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RE: Transport Index
The neutron reading + gamma reading is included in the dose
rate at one meter for the TI measurement.
Beta is usually blocked by the packaging and will not be seen by the
instrument. If you look at a moisture density gauge shipping paperwork,
you will see the gamma and neutron readings for the TI by the
manufacturer.
Alan R. Marchand
Las Vegas, NV
radarm@accessnv.com
At 05:57 AM 2/4/99 -0600, you wrote:
>What about beta?
>
>> -----Original Message-----
>>
From: Busby,
Bruce [SMTP:bab1303@doh.wa.gov]
>>
Sent: Tuesday,
February 02, 1999 12:11 PM
>> To: Multiple recipients of list
>> Subject: RE:
Transport Index
>>
>> >The transport index (TI) is the dose rate in mrem/hour
measured at one
>> meter
>> >from the external surface of the package. Less than
one mrem is, of
>> course,
>> >reported, but not to more than two decimal places.
>>
>> Here is a question, does the TI include neutron dose rate
contribution?
>> During a 'recent' class on transportation, when asked, the
instructor
>> said no, just photons. He said the DOT (or NRC...) had made a
ruling on
>> that... though, he could not recall exactly where that was. The
regs say
>> mSv/hr divided by 100 (mrem/hr) (49 CFR 173.403).
>>
>> Anyone out there measure the neutron component, of say a
moisture density
>> gauge or other neutron sources?
>>
>>
>>
--------------------------------------------------------------
>> Bruce A. Busby -
Radiation Health Physicist
>> W- bab1303@doh.wa.gov
H-babusby@aol.com
>> Rad Prot. Div. - Dept. of Health - Washington State
>> 7171 Cleanwater Lane, Bldg. 5 Olympia, WA
98504
>>
>>
---------------------------------------------------------------
>>
>>
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