ML20058N133

Forwards TS LCO 3.8.1, AC Sources-Operating, Incorporating Review Comments Discussed Between GE & NRC on 930930 in San Jose & New Condition to Address Inoperability of One Unit Auxiliary Transformer

ML20058N133
Person / Time
Site:	05200001
Issue date:	10/04/1993
From:	Fox J GENERAL ELECTRIC CO.
To:	Poslusny C Office of Nuclear Reactor Regulation
Shared Package
ML20058N136	List: ML20058N133 ML20058N138
References
NUDOCS 9310080072
Download: ML20058N133 (4)

Text

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October 4, 1993 Docket No.52-001 Chet Poslusny, Senior Project Manager Standardization Project Directorate Associate Directorate for Advanced Reactors and License Renewal Office of the Nuclear Reactor Regulation

Subject:

Submittal Supporting Accelerated ABWR Schedule - P&R Comment Incorporation on Technical Specification LC0 3.8.1, AC Sources-Operating

Dear Chet:

Enclosed find Technical Specification LC0 3.8.1, AC Sources-0perat',ng. This version incorporates review comments discussed between GE and NRC staff on 9/30/93 in San Jose.

We have added a new Condition to address the inoperability of one unit auxilary transformer, as discussed during the meeting in a telecon with Messrs. John Knox and Jim Lazevnick.

We have also enclosed a load list for the CVCF 120 VAC and the DC loads. We would like to arrange a conference call to discuss these loads and the effect of power loss and the appropriate A0Ts for the electrical technical specifications.

It is important to have A0T consistency between the electrical LCOs, the C&I LCOs, and the supported or actuated system A0Ts.

For the ABWR, great improvements have been made in the areas of redundant safety systems and instrumentation and controls for these systems.

Traditional A0Ts for the electrical system LCOs l'ased on a typical BWR/6 are not entirely applicable.

Please provide a copy of this transmittal to Mark Reinhart, Jim Lazevnick, and John Knox.

i Sincerely,

.o.,tk b /

Jack Fox Advanced Reactor Programs i

cc:

Alan Beard (GE), Norman Fletcher (D0E), Cal Tang (GE) i8k**"88& M88% R hasa PDR. lj

\\\\l 1

J

LOSS OF ONE DIVISIONAL 120 VAC CVCF (Typical of one of four divisions)

Loads Effect of Power Loss LCO LCO Condition Required Action Completion Time SSLC logic for RPS and Division logic trip for RPS 3.3.1.2 A. One or more Functions Place affected division in TLU logic 30 days MSIV isolation functions.

and MSIV isolation with one channel output bypass and restore channels.

resulting from loss of RPS/MSIV inoperable.

power.

Actuation Power to one of two One of two pilot solenoids N/A N/A N/A N/A redundant scram pilot de-energized (no control solenoids.

rod motion)

Power to one of two One of two pilot solenoids N/A N/A N/A N/A redundant MSIV pilot de-energized (no valve solenoids (inboard and motion).

outboard MSIVs).

Neutron Monitoring System Loss of divisional neutron 3.3.1.1 A.

One or more Functions Place affected channel in bypass at the 30 days monitoring; divisional trip with one channel NMS in 6 hours6.944444e-5 days <br />0.00167 hours <br />9.920635e-6 weeks <br />2.283e-6 months <br /> and restoro chanel.

signal to SSLC.

SSLC inoperable.

Sensor Instr.

Process Radiation Loss of divisional main 3.3.1.1 A. One or more Functions Place affected channelin Sensor 30 days Monitoring steam line radiation with one channel bypass at SSLC in 6 hours6.944444e-5 days <br />0.00167 hours <br />9.920635e-6 weeks <br />2.283e-6 months <br /> and restore monitor.

SSLC inoperable, chanel.

Sensor Instr.

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LOSS OF ONE DIVISIONAL 125 VDC (Div. I, il, Ill)

Loads Effect of Power Loss LCO LCO Condition Required Action Completion Time Divisional sensor logic in One division of SSLC Sensor 3.3.1.1 SSLC A.

One or more Functions with Place affected division in Sensor Bypass 30 days SSLC (except those for RPS logic in trip.

Sensor Instr.

one channel inoperable.

and restore channels.

and MSIV isolation which are AC supplied)

Essential Multiplex System Loss of one of four divisions of 3.3.3.1 A.

One or more EMS divisions Declare affected Functions and supported essential multiplexing.

inoperable.

Features inoperable in 4 hours4.62963e-5 days <br />0.00111 hours <br />6.613757e-6 weeks <br />1.522e-6 months <br />. (Affected Essential Functions and supported Features are Multiplex discussed below.)

System SSLC actuation logic for RHR, Loss of actuation logic for 3.3.1.4 ESF D.

Required action to restore Declare supported features inoperable in RCW, RSW, EPDS, D/G, AC, supported systems Actuation actuation capability and one hour and enter applicable LCOs for HVAC, and RCIC(Div.1 only).

completion time not met.

supported systems.

RHR Loss of actuation logic for 3.5.1 ECCS A.

One or two ECCS Restore subsystem (s) to operable status 14 days RHR subsystems inoperable.

RCIC Loss of actuation logic for 3.5.1 ECCS A.

One or two ECCS Restore subsystem (s) to operable status 14 days RCIC subsystems inoperable.

ADS solencids (one of two Loss of power to one of two N/A N/A N/A N/A solenoids) solenoids (ADS capability maintained)

LDS (isolation logic)

Loss of isolation actuation 3.3.1.4 ESF C.

One or more Functions with Restore actuation capability or actuate power.

Actuation one or more Output associated devices in one hour. If not met, Channels inoperable.

declare supported features inoperable.

RCW/RSW Loss of acutation logic for 3.7.1 B.

One of three RCW/RSW Declare supported features inoperable.

RCW/RSW divisions inoperable.

RHR containment spray Loss of cooling to one of two 3.6.2.4 A.

One containment spray Restore containment spray subsystem.

14 days containment spray systems, subsystem inoperable.

RHR suppression pool cooling Loss of cooling to one of three 3.6.2.3 A.

One RHR S/P cooling Restore RHR S/P cooling subsystem.

14 days mode.

suppression pool cooling subsystem inoperable.

loops.

SGTS (Div. II, Ill)

Loss of actuation logic for one 3.6.2.4 A.

One SGTS train inoperable.

Restore SGTS train to operable status.

7 days of two SGTS trains

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MITIA TION iISOLA TION OUTPUTS TO EMstACTUATORS TO EMS /ACTtJATORS MBREY!AT1DNS:

DTM = DIGIT AL TRtP MODelL E AC e ANOSPHERfC CONTROL NMS e NEUTRON MONf70 RING STSTEM NOTES:

EMS a ESSENTIAL MULYB"LElfNG SYSTEM DG e DIESEL GENERATOR PRRMe PROCESS RADIATION MONITORING 1, NMS AND PRRM (NOT SHOWM) ARE SLU = SAFETY SYSTEM LOGIC UNfT EPDS e ELECTRICAL POWER DISTRtRUTION SYSTEM RC1C e REACTOR CORE ISOL ATION COOLING STANDALONE SYSTEMS WTTH TL U = TRfP LOGIC UNIT ESF e ENGINEERED SAFETY FE ATURES RCW e RE ACTOR BUR DMG C1 OSED COOLING WA TER TRIP OUTPUTS TO RPS AND ESF HECW e HVAC EMERGENCY COOLNG WATER RHR e RESIDUAL HE AT REMOV AL CONTROLLERSOF SSLC.

HVAC e HEATNG. VENT 1LATING & AIR CONOfTIONING RPS e RE ACTOR PROTECTION SYSTEM LDS e LEAK DETECTION & ISOLATION SYSTEM RSW e RE ACTOR SERVICE W ATER

2. POWER 50URCEStPERDIYlSION)

MSiv e MAIN STE AM ISOLATION V ALVE SGTS. ST ANDBV G AS TRE ATWENT SYSTEM EMS.

CLASS tE,1?5 VDC NBS e NUCLE AR BOILER SYSTEM SPTM e SUPPRESSION POOL TEMPERATURE MONTTORING ESF tTSF 2 CLASS tE 12S VOC HPS%fSfV: CLASS 1 emme Ct Ass,E.120 V CVCF '

E, 90 v CvCr i

Figure 7A-3 Assignment of Interfacing Safety System Logic to SSLC Controllers