ML20207K979

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Rev 1 to Sequoyah Element Nonrestart Justification Summary, Electrical Safety,Pvc Liquidtight Flex Conduit
ML20207K979
Person / Time
Site: Sequoyah  Tennessee Valley Authority icon.png
Issue date: 12/19/1986
From: Mcnutt G, Russell J
TENNESSEE VALLEY AUTHORITY
To:
Shared Package
ML20207K654 List:
References
235.8(B), 235.8(B)-R01, 235.8(B)-R1, NUDOCS 8701090577
Download: ML20207K979 (4)
v • d • e


Text

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TVA EMPLOYEE CONCERNS REPORT NUMBER: 235.8(B)

SPECIAL PROGRAN

  • REPORT TYPE: SEQUOYAH ELEMENT REVISION NUMBER: 1 z

(C s

NON-RESTART JUSTIFICATION

SUMMARY

TITLE: ELECTRICAL SAFETY 1

~

/_ PVC Liquidtight Flex Conduit j PAGE 1 0F 2 1

i i REASON FOR REVISION:

1 Revised to include additional details in justification, i.

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1 PREPARATION PREPA BY

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SIGNATURE aWu DATE

! CONCURRENCES i

0 CEG-H: N /2-8-PC DATE SRP:q R M M"$ 3C SIGNATURE

  • DATE SIGNATURE

.h APPROVED BY:

,, // /b'/8'h N/A l Aw ECSP M4 NAGER DATE MANAGER OF NUCLEAR POWER CONCURRENCE (FINAL REPORT ONLY)

DATE

  • SRP Secretary's signature denotes SRP concurrences are in files.

10/30/86 - 03650 l

8701090577 061224 PDR ADOCK 05000327 P POR

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Q SEQUOYAH NUCLEAR PLANT ENGINEERING RELATED EMPLOYEE CONCERNS SPECIAL PROGRAM NON-RESTART JUSTIFICATION

SUMMARY

SU8 CATEGORY / ELEMENT 235.8(8)

This concern was raised on W8N and is considered generic to SQN since PVC j jacketed conduits are also used in containment and valve room areas at

SQN..

The element is not an SQN Restart item since the PVC jacketed conduit

  • will not adversely affect the ability of the systems or components to perform their safety functions during a design basis event (DBE). The PVC jacketed conduits enhance the ability of the included cables to withstand BETA radiation on a LOCA environment. The conduit assembly with the PVC jacket was environmentally qualified in a test conducted by Central Laboratories, C186-86-1155. This test demonstrated the PVC jacket on the conduit would remain intact for two hours at 3600F. This is well above the primary loop loss of coolant accident (LOCA) and main steam line break (MSLB) temp of 3270F for 30 minutes and 3040F for 83 minutes, b

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1 ATTACHMENT: List of Issues for fleArica_]. ELEMENT NO. 235.8(B)

Date: 99LO9/86 03650'- Page 2 L

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,4 5@ af sfM vt1 [LE( T cateta 235.8 W BY: 1. Don-Doncow Date: 09/09/86

  • PvC Liquietegnt Flea Conduit ELDf Ni

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!$50E 5 ADowf 55ED SI BL E Cf kEAAL APPROACH /TTHOCOLOGY FOR ELE 4NT REPORT CCmCEau n:.:eista!5) 15-85-97 2 3 1 Plastte fles condu6ts installed in 235.8 ID 1 Determine whether this condition entsts at Plastic type fles conduit contalnacnt and valve rooms are Sequoyah, installed between instruments inadequate for use as a result of the If condition entsts, determine whether it has and for all floor mounted panels heat generated to these areas. 2.

t,een addressed, (Units 1 and 2) canact alth- .

stead neat generated la contain.",WJ[te action to correct the prcDies has 235.8 ID

3. If the concern has been addressed, deteemine sent ane walve rooms. Ci stated ?;g bete taken although engineering has . nether the resolutica and corrective. actlpa, a friend (kno n) said that all  ;

.w been advised of the prontes.

if applicable, are acceptable. ..'

seca tastellations has to te -

caanged at Seguoyen. CI could  ;

not prowlde spectfIc panelf .* DOCUTNTS NECDCD F04 REVIEW j

i consatt I.D. s's. Engineer- '.

FSAR for environmental date (knoun) has been contacted, as e 1 has Knomellie Englasertag, but , jg /,f*g . 2. Fles condult type and characteristics 4

! Construction specs.

no actica has been taken. **.- 3.

l Construction Department concern. 4. Any reports addressing this corwittlon Sett galts. 1945 5. Contract under whtCh the material was supplied

6. Justification for use as is or corrective actions, if entsting .

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-J 1 REFERENCE - ECPS123J-ECPSI21C TENNESSEE VALLEY AUTHORITY PAGE -

136 m FREQUENCY - REGUEST ~' ' - OFFICE OF NUCLEAR P0HER RUN IIME - 12:57:19 J ~~~

CNP - ISSS - RHM EMPLOYEE CONCERN PROGRAM SYSTEM (ECPS) RUN DATE - 12/02/86 i LIST OF EMPLOYEE CONCERN INFORMATION

_ _ CATEGORY _EN _ DES fROCESS A CUTPUT____SUSCATEGORYa_23508. PVC.LIQUIDTIGHT FLEX CONDUIT S '

GENERIO KEYHORD A H APPL QTC/NSRS . P KEYWORD B CONCERN SUB R PLT BB5H INVESTIGATION S CONCERN KEYHORD C NUM3ER CAT CAT D LOC FLQB REPORT R DESCRIPTION KEYWORD D ,

10 973-D03 EN 23508 N H3N NNYY SR PLASTIC TYPE FLEX CONDUIT INSTALLED DESIGN REVIEH T50156 REPORT BETHEEN INSTRUMENTS AND FOR ALL FLOO INSTALLATION m

j R MOUNTED PANELS (UNITS 1 & 2) CANNO ELECTRICAL T HITHSTAND HEAT GENERATED IN CONTAI CONDUIT NMENT AND VOLVE ROOMS. CI STATED A FRIEND (KNDHN) SAID THAT ALL SUCH IN

,s STALLATIONS HAD TO BE CHANGED AT SEQ J -~ ~ UGYAH. CI COULD NOT PROVIDE SPECIFI 8 C PANEL / CONDUIT I.D. S'S. ENGINEER (KNOWN) HAS BEEN CONTACTED, AS HAS K q NOXVILLE ENGINEERING, BUT NO ACTION O HAS BEEN TAKEN. CONSTRUCTION DEPT. 8 CONCERN. BOTH UNITS. 1985. CI HAS NO MORE INFORMATION. NO FOLLOW 9- 1 CONCERNS FOR CAT'EGORY EN SUBCATEGORY 23508 i O e O <

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