Re: Survey Instrument calibration frequency

[Tarantino@vapower.com]

ANSI N323A-1997 does not have this guidance.  However it does indicate that
specific calibration requirements of low-range portable survey instruments
will be published in ANSI N323B, for air monitoring instruments the
calibration requirements will be established in ANSI N323C, and for
installed instruments that measure dose or dose equivalent, or dose rate or
dose equivalent rate as well as AC powered instruments used to detect the
presence of radioactive material contamination, the calibration
requirements will be published in ANSI N323D.





"Jim F. Herrold" <Herrold@uwyo.edu> on 02/04/99 01:27:15 PM

Please respond to radsafe@romulus.ehs.uiuc.edu

To:   Multiple recipients of list <radsafe@romulus.ehs.uiuc.edu>
cc:    (bcc: Tarantino/NUC/VANCPOWER)
Subject:  Survey Instrument calibration frequency




Howdy.

Reading through Draft NUREG 1556 vol.11 I came across this statement under
section 8.10.2, RADIATION MONITORING INSTRUMENTS:

"Some instruments may only need to be checked periodically for operability
and response to radiation rather than receive full calibration.  For
example, Geiger-Mueller (G-M) type survey instruments used to identify
contamination in laboratories may only need to be checked for ability to
detect low level contamination."

If this is true, it would have a HUGE impact on our calibration program. Is
anybody else doing this? Does anybody know where the NRC got this guidance?
Was it from ANSI N323A-1997? I don't have it yet, but am planning to obtain
one as soon as possible. We have been following the old ANSI N323-1978, and
don't remember any statements like the one above.

We are in the process of renewing our license. Because NUREG 1556-11 is
still in draft form, the NRC says I can't use it yet. However, if I can
find
another suitable reference for this statement, I could use it.

Thanks.

Jim Herrold, Radiation Safety Officer
herrold@uwyo.edu

University of Wyoming
Environmental Health & Safety
303 Merica Hall
Laramie, WY 82071-3413

(307) 766-3277

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