Text

Proposed Tech Specs 3.8.1.14 Re Surveillance Requirements
	ML20128M568
Person / Time
Site:	Grand Gulf
Issue date:	10/09/1996
From:	; ENTERGY OPERATIONS, INC.
To:	;
Shared Package
ML20128M566	List: ML20128M559; ML20128M568;
References
	NUDOCS 9610160116
	Download: ML20128M568 (3)
	v • d • e

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AC Sources-Operating B 3.8.1 i

BASES i

SURVEILLANCE SR 3.8.1.14 (continued) i REQUIREMENTS s 0.9.

This power factor is chosen to be representative of t

the actual design basis inductive loading that the DG could j

experience.

During the test the generator voltage and frequency is 4160 416 volts and 60 1 1.2 Hz within 10 i

i seconds after the start signal and the steady state generator voltage and frequency is maintained within these

{

limits for the duration of the test.

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The 18 month Frequency is consistent with the i

recommendations of Regulatory Guide 1.108 (Ref. 9),

paragraph 2.a.(3); takes into consideration plant conditions i

required to perform the Surveillance; and is intended to be l

consistent with expected fuel cycle 1,engths.

}

This Surveillance is modified by two Notes.

Note 1 states that momentary transients due to changing bus loads do not invalidate this test. The DG 11 and 12 load band is provided to avoid routine overloading of the TDI DG.

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Routine overloading may result in more frequent teardown inspections in accordance with vendor recommendations in

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order to maintain DG OPERASILITY.

Similarly, momentary i

power factor transients above the limit do not invalidate the test.

i Note 2 stipulates that credit may be taken.for l

unplanned events that satisfy this SR.

Examples of unplanned events may include:

[

1)

Unexpected operational events which cause the j

equipment to Surveillance, perform the function specified by.this i

for which adequate documentation of the required performance is available; and 2)

Post maintenance testing that requires performance of this Surveillance in order to restore the component to OPERABLE, provided the maintenance was required, or performed in conjunction with maintenance required to maintain OPERABILITY or reliability.

(continued)

GRAND GULF B 3.8-27 Revision No. 1, CN 5036 9610160116 961009 PDR ADOCK 05000416 P

PDR

.s AC Sources-Operating B 3.8.1 BASES SURVEILLANCE SR 3.8.1.14 (continued) i REQUIREMENTS i

(continued)

When this Surveillance is conducted during Mode 1 or 2, the following special administrative controls are placed in effect (Ref.16):

1)

Only one DG may be tested in parallel to the offsite grid at a time, 2)

No additional maintenance or testing may be performed or planned to be performed on required safety systems, subsystems, trains or components and devices that depend on the remaining DGs as sources of emergency i

power, and 3)

Precautions should be taken to a' void conducting the test during periods of severe weather, unstable offsite grid conditions, or maintenance and other test conditions that have an adverse effect on the test.

SR 3.8.1.15 This Surveillan'ce demonstrates that the diesel engine can restart from a hot condition, such as subsequent to shutdown fron normal Surveillances, and achieve the required voltage i

(continued)

GRAND GULF 8 3.8-27a Revision No. 1, CN 5036

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AC Sources-Operating 8 3.8.1 BASES SURVEILLANCE Diesel Generator Test Schedule (continued)

REQUIREMENTS less than 24 hours2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br /> should be considered an invalid test and not count towards the seven consecutive failure free starts, and the consecutive test count is not reset.

A test interval in excess of 7 days (or 31 days, as appropriate) constitutes a failure to meet SRs and results in the associated DG being declared inoperable.

It does not, however, constitute a valid test or failure of the OG, and any consecutive test count is not reset.

REFERENCES 1.

10 CFR 50, Appendix A, GDC 17, 2.

UFSAR, Chapter 8.

3.

Regulatory Guide 1.9.

4.

UFSAR, Chapter 6.

5.

UFSAR, Chapter 15.

6.

Regulatory Guide 1.93.