ML20244C184

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Forwards Summary of 890601 Enforcement Conference Re Equipment Qualification Issues on Electrical Cables & Cable Splices at Plant
ML20244C184
Person / Time
Site: Waterford 
Issue date: 06/07/1989
From: Milhoan J
NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION IV)
To: Dewease J
LOUISIANA POWER & LIGHT CO.
References
NUDOCS 8906140155
Download: ML20244C184 (58)
v • d • e


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JUN T 1989 In Reply Refer To:

Docket: 50-382/89-05 Louisiana Power & Light Company ATTN:

J. G. Dewease, Senior Vice President Nuclear Operations 317 Baronne Street New Orleans, Louisiana 70160 Gentlemen:

This refers to the enforcement conference conducted in the NRC Region IV office on June 1,1989, between you and members of your staff, and NRC Region IV and Office of Nuclear Reactor Regulatien personnel. The enforcement conference was held to discuss the equipment qualification issues related to electrical cables and cable splices at the Waterford Steam Electric Station, Unit 3.

A summary of the discussions conducted during the conference is contained in the enclosure to this letter.

In accordance with Section 2.790 of the NRC's " Rules of Practice," Part 2 Title 10, Code of Federal Regulations, a copy of this letter will be placed in the NRC's Public Document Room.

Should you have any questions or comments on this matter, we would be pleased to discuss them with you.

Sincerely, Original Siped By J. L. Milhoan James L. Milhoan, Director Division of Reactcr Projects

Enclosure:

Meeting Summary w/ attachments cc:

Louisiana Power & Light Company ATTN:

R, P. Barkhurst, Vice President Nuclear Operations l

N P.O. Box B l

888 K111ona, Louisiana 70066 30' oo Louisiana Power & Light Company

$8 ATTN:

J. R. McGaha, Jr., Plant Manager I

P.O. Box B j

g,.g gg Killona, Louisiana 70066 l 00 2

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l Louisiana Power.& Light. Company 1 Louisiana Power & Light Company ATTN:. R. F. Burski, Manager, Nuclear Safety & Regulatory Affairs 317 Baronne Street

'P.O. Box 60340 New Orleans, Louisiana 70160 Louisiana Power & Light Company ATTN:

L. W. Laughlin, Site Licensing Support Supervisor 4

P.O. Box B K111ona, Louisiana 70066 Louisiana Power & Light Company ATTN:

G. M. Davis, Manager, Events l

Analysis Reporting & Response P.O. Box B Killona, Louisiana 70066 Middle South Services ATTN: Mr. R. T. Lally j

P.O. Box 61000 New Orleans, Louisiana 70161 Louisiana Radiation Control Program Director bec to DMB (IE45) bec distrib. by RIV:

RRI R. D. Martin, PA l

Section Chief (DRP/A)

DRP RPB-DRSS MIS System Project Engineer (DRP/A)

RSTS Operator RIV File DRS

'D. Wigginton, NRR Project Manager (MS:

13-D-18)

Lisa Shea, RM/ALF A. Howell P. Wagner.-

D. Chamberlain H. Walker, NRR T. Stetka l

4

i ENCLOSURE LOUISIANA POWER & LIGHT COMPANY June 1, 1989 MEETING

SUMMARY

An Enforcement Conference between representatives of LP&L and the NRC was conducted in the NRC Region IV office in Arlington, Texas, on June 1,1989. A list of attendees is included as Attachment 1..

The Enforcement Conference was held to discuss the equipment qualification issues related to the electrical cables and cable splices which may be subjected to submergence during and following a ' design basis accident. The licensee presented specific iniorrration, including new information that the NRC had not previously reviewed during their. presentation. The licensee stated that the submergence testing of the electrical cables and cable splices was performed as a separate test which utilized regular tapwater. These tests were performed using new samples in parallel to other qualification tests that involved sample aging, radiation exposure, and chemical spray exposure. With two exceptions, the licensee had no submergence tests that were conducted using aged samples.

The staff stated that additional review would be required to determine if the licensee's position on the qualification of potentially submerged cables and cable splices was acceptable. Additional discussions and, if advisable, an additional conference may be conducted to reach a final resolution for these issues.

Attachments:

1.

List of Participants i

2.

LP&L Presentation Viewgraphs l

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4-p ATTACHMENT 1 ENFORCEMENT CONFERENCE PARTICIPANTS NRC L. J. Callan, Director, Division of Reactor Projects (DRP).

E. T.' Baker, Acting Deputy Director DRP D. Chamberlain, Section Chief. Project Section A, DRP A. Howell, Project Engineer, DRP T. Staker, Resident. Inspector, DRP'

'J. L. Milhoan, Director, Division of Reactor Safety (DRS)

T. Stetka, Chief, Plant Systems Section, DRS

. P. Wagner, Reactor Inspecter, DRS G.' Sanborn, Enforcement Officer, Region IV R. Wise Enforcement Specialist, Region IV H. Walker, Senior Reactor Engineer, NRR D. Wigginton, Licensing Project Manager, NRR LP&L J. G. Dewease, Senior Vice-President Nuclear R. P. Barkhurst, Vice-President, Nuclear J. R. McGaha, Plant Manager R. G. Azzarello, N0EC Manager R. F. Burski, Nuclear Safety & Regulatory Affairs Manager M. L. Raines, Lead EQ Engineer F

K-__._.

ATTACHMENT 2 LOUISIAfM POWER & LIGHT WMPAf#

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l WATERFORD STEAM ELECTRIC STATION, UNIT NO. 3 D00(ET 50-382 UNRESOLVED IIBi 382/8831-01 1

SUBMERGENCE ISSUE i

d ENFORCB1ENT CONFERB4E l

JU!E.1989 l

.qs.;,.

i OtffLIE P DISCUSSION INTRODUCTION L

- SEQ'JENCE OF EVBUS IDENTIFICATIm 0F ISSUES l

LP8L POSITION ON DE ISSUES

- QUALIFICATION W CABLES / CABLE SPLICES

- PRESENTATION TJECTIVES

- tRC PREVIOUSLY REVIEWED AND ACCEPTED LP8L BASIS FOR QUALIFICATION OF CABLES AND SPLICES BASIS FOR QUALIFICATION OF CABLES IDENTIFICATION OF CABLES L

- DESCRIPTIm 0F TESTING

- EVALUATION ETt0D0 LOGY

- PERFORMANCE DATA /RESULTS

- CWCLUSIONS BASIS FOR QUALIFICATION OF SPLICES

- DEFINE TE ISSUES

- DESCRIPTION OF TESTING

- EVALUATION ETHODOLOGY

- PERFORMANCE DATA /RESULTS

- CONCLUSI0f6 SAFETY SIGNIFICANCE OTHER REASONS Eff0RCEKf6 IS NOT WARRAhTED

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l SEQUENE T EVENTS l

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ISSUE RESULTED FROM LP8L'S EFFORT TO FOLLOW UP ON SUBERGENE CONERNS REGARDING BARTON TRANSMITTER (VIOLATION N0. 8827-01) 12/15/88-LP8L INITIATED CI 260306:

EQ FILE FOR OKONITE CABLES AND SPLICES DID NOT SPECIFICALLY ADDRESS SUPERGENCE QUALIFICATION: LP&L IltEDIATE OPERABILITY i

l DETERMINATION 2/9/88 INSRCTION REPORT 88-31:

i IDENTIFIED ISSUE T BASIS FOR SUTERGENE s

QUALIFICATION AS AN UNRESOLVED ITEM (8831-01) 2/13-17/89 INSWCTION 89-05:

l REVIEWED QUALIFICATION DOCUMENTATION FOR SUBE RGED SPLICES l

)

2/17/89 LP8L INITIATED CI 261491 TO ADDRESS l

SUPERGENE QUALIFICATION l

2/23/89 LP8L PREPARED AND ItFORMALLY PROVIDED TO

'l NRC ENGINEERING EVALUATION SUPPORTING CONTINUED OPERATION 1

3/17/89 INSK CTION REPORT 8& O5:

FORMALLY IDENTIFIED UNRESOLVED ITEM f

8831-01 AS POTENilAL VIOLATION 1

l 4/5/89 LP&L SUPPLEMENTED DETAILED ENGINEERING I

EVALUATION TO ADDRESS IN MORE DETAIL THE CABLES SUIUECT TO SUBMERGENE; SUPPORTED OPERABILITY

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IDENTIFICATION (F ISSUES ISSUES RELAED TO QUALIFICATION OF CABLES

- DURATION OF SUBERGENCE TEST NOT DEMONSTRATED AS ADEQUATE TO COVER OPERABILITY TIES

- QUESTIONED SIMILARIT( OF CHEMICAL 00rF0SITION OF LONG TERM IltERSION TEST FLUID TO POST-LOCA SLMP INSRCTION REPORT 89-05 IDENTIFIED ISSUES REGARDING THE QUALIFICATION FILE FOR OKONITE T95/35 TARS SPLICES

- DOCLNENTATION DOES NOT SUPPORT SUBERGENCE QUALIFICATION I

- MATERIALS COMPATIBILITY NOT ANALYZED l

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.c LP&L POSITION (N THE ISSUES CABLES ALL SUBJECT CABLES AE QUALIFIED BASED ON THE TEST REPORTS THAT WERE IN EQ FILES LP&L HAS E-EVALUATED ISSUES RAISED AND CONCLUDED THAT SUBERGED CABLES AE QUALIFIED BASED ON LOCA TESTING, HI POT TESTING, AND LONG-TERM SUBERGENCE (WATER IltlERSION) TEST REPORTS OKONITE 195/35 SPLICE ASSEPELIES ARE QUALIFIED CABLE SPLIES BASED ON TE TEST REPORTS THAT ERE IN EQ FILE LP&L ANALYSIS SHOWS THAT SPLICES AE QUALIFIED BASED ON SAE TESTING DOCLPENTATION AS USED FOR CABLES (LONG lEfN SUBERGENCE TEST WAS NOT PREVIOUSLY DISCUSSED WITH NRC)

SPLIES ARE MATERIALLY COMPATIBLE WITH CABLES USED AT WATERFORD EQ DOClNENTATION DEFICIENCY ON_Y EQ FILES WILL BE UPDATED i

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PRESENTATION ORJECTIVES

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DEMONSTRATE TECHNICAL BASIS FOR QUALIFICATION OF CABLES AND CABLE SPLICES.

2. DEMONSTRATE THAT EIS POTENTIAL ENFORCEENT ITEM LACKS SAFETY SIGNIFICANT.
3. DEMONSTRATE THAT EWORCEENT ACTION IS NOT WARRANTED.

NRC PREVIOUSLY REVIEWED AND ACCEPTED LP&L BASIS FOR QUALIFICATION OF CABLES AND SPLICES EVOLVING ISSUES REGARDING ETHODOLOGY AND DOCUMENTATION FOR SUBMERGENE QUALIFICATION GENERIC ISSUE - MANY OTER PLAN'IS FAE SAME PROBLEM DUE TO LACK E SPECIFIC GUIDANE/ REQUIREMENTS ON THIS ISSUE MITIGATING CIRCUMSTANCES EXIST C_____________________-_________________________________

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PRIOR NRC REVIEW AND APPROVAL 4

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NRC PREVIOUSLY REVIEWED AND ACCEPTED LP&L BASIS FOR SUBTRGENCE QUALIFICATION NRC CONDUCTED EQ AUDIT, JAt0ARY 1983 i.

tRC REVIEWED BASIS FOR SUBERGENCE QUALIFICATION OF OKDNITE CABLE AND T95/35 SPLICE NRC QUESTIONS SPECIFICALLY ADDRESSED LP&L'S CURRENT l

POSITION THAT LOCA AND LONG TERM IIHERSION IS ACCEPTABLE

)

BASIS FOR QUALIFICATION l

LP8L ESPONSE DETAILING SUBERGENCE ETHODOLOGY WAS PROVIDED NRC VIA LETTER W5P83-0320, JANUARY 27,1983 SSER SUPPLEENT 5, SECTION 3.11.4.2, NRC DISCUSSES j

AUDIT AND ACCEPTS LP&L RESPONSE TO SUBKRGENCE ISSUES.

ALSO NRC REFERENCES JANUARY 27,1983 RESPONSE

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l IRC REVIEWED AND 00NO UDED IN SSER 8 LP&L COPPLIED WITH 10CFR50.49 i

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  • I EC QUESTIONS REGARDING SUBMERGED CABLE QUALIFICATION l

TliE STAFF OVESTIONED WHEmER TE DURATION OF TE SUBERGENE-lESTS B0UND TE. REQUIRED OPERATING TIES FOR THE ASSOCIATED-EQUIPENT, -

- TEST DURATIONS EXCEED REQUIRED OPERABILITY TIES FOR ALL CABLES THE NRC QUESTI0ED LP8L'S EQ ANALYSIS FOR CABLE SUPERGENCE IN REGARDS TO WHETHER IT DEMONSTRATED THAT M CEMICAL 00FPOSITION OF llE LONG-TERM SUBERGENCE TEST FLUID WAS ittiESENTATIVE OF FLUID EXPECTED TO COLLECT IN 111E SUPP SUBSE0 VENT TO A LOCA.

- LP&L EVALUATION SHOWS THAT CHEMISTRY E SPRAY (LOCA TEST) B0UNDS EXPEuts SUFP CONDITIONS, WITH A FEW EXCEPTIONS WHICH ERE DE1ERMIED TO HAVE MINIMAL EFECT i

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CABLES / TYPES SUBJECT TO SUBERGENCE e

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1 MANUFACTURER INSULATION JACKET' ANACONDA EPR-CSPE OR CPE' OKONITE EPR CSPE S#tlEL MOORE '

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EIH0DOLOGY TO IDENTIFY CABES REVIEWED APPLICABLE DRAWINGS,liiE CABLE AND CONDUIT LIST, AND OTER APPLICABLE SK CIFICATIONS TO IDENTIFY CABLES (AND T/ PES) POTENTIALLY SUBJECT TO SUBERGENE

- ELEVATION OF +20' MSL DOWN T0 (AND INCLUDING) CONDUITS EFBEDED IN CONTAINENT BASE REVIEWED EQ LIST TO IDENTIFY " FIELD RUN" CONDUITS CONTAINING CABLE POTENTIALLY SUBJECT TO SUBERGENE

- ELEVATION OF +10' MSL OR ELOW LP&L IS'CONFIDENTlliAT ALL CABLES SUBJECT TO SUBERGENE HAW EEN IDENTIFIED i

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CABLE FAILURE MODES / FUNCTIONAL ANALYSIS

. CRITICAL CABLE CHARACTERISTICS

  • - ELECTRICAL PROPERTIES INSULATION RESISTANCE (IR) AND/0R ~

- SPECIFIC INDUCTIVE CAPACITY (SIC) AND POWER FACTOR (PF)

ECHANICAL PROPERTIES

- STRUCTURAL INTEGRITY PARAETERS AFFECTING CRITICAL CABLE CHARACTERISTICS

  • TEMPERATURE
  • PRESSURE (PDISTURE INTRUSION)

CHEMICAL ENVIRONMENT

  • RADIATION i

y s..

m METHODOLOGY TO DEMONSEATE SUBERGENCE QUALIFICATION L

L DEPONSBATE THAT CABLES ARE QUALIFIED BY:

SHOWING THAT CRITICAL CHARACTERISTIC CHANGES ARE DRIVEN PRIMARILY BY L

TEMPERATURE AS OPPOSED TO OTHER PARAETERS l.

i RESPONSIVE EHAVIOR OF IR VALUES WITH ESPECT T0 TUPERATURE CHANGES PRE AND POST LOCA IR VALUES INDICATE RELATIVELY SMALL CHANGE SHOWING THAT CRITICAL CHARACTERISTIC CHANGES RESULTING FR01 SUBMERGENCE TESTS ARE RELATIVELY STABLE NelE:

RESULTS FROM SUBERGENCE TESTING FOLLOWING TE LOCA SEQUBCE ON TEFZEL AND ROCKBESTOS (XLPE) CABLE CONFIRMS THE ABOVE ETHODOLOGY i

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CABLE PE AND POST LOCA IR TEST VALUES i

ALL VALUES IN EG0HMS - 1000 FT. EXCEPT WHEE OTERWISE INDICATED WG SAMPLE #

PE LOCA POST LOCA OKONITETEFZEL UNAGED 1700 1700 AGED 1900 2050 ANACONDA 18.32 22 KMEG 29 K G 18.35 9.4 K G' 3.0itEG 20.16 2.617EG 3.5ItEG 20.26 10ItEG 8.6 IfEG ROCKBESTOS A1 1200 3900 (CHEM. XLPE)

  • A5 600 7000 B1 1700 7600
  • B4 500 5600 El 940 5600 ROCKBESTOS A2 2600 50,000 (RAD. XLR)

A3 5000 25,000 B1 3000 24,000

  • B4 2200 90,000 El 1900 30,000 SAMJEL MOORE 10 500 KEG 340 KEG 12 500itEG 190 ItEG 14 50017EG 310 KEG OKDNITE UNAGED 2300 3300 AGED 3500 2900 UNAGED SAWLE

L g

LOCA TEST SlFMARY -

1 LOCA TESTING DOES NOT DEGRADE EPR AND XLPE INSULATION WHERE CONTINUED OPERABILITY IS QUESTIONABLE POST LOCA 1'

l LOCA TESTING DEK)NSTRATES THAT NO SIGNIFICANT MOISTURE AND CEMICAL ABSORPTION OCCURRED LOCA TESTING DEMONSTRATES THAT THE CHEMICAL SPRAY DOES NOT ATTACK CABLE INSULATION OR JACKET MATERIAL k

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i' CABLE SUBERGENCE TEST VALUES l

.1 I

TEFZEL (510NTHS) AGED.

j SIC

%PF START 3.58 1,18.

STOP 3.55 1,51l HIGH 3,61 1,51 LOW 3,25 0.90 l

ANACONDA (26 WEEKS)

SIC

%PF START 2.43 0.59 STOP 2.71 0.43:

HIGH 2.71 0.62 LOWt 2.37 0.43 ROCKBESTOS (12 KNHS) CHEM, XiPE-SIC

%PF START 2,7 1.4

-STOP 4.1 1,9 HIGH 4.1 1.9 LOW.

2,7 -

0,7

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ROCKBESTOS (12 K M HS) RAD, XLPE SIC

%PF START 2.6 1.0 STOP 3.0 0.9 i

HIGH 3.0 1.1 LOW 2,6 0.8

l CABLE SUPERGB1CE TEST VALUES

~

CONT'D. -

. SAMJEL MOORE (30 WEEKS)

SIC:

%PF.

START 2.3 1.2 STOP 2.5 1.4 HIGH 2.5 1.6-LOW.

2.2 0.75 OKONITE (36 MONTHS)

SIC

%PF START 3.09 2.89 STOP 3.44 0.70 HIGH 3.44 2.89 LOW 3.09 0.70 SUPERGENCE TEST STMARY THE STABILITY OF THE SIC, PF AND IR VALUES INDICATE THAT THE CABLE INSULATION IS NOT ABSORBING MOISTURE TE CABLE INSULATION WILL NOT DEGRADE SIGNIFICANTLY BIOUGH TO QUESTICN OPERABILITY FOR 132 DAYS AFTER SUTERGENE FOLLOWING A LOCA

n g

. TEMPERATURE i-l PEAK QUALIFICATION TUPERATUE WATERFORD 3:- 30*F PEAK Sulf lHPERAlUE WATERFORD 3: 20*F

.LOCA TESTS ILLUSTRATE THAT IR DECREASES AS 1DFERATURE.

INCREASES - INVERSE RELATIONSHIP IR VALUES ESPONDED SIMILARLY TO TEPPERAlVE CHANGES UNDER VARVIE TEST CONDITIONS PE AND POST LOCA IR VALUES RELATIVELY SMALL CHANGE SUBPEEENCE TESTS (AT 0)NSTANT TEPPERATUE) INDICATE MINIMAL CHANGE IN IR, SIC AND PF 5

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RESSURE

.a TEST ESULTS SHOW THAT LOCA PESSURE DOES NOT INDtIE SIGINFICANT 10lSTUE ABSORPTION AS CONCLUDED BY IR ESPONSE TO TEMPERATURE a-CHANGES ADDITIONAL HYDRAULIC PESSURE RESULTING FROM SUBMERGENCE HAS MINIMAL EFECT MAXIMJM PRESSUE ESlLTING FROM SUBERGENCE WOULD BE LESS THAN 6 PSI-

- PRESSURE MARGIN FROM LOCA TESTING IS 22 PSIG i

i CHEMICAL ENVIA0 TENT I

LOCA SPRAY CHEMI3LS BOUND CONTAMINANTS IN THE SUMP WITH TE FOLLOWING EXCEFFIONS:

i OILS - MINIMAL OIL EXitut.D IN THAT TE AMOUNT OF OIL IN CONTA!!ffNT IS LIMITED PRIMARILY TO TE OIL CONTAINED IN THE EACTOR COOLANT PLPPS WilCH IS NOT EXPOSED TO CONTAllffNT SPRAY j

i MISC. CONTAMINANTS - CALCIUM, SILICON, DUST, DIRT METAL CORROSION PRODUCTS, I

MINIMAL EFFECT ON STRUCTURAL INTEGRITY OF JACKETS MA!0FACTURERS'

)

DATA INDICATE N0 SIGNIFICANT AINERSE l

EFFECT ON CABLE JACKET OR INSULATION j

FATERIAL j

i

)

4 RADIATION LOCA TEST RADIATION EXPOSURE BOUNDS ACCIDENT 7

CONDITIONS AT WATERFORD 3 (3.3 x 10 RADS)

LOCA TEST RADIATIQ1 EXPOSURE B0V!0S SlfiP RADIATION DOITIONS

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.,m (DNCLUSIONS CABLES ARE CAPABLE OF WITHSTANDING A LOCA WITH NO SIGNIFICANT DECREASE IN IR AND WILL NOT DEGRADE SIGNIFICANTLY U50N SUBSEQUE!E SUBERGENE, LP8L MAINTAINS THAT TE SUBJECT CABLES ARE QUALIFIED FOR LOCA AND SUBE RGENCEi AND TE EQ FILE CONTAINED SUFFICIENT Iff0RMATION TO QUALIFY TE SUBJECT CABLES FOR THEIR IfflENDED USE.

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1 ISSUES REGARDING

' SlNERGED SPLICE QUAI.lFICATION TE STAFF CONCLUDED THAT LP&L'S QUALIFICATION D00fENTATION FOR OKONITE T95/35 TAPE SPLICE ASSENLIES DID NOT ADEQUATELY ESTABLISH OVALIFICATION FOR SUBERGENCE FOR SPLICES LOCATED ELOW FLOOD LEVELS, TE STAFF DETERMIED THAT LP8L HAD NOT ANALYZED TE MTERIAL COMPATIBILITY OF TE TESTED. SPLICES TO OTER MNLFACTURERS CABLE JACKET / INSULATION MATERIALS..

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Le TESTING C& DUCTED Fm OKONITE TAPE SPLICES h

FULL LOCA TEST - NUREG 0588 I

- TEMPERATURE

- PRESSURE

- C MICAL SPRAY

- 100% HlNIDITY

- AGING (RADIATION & THERMAL)

HIGH-POT EST - IEEE 383

- SUBERGENCE IN TAP WAER

.HIGH VOLTAGE WIESTAND TEST SHORT DURATION LONG TERM SUBERGENCE TEST - IPCEA

- SUBERGENCE IN TfP WATER IR, AND/0R SIC AND PF CHECKS HIGi WLTAGE WIiiiSTAND TEST

- LOY3 Dur4110R

~

F OKDNITE SPLICE LOCA L

AND SIR ERGENCE TESTS L

Report No.

, 1_

2 3

4 5

Baseline IR 4000 2000 1500-11,000 30,000 659 E G0HMS-KEG 0HMS IfEGOWS IfEG0mS EG0mS-1000 ft.

1000 ft.

Post Aging 4000 2000 180-1900 15,000 Not Applicable IR 17EG0HMS KEG 0mS 17EG0mS MEG 0HMS-1000 ft.

FinalIR 0.016-1 260-320 110-180 4,800 2440 KG0HS-ItEGOMS KEG 0mS ItEGOWS EGOWS-1000 ft.

1000 ft.

Type Splice Taped V Taped V Tapeless V Inline Inline Splice T-95 T-95 T-95 T-95 T-95 Insulation Splice No. 35 No. 35 No. 35 No. 35 None

' Jacket Cenent Yes & No No No Yes Yes DBA Test LOCA LOCA LOCA LOCA Subnergsice Duration 4.5 days 8 days 45 hours5.208333e-4 days <br />0.0125 hours <br />7.440476e-5 weeks <br />1.71225e-5 months <br /> 130 days 11 nmths Peak Teno.

360*F 270*F 425'F 345'F 194*F Ps k Pressure 50 psig 21 psig 55 psig 112 psig 1 PSIG (2.5 ft. H 0) 2 Chemicals No No Yes Yes No Conductors /

XLE XLPE EPR ard-EPR EPR Insulation Silicone Rtbber 4 Aging 600 hrs.

100 brs, 112 hrs.

21 days a No L

& 275*F a 113"C a 110*C 150*C Equivalent 40 yrs a 40 yrs a 15 yrs a 40yrsa N/A Life antient antient 120 F 120 F h-

+12.9'F

+12.9'F

+12,9'F rise rise rise mininun Radiatio'1 107 m ADS 11.7 MADS 22 MADS 200 MRADS No l

EPORT NO.1: PEI-TR 842900 REPORT NO. 2: PEl-TR-84-/04-1 REPORT NO. 3: WYLE REPORT NO. 17947-01 REPORT NO. 4: OKDNITE REPORT NO. NORN-3 RER)RT NO. 5: OKDNITE LONG TERM WATER liters 10N TEST - 1/10/83

1 l'.

OKONITE 195/35 AND CONDUCTOR INSULATION l

MATERIAL OWATABILITY-

  • f0LDS TO FORM A ECHANICAL SEALS NOT CHEMICALLY DEPENDENT
  • TESED WITH XLPE AND EPR INSULATED CONDUCTORS EFZEL IS CHEMICALLY INERT (EXCEPT WITH NITRIC / SULFURIC ACIDS AND ORGANIC BASES AT HIGH CONCENTRATIONS NEAR TEIR BOILING POINTS)

CONSTRUCTED SAWLES OF 195/35 SPLICES WITH EPR AND TEFZEL INSULATED CONDUCTORS

9 s

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c SPLICE FAILURE P0 DES /

FUNCTIONAL ANALYSIS A CABLE SPLIE IS AN INSlLATING SYSIEM SIMILAR TO CABLE INSULATION. ACCORDINGLY, TE FAILURE EDES/ FUNCTIONAL ANALYSIS FOR CABLE IS APPLICABLE TO SPLICES.

A' SPLICE WILL Fall IN A MANER SIMILAR TO A CABLE IN THAT IR WILL-DECREASE BELOW A TOLERABLE LEVEL.

UNTAPED V-TYPE SPLICES HAVE BEEN DEMONSTRATED TO BE SIMILAR TO TAPED V-TYPE SPLICES.

- NDEL SPLICES SWW AEQUATE COVERAGE E CONDUCTORS AND FILLING -

AND SEALIl0 0F ALL: VOIDS WITH T95 INSULATING MATERIAL SAE MATERIAL CONSTRUCTION

- ACCEPTABLE TEST ESlLTS INLINE SPLICES HAVE EEN DEMONSTRATED TO BE SIMILAR TO V-TYPE SPLICES

- SAT MATERIAL CONSTRUCTION L

i

- AECUATE COVERAGE OF 00NDUCTORS

- ACCEPTABLE TEST RESlLTS 4

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y..,3 SPLICE FAILURE FDES/ FUNCTIONAL ANALYSIS-U CRITICAL SPLICE-CHARACTERISTICS.

ETCTRICAL PROPERTIES INSULATION RESISTANCE (IR).

- SRCIFIC INDUCTIVE CAPACITY (SIC)

POWER FACTOR (PF)

  • ECHANICAL PROPERTIES STRUCTURAL INTEGRITY PARATTERS AFFECTING CRITICAL SPLICE CHARACTERISTICS TEMPERATURE
  • PRESSURE (FDISTURE INTRUSION)

CHEMICAL DNIROENT RADIATION

F p

ETHODOLOGY TO DEMONSTRATE SUTERGENCE QUALIFICATION 1

l DEM)NSTRATE THAT SPLICES AE QUALIFIED BY:

SHOWING THAT CRITICAL CHARACTERISTIC CHANGES ARE DRIVEN PRIMARILY BY-TEIPERATUE AS OPPOSED TO OTER PARAETERS l

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PRE AND POST LOCA IR (OR SIC & PF) VALUES RELATIVELY SMALL CHAEE RESPONSIVE BEHAVIOR OF IR VALUES WITH ESRCT TO 19PERATURE CHANGES I

SHOWING THAT CRITICAL OiARACTERISTIC CHANGES RESULTING FROM l

l SUTERGENCE TESTS ARE RELATIVELY STABLE i

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t LOCA TEST RESULTS ON T95/35 SPLICE AND 01011t CABLE UtG0H% - 1000 F1.)

PRE LOCA POST LOCA UNAGED 14,000 5,300 AGED 15,000 4,800 THE SPLICE SAWLES WERE NOT SIGNIFICANTLY DEGRADED OVER THE 130 DAY LOCA TEST AND MAINTAIED SUFFICIENT IR FOR CORTINUED OPERABILITY SUBMERGENCE TEST RESULTS ON T95 SPLICE MATERIAL AND OKONITE CABLE (11 MONTHS)

SIC PF IR(MEG 0 mS-1000 FT)

START 2.78 1.35 639 STOP 3.03 1.14 2440 HIGH 3.03 1.35 2440 LOW 2.78 0.78 608 THE SPLICE MATERIAL DEf0NSTRATED NO DEGRADATION OVER THE 11-f0 NTH SLN ERGENCE TEST (IR ACTUALLY IW ROVED) i TESTING SUWARY THE CABLE / SPLICE SAWLES DEMONSTRATED THE ABILITY TO EIMIN FitCTIONAL AFTER 130 DAW 0F LOCA AND SEPARATE SUBERGENCE TEST RESULTS INDICATES NO FURTHER DEGRADATION AFTER SUBMERGENCE.

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s' 2-T9PERATURE PEAK QUALIFICATION TEMPERATURE WATERFORD 3:' 340*F-PEAK SU W U PERATURE WATERFORD 3: 240*F LOCA ESTS ILLUSTRATE THAT IR DECREASES AS T&PERATURE INCREASES - IfNERSE RELATIONSHIP

  • - IR VALUES RESPONDED SIMILARLY TO T&PERATURE CHANGES LNDER VARYING EST CONDITIONS PRE AND POST LOCA IR VALUES RELATIVELY SMALL CHANGE SUBERGENCE TESTS (AT CONSTANT UPERATURE) INDICAE IWROVEI) IR (CHANGES IN SIC AND PF MINIMAL)

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PRESSURE 1

TEST ESULTS SHDW THAT LOCA PESSURE DOES NOT INDLCE SIGINFICANT MDISTURE ABSORPTI(N AS CONCLUIED BY IR ESPONSE:TO TEMPERATURE CHANGES

  • - ADDITIONAL HYDRAULIC PESSUE ESLLTING FROM SUBMERGENCE HAS MINIMAL EFE CT

-- MAXIltM PRESSUE ESULTING FROM SLNERGENCE WOULD E LESS THAN 5 PSI

- PRESSUE MARGIN FROM LOCA TESTING IS 68 PSIG D

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--~___----__--_-_-.-...-.----._._...--_-_-_-a-

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CHEMICAL ENVIRONENT i

LOCA SPRAY CHEMICALS B0UND CONTAMINANTS IN llE SlNP WITli TE FOLLOWING EXCEPT10NSi OILS - MINIMAL OIL EXPECTED IN THAT TE AM)UNT OF OIL IN CONTAllfENT IS LIMITED PRIMARILY TO TliE OIL C(NTAIED'IN TE REACIOR COOLANT PLPPS WHICH IS NOT EXPOSED T0.00NTAlffENT SPRAY

' ' MISC. CONTAMINANTS - CALCIUM, SILICON, DUST, DIRT METAL CORROSION PRODUCTS, MINIMAL EFFECT ON~ STRUCTURAL INTEGRITY OF INSULATING AND JACKETING TAPE: MAf0FACTURERS' DATA INDICAlE NO SIGNIFICANT ADVERSE EFFECT ON CABLE JACKET OR INSULATION MATERIAL

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RADIATI@

.z LOCA TEST RADIATION EXPOSUE BOLNDS ACCIDENT' CONDITION AT 7

WATERFORD 3 (3.3 X 10 RADS):

LOCA TEST RADIATION EXPOSUE BOUNDS SlN RADIATION CONDITIONS l.!

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CONCLUSIONS SPLIES ARE CAPABLE OF WITHSTANDING A LOCA WITH NO SIGNIFICANT DECREASE IN IR VALUES AND WILL NOT DEGRADE APPRECIABLY UPON SUBSEQUENT SUTERGENE.

  • LP8L t%INTAINS THAT THE SUBJECT SPLICES ARE QUALIFIED FOR LOCA AND SUBERGENE.
  • THE OKONITE SPLICE EQ FILE WAS DEFICIENT IN THAT IT DID NOT SPECIFICALLY ADDRESS QUALIFICATION FOR SUTERGENE, HOWEVER THE APPROPRIATE TESTING DOCLNENTATION TO QUALIFY THE SPLICES WAS IN TE EQ FILE.

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SAFETY SIGNIFICANCE (CABLES AND SPLIES)

ALL CABLES IN POTENTIALLY SUTERGED APPLICATIONS AT WATERFORD AE QUALIFIED.

- TESTS REPORTS IN EQ FILES

  • ALL OKONITE TAE CABLE SPLICES IN POTENTIALLY SUPERGED APPLICATIONS WERE QUALIFIABLE. DOCUMENTATION DEFICIENCY LACED SAFETY SIGNIFICANT.
  • LP8L'S ENGINEERING EVALUATION E THE 16 INSTRLNENTS WITH SUBERGED OKDNITE SPLIES SHOWED NO SAFETY SIGNIFICANT IN THAT:

FAILURE E THE SPLIES WOULD NOT PREVENT TE OPERATOR FROM ACHIEVING AND MAINTAINING SAFE SHUTDOW CONDITIONS

- ADDITIONALLY, 8 INSTRlNENTS WERE DETERMINED NOT ECESSARY l

FOR LONG TEBM POST-ACCIDEKf CONDITIONS;,

  • LP8L 1%INTAINS l}lAT THERE IS NO SAFETY SIGNIFICANT.

i l

OTHER EASONS EEORCEENT IS NOT WARRANED LP&L BELIEVES THAT THIS ISSUE DOES NOT N ET THE " CLEARLY SHOULD HAVE KNOWN TEST" 0F GENERIC LETER 88-07 LP&L CLEARLY DEf0NSTRATED BEST EFFORTS TO COELEE ALL E0 REQUIREMENTS BEFORE THE NOVEEER 30,1985 DEADLINE LP&L IS VERY ACTIVE IN CONTINUING TO MONITOR INDUSTRY EQ ISSUES; f9BER OF f0 CLEAR LTTILITY GROUP ON EQ WHICH EETS REGULARLY WITH tRC STAFF TO DISCUSS AND RESOLVE ISSUES

- NO PREVIOUS SECIFIC GUIDELIES OR EQUIREENTS EXISTED IN TE AREA T SUBERGENE QUALIFICATION

- NRC ASKED SRCIFIC QUESTIONS IN 1983 REGARDING WRRENRY DISCUSSED QUALIFICATION ETHOD TO WHIG LP&L PROVIDED SPECIFIC RESPONSES (W3P83-0320, dated 1-27-83). TE STAFF ACCEPTED THE METHODOLOGY IN REFERENCING LP&L'S ESPONSE WITH0lTT QUESTIONS (SSER SUPPLEENT 5)

LP8L BELIEVES THAT ISSUES RELATED TO ETHODOLOGY AND DOClNENTATION FOR SUBERGENE QUALIFICATION ARE EW, EVOLVING ISSUES BETWEEN l

INDUSTRY AND NRC 4

l

- LP8L'S APPRDAG AND DOCl19ffATION FOR SUBMERGENCE QUALIFICATION I

IS NOT UNIQUE IN INDUSTRY

- SEABROOK RECORD REFLECTS THE EVOLVING NATURE T TE ISSUE; IN PROPOSED FINDINGS, STAFF APPEARED TO CONCUR WITH QUALIFICATION BASED ON LOCA TEST GENERIC ISSLE WHIG SHOULD E RESOLVED BY ADDRESSING THE TEGNICAL ISSLES GENERICALLY

b i'

,,,t OTHER EASONS EWORCEENT NOT WARRARIED l

ENFORC99fT IS NOT WARRANTED lEDER TE ENFORCEENT POLICY OF 10 CFR PART 2, APPENDIX C

- DUE TO EVOLVING NAlljRE OF ISSUE, AND WHAT HAS PREVIOUSLY BEEN ACCEPTED IN INDUSTRY, NOT A MATTER REASONABLY WITHIN LP8L'S 00NTROL (SEE SECTI(N V.A)

AT A MINIHJM, THE MATTER SHOULD NOT E TE SUBJECT T ESCALATED ENFORCEENT ECAUSE THE PRINCIPLES T BFORCEENT DISCETION APPLY (SEE SECTION V.G)

- LICENSEE IDENTIFIED

- RESOLVED /CORECTED

- NOT EASONABLY PEVENTABLE

- NOT WILLFUU. OR INDICATIVE OF BREAKDOWN e

ENERIC INDUSTRY EXPERIB4CE

't LP.a.L CONTACTED OTER UTILITIES TO ASCERTAIN TE STATUS OF SJBERGENCE QUALIFICATION

[

NLEROUS UTILITIES HAVE EQUIPENT WHICH WOULD BE SUBERGED IN A LOCA CON'ERSATIONS WITH A-E CONFIRi THAT TE WATERFORD CONFIGURATION OF CABLES BELOW SUBERGENCE LEVEL IS NOT lt1C0f0N FOR A PWR DESIGN CABLE FW4UFACTURERS REPORT THAT NO ADDITIONAL TEST DATA IS AVAILABLE TE QUALIFICATION FOR SUBERGENCE FOR SEVERAL PLANTS IS BASED ON DOCUMENTATION OF A COMBINATION OF LOCA, WATER IltERSION, AND ANALYSIS ACCEPTED BY THE NRC SUBERGENCE IS CURRENTLY AN ONGOING ISSUE WITH NRC IN OTHER REGIONS ENDORSEENT FROM INDUSTRY EXERTS FOR WATERFORD 3 QUALIFICATION ETHODOLOGY FOR SUBERGENCE 4

MITIGATING FACTORS L

l IF A CIVIL-PENALTY IS (DNTEMPLATED FOR THIS ISSUE, l

MITIGATION SHOULD BE ALLOWED BASED ON THE FOLLOWING:

- LP&L IDENTIFIED TIE ISSIE T POTENTIALLY SUffERGED CABLE SPLICES RELATED TO SAFETY INJECTION SUMP LEVEL TRANSMITTER AND PROPPTLY INITIATED CI REPORT 260506

- LP8L PROPPlLY EVALUATED OPERABILITY AND INITIATED ENGINEERING EVALUATION TO C0ffREHENSIVELY ADDRESS TE ISSLE: KEFT NRC STAFF FULLY INFORMED

- UPON FURTHER UNDERSTANDING OF NRC CONCERNS, LP&L PROFFTLY INITIATED ITS N0P-019 PROCESS (CI REPORT 261491)

- LP8L HAS GOOD PAST PERF0lNANCE IN EQ - - NO ESCALATED ENFORCEENT BASED ON FIRST ROLND INSPECTION

- AS CORRECTIVE ACTION, LP&L WILL SUPPLEtOff THE EQ FILE FOR OKONITE CABLE SPLICES TO ADDRESS QUALIFICATION FOR SUBMERGENCE

z--

  • I*

._f, L

SLPMARY f

STARJS:

CABLES AND SPLICES ARE FILLY QUALIFIED BASIS FOR QUALIFICATION OF OKONITE CABLE SPLICES; WILL BE ADDED TO OKONITE FILE LP&L POSITION:

- N0 VIOLATION, EXCEPT FOR DOCLPEKiATION DEFICIENCY IN FILE FOR CABLE SPLICES QUALIFICATION DOClfENTATION EXISTED BASED ON LOCA, HI POT,

- AND LONG TERM SUBMERGENCE TEST REPORTS I

IN ANY EVENT, NRC PREVIOUSLY REVIEWED AND ACCEPTED LP&L BASIS FOR QUALIFICATION NOT " CLEARLY SHOULD HAVE KNOWN" NO SAFETY SIGNIFICANCE N0 ENFORCEENT ACTION WAPRANTED

_--____________--_ -_

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