was also distributed in response to a question from
> Siemens, UK, who wanted their EPD to be accepted as dose of record.
>
> I am not aware of any regulatory position by the NRC or any state that allows the
> electronic dosimeter to be used as a dose of record device. 10CFR20 contains the
> following requirements for NVLAP accreditation (electronic dosimeters exempt since
> they have been deemed not processed) even though they all possess
> microprocessors where the facility can change the various parameters:
>
> Part 20.1501:
> (c) All personnel dosimeters (except for direct and indirect reading pocket ionization
> chambers and those dosimeters used to measure the dose to the extremities) that
> require processing to determine the radiation dose and that are used by licensees to
> comply with §20.1201, with other applicable provisions of this chapter, or with
> conditions specified in a license must be processed and evaluated by a dosimetry
> processor --
> (1) Holding current personnel dosimetry accreditation from the National Voluntary
> Laboratory Accreditation Program (NVLAP) of the National Institute of Standards and
> Technology; and
> (2) Approved in this accreditation process for the type of radiation or radiations
> included in the NVLAP program that most closely approximates the type of radiation
> or radiations for which the individual wearing the dosimeter is monitored.
> So, my question is, are you aware of any regulatory body that allows the use of an
> electronic dosimeter as a dose of record, where no TLD, film or other passive
> dosimeter need be worn? If so, under what regulatory authority has this been
> permitted, i.e., document that can be obtained that states that NRC licensees, or
> state regulated programs, approve of this.
> Thanks for any information.
>
> ***************************************************************
> Sandy Perle
> Director, Technical
> ICN Worldwide Dosimetry Service
> ICN Plaza, 3300 Hyland Avenue
> Costa Mesa, CA 92626
>
> Tel: (714) 545-0100 / (800) 548-5100 Extension 2306
> Fax: (714) 668-3149
>
> E-Mail: sperle@icnpharm.com
> E-Mail: sandyfl@earthlink.net
>
> Personal Website: http://sandy-travels.com/
> ICN Worldwide Dosimetry Website: http://www.dosimetry.com/
>
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