ML20207L004

Rev 0 to Sequoyah Element Nonrestart Justification Summary, Cable Termination & Splicing,No Megger Test on Low Voltage Cables

ML20207L004
Person / Time
Site:	Sequoyah
Issue date:	12/22/1986
From:	Mcnutt G, Nesbitt P, Russell J TENNESSEE VALLEY AUTHORITY
To:
Shared Package
ML20207K654	List: ML20207K650 ML20207K665 ML20207K686 ML20207K717 ML20207K731 ML20207K740 ML20207K758 ML20207K785 ML20207K800 ML20207K821 ML20207K827 ML20207K849 ML20207K858 ML20207K881 ML20207K917 ML20207K942 ML20207K968 ML20207K979 ML20207L004 ML20207L017 ML20207L057 ML20207L069 ML20207L089
References
241.3(B), 241.3(B)-R, 241.3(B)-R00, NUDOCS 8701090585
Download: ML20207L004 (4)

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• TVA EMPLOYEE CONCERNS REPORT NUMBER: 241.3 (8)

SPECIAL PROGRAM f REPORT TYPE: SEQUOYAH ELEMENT REVISION NUMBER: 0 y NON-RESTART JUSTIFICATION SUPNARY TITLE: CABLE TERMINATION AND SPLICING No Megger Test on Low Voltage Cables PAGE 1 0F 2 i i

9 REASON FOR REVISION: .

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

SUMMARY

SU8 CATEGORY / ELEMENT 241.3 The issue in the concern was raised at Bellefonte and is considered generic to all plants including SQN since megger test requirements may be similar for all plants. No industry requirements but only recommendations (e.g., IEEE Standard 422-1977) exist for megger testing low voltage cables. In spite of this TVA has indicated that in addition to megger testing medium voltage circuits, these tests have been conducted for 100 HP and larger low voltage (480V) motor circuits. Current megger testing requirements (which make megger testing of medium voltage cables mandatory) are covered in the modification and Additions Instructions M&Al-7.

Also, performance of megger test on cables is just a supplement to good cable installation practices as these tests may not necessarily detect damage that could eventually lead to cable failure in servke. It is concluded that this concern is not considered a plant safety issue and

. therefore is not a restart item.

ATTACHMENT: List of Issues for Electrical ELEMENT NO. 241.3 Date: 10/29/86 03510 - Page 2

C LIST OF E ^ ICAL ISSUES /O -

SCs CESTA no ELEENT RL?'2ER 241.3 BY: G. S. Wu

• Date: 10/29/85 Mo Megger Test On Low voltage Cables ELEMENT WHERE RESPON-CONCERh m E2(S) ISSUES ADDRcSSED SIBLE GENERAL APPROACH / METHODOLOGY FOR ELEMENT REPORT 21-85-094-CC6 No cegger tests are performed on 241.3 GW a. Review transcript of NRC investigative inter-

• Electrical terminatices do low voltage cables view.

nct have low voltage cegger test

• b. Review construction specifications and procedures to identify SQN megger test requirements,

c. Review industry requirements for megger tests.

d. Review existing TVA reports (including Construction, QA/QC, Oper ations, and Material Control reports for the Employee Concerns Evaldation Program) '

and determine whether they adequately address the issue,

e. Assess validity of the concern and determine whether problems exist at SQN regarding low voltage megger testing.

OCCUPENTS NEEDED FOR REVIEW

a. General Construction Specification G-38, R8

b. Quality Control Procedure - QCP-3.05, R26

c. Quality Control Procedure - QCP-3.06-3, R8

d. Quality Control Procedure - QCP-3.06-4, R4

e. Quality Control Test Procedure - QCT-3.06-1, R3

f. IEEE Standard 422-1977 l

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REFERENCE - ECPSI2OJ-ECPSI21C TENNESSEE VALLEY AUTHORITY PAGE -

154 FREQUENCY - REQUEST OFFICE OF NUCLEAR P0HER RUN TIME - 12:57:19 O DNe - IS$$ - RHM EMPLOYEE CONCERN PROGRAM SYSTEM (ECPS) RUN DATE - 12/02/86 LIST OF EMPLOYEE CONCERN INFORMATION CATEGORY: EN DES PROCESS & OUTPUT SUBCATEGORY: 24103 BELLEFONTE MEGGER TESTS O S GENERIC KEYHORD A KEYWORD B H APPL QTC/NSRS P CONCERN SUB R PLT BBSW INVESTIGATION S CONCERN KEYHORD C NUMBER CAT CAT D LOC FLQB REPORT R DESCRIPTION KEYNORD D XX 094-006 EN 24103 N BLN YYYY I-85-645-BLN SR BELLEFONTE: ELECTRICAL TERMINATIONS TESTING T50150 REPORT DO NOT NAVE LON VOLTAGE MEGGER TEST. NONCONFORMANCE CONSTRUCTION DEPT. CONCERN. CI HA ELECTRICAL O S NO FURTHER INFORMATION. NO FOLLOW UP REQUIRED.

TERMINATIONS .

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