ML20138J288
| ML20138J288 | |
| Person / Time | |
|---|---|
| Site: | South Texas  |
| Issue date: | 08/07/1985 |
| From: | Powell M HOUSTON LIGHTING & POWER CO. |
| To: | Jacobi L HOUSTON LIGHTING & POWER CO. |
| References | |
| OL-I-CCANP-131, NUDOCS 8510290304 | |
| Download: ML20138J288 (4) | |
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Houston Lighting & Power Company h6C G-of r CE MEMOR ANDUM May 19, 1981
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L. R. Jacobl
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-pbC" saject incident Peview Comittee (IRC) Meetin Minutes Concernin l'
Verification of Shielding Analysis Cal ulations (Item #97 ;
May ll, 1981 SOUTH TEXA5 PROJECT ELECTRIC GENERATING ST ATION The HL&P IRC was convened to evaluate a concern with B&R's position that
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shielding calculations are not safety related and therefore need not be i
design verified consistent with the requirements for verification of safety related calculations.
During a recent technical assessment of B&R a concern was identifled that B&R performs shielding calculations without design wrifying them; this is not consistent with the requirements for verification of safety related calcu-lations. B&R's position is that shielding calculations are not safety related and need not be design verified to the stringent requirements for safety related calculations. In addition, several shielding analyses have been subcentracted by B&R to other vendors and there is no apparent indica-tion that these analyses have been verified.
Af ter reviewing the results of the technical assessment, tFe HL&P 1RC Chairman notified the NPC-RegionlV.cn tte evening of May 8,1991, that cer-tain shielding calculations affecting safety related considerations city not i
have been design verified consistent with the requirements for verification of safety related calculations. This item is potentially reportable pur-suantto10CfR50.55(e).
b The HL&P IRC was consened on May 11,1981 to evaluate what was reported on I'
May 8,1981 and identify the infomation that would be necessary to prepare the 30-day report as required by 10CfR50.55(e).
HL&P Health Physics p'ersonnel identified to the IRC that shielding calcula-tions are usually not identified as being safety related, lhis is standard engineering practice throughout the nuclear Industry, in addition, an NiSI Standard, #151 hlb.2, substantiates that shielding calculations are not identified as being safety related.
The IRC Chatrran questioOd as to whether or not the calcualtion that Identi-fies the radiation dose from an accident based condition (LOCA), th3t the control roon operator would esperience, should be designated as safety re-lated. HL&P lleelth Physics personnel responded that in the design of the control room, the primary protection that is provided to the operator for protection against an accident based condition, is the filtration system which provides protection from the alrt,crne radiation dose as a result of a LOCA. Typically, shielding is not the primary contributor.
As a result of the May 11,1981 1RC m.eeting, the following action items 8
have been assigned:
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- q (1) HL&P Health Physics to review kl51 N18.2 to detemlre/tdent'ify' T
I the requirerents for shleiding calculations.
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(2) HL&P Health Physics to confirm whether or not HLLP is corraf tt d to ANSI N18.2 e
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HL&P Health Physics /BER Shielding personnel to review shie criteria for (1) the control roon dose. (2) offstte dose and (3) access to areas with equipm from outside the control room. ent that require operator action (4) HL8P Health Physics /BLR $hielding to determine all applicabl standards, regulatory guides, etc.
e (5) Mi&P Health Phystes to contact other A/E's conceming shl idi design and whether or not shielding caleviatiens ale consice e
ng to te safety related.
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.y MEP/ par ATTENDEES:
M. E. Powell J. G. White H. C. Overstreet J. L. Blau R. R. Hernandez J. B. Anderson J. D. McAplin P.5. Jordan (B8R) cc:
J. H. Goldberg D. G. Barker C. G. Robertson T
R. A. Frarar
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J. W. Briskin i
J. R. Sumpter L. K. English G. L. Parkey T. J. Jordan I
H. J. Sweeney R. L. Waldrop K. R. Cook (BlR)
J. L. Wanks (BlR)
D. W. Janecke (B&R R. Ratninas (B&R) )
H. McGee (BAR)
J. D*011ver (BLR)
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IRC MEETING MINUTE 5 ITEM 102 DISTRIOUTiONPAGE K. M. Broom 03 33g J. R. Childers K. R. Cook 03 902G C. L. Crane 03-6608 l
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J. V. D' Oliver 03 602A R. R. Gunter o3 434 i,
J. L. Hawks
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R. R. Hernander
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P. 5. Jordan 03-804(HL&P)
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R. H. K11 mist 03-676A
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G. G. Magnuson 23-1270
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H. G. Overstreet 03 609 R. W. Fescriey 03.g03 (ntgp)
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E. A. Saltare111 03 903H A. W. Sriith 03-660 R. J. Vurpillat SIP Site H. C. Bell 23-125 MIS (DC) 03 655 EDCC (2)23-114 5.
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