RE: Definition of Fissile Classes

["King, Steve P [Non-Employee/1018]" <steve.p.king@pharmacia.com>]

The International Atomic Energy Agency-related changes simplify the rules

for shipment of fissile material(radioactive material that could sustain a

chain reaction) by combining the three existing fissile classes into one. 



Fissile Material (49 CFR 173.403). Any of the radionuclides Pu-238, Pu-239,

Pu-241, U-233, and U-235.

Fissile material is placed in three classifications according to controls

necessary

to ensure nuclear criticality safety.

*

Fissile Class I - no controls necessary.

*

Fissile Class II - package contents and number of packages limited.

*

Fissile Class III - special arrangements between shipper and carrier are

necessary. 



Packaging requirements for fissile class II and III materials are

Relatively complex, with many provisions and exemptions. The most

significant is the exemption for quantities of less than 15 grams. These

exemptions are for the U.S. DOT regulations and do not exempt compliance

with facility Acceptance Criteria.

Mixed Lading. The term used to describe shipments of radioactive material

which are, can, or may be shipped on the same vehicle or temporarily stored

at a terminal with other commodities. Obviously, more restrictions and rules

must and are applied to packages of radioactive material which are shipped

Mixed Lading.



Steve King

Duratek, Inc.









-----Original Message-----

From: owner-radsafe@list.Vanderbilt.Edu

[mailto:owner-radsafe@list.Vanderbilt.Edu]On Behalf Of Goff, Tom

Sent: Thursday, January 22, 2004 5:17 PM

To: ''RadSafe Send Message'

Subject: Definition of Fissile Classes









Does anyone know where the definition of Fissile Class is for

transportation??  That is fissile class 1, 2 and 3





Tom Goff

WIPP ALARA Coordinator

WIPP Integrated Waste Operations

(505) 234-8861

(fax)  234-8963

e-mail  Tom.Goff@WIPP.ws

page (505) 234-8850  (pager 479)

P.O. Box 2078

Carlsbad, NM 88221

Radiological Engineering: Anticipating Problems.....providing solutions!!!





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