Re: NUREG-1608

[William V Lipton <liptonw@DTEENERGY.COM>]

I'm not aware of any electronic copies.  This can be ordered, at a reasonable

cost, from the Public Documents Room.  Send inquiry to:  pdr@nrc.gov

Bill





"Bauman, Rodney L. (84U)" wrote:



> Anyone know where I can obtain an electronic copy of NUREG-1608.  I checked

> the NRC's website - it skips from 1603 to 1609.

>

> Thanks, Rodney

>

> Rodney Bauman, CHP, RRPT

> Bechtel Jacobs Company, LLC

> Project Health Physicist

> ETTP and Y-12 Waste Operations

> Y-12 Plant Bldg. 9624, MS 8222

> Voice: 865.241.5344

> Pager: 865.417.0561

> Fax: 865.576.3946

> 84u@bechteljacobs.org

>

> > -----Original Message-----

> > From: William V Lipton [SMTP:liptonw@DTEENERGY.COM]

> > Sent: Thursday, September 20, 2001 7:31 AM

> > To:   Joe Heckman

> > Cc:   radsafe@list.vanderbilt.edu

> > Subject:      Re: Contaminated Scaffold Knuckles - Turkey Point

> >

> > This must be used with caution.

> >

> > The bad news:

> >

> > 1.  Read the regulations carefully:  Here are the key definitions from 49

> > CFR

> > 173.403:

> >

> > "Radioactive material" means any material having a SPECIFIC ACTIVIY

> > [emphasis

> > mine] greater than  70 Bq per gram (0.002 microcurie per gram)(see

> > definition of

> > "specific activity").

> >

> > "Specific activity" of a radionuclide means the activity of the

> > radionuclide per

> > unit mass of THAT RADIONUCLIDE [emphasis mine].  The specific activty of a

> > material in which the radionuclide is essentially uniformly distributed is

> > the

> > activity per unit mass of the material.

> >

> > The standard, "essentially uniformly distributed" is discussed in

> > NUREG-1608/RADREG-003, "Categorizing and Transporting Low Specific

> > Activity

> > Materials and Surface Contaminated Objects."  It is a very rigorous

> > standard.

> > (A less rigorous term, "distributed throughout," is used in some

> > definitions.)

> > Distributed throughout gives you some leeway, but essentially evenly

> > distributed

> > does not.  Although there is no quantitative definition of these terms,

> > NUREG-1608 guidance states that for the material to be considered

> > essentially

> > evenly distributed, the specific activity among 0.1 m3 volumes should not

> > vary

> > by more than a factor of 3.  Thus, materials with surface contamination

> > cannot

> > be considered having their activity essentially evenly distributed.

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