ML20153B084

Safety Evaluation Re Employee Concern Element Rept 21304, Electrical Procedures Do Not Properly Identify IEEE Stds

ML20153B084
Person / Time
Site:	Sequoyah
Issue date:	03/11/1988
From:	NRC OFFICE OF SPECIAL PROJECTS
To:
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References
NUDOCS 8803210375
Download: ML20153B084 (2)

Text

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SAFETY EVALUATION REPORT BY THE OFFICE OF SPECIAL PROJECTS EMPLOYEE CCt!CERN ELEMENT REPORT 21304 "ELECTRICAL PROCEDURES 00 NOT PROPERLY IDENTIFY IEEE STANDARDS" TENNESSEE VALLEY AUTHORITY SEQUOYAH fiUCLEAR DOWER PLANT, UNITS 1 AND 2 DOCKET NOS. 50-327 AND 50-328 I.

SUBJECT Category:

Engineering (20,000)

Subcategory:

Electrical Procedures (21,300)

Element:

Electrical Procedures Do Not Properly Identify IEEE Standards (21304)

Employee Concern:

IN-86-2E9-X11 The basis for element report 21304 Revision 0, prepared December 15, 1986, is a kctts Bar employee concern stating, "If TVA electrical procedures do not include IEEE standard requirements or their equivalent, numerous problems can result."

II.

SUMMARY

OF ISSUE TVA review.o this concern for applicability to Sequoyah.

A TVA review group studied this concern and found that the TVA presentation of electrical information may not always be effective but their review found that electrical stancards and requirements have been effectively implemented in Sequoyah electrical designs.

III. EVALUATION NRC and its consultant, SAIC, reviewed the employee concern.

This concern and a similar concern element 21302 entitled, "Inadequate Electrical Testing, Planning and Engineering Participatien" were the subject of the February 10, 4

1987 meeting in the TVA Bethesda offices.

Additionally, employee concerns 21301 and 21303 regarding the conduct of electrical calculations and inadequate electrical standards and guides are also related to this concern.

In response to the staff's concern expressed in the February 10, 1987 meeting, TVA submitted additional.information in their letter of March 19, 1987.

In this submittal TVA demonstrated that the requirements of IEEE Standards 308-1971 and IEEE Standard 317-1971 have been included for the Auxiliary Feedwater System.

Based on this TVA has concluded that the requirements of IEEE Standards have been ade,quately reflected in the design criteria, guides, standards and specificaticns.

8803210375 880311 PDR ADOCK 05000328 P

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l During the recent November 30, 1987 NRC audit, NRC and SAIC reviewed the adequacy of the auxiliary feedwater system.

Specifically, electrical and systems operatienal and preoperational test data were reviewed and system performance assessed and was acceptable to the staff.

IV. CONCLUSION Based on our review of electrical and instrumentation calculations, the auxiliary feedwater system operational performance data, and the similar reviews of electrical adequacy and electrical standards in employee concerns 21301, 21302 and 21303, we can conclude that while some aspects.of electrical 4

i testing ard planning were poorly documented, the recent TVA reanalyses and the operaticnal data shcw that the electrical design areas appear to be adequately desigt.ed and the operational probl %.s are normal and minor. Therefore, this concern is considered to be satisfactorily resolved for Sequoyah.

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