Re: Controlled Area Posting

["Le, Quang" <quangle@SLAC.Stanford.EDU>]

Hi Leon,

If I remember correctly, if you control access to an area for radiological
reason, that area is a "restricted area" NOT a "controlled area". According
to my previous experience, these are my answers to your questions: 

1) Again, in this scenario, I would define this area a "restricted area"
because you are controlling access for radiological reasons. (I could be
wrong here, I don't have 10CFR available to double check. Anyone differs?)

2) See #1). We don't control access to "controlled areas" because of dose

3) We used area TLDs AND periodic dose rate surveys to make sure there is no
potential for the "public" to get 2 mrem in one hour. Again, this is at the
"restricted area" boundary.

Sincerely,

Quang Le
SLAC/OHP
<quangle@slac.stanford.edu>

<<We have several questions at Big Rock Point for NRC licensees relating to
a
controlled area as defined in 10CFR20.1003 (i.e., an area outside of a
restricted area but inside the site boundary, access to which can be
limited by the licensee for any reason).

If you have formally established a controlled area and you exceed 100
mrem/year TEDE (if you follow 10CFR20.1302(b)(1)) or 50 mrem/year DDE (if
you follow 10CFR20.1302(b)(2)) outside your restricted area boundary but
not beyond your controlled area boundary, please answer the following:

1)  Have you posted the boundaries of the controlled area and, if so, how
have you worded your posting?

2)  How do you demonstrate that you restrict access to the controlled area
by members of the public such that they cannot exceed the
10CFR20.1302(b)(1) or (2) dose limits?

3)  How do you perform the surveys required by 10CFR20.1302(a)?  Restricted
area boundary TLDs, area TLDs placed within the controlled area, periodic
microR-meter dose rate surveys of the controlled area, etc. or a
combination of methods?

Thank you in advance for your assistance.

Leon E. Brown
Senior Consultant
Big Rock Point Restoration Project
lebrown@cmsenergy.com
(231) 547-8419>>
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