ML19337B217
| ML19337B217 | |
| Person / Time | |
|---|---|
| Site: | Trojan File:Portland General Electric icon.png |
| Issue date: | 09/29/1980 |
| From: | Goodwin C PORTLAND GENERAL ELECTRIC CO. |
| To: | Eisenhut D Office of Nuclear Reactor Regulation |
| References | |
| RTR-NUREG-0578, RTR-NUREG-578 TAC-11715, TAC-30386, TAC-30687, TAC-30688, TAC-30691, NUDOCS 8010010559 | |
| Download: ML19337B217 (8) | |
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September 29, 1980 Trojan Nuclear Plant Docket 50-344 License NPF-1 Mr. Darrell G. Eisenhut, Director Division of Licensing Office of Nuclear Reactor Regulation U. S. Nuclear Regulatory Commission Washington, D. C.
20555
Dear Mr. Eisenhut:
Our previous letter to the NRC, dated January 2,1980 (C. Goodwin, Jr.
to H. Denton), provided our commitment to meet the January 1, 1981 implpmentation date for various TMI Lessons Learned items.
Furthe rmore,
PGE agreed to provide notice of delays in implementation due to material delivery problems. Attachment 1 provides a summary of the PGE commitments to the NRC on NUREG-0578 action items to be completed by January 1,1981.
Difficu,ty in meeting the January 1, 1981 date is anticipated for the the following items:
2.1.3.b - Vessel Water Level Indication 2.1.6.b - Plant Shielding and Environmental Qualification of Equipment 2.1.8.a - Post-Accident Sampling Capability 2.1.8.b - Increased Range of Radiation Monitors 2.1.9.b - Containment Water Level Indication 2.1.9.c - Reactor Vessel Head Vent All of these items require a plant shutdown to perform the installation
(
except for Item 2.1.8.a.
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$r.DarrellG.Eisenhut September 29, 1980 Page 2 4
The current status of implementation of each of the TMI Lessons Learned action items not yet completed, together with a description of the anticipated difficulties in attaining the January 1,1981 completion date, and the alternate means of performing that action to be utilized for interim operation are provided in Attachment 1.
A great deal of extra effort - in both man-hours and a higher premium has been expended to obtain the material, complete the design, and attempt to meet the January 1, 1981 deadline.
Your letter of September 5, 1980 provided additional clarification and preliminary schedule relief for many TMI Lessons Learned action items previously required to be implemented by January 1,1981. The September 5 letter granted relief from all of those potential problem items described in Attachment 1, with the exception of Item 2.1.9.b, Containment Water Level Indication. It is now expected that all of the action items in Attachment I will be completed in accordance with the revised cchedule, with the exception of Item 2.1.9.b.
Design and installation of a wide-range Containment water level monitor-ing system commenced in the fall of 1979 and continued during the spring refueling outage in 1980. The original system considered consisted of a bubbler-type monitor which required two Containment penetrations. Neces-sary adaptors for the Containment penetrations were not completed in time for installation during the 1980 refueling shutdown. A shutdown would be required between now and January 3.1981 for completion of this action item. Such a shutdown would last approximately 3 weeks - 2 weeks for j
completion of the work, 1/2 week for shutdown and cooldown, and 1/2 week for heatup and startup. Any shutdown between now and the spring of 1981 is likely to significantly increase oil and natural gas consumption in the Pacific Northwest for replacement power.
j Furthermore, evaluation of the bubbler design for the Containment water level monitoring system reveals that it does not meet all aspects of the criteria specified in Regulatory Guide 1.97, Revision 2 (Draft E).
There-fore, consideration is being given to an alternative design that utilizes differential pressure transmitters located inside Containment.
It is not possible to obtain qualified differential pressure transmitters prior to January 1, 1981. We are in the process of ordering these transmitters and have a promised date of April 1981 which we will attempt to improve.
A potential design utilizing Gem limit switches was also under considera-tion, but has been rejected because it was not clear that it could meet the requirements of Regulatory Guide 1.97.
PceJard General EecticCctrpeny
., p.
~
Nr. Darrell G. Eisenhut September 26, 1980 Page 3 We have made a concerted effort to meet the January 1,1981 date for all TMI Lessons Learned items. However, due to circumstances that could not be foreaeen and which are not under our control, we hereby request a delay in implementation of the Containment water level monitoring system until startup from our Cycle 4 refueling outage, currently scheduled for the spring of 1981.
In order to either plan or discontinue planning for a fall outage currently scheduled to commence on October 24, 1980, a decision on this matter would be appreciated as soon as possible but certainly no later than October 3,1980.
If additional discussion is necessary, please do not hestitate to contact us. provides some editorial and other miscellaneous comments on the September 5, 1980 letter for your consideration in a future revision.
Sincerely, l
Us
. J' C Goodwin, Jr.
Assistant Vice President Thermal Plant Operation and Maintenance CG/GAZ/KM/mg/4sh10A5 Attachment c:
br. Robert A. Clark, Chief Operating Reactors Branch No. 3 Division of Licensing U. S. Nuclear Regulatory Commission Mr. R. H. Engelken, Director U. S. Nuclear Regulatory Commission Region V Mr. Lynn Frank, Director State cf Oregon 3
Jepartment of Energy
4 e 5heet I of 4 e
ATTaounaf 4 TIKUAN WHCit AS pt ANT UIN/M SaeetARY OF pts CteestTMtuTS To Tess nec eMe stia&G-0175 ACTIosi lik818 Fue 1/4/3 8 n5v
.eC.e,et ree.e4 e
..t ic i,.t e. Di f,4c. i t ie.
m.s a.E. h.ig.
.ca.e,i.e (muers-0170. sec 16/10/79 Letters) pCE Cuesitores s ss et es of leplenest at ion for I/l/8 8 Ceepleties for Intesia operatione saference 8
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. Ie.i..siee
..r l.. e In.tr_.es. tie.
.,metalle.,re.e.se tap..e top. I.es.i t.t,
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for detettlee of leadequate eed bottoe pt RFV and provided cable, teenseitsere, and core cooling see be detected by teensli eew imet reestat ion sese cooliagi listed pee-pepseg to ar leatrumentattee.
BT8e will seteiro e fleet eeleting embceolies meeltese (e.g., vessel level indice-eib;. appseeches belos Ceedelt and cable pulling for sheade=e. Ceme t rac ties (8/8/40 itee), sese eelt thersee-tieel t o provide maaebigisema mader sowiew each as vessel traneelstere leside Centele-eetleesee a 2 week desaties seenples, lerere detectore, sed ledscat ion of leadeguate sore level indicat tee, incese
%et pera telly completed. Te for seesieleg sketaeve week.
eCF eeter surrest.
e ling.
leptement necessary detectose, essere detec-electratal and see mechselcal Sealified 8estee tseessit-procedures to be used with ters, RCP meter sosteet and Detailed Ceestruction Packages tese eet scheduled to ship i
the peepeeed epipeest.
cose esia thereau=ples.
(DCFa) have been issued to the
,metit leer 8901. Temporary field. One electrical DCP for magisellfied Staaseitters are saetallettee of leatrumentesten phyalcally testelled but met s
i to be seemed 9/8 5/80 operational. Delivery detes for several electrical g
imetreente set telpated to i
be af ter 4/8/0 6.
25iD b
3.I 6.e Betegrit y of Systeme Ndif y pipios ceanectione of
. The mechanical deelse les
. tiedificaties see be cow-li t.D.I. 4 Conseieing Radleactivity tWst eves fluw line and Aunil-lastellation of pipe fittinge, placed during
'est epose-levy Beildies fleer drain wolves, dsein asipe for pse-ties. We mejor pseblems 8Jessify potential pathe f ut linee to pseweet pot ent ial weetion of weesseitered Geseems set t a lpat ed, uscent selled selease est paths fer secostselled release auseide the Fleet to reJieac tivity and complete rolesse of radioactivity.
be issued to abe field by modi fic at ione.
9/15/80. hierial se be ordered le early September (estimated delivery less than 30 days).
. The mechselcal desage for the
. Itedificaties see be com-testallas tom of piples,. valves.
,3,g,a 4,g.,gg,g,,,,.
and beagers to prevent ventin6 ties. We mejor pro 6 teen of sedleactive see through
,,g,g,,,,4, vent lies for the RWST to be temeed the tiret week of September. The eetleated slee of earleal (ETA) for enterlat le 9/85/60.
- J.I.6.6 Plant Shielding and Eevison-
, Ceeduc t eJJitional shielJ-
. Design for installation of
. Edificatise can be see-Interie esopling pseceduse is 18.8.3 mental Quellficatlee of Eng emelysee le 8 3 esese velve seechree for WGST leseed pleted dering Fleet opere-siseedy la place for M2 seepting Egei, ament s identified la paeliminary de the field. All leeg lead ties. Ele me jor pueblema to sceply with usc segeisemente, review and complete audi-material eneite.
ent ic ipat ed.
Co., tete Fleet audif icas sess ficat ione, if any analy-le shieldies desige, apeset is's are l ater id**t i f ied f ***
leePe't i*e of ePare filtere le psuseduses and environment al stees of endi ficat ione, progrees to deterales il medi-
. If modificet tee seguised, see be completed dering qualifica&ies of eq=ipment ficatione segelred se that plaat eyes at ies. No major ident ified in the obieldies reeote headling of cont aal*
probleen anticipated.
design review.
eased filt ere 4e possible.
If modificetiene ese legasised, se less lead material required.
. Ceeplete modificatlee of
. Desige approach joes fiselised.
mechanical eaa pemente to CVCS and NUT teet piping will
, tereuting of CVCS ead NUT
. Hudifiset tee sepired to peseit eatisfy radiological envi-be rereased to minimise per-weet piping will seq =tre a sentlowe=e occupancy of sedeaste rennent al quell f ic at ion, seneel espesure. Addit tee of Fleet shutdeva, coeldown, sentret panel following letdown af ter addstlenet emelysie lead shielding else seguired.
and pestiel ds eielag of to CVCS NUT toebe. Although is cumpleted en valve pach-the BCS. Deelse see be saJoeste penal occupancy le die-ing, 0-riese, solenoid completed to suppera cussed in humEG-OS78, it la set valwee, gestete, etsi sub-felt shutdown, but duraties segelred for the safe shutdowe sequent analysis deter-of e gage af fected by per-of the Fleet. Until modifica-eined me audificat ive se tiet drain segeisweieete, ties le complete, letduwe cae ers ese ar y.
New weet end Jsein valves be directed to the Coat elsesent e.e y be requised may be er t empas ary shielding sneste
0 0
.he.t of.
p__9 ATTAQmehWT I TsMas mucitas plamT steenant of pta Ctwee4TMENTS 10 Tug maC Om gua8G-OSIS ACTION items Foe 4/8/81 (9/10/au) am)
..C
,.i s ee..t.
.et ic 4,.E.d.i f,6c.I t i.e
.i tes..t..e. ige s i.e, aen (spets-e%78. meC 66/10/79 Le t t es e l PCs Camelteens e St ates of Implementas se- _
for I/1/gl Ceeeleties for Interie operos ione
. Re ference less lead if valves cameos be installed aramed the peeel be found in opassa easite.
18 landme se the 5tff occurs af ter severe core damage.
wj
[ %'
b-
. Desige appseech is being
. ahetificaties can be ces-reviewed. Addiales of steel plated desing Fleet opere=
plate ehleiding for WGST tub-ties, se esjer prehtees
&cle segelsed. se long lead sat icipat ed, matesial segelsed. Civil deelte to be loomed to the field by 40/5.
. Desige for installet ten of
. Edificaties see be see-seechred for stb lete.nre plated deslag fleet opera-eelvea laaeed to the field, ties. Be major probleme All leeg lead esterial sat icipated, scheduled to etsive, by mid-Se pt eshe r.
. Upgsade enviroueestal goali-Replacement of cestela elec-
. If bydsogee sample panels
. Psesent qualificaslee of eles-ficet ten of applicable eles-trical compemente esteide Cee-coneet be quellfied to meet trical equipment la questsee le trical equipment reviewed sainment seguired. sees source tesa requiremente, eely a f aster of le lese thaa la IB 79-018.
epares free other SDCe avell-delivery of sev penete sattemely ceasesvaties stC able emelte. Qualificaties malibety befese 3/8/88.
erec ific atione.
of ealeties seapeneste slee Seplacemaet of a soleneid being perewed.
air valve for CVC8 eyetee cont aineemt isolation valve requires e Fleet aheadwe.
Four seleneid walves thes sheeld be la eleck osalte have set been located yet fl0 week lead time). Two liest evitches set la eseck have 6 week lead time.
. byJtegen sample pesete
. Ihadificatlee see be com-required to be relocated. Ne plated deslag operaties. We tems lead matestel psesently majes problema presently identified, anticipated. As design pre-gressee, maleressee problema esy develop.
. Ceamelteens pest ially completed l. 'Treasettlere erheduled go 3.8.7.h AFW Plow Indications Fsevide oefety gsede powes
. Flew indicates e les steen genesa-II.E.8.2 empply, flow lediasters and by feetallettee of Clase la eksp 40/11/8u. Power supply tore a and 8 are pawesed f ree AN flow ledicaciae to each t seseelt te re.
Power Supply se esietleg flow la wereheesel replacement dif fesent vital a-c bus thee steen generator shell entiety ledication. Tape for new felt se ETA. Cursent-to current etase generatera C and
- Sackup eefety grade requisemente, eefety gsade tresseittesa laelatere bee ao STA afW flow ledicaties (~ *
- lable Imatalled desing opsies e=tese.
(sestellesloe cae be by steam generator l<
- A Nechseicel med elec trical DCPe delayed). The temposary local AN flew ledices see.
few fell safety grade to be g
gge, geaggese, oched led issued to the field 9/15/80.
. ge e,,g, gfg5/so; replace-meet no ETA.
'T nh+st 3 e'l 4 LTTitJtrtNT 8 e
f a0JAe utsCA Eat yt. ANT e
guemaef 0F PCg CoretlTMLaTS TJ Tus stC 000 NUssC-0578 ACTlaII ITEns Fos 1/3/81 9/80/40) htC Bequiscoeste Anticipated Difficulties Alternate Design Action Plan (musrG-0US. mec 10/30/79 lettera)
PCE Comalteente
$tarme of leptementatlee for 1/3/81 Completion for laterie operatione Re f e re nc e 2.3.4.a Post - Ac c a dent Sampling Frevi e shielded sampling
. First DCp for interconnectieaa
. Modificaties ces be ces.
. The BBC-approved PGs interie see-II.S.)
Capabilitys f acility to obtain a pree-ead tie-las for emoples to be plated during Plant opsa-Pling methode and asses *sted pre-eusised sample of reactor leased by mid-geptember. Side ties. Delivery maJ cedures are in place at Trejaas shall beve a cerebility se couleet ligeld for ama'yees from vendere fee sample panels installettee of panele by the NGC gadiological Assesament g
promptly (48 br.) obtala SCS of radielsetopic coepeetties, due 9/4.
the sad e.f May 8988 le la Te es (S AT) has reviewed the samples aaJ e Caet aisuneet hydrogen and bores (and pee-queettee because esople lateria approach. The team sus-atmosphere
.eple.
Seaple albly chloride). A capabil-panel vender has not beea geste relatively miner equipment analysis cepobility abould ity to esople and analyse a selected.
and precedure changes.
C include determinaties of suble Centainment air sample will gases, iodines, cesi es, men-be included la the shielded
- O volatile isotopee. hyd,eu sampling f acility.
g
--. 3 and dissolved gases.
Q. i...b 5.c re.eed.. age.i.su.t ie.
. i.et.ig tue u -range
. u s,tricai desige
,.c coauit..
estesi.i sch.uied to interi. auw e gas radi.ti.e e.ei-u.,.I tera (local readent) c Munitosas (10-10 t/hs) Coatainneet and cable in Cont aineemt pas-arrive easite by mid-measuringupteIalegpableof eC&/cc area radiaties maaitore.
tielly installed during spring geptember. Eastellation of Preside high-rasse noble gae entage. glectrical design for two detectosa, cable, and are already in place se Ceedescer ef fluent eenitore for each Improved ledine measureeamt lastellatlee of BCOT drese ceanectora la Contalsseent Air Diecharge and Centaineset C>
release path, capability for will be covered in 2.5.8.c.
line meelter issued to the requires a float shutdows.
Forge systems. Amaillery Build-effluent euelsering of radio-fleId final design schedoled lastellation of cable and ing radiation eenitor le elseedy ledinee and hish-t ease Cee-
. Install bish-range redie*
te be leased 9/S (install rate-rateestere la control rose completed.
tainment area radiaties tien mealters for Auaill-esters, conduit, and cable out-alas requires a Plant shut-eneel t er a,
ary Building (up to side Cear.ieneet and detectose down. Coastsucties esti-
. Ng moeiter paael enj saeple 300 eCi/ce) and Condeneer lealde Ceetainment).
estes 8-week durattae for lane need te be retasated to Air Discharge and Contain-shetdown work.
reduce backgremed radiaties level oest Purse (up to
. Slectrical and mechaafcal at FAME I and 2.
(Concerne for I a 105 eCi/cc).
design for espanding sange of
. terouting of sample piping PsMe I and 2 high backgrounds may real I and FBM 6 la finalised.
and lestallaties' of rate-be seselved by leptementaties of Bereuties of some sample pip-meters le panel C41 la coa-Adelaistrative Orders for an seg to new detectora required.
trol rose require e Plant interie period.)
glectrical med mechaafcal shutdown. Back chaeale and design dependent en receiving connectors for ratemeters
. Alternate for high-rea.ge Con-design information free weedor any be available by shut-tainment A&Ma la use of new SERP (Victereen).*
deust - will permit wiring procedure to maaeure radiatien se C4 8 t o be* completed level outside Containment. Also, during shutdese. Prellei-sangeof10gelneemtARMahavea curseat Con eary drasi*ge are en head B/hr.
and ase being esat to Bechtal. Desige drawings (see Victereen espected by 9/26/80. uish probability that radiation detectore and ratemeters will act ersive until December 1980 or later
- 2. 8. 8.c Repsuved lediae Establish barbuy analysis Centlaue review of the
. He anticipated dif ficulties 18.r.1 Ins t rissent at ies:
capability for radialedine se...ity and necessary for meeting 1/1/81.
In oublie easeling f acility equipment.
Shall have a capability to equipped with Co-Li genea assusately evassere iodine spectreecepy systee, concent s at tees under accident condit iene at a low back-ground and low contamination area.
2.1.9.a Centeineemt Pressure lastell two Cent eiss-at Free-Bastellation of rest valvee
. Quallfled Reeeeuuat trane-
. Currently Trelaa has four selety-II.F.I laJic at iva:
suse traneelstere e.tle completed durlog spring
-ut-ettters scheduled for grade pressure traneeitters
( At t ach-esf et y graJe cable v and powes age.
Mechapical DCP * -
ehipment 10/14/80. garten measus ing containment pressure me at 4 3 provide cuat inieeue inJication eupplies for messe ing pree-installation of ing-tee linea transmitters available up to 75 peig.
et containment pressuse (up oure between -10 a.'
and pressure traneelttese and emelte for temporary instal-to three tiene design pues-190 peig.
electrical DCP for lastella-lattee. Transmittera can be sure) in ac cus dens e with tien of conduit, cable, changed out ulth Plant R.polesary Cui.te 1. 9 F.
s es s e de s e an l p.enel modi fis a-operating.
m_..
e Sheet 4 of 4 ATTACHMtNT 4 790JAN NUCl.I AR p!AeT
$UMMARY OF' FCE CtectifsetNTS TO TBE NGC 001 Muh8G-0578 ACT10el ITEM 6 Foa 1/l/88 (9/10/80)
P3$
Anticipated Dif ficulties Alternate Desi e Actles rise t
bac seguireseese (numer-usia. uhC 10/10/pt Lett ere) pc8 Coomitmento St atue of laplement at ion for 1/l/88 Completies for Interie operatione Re fe r enc e e2.1.9.b Cont ainment Water Level lastell bubbler-type level
. piping, pipe supporte and
. lastallaties of flued heade
. Esiating moesafety-related level II.F.I ledicatiums indicater mese. slog Cont ale-stillwell inside Containment (including teetleg), tie-lo evitches mounted is each of two (Attach-meet water level from bottom installed during spring out-to instrueest air header, Contalement aware has a water maat 5)
A contin owe indicaties of of auer to Elevation 53 ft.
age.
Electrical and mechsel-installation of flee evitch, measurement range of 4 8 f t. ele-C.es aiment water !evel shall (500,000 sal.). The erstem cal DCro for instrumentation, installettee of f.ses, power voties to 45 f t. elevetion; else be provided by a narraw-range will be safety grade and will wiring, piples, valves, air for selenoid values req =lsed alternate approach for Costele-imetrument (free bottom to be powered from vital cylinders, flow controller to be dose darles a Plant meet water level indication could sep of emp) sad a wide-sense lasts eet bee.
end pressere regulatese to shutdows. Coocret evitches consist of a water investery/
instrument (free bottom of be seemed to the field is are not schedeled to arrive water level correlaties graph.
Custainment to the height of September. DCP revision for metil 11/28/80. Se ve ral g
600.000 gal. of water).
Containment penetsetieas has other material itene that
. Coetsimment preneuse, temperature been leoned to the field.
can be installed d rles radiaties will be more indicative plant operaties either have of conditions inalde Costelament.
se ETA er ETAs la November and December.
Bastallation of raceways and Isatellaties of soleno,e
. should a necessity for the head II.B.I
- 82. 8.9.c seector veneet used vent s testall the remotely operated SPT heed west system which sable pullies inside Contain-valves requisse removal of went occur in e laterie period, psevide Seector Coolent system satisfies safety grade and meet for the reactor vessel miselle shield in Contale-P08Vs could / wide e backup and reacter vessel head high einste fallere criteries head went valves 95 percent meet.
lastelleties of capability fe, wenties, point vente remotely operated requirements with redwedent complete. lastelletsee of wolves, piping and pipe fsm control som.
Desige power espplies se feetation reacter heed vest piples par-supporte la Costelament of the system should be le v alve s.
tielly completed. Slectsical and control vising de acceedence with ID of E 50,46, deelge for outside Contalement pesel C16 in the control 50.44 and eatisf y safety grade loomed to the field. AdJi-room requires a Fleet r equis ement e, tiveal larger deelse to be shutdown. Constructica loomed in September. All estimates e 3 week dura-long lead material has been ties for the shutdown delivered eenaite.
work.
2.2.2.b Technical suppost the permanent TSC will be
. W computer system has been bec has reestablished deadline. An intesis TSC use established la Ill.A.B.2 Center (TSC):
Becated in the costrel room purchased and necessary engi-f or complet tee se 4/82.
the Ausiliary e.sedg g.
gege.c.
viewing gallery with neces-neering weske are la progress.
soon with come stcation linee Establish a peroament TSC sary habitability, communi-and closed-circuit TV from the with required space, comahai-cations and data transmiselos Stone & Webster was chosee as contaol rose, cetion fires, Fleet p'arameter capabilities (subsequent an A/E for eagleeerles and displays Fleet drawlege eeJ meetipt with the NBC leforma construction of sev TSC pr ecedur es, elly described W cosynter building.
ayates fos TSC and a new TSC building).
- Cuaylet ion of implement ation requis es plant shutdown condit los.
E M/MLAl/4 ee66.2 2814
ATTACHMENT 2 Comme:
on September 5,1980 NRC Letter Tc All Licensees of Operating Plants and Applicants for Operating Licenses and Holders of Construction Permits Providing Preliminary Clarification of TMI Action Plan Reauirements 1.
Item II.B.1, Reactor Coolant System Vents: With a new prelimi, nary implementation date of January 1, 1982, submittal of operating pro-cedures by July 1, 1981 is premature. Operating Procedures should not be required until October 1,1981 or November 1,1981.
2.
Item II.B.2, Plant Shielding Modifications:
This has been classified as a post-implementation review item by the NRC with a new preliminary implementation date of January 1, 1982. A submittal of material that is still required by June 30, 1981 is in conflict with the concept of post-implementation review. The June 30, 1981 date should be changed to January 1,1982.
3.
Item II.F.2, Reactor Pressure l'essel Level Indication: A similar schedule change to the above Item 2 should be made on this item. The new preliminary implementation schedule in the September 5,1980 let-ter requires completion of modifications by January 1, 1982 followed by a submittal of final design description by Jauuary 1,1981. Since this item is one of the post-implementation review items, the January 1,
,1981 submittal date should be changed.
1 GAZ/KM/4mg10A11
~
,,