ML20151L803

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Proposed Tech Specs Re Separation of 24 H Diesel Generator Run from Simulated Loss of Offsite Power/Eccs Actuation Test
ML20151L803
Person / Time
Site: Grand Gulf Entergy icon.png
Issue date: 07/26/1988
From:
SYSTEM ENERGY RESOURCES, INC.
To:
Shared Package
ML20151L797 List:
References
NUDOCS 8808040145
Download: ML20151L803 (5)
v • d • e


Text

hlL '86 04 ELECTRICAL POWER SYSTEMS p,*:

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$URVEILLANCE REQUIREMENTS (Continued) 5.

Verifying that on an ECCS actuation test signal, without loss of offsite power, the diesel generator starts on the auto-start signal and operates on standby for greater than or equal to 5 minutes. The generator voltage and frequency shall be 4160 1 416 volts and 6011.2 Hz within 10 seconds after the auto-start signal; the steady state generator voltage and frequency shall be maintained within these limits during this test.

6.

---[0ELETE0]

Ns en.f 7.

Simulating a' loss of offsite power in conjunction with an ECCS actuation test signal, and:

a), For Division 1 and 2:

1)

Verifying deenergization of the emergency busses and load shedding from the emergency busses.

2)

Verifying the diesel generator starts on the auto-start signal, energiz'es the emergency busses with pemanently connected loads within 10 seconds, energizes the auto-ccnnected shutdown loads through the load sequencer g(

and operates for greater than or equal to 5 minutes while its generator is loaded with the emergency loads.

After energization, the steady state voltage and frequency of the emergency busses shall be maintained at 4160 1 416 volts and 60 1 1.2 Hz during this test.

b)

For Division 3-1)

Verifying de-energization of the emergen:y bus.

2)

Verifying the diesel generator s' tarts on the auto-start signal, energites the emergency bus with the permanently connected loads within 10 seconds and the autoconnected emergency loads within 20 seconds and operates for greater than or equal to 5 minutes while its generator is loaded with the emergency loads. After energization, the steady state voltage and frequency of the emergency bus shall be maintained at 4160 1 416 volts and 60 t 1.2 Hz during this test.

8.

Verifying that all automatic diesel generator trips are automatica11y' bypassed upon an ECCS actuation signal except:

a)

For Divisions 1 and 2, engine overspeed, generator dif-ferential current, and low lube oil pressure.

+

b)

For Division 3, engine overspeed and generator differential

(

current.

GRAND GULF-UNIT 1 -

3/4 8-5 Amendment No.

6B l

3

--Effeethe-DauH4cT 26 hg

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blL 'R8 -0(o ELECTRICAL POWER SYSTEMS 67.;

SURVEILLANCE REQUIREMENTS (Continued) 9.

Verifying the diesel generator operates for at least 24 hours2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br />.

Diesel generators 11 and 12 shall be loaded to greater than or equal to 5450 kW but not to exceed 5740 kW for 24 hours2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br />.

Diesel generator 13 shall be loaded to greater than or equal to 3630 kW for the first 2 hours2.314815e-5 days <br />5.555556e-4 hours <br />3.306878e-6 weeks <br />7.61e-7 months <br /> of this test and to 3300 kW during the remaining 22 hours2.546296e-4 days <br />0.00611 hours <br />3.637566e-5 weeks <br />8.371e-6 months <br />. The generator voltage and frequency shall be 4160 1 416 volts and 60

  • 1.2 Hz within 10 seconds after the start signal; the steady state generator voltage and frequency shall be maintained within these limits during this test. Within 5 zinute: :fter4 0 p10 tin-

-testwrfem Serveillance-Requkement-4,Srlrir2rd.3.tMs-24-houe-

).2)

-:ndb).2)*.

10.

Verifying that the auto-connected loads to each diesel generator do not exceed 5740 kW for diesel generators 11 and 12 and 3300 kW for diesel generator 13.

i 11.

Verifying the diesel generator's capability to:

a)

Synchronize with the offsite power source while the generator is loaded with its emergency loads upon a simulated restora-tion of offsite power,

~

b)

Transfer'its loads to the offsite power source, and c)

Be restored to its standby status.

12.

Verifying that with the diesel generator operating in a test mode and connected to its bus that a simulated ECCS actuation signal overrides the test mode by returning the diesel generator to standby operation.

13.

[ DELETE 0]

14.

[ DELETED]

15.

Verifying that the automatic load sequence timer is OPERABLE with the interval between each load block within i 10% of its design interval for diesel generators 11 and 12.

- :::pl:ted, it is-net-necenety-to-repeat-the-preceding-24-hour-test.

Insteadr the diest4-gener-ator-say-be Operated-at-the-4ead-specitied-by-Surve441ance--

5:;eir:::nt 4.Brir1 rarer 6-for-ene-hour-or-unti4-operat-ing-temperatures-have--

--et: bili: d.

GRAND GULF-UNIT 1 3/4 8-6 Amendment No.18 6, -

Effc:th 5 te: 07cc %-

INSERT 6.

Operating at greater than or equal to 5,i st. not io exceed 5740 for diesel generators 11 and 12 and greater t' ey;a'

.o 3300 kW for--

diesel generator 13 for.one hour or until.pCFating temperatures have stabilized. Within 5 minutes perform Surveillance. Requirement 4.8.1.1.2.d.7.a)2)andb)2).

l J12 MISC 88062801 - 4

)

1

([' to AECM-88/0150 GE Nuclear Energy July 19, 1988 c~.n sy,:.; e a.,

m :w:w.r. !r.::e a wn

....; 5)

Mr. J. G. Cesare, Director Nuclear Licensing & Safety uN 1 b3b0 Systems Energy Resources, Inc.

Aucu3aa suppogT P.O. Box 23070 S. d.R.I. -

Jackson, MS 39225-3070 Grand Gulf Nuclear Station DIESEL GENERATOR OPERABILITY j

TECH SPEC SURVEILLANCE REQUIREMENTS SEGE-88/052 ATTENTION: Gary Sandlin

Dear Mr. Cesare:

Per SERI's request, we have completed our review of your proposed Tech Spec change "NL-88/06 separate 24 hour2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br /> diesel generator test from LOP /LOCA test."

It is concluded that the proposed change of separating the performance of the LOP /LOCA test requirements from immediately (5 minutes) after the 24 hour2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br /> test run and replacing that with performing the same LOP /LOCA test after stabilization of full load operating temperatures vill still meet the intent of the Tech Spec (and Regulatory Guide 1.108) in demonstrating the functional capability of the diesel generators at full load temperature conditions.

It is judged that after one hour cf operation with the loads given in the proposed Spec, full load temperature conditions would have been established for the test.

Therefore, GE concurs with the attached proposed Tech Spec change.

If you have any questions, please call me or Tommy Lee of our licensing staff.

Sincerely y urs a

o A. R. Smith Grand Gulf Engineering Services Manager ARS/klj cc:

T. H. Cloninger D. J. Kemppainen O. D. Kingsley, Jr.

M. T. Savoff F. W. Titus M. L. Crawford S. A. Bennett Central File File:

7.2.4 TCL88024

___ _ _ _ _ _ _ _ - _ _ ___ to AECM-88/0150 o

Imo Delaval Inc.

Enterprise Engine Divhion Enterpnse way and 85th Avenue P.O. Box 2161 Osuand. CA 946:1 415 577 7400 e

      • VIA TELECOPY ***

- u.;O IU{. N.' ]91]y Date:

July 18, 1988 AUCLigg gu.

ccQ3, Gd.R.I.

To:

Grand Gulf Nuclear Station Attention:

Bill Angle

Reference:

Your telecopy of 7/18/88 "One Hour Run" We concur that the Diesel Operating temperatures will be stable within one hour of a start from keepwarm temperature, and that running another 23 hours2.662037e-4 days <br />0.00639 hours <br />3.80291e-5 weeks <br />8.7515e-6 months <br /> prior to a loop /loca test will serve no purpose.

Your specification change therefore seems warranted, ours Truly, A. ?Y/w M.

H.

Lowrey ML:bb

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