ML19262C131
| ML19262C131 | |
| Person / Time | |
|---|---|
| Site: | 07000824 |
| Issue date: | 12/20/1979 |
| From: | Olsen A BABCOCK & WILCOX CO. |
| To: | Crow W NRC OFFICE OF NUCLEAR MATERIAL SAFETY & SAFEGUARDS (NMSS) |
| References | |
| 15019, NUDOCS 8002070001 | |
| Download: ML19262C131 (3) | |
Text
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I Babcock &Wilcox amm.u c ocep-nios*a P.O. Bcx 12EO. Lynchburg, Va. 24505 "7;.35 553 Telechene: '204) 384-5111
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Dece ber 20, 1979
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Mr. W. T. Crow, Acting Chief, Uranium Fuel Licensing Branch Division of Fuel Cycle & Material Safety Office of Nuclear Materials Safety and Safeguards U. S. Nuclear Regulatory Commission Washington, D. C.
20555
Reference:
BAW-381. " Demonstration and Conditions for License SS-778",
December, 1978.
License: SNM-773, docket 70-824
Dear Mr. Crow:
I am attaching replacement page A-24, dated Decemoer, 1979, revision 4 for insertion in the referenced document.
The changes indicated by a vertical line in the right hand margin have been discussed with and agreed to by Mr. An-Liang Soong of your staff, as a satisfactory resolution to a concern that he had regarding a co.___itment for the LRC to prompt respond to contamination in excess of specified limits.
As previously stated in actions taken to promptly resolve outstanding issues in this license renewal action, I will furnish printed pages to replace the xerox copies currently used to enable me to respond rapidly to requests from your staff, in the near future.
Yours very truly, Babr.ock & Wilcox Company Lynchburg Research Center 1925 323 g coa-g,
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Arne F. Olsen License AdM n'strator AFO:ccf Attachment 8'003070
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The Babcock & Wilcox Company / Estab!ished 1567
Table A-2.
LRC Detection Equipment Instruments Sensitivity Range Window Thickness 2
Low-range GM (4)
- Beta, gamma Background, mR/h 30 mg/cm 2
Intermediate-range Beta, gamma mR/h, R/h Beta -- 1 mg/cm 2
ion chambers (4)
Camma - 1 g/cm 2
High-range ion (2)
Gamma Up to 500 R/h
>100 mg/cm chambers 2
Proportional (3)
Alpha, beta Background, 1 mg/cm counter 500,000 counts /
min Proportional (1)
Neutron, fast Background, N/A counter and thermal 5000 mR/h 2
Counting room Alpha, beta Background,
- 1 mg/cm proportional (1) 100,000 counts /
counter min Counting room gamma Gamma Background up N/A spectrometry, sodium (1) iodide and Ge(Li) 2 Air particulate Alpha, beta Background up
<1 mg/cm monitors (4)
Stack monitoring
- 1) Alpha & beta Background to 106 <1 mg/cm2 equipment (1) particulate counts / min
- 2) Caseous beta, Background to 10 30 mg/cm2 5
gamma counts / min Personal monitors **
Gamma, beta, 30 mR to 500 R Variable neutron (special cases only)
Pocket dosimeters *** Camma 0 to 200 mR N/A Direct-reading pocket Gamma 0 to 200 mR N/A dosimeters (12)
O to 500 mR N/A Plutodiumwound Gamma 0.004 pCi Thin monitor (1)
Portabic air samples Air particulate N/A N/A collection only (6)
)925 324
- Number of instruments available for use.
- One for each radiation worker.
- Two for each radiation worker. May be substituted with a TLD if it is read at least monthly License No.
SNM-778 Docket No.70-824 Date November 1979 Page A-23 Amendment No.
Revision No.___3 15019 Babcock & Wilcox
If the entire particle is radioactive, the activity of the particles varies with the cube of diameter of the particle. However, usually a radio-active particle attaches itself to a nearby non-radioactive dust particle (approximately 1 micron in diameter) which is much larger physically than the radioactive particle. As shown above, if one of these particles gets by the absolute filter, its chances of being detected are only one in 25,000.
In the case of our plutonium handling area, each glove box has an absolute filter at each box exhaust. These filters are so effective that after years of glove box operations there is no detectable activity in the main off-gas line before coming to the final absolute filters. This is a very strong indication that the plutonium ; rticles are not getting by the absolute filters.
I A. 9. 2. 6 Area Surveys - Health physics shall administer an area survey program that includes smear, air, and environmental sampling.
A.9.2.6.1 Smear Surveys - Health Physics shall perform smear surveys at the below indicated frequencies in the areas listed. Health Physics shall determine and direct the action to be taken tc. Orotect personnel and reduce the levels of contamination below those specified.
Decontamination to reduce levels of contamination shall commence within 24 hours2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br /> of discovery.
If, however, contamination is discovered just prior to the beginning of a holiday or weekend the contamination shall be marked and labeled, and decontamination shall commence during the first regular work-day af ter discovery.
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License No.
SNM-778 Docket No.70-824 Date December 1979 Page A-24 Amendment No.
Revision No.
4 Babcock & Wilcox