ML17275A730

Responds to NRC 801120 & 0819 Ltrs Re Sacrificial Shield Wall.Forwards Info Re Fire Hazard of Shielding Matl Used in Repair of Wall Gaps.Affidavit Encl

ML17275A730
Person / Time
Site:	Columbia
Issue date:	12/01/1980
From:	Bouchey G WASHINGTON PUBLIC POWER SUPPLY SYSTEM
To:	Tedesco R Office of Nuclear Reactor Regulation
Shared Package
ML17275A731	List: ML17275A730 ML17275A732 ML17275A733
References
GO2-80-272, NUDOCS 8012090295
Download: ML17275A730 (14)

Text

REGULATORY <FORMATION DISTRIBUTION'Y+'>i (RIDS)

ACCESS IOQ NBR: 8012090295 DOC", DATE: 80/12/01 NOTARIZED: YES DOCIl'ET FACIL:50-397 HPPSS Nuc<lear Pr oJ act< Unit 2r Washington Public Powe 05000397 AUTH D NA%K AUTHOR AFFiILIIAT ION BOUCHKYrG,D. Hashington Public Power Supply System RKCIPQNAHE RKCIPiIKVT'FFILIIATION TKDESCOgRQLQ Assi sta'nt; Director for LIicensing

SUBJECT:

Responds to VRC'011?0 L 0819 ltrs re saceificial shield wall Forwards infot re fire hazard of'hielding matl used in repair of wall gaos.A'f fidavit. encl, DISTRIBUTION CODE: 8001S COPIES RECEIVED: LITR )< ENCLI g SIZE! 9d+~

TITLE: PSAR/FSAR AHDTS and Related C'orrespondence NOTES: PM: 2 copies of all mater i el ~ 05000397 REC IPIIENT COP'IKS RECIPIENT< I GOPIKSt ID CODE/NA 9E, LITTR ENCL 4D CODE/NARES', L TR E CL ACiTION: A/D 1 0 YdUNGBLOODEBL I.IICENSNG'USHBROOKR lQ 1 0) LYNCH'B, )

04 ll INTERNAL(: ACCID KVALI BR26 1 ~l AUX 9 07 CHER ENG. BR 08 1 >1 CONT SYS J R BG i CORE PKRFB BR 10 1 EPPES T BY BR I'P 1 '1 EHERG PREP'2 1 0 EQUIP QUA I BRIQ 3 06 GKOSCZENCES 14 HUM F CT EIVGi BRi>

1 "

1 HYD/GEO BR 15 2 2 ILC SYS BP 16 ILK 3 3 LlICl GUI O B LIIC QUALI BR 1 1 IATLI ENG 8 17

'UIECH E'VG BR 18 1 1 MPA 1 "0

NRC POR 02 1 1 OELD 1 0 OP LIIC BR 1 1 PO'rlKR SYS BR 19 1 1 PROC/TST RKV'0 1 QA BR 21 S BR2? 1 1 RKAC SYS BR 23 1 1 G FILETS 01 1 1 SIT ANALt BR 20 1 NG BR 25 1 SYS INTERACI BR 1 1 EXTERNAL: ACRS 27 16 16 LPDR 03 1 1 N SIC., 05 1 DEC ~0 19 58 TOTAL NU 'UI 8 KR 0 F I C 0 P 'I K 8 REQUIRED! L T T R Pf E NC L

4"

'1 P1 Ilf g If I'

lf

~ 'I 1

fl r

r U

~ I y~1 e

Washington Public Power Supply System A JOINT OPERATING AGENCY P. O. Box 988 3000 Gco, WASHINoroN WAY RICHI.*No, WA1HINoroN 99352 PHONa (509) 375 5000 602-80-272 December 1, 1980 Docket No. 50-397 U.S. Nuclear Regulatory Commission Office of Nuclear Reactor Regulation Washington, D. C. 20555 Attention: Mr. R. L. Tedesco Assistant Director for Licensing Division of Licensing Gentlemen:

Subject:

WPPSS Nuclear Project No. 2 Flammability Resistance of Sacrificial Shield Wall (SSH)

Shield Material

Reference:

1) Letter, RL Tedesco (NRC) to RL Ferguson (WPPSS),

"Staff Evaluation of the Proposed Corrective Weld at the 541 Foot Construction Joint of the Sacrificial Shield Wall", dated November 20, 1980

2) Letter, G02-80-182, DL Renberger (WPPSS) to BJ Youngblood (NRC), "Engineering Evaluation of the Sacrificial Shield Wall", dated August 19, 1980, transmitting Supplement No. 1 to the subject report

/CD Attached please find three (3) copies of information responding to your

.'-R conc'em in Reference 1 about the fire hazard of the shielding material used in the repair of gaps in the WNP-2 Sacrificial Shield Hall (SSW).

According to discussions with the HNP-2 NRC Project Manager, Mr. Lynch, submittal of this information removes the remaining 'hold'RR has placed on the actual performing of the girth weld repair. The other open item relative to the girth weld (submittal of a response to NRC guestion 130.048) is understood not to be a construction hold item and will be resolved in the normal course of the NRC Structural Engineering Branch (SEB) review.

also note that you have stated there is insufficient information in We our August 19th submittal to you (Reference 2) which gave, among other P QQ/

5

)f(

80la090 >~S

0 I

i N

N

P' Washington Public Power Supply System Mr. R. L. Tedesco G02-80-272 Page 2 December 1, 1980 items, the rationale for leaving known defects in the SSW. You also stated the submittal lacked specificity and sufficient justification.

Please note that the August 19 submittal was only intended to be a summary statement prepared in response to an NRC request for such a document. The detailed engineering justification for the acceptabi-lility of the as-built structure was embodied in the original report submitted for your review on August l.

Notwithstanding the above item, we urgently request you document your detailed concerns to us as quickly as possible relative to this matter, since resolution of these concerns may be an NRC prerequisite to further construction activities on the SSW other than the girth weld. We would appreciate, prompt disposition of this matter to avoid potential construc-tion delays.

Content of the Reference 1 letter, not pertinent to technical dispo-sition of the SSW, will be the subject of separate discussion/corres-pondence with NRC management.

Very truly yours, G. D. BOUCHEY Director, Nuclear Safety GDB:OKE:cph attachments (5) cc: MD Lynch - NRC-DOL w/att (telecopy cover letter)

RH Engelken - NRC w/att (telecopy cover letter)

BJ Youngblood - NRC (telecopy cover letter )

A. Toth - NRC Resident Inspector w/att JJ Verderber - Burns 8 Roe, New York w/att ND Lewis -EFSEC, Olympia wo/att JR Lewis - BPA wo/att WNP-2 Files

H STATE OF WASHINGTON) Flammability Resistance of

) ss Sacrificial Shield Wall (SSW)

COUNTY OF BENTON ) Shield Material G. D. BOUCHEY, Being first duly sworn, deposes and says: That he is the Director, Nuclear Safety, for the WASHINGTON PUBLIC POWER SUPPLY SYSTEM, the applicant herein; that he is authorized to submit the foregoing on behalf of said applicant; that he has read the foregoing and knows the contents thereof; and believes the same to be true to the best of his knowledge.

DATED >ue~8c< >g, 1980 G. D. BOUCHEY On this day personally appeared before me G. D. BOUCHEY to me known to be the individual who executed the foregoing instrument and acknowledged that he signed the same as his free act and deed for the uses and purposes therein mentioned.

GIVEN under my hand and seal this ~Sday of ~~, 1980 Notary Public in n for t e State of Washington Residing at

. V II H I I

//

V I /rJ V

H

/

Attachment Information Responding to NRC Concern Relative to Flammability Resistance of the Shielding Material to be used in the Repair of Gaps in the WNP-2 Sacrificial Shield Wall Contents Item Summary

2. Material Properties of BISCO NS-I Shielding Compound

3. Fire Test on BISCO SF-20 Silicone Foam and Radiation Seals in Masonry Wall Design WP 374

4. Investigation of Surface Burning Characteristics of A Solid Silicone Sheet Materia, NS-1

5. Summary of WNP-2 Mock-up Test Regarding Heat Input to The Shield Material Letter, RL Tedesco (NRC) to RL Ferguson (WPPSS), "Staff Evaluation of the Proposed Corrective Weld at the 541 Foot Construction Joint of the Sacrificial Shield Wall," dated November 20, 1980

f Item 1

~Summar The essential properties of the shielding material are listed in item 2 of this attachment. The material is Brand Industrial Services, Inc. (BISCO) NS-I (High Density) shield material employing powdered lead as a shield enhancing additive. Item 3 of this attachment is a copy of the test report by Factory Hutual of several BISCO products for compli-ance with ASTH E 119-73 (NFPA 251). BISCO Haterial SF-150L, which the report also covered, is essentially the same material as BISCO NS-1. In both cases the primary polymer, additive component (powdered lead), and purity level of the additive component are identical. Item 4 of this attachment is a copy of Southwest Research Institute Report documenting tests on BISCO Haterial NS-1 in accordance with E 84-79a (NFPA 255).

Though the material test specimen in this instance did not contain the powder ed lead additive, BISCO has stated that such non-combustible additives will not detract from the fire resistance of the material. In fact, BISCO said such materials usually enhance the resistance. Item 5 is a summary of the mock-up test done at WNP-2 to determine if there would be any deleterious effects on the shield material due to the heat input from welding. No such effects were, observed for the spectrum of gaps to be encountered. It is evident from the above test reports and the mock-up test that, the flammability resistance of the material of concern is demonstrated.

Item 2 Material Properites of BISCO NS-I Shielding Compond

March 26, 1980 Nr. Fred Heingard Burns & Roe Corporation washington Nuclear Powe Project No. 2 P. 0. Box 200 Richland, WA 99352

Subject:

. Special Hate ial fo Shim Gap and Sacrif'cial Shield Wall Shieldin use.

Dea- i>ir. heingard:

The mater'al prope tv descr'ption and elemental composition for our hign density NS-I co@pound is attached for your review.

I am sending a 'similar enclosure along with p ior cor- ~

respondence and test data to Noodberry, as you reauested.

Ne look forward to providing this solution for your project, please contact us for any further information.

Sincerely, B> .ND INDUSTRIAL SERVICES, INC.

James N. Sherwood Director of Marketing JNS/vo Enclosure cc: A. Eaton C. Brown J. Anderson WBGBR-215-975B C brand industrial services, inc.

1420 renaissance drive, pork ridge, illinois 60068, (312) 298-1200, telex 282-482 t subs'tdtarv el 'brand 1noilins~e 1~i

4 F"ed Neingard Burns & Roe 3/26/80 MATERIAL PROPERTIZS PRODUCT TYPE; NS"I (High Density)

POLYMERS DESCRIPTION: Dimethyl Polysiloxane (Synthetic Rubber)

DENSITY, COMPOSITE: 2.4 gm/cc(3.50~/cu.ft.) nominal COMPOSITION:

- Ht.% Pol er H .4% 1. 4 gm/cc C - Nt.% 17,5$

0 - Nt.~o 37.0% (87"-.,/cu.ft.)

Si - Ht,S 41, 1%

FILLER TYPE: Powdered Lead FILL 8, VOLUME: 11% nominal CO~ZOSITZ FW>Z SPRZ~~:

ASTM Z-84 o Less than 25 ASTM E-162 o Less than 20. Flame Spread I ASTM Z-119 o Tested for 5 hou s durat'on (FM 24963)

TZNSILE STRENGTH: o 300 psi init'al ELONGATION: o 100% initial

'DUROMETER: o over 60 Shore A initial RADIATION RES1STAVi CE: e over 1 x 10 11 Rads DATA FROM: Zi che & Bowman "Effects of Radiation on Ma erials

& Components", pages 90 to 100 University of 'Michigan Test Complete HALOGEN CONTENT: Complies with requirements of Reg, Guide 1.36 SUPPLIED AS: A 2 liquid and powder system desicned to be field blended and proportioned.

Installs as a liquid and cu"es together at room temperature within 10 hours1.157407e-4 days <br />0.00278 hours <br />1.653439e-5 weeks <br />3.805e-6 months <br />, of mixing at 25'C (77'F). See BISCO Mix-ing and installation Procedure.

WS GB A -21'-g y ga