ML19221A401

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Forwards Background Matl on NRC Actions Re B&W Reactors Since TMI Incident & Dk Davis Memo to Eg Case Re Task Group to Review Feedwater Transient in B&W Reactors
ML19221A401
Person / Time
Site: Crane 
Issue date: 05/22/1979
From: Eysymontt G
NRC COMMISSION (OCM)
To: Case E, Jennifer Davis
NRC OFFICE OF INSPECTION & ENFORCEMENT (IE), Office of Nuclear Reactor Regulation
References
NUDOCS 7905220445
Download: ML19221A401 (24)
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1 to ATTACEMENT 2 A e 4 e 162 012 9

. Office of Inspection and Enforcement Ac6<.,ns at ~ Babccck and Wilccx Designed Operating Plan:.s The following acticns and instructions have been placed in effect by the Office of Inspection an~d Enforcscent as of April 4, 1979: 1. The NRC Regional Offices provided copies of Preliminary Hetificati:ns to licensees with operating plants so that licensees would be aware of information concerning the accident. As subsequent Preliminary Notifications are issued, these are prcmptly transmitted. 2. Inspectors have been assigned to each site with operating ~ Babccck and Wilcox designed nuclear p:wsr plants. Resident . inspectors already had been assigned to two cf the five sites -- Arkansas Nuclear 1 and 0:enee 1, 2, and 3. F.cwever, the resident inspectcr cf Arkansas Nuclear 1 was being replaced because of pre etion and the inspector at 0:enee was assisting at the Three Mile Island ac:ident. Inspe= tors were dispatched by Monday, April 1,1979, so thet all five sites were provided with residsnt-type inspectica ceverage. 3. nE Bulletin 79-05 was issued. This bulletin was transmitted by telecopier fr:m the Regional Offices to fcur of the sites (for the fifth, transhission tmdble was experienced -- it was hand-carried to the licensee). Regional manag= cent and supervis: : discussed the Eulletin by telephone with licensee management. 162 013 - _ ~.

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4. A Temporary Instructica has been prepared cutlining the inspectors' duties at th.ese plants. The instructions place requirements en the inspector to perfem the~ duties specified in the Temporary Instruction and ass =e duties equivalent to assigned resident inspectors. 5. The inspectcrs are. required to assure that licensees are fulfilling the provisions of the NRC Bulletin at these plants. Inspectors also wil' assure that licensees are aware, insofar as practicable, of the details of the Three Mile Island accident. - 0 4 O e 4 4 162 014 ~ '. ,.d~M.S_* D T..1.';'.# ~'._5 *W

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-h D l' .11RC 15d'E5 BULLETIM Th t;uc1cer .egulatory Ccamissica today has issued an Of fice of Inspectica and Enforcenent Sulletin regarding the !!uclear Incident at the Three liile: I ;iand raector. This bulletin is being. sent to all utilities with e. Babccck and Wilcox prassurized water reacter, the suppliar of the Thraa I;ile. Island Unit 2 reactor. These utilities are being provided ear'ly inforaation and assessment of the incident and are being asked'to ircr.2-di.'tely review their ' facilities and procedures in light of the incid2nt to craclude a similar event. A Formal response to the.tiRC i.s.. required u within ten days. This sa a bulletin is being provided to all othar po'.er } rea-tor licensees and constructica pernit holders in the country for i n f:rc =.tica. In a related acticn, the iPC has dispatched an inspectcr to every licensed site with a Sabcock and Wilcox reactor. These inspectors still functica in a similar fashica to the resident reactor inspectors who a o being assigned on a regular basis to all cperating reactor sites around the country. They uill conduct inspections of all aspects of th faci!ity cperaticas in addition to the routine inspection progra' perforned by specialists in the MRC,s regiona. orrices. Tn.ey wi ll be recu...ang near the site and, Ork en a full-time basis at their assigned sites. h,-: 162 016 = --

7 i h.) S /,- V.'A'.Pi!.M ! U.1, O. C. 2MGS o g - :5.. v.. ~ g.. h.$-{.'J! April 1,1979 s.,. > 4 [... :0.y..wSM FC?.: B. H. Crier, Director, Region I J. P. O'Reilly, Director, Region II J. G. Keppler, Director, Region III K. V. Seyfrit, Director, Regior. IV R. H. Engelken, Director, Region V FF0:*: flormen C. Moseley, Director, Division of Reactor Operac..icas inspection, 0.1t SU3JICT: ~ IE BULLETIM 79-05, i!UCLEAR INCIDENT AT ThREE MILE ISLAND The s.ubject IE Bulletin shcub be dispatched for action by April 2, 1979, to all SEi.' po'cler react]r facilities with an operating license. Subject. bulletin and encicsures should also be dispatched for information to cll other pc.-er ea'ctor fccilities with an operating liunse and to ', g>ll po.:er reanter construction permit holders. The te;:t of the Bulletin, Enclosure 2 and draft letters to the licer.see are enclosed for this purpose. Enclcsure I which consists of the. referenced Prelir.inary Notifications, should be added 'cy the regional office. The letters to the licensee take the c =itcant to forward the cor.tinuing Preliminary Hotifications of the incident. These should be forwarded as thiy are received. /' / ./ . %.cc ! ~ /M l'o rman C. F.a s el ey, Di re--tc r Divisien of Reactor Operations Inspection O r... rice or,.nspection an, :.nicrcecea. u u

Enclosures:

1. Draft Transmittal Letters to B^'.' Licensees 2. Draf t Transmittal letter to all o ther power 162 017 fac-ilitics 3. IE Bulletin No. 79-03 , t.., to the f.ulletin ____,sw,____.-7 ww- %._. t 'a- ,Q u.-t, ;,,,,. I t,c. u...u.,...,,,,, a g. g DUPLICATE DOCUMi_NT c. .c..., i,.., _. _ t, o,..: v:: :p. Entire document previously entered into system under: $DD h f ':lu* y' -Q i t ]' hNO s ~~T N C %1. ~ WTMmWW._ry' No. of pages: 3 =m--

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!!UCLEAR REGULATC2Y m:-:4ISSIC:: 0FFICE OF IT;SPECTIC: Ai:0 Ei;FCRCE!4Ei!T WASHINGTCi!, D.C. 20555 April 1,1979 IE Bulletin ilo. 79-05 MUCLE/RII;CIDEi;TATTHREEMILEISLA?j0 Description of Circumstances: On March 28, 1979 the Three Mile Island' Nuclear Power Plant, Unit 2 er.p2rienced core damage which resulted frca a series of events which were initiated by a loss of fee 6.>ater. transient. Several aspects of the incident mcy have general applicability in addition try apparent generic applicability at operating Babcnck and Milcox reactors. This bulletin is provided to infora you of the nuclear in.-: dent and to request certain actions. .g.ctiens To Be Taken By Licensees (Althcuf, the specific causes have not been determir.ed for individual sequences in the Three Mile Island event, scme of the folic':ing may have contributed;) For all Babccck and Wilcox pressurized water react $r facilities with an cperating license: 1. Revieu the descriptica (Encicsure 1) of the initiating events and subsequent course cf the incident. Also review the evaltation by the MRC staff of a postulated severe-feedvater. transient related to Sakock and 'Jilcox c'd:s as described in Encicsure 2. These reviews shculd be directed at assessing the adecuacy of your reactor systems to safely sustain ccolda. n transients such as ~ these. 2. Review any transients of a si-.ilar nature which have cccurred at your facility and determine whether any significant caviaticas frca excected performance occurred. If any sicnificant deviations are found, provide the details and an cr.alysis of the sienificance and cny corrective cctions taken This n:terial my be identified by refercnce if previcusly submi" ~ ' "T - S y DUPLICATE DOCUMENT 3-es,,, ;. tde ac,C1ans req ir ',,Oy 2 n 2,.,,,. e n.. ine lum. .3 w! u u .3o Entire document previously entered L.-..ai .3. into system under: 04110337 !'/4 1 ANO v_' }1;*".C.u e! CG.4.k-An c. m%- _G ~ 71 No. of pages: I.)v .. c:J O "-""--=%--- -.. _ _,,,, _, _ _ _, _,,,,}}

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