ML20137F677

Notice of Violation from Insp on 970119-0301.Violations Noted:Alarm Response Procedure for 2A-A Emergency Diesel Generator Inadequate in Items Listed

ML20137F677
Person / Time
Site:	Sequoyah
Issue date:	03/18/1997
From:	NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION II)
To:
Shared Package
ML20137F667	List: ML20137F663 ML20137F677 ML20137F708
References
50-327-97-01, 50-327-97-1, 50-328-97-01, 50-328-97-1, NUDOCS 9704010181
Download: ML20137F677 (2)

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f NOTICE OF VIOLATION Tennessee Valley Authority Docket Nos. 50 327 and 50 328 Sequoyah Units 1 & 2 License Nos. DRP-77 and DRP-79 During an NRC inspection conducted from January 19 through March 1, 1997, a violation of NRC requirements was identified. In accordance with the " General Statement of Policy and Procedures for NRC Enforcement Actions," NUREG 1600, the violation is listed below:

Technical Specification 6.8.1.a requires, in part, that procedures shall be established, implemented, and maintained covering the activities recommended in Appendix A of Regulatory Guide 1.33, Section 5, includes procedures for alarm conditions. This section lists the requirements for safety related alarm response procedures which included: (1) the meaning of the annunciator, (2) the source of the signal, (3) the immediate automatic action, (4) the immediate operation action, and (5) the long range action.

Contrary to the above, the alarm res)onse procedure for the 2A-A Emergency Diesel Generator was inadequate in t1at:

1. Emergency diesel generator (EDG) alarm response procedure 0 AR M26 C (B 2), Diesel Generator 2A A Exhaust Temperature Difference, listed the setpoints for the three alarm conditions as 100 *F: however, the actual setpoints were 200 F.

2. EDG alarm response procedure 0-AR M26-C (B-2), Diesel Generator 2A A Exhaust Temperature Difference, required the diesel to be declared inoperable if the local tem)eratures exceeded 100 F differential:

however, the EDG would not aecome inoperable until the temperatures exceeded 200 *F differential.

3. EDG alarm response procedure 0 AR M26 C (B-1), Diesel Generator 2A A Governor Actuator Difference, listed the alarm setpoint as 0.04 (4%)

difference between the hydraulic governor scales of the two engines.

The local alarm response procedure noted that acceptable o>eration would be verified to be less than 0.1 (10%) difference between t1e governor scales. The control room alarm response procedure incorrectly listed acceptable operation as less than 1.0 (100%) difference between the governor scales.

4. EDG alarm response procedure 0 AR M26 C (B 2), Diesel Generator 2A A Exhaust Temperature Difference, and EDG alarm response procedure 0 AR-M26 C (B-1), Diesel Generator 2A A Governor Actuator Difference, both require the EDG to be declared inoperable if the turbocharger inlet temperature exceeded 100 *F differential: however, the alarm response procedures did not provide guidance or limitations for continuing to Enclosure 1 9704010181 970318 PDR ADOCK 05000327 G PDR

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operate the EDG with valid alarm conditions. These procedures did not I provide sufficient immediate and long range operator actions.

This is a Severity Level IV Violation (Supplement I).

Pursuant to the provisions of 10 CFR 2.201, Tenriessee Valley Authority is hereby required to submit a written statement or explanation to the U.S. 4 Nuclear Regulatory Commission, ATTN: Document Control Desk, Washington, D.C.

20555 with a copy to the Regional Administrator, Region II, and a copy to the NRC Resident Inspector at the facility that is the subject of this Notice,

within 30 days of the date of the letter transmitting this Notice of Violation (Notice). This reply should be clearly marked as a " Reply to a Notice of i Violation" and should include for each violation: (1) the reason for the 4

violation, or, if contested, the basis for disputing the violation, (2) the

corrective steps that have been taken and the results achieved, (3) the corrective steps that will be taken to avoid further violations, and (4) the

{ date when full compliance will be achieved. Your response may reference or  !

include previously docketed correspondence, if the correspondence adecuately  !

addresses the required response. If an adequate reply is not receivec within the time specified in this Notice, an order or a Demand for Information may be

issued as to why the license should not be modified, suspended, or revoked, or .

4 why such other action as may be proper should not be taken. Where good cause l j is shown, consideration will be given to extending the response time.

. Because your res>onse will be placed in the NRC Public Document Room (PDR), to

'; the extent possi ale, it should not include any personal privacy, proprietary, j or safeguards information so that it can be placed in the PDR without i redaction. If personal privacy or proprietary information is necessary to provide an acceptable response, then please provide a bracketed copy of your response that identifies the information that should be protected and a redacted copy of your response that deletes such information. If you request

,' withholding of such material, you must s)ecifically identify the portions of-

! your response that you seek to have withleid and provide in detail the bases for your claim of withholding (e.g., explain why the disclosure of information will create an unwarranted invasion of personal privacy or provide the '

i information required by 10 CFR 2.790(b) to support a request for withholding confidential commercial or financial information). If safeguards information is necessary to provide an acceptable response, please provide the level of i

, protection described in 10 CFR 73.21.  !

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- Dated at Atlanta, Georgia this 18th day of March 1997 4

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