NUREG-1608

["Bauman, Rodney L. (84U) " <84u@BECHTELJACOBS.ORG>]

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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