ML20108F374
| ML20108F374 | |
| Person / Time | |
|---|---|
| Site: | Fermi  |
| Issue date: | 03/09/1985 |
| From: | Jens W DETROIT EDISON CO. |
| To: | Youngblood B Office of Nuclear Reactor Regulation |
| References | |
| NE-85-0455, NE-85-455, NUDOCS 8503120412 | |
| Download: ML20108F374 (4) | |
Text
-
i r:n-m.um 0:4780%x.
Dekoit b l @ y:y: n _
- pyyy"'8"5 March 9, 1985 NE-85-0455 Director of Nuclear Reactor Regulation Attention:
Mr. B. J.-Youngblood, Chief Licensing Branch No. 1 Division of Licensing U. S. Nuclear Regulatory Commission Washington, D.C. 20555.
Dear Mr. Youngblood:
Reference:
(1)
Fermi 2 NRC Docket No. 50-341 (2)
Detroit Edison to NRC Letter, " Request to Revise Draft Fermi 2 Technical Specifica-tions", NE-85-0329, February 14, 1985
Subject:
Additional Change to Draft Fermi 2 Technical Soecification for Diesel Generators The reference (2) letter requested certain modifications to draft Technical Specification 3/4.8.1.
Based-on a telephone conference on March 8, 1985 with Mr. A. Ungaro of your Power Systems Branch, attached please find a revised change to one page of that specification.
The remaining pages are re-quested to be revised as forwarded to you in the reference (2) letter.
Additional justification for the attached change is'given below.
The attached mark up of Technical Specification 3.8.1.1 action statements a and b address the Fermi 2 specific re-quirements to verify operability of the remaining Emergency Diesel Generators (EDGs).
The existing action statements do not require that the EDGs be loaded, but the vendors recom-mendation for operating the EDGs includes a load period-any-time the EDCs are started.
The vendor recommended starting, loading and shutdown.of the EDGs cannot be accomplished within one hour for the remaining EDGs as required by the current' action statements.
The vendor recommended slow start and load of an EDG brings the EDG.to a low idle, then gradu-ally increases speed, gradually loads the EDG and finally shuts down the EDG in a prescribed manner.
These actions,
, summarized below, take approximately 4 hours4.62963e-5 days <br />0.00111 hours <br />6.613757e-6 weeks <br />1.522e-6 months <br /> per EDG.
hDR
{1 DOC 00 3413
.A PDR ~
.~: y ;
~
~
s Mr.lB. J.1Youngblood
. March'9,;1985
-NE-85-0455
)Page 2-A slow start will be the normal method of starting each EDG withithe exception of the once per 184 day demonstration of fast start. capability per. Technical Specifications.
The EDG
. slow startLis accomplished by1 bringing the EDG to.a low speed idle (approximately 500 RPM) while the engine auxiliary
- systems are' warming.
The engine speed is then gradually in-creased to-the. synchronous speed of 900 RPM.
This portion of the. starting; sequence takes approximately 15 minutes and-is without engine load..
The loading of the-engine'is also' gradual and involves applying; load :in a series ofesteps and; recording engine para-
' meters The EDG^ output ~ breaker,is closed,which ties the EDG to the grid. af ter completion' ori the slow ' start sequence.
The-initial loading of the EDG~is approximately 700 kilowatts (KW).
This load is applied only briefly. -The~ load is.then:
increased to between 60 and 100% of EDG-continuous rating..as recommended by the vendor.
Fermi 2 procedures require increasing the load to-approximately.605.of the continuous rating and maintaining this load for one (1) hour after stabilization of engine temperatures'and pressures-(requires about 15 minutes).
During this.one hour the vendor recommends that more than 30 engine parameters be recorded at least twice.
Subsequently-the EDG load is increased to 100%
of continuous rating 1(2850 KW)..After temperatures and pressures have stabilized the EDG is run at this load for one hour.
The EDG load is then reduced to approximately 60%~and the engine ~is-runLat this load for about'five' minutes. 'The load is then ~ gradually reduced to less than 500 Di at which point the output breaker is' opened...The EDG is then operated without load for about five minutes for cooldown.- The EDG is then~ shutdown and placed in standby condition.
- I hereby certify that this proposed additional change reflects the plant, the-Final Safety. Analysis Report, and the staff's Safety Evaluation Report in-all. material aspects.
Minor changes may be necessary. to the FSAR and'SER if the proposed. change is approved.~
Please direct any question'to.Mr.-0..K..Earle at (313)-
586-4211.
Sincerely, ff
[)l l
Attachment
[ggg I
cc:
44r.-P. M. Byron
/
Mr. M. D. Lynch
<Mr.;R. L. Perch Mr. A. R. Ungaro TUSNRC Document Control Desk Washington, D.C.120555
I, WAYNE H. JENS,.do hereby affirm that the foregoing statements are based on facts and circumstances which are true and accurate'to'the best of-my knowledge and
- belief, t
kt 6
WAYNE H.dJENS Vice President Nuclear Operations f
day of
, 1985 t
On this before me personally appeared Wayne H. Jens, being first duly' sworn and says that he executed the foregoing as his free act and deed.
hk< e v?
7 Notary Public
. MARCIA GUCK Notary Public, Washtenaw County, MI My Commission Expires Dec.23,1937 Y
k 4
4W
1
- m - -.m 3/4.8 ELECTRICAL POWER SYSTEMS f'{
, _,, _[ $
3/4.8.1 A.C. SOURCES A.C. SOURCES - OPERATING LIMITING CONDITION FOR OPERATION As a minimum, the following A.C. electrical power sources shall be 3.8.1.1 OPERA 8LE:
Two physically independent circuits between the offsite transmission a.
network and the onsite Class 1E distribution system, and Two separate and independent onsite A.C. electrical power sources, b.
Division I and Division II, each consisting of two emergency diesel generators, each' diesel generator with:
A separate day fuel tank containing a minimum of 210 gallons of 1.
- fuel,
(
2.
A separate fuel storage system containing a minimum of f
35,280 gallons of fuel, and 3.
A separate fuel transfer pump.
i APPLICABILITY: OPERATIONAL CONDITIONS 1, 2, and 3.
i ACTION:
With one or both offsite circuits of the above required A.C.
l a.
electrical power sources inoperable, be in at least HOT SHUTDOWN within 12 hours1.388889e-4 days <br />0.00333 hours <br />1.984127e-5 weeks <br />4.566e-6 months <br /> and in COLD SHUTDOWN within the next 24 hours2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br />; demonstrate the OPERABILITY of the remaining A.C. sources by per-3_
.:.' ^._"
^
formingSurveillanceRequirementy4.8.1.1.1tig within one hour and once per 8 hours9.259259e-5 days <br />0.00222 hours <br />1.322751e-5 weeks <br />3.044e-6 months <br /> thereafter(and by Performing Surve;hwn Regu for : : dh.;l g;. ;r;'.;r ;t :
'Lt.l.l.2 o.4, or ewe tlesd sewerat.c ai. t.'me, so;%;w 2.4 hours4.62963e-5 days <br />0.00111 hours <br />6.613757e-6 weeks <br />1.522e-6 months <br /> and at least once Per 24 houn With one*or both diesel generators in one of the above required onsite A.C. electrical power divisions inoperable, demonstrate theN"*
b.
OPERABILITY of the remaining A.C. sources (by performing Surveillance Requirement)( 4.8.1.1.k :nd 1.0..1.0.e.% f;r en; de.;l ;;n; ret ^-
-within one hour and at least once per 8 hours9.259259e-5 days <br />0.00222 hours <br />1.322751e-5 weeks <br />3.044e-6 months <br /> thereafter; et a tf de inoperable division to OPERABLE status within 72 hours8.333333e-4 days <br />0.02 hours <br />1.190476e-4 weeks <br />2.7396e-5 months <br /> or restore be in at least HOT SHUTDOWN within the next 12 hours1.388889e-4 days <br />0.00333 hours <br />1.984127e-5 weeks <br />4.566e-6 months <br /> and in COLD s
SHUTDOWN within the following 24 hours2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br />.
S irewewi 'I. 9. l.1. 2. a. ti, f.,
awl by perfov.o'in$
urveillawce Re;%;w 24 burs awl d leasi owe diesel ewerab d abe, wi 3
once per 2A hours thev e af ter.
9 FERMI - UNIT 2 3/4 8-1
-