ML20024B583

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Atomic Energy Clearing House, Vol 24,Number 2,dtd 780109
ML20024B583
Person / Time
Site: Crane  Constellation icon.png
Issue date: 01/09/1978
From:
CONGRESS (JOINT & ROTATING COMMITTEES, ETC.)
To:
References
TASK-03, TASK-3, TASK-GB B&W-4001, PR-780109, NUDOCS 8307090330
Download: ML20024B583 (4)
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Text

{{#Wiki_filter:* 4( /\\TOMIC ENERGY CLEARING HOUSE e b. ~ m . g#a7 .s p -v. -~ .w. zo., ^, T '.70NGRESSIONAL INFORMATION BUREAU. INC N *a* "',*',k.7^8 DAILY twtws senvece sseect too7 C01.0RADO B Ul1.D1 N G ,[ c c_.. n,_ 8 8** WAsninctoev. D. C. 20005 easta.cv. n, vol. 24 January 9.1978 No. 2f .........in T HIS WEEK 'S ISSUE.. '..l j, 13RC will hold public hearing on proposed clearance program for so:ne employees in coussercial nuclear industry..........Page 1 j.). f res. Carter and Shah of Iran agreed on nuclear safeguards . that util allow U.S. to sell 6 to 8 reactors to Iran. I Pres. agreed U.S. vill supply fuel and heavy water to Ind i= ' c Tat a pur rr. se to r................................... Pa g e 2 Secret file on possiMe (11ttit diversion of mates sel froin NUMEC does exi'.t," declassified NRC documents reveal.......Page 2, .a Atomic Sclety.od Licensing Appeal Board reversed Licensing ,y Board's detision that Midland nuclear plant license would not ca este situation inconsistent with antitrus t laws......Page ~ Strontiurn 90 and cesium-137 levels in teilk are due to nuclear weapons f allouc, not to nuclear plant releases. NU report..Page 11 Donestic cranium mill output increased shout 10 per cent over that of 1976, Bureau of Mines, Dept. of Interior......Page 16 NEC's reoort of Current Events for Power Reactors for the period September 10ctober 31, 19 7 7........................ Pa g e 17 l NRC has issued construction permit for Tyrone Enargy Park a m u onsin.............................................. rage 22 NRC Public Document Room - Ins pe c t ions................'............................... P a g e 2 3 t Lic e ns 1n3.................................................. Pa g e 2 8 8 ind us t ry a nnounc eme nt s..................................Pa ge 31 Recent Reporteble occurrence reports for November 1977 (contir.ued)....Page 12 i e........................................ TCR 50v2 E?IDYE!$ IN NRC ' JILL NO13 ?t'1LIC FIARING ON PROPOSED CLEARANCE TROOTA'd CO*dERCIAL NUCLEAR INDUSTRY. Proposed changes to ERC regulations upgrading its feguards program would apply to personnel who have access to or control over c irtain* quantities of special nuclear material (high enriched uranium, plutonium d uranium-233). or access to protected areas of facilities such as nuclear hSr. 33>4D a 42371) 7 p' war plants end fuel reprocessit. plants. DEFENDANT'S ,,,,,,, 1,,,,,,,,,,,,,, m 3,,,, 3,,,,, Q{-{\\8).e The Commission will specifically seek coc =nts of individuals and groups on 3 Sueh =*tt'r8

    • 8 U. S. DIST. COURT

. (1) The edvantases and disadvantages of alternative programs, such as psy-S. D. OF N. 'L cht logical testing administered by licensees under standards established by the Co ission, and alternative safeguards measures not involving investigat,fo,e or testing of licensee employees. (2) The extent to which the clearan:e pcc ram meets the performance requitec hhh s for protecting nuclear power reactors, patticularly seward eeeting the pos-men tuli.ted threat of Lnternal conspiracy. A (3) The desirability of applying the rule tc university research and train-r eser* ing reactors subject to Part 73 (physical protection of plants and materials) of b ..,,, m, NRC regulations. (4) Impact of the proposed clearance program on transportation of special.,,

n. clear material..

Persons who wish to p' resent oral or written statements on the proposed clear < ance program. announced by the ilRC last March, must submit their r.str.e :nd name of their organization, if any, to the Secretary of the Comission, k'ashington, D.C. 20555, by January 27,.,. r . '. 1,..

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6 6-6 6-8307090330 780109 PDR ADOCK 05000289 HOL P g .om = - - -

p g 1..".7 ~ 1 1 i. . ? * ". val. 24 - Ns 2 - b.:e.17 (1/9/78) }, s. to stocks, c1: haugh restric: tor.6 on the" enti:hnext el forriga urarium for (catstic I use vers partially lifted. All rsstrictions were to be lif:ed by 1983. l I During the s su 9-conth pericd, l'.3 tens of uranium cerapauods, including metals end alloys, valued et 32.9 millien and 382 cons of urar.tum concantiste valued at l 359.0 million vere, = ported. The value of exported special cu leer macerials, i principally enriched uranisme, for the first 10 months was $391 million. 1, i ! 6-6-6-6. $t NRC'S RIPORT OF CURRENT EVEbS FC1 POWER REAC1tAS FOR "h"T PERICD SEPT!w!!R 1-OCTOBE 1977, published December 1977, is presented below: 3 a *: 0?IRATQA ERROR g 03 Jaouary 11, 1977 whste the yor: Calheun Station Uni: I was opera:ing, water 't from the Refueling ester Storage Tank was pumped into the contai:c>ent through the contaicnent spray header due to an operator error. f i

  • During the perfornonce of a quarterly test of the safety i=jection and contain-i
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j ment spray pumps, the operator moticed sn increase 'in the containmer.: sump level I approzin.ately ten minutes after the Icv pressurs safety inje::fon pump had been I started. Appr x1=.a:ely 3300 gallons of water.had been pumped to tha contai= ment. About one minute later the ventils:fon isolatten actuation sigval vez received. At this cine the operator realized he had failed to follow the surveillance pro-sedures and had lef: the discharge valve of the low head safety injection pump open. j, Es inmediately secured the pump. .t The Reactor Ceolcat System was checked for leakage and contair. ment entry was e.sde approalmately one hour later. Inspiction revealed that a discharge from the cor.tainment spray nozzles had occurred. A few minutes later power raduction vaa i started. A second, contatunent entry was made about en hour later, af:er contai:enent j air samp1:s confirmed that a full face mask would prodde adequa:e respiratory pro-te tien for the levt! of radioactivity in the building. A detailed inspection revealed no serious deficiencies and no electrical grounds; tha power reduction j ves.termi=.ated at a power level of 837.. Although the operator had not followed the procedure and the discharge valve j was open, the contairs.ent spray header isolation valve (BCV-345) e.nd the low pressure ~ safety injection to :nntainment spray hsader cross-connect valve (ECV-335) should t have prev 3ctoil the event. 'the ele::ric/pneumati: converter en ECV-345 had failed ,k and both red and green, position indicatics lights were on, indica:ing the valve was partially cpen. Prior to the event the auxiliary Building Equipment Operator had j taken local control of the valve in an attenpt to completely r!ose the valve. After about 1/2 inch of stem travel, the operator removed ths valw pin and the valve 4 went back to its previous position as demanded by the valvs positioner. The third valve (ECV-335) in the incident had a leakass problen that had been previously identified but no corrective action had been taken. The pneumatic relay on valve KC7-345 was replaced and valve ECV-335 repaired $g Valve ECV-31.4 and RCV-345 sre now required to be placad in the tsst mode prior io-operating the low pressure safety injection pump or contain apray pump for tasting. j This mode along with verifiestion of an snmncistor vill ensure that both of thess l valves are in the fully clesed position prior to pump operation. VALVE HALTUNCT10.15 1. Primary System Depres.urisation On September 24, 1977. Ds'vis Besse Nuclear Fever Station Unit No.1 esperienced e depressurization unen a pressuriser powr relief valve falled to the open position. The Reac:or Coolant System (RCs) pressure was estveed from M55 pois to 875 psig in appros tnotely tvanty-one (21) airn:tes. At the beginning of this avant, stesa was

    • 5' being bypa66ad to the condenser and,the reactor thermal Peser vse at 263 MW, or 9.57..

Ele: tract:y vas not being. generated., The following syatemi ns!!unc::oned during th,* i transient: l a. Steam and Teedustey Rupturs Coa.rol Sy tem (3?RCS). -( b. Pressuriser Pilot Actuated Relief Valvi, c. No. 2 5:e&m Centrator Aus111 sty Teed hap Turbir.t Covernor. j e, __

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$.e ;rtwriter p:.es; :altti v 1ra vss stuck op:n. 31c.'res via this va lv: vas u.r; red br C*:I:sg 1F: bir.k vtivt, : Sus tst i=4 tic.g tha re actor vt s t el dspresseri-7 v 7CS ;suuta :::av. =d to ;.ar:.t1 ::.3 c:ald.v r. Of thz sys:en foli: sed.
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Iht res. n for th 4; art:.s htif trap" cf tha 58MS n.s.st yet been de:ct=i=ad. .v.* esive it.vt e:igt-ton :sva aled s n eral issse :et.c.ic :ce.s at ter:st:a15cstds, he A: r.:*.S ing f.:ech e tvs. Is-*+rigt:ics tits the !sth:s of :ha p..s s arissr rtle: *: tuned :.lisi vrive 3.vss h d h6t a ":1c.e." rtlay vu utsat:5 f ae:s the constal car: wit. nis missing

s!sy *.:uld r.o;.:sily ;r: vide t "2stl-in" circuit *.hith wenld hold the vtive open ir.'st ths ; ese.; d.c;;ed to 2205 rsis.
    • id. cut the relsy the p:-ar restaf valve above or helev 2255 Sy.: led :;sn med clerad tsch time the pressure of the F.CS sen p eig.1*.:s -spid sysli.s of the valva csuted t fr itua of the pilo: v41ve stern?

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.#. ' s.: and 311!n; to c!nna dwn to re:.ile:e thn ;;.v. its. This cau.e4 ~ the hydraulle sys ers on the valve to be driinad do en to a :.cint slet the valve would not s';.*rste. Inspt.ction of the regulatre rar:sted that a I tecting cerev on :he r.+.,vlator adjusting knob was tocse sad truld allev the j knob to vibrate to any position. With the regulator ie.;rs;erly set it g would not close down to re:ulete pressure and s onid allow the hydraulic 1 fluid to drain before the hydrantic operator could feinction. /. sistlar ,.. probica was discovered on evo other valves. althou;h 21 e aladjus: rent vas not suf ficient to prevent these valves fron 4;.erating. All the re:ulators were reset and the adjure *c.; h :*rs v.tre toched in piece so that they coeld not vibrate Icos:. Ti.e 'aatstien volves sere tas:sd satisfactorily foll,ceing these adjestrants. 4 3. Cff cas System Valves At the C; ster Craak &clast ;;*.aratt ; statica en Appt 27. IN7 ,e the resetor building ventilttion ryttahs itainted and the c:rt.dty gas tr:atrint s) stera (5075) a.ite.ec ically ini:1sted. s Ir.vst:tsstic[rtvaaled thst at apperst.stely if 5 h:.rs.a 5:stfon t ;15:ce ;t:farr. ins he.asekteping !u:tes in the -ain ::ctrel it.r5 4tridently cessed :he at::> eted off as GO ) mode switch te .r re fr:a "8.e:.!sta and t:;sse" to the "iss'ato" pest:fon. This resui:sd tr. the aff :ss val **e and the off ;ne drain valve gotr.g clased, and stri:e the.iCC vas r.ot in service the g:s flov sus !P; ped. ne isolstion of the react:r 1uilding vent'.1stion Q ayetts and inittorion of the 3:73 occurred at 1905. nn svo of f sr.s velves { vers :;tned four r.ing:es later and the SCTS cr.s secured. "".e ..e s c t o r Wildtr.3 ventilar ten systn was raturned to nor:a t at.400 hours. ~' .The off ses 4 rain valve did not seal pr:rerly and rea not leak tt ht. This condition all:ved the sarecus radierettvity within the 3 tscisted off ;as sys:ta piping to travel up :hres;h the est:k ru p in t*ne steck base snf fill the air space in the ventitetter. ti,nnel.

    • nsa the radiation level in the r: actor butidir::

ventilarter. duct reached a Irsel cf 17 mr/hr the r.or.! tors le ated next to this duct initieted the 3 TS. t The safety concern associated with this eve it is the ressittlity. -] of a sub er3eece d:se a person vould hrve re:Jivad fro 3 the !&dicic !ve ,asseus at=.osphere if they were in the tunnel area. The a:::t;here in j the t=n.el area it pro:ctsed throd5h the radvaste vantitatier, z;eten. '+1ch c::tatap both rt:.shtn; sad absolute fil:ers ;rier to whaustias thrcoth to the stack which to r.cnitored. The txte: : radistica lavel sensed in the tunnel was 26 tr/hr.. 1*o personnst tr;esuras or raleases to the evtir.n an: resulted free. thtt even:. The itsenses is tr.vesti:;atte: :he feasibilt:y of ins:allin an alarm to aler: r;arations personnel :: :ha cicture ~. /A of the of f gas valve Lt.en the ACC is out-of-service. y s e I i p .e .;a 1

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