ML19220B072
| ML19220B072 | |
| Person / Time | |
|---|---|
| Site: | Crane  |
| Issue date: | 03/06/1978 |
| From: | Eisenhut D, Vollmer R Office of Nuclear Reactor Regulation |
| To: | Higgenbotham L NRC OFFICE OF INSPECTION & ENFORCEMENT (IE) |
| Shared Package | |
| ML14358A173 | List: |
| References | |
| NUDOCS 7904250271 | |
| Download: ML19220B072 (2) | |
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ENCLOSURE 1
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ts PEMC?ANGL"' FOR:
L. Higginbotham, Actine Director Div. of Fuel Facility 2 ra terials Sa fety Inspection, IE FRCM:
D. G. Eisenhut, Assistant Director for Coerational Technoiccy, CCR R. H. Vollmer, Assistant Director for Si te' analysis, CSE SUSJECT:
NEUTRON EXPOSL'U.E AT CC."ERC!AL PC"Eo REACTIO S We have received the attached meno frc.o Glenn 'd. Zi-mer in cur Office of Standards Cevelcpment and have discussed the issue wi th him.
It is our understanding that the data on which he bases his ccccarns cane frem a Sattelle Paci fic '!ce:heest L:bara:Ory e ealuation o f neutron al bedo dosimeters given o a heal:n pnysicist of a ?'.P rho used. en, in :cre unkncwn canner, on reactor personnel.
The : ecole fr n PML who 9.are responsible for evaluating anc rescr:inc the data were Leo Faust and G. W. Enders.
We discussed the data with Faust and Enders, and it ras strassed by these individual s that the data cia r. t ' sly a lack of c:r:-0! by ar" licenscs wi th resp =ct to neutron exposure.
The de a v!s ga'rered as an aside to a research pecgraa on car a s%yshine dose easure sotn and for cost of the dosi eters listed in the attached eao, the exposure was cut-side the control of Faust and Enders.
In addi tion, i t w? s stressed by the PNL investigators tha t the energy s:ectral distributico of t"e neutrons to.,hich the dosimeters ' care ax;ased wa s nn: known.
This -aans tha t the interpretation of the resul ts f-c, the desi,eters is cues-tio nabl e.
The albedo cosimeter nay everestimate en esures by as much as a factor of 20 to 50 da9endine en tne calibration sources.
The purpose of P.'!L sacritting the data -as to :rovide a justi ficaticn for a research pecgran preposed by P"L to MRC Resaarch to reasure snectrai distribut,ica of neutrons and T e ralated calcul ataa rautron dese equivalen cocpared to TLD neutron dose equivalent reasurs *ents.
He have no reason to believe that a cr0bl:n exists at LPo's with respect to personnel neutron tosi etry 3s lora as tPair ?eliatica Prot 9c tion Pr:gra s ara acpropriataly i'clerontad.
c c '. 7 - 9 r" Cuide 3.1 * "P erso-nel l'autron 2 si"a der' ;.in; ac:' cal. '::::s of reasuring neut on da:es crd.fose c:ui e t1:nt expos :res.
This regula:0 y cui12 s;ecifically rcc-rancs eerins us'
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, film for anergies less -han abcut 0. 7."IV.
The cuide Or;" ides :ltera2.2 acc2p tail s ret'cds for ce:ar-inian neutron 00;e to norson 31.
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'r' ether ce not reacter 1!censees are er'or'airo 1: recnri *:- n utre, ea suremn ts.
Cy so d ine, t.e can sati sfy curs.2ives t.ha t r-cmr: d cr:cti:2s ar = Miro c:rM:4 cut.
This review va s ;;crformi by T. ibrphy, R.u/OSE. and S. Bl ock, EG/202-Carrell G. Ei senhut, Assistant Director
'ichard H. Vol lmer,,is si stant Ci ec.e.c r for Coerations.1 Technel:cy for si t.7 Anal,*si s Division of C;eratice P.eacters
. visics cf Site Safety and Er.vircnrental,'7alysi s
Enclosure:
As stated cc:
E. Case R. Boyd R. Pa tt On H. CentOS Y. Stello D. Elsenhut P..
Volleer R. Al e.xar. der P. ftiregue G. Zit".:ct t..
Barrett T. R;rphy "g
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