ML20151Q838
| ML20151Q838 | |
| Person / Time | |
|---|---|
| Site: | Davis Besse  |
| Issue date: | 07/28/1988 |
| From: | TOLEDO EDISON CO. |
| To: | |
| Shared Package | |
| ML20151Q751 | List: |
| References | |
| NUDOCS 8808110304 | |
| Download: ML20151Q838 (8) | |
Text
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,DockktNo. 50-346
- L'icense No. NPF-3 Serial No. 1524 Pg. 1 INDEX LIMITING CONDITIONS FOR OPERATION AND SURVEILLANCE REQUIREMENTS SECTION PAGE 3/4.0 APPLICABILITY...........................................
3/4 0-1 3/4.1 REACTIVITY CONTROL SYSTEMS 3/4.1.1 B0RATIONCONTRbL Shutdown Margin......................................
3/4 1-1 Boron Dilution......................................
3/4 1-3 Moderator Temperature Co ef ficient....................
3/4 i-4 Minimum Temperature for Criticality..................
3/4 1-5 3/4.1.2 BORATION SYSTEMS F l o w P a t h s - S h u td o wn................................
3/4 1-6 Flow Paths - Operating................,...............
3/4.1-7 Ma keu p Pump - S hu tdown...............................
3/4 1-9 Makeup Pumps - Operating.............................
3/4 1-10 Decay Heat Removal Pump - Shutdown...................
3/4 1-11 Boric Acid Pumps-Shutdown...........................
3/4 1-12 l
Boric Acid Pumps - Operating.........................
3/4 1-13 Borated Wa ter Sou rces - Shu tdown.....................
3/4 1-14 Borated Water Sources - Operating....................
3/4 1-17 3/4.1.3 MOVABLE CONTROL ASSEMBLIES Group Height - Safety and Regulating Rod Groups......
3/4 1-19
+
ego Group Height - Axial Power Shaping Rod Group.........
3/4 1-21 Ncdf No Position Indicator Channels..........................
3/4 1-22 oo Rod Drop Time........................................
3/4 1-24 i
gg Sa fety Rod In sertion Limi t...........................
3/4 1-25 cUS Regulating Rod Insertion Limits......................
3/4 1-26
~
~q 5
Rod Program..........................................
3/4 1-30 ca mo:
Xenon Peactivity.....................................
3/4 1-33 maa Axial Powe r Shapi ng Rod Inse rtion Limitt..............
3/4 1-34
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DAVIS-BESSE, UNIT 1 III Amendment No. 38
'..Do ck t.'N o. 50-346 AD0ill0NAL CHANGi$ PRIvl005tY License No. NPF-3 pgggg3[g gy (( g g Serial No. 1524 I eiMNa h/Ne Om ?-N - F7 S
Pg. 2 APPLICABILITY SURVEILLANCE REQUIREMENTS 4.0.1 Surveillance Requirements shall be applicable during the OPER-ATIONAL MODES or other conditions specified for individual Limiting Conditions for Operation unless otherwise stated in an individual Sur-veillance Requireaent.
4.0.2 Each Surveillance Requirement shall be performed within the specified time interval with:
a.
A maximum allowable extension not to exceed 25% of the sur-veillance interval, and b.
A total maximum combined interval time for any 3 consecutive tests not to exceed 3.25 times the specified surveillance interval.
4.0.3 Failure to perform a Surveillance Requirement within the specified time interval shall constitute a failure to meet the OPERABILITY requirements for a Limit ing Condition for Operation. Exception to these requirements are stated in the individual Specifications.
Surveillance Requirements do not have to be performed on inoperable equipment.
4.0.4 Entry into an OPERATIONAL MODE or other specified appli'cability condition shall not be made unless the Surveillance Requirement (s) associated with the Limiting Condition for Operation have been performed within the stated surveillance interval or as otherwise specified.
4.0.5 Surveillance Requirements for inservice inspection and testing of ASME Code Class 1, 2 and 3 components shall be applicable as follows:
a.
During the time period:
1.
From issuance of the Facility Operating License to the start of f acility commercial operation, inservice testing of ASME Code Class 1, 2 and 3 pumps and valves shall be performed in accordance with Section XI of the ASME Boiler and Pressure Vessel Code 1974 Edition, and Addenda through Summer 1975, except where specific written relief has been granted by the Commission.
2.
Following start of f acility commercial operation, inservice inspection of ASME Code Class 1, 2 and 3 components and inservice testing of ASME Code Class 1, 2 and 3 pumps and valves shall be performed in accordance with Section XI of the ASME Boiler and Pressure Vessel Code and applicable Addenda as required by 10 CFR 50, Section 50.55a(g), except where specific written relief has been granted by the Commission pursuant to 10 CFR 50, Section M.55a(g)(6)(i).
l So b.
Surveillance intervals specified in Section XI of the ASME Boiler and Pressure Vessel Code and applicable Addenda for the inservice inspection and testing activities required.by the ASME Boiler and Pressure Vessel Code and applicable Addenda shall be applicable as follows in these Technical Specifications:
DAVIS-BESSE, UNIT 1 3/4 0-2 Amendment No. 71
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j D69.kst No. 50-346
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License No. NPF-3 4
Serial No. 1524 FORIEFORMATISK DU APPLICA8Ill1Y SURVEILLANCE REQUIREMENTS (Continued)
ASME Boiler and Pressure Vessel Code and applicable Required frequencies Addenda terminology for for performing inservice inservice inspection and inspection and testing testing criteria actitities Weekly At least once per 7 days Monthly At least once per 31 days Quarterly or every 3 months At least once per 92 days Semiannually or every 6 months At least once per 184 days l
Yearly or annually At least once per 366 days c.
The provisions of Specification 4.0.2 are applicable to the above required frequer.cies for performing inservice inspec-tien and testing activities, d.
Performance of the above inservice inspection and testing activities shall be in addition to other specified Surveillange Requirenants.
Nothing in the ASME Boiler and Pressure Vessel Code shall be e.
construed to supersede the requirements of any Technical Specification.
4 DAVIS-BESSE, UNIT 1 3/40-3
Docket No. 50-346 c
q; License No. NPF-3 l
w Serial No. 1526 FORINFORMATION ONIY APPLICABILITY BASES,
Under the tems of this specification, for example, during initial plant startup or following extended plant outages, the applicable surveillante-activities must be performed within the stated surveillance interval prior to placing or returning the system or equipment into OPERABLE status.
4.0.5 This specification ensures that inservice inspection of ASME Code Class 1, 2 and 3 components and inservice testing of ASME Code Class 1, 2 and 3 pumps and valves will be performed in accordance with a period-ically updated version of Section XI of the ASME Boiler and Pressure Vessel Code and Addenda as required by 10 CFR 50.55a.
Relief from any of the above requirements nas been provided in writing by the Connission and is not a part of these technical specifications.
This specification includes a clarification of the frequencies for performing the inservice inspection and testing activities required by Section XI of the ASME Boiler and Pressure Vessel Code and applicable Addenda.
This clarification is provided to ensure consistency in surveillance intervals throughout these Technical Specifications and to remove any ambiguities. relative to the frequencies for performin'g the required inservice inspection and testing activities.
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Under the tems of this specification, the more restrictive requirements of the Technical Sptcifications take precedence over the ASME Boiler and Pressure Yessel Cod 3 and applicable Addenda.
For example, the require-ments of Specification 4.0.4 to perform surveillance activities prior to entry into an OPERATIONAL MODE or other specified applicability condition takes precedence over the ASME Boiler and Pressure Vessel Code provision which allows pumps to be tested up to one week after return to normal operation and for example, the Technical Specification definition of OPERABLE does not grant a grace period before a device that is not capable of performing its specified functions is declared inoperable and takes precedence over the ASME Boiler and Pressure Vessel provision, which alluws a valve to be incapable of performing its specified function for up to 24 hours2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br /> before being declared inoperbble.
DAVIS-BESSE, UNIT 1 B 3/4 0-3
'* Docket No. 50-346 License No. NPF-3 Serial No. 1524 Pg. 5 REACTIVITY CONTROL SYSTEMS BORIC ACIO PUMP 3-SHUTDOWN LIMITING CONDITION FOR OPERATION 3.1.2.6 At least one boric acid pump shall ba OPERABLE and capable of being powered from an OPERABLE essential bus if only the flow path through the boric acid pump in Specification 3.1.2.la is OPERABLE.
APPLICABILITY: MODES 5 and 6.
ACTION:
With no boric acid pump OPERABLE as required to complete the flow path of Specification 3.1.2.la, suspend all operations involving CORE ALTERATIONS or positive reactivity changes until at least one boric acid pump is restored to OPERABLE status.
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SURVEILLANCE REQUIREMENTS one 4.1.2.6
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?.0 :, /t least+.h: ;b::: :;;ir;d boric acid pump shall be demonstrated OPERABLE at least once per 31 days by:
a.
Starting (unless already operating) the pump from the control room.
b.
Verifying that the pump develops at least 93% of the discharge pressure for the applicable flow rate as detennined from the manufacturer's Pump Perfonnance Curve at a discharge pressure
> 65 psig.
i c.
Verifying pump operation for at least 15 minutes.
d.
Verifying that the pump is aligned to receive electrical power from an OPERABLE essential bus.
i DAVIS-BESSE UNIT 1 3/4 1-12
Do$ket No. 50-346 License No. NPF-3 Serial No. 1524 Pg. 6 REACTIVITY CONTROL SYSTEMS BORIC ACID PUMPS - OPERATING LIMITING CONDITION FOR OPERATION 3.1.2.7 At least one boric acid pump in the boron injection flow path required by Specification 3.1.2.2a shall be OPERABLE and capable of being powered from an OPERABLE essential bus.
APPLICABILITY: MODES 1, 2. 3 and 4.
ACTION:
With no boric acid pump OPERABLE, restore at least one boric acid pump 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 be in at least HOT STANDBY and borated to a SHUTDOWN MARGIN equivalent to 1% ak/k at 200'F within the next 6 hours6.944444e-5 days <br />0.00167 hours <br />9.920635e-6 weeks <br />2.283e-6 months <br />; restore at least one boric acid pump to OPERABLE status within the next 7 days or be in COLD SHUTDOWN within the next 30 hours3.472222e-4 days <br />0.00833 hours <br />4.960317e-5 weeks <br />1.1415e-5 months <br />.
SURVEILLANCE REOUIREMENTS 4.1.2.7 ir :dditier t: th: C r;;ili x x ".:;;ic x xt: :f !;nt'!xtix
'.0.5, /t least one boric acid pump shall be demonstrated OPERABLE at.
least once per 31 days by:
1 a.
Starting (unless already operating) the pump from the control room.
b.
Verifying that the pump develops at least 93% of the discharge pressure for the applicable flow rate as detemined from the manufacturer's Pump Performance Curve at a discharge pressure
> 65 psig.
c.
Verifying pump operation for at least 15 minutes.
d.
Verifying that the pump is aligned to receive electrical power from an OPERABLE' essential bus.
1 DAVIS-BESSE, UNIT 1 3/4 1-13 l
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A00lfl0NAL CHANG [S PRIVl005Li ~
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})d(,]M JDQJ fllQ((]['{UjlJ if Docket 50-346 l,
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g 1license No.' NPF--3 PROPOS[D By L(H[R Serial No. 15/4
, Serid No. /5nc Date S-/f -ER FORIHORMION DU
'jRUCT!VITYCO:GO!.SYS'i_
I l l'3ASE3 j
l 3/4.1.1.4 MINIMUM TEMPERA""RE FOR CRITICALITI
!iThis specifica: ion ensures that :he r setor vill not be made cri:ical vi:h :ne treac:or coolant sys:em average te=perature less chan 525'F.
This limitation lis required to ensure (1) the =oderator temperature coefficient is within its analyzed temperature range, (2) the protective instrumentation is withis its Inormal operating range, (3) che pressurizer is capable of being in an OPERABLE l status with a stean bubble, and (4' the reactor pressure vessel is above its
,[sini=um RTimT ce=perature.
3/4.1.2.
20 RATION SYSTEMS Ihe boron injec:ica system ensures that negative reactivity control is avail '
abla during each = ode of f acility operation. The components required to per-form this function include (1) borated water sources, (2) makeup or DHR pumps, (3) separats flow paths, (4) boric acid pu=ps, (5) associated heat cracing sys:e=s, and (6) an emergency power supply from operable emergency busses.
With :he RCS avarage ec=pera:ure above 200'T, a minimum of two separate and redundant boron injection systems are provided to ensure single fune:1onal ilcapabili:y in the event an assumed failure renders one of the syste=s inop-lerable.
Allevable ou:-of-cervice periods ensure that =inor co=ponent repair
- or ccrree:ive action may be completed vi:heut undue risk to overall facili:y i ! sa:ety : rom injec:1on syste failures during the repair period.
I !i 'The boracion capabil.ity of either system is sufficient to provide a SHi.~00VN l y).30;S f rom all operating conditier. s' l.02 ak/k af:er xenon decay and cool-j
! down to 200*7.
The raximum boration capability requirement occurs from full j
f power equilibrium xenon condi: ions and requires the equivalent of either 7373 4
lgalicas of 8742 ppm borated water from che boric acid storage tanks or 52,726 l
'gallens of 1800 ppm borated water from che borated water storage tank.
ii l i*he require =ents f or a minimum contained volu=e of 482,778 gallons of borated l1' I l vater in :he borated water storage tank ensures the capaoility for borating l:heRCS:o:hedesiredlevel.
The specified quantity :f borated water is con-1
, sisten: 'i:h the ECCS requirements of Specification 3.5.4% cherefore, che i larger volu=e of borated water is specified.
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lWith the RCS te=perature below 200*F, one injection system is acceptable wich-single failure consideration on :he basis of the out I
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I, DAVIS-3 ESSE, UNIT 1
- 3/4 1-2 Amendment No, Ji',3%F,Ah,61 I
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TQ Q [DQ ". h)QQJQ[Q
.De k g yo. 50-346 ADDlil0NAL CHANG [S PRfVIOUSLY l 11, U bu$
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!N PROPOSED BY LETTER Serial No. /5/O Date 6-/P ff F:R MORE3 DNLY REACTIVITY CONTROL SYSTEMS BASES 1
.2 BORATION SYSTEMS (Continued) stable reactivity condition of the reactor and the additional restrictions prohibiting CORE ALTERATIONS and positive reactivity change in the event the single injection system becomes inoperable.
The boron capability required below 200*F is sufficient to provide a SHUT 00WN MARGIN of 1% ak/k af ter xenon decay and cooldown from 200'F l
to 140*F.
This condition requires either 8603 callons of 8742 ppn borated water from the boric acid storage system or 28,200 gallons of 1500 per borated water from the borated water storage tank.
The contained water volume limits include allowance for water not available because of discharge line location and other physical cnarac-teristics. The limits on contained water volume, and boron concentration ensure a pH value of between 7.0 and 11.0 of the solution recirculated within containment af ter a design basis accident. The pH band minimizes the evolution of iodine and minimizes the effect of chloride and caustic stress corrosion cracking on mechanical systems and components.
The OPERASILITY of one boron injection system during REFUELING ensures that this system is available for reactivity control while in MODE 6.
3 /4.1. 3 MOVASLE CONT'ROL ASSEMBLIES The specifications of this section (1) ensure that acceptable power distribution limits are maintained, (2) ensure that the minimum SHUTDOWN MARGIN is maintained, and (3) limit the potential effects of a rod ejection accident. OPERABILITY of the control rod position indicators is required to determine control rod positions and thereoy ensure compliance with the control rod alignment and insertion limits.
The ACTION statements which permit limited variations from the basic requirements are accompanied by additional restrictions which ensure that the original criteria are met.
For example, misalignment of a safety or regulating rod requires a restriction in THERMAL POWER. The reactivity worth of a misaligned rod is limited for the remainder of the fuel cycle l
to prevent exceeding the assumptions used in the safety analysis.,
The position of a rod declared inoperable due to misalignment should not be included in computing the averace group position for deternining the OPERASILITY of rods with lesser misalignments.
DAVIS-BESSE, UNIT 1 B 3/4 1-3'
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