IR 05000312/1990011

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Insp Rept 50-312/90-11 on 900527-0706.No Violations or Deviations Noted.Major Areas Inspected:Operational Safety Verification,Health Physics & Security Observations,Esf Sys Walkdown,Maint,Surveillance & Testing & QA
ML20058N652
Person / Time
Site: Rancho Seco
Issue date: 07/31/1990
From: Wong H
NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION V)
To:
Shared Package
ML20058N648 List:
References
50-312-90-11, NUDOCS 9008140321
Download: ML20058N652 (39)
v • d • e


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Vi: S. NUCLEAR REGULATORY COMMISSION'

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Report No:.50-312/90-11_

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Docket No.. 50-312

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'l License No. DPR-541 l

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Licensee:L Sacramento Municipal' Utility District j

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14440 Twin Cities Road--

Herald, California 95638-9799

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Facility N'ame:

Rancho Seco Nuclear Generating-Station i

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Inspection at
iHerald, California (Rancho Seco. Site)

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Inspection condu'cted:.May=27, 1990 through July 6,.-1990 and the Management Meeting-held'on July 11, 19901

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Inspector:

C. J. M ers, Resident Inspector Approved By:

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H 'Wong, Chiefv (/

Date Signed ReactorProjectsSectionII

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Summary:

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Inspection between May 27 and July 6,1990 and Meeting 'on' July:11, '1990

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Areas Inspected:

Thisroutineinspecti'$nbytheResidentIns the areas of operational safety verificationkhealth physics pectortinvolved

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and security.

observations, engineered safety features system walkdown, maintenance, surveillance and testing,-onsite followup of events,. quality assurance and a

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licensee meeting.- During this inspection, Inspection Procedures 71707, 71710,-

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61726, 62703, 35502, 93702,-94702 and 30703 were us'ed.!

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Results:

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General Conclusions:

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Significant progress was. observed in.thelimplementation of planned lay-up conditions for the reactor coolant system and the main feedwater system.'

An observed weakness in the area of housekeeping following. maintenance activities was identified.

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Summary of Violations or Deviations:

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No violations or deviations were noted.

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9008140321 900731 POR ADOCK 05000I412 O

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DETAILS

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PersonsC6ntacted

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' Licensee Personnel:

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  • D. Keuter, Assistant' GenerahManager -(AGM), Nuclear I

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LJ Shetler, Deputy AGM,. Nuclear Plant Manager

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  • P. Bender,1 Manager, Quality.and Assurance h

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  • P. Turner, Manager, Support Services c

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  • D. Brock', Manager, Nuclear Maintenance
  • W. !' Jody Manager, Technical-Services.
  • G. h azens,ki, Supervisor Nuclear' Licensing

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L*L. houghtby, Manager NuclearSecurity-

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  • M. Cua,ker,LManager, Nuclear Operations Nuclear Radiation Protection

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  • SiRede

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' Other licensee; employees contacted included technicians, operators,,

j mechanics;: security, and office personnel.:

  • Attended the Exit Meeting on July 6,L1990..

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~2. ', Operational Status of Rancho Seco

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During this inspection period the plant remained shutdown in a long term I

i defueled status period with all fuel assemblies; stored in the, spent fuel

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-pool.

Themajoractivityconsistedoflay-upmodification~s=for;theLmain

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steam system. -Preparations for.use of the energency diesel. generators as a

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peaking units were also underway.

The reactor' coolant; system was placed

in its long term full' wet laya p condition with a nitrogen bubble in the u

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pressurizer.

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On June 4, 1990,35 David: Freeman officially'took office astthe SMUD

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General Manager.

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On June 13, 1990, the licensee announced the elimination of approximately;

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100 positions at Rancho Seco.

These reductions will affect approximately

'60 permanent-SMUD personnel, 20 Security contractors and 20 other

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contractors,cand will take place over the next four months,gThe engineering department wasethe single area most af.fected by the cutbacks'

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of SMUD personnel. LAt this time, the-impact'of'the cutbacks in t

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engineering appear to be minimal and coincides'with completion of;the

engineeri.ng effort to prepare' system lay-up plans and system status--

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Jackages.

The other areas which have the most reductions are:. QA,

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-ladiation Protection,. Training, Chemistry, and Operations. ~.The Maintenance Department-was only slightly affected by'the reductions, with-a : loss of two positions.

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Operational Safety Verification (71707)

The inspector reviewed control room operations which included access control', staffing, -observation of system alignments,-procedural H

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adherence, and log keeping, Discussions-with the shift supervisors and-

owrators indicated;an awareness of. plant conditions, an' understanding by =

tiese personn:1-of the reasons for annunciator indications,. abnormal-

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plant conditic + and maintenance work in progress.

The inspector also.

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verified,'by obs.'vation;of valve and switch position indications : that a

systems were properly aligned as required by technical specifications for j

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the plant condition..

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reactor', and: turbine buildings, including Tours of _the auxiliary,de to. assess equipment conditions and plant-exterior areas, were ma conditions.

Also, the, tours were made to assess the effectiveness of.

radiological controls and adherence to. regulatory requirements.. The

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inspector also: observed: plant housekeeping and cleanliness, looked for potential fire and safety hazards, and observed security and safeguards;

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practices.

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During this-inspect' ion period, several isolated housekeeping

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discre ancies were identified by the inspector which were promptly

- resolv d by the licensee.

In particular, the inspector found an

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accumulation of scaffolding, hich appeared to have.been left followingladders an rooms on the -20.ft. level w previousmaintenanceactivIties.

The licensee indicated that the accumulations resulted when the responsible maintenance personnel had

been reassigned to priority work before completion of.the: area cleanup.

All materials not in use were promptly-removed and stored.

l During~ work; activities, it appeared that the health physics managers were conducting plant tours and monitoring work.in progress.: They appeared aware of significant work which occurred during this pr.riod.

The inspector's Radiation Work Permit (RWP) review revealsd that the RWP

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did include:: lob descriptir.., radiation levels, contamination, airborne

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radioactivity (if expectar respiratory. equi dosimetry,.:special equi..ent, RWPiexpiration,pment, p*otective clothing, Lheal'L physics,(HP)

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coverage,Jand signatures. 'The RWP radiation and contamination surveys

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were/kept current.

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'The inspector observed thal personn'el in the~ controlled areas <were-

wearing the' proper, dosimetry, personnel: exiting the controlled areas were

.using the monitors properly, and that employees. understood the RWP

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' requirements., Labeling,of.ontainers appeared appropriate.

The,inspectorwalkeddownportionsoftheprotected.andvitalarea-

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boundaries'to ensure that:they were' intact and that' security personnel j

Twere, properly posted where:known deficiencies existed.

The inspector

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also observed protected area' access control,~ personnel screening, badge issuing and maintenance on, access control equipment. Access control was

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Personnel entering with package's were properly searched andL access control was in accordance with licensee procedures.

The inspector observed no obstructions in the isolation zone which co'uld-conceal a person or interfere with the detection / assessment ~ system.

Protected area-illumination appeared adequate.

No violations or deviations were identified, t

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--ESF System Walkdown-(71710)

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During,the inspection period the inspector wilked down'the' spent fuel

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pool cooling system and the decay heat removal system aligned for= backup

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cooling for thel spent fuel pool, g

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All observed hangers and supports were properly made:up'and aligned.1

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HousekeepingLwas. adequate except'as noted in paragraph 3.

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No excessive packing leakage was observed on' valves.=

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~ Major system components were properly labeled, lubricated and' "

cooled.

No excessive leakage was' apparent.

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Instrumentation? appeared to be properly. installed.

No out of calibration gauges were'identifiedi

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Flow path components ~ appeared to be:in the correct position.

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Required support systemsEwere'available.

Proper" breaker and switch positions were verifiec.

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No violations or deviations were identified.

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15; Monthly Surveillance Observation-(61726)

Required ~surveillanceitests were observed and reviewed to ascebtain that i

they were' conducted;in accordance with1 requirements, f

. Portions of.,the-following' surveillance activities were observed:

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f spi 32A DecayHeat(Removal'SystemLoopASurveillance

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Nuclea/ServiceRawWaterSystemLoopASurveillance

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SP.34A Nuclear: Service Cooling Water Loop A Surveillancet

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,The fol.lowin Titems were considered during this review:

testing was in

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accordance/w th' adequate procedures; test instrumentation was calibrated; I

S limiting. conditions for-operation were met';tremoval and restoration of(

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p the affected components were accomplished;-test results conformed with TS-

>and procedure requirementstand'were reviewed by personnel other than the

L individual directing the test; the reactor operator, technician or-L engineerperformingkhetestrecordedthedataandthedatawasin L

agreement.with observations made by the inspector, and that any-l

~ deficiencies. identified during the_ testing were properly reviewed and E

' resolved by appropriate management personnel.

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E0TSGChemistryControl?

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The inspector reviewed the licensee's chemi..stry controlsLfor-the.

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-once-through-steam generators (OTSG).

The secondary side of both OTSGs i

have' been placed in.a full wet lay-up condition, including )ortions of the main steam p ping up to the turbine throttle' valves.

Tie inspector

'found..that the 1 censee had implemented a new' chemistry procedure.

c (CAP.14):to~ostablish the'long term system lay-up chemistrytrequirements.

The OTSG volume was recirculated for 6 hrs. prior-to sampling at least-

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once per week.

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m The(inspectorreviewedchemistrylogsbackto' January 1990Tandfoundfall

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valueszto be maintained within-limits. -The inspector noted several

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samples-with sodiump sulfate and specific activity levels trending high

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in the specified range; ' Licensee chemistry management identified that '

thetrendswereexpecteddue~to. initial-leachingfromtheinteriorpipef wall surfaces while= under the static flow' conditions."

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Theinspectorfoundthelicensee!schemistrycontrol[stobeadequate.

No' violation's or deviations'were'identifled, j

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MonthlyMaiNtenance-Observation (62703)

As of June l1 imaintenance' activities have been scheduled for the day shiftonlywith'littleor'nobackshiftmaintenanceactivities.

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backlog'of overdue-preventive maintenance work requests continues to'

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c declino and currently stands >at 52, which is< expected'to be worked'of_f by the end of August.

Corrective' maintenance (CM) work requests ~have declined to approx.imately 8661 total,-with'205 affecting operable systems, ~

231 on'availa le; systems,>and 430 on systems designated prudent-to-operate.

These work requests have: bean Operations

. ~ personnel and a priorityusystem established to give(reviewed.bhigher pr_or

. work:re' quests which have the greatest impact.on current plant operations..

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' Maintenance Activities

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Maintenance activities'for'the systems ~'and components listed below were i

L l observed and reviewed to ascertain that they were conducted in accordance

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with approved procedures,' reguletory guides, industry' codes or standards, fandtheTechnicalSpecificatica

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Lay-up modification of the emergency diesel generators-for use as peaking units.

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Troubleshooting of the "B" Bruce emergency. diesel generator output.

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Steam Generator chemistry sampling.

Thefollowingitemswereconsideredduringthisrehiew:

Theilimiting-

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conditions for operation wereLmet whil'e components or systems were i

removed from service; approvals were obtained. prior to initiating the work;; activities were accomplished using approved procedures ~and were

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, inspected as-applicable;_ functional-testing or; calibration was ' performed

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Lprior to returning components 'or systems.to service; activities were tac:omplished by qualified personnel;tradiological controls were

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implemented; and fire prevention controls:were implemented.-

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No violations or deviations were identified.

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Onsite' Followup of Events (93702)

During this inspection period, the licensee conducted testing of three of,

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=the emergency diesel generators.(EDG) as peaking units to-provide power-H

- te the utility grid during periods of high demand. The licensee completed a lay-up modification of the EDG' system to. disable-the '

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undervoltage (UV) auto starts of the two TDI EDGsiahd the "B" Bruce EDG, and to disable the auto closure of,the EDG output breakers. =No other l'

system modifications were~ required to facilitate the intended use.

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During subsequent maintenance runs to, verify the adequacy of operations-L

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L procedural c% nges, the output breaker for the "B" Bruce EDG failed to L

close when actuated from the control' room. The licensee initiated a l

Potential Deviation from Quality--(PDQ) to troubleshoot the breaker

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seal-in circuitry. )The breaker was subsequently. replaced with a qualified spare and demonstrated to perform properly..

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No violations or deviations were identified.

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Onsite Review Committee-(35502)-

The inspector attended the routine monthly meeting of'the Plant Review

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Committee (PRC) on June:28, 1990. The1 inspector found the PRC meeting to

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be adequately _ supported and effective in. review of planned activities-l related to the emergency generating system lay-up modification and I"

ongoing spent fuel pool ' leakage troubleshooting.

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No violations or deviatio'ns were identified.

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Management Meeting (94702)

r On July 11, 1990, after the end of the inspection period,-NRC_ management L

. met with the licensee to discuss =the overall status of the plant and the l

use of the emergency diesel generators as peaking _ units. The meeting was

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<, - conducted by the Regional: Administrator;and others ofLthe Region V staff l

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and an NRR representati_ve (see

Attachment:

1 - meeting attendance;11 sting).

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The meeting consisted of.a' licensee presentation followed by discussion

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L of the fo,11cwing ssubjects: organization / staffing,'p~lant status, use of l

EDGs' as peaking. units', pending submittals to the~ NRC, fuel disposition,

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'and' proposed site uses. AttachmentJ2 is a copy of the licensee handouts presented:at the meeting.i

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in response.to!NRC -questions' regarding planned : staff reductions,'the licensee stated that 'their plans fors staged destaffing would not be

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implemented until relief-has been received.from the NRC and that,. in the

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interim, adequate staff fo'r the plant in a defueled condition' would be maintained. NRC representatives emphasized that all license conditions and applicable regulations must be met until reliaf is approved by' NRR,

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SACRAMENTO MUlWCIPAL UTILITY DISTRICT

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RANCHO SECO NUCLEAR GENERATING. STATION l

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  • JULY 11,1990

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) DECOMMISSIONENG PIAN PIAN CURRENT LICENSFJ PIANT DEFUELED

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condition in accordance PERMANENTLY DEFUELED with Tech. Spec. evaluation

- Defueled Tech. Spec.

(POSSESSION ONLYLICENSE)

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  • Centralized Training

- POL License DECO $6MISSIONING

- Ultimate Dispos. Plan (Sub.7/90h 3;

- Centralized Trainingwith

- Permanently Defueled Tech

  • Current Security Plan OJTonly,except for
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-Implement SAFSTOR Operations

' - Permanently Defueled Emergency Plan

  • Reduced Security Posts

- Permanently Defueled Training Program

- Permanently Defueled Security Plan-Submitted 12/29/89-Submitted 4/30f)0

- Submit ~7/90 CURRENTSTAFFING PROJECTED STAFFING PROJECTED STAFFING PROJECTED STAFFING 374 Total

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~200 Total

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(6/1/90)

  • Implemented / Received

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new NUCLEAR ORGANIZATION - 7/1/90

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i GENERAL MANAGER

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AGM NUCLEAR

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. SAfEIY REVIEW Charles linkhart i

i COMMITIliE

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MANAGER MANAGER DEPtnYAGM i

NUCLEAR TECilNICALi._

NUCLEAR SUPPORT

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- NUCLEAR OUAtlTY

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NUCLEAR PIANT

& ASSURANCE Warren Peabody PaulTurner Joe Sheller Paul Bender

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- SECURITY

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- PtANT REVIEW COMMITTEE

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KEY PROJECTED STAFFING

  1. OF POSITIONS-i 7/1/90 1/1/91 7/1/92 AREAS-1/1/91

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, TECII SPECS PA-182 . OPERATOR TRAINING 12/28/89 MED PROGRAM' EXEMPTION - EMERGENCY PLAN 4/26/90 MED: . CIIANGE 4 .. , ' _ _... ... -. - + - - - - - - ' - - - + ~ - - - ~ SECURITY PLAN FOR 4/26/90 .MED LONG TERM DEFUELED CONDITION . EXEMPTION REQUEST EST.8/90 MED.

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PLAN FOR ULTIMATE DISPOSITION ! DESCRIBES " ULTIMATE DISPOSITION OF FACILIT " ~~- !

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PROPOSES DORMANCY UNTIL AT LEAST 1995 - c - ESTABLISI,IES DECOMMISSIONING COST -

MANAGEMENT REASSESSING PREVIOUS OPTIONS ! -

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RE-REVIEWING ALTERNATIVES-DECON - i SAFSTOR._ _ __ _ _ _. - - ENTOMB - - 2,

DEVELOPING SPECIFIC COST ESTIMATES FOR DECOMMISSIONING ALTERNATIVES .

FINAL ALTERNATIVE SELECTION BASED ON OCCUPATIONAL AND PUBLIC IIEALTII & SAFETY - LEAST IMPACT TO RATE-PAYERS - I .. _ _...... _........ . .... . - -... _.... - -... -..... .. - -. ..... ..... - -. . ... -

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REQUIRED MINIMUM FUNDING BASED ON 2772 MWt REACTOR SIZE - ESCALATED TO 1990 CONSTANT DOLLARS -

COST ESTIMATE EXPECTED TO BE FILED , WITH PROPOSED DECOMMISSIONING PLAN

FINANCIAL PLAN SIMULTANEOUSLY ADJUSTED WITH COST ESTIMATE ' I j . __ - --

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SUBMIT FINANCIAL STATEMENT TO NRC BY JULY 26,1990 L

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! DRAFTED - TRUSTEE SELECTED - BOARD APPROVAL REQUIRED - ! L q !

REQUEST FULL FUNDING EXEMPTION \\ . ! , -I ! , - i ' ! !

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WHEN . DECOMMISSIONING ALTERNATIVE IS - l APPROVED i i i ! , , !

ENVIRONMENTAL REPORT - i t BASED ON GENERIC GUIDANCE - - i l ADDRESSES SITE SPECIFIC DIFFERENCES - , , -

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RECEIVED 94 PROPOSALS ! ' !

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USE OF RANCHO SECO-PROPOSED

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SUMMARY OF REQUESTED ACTIONS . TO ACHIEVE THE TWIN GOALS OF SAFETY & ECONOMY, PROMPT PROCESSING IS NEEDED FOR:

POL PHASE SUBMITTALS POL LICENSE - PERMANENTLY DEFUELED TECIINICAL SPECIFICATIONS - PERMANENTLY DEFUELED EMERGENCY PLAN - PERMANENTLY DEFUELED TRAINING PROGRAM - PERMANENTLY DEFUELED SECURITY PLAN -

DECOMMISSIONING PLAN , _.

_. - - - . _.. . . .. - }}

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