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Proposed Tech Spec Changes,Permitting Continued Operation at Rated Thermal Power for Specified Period of Time Following Dropped Control Element Assembly
	ML17216A255
Person / Time
Site:	Saint Lucie
Issue date:	07/19/1985
From:	; FLORIDA POWER & LIGHT CO.
To:	;
Shared Package
ML17216A253	List: ML17216A252; ML17216A255;
References
	NUDOCS 8507290394
	Download: ML17216A255 (11)
	v • d • e

REACTIVITY CONTROL SYSTEMS 3 4.1.3 NVABLE CONTROL ASSEMBLIES FULL LENGTH CEA POSITION LIMITING CONDITION FOR OPERATION 3.1.3.1 The CEA Block Circuit and all full length (shutdown and regulating)

CEAs shall be OPERABLE with each CEA of a given group posittoned within 7.5 inches (indicated position) of all oCher CEAs tn tts group.

S'il NOES 1>> and 2>>.

APPLICABILITY:

ACTION:

a. With ane ar msre'full length CEAs tnaperable due to being immovable as a result of excessive friction or mechanical 1nterference or known ta be untrtppabte. os'ecIA<kJ+ 'flips TMR QtQTJSO<<ld AngQLl r emvsac~~ o% Sfcagac>>ho>>

I I ~s sc 4<sific> wiaLio I kovr adobe tn HOT STAHOBY within 6 hours6.944444e-5 days 0.00167 hours 9.920635e-6 weeks 2.283e-6 months .

b. With the CEA Block Ctrcu1t inoperable, within 6 hours6.944444e-5 days 0.00167 hours 9.920635e-6 weeks 2.283e-6 months either:

I~ Wive not, C.KA posnsoQ iuoi~oo. pan. gr>>ul>>

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withdraw the CEAs tn group 7 to less than 5X insertion and place and maintain the CEA drive system made switch tn either the "Hanual" or "Off" postCton, ar

3. Be in at least HOT STANOBY.

C. lxl<4L. oue full tc~ll CE,A iuoperw'ate lac 4o awscs ot<<oo. Wu Wrcssc3 bg A~o 1 > ab>>v>>> Lo+

watl au g4 $ b>>vo Opac sf'>>d aliquant vcpiegeeeuTS ouo en<<oo. fvllz w'i'll vkvawu or wstkiu dh, Lo&TBW SYeaOV sTATG Smsannou EMITS IC I+ CECA Q~ut Tj o~~ io v ooas 1 > z. o ag cx<<uYiiu- ~

d. With ane or aare full length CEAs mtsaltgned from any other CEAs in its group by mare than 7.5 inches but less than 15 inches, aperaCion in NOES 1 and 2 may continue, provided that wtthtn one haur the misaltgned CEA(s} is either:

l. Restored to OPERABLE staCus within ICs abave specified alignment requirements, or See Special Test Except1ons 3.IO.2 and 3.10.5.

ST. LUCIE - UNIT 1 3/4 '1-20 Anendment Ha. s 7 8g07PPOggg 850719 PDR ADOCK 05000335, P PDR

REACTIVITY CONIOL SYSTEMS FULL LENGTH CEA POSITION (Continued)

LIMITING CONDITIOII FOR OPERATION tContinued 2., Declared inoperable AAICI S>oTI I py SHL>TQCc>'"'lAPCzlP

<pc><l>ct nirnrs r> n Sp'nf>rnid>~ Si I ~ <> I~

After declaring the CEA inoPerable, operation in I'.DOES 1 and 2 may continue pvr-v*> r Tc> T>>e

)rr, F>rn+icv> 3 I s.4 pro '>o per occurrence with a total accumulated time of <<14 c'or up to 7 days RE~"<<>>""~-'r-days per calendar year provided all of the following conditions are met:

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a) - The THERMAL POHER-level--shel.l-be-reduced-t~g-of the maximum aHowable-THEIUIAL P(8~el fo>c-the-existing Reactor Coolant Pump-combinac!on-within-one-hour if- negative-reactivity-insert4o~q>rired a) vu>~H>o a>>r mo. THe rewclc>osc. oe T>l>> CGA ~ ro TI>m caoc>vp w>TH TII~ IQoforol Ice CE>s $ xo>I bc.

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~ %vt>coped oporcf>rn maintaining-the- a~ert4on-

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--1 evet shaH- be-restricted-pursuant-to-Spectf4cat4on.

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e. Hith one full length CEA misalianed frc>n any other CEA in its group by 15 inc~r-morer redac allowable THEFv&~4tER-to~NI>-of'he.

maximum THE>USL-POHE

~ Reactor coolant-pump-combination within-one I-If-negative--

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-boration"shall ty-inse hour THERMAL.POMER be used-. Hithin- one. hour after reducing-as-roqu4ed-abover eithe~

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STi LUCIE - UNIT 1 3/4 1-21 z.. becu<cc ~me. CQ iuopcr~)c ovO scvsiry SAQTQOW< QiRQtlI Qcc.

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REACTIVITY CONTROL SYSTEHS FULL LENGTH CEA POSITION Continued)

LIHITING CONQITION FOR OPERATION Continued

" Wi'th more than one full length CEA inoperable or mfsalfgned from any other CEA in its group by 15 inches (indicated position) or more, be fn HOT STANOBY within 6 hours6.944444e-5 days 0.00167 hours 9.920635e-6 weeks 2.283e-6 months .

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5URVEILLANCE RE UIREHENTS 4.1.3.1.1 The position of each full length CEP. shall be determined to be withfn 7.5 inches (indicated position! of al'. other CEAs in its group at least once per 12 nours except during time fntervals when the Oevfation Circuit and/or CEA Block Circuit are inoperable, then verify the individual CEA positions at least once per 4 hours4.62963e-5 days 0.00111 hours 6.613757e-6 weeks 1.522e-6 months .

4.1.3.1.2 Each full length CEA not fully inserted shall be determined to be OPERABI.E by inserting ft at least 7.5 fnches at least once per 31 days.

4.1.3.1.3 The CEA Block Circuit shall be demonstrated OPERABLE at least once per 31 days by a functional test which verifies that the circuit prevents any CEA from being mfsaligned from all other CEAs fn fts group by more than 7.5 inches (indicated position).

4.1.3.1.4 The CEA Block Cfrcuit shall be demonstrated OPERABLE. by a functional test which verifies that the circuit maintains the CEA group overlap and sequencing requirements of Specification 3.1.3.6 and that the cfrcuit prevents the regulating CEAs from being inserted beyond the Power

. Oependent Insertion Limit of Figure 3.1-2:

sa. Prior to each entry into HOOE 2 from HOOE 3. except that such verification need not be performed more often than once per 31 days, and

'. At least once per 6 months.

program for an entry into HOOE 2 from IIOOE 3 made fn association with a measurement of power defects ST. LUCIE - UNIT 1 3/4 1-22 Amendment No. JJ, 2O

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1.60 0 10 20 30 40 50 60 Time at Full Power to Realign CEA, Ninutes Figure 3.1-1a Allowable Time to Realign CEA vs. Initial FrT ST. LUCIE UNIT 1 3/4 1-23a

REACTIVITY CONTROl. SYSTEHS 3/4.1.2 BORATIOH SYSTEHS Continued The boron addition capability after the plant has been placed in HOOES 5 and 6 requires either 1660 gallons of 8% boric acid solution from the boric. acid tanks or 1630 gallons of 1720 ppm borated ~ater from the refueling water tank to makeup for contraction of the primary coolant that could occur 140'F.

if the temperature is Towered from BOO'F to 3/4.1.3 HOVABLE CONTROL ASSEMBLIES The specifications of this section ensure that (1) acceptable power distribution limits are maintained, (2) the minimum SHUTOOHN HARGIN is maintained, and (3) the potential effects of a CEA ejection accident are limited to acceptable levels.

The ACTION statements which permit limited variations from the basic requirements are accompanied by additional restrictions which ensure that the original criteria are met.

The ACTION statements applicable to an iamavable or untrippable CEA and to a large misalig~nt (> 15 inches) of two or more CEAs, require a prompt shutdown of the reactor since either of these conditions may be indicative of a possible loss of mechanica1 functional capability of the CEAs and in the event of a stuck or untriopable CEA, the loss of SHUTOOHN HARGIN.

crrviv For small misalignments (c 15 inches) of the CEAs, there is 1) a small

~mdacion- in the peaking factors relative to those assumed in generating LCOs and LSSS setpoints for ONBR and linear heat rate, 2) a small effect on the time dependent long term power distributions relative to those used in generating LCOs and LSSS setpoints for ONBR and linear heat rate, 3) a small effect on the available SHUTOOMN HARGIN, and 4) a small effect on the ejected CEA worth used in the safety analysis. Therefore, the ACTION statement associated <<1th the small misalignment of a CEA permits a onu hour time interva'I during which attempts may be made to restore the CEA to within its alignment requirements prior to initiating a reduction in THERHAL POMER. The one hour time limit is sufficient to (1) identify causes of a misaligned CEA. (2) take appropriate corrective action to realign the CEAs and (3) minimize the effects of xenon redistribution.

Overpower margin is provided to protect the core in the event of a large misalignment (>> IS inches) of a CEA. However, this misalignment would cause distortion of the core po~er distribution. TI~eector

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II Sr. I.UCIE - UNIT I B3/41 3

s REACTIVITY CONTROL SYSTEHS s ~

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~ a BASES 3 4 1.3 HOVABLE CONTROL ASSEMBLIES Continued ac ors an s(nc ar n coo an empe en The ACTION statements applicable 5nclude requirements to align to mfsalfgned or 5noperable CEAs the CEAs fn a given group with inoperable CEA. Conformance wfth OPERABLE these alignment requirements the core, wfthfn a short period of time, to a configuration bring the that assumed fn generating LCO and LSSS setpofnts.

consistent with operation with CEAs sfgntffcantly inserted However, extended perturbatfons fn 1) local burnup, 2) fn the core may lead to shutdown margin whfch are more peaking factors and 3) available exist fn the safety analyses and adverse than the conditions assumed to Therefore, t1me ltm5ts have been LCO and LSSS setpotnts determtnat1on.

CEAs to preclude such imposed on operat1on with inoperable adverse conditions from developing.

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Operability of the CEA position fs required to determfne indicators (Specfffcatfon the CEA alignment and CEA positions and thereby ensure 3.1.3.3) the rod block c1rcuft. The insertion 15mfts and ensures proper comp11ance wfth CEA "Full In" and "Full operat5on of an addft5onal independent means for date>mfnfng Out" limits prov1de the CEAs are at either their the CEA posfttons when Therefore, the ACTION statements fully tnserted or fully wfthdrawn posftfons.

indicators permit cont5nued appltcable to fnoperable CEA position inoperable position fndfcators operations, when the posftfons of CEAs w1th Out" limits. can be verfffed by the "Full In" or "Full CEA posftfons and requfred to be verfffed OPERABILITY of the CEA ore frequent verifications on a nominal bas1s of posit:fon 5ndfcators are once per 12 hours1.388889e-4 days 0.00333 hours 1.984127e-5 weeks 4.566e-6 months inoperable. These verfffcatfon required ff an automatic monitoring w1th channel fs that the applicable LCO's frequencies are adequate for assuring are satisfied.

The maxfmum CEA drop tfme permitted ssumed CEA drop tfme ent of 3.1 seconds used byfn Specification with Tave 515'F and with the safety analyses.

3.1.3.4 fs the nsures thai ihe measured all reactor coolant pumps operatfng Heasure-fmes experfenced during drop times will be representatfve of a reactor trip at operat1ng fnsertfon conditions..

ST. LUCIE - UNIT 1 8 3/4 1-4 Amendment No. ~

STATE OF FLORIDA COUNTY OF DADE J. W. Williams Jr. being first duly sworn, deposes and says:

That he is a Grou Vice President of Florida Power & Light Company, the Licensee herein; That he has executed the foregoing document; that the statements made in this document are true and correct to the best of his knowledge, information, and belief, and that he is authorized to execute the document on behalf of said Licensee.

J. W. Williams, Jr.

Subscribed and sworn to before me this

, 19/S.

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';,NOTARYPUBLIC, i nd for the County of Dade, State of Florida

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ML17216A255

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