ML19248C995

Preliminary Annonated Sequence of Events,790329-0430 for TMI-2 Incident

ML19248C995
Person / Time
Site:	Crane
Issue date:	07/20/1979
From:	Metropolitan Edison Co
To:
Shared Package
ML19248C994	List: ML19248C993 ML19248C995
References
NUDOCS 7907270275
Download: ML19248C995 (9)

Text

.

FRE.2f!! TART A2,*'iCTATC SICCI'TCI CF E7I'CS VARCH 29, 1970

~~9.U AP R :', 30, '979

'his report pr:vides the sequence of events far :he period March 29 :h:: ugh April 20,1979 fallevi:g :he Mar:h 23, 1979 acciden: at 2:ee Mile Island Uni:

2.

Bis repc:: shculd still be censidered as preli=1:ary since investiga:1:n and da:a analysis is ongoing and con:inues :o provide new insights ista :he

':MI-2 accident. As such sev information and/0: understanding is developed this report vill be updated.

• he figures included in :his report represen: the cc pilatics of da:s f :s various installed inst:u=ents:1:n and rec:: ding scur:es. Se mais scur:as af infor=ation 1: this report 1:clude the follaving.

a.

Shif t Fore-mn's Leg b.

Cont::1 Race C$erator's Leg c.

Daily Plant Status Sheets d.

NRC ? al*~# ary Ta:ification Sheets a.

2abe:ck and 211c:: Lags A::ctations included a10 g with the ch:: clogy of events, in addition :c pr:viding periodic assessmen:s of :he plant sta:us, represes: inp u: culled fr:m Cenerai

?ublic C:111:7 10:e: rievs af the :pera:ing s:sff.

Se figures listed i: the *able af Centents and at: ached :o :his report presen:

da:a p10:s of varicus plan: parase:ers such as pressure, :a:pera:ure, and fiev curi:g :he 33 days : vered by :his sequence af even:s.

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?RI:.2MONA2T.L'INO"'ATID SIQt'ENCZ CF I'7E:CS MARCH 29, 19 79 3C A?RI' 30, 1979 (OAY 2 70 DAY 34)

TA3LZ CF CONTINTS DAY DATI PAGE 2

3/29/79 1

3 3/30/79 6

4 3/31/79 9

5 4/01/79 13 6

4/02/79 15 7

4/03/79 13 3

4/04/79 21 9

4/05/79 23 10 4/06/79 25 11 4/07/79 29 12 4/C8/79 30 13 4/09/79 32 14 4/10/79 34 15 4/11/79 36 15 4/12/79 38 17 4/13/79 40 13 4/14/79 42 19 4/15/79 44 20 4/16/79 46 21 4/17/79 48 22 4/18/79 50 23 4/19/79 52 24 4/20/79 54 25 4/21/79 56 26 4/02/79 58 27 4/23/79 60 23 4/04/79 62 29 4/25/79 64 30 4/26/79 66 31 4/27/79 68 32 4/28/79 71 33 4/29/79 73 34 4/30/79 75 guD fj, a D4

6/,.

.o, Rev. 0

.UT::CTATID 5ZQUE!;CZ CF ZYE::*5 (MARC'd 29, 19 79 ~~2RC A?l!!. 30, '979 CAT : T'IRC ;A7 Ja;

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1 OtT Uni: 2 Incore her:ccouple Raading 3-29-79 :hru a-3C-79 2

Od.: Uni: 2 Reac::: Coolan: Gas 2ubble 3-29-79 thru a- -79 3

• 211 Uni: 2 A Loop Temp-Hot 3-29-79 :hru a-3C-79 a

Ci! Uni: 2 A Ucp Te=p-Cold 3-29-79 :nru a-3C-79.

5 01: Uni: 2 3 Rop Te=p-Hot 3-09-79 :hru a-30-79 6

Si! Unit : 3 Loop Te=p-Cold 3-29-79.hru a-30-79 7

OtI Uni:

Reac:or Coolan: Pressure 3-29-79 :hru i-3C-79.

3 Of! Uni: : Pressurizer Level 3-29-79 chru 4-30-79 9

011 Uni:

Pressuriser Tenp 3-29-79 thru a-3C-79.

10 Oi! Uni:

L4:devu Tenp J-29-79 thru a-3C-79 11 Oi! Cult 2 Le:devn Flev 3-29-79 :hru 4-30-79 12 Oi! Uni: 2 Makaup Tank Lavel 3-29-79 :hru a-30-79 13 01 Uni:

.'d.akeup Tank Te=p 3-29-7 9 :hru a-3C-79 14 21: Cni: 2 S:eam Canara:ar A Pressure 3-29-79 :hru a-20-79, 15 2"

Uni: : 5:eas Genera:ce A '.evel 3-29-79 :hru --3C-79 16 Oi! Uni:

Steam Geners:ar 3 Pressure 3-29-79 :hru 4-3C-79 17 21 Uni:

5:aam Generator 3 Level 3-29-79 :hru e-3C-79.

13 Oi! Uni: 2 ~4as:e Cas 'ecay Tank A 3-29-79 :hru a-3C-79 19 O!! Oni: 0 'Jas:e ',as Oecay Tank 3 2-29-79 :hru a-3C-77.

20 21 7:i: : Reac::: 3uilding Te=p 3-29-79 :nru a-3C-79 21 O!! Oni: ; Reae::: 3uilding ?ressure 3-09-79 :hru e-3C-79 qo\\

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LOOP A

-*CCP 3 PRESSURI 1165 psig TE'JERN"URI *(20*)

NR *F NR *F T(CCLD) 243 ?

240 F

?RISSURIZER LE7EL 289 inches

ICCRI *".2.E22'CCCCPLES**

> 700 F AT E-08 (717E E!0RIST)

> 7C0 ?

A*

H-05

> 700 7 AT E-09 603 F AT E-07 602 ?

.C I-Il CPERA!ric PUv?S LA NCNE S Ixe CDIE3ATCRS L.:. m 373 inches 368 inches ST.CUS Steasing to the Isolated sais ecedenser REACTCR 2C!LDUIC D'?IRATURI 117 0 ?

?RISSURI

-0 2 psig HTDRCGET No: Sa= pled ACD'T!CNAL CC?C!**CNS 1

• he reac:cr was shutdcvs. A sen-condensible gas bubble exis:ed is :hs rese:a: vessel head but :his was so k:cvs by -he operators a: 00C0 bcurs. Oecay hes: vas being re=cved by ste1 + g 5:aam Genera::: A :s the

si: c: denser. Steas Genera:a 3 was iJoiatec and was suspected :s have a leac:c: ? colas: side :o Feecva:e side laak.

Se eac::: fuel -ladci ; hac been breached and radicac:ive za:arial had :een releasec :s :he Reac ::

3uilding :h:: ugh :he leac:::.sclan: 0:21: Tank -apt 2:e diaphrsg=.

Raci:-

ac:ive aterial had been ::ans 0::ad :s :he Auxiliarr 3u11:1g.

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• • Tirs: da:a was :c: :aken 20:11 :~0C.

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6/22/79 Rev. 0 3/29/79 Cay 2 2.

Radia:icu levels in :he Auxiliary and Fuel Handling 3u11 dings were nuch higher :han nor=al; at: borne radiose:17e nacerial was being released

(:h: ugh char cal fil:ers and absolute fil:ars) :o the envi::n=en: :hrough the sta i:n vent by the Aurt tiary 3u11 ding 7en:112:1:n Systa= exhaust.

3.

Se leac:or 3u11 ding was isola:ed except for essen:ial services.

4.

The leac:or Coolan: 1e:down fiev had been ics. This was believed :o be due to plugging of ei:her the le:devu coclers, the letdovu black orifices or the =akeup and purification de=inerali:e fil:ars.

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SI'?^ DART 07 VA.JCR IVOT*S CN D A7 2 1.

T: reduce tank pressure the Makeup Tank (MO-!-1) was ventud :hree :i:es (at 0435, 2045 and 2350) to the vaste gas vent header. The vent header nc:: ally discharges to :he Waste Cas Cecay Tanks (V0G-I-LA and 13) ; hevever, due :s leakage in :he systes se=e al bcree radioactive =aterial was released

s :he envirensent fr:m the Auxiliary Su11 ding ?en:11ation System (:h:: ugh absolute and charecal fil:ers[ via the s:ation vent.

When :he ventila:1cn sys tem is operating, the Anvillary Su11 ding a:sosphere is exhausted througn the station vent to the environ =en:.

Theref ore, any increase L: at:5c e ac:1vi:7 in the Auxiliar7 3u11 ding resui:ed is an increase in activity released to the environment via the station vent.

2.

!he Auxiliary Building and Fuel Eandling 3u11 ding 7e::11ation Sys:e=s were shutdcun s about C053 hours. Af:er securing :Se vent 112:1cn sys:e=, :2dia:1:n levels is :he Auxiliar7 3uildi:g and Tuel Hanc.

'*:g increased. A:

about 0:10 heurs high radia:1ca alar =s frec :he Con:.si Roem air in:2ke (H?R-200 ) and Centrol and Service 3u11 ding (E?R-224) :sdia:1cs =cci:::s were received. The Auxiliarr tnd Tuel Handling 3ui'. ding 7entila:ica Sys:e=s were re-started. This :ssui:ed La the cen:inued relasse af airberne radioac:1re

=aterial :o the t=vir:c:ent via the station vent.

The E?R-200 and RF1-22a

=cci:s: levels decraased f alleving res:ar: Of the ventila tien sys tems.

?srsonnel 1 the Ocut were required :s ves: respira:::s f:: appr:xi-

=ately cue hour (0:11 heu.4 0:13 hours).

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"a:e that was in 0:1: 2 Anr111ary 3u11d1=g tanks prio: to :he Luciden: vas

ansferred :: 0:1: 1.

In particular, :he f olleving L:ansf ers are :c:ed in

he icgbooks:

a.

The ent:en:s of Neu::alizer Tank 3 (WDL-T-63) were ::2:sferred :s Uni: 1 b.

~he centents of :he Auxiliary 3uiliing Se=p !ank (WDL-I-5) vere

ansferred to Neu::ali:e Tank 3 (WOL-T-63).

c.

The contents of Neu::alime: Tank A CaTL-T-3A) were ::ansferred to U21: 1 d.

~he cen:ents of the Nd '

• ar7 3uilding Su=p Tank (WDL-I-5) were

ansfer ed :s Neutralizar Tank A (WDL-I-6A).

The centants of the Auxiliary 3uilding Sc=p were pu= ped ts the e.

AnH1'la:7 3u11di g St._p Tank (WDL-T-5).

a.

A 100 s111111:e sa=ple of Reac:c: Coolant was ab:ained frem :he Rese::r Coolan: Syste 1e:devu line. This sa=ple was the first sa= pie :aken if:e:

he fuel had been breached. The radiatica levels of the sa=ple =easured grea:e :hau 1CC0 R/h: on cen:act (70 - SC R/h: at ene foot and 10 - 2C 1/h: a: three feet). Analysis of this leac::: Coolas: Sys:e= sa=ple was perfor=ed by 3e::is Labora:ory to de:er:1:e fuel status. They cencluded that sos cf :he volatiles i: the fuel vere released :s the Reac::: Occian:

vith an es:i=a:ed

s 12 per:en: of :he fuel reachi=g 2CCC7 ::.CCCF.

24 sed ni :his and :he a=cca: Of S:::n:ius, 34:1c= and Tranius presen: L: : e :colan:

they f el: *ha: little if any fuel cei: Occured.

3.

Engineers evalua:in; :he acciden-firs: h7 otnesized ::a: 2 ct-c :::ensib le h7d::?en bu:ble exis:sd in :he Reac::: ccian: 57sta=.

2ased :: 2cy;e's

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as Lav a f:::ula vas deve * ::ed 2: appr::::a:ely ;; C ":urs ::

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Rev. 0 3/29/79 Cay 2 the size of the gas space in the syste=.

This for=ula is stated bel:v and assumes no hydrogen solubility.

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= o g

'f dP-3 7

7o1Les of gas La Reac:o Coolas: Systa=, f:

=

?g Final Re.ctor Coola=: Sys te: ? essure sig

=

dP Change is React : Coolan: Syste: Pressure, psig

=

d7 Change 1: Rese:ot Coolas: System liquid vol==e, ::

=

• he ft:st esti=a:e of the bubble volt =e and subsequent volu=e esci=ates are plo::ed c: Figure 2 0.

6.

The ?:essurize: level :: ass =1tter (RC-1-LT2) failed. This was the ft:s:

Pressuriser level L:s::u=en: failure. The ?:essuri:e: level is sensed by three ::ans=1::ers, RC-1-LT1, RC-1-LTO and RC-1-LT3.

IC-1-LT2 previded signals to Icv 1:w level and high high level alar:s. Failure :f this ins t:t=en: a: :his ti=a did =c: affec: level cost:ci cr i= dica:10.

7.

The c::::alled release of slightly c:::2 inated industrial vaste water :s the Susquehanna River was :e ' a:ed at approx 1=a:ely 1300 hcurs as reques-

ed by NRC. *he NRC =ade :his request because sf Ocucer= expressed by Pennsylvania State Represen:atives.

3.

Reac::: Coolan: le:dev= discharge was shiftad bervee: :he Makeup !ank (MU-!-i; and Reactor Occian: 31eed Holdup Tanks 3 and C

(* OL-T-13, IC) :: assis: in 21:i=1:ing the pressure buildup in :he Maleep !ank.

?-

Ingineers := shli: s:arted reni:crt g the ::incs of :be ::::re Ther:c-

uples :: ensurs tha: : e Eeac::: Ocre was : cling i:wn.

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06/02/79 Rev. O

?txC CC3")IT'CNS DAT 3

TIME CCCO OA~I 0 /20/79 RIAC*CR CCOLANT STS*Ei ST S*Dd.

LCOP A LCCP 3 FRESSi!RI 1060 psig TEf?ERAZRI T(ECT)

NR* F NR* ?

T(CCLD) 275 ?

NR* F PRESSURIZZR

'.Z'F' 335 inches CICCRE *EERMCCCUPLIS

> 700 ?

.C E-08 (7IVE EIG*cIST) 613 ?

A*

-10 575 ?

AT E-09 555 ?

AT K-ll 458 F AT G-09 CPE2ATJ!G PL*MPS la NCNZ ST.'.AM GENERATCRS IC)D; v

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'E Q-NR* inches NR* inches 1

'(,b'f 9'

" - " Gund$ Le(

1 STACS Stea:ing to :he Isola:ed mal ecudenser RIAC*CR 3"!'OING

• IMPE3A*"RE NR* I

?RISLCRE NR* psig E!DRCGIN Not Sa= pled ACDITICNAI. CON 0!**CNS 1.

A scue.: densible gas bubble was believed :: be present in the reac ::

vessel head.

2.

""he React:: 3u11 ding base =ent was ficcded. ': vas believed :ha: : e va:er level was rising a: the ra:e of appr. h tely one inch per day.

2

.:cere ~her:cc:uple readings :f Reac::: Coolan: :e:pera:ure a: :ne cu:le: :f

.he ins: n=ented fuel asse:blies indi:a:ed poten:ial local :::e da: age ::

he center of :he : Ore.

?:ssibly : e f:ur:h :f :he :::21 :f ;7~ fue; 1sse:211es vere '.:~ra Lved.

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6/22/79 Rev. 0 3/30/79 Oay 3 SDCdARY OF EL*CR E7EN*S CCC"RR!NG CN OAY 3 1

To provide a pa:h for transferring the con:e :s of Easta Gas Oecay Tanks A and 3 (WDG-T-LA & 13) :o the Reactor Building a bypass line was ins:alled free the Waste Gas Decay Tank Discharge Header :o the Reactor Building via a line :hrough pene:ra:1on R-554C.

An atte=pe was the nade :o transfer gases cc :aining radioactive caterial frra the "asta Gas Oecay Tank (70G-T-13) :o the Reac:c: 3u11 ding. When valve WOG-7-3C3 vas opened to make this transf er,

he radiatica levels in the.Anttilary Building increased and :he valve was closed.

2.

Measure =en:s of Reactor Coolan: pressure, differential pre:sure and dif f er-ential volu=e were cade. This data was used :o =ake calculations of :he non-ccedensible gas bubble size. Between 0625 hours0.00723 days <br />0.174 hours <br />0.00103 weeks <br />2.378125e-4 months <br /> and 1307 heurs these measure =es:s and calculations were logged seve: :i=es.

• he average Of the seve: calcula:1cas logged was 752 cubic feet

• at a reference pressure of 375 psig.

3 To reduce Makeup Tank pressure, :he Makeup Tank (MC-:-1) was ven:ed f our 11:es (a: Clf0, 0320, 0710 and 0901) :o :he "aste Cas 7en: Header. :ue :o leakage i: :he yasta Gas Systes eac ven:ing resulted in :he release of air 5crue radioactive =aterial :o the Au:t111ar7 3uilding and subsequent releases :o :he envire==ent.

Thus 1: vas decided to ven: :he Makeup Tank centi:ucusly is order to =ain:ain a sligh: negative pressure. The 51 vccun

f the Makeup !ank a: 0901 heurs :o achieve :his resul:ed is a release

easurec a: : e s:a:i: vent :f ;200 R/hr.

• 3ased := an Irrer Analysis, :he uncertainty in this 7alue is projec:cd a:

n appr:xi=a:ely 20C : chi: fee:.

d gu (30

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6/22/79 Rev. 0 3/30/79 Oay 3 4.

At about 1215 hours0.0141 days <br />0.338 hours <br />0.00201 weeks <br />4.623075e-4 months <br />, permission was received f r:s Nuclear Regulatory Cec-sission to resume release of sligh:17 con aminated vaste va:er to :he Susquehanna River. This ac:1on was coordina:ed vi:h the office of :he Governor of ?ec=sylvania and a press release was =ade by state of ficials.

6.

A sa=ple of feedva:er frem 5:eam Generator 3 was obtained at 2045 hours0.0237 days <br />0.568 hours <br />0.00338 weeks <br />7.781225e-4 months <br />.

Radioche=1 cal analysis of this sa_ple indicated a s=all leak be:veen :he Reactor Coolan: System and the Feedva:er System.

6.

Appr7x1=ately 2100 gallons of va:er vere added :o the Makeup Tank (MU-T-1).

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C6/22/79 Rev. O otA.'C CCNDI!!CNS DAY a

3 COCO OATE 03/31/M REAC""CR CCCLAN'" STS'"Ed.

STS'"EM LCOP A LCCP 3

?RESSURE 1090 psig

• IMPERA T RI T(ECT) 230 F 230 F T(CCLD) 280 F 275 F PRESSURIZER L.~.7E' 200 inches CICCRE THE2MCCCU?!.ES 695 ?

AT E-08 (7 7E EIGEIS'")

587 F AT D-10 465 F A*

E-09 447 F A"'

K-ll 285 ?

AT G-09 CPERATING FUMPS LA NCNE S'"IAM ODTER.CCRS

LE7E2, 199 i=ches 253 inches S~.CCS Staa=ing :s :he 2solated

=ain ecudenser REAC*"CR 3U d' dig TSf? IRA % 2E NR* F

?RISSURI 1 1 psig ETORCCDI 17%

(Fa= pled at 0513)

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ADDITICNAI. CCNDIT!CNS

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Raac:ar Coolant Systes degasifica:ica was in p :gress.

2.

• he Makeup Tank (MC-I-1) was being continuously ven:ed :: :he Was:e Cas 7en: Eeader.

• he lever pressure i: :he Makeup Tank had resultad in a decrease in : e a=cun: :f radicac:fve =a:erial released.

• (Note-NE

' Toc leceived).

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C6/22/79 Rev. 0 03/31/79 Cay.

3 Steam Generator 3 re=ained isola:ed due :s :he radicactive :acerials in:re-duced into the Feedwater Systes during the Reactor Coola-- Systes to Feedwater Systes leak on March 23.

4.

O.e scu-cendensible gas bubble is still presen in :he reactor vessel head.

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...;~~S CCCt1RU'O CN O AY I.

1.

To degass the Reactor Coolan: System, the Pressurizer spray valve was periodically cycled and the Pressurizer was vented to the Reactor Coolan:

Drain Tank ('iDL-T-3). A: each ven:ing radioac:ive gasses were released

o the Reactor 3u11d1=g via the Reacec Coolant Drain Tank Rupture Diaphrag=

vhich had bursted.

2.

Calcula:1cus of the volu=e of acu-condensible gas in the Reae::: Coolant Systes were perf or ed cu=ercus ti=es during the day as degassing concinued.

~he calculated volume of ncn-c:ndensible gas was approx 1=ately 322 cubic feet

• at a reference pressure of 875 psia.

3 A Reac:3r 3u11 ding gas sa=ple was ob:ained on evo separate occasi:ns using i

the Reactor Building Air Sample Line :o HP-R-227.

The first sa=ple contained 1.7% hydrogen and :he second sa=ple contained 1 9% hydrogen. Analysis of

he first Reac:ar 3u11di=g gas sa=ple was perf or:ed by 3et:is 'aborator7 :o detersize fuel status. ~ hey cencluded that apprez1=ately 90 perce : cf the fuel rods were perf ora:ed vi:h abcut 30 perces: of fuel reacaing grea:e:

than 35CCF. Further, i: vas crueluded :ha: li::le, if any fuel rel: had occured.

a.

A radiation survey of :he Reac::: 3u1111:g Iculp=en: Ra::h indica:ed a dese ra:e f 'O R per hcur en cen:ac: vi:h :he cu: side :f the decr. Ocse ra:es

f 60 R per hcur n centac: v1:h :he 'Jas:s 04s Oecay Tanks ('4t G-!-1A, '3) were reasured.

• 3ased :n 1: Irror Analysis, the uncer:21:07 in this value is p:0 ec:ec 1:

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Rev. 0 03/31/79 Day 4 f.

Turbine 3ypass 7alves 2fA and 25A (MS-V fA and MS-725A) were repositicced fr e: 47% open to 44: ope :o increase Reactor Coolas: Syste= te=pera:ure slightly.

6.

lased a radicchemical analysis of the f eedva:er sa=ple taken fre= Stea=

Genera:or 3 a: 2045 hours0.0237 days <br />0.568 hours <br />0.00338 weeks <br />7.781225e-4 months <br /> en March 30, 3&W decided tha: Ster: Generator 3 could be used to re=cve decay hea:.

7.

The Hydregen Rece=biner was warned up on Refueling Su11 ding air bu: the decision was cade that additional lead shielding woulc be required f or crntitucus operation en :he Reactor Zuilding.

3.

Approx 1=ately 6330 galicus were added :o :he Makeup Tank (MC-I-1).

9 The 7:1: 2 Sora:ed Wa:er Storage Tank (OE-T-1) was being filled fr:: :he Ealliburten 3cric Acid Mix Tank (C4-T-1) cc= plex. Additional borated water was being transferred fr:= :he Uni: 1 3 crated Water Storage Tank to the Uni:

2 3cra:ed Wa:er Storage Tank asing Special Operating Frececure Nu=~ e: 79-13 c

(SC?79-13). The fiev pa:h was fr:= :he Oni:. Sora:ed Wa:er 5t:: age Tank :o the !ci: 1 Spen: Fuel Foci, : hen :: 7:1: 2 Spen: Fuel Starage Pool Surge Tank and then :o the Uni: 2 3cra:ed Wa:er Storage rank.

1C.

The c:nten:s of the Uni: 2 Conta=ina:ed 2:21: Tack A vere ::ansferrec :s the C:1 1 Miscellanccus Waste 5::: age !stk f:: pr: cessing.

ca t S DS h f I i, na. E, Ac..+36-en, g

us =

1;)

c y

v.

f,,

A s

I i

i t

C6/22/79 i

(

Rev. 0

.n_Ls. C~.C v_.mLe o

OAY 5

'2fI CCCO OATI C4/01/79 RIAC*CR CCCLAN* STS IM STS'*Di iCCP A

• CCP 3

??.IS SURI 1CCO psig

~IMPI2ACRI T(HCT) 230 ?

230 ?

T(COLD) 230 ?

277 ?

FRIESURIZIR L.'TEI.

130 inches CICCRI 'HIRMCCCU7LIS 496 ?

AT 0-10

(?!7I HIGHIST) 432 7 r"

G-11 430 ?

AI H-38 417 ?

X" I-39 417 ?

AT I-li CFIRATriG FOf?S 1A NCNI S*IAM GINZ2ATORS LI7IL 131 inches 379 inches 5""A C S Stea=ing :c the scla ed

=ain ec denser REAC"*CR 3U" D D'G N RA*"RI NR* ?

PRISSURI NR* psig HTORCCCI

.6 :

(sa= pled at 07C0)

AED '"~CNAL CC! CIT!CNS 1

Raac:cr Ccolan System degasifica:ic: was i= pr:gress.

2.

'he Makeup !ank (MU-T-1) was being ::::inucusly ven:ed :c :he 'a'asta Cas 7e::

Header.

"he icver pressure in the Makeup Tank had resui:ed in a decrease 1:

he radicactive raterial releases.

3 Se sc -cc=densib' e ' gas bubble was s:ill presen: in :he reae::: vesse; head.

Nc:e : NR - Nc: Racc ced; gn

. '. 1,0

[ l;.

~

v

.g

• u d w. d 3 d[g.

()O

C6/22/79 Rev. 0 04/01/79

,17 :

SDOd.ARY CF 'd.CCR I"ENTS CCC"RRn!G CN 2AY 5 1.

Calcula:icus of de volu=e of scu-condensible gas bubble in the Reactor Coolant Systen vere perfor:ed su=ercus :i=es during the day as degassing con:1:ued. Se average calcula:ed velu=e of non-cendensible gas was app;cxi-

=ately 524 cubi: feet

• at a reference pressure of 875 psia.

2.

The Reac:or 3uilding hyd: gen concentra:1cn was =easured eight :i=es fr:m 0700 hours0.0081 days <br />0.194 hours <br />0.00116 weeks <br />2.6635e-4 months <br /> to 2000 hours0.0231 days <br />0.556 hours <br />0.00331 weeks <br />7.61e-4 months <br /> to determine its :i=e dependent charar; e:13:1cs.

B e values obserred were relatively ccustan: a: 2 3 - 0 3% hyd: gen.

3 The Presiden: cf the United States teared C#.I Cai: 2.

4.

Work cen:1=ued en cennec:ing and shielding two Hyd:cgen Race =biners prio:

to placing thes in service. It was esti= aced tha: 1: veuld require about 24 hours2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br /> before dey vculd be is operation.

5 Approx 1: ate 17 7540 galicus of vata vere added to de Makeup Tank (MC-I-1).

5 Ef f s :s centinued on de ins:211a:10n and sealing of the hvpass line for discharging : e cen:en:s of the Waste Gas Decay *anks :o :he Reac::: 3uilding.

When :he discharge valve (WCG -3C3) f c= Was:e Oas Decay Tank 3 C4tG-7 '3) was :pened, a leak :: the Auxiliary 3uilding a:=csphere cccurred.

~his

esul:ed is a release of radicactivity :o de enviren=en:.

7.

he firs: atte=ct to inser: a ; e-installed =cvable incere de:ec::: C1-08) into te core was cade. During peri:ds vnen Oct in use, the de:ec::: was parked a: a pesi:1cn Of app::xt:a:aly 3 feet benea: :he :cre. Tsing :he sc a1 :: que the de:ec::: did ::t =cve f:: this ;csi:i:n.

• 3ased :n an I ::: Analysis, :he uncer:212:7 12 : is ralue is ;;: ee:ac a.

L))

appr:xima:aly 200 :ubic fee:.

g I

(, Q ' '

v o. n

,,- r< pn a r

,f3-,

^4 s>

w) j

. i,

A

--, b 2 $. b f

em

06/_2/79 Rev. 0 04/01/79 Da7 5 0*

2'e firs: feedya.g.- sa=p e f :a 3,,m a= era:or A yas obtained a - O hcurs.

b. d* cch.e:2ical analysis *og _-gis sa=ple revealed

~"I

~ #-

• • *13 Of e

radiccuc'* des presen:.

k

'*7.@.

w qs bs c,

c l

.a s.w !.

• x, eh Ov

,i

(,

)

v-k e

t

(.,'.,}, t J

06/22/79 Rev. O PLUC CCNDITICNS OAT 6

fDfE 0C10 OATE 04/0 M9 REACTCR CCCLuc STS De ST S""L'M LCCP A LCC? 3 FRIS SI.~AE 1C00 psig

""EMPE3Al"7RE T(ECT) 280 F 281 ?

T(COLD) 230 ?

275 ?

?RESSU21~El L:.s:

215 inches

iCORE *HE3MCCCL~r ES 479 F AT D-10 (FIVE HIGHEST) 432 7 A~

G-11 424 F AT E-Il 380 F A*

E-09 378 F AT E-08 C?E3ATING ? UMPS LA NCNE S*F.Af CETE2.ATCRS

'E IS7 inches 318 inches STA~'US Stea=1sg :: :he

sola:ed ain condenser REACTCR 3UI' DING

~D'JER.CTRE 90 0 ?

?RESSU3I

-1 2 psig HTORCGET 23%

(sa= pled a: 2000)

ADDITTCNAI. CCN0!TICNS 1.

React:: Cocian: Sys:en degasifica:1cu vas in pregress.

2.

~he nen-condensible gas Subble was still presen- * * -"e reac::: vessel head.

e r -

\\vj i,

jg f,J ' - -

k,,(

i t,.

A bOe b dikUOEh3 Ed i

A

' )\\

r-V t

IT m,.s,s

%(J a

4 s

C6/22/79 Rev. O C4/02/79 Oay 6 SMGT CF M_CCR E7Dr"S CCC"2 RING CN DAT 6 1.

Calculations of the volu=e of :he nen-condensible gas bubble in :he Reac:ar Coolant System were perfor=ed su=ercus times during the day as degassing continued.

~he average calculated volume of n n-condensible gas was app:cxi-

ately 202 cubic fee = at a reference pressure of 375 psia.

2.

":he Makeup *ank (E-T-1) was vented to the Radvaste Gas Ven: Eeader eleven ti=es by opening valve E-7-13

~he periodic closure of E-7-13 resul:ed in a slight posi:17e pressure in the Makeup Tank which was :ecessary in order to obtain a gas sa_ple.

3.

Apprcxi=ately 6550 gallens of water were added :o the Makeup Tank (E-T-i).

A s=all por:1cn ca=e f cm the 3eric Acid Mix Tank (CA-I-1) while the =aj ority of the added water came f cm the Reacts: Coolan: 31eed Holdup Tanks ('aT L-!-1A,

13, IC).

4.

One Hyd:cgen Rece=biner was put in cperacion and a f1:v ra:e of appr x1=a:ely 60 ef: vas established.

5.

• he Auxiliary 3 oiler was cut of service for app:cx1=a:ely two sinc es.

?

5.

A sa=cle was taken fr:m ~Jaste Gas Cecay Tank 3 ('TG-T-13) via the bvpass connected f t:m :he 'Jasta Gas Decay Tanks :: :he Reac::: 3u11 ding. No release :f radicac:ive gases :s the at=csphere was apparent.

• his sarole vas :: be ana17:ed f:: hyd: gen : uten: ;:10: :: venting :he ::n:an:s

f :he tank :: the leac::: 3uilding.

,, m ; *e' e 3 D i p00 t.3- ' "

3. { -

1 u, u; )

t 4

..1{2lg y a

.d"'

o

• 3ased :n an I ::: Analysis, -he uncertain:- in va.ue is pr::ec:ed 2:

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s

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(.) ).s

06/22/79 Rev. O

?LAN'" CCNDITICNS DAT 7

• 2fI CCCO DA*I 04/03/79 REACTCR COOLAN* SYSTIM SYSTIM

'.CCP A

' COP 3

?RESSURI 1000 psig

!*'M?I2AT"RI ~(ECT) 230 ?

230 ?

T(CCLD) 279 7 274 ?

?RESSU1:222 L'."T..~

195 inches DiCORE *EIRMCCCCPLIS 474 ?

r 0-10

(?!v3 EIGHIST) 433 ?

E G-11 419 ?

E E-11 367 ?

r E-09 361 ?

E K-ll CPE2 r rig PCM?S LA NCNE S IAM GETI2r CRS LI'T7*.

247 inches 347 inches S~r"S S:aaring :o the Lolated sais ecedense:

RIAC'"CR 3C*'_DI'iG

'IM? ERA ~rRI S8.0 ?

72ISSURE

-1.1 psig E'.O RCGET 1 9 * (Sampled at 21C0)

ADDIT!CN.U. COND!TIONS 1

Reac::r Coolant S? stem degasificaci: vas in pr:gress.

2.

~he Makaup !ank (MC-I-1) was being periodically ren:ed :: :he Radvasta Gas "es: Eeader.

~his alleved :he Makeup Tank :: =ain:ain a sligh: posi:1re pressure in :rder tha: a gas sample c:uld be :aken.

3

• he ne:<: densible gas bubble ia :he := actor ressel head had been re=cred excep: f:: siner gas pccka:s.tich vere f a '. : :: be ;:esen: in :he : ::::1

c drire rechanis s.

b F -] j f 'M g'M

c. ** l, s, q b.)

, nfy 3 gbhuhg

.g,. p

=

f

C6/22/79 Rev. 0 04/03/79 Day 7 4.

Plant Radiation Meni::: Readings:

EP-R-211 Fersensel Access Hatch; 4 M-/hr EP-R-214 (Corrected)* Oc=e Men 1:or; 350C0 R/hr EF-R-219 Pr1=ary 2123: 7en: Stack; (a) Particulate, 2 0 I 10 counts per minu:e (b )

Icdine, 2.3 I 10 coun:s per minute 0

(c)

CAS,

> 1.0 I 10 ceus:s per =inute 5

One Hyd:cgen Rece=biner was in cperation vi:h the secced uni: en standby.

" Note:

'ha dcme menitor is a shielded unit.

Data noted (corrected) :n :his page and subsequen: pages is corrected to give :he unshielded readings.

r&Y Y n *:, c ;cy

Q 4*

m pO.,B 6

..O k

g c.

b

(.,(JW

.)

ql%

}

khh C4/02/79 L'ay 7 SEM' ART CF MA.JCR IET*S OCC"R2:'!G CN DAY 7 1.

Calculaticas of :he sca-ccadensible gas volu=e in :he Reactor Coolant Sys:e=

vere perfor:ed nu=ercus :1=es during the day as degassing centinued. Se average calculated act-ccadensible gas volu=e was apprcx1:acely 37 cubic fee

• at a reference pressure of 375 psig.

2.

'Ja:e: vas added to the Makeup Tank (MU-T-1) fourtee :i=es during the day to give a total addition of app cx1:a:ely 53C0 gall::s of rater. Se

=ajority of the water ca=e f c= :he Reac:or Coola=: 31eed Holdup Tanks

('a'DL-T-LA, 13, IC); havever, Icg nota ms indicate sc=e va:er came f c= the 3c 1c Acid Mix Tank (CA-T-1).

3 A CO21 hours the Makeup Tank 7e : valve (MC-7-13) was shu: due :: increased

adiatica levels in the AtiM11ary 3u11 ding. Bis valve was : hen cpened a: C039 hours and closed at 0047 hours5.439815e-4 days <br />0.0131 hours <br />7.771164e-5 weeks <br />1.78835e-5 months <br /> with no apparent increase 1: radia:1:2 levels.

MU-7-13 was :he: cpened at 0100 hcurs and re=ained open for the rest of the day.

4.

Stea= G4: erat:r A vas isolated f c= the Mai: Turbine by cicsing isolation valves MS-7-4A and MS-7-7A.

Stes: 04: era:Or A level was inersased f:c=

124 inches at CCCO hcurs :: 259 inenes a: 2200 hcurs. Reac:Or Coolas: Systa=

ta=perature vas centrolled during :he day by adjusting the se:poin:s of :he Turbine 3 pass Con: ol 7alves (MS -2fA and MS-7-26A).

7 5.

Several Reac::r 3ullding air sa= les were take using E?-R-227 Se sa::les were taka: :: de:er=ine Reacts: Zu11 ding hyd:: gen centant.

6 essurizer *_evel !:ans=1::e (2C-i-LT') fai'ed a: 1 05 hcurs and was dee ergized.

2e 5cciu= Eycroxide !ank level was increased fr = 3C.f C f ee

~

-C.

f fee:.

sN r

V

' 3asac := an I ::: Analys u. :he unes :ainty in ::13 value is ::: ec:ec a:

ya Q(

a:p::xt:2:e;; ::C : : : f e v.

ew

C6/22/79 Rev. C PLANT CCNDIT!CNS OAY 3

""OdI 0000 DATI Ca/04/70 REACTCR CCCLA E SYS M STS M LCOP A LOOP 3 FRESSURI 1048 psig

• IMPERA*URE T(ECT) 231 ?

233 ?

T(OCLD) 230 ?

273 I

?RISSU2!:Il L

.7.'.

230 inches DiCCRE *HERMCCCU?LES 463 ?

E D-10

(?!7E HIGHEST) 438 ?

AT G-ll 406 F r

E-11 371 F r

E-08 360 F M

K-il CPE2ATING ?CM?S la NCNI STIAR CriE2ATCRS

' UEI, 362 inches 33e 12cc.es STAT"S Ste=+g :o the Isolated

=ain condenser RZACTCR 3UILDING IIMPERC~RI 38 0 ?

?RISSURI

-1 1 psig ETORCGDT 2.0 :

(sa=cled at 202C)

A2D!**CNAL CCNDITICNS 1.

Reac::r Coolas: Syste degasificati:n was in pr:gress.

2.

• he Makeup rank (MC- -1) was being ::::inucusly ves:ed :: the Radvas:e Gas 7en: Header.

• he icwer pressure in :he Makeup Tank had resul:ad in a decrease in :he radi: active _a:arial releases.

n r,

Y

, w b

O I

~

( vjgw:, f 3

G p: :I c; a 9+y, us Tw J

06/22/79 Fav. O C4/04/79 Day 8 SUM 3'ARY CF MA 'CR E77.';TS CCC"RRING CN JAY 3 1

~"he Pressurizer was vented eight ti=es during the day :o degas :he Reactor Coolant Sys:es. A typical venting was approxi=ately fif teen sinutes in duration.

2.

A Reactor Building gas sa=ple was obtained and contained approxima:a17 2 01%

hydro,en.

2 Cce Hydrogen Rece=biner was operated and t.n Il-day ti=e period was projected fsr cdue: ion of : e hyd: gen concen::a:1on from app cx1=ately 2*

o approxi-ma:ely 12.

4.

Acprovi--ately 2720 gallons of va:e: vera added :o the Makeup Tank ('.U-T-1).

5.

A 3eise pressure gauge was ins:alled :s provide an al:erna:o =e: hod of de:er-

=121:g Pressurizar level. Testing procedures were ::= der review.

. gw*. r, B s q

. '.] bgg, N s

. v s '\\

y)

)

gh h

! 6 12 C)

C6/22/79 Rev. O

?LA!C CC?C!*ICNS DAY 9

~2fI CCCO DATZ

% /05/79 RIACTOR CCCLA'C SYSTIM S*rS*Di LCCP A LOOP 3 FRISSURI 1C25 psig

• IMPE h = RI T(ECT) 286 F 2S9 F T(COLD) 286 ?

231 F PRESSURIZE 2 L.7E:.

220 inches O!CCRI *HERMCCCU?LIS 458 F AT 0-10 (FI7E HIGHIST) 444 F AT G-11 409 ?

AT E-11 376 F A*

H-08 360 F A*

I-il CPE2A!2;G PCM?S 1A NCNE S~IAM GETIEATORS LI7EL 240 inches 3C0 Luches STA CS Stea=1ng :s the Isolated

=ain ccedenser RZAC*CR EU D 0?G

• Di?I2A*URE S6.O F PRISSURI

-1.2 psig HTDRCGDI 2.C*

.CD!!!CNAL CCNDI*!CNS 1.

Plan Radiatic Mcult:r readings:

EF-R-211 Fersonnel Access Ha:ch; 3 7 MR/hr IP-R-214 (corrected) Occe Meni:or; 20,CCO 1/hr HP-R-219 Pr1=ar7 ?lanc 7en: Stack; (a) Particulate, 5.0 I 'O ccunts per ninu:e

(': ) : dine, 1 9 I 10~ ccus:s per sica:e t W.

(c) Gas,

..C I

.*C,.

r' #

ue:s per ninu:e

'\\

e p:,6gd p c

(:-

cy \\ _,

q h

i i

s 0 (o

==

it

06/02/79 Rev. 0 04/05/79 Oay 9 SI'MMARY CF EL'OR I'7EI'"5 CCC"CC'iG CM CAT 9 1.

":he ? essurizer was vented tvice, by opening and closing the ? essurizer 7en 7alve (RC-7-137).

2.

Water was addec :o the Makaup Tank (T -T-1) f:cm the Reac:or Ceclan: 31eed Holdup Tanks ('.71-T-1A,13, IC) and the 3cric Acid Mix Tank (CA-I-1). A total of 1360 galicus was added during the day.

3

?:essurimer level was c:ntrolled during :he day by opening and closing valve MC-7-13.

C.'U-7-13 controls Makeup water ficv f rom Makeup ?unp 3.)

4.

A::eupts were made to increase leedevn flev by cycling valve.W-7-23 5.

?:eparations for transferring the contents of Was:e Gas Oecay Tank 3

('aTG-T-13 ) :o the Reac:c: Su11 ding were in progress.

5.

A :ank ::uck vas cennec:ed :s the overficv of Cc densate Storage Ta=k (CC-T-13).

'"his :ank centained slightly ecst.'m.ated va:er.

.h OD 83.TQ

' UUh UidCM)jbl c.

Y m:

~~

t, La GJ

06/22/79 Rev. O

?LAN'" CONDIT CNS DAY 10

MZ CCCO OATI 04/06/79 RIACTCR CCOLAN"' STS"Te ST S"'Di

'. COP A LCOP 3 FRESSGE 1075 psig

• Hi?E2A"'URZ !(HCT) 296 7 239 F T(COLO) 295 F 233 7

?RESSURIZER LIVE.

242 inches INCCRI MMCCOU7LIS 450 ?

A*

0-10 (n 77. E!GHIS*)

439 ?

A*

G-11 407 ?

A*

E-11 373 ?

A*

E-08 259 ?

A*

K-Il CPERA*'NG FCMPS 1A NCNE 5EAM GUE2A*CRS L. %.

265 inches 207 inches S*ATUS Steami g :o :he Isolated nais condenser REAC"'CR 3CILDING

~2i?E2A!"R2 82.0 ?

?RISSURI

-1 2 psig ETORCGUT 2.0%

ADDIT:CNAL CONDI"'*CNS 1.

Condensa:e Tank (CO-T-13) level was 29.3 fee: and :he tank ::n:21:ed slightly cen:' d a:ed water. A tank : ruck was cennected :a :he :ack overf1cv vnien is loca:ed at the 31 fact level en :he :ank.

2 Se Pressurizer was being ven:ed to :he cen mment fc abcu: 15 ninu:es every shif :o further degas.he Reac::r Coclan: Sys:es.

{

'r 3pn gr i von 1 m.-

j y

n

( (( 3 d

m m.. o s t.

k

'n' 5,'4

[W 06/22/79 Rev. 0 04/06/79 Oa7 10 SI'M'_ARY OF EL'CR 27E*S CCCi'RRI"G CN DAY 10 1.

• he contents of Waste Gas ::ecay Tanks A and 3 ('4CG-T-1A and 13) were ::ans-ferred c the Reac:c: 3u11 ding.

""he tank pre.=sure was reduced f:cm approxi-

=ately 90 psig to 30 psig. *his was the first successful ::ansfer of the ccmtents of these :anks Oc the leae:c: 3uilding. Se ::ansfer was sc:

completed un:110205 hours en April 7.

2.

At 1315 hours0.0152 days <br />0.365 hours <br />0.00217 weeks <br />5.003575e-4 months <br />, Rea::or Coolanc ?u=p 1A (RC-P-1.A) ::1pped and withi :vo

=inutes Reactor Coolan: Pu=p 2A (RC-P-2A) was s tarted. A shift in the readings of the Secro S e:moccuples was observed (See Figure 1.0).

The three highest Ber=occuple readings (D-10, G-11 and I-11) decreased f:cm about 150 F, 439 ? and 107 ? :o 294 F, 315 ? and 238 F, respec:ively. Se largest increase cccurred on the core center *hermoccuple (E-3) which changed frem 375 I =c 455 F.

3 A release of industrial vaste vacer :s the Susquehanna River was started at 0310 hcurs.

• he calcula:ed concentra:1cn was abcut :ve-thirds :f the :azi=um permissable concentracion value f c: centi =ucus discharge of Icdine 131 fc: be:h uni:s.

• he discharge was stopped a: app;cv5:e17 0100 hours0.00116 days <br />0.0278 hours <br />1.653439e-4 weeks <br />3.805e-5 months <br /> f : ccliection and analysis of a sa=cle.

• his release was resu=ec a:

0513 hours0.00594 days <br />0.143 hours <br />8.482143e-4 weeks <br />1.951965e-4 months <br />.

a.

Abcut 0120 hcurs le:dev fi:v decreased I::a 19 3 gall:ns per 21:u:e :o 10 galicus per =inute.

2: unsuccessfull at:e:p: to increase f1:v :he valves i :he " etdevn Idnes were :7eled; :he: :he Reac::: Occian: pressure -as increasec :: '2C0 psig.

Se ~:: erred 14:e 01:sec Cooli:3 Wa:e: Iys:e=

r s

teste 2:ure was increased resul:ing in an increase :f le:de'm f;:v. A: !CC U

i 4 j\\

curs le:::vn f;:v was accu: 17 gall:ns pe: :inu:2.

.' c.

C6/22/79

?.ev. O C4/06/79 Jay 10 5.

Se :ank : uck cennec:ed to :he overflew of Ccndensate Storage Tank 3 (CO-T-13) was appecxi=ately half full.

6.

Apprezi=a:ely 950 gallons of water were added :o :he.'d.akeup Tank (MU-T-1).

7.

Se initial test of :he Heise pressure gauge for al:ernate Pressurize level indication was unsatisfactory.

D e i..

(de

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A m ?:0A0f f ~

• (j {., r..'

V{~dlGjjh[jh 1

~ ~ ' "

6

,d r

S f

(-JJ y

C6/20/79 Rev. C

?LAN"' CONDIT!CNS DAY 11

• 2 12 C000 DA'"I 04/07/79 RIAC""CR CCCIJ5" STS*IM SYSTri LCCP A

'.CCP 3

?RISSURI 980 psig

~IMPIRA'"URE T(20T) 236 ?

238 ?

T(COLD) 284 ?

380 ?

FRISSURI2ZR LI7~_.'

200 inches CICORI *2ERMCCCC?LIS 455 ?

A*

H-08

(?!7Z HICHIST) 377 ?

AT G-05 337 ?

A*

G-06 336 ?

A*

G-09 332 ?

AT M-09 CPIRAT2iG FUM?S h

NCNE S*IAM GI'iE3X"CRS

' :. s c 380 inches 362 inches S*rS Ste= ' g :o :he Is ola ted nain ecudenser REAC'"CR 3CCDUTG Di? IRA ~URI 81 5 ?

?RISSURI

-1 3 psig HTOROGZ:I 2*

ACD!TICNAL COND!**CNS 1.

• he cen:en:s of ~4asca Gas Cecay Tanks A and 3 (%~EG-!-1A, 13) were being discharged :s :he Reac:c: 3uilding.

2.

~he $cciu= Eyd: xide Storage Tank (OE-T-2) was placed :n recircula: ice.

)

b.. S,.;

Gsfty j.

2,!"),Dy f:f

o'

(

h au

.c J

O n, 3 8.

~, f ^; n n,

u1 v,

C6/22/79

[bh V,f.

• J $ e " / -

Rev. O C4/07/79 Oay 11 SDCdARY OF VA CR 'CnDr*S CCC"RRING CN 2AY ' 1 1.

Calculation of the non-ccudensible gas volu=e in the Reactor Cocian: Syste:

7ielded a censisten value of appr:x1= ate 17 0 cubic feet.

2.

• he transfer of the centents of Waste Gas Decay Tanks A and 3 ('aTG-T-1A, 13 ) :o the Reac::: 3u11 ding using Special Cperating Procedure Nu=ber 2-2 was ce=oleted. To11:ving ::=ple:1on of the transfer, pressures in Waste Gas Cecay Tanks 1 and 3 (WDG-T-1A, 13) were 32 psig and 30 psig, respec:ively, and the hydrogen gas ecucentration in the Reactor Building was approxi=a:ely 3

• he cen:ents of the.v.iscellaneous Wasta Holdup Tank (*aTL-T-2) were trans-ferred to Reac:or Coolan: 31eed Holdup Tank 3 (TDL-T-13) through *aTL-7-LC67 in accordance vi:h Special Cperating Procedure Nu=ber 2-<39

• he purpose of this transfer was :o =ake volume available f:: receiving the con:ents Of the b.21?tary 3uilding Su=p Tank.

• he 3oric Acid Mix Tank (CA-I-1) was filled fr:m :he Halleburten 3cric Acin a.

Mix Tank Sys:e=.

3.

Oegasificati:n of the Raactor Coolan: Syste= vas started by pressure reducti:n per Scecial Opera:ing ?recedure Number :-57.

• he pr ecedure called f::

redue:1on in Reactor Coolan pressure in 30 psig incre=en:s dcun :c appr xa-na:ely 5C0 psig. As par: Of :his precedure Reac::: Ocalan: ? =p 2A (RC :-3, vibrati:n and 00 clan: syste= noises were nenit: red ::n:inucusly.

.e:::xina:ely 3CC ga cus :f va:er were accec :: :ne Macaup !ack X-!.

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• Rev. O PLAh-" CONDITICNS DAT 12 T1".

0100 OATI Cl. /C 8 / 79 RIACTCR CCCLA';* STS'"IM ST S'"IM LCCP A

'CCP 3

?RES SL*RI 747 psig IIM?!.2X"CRI T(EC*)

235 F 235 ?

T(CCLD) 281 F 279 F PRESSL'RIZZR ' '.7H.

221 inches CiCCRE 1"dIRMCCOL"F ZS 442 ?

A*

E-08

(?!?I E 0 HIST) 370 F AT G-]5 347 ?

C H-05 331 i

.c M-J9 324 ?

A G-06 CPERA*ING PUMPS 2A NCNE S IAM GETIRATCRS L.:. < r 370 inches 350 inches STX"US S:eaning to the Isolated cain ::= dense:

REACTCR 3U"_DO!C

• IMPE3A ~25 31 5 F FRESSLII

-1 3 psig HYDRCGUI 19 (sa==le a: 022C)

.CDITICNAL CON 3!"~CNS 1.

Reac:cr Ceclan: Syste degasifica:10: by ;; essure reductics was is pr:gress in accordance with Special Operating 7::cedure Nu=ber 2-37.

2.

L4:devn fi:v vas being increased by raising le:J.cv: ::cler :e:perature and Spassing :he Makeup and ?urifica:ic Oa ' erali:ers is a :: dance vi:h S;.ecial Cpers:1 g ? :cedure :-75.

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C6/22/79 Rev. O C4/03/79 Cay 12 St?e'32T OF % OR I"Er"S CCC"RR:?!G CN SAT 12 1.

Acprox1=a:ely 1470 galicus of water was added :o Makeup Tank (MC-T-1).

2.

At about 1745 hcurs ma e=pty :ani truck vas connected to the Condensa:e Storage Tank (CC-I-LA).

The tani : uck vas to be used :s centain the va:er pt= ped fre= CO-T-LA because of the possibility of cent'

• ation with radio-active =aterial.

3 Using Special Operating Precedure 2-57, :he opera: ors centinued degassi=g the Reactor Coolan: System by levering Reactor Coola=: System pressure fr:m 747 psig :o 555 psig.

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C6/22/79 Rer. O

?!AS*" CONDITICNS DAY 13 23.E CCCO DA Z 01/09/79 REACTOR CCCLUT* STSTD' SYSTDt 100? A

'CCP 3 FRISSURE 555 psig TII".PERA~URI !(HCT) 280 F 234 ?

T(CCLD) 232 ?

220 F PRISSURIZIR *z.<:

198 inches INCCRE *H

CCCC7LIS 425 ?

E H-08 R

(FI7E H! CHEST) 364 ?

AT G-05 364 ?

A*

H-05 343 ?

A*

l'.49 32C F AT G-06 C? ERA!2iG IUMPS 2A NCNE

$~EAM G2iTRATCRS LZ7ZL 259 inchms 381 inches S*ATUS Stes d g to :he Isola:ed

=ais c:ndense.:

RZAC CR 3UT 3I'G TDfPERA*URE 79 0 F iRISSURE

-1 2 psig HYDRCGIN 1 85: (Sa_ple a: C 20)

ADDISCNAL C;tIDITIONS

'. 34ac:c: Cocian: Sys:am degasificarian by pressure redue:ica was in pr:gress is accc: dance with Special Cperati=g ?::cedure Nu=ber Z-57.

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C6/22/79 Rev. C 04/09/79 Oay 13 SUlylRY OF M.CCR 7"'Di*S CCC"?2 3G CN OA? 13 1

A 24-hcur peried of addi:icnal degasifica:ics by reducing Reac:cr Ceclan:

Sys:e= pressure to 400 psig in s=all decrenen:s was ecmple:ed.

2 Approxi=ataly 1490 gallens of water was added :o the Makeup !ank (MU-T-l).

3 Be second at: esp: to inser: a pre-installed novable incere detec:ce ('.4-38) in:o the care was nade. Ouring perieds when not in use, the detec:cr was parked at a positica of approxi= ate 17 8 fee: beneath the care. Using :he nax1=um :crque, the detec:ct was inserted abcu: one inch from :he parked position.

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C6/22/79 Rev. O

?LANT CCNC'TICNS OAY la 2

CCCO DA~I 04/10/79 REAC CR CCCI.Rl* STS~IM STSTEM LCCP A

'CCP 3 FRISSURI 839 psig TIMPIRrURE T(ECT) 230 ?

281 ?

T(CCLD) 230 ?

279 ?

FRISSUR;;IR LI E 120 inches DiCCRI THI2MCCCU?LIS 402 ?

AT E-08 (FI7I HIGHIST) 376 ?

AT H-05 353 ?

AT G-35 339 ?

AT M-09 316 ?

AT L-06 0? IRA

• dig PUMPS 2A SCNI S~T.AM GE!IRATCRS LI72L 350 inches

= inches S~A~~S Steaming to :he Isola:ed nais candenser RIAC'"CR 3CriG D'_? IRA!"RI 82 0 ?

FRESSURI

-0 9 psig HTORCGEI 1 7T ADDIT CNAL CCNDITICNS

~he:e vere sene of any significance.

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C6/ :/79 Rev. O C4/IC/79 Oay 14 SDa'AR? CF ML*CR E"IV"5 CCC"RR:NG CN 2AT Ii 1.

Oegasifica:1c= of :he Reactor Coolan: System by depressurizacic: using Special Cpers:ing Procedure Nu=ber -57 was centinued. Starting pressure was 750 psig. Reactor Coolas: Systes pressure was si:vly reduced :o approxima:e17 415 psig.

~he Reactor Coolan Sys:em pressure was then increased to approxi-

=a:ely 900 psig is order to re-establish le:dev: flev. Curing :he depressuri-

stion and repressuri:stic sequence no abncr=a'. conditions occurred.

2.

Reactor Building E=ergency Cooling River Wa:er ?u=p D (R.R-P-D) was secured due to overheated packing.

3

~he ec=:ents of Wasca Gas Cecay Tank A (',iDG-T-LA) were transferred to :he Reactor Building using Special Operating Frecedure Number

-2 4.

A 50 s1 Reactor Coolan: System le:dev sa=ple was collected and porticus of the s4=ple see: for analysis by 3e::is, 3abcock and Wilecx, Cak Ridge Na:ional Labora:ory and Sava==ah Ri rer Labora:ories. Oirect radia:1:n readings from the sa=ple centainer was 171 per hour a: 5 i= ch es.

5.

Acpr:21=ately 2500 gallens of water vere added :o the Makeup Tank (>ft'- -11 5.

• he ffnal a::e p: :o inser: a pre-1:s:alled =c rable i= core detec:cr :N-08) into :he core was =ade.

Duri=g period vne: Oct in us e, the detec:c vas parked at a posi:1:n of approx 1:ataly 3 feet benea:h :he core. !si:g the

azicu:2 torque and a 1:/ cut al:ernating :o:10: :he de: actor was inserted 1.

fae: fr = :he parked posi:1:= (i.e. approx 1:a:ely 3 fee: into :he bo:::s :f s' Q r >

t-.-

he cere) en:11 1: beca=e s::ck.

"he :etec::: vas.ri:hdrava anc : hen g

La IsJ inserted again bu: beca e s::ck 2: 7 67 f ee: vnere i: vas lef:.

J "he Heise pressure gauge f:: 21:n na:e ?ressurizer le rel inci:A.A:

0 Mas 3

P

%nd 0 1i again tested......osa:isiact:"" resui:3

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C6/22/79 Rev. O

? LUC CC?C!T!CNS CAT 15 TOfE CCCO OA*E 04/11/79 12AC*CR CCCLA?C STS*Ei STS""EM LCCP A 100? 3 PRISSi;RI 931 psig

• i2f? ERA ~JRE !(HC*)

235 F 288 F T(COLD) 235 ?

233 F

?RISSURIZI2 L s 136 inches INCORE ~352MCCCC7LIS 401 ?

.C H-08

(?!'/I HIGHIST) 334 F AT H-05 355 F AT G-05 343 ?

AT M-09 321 F AT L-36 CPF.Lt!!NG FCMPS 2A NCNE STIAM GDITIATORS LZ7E.

350 inches 353 inches S*ES Steaming :s the Isolated

=ain c = dense:

-RJACTCR 3CI'3ING

• ZMPE22*"12 90 0 ?

FRESSURI

-0 6 psig HTDROGET 13: (Sa= pled at 0030)

.CDITICNAL CC?OITICNS 1.

Pressurimer L4 vel Trs:smi::er (2C-i-LTC) was periodically failing.

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C6/02/79 Rev. O C4/11/79

!ay 13 SD03ARY CF MAJCR TTCCS CCCFRU!C CN LAT 15 1

A::e: pts to obtain a Makeup Tank (MC-T-1) gas sa=cle through MC-7-13 vere not successful because of so flev :hrough the sa=cle line. To resolve this, it was decided :o increase the Makeup Tank pressure in 5 psig 1:cre=ents up to a =ax1=um of 40 psig :o eb:ain flew.

2.

• he ? essuriser level,::ansmit:ar (RC-1-I.!:) channel selec:or relay was replaced. I: vas determined tha: the spurious losses of this ? essuri:er level indicatien were due to a faul:7 sv1:ch.

3.

MC-7-13 was cycled at varicus :1=es early in the day to bring ? essurica level f:cu 136 inches :o 126 i=ches.

• he 12:en: vas :o have ::.!:1cien:

vol==e available is the ?ressuriser to adjust for the increased laactor Coolan:-System volume which resul:ed f:cm the reduced le:devn flew during

he pressure redue:1cn used in degassing :he Reactor Coolan:.

4.

Using Special Operating ? ccedure :-57, :he cperators restarted degasifi-cation of the Reac:or Coolan: Systes by loweri:g leac:or Coolan: Sys:es pressure f:cm 331 psig :o 326 psig. Periodically :he ? essurizer vent valve (IC-7-137) was c7cled :o assis: in degasr..:g and :s verify e.a: gas bubbles were so: presen: in :he Zeactor Coolan:.

5.

Reactor 3u11 ding ?.=ergency Cooli=g liver 'Ja:e: ?u=p la (11-?-iA) vas put in service.

'.e Reactor 3u11 ding :e:perature decreased f r = abcu: 937 :o abeu: 357.

5.

Ao::cxt:a:elv 2330 gall:ns of va:e: vere added to :he akeup Tank (E-T-L :.

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06/22/79 Rev. 0 EANT CC!C!TIONS DAY 16 T*2fE 00C0 DA'"I C4/10/79 REAC*CR CCCLAN'" ST5'"IM STS*IM LCCP A LCOP 3 FRISSURI 326 psig

• IMPIRATURI T(ICT) 232 F 233 ?

T(COLD) 230 F 278 ?

FRISSUR:2I2 LI'72 207 inches

'iCORI III2MCCOU7LIS 401 F A*

E-08

(?!7I HIGHIST) 388 F AT E-05 357 ?

AT G-05 344 ?

AT M-09 316 F AT G-06 C?!2ATING PUMPS 2A NCNE STIAM CEERATCRS L 'EI.

375 inches 251 inches

~

S~AUS S:aa=ing :: :he

• sola:ed sain c denser RIACTCR 3C'!. DING IM?I2A"" RI 34.0 ?

FRESSURI

-1.0 psig HT RCGET 1.6%

ADDITICNAL CC! CIT!CNS 1.

Reac::: Caolant Sys:e degasilica:10: by pressure reductics was in pr:gress in accc dance vi:h Special Operating ? :cedure Number 2-3 7.

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C6/22/79 Rev. O C4/12/79 2ay is SGMARY CF EL*CR I'7?N*S CCCL*RR'NG CN 2 AT 16 Follev1 g depressu 1:a:1:n :s 325 psig during degassing, Reacter Coolas:

System pressure was raised :s 1000 psig.

2.

Approx 1:ately 3680 galicus of va:e: vas added :s :he Makeup Tank (Mt'-7-1).

3.

Reacts: Coolan: Syste= leakra:e was calculated and recorded in the Control Roem Cperators 1:gbock several :1=es during :he day.

Se icves: leakra:e calcula:ed was 0.3 gallons per =inute and the highest was 4 gallens per rJ.:u c e.

4.

After having been cut of Operation since 3/29/79, Pressurizer level trans-ed.::er (RC-1-LT2) resu=ed opera:1:n.

5.

Replace =en: of the charcoal fil:ers in Trais A of the Auxiliar7 3u11 ding 7en:112:1cu Sys:em was begun.

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C6/20/79 Rev. C PLC'" CCNDIT!CNS DAT 17

""OfE CCCC DN"E C4/13/79 RFACTCR CCCLAT* 5STDi STS*Di LCOP A LCCP 3

?RESSURE 977 psig N ERATURE T(ECT) 231 F 236 F T(CCLD) 233 F 279 F FRESSURIZER LP_

209 inches CICCRE 1RMCCCU?LES 380 F r

H-08

(?!'TE HIGHEST) 380 F A*

E-05 349 F AT G-05 341 F C

% 09 310 ?

r G-06 CPERATDIG PCMPS 2A NCNE 5* RAM GUTE?lTORS LT 370 inches 304 inches S*JLTOS Steaming :o :he

solated nain condenser R?lCTCR 3UI!. DING N ERA *URE 88 0 ?

FRESSURE

-0 6 psig HTDRCGET 1.5%

.CD'*!CNAL CCNDIT!CNS Sere sere cue of any significance.

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C4/13/79 Oay 17 SI'MMARY CF VA.*CR EVE'r"S CCC"RRING CN D AT 17 1.

At about 0110 hours0.00127 days <br />0.0306 hours <br />1.818783e-4 weeks <br />4.1855e-5 months <br /> the Rydrogen Recc biner ::1pped off.

• his was due to burned out electric hea:ers.

2

• he reactor coolant average leak rate was deternised :o be 2. S gallons per ninu:e 'sith a standard deviatien of 1.05 gallons per =inute.

• his leak rate was calculated by using :he va:er level decrease in the ? essuriser and the Makeup Tank.

3 App cxd 2:ely 2750 galicts cf va:er was added :o the Makeup Tank (MC-T-1).

Mos: of this va:er was f cu the Reac ce Coolas: 31eed Tanks (*G L-I-1.1, 13, 1C); havever, scue was f:cm the 3cric Acid Mix Tank (CA-T-1).

1.

? essurimer Level Transmi::e: (RC-1-LTC) which was returned to service c Ap:11 12 was still ::acking but noise analysis indicated sc=e signs of fatigue which eculd lead to failure. Nois( analysis indica:ed :ha: (RC-1-LT3) cu:put was still valid.

5.

Cooldev: of the Reactor Coolas: Syste: vas ini:ia:ed at abou: ICCO hcurs.

• he !,ld at star: of cooldev was 2327, by 13C0 hcurs T o.3.a was OfC7.

ce

• he ha::es: :: core *her:occuple (23) was in.itially reading 380 7; a: '900 hours0.0104 days <br />0.25 hours <br />0.00149 weeks <br />3.4245e-4 months <br /> :his ther:occuple was reading 3507. During :his decrease in leactor Coolas: ta=perature, :he plan: e :ered Technical Specifica:ic: Mode 1* a:

1005 hours0.0116 days <br />0.279 hours <br />0.00166 weeks <br />3.824025e-4 months <br />.

6.

A ;;'-' y coolas: sa=rie was :2 ken for ::anssi::a1 :o :daho Falls, :daho f::

analysis by Allied Chemical Co.

ar-gal Specifica:1:n Mede a is definec as reac::: he: stu:dev vi:::

oy L. '

k,,, < 0.99, ! ra:sd ;cve: = C and average leac::: Occias: :a:pera:ure I h

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< 23C7 bu: > 200 ?.

C6/22/79 Rav. O PLAN

• CONDIT:CNS DA!

la TDfE CC00 DA*E Ca/14/79 REACTOR CCCLL'T" SYSTri SYSTDi LOOP A

• CCP 3 FRESSURE 338 psig TDfPERATURE T(HCT) 251 F 251 F T(C01.3 )

250F 247 F FRESSUR22ER L_P_

158 inches CICORE *EIRECCCC?'_ZS 350 F AT H-05

(?IVE HIGHES*)

340 F A*

H-08 321 F AT G-05 310 ?

A*

M-09 282 ?

A*

G-26 CPERATDiG PUMPS 2A NCNE S*IAM GETIRATORS LUII.

375 inches 325 inches S*A*05 Stea:ning to the

solated main ec denser REACTOR 3UT'_ DING TZMPERATURE 85 0 F FRESSURE

-1 0 psig EITRCCOI 1.352 (Samp'ed at CICO)

ADDITICNAI. C0!TD!TIONS here vera scue of any significance.

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06/22/79 Rev. O C4/14/79 Oay 13 S M A't? CF MA!CR E"I'CS CCC"RR!NC CN OAY 19 1.

A Reactor Building air sa=ple was obtained by opening Air Eacdling Equip =en:

Valves 101 :hrough ICS (AH-7-101 :hrough AE-7-108) to Radiation Detection and Sa:Pling Moni:or 227 (H?-R-227). Reac:or Su11 ding hydrogen gas cencen::a-

1cu vas approxima:ely 1 35%.

2.

Pressurizer Lavel Transmi::er (IC-1-LT3) failed high, returned :o nor=al indica:1cn and then beca=e erratic.

3 Approxi=ately 3470 galicus of va:er were added to the Makeup Tank (EU-T-1).

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06/22/79 Rev, o PLAlf" CCFDIT!CNS DAY 19

• .5 C000 DATE C4/15/72 FIACTCR CCCT AN* STSTn!

STS*IM LCOP A LCCP 3 FRESSRI 821 psig

~IMPERA*"RI *(ECT) 248 7 244 ?

T(COLD) 243 ?

244 ?

FRISSTRIZER I..P.

147 inches C;CCRI THERMCCCC7LIS 348 ?

A*

H-05

(?!7E HIGHIST) 346 ?

AT H-03 316 ?

E

'r-0 5 305 ?

AT M-09 379 ?

A*

G-06 CPF. RATING ?CMPS 3A NCNE S~EAM GriERATCRS L.'F:

370 indes 370 inches STAT"S Steaming to the Isolated

=ais eendenser REAC CR 3UDC;G

• Df? ERAT RE 82 0 ?

PRISSURI

-1.0 psig HYDRCGDI Noc Sa~ pled ADDIT!CNAI CCND!!!CNS 1

• here were sene -af any signi'icance.

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6/02/79

?xt. 0 4/15/79 Oay 19 3DO91.? CF %'CR I'IET*S CCC"UDIG CN OA? 19 1.

Acproxinately 3560 gallons of water vere added :s :he Makeup Tank (F.C-T-1).

2.

Se Hyd:: gen leccubiner that ::1pped due :s a burned cu: elec::ical heace:

cu April 13 had been repaired and was returned into serrica.

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06/ :/79 Rev. O

?LL'i* CONDIT CNS DAY 2C

""DfE CCCO DATE C4 /16 /79 REACTCR CCCLAN"' STS Df STSIDf LCCP A LCCP 3 FRISSURE 811 psig

• Df? ERA""'RE T(ECT) 250 ?

250 ?

T(CCLD) 247 ?

244 ?

?RISSURI221 Les s 157 inches CICORE ~2I2McCCU?LIS 345 ?

AT H-05

(?!7E E!GHIST) 339 ?

E H-08 314 ?

r G-35 301 ?

r M-09 276 ?

E G-06 CPERATOIC ?Of?S 2A NCNE STIAM GDiERATCRS L.7?'

345 inches 373 inches S~.CS Stes: ting :s :he Isolated

=ain ccedenser REACTCR 3UT'3D'G IMPERA"."22 32 3 ?

FRISSURE

-1 0 psig HTORCGDI Noc Sa=oled A2DIT!CNAL CONDIT!CNS 1

~here were none of any signi51:sece.

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6/22/79 Rav. 0 4/16/79 Oay 20

SUMMARY

CF AJCR E7Dr*3 CCC~ARCIC CN DAT 20 1

Approximately 2120 gallens of demineralized water vere added :o the Reacter Coolan Sys tem via the..akeup *ank (MU-I-1).

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C6/22/79 Rev. O PLUTT COND!'"*CNS DAT 21

• I.E 0C00 OATI 04/17/79 REACTCR CCCLA2T* STS""IM SYSTDi

'CCP A LCCP 3 FRESSURE 375 psig TDf?ERACRI T(E0*)

248 F 249 F T(CCLD) 246 F 243 ?

FRESSL"t:TIR '.

192 inches O!CORI *RIIMCCCU?T25 340 F AT E-05

(?!VE EIGHIST) 329 ?

AT H-08 310 F AT G-05 298 F AT M-09 274 F AT G-06 CPERA!!.NG PCM?S 2A NCNE STIAM GEE 3ATCRS LEVEL 395 inches 383 inches STA C S Steaming to the

solated

-.ain condenser RIACTCR 3CI'3!NG

• Df? E2A*URE 31 5 ?

?RISSURI

-1 1 psig ETTRCGET 1 36:

ADDITICNA' CONDITICNS

'here vere acne of any significance.

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C6/22/79 Rev. O C4/17/79 Oay 21 SUM'_ARY CF MAJCR E7E'T*S CCC"?l!'iG CN DAY 21 1.

Approx 1:ately 2320 gallons of dentneralized va:er was added to the Makeup Tank (MU-T-1).

2

• he Reactor Coolant te=perature was decreased frem 2487 at CCCO hours to 2347 a: 2000 hours0.0231 days <br />0.556 hours <br />0.00331 weeks <br />7.61e-4 months <br /> and then increased :o 2237 at 2200 hours0.0255 days <br />0.611 hours <br />0.00364 weeks <br />8.371e-4 months <br />.

• he ho::es:

2ncore *hermoccuple decreased frem 3407 at CCCO hours :o 3217 at 2400 hours0.0278 days <br />0.667 hours <br />0.00397 weeks <br />9.132e-4 months <br />.

3.

Twenty of mise:7 charcoal filters in T:.in A of the Auxiliary 2 diding 7e :11-ation System vere changed.

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_?LANT CONO'TIONS DAT 22

• 2.5 0C00

A*I C4/1?/79 RIACTCR CCCLAN* STS*Di STS IM LCOP A LCOP 3 FRISSURE 359 psig TIMPEMTURZ T(ECT) 228 ?

238 F T(COLD) 225 ?

23 : ?

?RISSUR:22R LI7E.

173 inches DICORE ~HELv.0CCUPLES 331 F A:

2-05 (E 7E EIGE2ST) 317 F AT H-08 300 ?

A*

G-05 232 ?

AT L-06 231 F A*

E-09 CPEM T2!G ?O"PS 2A NCNE STIAM GETERA*CRS L 7*'.

282 inches 363 inches S*A*US Steasing :o the

' Isola ted nain c:= denser RIACTOR 3U'*.0!NG

• IMPERA*;RE 30 0 F PRESSURI

-1 2 psig HTORCGET Not Sa= pled ADD!TICNAL CONDITICNS here were sene of any significanca.

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C6/22/79 Rev. O C4/13/79

,ay.,

ST.*MdARY OF 'dA.!CR E7DT"S CCC"ERI?!G CN C AT 22 1

Steam Generats: 3 level was increased f:cm apprext-a:aly 359 inches :s app:cxicately 375 inches.

2.

A :stal of 3750 galicas of water va.re added to :he Makeup Tank (MIT-T-1).

3 Reactor Coolas: ?:essurize level Trans=1::e: (RC-1-LT2) failed.

4.

A reactor coolant sa=ple was ob:al=ed and se:: :o 3abcock and 'Jilecx in Lynchburg, 7A for analysis.

5.

Fif ty of the size:7 char: cal filters in Tral: A of the Auxiliary 3u11di:g 7en:11a:1cn System were charged.

5.

The Heise pressure gauge for al:er: ate ? essurize level indica ice was again :ested vi:h unsa:isfcc:ory results.

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?tA.T" CCNr!T CNS DA!

23

=

CCCO

ATE C4/19/79 RIACTCR CCOLANT SYS"""M STS*"

LCOP A LCCP 3 FRISSURI 208 psig

• IM?IRAT"R.I T(ICT) 23 2 ?

220 F T(CCLD) 228 F 229 ?

FRIS SURIZI2 LJ. < :.-

?57 inches INCCRI *HIEF.CCCU?LIS 329 F AT E-05

(?IVE EIGHIST) 313 F A*

E-08 298 ?

AT G-05 291 ?

A"'

M-09 265 7 AT G-06 CPI 2ATING ? UMPS 2A NCNE 3"'IAM CDTIRA*CRS Lt. a 382 inches 370 inches STA"'US Steaming to the Isolated

=ain condenser RIAC CR 30!LDING

• IMPIRA""'RI S4 0 ?

?RISSURI

-1 0 psig EY::RCGri Not Sa pied ADD!TIONAL CCNDIT*CNS 1.

Pressuri:er level was being centrolled by ::s:ssi::er (RC-1-LT3).=

'he scher two level ::anssi::ars (RC-1-L!l and LT2) had failed. Tes: :n :he al:erna:e Heise gage level indica:icu yielded unsa:isfac:srr resul:s.

M*cte :ha: en 4/14, RC-1-LT3 failed high, re:urned :s nor=al :t in beca e erra:1c.

On April

'7, RC-1-LI vas 1:s the returned 15.inu:es la:ar. C: Ap r i'.

'3, RC-1-L 2 again was 1:st.

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06/22/79 Rev. 0 04/19/79 047 22 SCO'ARY CT 'dA.!CR E7?N*S CCi" L*CNG CN SAY 23 1.

At 1220 hours0.0141 days <br />0.339 hours <br />0.00202 weeks <br />4.6421e-4 months <br /> the Main Turbine was put 12 service :s further cooldown the Reac:cr Coolant System. 37 1415 hours0.0164 days <br />0.393 hours <br />0.00234 weeks <br />5.384075e-4 months <br /> the Mai: *urbine was in =anual*

at 32 rps with a pri=ary cooldevn ra:e of approx 1=a:e17 2 /hr. Curing the day the average coolant ta=pera:ure was decreased fr:m 225? :o 1977.

2.

A: 2259 hcurs the uni: en:ered *echnical Saecification Mede 5**

(i.e., less Jan 2007).

3

• he Reacts: Coolant letdown te=perature was increased to 13CF by closing 2 ster =ediate Closed Cooli:g " ate 7alve (IC-7-LA).

4.

App:cxi=acely 2070 gallons of va:e vere added :o the Makeup Ta=k (MU-T-1).

• Cperator =aintaS**g R2M centrol through =anual opera:i:n of f1:v cent ci valve.

• • • 'achnical Specifica:ica Mede 5 vas defined as a reactor c=1d shutdevn ecedi:icu with : I,jg < 0 99, 2 rated pove: = 0, and average ecolant :e:pera:ure < 200'7.

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AT 24 TDfE CCCO DA*Z C4/20/79 RIACTCR CCOLf?"* STS"~2' SYSTIM LCCP A LCCP 3 FRISSGE 350 psig

~i2i? IRA *"RE T(EC~)

197 ?

195 ?

T(CCLO) 198 7 196 ?

FRISSUR*2ER LE7IL 2C9 inches 3CORI TEIRMCCCU?LIS 298 ?

AT E-25 (7177. HIGHEST) 279 ?

AT H-08 268 ?

AT G-05 25 2 ?

A*

M-09 22 9 ?

AT G-06 CPERATI2;G PC2i?S 2A NCNE S~IAM CCTIRATCRS LZ7EL 398 inches 362 inches S*A*"S Stea=1ng :: the 2solated main condenser RIAC CR 3C*T.DDiG

• Ef? IRA!"RI 34.0 ?

PRESSURI

-0 7 psig E70RCGEN Not Sa= pled ACD!T!CNAL CCND'TICNS 1.

"he M.21: *urbine was en line pr:viding an addi:icnal hea: sink.

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C6/22/79 lev. 0 04/20/79 Day 24 SU MARY CF M.*CR :.. c;*S CCC"3R"TG CN DAT 2 4 1.

Se replace =ent of the char: cal fil:ars in Train A of the Auriliar7 3uilding 7en:114:1:n System was complete. Replace =en: of several HI?A filters was perfor=ed.

2.

Approx 1= ate 17 2000 gallens of desi eralized water were added :o the Makaup Tank (MC-I-1).

3.

Se Heise pressure gauge for al:ernate Pressurizer level indicati:n was again :ested with unsatisfactory resul:s.

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? TANT CONDIT!CNS DAT 25 TOfE C000 OA*I 04/01/70 REAC~CR CCCLAN* STS T.

STS*Di LCCP A LCCP 3 FRISSURE 392 psig

• 2*JERACRI T(20*)

180 F 130 ?

T(CCLD) 175 F 174 ?

?RESSURIZI2 LZ7E!.

161 inches DiCCRE W.MCCCUFLIS 275 7 AT H-10

(?!7E EIGHIST) 254 7 AT H-08 244 F AT G-05 238 ?

A" M-09 214 F AT G-06 CPE3AT2?G FUMPS 21 NCNE S IAM CD'ZRA*CRS LE7II.

395 inches 265 inches STACS Stea-ing to :he Isolated main credesser RIAC~CR 3UTLD!'!G

• Di?ERAZR2 96.0 ?

?RISSURZ

-0 7 psig ETORCCE:7 Noe Sa= pied ADD!CCNAL CCND!T!CNS 1

• he Main Turbine was := line providing an addi:10:21 heat sink.

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C6/22/79 Rev. O C4/01/79 Cay 25 SD^dARY CF MA.*CR E7'DT"*3 CCC"RR:NG CN OA? 25 1.

The estinated Reactor Coolant Systen leak ra:e at C413 hours was 2 3 gallens per nicute.

2.

Train A of the Auxiliary 3uilding 7enti.lacion Syste= vas placed in service and Train 3 was renoved. Charcoal filter replacemen: in Train A of :he Peel Eacdling 3u11 ding 7ent11stica Systen was ini:1ated.

3 A ?ressuriser level test was conducted. A vide variation in calculated Pressurizer level, readings fren level transni::er RC-1-LT3 and :he Heise gage level indica:ica lead to a decision to use the calcula:ed levels for Pressurizer level control.

4.

Approxinately 4540 galicus of va:er were added to the Makeup Tank O!U-T-1).

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?!.A?."" CCND:T CNS OAY 25

• IME CCCO OA2 C4/22/70 REAC*CR CCCLA2."" STS*IM Sv 5""IM LCCP A LCCP 3

?RISSURE 395 psig N ERA *URI T(207) 130 7 130 ?

T(CCD) 173 ?

174 7

?RI'SUR!!!R LZ7EL 241 inches raCCR2 3"MCCCUTLIS 274 ?

AT H-05

(?!7E HIGHIST) 254 ?

AT

' C3 d-243 ?

AT G-05 220 ?

A*

M-09 214 ?

AT G-06 CPERATO?C 2CMPS 2A NCNE S*IAM GI TERATCRS LEVI-.

420 inches 355 inches STAT:S Steaming :o :he Isolated

=ain condense RIAC*CR 3U!!.DI'C N ERA *URI 94 0 ?

FRESSURE

-J.3 psig HTORCCEN No t Sa= pled

.CDITICNAL CCND!TICNS

'he Main Turbine was ac line pr.widing an additiccal heat s in k..

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C6/01/79 Rev. O C4/02/79 Cay 26 SUMdARY CF WA.?CR I*T!'i*3 CCC"7 RING CN OAT 26 1.

S t ea::t Generator 3 level was increased frc:a approxi= ate 17 3f 9 inches :s approxinately 375 inches by the Control Rocs Cperator.

2.

• he contents of Neutrali:er Tank 3 (DL-T-43) was transferred :s Uni: 1.

3

• he Hydrogen Recembiner was out-of-ser rice for approxinately 18 hours2.083333e-4 days <br />0.005 hours <br />2.97619e-5 weeks <br />6.849e-6 months <br /> due to an open hea:er breaker in the Hydrogen Recembiner.

• he E drogen 7

Rece biner was later returned to service.

4.

A Reactor Coolant sa=ple was obtained and sen: to 3abcock and Wilcox a Lynchburg, 7A for analysis.

~he sa=ple was collected using Special Cperating Procedure Number :-95 (SCP Z-95).

5 Approx 1=ately 2100 as11ons of water were added to the Maisup Tank (MU-T-1).

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06/22/79 Rev. O PLAN

• CCNDIT!CNS CAT 27

!!ME CC00 DA*E C4/23/79 REACTOR CCOLANT STS'"ZM STS*EM LCCP A LCOP 3 FRESSURE 915 psig TEMPERA *"RE T(HOT) 179 ?

179 ?

T(CCLD) 173 F 175 7 PRESSURIZER LI Fr 213 inches CICCRI F M CCCU?LIS 273 F H-05

(?!7Z HICHEST) 254 7 r

E-08 241 ?

E G-05 231 F r

M-39 212 7 r

G-06 OPERATING ?UM?S 2A NCNE STEAM GETE2A*CRS LEVEL 390 incues 376 inches STATUS Steaming to the Isola:ed sais condenser REAC*CR 3U'LDING

• Df? ERA *URE 98 0 ?

FRESSURE

-0 7 psig ETORCGET Not Sampled ADDIT'CNAL CCNDITICNS

'he Main Turbine was au line pr:viding an addi:1ccal hea: sink.

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06/22/79 lev. 0 04/23/79 Ca7 27 SUM'd. ART OF MAJCR I' TEN S CCC'"LCIC CN DAT 27 1.

Neu::aliser Tank 3 ('.TL-T-83) overflowed dur1=g the precess of pu= ping the concents of :he Miscellaneous 'a'aste Holdup Tank :o the Neu::ali:er Tank.

2.

Ap prcx1=a te17 2190 gallons of water were added to the Makeup Tank (MU-I-1).

3 Be Heise gauge for alternace Pressurizer level indica:1cn was again tested with unsatisf actory results.

4.

• he replace =ent of charecal filters in Train A of the Fuel Hand 11:g Suilding 7ent11a:1cu vas ce=pleted. Replace =ent of the charcoal filters in Train 3 of the Atrrt11ary Su11 ding 7en:11aticu Syste vas initiated.

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?LL'i~' CCNDITICNS DAY 23 TOIE CCCC DATE 04/24/79 REACTOR CCCLAN* SYSTE2d SYSTEM iCOP A iCOP 3 FRESSUF.E 902 ;sig TEMPERATRE T(HCT) 180 F 180 F T(CCLD) 175 F 174 F FRESSURIZE2 LE7EI, 159 inches INCCRZ N'.CCCC7LES 277 :

E H-05

(?!7E HIGHEST) 254 F AT H-JS 241 ?

AT G-05 232 7 M-09 212 ?

E G-06 CPE3A!2iG PCMPS 21 NCNE S IAM CINERATCRS LE7EL 288 inches 370 inches S ACS Steaming :s the Isolated main condenser REACTCR 3U*!.DINC

• E'PE2A-"12 94 3 ?

?.CS SE22

-0.7 psig HYORCGZN Ncc Sa= pled

.CDI-*CNA'. CCNDITICNS

• he Mais !arbine was an line pr viding an addi:i:nal hea: sink.

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C6/: /79 Rev. O C4/24/79 a7

.Sg m

S M ART CF MA.*CR EVDi*S CCC"RRI?!G CN DAT 23 1.

Train A of the Fuel Handling Suilding 7ent11a:1on Syste= vas placed in service and Train 3 was re=oved.

• venty-eight of the ninety char:oal filters in Train 3 of : e Auxiliary 3uilding 7en:11ation Systes were replaced.

2.

Approx 1= ate 17 2,730 gallons of water vere added to M.2keup Ta=k (MC-T-1).

3.

At about 1500 hours0.0174 days <br />0.417 hours <br />0.00248 weeks <br />5.7075e-4 months <br /> the Main Turbine was :anually : ripped because of a vata:

ha==er.

An atte=pt was =ade to restart the Main In:bine; however, this was not successful and the Reactor Coolant te=cera:ure increased from ISSF until it stablizied at 22CF. The hattest : core Ser=occuple (E-5) reading increased from 2357 at 1700 hours0.0197 days <br />0.472 hours <br />0.00281 weeks <br />6.4685e-4 months <br /> to 309F a: 2400 hours0.0278 days <br />0.667 hours <br />0.00397 weeks <br />9.132e-4 months <br />. During :his increase in Reactor Coolant ta=perature, the plant entered Technical Specifica:1:n Mode 4* at 1720 hours0.0199 days <br />0.478 hours <br />0.00284 weeks <br />6.5446e-4 months <br />.

4.

Source Range Nuclea: Ins tru=ent NI-2 f ailed; :his is one of two ins t: ant c annels used to noni:or the nuclear source range.

5 Se Hydrogen Recombine: ::1pped off line and re=ained off i:: approxi=ately 10 minutes before 1: vas reset and returned :o :peration.

• Technical Specification Mode 4 is defined as react:r hot shutdov vi:h:

k,jf < 0 99, I ra:ed pcver = 0, and average leact:: Coolan: :e:pera:ure

< 2307 bu: > 2CCF.

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• CCNDITICNS DAY 29 3

0000 DATE 04/05/79 REACTCR CCCLANT Svs IM STS'"re.

LCCP A LCOP 3 FRESSURE 930 psig

• IMPERA*URE T(ECT) 221 F 223 7 T(CCLD) 200 ?

219 F PRESSURIZIR L M 278 inches CICCRE *HER.'d.CCCU?LIS 309 ?

AT E-05 (717E HIGHEST) 293 ?

AT E-08 278 7 A*

G-05 274 ?

E M-09 245 ?

AT G-06 CPERA* dig PCMPS 2A NCNE S*EAM GENERATCRS L.M.

405 inches 375 inches S* CUS St. ming to the Isolat ed

=ain conde:ser RIACTCR 3CILDING

• IMPERATTRE 99 0 ?

FRESSURE

-0 7 psig HTORCGIN Noc Sa= pled ADD!**CNAL CCNDIUTCNS

'here were none of any significance.

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C6/22/79 Rev. 0 04/25/79 227 29 STM' ART CF %'CR E7Er5 CCC':2 RING CN DAT 29 1.

Replace =ent of the charecal fil:ers in Train 3 ::ain of the Au: ciliary 3u11 ding 7en:11a: ion System "as cc=pleted and Train 3 was returned Oc ser ric e.

2.

Ap pr evi,2:e17 1500 gallsns of water were added to he Makeup Tank (MU-I-1).

3.

Se Heise pressure gauge for al:ernate ? essurize level indication was again tested with unsatisfac: ry results.

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?T G CCNDI'"'CNS DAY 30 T'MI CCCO DA'"I 04/25/79 RIACTCR CCCLU;T 5?S'"IM

$?S'"IM LCCP A LCOP 3 FRESSURI 905 psig

• Di?I2A!"RI T(20-)

227 7 228 F T(COLD) 224 F 223 ?

?RISSURIZIR LI'TIL 222 inches DiCCRI FVCCCU?LIS 312 F AT E-05

(?I7I E!GHIST) 296 ?

AT E-08 233 ?

AT G-05 276 F AT M-09 252 7 AT G-06 OPERATO!G ?CM?S h

NCNI S IAM GINIRA*CRS LIVIL 420 :ches 370 inches STA*"S Stea:21:g to the

'.s cia ted

=ain condenser RIACTCR HUP _. DING

""Of?!RA'""RI

• F

?RISSURI

-0 8 psig EIORCGDI No t Sampled ADDITICNAL CCNDITICNS S e :ain turbine was act t r.J. g.

• (Note: Cut of Service)

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C6/22/79 Rev. O Cl/05/79 Oay 30 SO' MARY OF MA.'CR E7DCS CCCURRING CN DAT 30 1.

Approx 1: ate 17 1000 gallons of vacer vere added :o Makeup Tank (MU-T-1).

2.

The vide range level indicator for the "A" staa= generator failed.

3 Se al:ernate Pressu 1:er le rel indication was again tested vi:h unsatis-factory results. 3ased on the test resul:s, the Heise gauge was regarded as an u:: usable level indicator a=d so further :ests were attempted.

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C6/22/79 Rev. O

?LANT CONDIT!CNS CA?

31

!"ME CCCC OA I C1/27/79 RIACTOR CCCLAN STSTIM STS IM iCCP A LCOP 3 FRESSURI 381 psig IIMFE2A*URE *(HCT) 227 ?

227 ?

T(CCLD) 224 ?

223 ?

FRESSURIZER L-'TEL 258 inches DiCCRI *HI 0.CCCU?LIS 311 ?

AT H-05

(?!7E HIGEEST) 295 ?

AT E-08 282 ?

AT G-05 275 ?

A*

M-09 25 2 ?

AT G-06 CFERA*2iG FUM?S 2A SCNE S""ZAM CENIRATORS L,w

• inches 318 inches STATUS Ste tMng s the Isolated sais c ndenser REAC*CR 3UI'DU G

• IM? ERA!"RI

• ?

FRISSURZ

-0.8 psig EDRCCE'i No t Sampled ACDITICNAL CCNDIT'CNS 1.

Full range ' e'rel indicacian on Stes= Genera::: A had failed.

• (Note: Cu: of Se rice)

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C6/22/79 lev. C C4/27/79 Oay 31 SDe'ARY OF 'd.COR E7EN'"S CCC"RR NG CN OAY 31 1.

Pressuriser Level Trans=1::er (IC-1-LT3) failed.

• he cperater cec =enced I=ergenc7 Procedure I?-21, "'"otal Loss of Pressuri:er Level : dica ic=" :o deters 1:e level.

2.

!= prepara:ica for natural circulation, Steam Generator 3 was s:ea=ed ts the cc denser using the Turbine 3ypass 7alves at 25 open.

Cue to :his scen

• g, increases in airborne radioac:ivity were detected. Respira: ors were :equired in the Con:rol Iccm for several sinutes and in the Turbice 3uilding for between three to four hours. All unneccessar7 persennel were evacuated frem Tei: 2 Centrol and Turbine 3uildings. Ini:1 ally i" was thought tha: the high airborne activity was Icdine. Later even:s sheved that the activity was nestly Ienen 133 vi:h :: aces of Ienen 131 and 135 which had saturated the SAM-2 detectors and gave a false Iodice indica:icn.

3.

~he transitice to natural circulation was acce:plished a: 14C8 hcurs by stepping laac:cr Coolant ?_- p 2A (IC-?-2A). Steam Generators A and 3 were used :s pass steam :s the condensor through the Turbine 3 pass 7alves 7

CiS-725A, 26A) vnich were 100 and 25: open, respec:ive17 Na:::a1 circulatica and cooldevn a: 5o ? per hour vent smoothlv vith dT*A = 1CF and d!*3 = M. Due to icv steeg ra:e en Steam Querator 3 the C3 ulti=ately increased :o apprezima:ely a47.

3ecause of :he degrada:1:n :f

he ? essurizer and Stea= Generator level instru=en:atic the :: ansi:1:n :s

atural :1rculati:n was ini:ia:ed ahead of sc edule.

• Note:

d!, and dT represen: de :egeranre Merence acr:ss :he ;hn 3

a sides of Staa= Genera:::s "A" and "3",

ssp e c tively.

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C6/22/79 Rev. O The Rydrogen Recenbiner tripped off Line and was off f or 20 ninutes bef ore a.

1: vas reset and pu: back ints opera:1:n.

5.

Average Reactor Coolant cenperature decreased frem 2257 :o 132F during :he day due to natural circulatico. This :enperature decrease caused the plant to enter Technical Specificatirn Mode $* a: 1900 hours0.022 days <br />0.528 hours <br />0.00314 weeks <br />7.2295e-4 months <br />.

6.

Approvi-a tely 3850 galicus of water were added :o the nakeup ta=k (MC-I-1).

' Technical Specification Mode 5 is defined as a reac:or cold shutdevn condi:1cn with:

K,ff < 0 99, I rated power = 0, and average coolant te=perature 5,200 F.

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C6/22/79 Rev. O

~3I.A'C COND!T!CNS CAY 32 TDC 0000 DA*E 04/08/70 REAC*CR CCCLAN* STS'"Dd.

SYSTEM

'.CCP A

!CCP 3

?RESSURE 900 psig

• EMPERATURE T(30-)

138 F 205 ?

T(COL 3) 174 F 161 ?

FRESSURIZER LE7EL 262 inches DiCCRE !"2E2MCCCU?LES 306 ?

r E-08 (FI7E EIGHEST) 266 ?

AT G-05 243 F r

G-06 217 F AT E-05 217 F r

M-09 CPERATING ?CMPS NCNE NCNE S*F.AM CENERA*CRS LE7IL 410 inches 282 inches STr05 Stanmi,g to the isola:ed

=ain ecudenser REAC*CR BU!!.DDiG

~~2MPE2ATU22

• F PRESSURE

-0.8 psig EYDRCGIN Not Sacoled ACD!C CNAL CONDIT!CNS 1

Se Reac:or Core decay heat was being re=cved by natural :1rculatica :f :he Reac:c: Coolant.

• (Note: Cut of Ser7ica)

(

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06/22/79 Rev. 0 04/28/79 Oay 32 SI'*.ARY OF M.L'CR E7Di S CCERING CN DAY 3:

1.

At 0110 hours0.00127 days <br />0.0306 hours <br />1.818783e-4 weeks <br />4.1855e-5 months <br /> the Turbine 3ypass 7alves f or Steam Generator 3 (MS-7-253 and 253) v9.re isolated. This was initiated when the Station 7ent Radia: ion Monitor E?1-219 increased. I: was later determined :ha: the increase was due to changing :he charcoal fil:ers.

~his was scheduled to be done at sidnight (CCCO hours), but due to delays it was done arcund 0120 hours0.00139 days <br />0.0333 hours <br />1.984127e-4 weeks <br />4.566e-5 months <br />.

2.

Pressurizar level was being calculated using T.=ergency Procedure E?-21,

'*2ccal Loss of Pressurizer Level !:dication." *his value was being ec~ pared vi:h Pressurirer Level transmit:6e (RC-1-LT3) which was back in service.

• 5e decision was made not to use the back-up Heise gauge due :o its poor correlation Oc the =easured level.

3 Average Reactor Coolant :e:perature decreased fr e 1327 to 1757 during :he day as natural circulation continued.

4.

Approx 1=ately 2940 gallons of water were added :o the Makeup Tank (MU-I-1).

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CC/22/79 Ha'r. O M AN'" CCNDIT!CNS DAT 33 TIMI CCCO DATI C4/09/79 RIAC'"CR CCCLA2,"r SYSTIM S S'"EM

'CCP A

'.CCP 3 PRESSURE 913 psig TIMPE3r0RE T(HC*)

131 F 192 F T(CCLD) 167 ?

145 F PRISSI".J.;IR '.27El.

351 inches (calcula:ed)

INCCRI *HI2MCCOUPLZS 322 7 r E-C9

(?!'F HIGREST) 301 F r H-08 25 9 F r M-07 25 8 F AT G-05 241 F AT G-09 CPE2 r !NG PCMPS NCNE NCNE ST:.AM CZNERATCRS L.%

419 inches 38 inches STrUS Stes=1ng to the isolated

=ais condense:

REAC CR 3U'I. DING TDf?E2A*"RI

• F PRISSURE

-0 9 psig HIDRCGET Not Sa: pled ADDI'"'CNAL CCNDIT!CNS 1.

Se leac:or Core decay heat was being re=cved by sa: ural circula: ice of the Reacter Coolant.

• (Note:

Cut of Se: rice) 4

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C6/22/79 Rev. O C4/29/79 Day 33 3D'2"ARY OF MA.*CR EECS CC.%CIC CN OAT 3 3 1

Pressurizer level was calcula:ed several ti=es during the day in accordance vtth E?-21, 'T::a1 Loss of Pressurizer Level bdication". Cenparisons were =ade with indica:1cus fren level ::ansni::er RC-1-LT3 readings.

Since the readings f rom :he level transmitter (RC-1-LT3) were very arratic, the calcula:ed levels were being used f or pressurizer level con:rol.

2.

Acpro e m:ely 14a0 galicus of va:er were added to the Makeup Tank Oc- -1).

P4.;',-

.d.

'C"'"'

4 n

N $N m&E j

_.s-.n-. -.

<.%J t

74 0,

• \\

• ~

06,22/79 Ra*. O PER!T CCNDIT!CNS DAT 34

• I.*'.

CCCO DA!!

04/30/79 RZAC*CR CCCLXT* STSTOd.

STSTrd.

LOCP A

'CCP 3 FRESSURI 911 psig IIMPERAI":2Z T(ECT) 180 ?

180 ?

T(CCLD) 166 7 139 ?

PRISSURIZZ2 LZ7EL 241 :ches (Calculated)

DICCRE THDMCCCC?LZS 324 7 r

E-09

(?!72 EIGHIST) 200 ?

C E-08 25 : F C

G-35 256 7 r

.%37 240 F AT G-09 CPERA~!NG ? UMPS NCNE NCNE ST.AM GE'IE2ATORS LZvIL 429 incher 382 inches S*A*US Stam*ng to the Isola ted main coudenser REACTCR 3CIIDE;G TZMPE2ATURE

• F FRESSURI

-0 9 psig HTTRCGEN Not Sa=cled ACD!TICNAL CCNDIT'CNS 1.

Se Reac:cr Core decay heat was being remcved by na: ural circula:1cn :f the Reactor Coolant.

• (Note:

Cu: of Se:tice)

.s 4

h

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C6/22/79 Rev. O C4/20/79 2ay 34 EIS.ARY CF 'dA.!CR E""5 CCQ3'NG CN DAY 34 1.

Approx 1:nate17 2120 gallons of water were added to the Maieup !.tsk (MC-2-1).

2.

S t ea::t Genera.:or 3 cold leg ta=pera:ure was dropping. 3etseen CC00 hcurs and 0800 hcurs :he temperature dropped 3.9F (0.49 F per hour) and berveen 0800 cnd 2400 hours0.0278 days <br />0.667 hours <br />0.00397 weeks <br />9.132e-4 months <br /> the :enpera:ure d:cpped 23 3 F (149 ? per heur).

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FIGURE 1 TNI UllIT 2 IllCORE TilERN0 COUPLE READIllGS 3/29/79 TO 4/30/79 700 g

g g

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G 400 M*j --

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300 200 A

l l

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6 8

10 12 14 16 18 20 22 24 26 28 30 32 34 DAYS FOLLOUIllG ACCIDEllT FIGURE 1 ( 00tlT ' D )

TNI UtlIT 2 IllCOHE TilERN0 COUPLE READIt1GS 3/29/79 TO 4/30/79 700 p

g g

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I 100

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10 12 14 16 18 20 22 24 26 28 30 32 34

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TMI tJilIT 2 IrtCORE TilERM0 COUPLE READ!ilGS 3/29/79 TO 4/30/79 70U l

i I

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8 10 12 14 16 18 20 22 24 26 28 30 32 34 DAYS FOLLOUittG ACCIDEllT FIGtJRE 1 ( CollT ' D )

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FIGllRE 1 ( C0ldT ' D )

TNI utlIT 2 IllCORE TilERNOC0llPLE READItlGS 3/2D/79 TO 4/30/79 00 g

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8 10 12 14 16 18 20 22 24 26 28 30 32 34 DAYS FOLLOUIllG ACCIDEllT FICllRE 1 ( C0f tT ' D )

TNI UllIT 2 IllCORE TilERNOCOUPLE READIllGS 3/29/79 TO 4/30/79 700 g

[

g g

g g

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600 gi 6 P DR0KEli LIllE E 500 G

G 0 DASilED LIttE 400 F

300 w-

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2 4

6 8

to la 14 16 18 20 22 24 26 28 30 32 34

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FIGURE 1 ( CollT ' D )

TMI UllIT 2 IllCORE TilERM0 COUPLE READIllGS 3/29/79 TO 4/30/79 00 g

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g g

g g

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600 D

3F DROKEtt LIllE E500 G

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300

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10 12 14 16 18 20 22 24 26 28 30 32 34 DAYS FOLLoultlG ACCIDEllT FIGURE 1 ( C0tlT ' D )

TMI UllIT 2 IllCORE THERMOCOUPLE READItiGS 3/29/79 TO 4/30/79 00 g

g y

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10 la 14 16 18 20 22 24 26 28 30 32 34 DAYS FOLLOUIllG ACCIDEllT

FIGtlRE 1 ( CollT ' D )

TMI tit 41T 2 IltC('RE TilERM0 COUPLE READIllGS 3/29/70 TO 4/30/79 I

I I

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700 600 13 F DROKEtt LIttE p

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8 10 12 14 16 18 20 22 24 26 28 30 32 34 DAYS FOLLOUlttG ACCIDEliT FIGURE 1 ( C0 tit ' D )

THI UllIT 2 IllCORE TilERM0 COUPLE READIltGS 3/29/79 TO 4/30/79 A I I

I I

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FIGURE 1 ( CottT ' D )

Tt11 UlitT 2 IttCORE TilERt10 COUPLE READIttGS 3/29/79 TO 4/30/79 g

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to 12 14 16 18 20 22 24 26 28 30 32 34 DAYS FOLLOUIllG ACCIDEllT FIGURE 1 '(C0tlT'D)~

Tiil UllIT 2 IllCORE TilERr10 COUPLE READItiGS 3/29/79 TO 4/30/79 g

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300 w.

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10 12 14 16 18 20 22 24 26 28 30 32 34 h'y, DAYS FOLLoulttG ACCIDEllT

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TNI UllIT 2 IllCORE TilERNOCOUPl.E READIllGS 3/29/79 TO 4/30/79 70U l

~l i

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10 N BROKEli LIttE E 500

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10 12 14 16 18 20 22 24 26 28 30 32 34 DAYS FOLLOUIrlG ACCIDEllT FIGURE 1 ( 00t4T ' D )

THI utlIT 2 IllCORE TilERN0 COUPLE READIllGS 3/29/79 TO 4/30/79 I

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FIGUHE 1 ( C0f tT ' D )

TF11 tillIT 2 IllCORE TilERr10 COUPLE READIllGS 3/29/79 TO 4/30/79 700 1

I I

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Till UllIT 2 IllCORE TilERr10 COUPLE READItiGS 3/29/79 TO 4/30/79 00 g

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L'1 DAYS FOLLOUlitG ACCIDEllT v

FIGURE 1 ( CollT ' D )

Till tJillT 2 IttCORE T* TERM 0 COUPLE READIttGS 3/29/79 TO 4/30/79 l

l l

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Tiil UllIT 2 IttCORE TilERM0 COUPLE READItiGS 3/29/79 TO 4/30/79 00 l

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10 12 14 16 18 20 22 24 26 28 30 32 34 DAYS FOLL0ulttG ACCIDEllT

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FIGtlRE 3 Tr1! UtlIT 2 LOOP A TEt1PERATURE-Il0T 3/29/79 TilRU 4/30/79 300 11 I I II I I I l l l l l l l 1 1 I I I I I I I I I I 280 260 0240 F 220 200 180 I II I I I I I I I I I

I I I I I - II I I I I -

160 2 4

6 8

10 12 14 16 18 20 22 21 26 28 30 32 34 DAYS FOLLOUIllG ACCIDEllT FIGURE 4 T!11 UllIT 2 LOOP A TEt1PERATURE-COLD 3/29/79 TilRU 4/30/79 300 g y i g ;

y ;,

y y g g g g g, ; ; y y, y y,

200 D 260 G 240 F 220 200 180 160 I

I

! ! ! I I I I I I I I ! ! ! I I

I I

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4 6

8 10 12 14 16 18 20 22 24 26 28 30 32 34 DAYS FOLL0ultlG ACCIDEtiT

\\f L

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FIGl1RE 5 Tfil UtlIT 2 LCOP B TEt1PERATURE-IlOT 3/29/79 lilRU 4/30/79 300 11 I I I

I I I I I I I I I I I I I I I I II 280 260 G 240 r220 200 1110 160 - l l I I I I I I I I I I I I I I I I I I I I 2

4 6

8 10 12 14 16 18 20 22 24 2G 28 30 32 34 DAYS Fs'LLoultlG ACCIDEllT FIGURE 6 TF1I UllIT 2 LOOP D TEf1PERATURE-30LD 3/29/79TilRU 4/30/79 3D IT1 i

i i i i i i i i : i i i i i i i i i i i--

200 260 D 240 E

y G 220 200 f 180 160 140 k

120 I

I I I I I I I I I I I I I I I I I I I I I I I 100 2 4

6 8

to 12 14 16 18 20 22 24 26 28 30 32 34 v -

DAYS FOLL0uttlG ACCIDEllT

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FIGURE 8 Till UllIT 2 PRESSURIZER LEVEL 3/29/7D TilRU 4/30/79 400 I

I I I I I I I I I I I I I I I I I I I I I I I I I

I-i 350 il 300 l -

Il aSO 200 150 h

l 11 I I I I I I I I I I i i i I i i I i i i i i i l_

100 a 4

6 8

10 12 14 16 18 20 22 24 26 28 30 32 34 DAYS FOLLOUltiG ACCIDEllT FIGURE 9 Tt11 UllIT 2 PRESSURIZER TEt1PERATURE 4/1/79 TilRU 4/30/79 680 TII I I I I I I I

I I I I I I

I I I I I I I I I 560 0540 E 520 l

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10 12 14 16 18 20 22 24 26 28 30 32 34

'f DAYS FOLLoultiG ACCIDEtiT v

l j

FIGURE 10 Tnl 1HIIT 2 LETD0Uti TEf1PERATURE 3/29/79 TilRU 4/30/79 00 l I I I I

I I I I I I I I I I I I I I I I I tu0 D ggc I

1140 F 120 p

100 no N

I I I II I

I I I I I I I I I I I

I I I 60 2 4

6 8

10 12 14 16 18 20 22 24 2G 28 30 32 34 DAYS FOLLOUIllG ACCIDEtiT FIGURE 11 Tt11 UllIT 2 LETD0Uti FLOU 3/29/79 TilRU 4/30/79 30 7j g, g g g g g g

g g

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FIGtlRE 14 Tit! UillT 2 STEAR 1 GEllERATOR A PRESSURE 3/29/79 TilRU 4/30/79 40 1]

- QI I I I I I I I I I I I I I I I I I I I I I l l l

~

,30 20 S 10 f,

0 y

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I I I I

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-40 2 4

6 8

to 12 14 1E 18 20 22 24 26 28 30 32 34 DAVS FOLLOUItiG ACCIDEttT FIGURE 15 Tiil Uti!T 2 STEAt1 GEllERATOR A LEVEL 3/29/79 TilRU 4/30/79 450 I

I I I I I I I I I I

I I

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360 c

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S ggg 200 I II I I I I I I l l I I I I I I I I I I I I I l l I 150 a 4

6 8

10 12 14 16 18 20 22 24 26 28 30 32 34 o

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DAYS FOLLOUIllG ACCIDEttT

FIGURE 16 TMI UtlIT 2 STEAM GEllERATOR B PRESSURE 3/29/79 TilRU 4/30/79 30 7%

l l l I I I I I I I I I I I I I I I I I I I I I I I

20 I! t o g

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4 G

8 10 12 14 1G 18 20 22 24 26 28 30 32 34 DAYS FOLLOUIttG ACCIDEllT FIGURE 17 Tri! UtilT 2 STEAM GEllERATOR D LEVEL 3/29/79 TilRU 4/30/79 400 g y ; g y y ; g y g g g g g

g y

g y g g g y g g g y ;

j/

380 ft 360 fg 340 E 320 300 h'V 2110 260 l

I I I I I I I I I I I I I I I I

I I

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6 8

10 12 14 16 18 20 22 24 26 28 30 32 34 DAYS FOLLOUIl(G ACCIDEllT

FIGURE 18 Tiil UttIT 2 UASTE GAS DECAV TAttK A PRESS 3/29/79 TliRU 4/30/79 90 T

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