[ RadSafe ] Limited Quantity

[Dan W McCarn]

Bill:

Please refer to the NRC / DOT / IATA definition of radioactive material:
49 CFR 173.403, IATA 10.4.2.1 and IAEA Publication 1225 - TS-R-1 (2005)

DEFINITION:
49CFR173.403: “Radioactive material means any material containing
radionuclides where BOTH the activity concentration AND the total activity
in the consignment EXCEED the values specified in the table in §173.436
or values derived according to the instructions in §173.433.”

Dan ii

Attached is a declaration that I used on my return from France.

--
Dan W McCarn, Geologist
108 Sherwood Blvd
Los Alamos, NM 87544-3425
+1-505-672-2014 (Home – New Mexico)
+1-505-670-8123 (Mobile - New Mexico)
HotGreenChile at gmail.com (Private email) HotGreenChile at gmail dot com

-----Original Message-----
From: radsafe-bounces at health.phys.iit.edu
[mailto:radsafe-bounces at health.phys.iit.edu] On Behalf Of The Wilsons
Sent: Monday, January 17, 2011 11:27
To: The International Radiation Protection (Health Physics) Mailing List
Subject: Re: [ RadSafe ] Limited Quantity

Bill,
I believe the Postal Service may have something to say about this.

Bob Wilson

On 1/4/2011 11:03 AM, William Lipton wrote:
> You are correct, there is no activity limit for an excepted package, if
> these are the only radionuclides present.  Note that these radionuclides
> have very low specific activity.  Also note that the person shipping an
> excepted package is NOT exempt from the DOT training requirements.
>
> Before going to the trouble of preparing an excepted package, you should
> also note that the "exempt"  concentration and activity limits of 49 CFR
> 173.436 for these radionuclides are high:  I-129 = 2.7 uCi, Mn-53 = 27
mCi,
> Ni-59 = 2.7 mCi.  You may be able to ship your package without regard to
its
> radioactivity.  Please note that if you are shipping a package by an air
> express service, such as Fedex, the IATA regulations apply.
>
> On a somewhat tangential note, I am surprised that the exempt activity
limit
> for Co-60 is 2.7 uCi.  Assuming that all of this activity is in a point
> source, the 1 cm, unshielded dose rate would be approximately 36 mrem/hr.
> Yet, such a source could be shipped as nonradioactive, e.g., you could
mail
> it without any radioactive markings.  This seems to be a potential hazard
to
> an untrained person if the package fails.
>
> Bill Lipton
> It's not about dose, it's about trust.
> Curies forever.
>
>
>
>
> On Tue, Jan 4, 2011 at 10:44 AM, Tung,
Enoch<Enoch.Tung at perkinelmer.com>wrote:
>
>> Hi All,
>>
>>
>>
>> Quick questions about LQ.
>>
>>
>>
>> As per 10 CFR 49, limited quantities for liquid (normal form) is 10^-4 *
>> A2.
>>
>>
>>
>> Now in table 173.435 there are some entries that show A2 (and A1) values
>> to be "unlimited".
>>
>> ie.  I-129, Mn-53, Ni-59, etc.
>>
>>
>>
>> Does this mean the limited quantity for those isotopes are also
>> unlimited?
>>
>> In effect, there is no activity limit to ship those isotopes as Excepted
>> Package, as long as surface dose rate and TI criteria are met?
>>
>>
>>
>> Thanks,
>>
>> Enoch
>>
>>
>>
>>
>>
>>
>>
>> Enoch Tung | Health Physicist
>>
>> PerkinElmer | For the Better
>>
>>
>> enoch.tung at perkinelmer.com
>>
>> Phone:  +1 617.350.9068   |   Fax:  +1 617.350.9567   |   Mobile:   +1
>> 617.438.7012
>>
>> 549 Albany St., Boston, MA 02118 USA
>>
>> www.perkinelmer.com
>>
>> Please consider the environment before printing this e-mail.
>>
>> This e-mail message and any attachments are confidential and proprietary
>> to PerkinElmer, Inc.  If you are not the intended recipient of this
>> message, please inform the sender by replying to this email or sending a
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>> Thank you.
>>
>>
>>
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