Text

Agendas for 790421-0430 Technical Group Meetings
	ML19221A094
Person / Time
Site:	Crane
Issue date:	04/21/1979
From:	; Office of Nuclear Reactor Regulation
To:	; Office of Nuclear Reactor Regulation
References
	NUDOCS 7905190114
	Download: ML19221A094 (25)
	v • d • e

.g AGENDA Technical Group Meeting 1800 4/21/79

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Radioactive Releases a.

Levels I '-A f 0%

c b.

Identification and isolation of reurces c.

?!onitoring 2.

Status of:

a.

Auxiliary Building vent filters / fire protection b.

Fuel Handling Building filter high activi ty - L-

/ W ' '#'

,^ 2 M I - - -

c.

Decontamination efforts aE -ut W N

d.

Verification of vent header pressure increase e.

Liquid waste processing f.

Leakage past DH-V6B

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-De-oxygenated water ra

-up h.

Status of DF-V2 3.

Proposals for alternate pressurizer level measurement.

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OTS operation using/" auxiliary feed nozzles c-a-5.

Alternate Decay Heat Removal System Sce ~ M c/A$&SfWh r.

Status of design and construction of ADHR b.

Alternate flow paths frco RCS to ADHR c.

Design basis of housing 6.

Natural circulation Initiation of natural circulation while steaming a.

b.

Criteria for cut-off of attempt to get on natural circulation c.

Natural Circulation Advisory Group

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dify, Af4,j

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1) Charter A r, y,_

2) Membership

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,i-is s Plant Modifications Expected Task Task Description Priority Comoletion Status Coord.

WG-2 becon. water in AB using A-1 Operational by "CC available Cobean (L-1)

CAP-GU:; "2" (EPICOR).

4/27 4/20 WO-o Install storage ves2 tis in A-1 Installation (2) tanks set; Cobean/

(L-2)

Fuel Pool "A".

comp. 4/23 piping.

ECM's Gunn 4/21 TS-4 Develop complete package for A-2 Heise Gauges Do not open DeVine/

ceasuring water level inside instal. 4/12 DH-V6B until Cobean/

Reactor Building, approved.

Herbein Wr-1 Install AB/FHB Filter Systen.

A-2 Installation Equin. avail.

Gunn comp. 4/26 4/22 TS-13 Install and complete turnover A-2 To be sched-Gunn package of electrical heaters uled in supply side of Aux. Bldg.

TS-13A Develop complete package for C-1 Installation options being Wilson /

short-term cooling of "A" OTSG.

co=p. 5/3 evaluated.

Cobean Equip. avail.

4/20.

On hold.

TS-10 Decide location design /

C-1 Installation Turnover for Cobean/

install 2-2500 kW diesel comp. 4/20 test 4/26/79 Gunn/

generators - check shipping Toole damage - vendor.

Run diesel, fill fuel syster.

TS-3C Develop complete package for C-1 Revised sched-Turnover for Wilson /

long-term cooling of OTSG "B".

ule by 4/23 test 3/1/79 Cobean TS-11 Develop electrical distribution C-1 Installation Turnover for Cobean system.

Install cabling and conp. 4/20 test 4/26/79 switchgear from DC's to current BOP loads requiring loss of off-site power protection.

TS-6 RC loop passive and active C-2 Instal.ation Reviewing pr'ssure control systen.

co=p. 5/2 schedule TS-6B Design / Install cakeup system C-2 Turnover for for RCS.

test 5/2/79 TS-6C Evaluate letdown capabilities C-2 To be scheduled.

for RCS nodification.

127 305

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2 Plant Modifications 0300 4/21/79 Expected Task Task Descriptfon Priority Completion Status Coord.

TS-14 S'aield for decay heat pump.

C-2 Installation E q t. i p. avail.

Wilson to be sched-4/16 uled WC-16 Provide cap for Aux. Bldg.

Installation Equip. avail.

Gunn vent stack.

coep. 4/26 4/22 WG-10 Cross connect A3 filtration to R3 cleanup system filters.

e 127 506

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030') /21/79 L'as t e "anagement Group Expected Task Task Descriotion Pri rity Completion Status Caord.

G-5 Set-up to change AS/FH Bldg.

1-1 FH3 "A" train 90 of 90 fil-Shoviin/

vent. fil:ers - next will be 4/22 ters replaced.

Futril/

FH 31dg. filter "A".

FH B " B" train Bitel 4/28 AB "B" train 4/25 L-5 Caustic s; aying of Aux. Bldg.

1-1 Continue adding F.ra f t /

areas and su=p.

to su=p.

Stop Seelinger spraying - get direction from team.

L-3 3 Develop plan for tying in tank 1-1 In progress.

Snyder f arm to CJ2-GUN "2".

Investigating secondary tie to tank farm.

G-31 Deter:ine air flow paths in A-1 In progress Itschner (b'G-9)

AB & FE3 Robison m

127 307 gm,,

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A-A

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0800 4/21/79 Technical Support Expected Task Task Description Priority Conoletion Status Coord.

TM-30 Determine uhat B.O.P.

loads C-1 4/21 Criteria issued Capodanno need backup elec. power.

4/13; in review LS-2 Tech. Spec. deletions, changes, C-1 5/1 Issue 5/1/79; Harding and additions for long-ter=

NRC interaction:

(Stair) cooling.

under negotia-tion.

AA-9 Recommendation for end point C-1 4/21 Issue 4/20 Crimmans of degas mode.

TM-32 Review with B&R work on DHR C-1 4/22 Issue 4/22 Capodanno system modification.

TM-35 Establish long-tern plant C-1 4/22 Croneberger/

instrumentation require =ents.

Chishole TM-21b Closed cooling system for C-1 4/21 Capodanno OTSG "B - long-term, high press, criteria.

7 la Closed cooling system for C-1 4/21 Capodanno OTSG "A" - short-term, low t

press. criteria.

AA-61 Updated safety analysis report C-1 4/23 Revised report BSW (bow)

AA-73 Provide plan for actions in Completed 4/19 Completed 4/19 event of primary fle7 degenern-tion.

127 3 08 O

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0$00 4/21,7?

WEST:5GHOUSE Expected 7:s;-

,A o., k Description Priority Coc.pl e t io n Status Cec rd. No t e I.B.l.

Decontaminate for DliR Sys.

C-1 4/23 DII Vaults Siano checkout 4/23 DH Valve Roco I.B.2.

Install Aux. Bldg.

T.V. Monitor C-1 4/21 In progress l1 for existing DHR system j

I.3.4.

Install DHR erate operation C-1 After decon.

}

equip ent 4/26 I

I I.3.5.

DHR flow / pressure tests C-1 After decon.

II.A.l.

ADilR (new) system design and C-1 4/24 Ongoing I2 approval l

4 II.A.l.

ADER final test procedure C-1 Ongoing i

t I

II.A.l.

Final ADHR installation C-1 4/24 Ongoing 3

procedure 3

I II.A.2.

ADllR procurecent C-1 4/27 Ongoing II AD11R installation C-1

, s ta s

4 Licensing Report C-1 4/20

^~;oing Notes.

(1) Final camera installati:n c'cer Aux. Building decontaminatien.

(2) Interior piping design :ceplete 4/20.

(3) Skid off-lcading ECM su': itted '/20; Weld-O-Let structural tests complete 4/19.

(4) Excavation ECM subsitte: 4/20.

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0800 4/21/79 Industry Advisory Group l

Expected l Tank

' task Description Priority Cong1 tion Status Coord.

1 l.

Determine method of finding 1+

ASAP Lawborski leak in vent header 2.

Provide reccomendation fer 1

In progress Ackerman alternate methods of P/V control 11.

Instrumenc diagnostics 1

Continuous Ackerman 16.

Put all TC (Reactor) on 1

In progress Ackerman recorders 16c.

Order of priorities 1

Completed 4/19 Completed 4/19; Zigler See close-out memo IA-16a 17.

On-line monitoring of born 1

In progress Ackerman and gasses 18.

Risks / Advantages of going to 1

In typing Paddlefor Natural Circulation as is vs.

Present Plan High counting rate BF3 detector 1

Completed 4/20 Completed 4/20; M.

Shult:

See close-out memo IA-23 24 Source of airborne contamination 1

Comple:ed 4/20 Completed 4/20; J.

Theising See close-out memo IA-24 25.

Instrument a.

12 selected TC's on recorder 1

In progress Stroupe or computer c.

Confirm 12 TC's selected 1

Completed 4/20 Completed 4/20; Stroupe are correct See close-out memo IA-25c d.

TH & TC on recorder 1

In progress Stroupe 12.

Specifications for Reflux Boiler Test a.

Feasibility 2

In typing Fornando:

b.

Specific parameter 2

In typing Fornando:

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0800 4/21/79 Inductry Advisory Group Expected Task Task Description Priority Completion Status Coord.

13.

Water Level / Reactor P/V a.

Short-tern 2

In progress Acker=an b.

Long-ters 2

In progress Ackerman 14.

Model for boron / gas in 2

Being written Koler pri=ary syste 19.

Time to core melt with no 2

Not started Fornandoz external cooling and re= oval through flooding of contain:ent 22.

Plant Mod - piping and equipnent 2

In progress Lavbo rski 20.

Evaluate various alternatives 3

Not started Lavborski to decontaminate plant; long-ters O

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. f' Technical Group Meeting y Gi ',.9 1800 4/23/79

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Radioactive Releases T 'd Y tv

a.

Identification and Isolation of S.arces b.

Trending at outlet of condenser alc ej ec t.or c.

Possibility >f venting to Auxiliary Build ing f ron reactor p'

coolant drain tank. Pd II*l - Am N*-.**~-

d.

Possibility of other leakage paths from containment to u. g )

a-n.

Auxiliary Building.

Meaning of water 1.evels in gas decay tank

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c.

N go* /-i n >*~+ M.

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2.

Status of:

of

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a.

Formal results of RCS Sample #4 /

b.

Filter replacement ~qrma\\dw'h d deb 5(M

Y c.

Storage provisions for spent f il t e r s. sWi tJ-.6 %d -

h b[

d.

Auxiliary Building roof ventilation system - removable stack plug 7 4 - u m W lo-. -

1 s* 6 t %

A T

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bd A s VM - MT7-e.

EPICOR (Cap-Con II) Schedules -~ L1%

9 ' b d *7 f.

Tank Farm in Unit 2 spent fuel pool *- b M 5

Ag.

Decontamination efforts /ADliR - W h.

Liquid Waste Processing 1.

Shielding of sample line j.

RCS Sample #5; 0500 4/25/79Pa k.

Reactor coolant pressure / volume control system 1.

Feedwater piping connections for alternate solid circula-g~

tion of "B" OTSG AA6 S C fd tth B N M 8" m.

Shielding of demineralizers 3.

Alternate Pressurizer Level 4.

RC make-up boron concentration to maintain 3000 pp, 5.

Schedule and development of plans for initiation of

atural Circulation

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127 313

Inter-OfWce Memorandum P.>

April 23, 1979

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.;c t NATURAL CIRCULATION INITIATION TASK FORCE

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To B. ACKEFl!A'?

S. LEVY Lc x cn Three Mile Island J.

HERBEIN L. PLETKE R.

KEATON V.

STELLO L. KOLCNAY R. VOLLMER M. LEVENSON R. WILSON A Natural Circulation Initiation Task Force is being established with the following membership and charter:

Organization

'!ame On-Site Phone Off-Site Phone Met-Ed/GPU J.

Herbein 944-1538 338-5222 R. Arnold (Alt.)

944-2500 533-3311 Room 454 B&W L. Pletke 944-4206 564 - 3376 Industry Advisory Group S.

Levy 944-0305 (408) 269-5010 M. Levenson (Alt.)

944-0205 Special Instrumentation B. Ackerman 944-1012 939-784 1 Croup L. Kolonay 944-0830 Technical Support R. Wilson

994-o195 774-2721 R. Keaton (Alt.)

> 999-029f 234-5021 NRC V. Stello 782-3950 939-9854 Room 122 R. Vollmer (Alt.)

782-3950 939-1331 Room 211

(* Note:

This memorandum will be re-issued with up-to-date information when moves frcm Trailer City to the Island are completed.)

Charter:

1.

Assemble in Unit 2 Control Room arca in aaticipation of deliberate initiation of natural circulation; or as soon as possible following loss of operating RCP.

2.

Provide real time review of available data and advise plant opera-tions relative to proceeding with attempt to initiate natural circ *;-

lation.

3.

Provide real time review of availabic data and advise plant opera-tions of appropriate actions to take in the event of unanticipated d evelopmen ts.

4.

Mr. Herbein, or in his absence, Mr. Arnold, shall be the only it.dividuals with decision-making authority, i.e.,

the only indivi-duals who may direct the plant operators to take specific action.

.A i

X_ -( / //1A1 s

s RCA:cib R.*C 7 Arnold V

cc:

H. Dieckamp GeneralOperationsMhhhfer)}k C. Miller GPU GPU Eermo Ccrccrm on r; a sucs : ary c' Cercral Pw : U.

es Ccrcom: c r

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It PROPOSED SEOUEfCE FOR ATTAINING, NATURAL CIRCULATION COOLING MODE l

Technical Group Meeting i

1800 4/R i

N

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I, 1.

Train Operating Crews ~

c 4 19 2.

Make connections to feed line for alternate method

[

e of solid cooling of "B" OTSC. ' Sample condensate in% line.

ij 4 29 4 3

Take "3" OTSC solid, including steam and feed piping (existing). Take Sample.

S~ N.

4.

Transfer heat -load to "B" OT3G, shutting down turbine generator I

and "A" OTSG steam paths. ("A" OTSG bottled up')

S 5.

Take "A" OTSG solid and start solid circulation on "A" OTSC.

7 6.

Evaluate putting "B" 015G in solid standby.

7.

% ;1ete DHR system upgrade work (critical path ETC 4/29).

f

((7f 8.

Initiate Natural Circulation.

l I,

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AGENDA Technical Group Meeting 1800 4/24/79 1.

Plant Status after Turbine Trip g.S

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2.

Padioactive Releases 6

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Identification and isolation of sources a.

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b.

Trending at outlet of condenser air ej ec t oc_1...

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c.

Water in gas decay tanks, p

y.,,..,

3.

Status of:

a.

Condensate sample from steam line '

're I,v n r f ecctI 3 ' 2ve in.,.

l b.

Filter replacement - 72, @o',s e

v.-

Auxiliary Building roof ventilation system -

c.

removable stack plug - f an testing 7M-k^g U, d wiB;or l e r,v., g,y d.

EPICOR (Cap-Cun II) Schedules e.

Tank farm in Unit 2. spent fuel pool 7

I f.

Decontamination ef for t s/ status of work on "B" vault -

g.

L'. quid Wante Processing -

h.

Reactor coolant p re s sure /-'ol ume control system -

1.

Piping connections for alternate solid circulation of.

"B" OTSG j.

Procedures for going to solid cooling of OTSC -

k.

Feeding OTSC's using auxiliary feed line up 1.

Check list for liquid waste spills 4.

Vent Header Flow Paths - damage assessment S.

Alternate Pressurizer Level Measurement 6.

Preparations for RCS Sample #5 - etiect on tank farm work S U 'Y

-f 7 (

127 317 O

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ACTION ITEMS Task Management / Schedule Meeting 0900 4/24/79 r.

Action 1.

Make necessary preparations for transition to natural circu-Wilson /

lation.

Inform Plant Staff.

Identify and resolve any new Herbein concerns.

2.

Continue careful monitoring for airborne cesium.

Evaluate Rusche/

ventilation flows and work procedures in Auxiliary Building.

Herbein 3.

Examine vent header system design.

Assuming water and steam Cobean flow into header, what damage would be expected?

4.

Resolve security access problems in Fuel Handling 3uilding.

All Assure that similar problems (access, training, equipment qialification, etc.) are resolvqd quickly.

[

5.

Resolve interface problems between Westinghouse, Plant Herbein/

Operations and Waste Management.

Siaro/

Rusche 6.

Develop check list for actions to be taken after liquid waste Rusche spills.

7.

Decide at '.800 meeting if work can proceed on tank farm Arnold /

while taking RCS Saeple No. 5 (scheduled for 0500 4/25/79).

Herbein/

Hirst 8.

Start feeding both OTSG's using auxiliary feed line up.

Herbein 127 3IB e

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SCHEDULE FOR ATTAINING NATURAL CIRCULATION COOLING MOD _E, 1.

Prepare procedures (to PORC by 1800 hours0.0208 days <br />0.5 hours <br />0.00298 weeks <br />6.849e-4 months <br /> ou 4/25/79) 2.

Train Operating Crews (completed by 4/28/79) 3.

Sample condensate in r:eam lines (4/24/79) 4 Make connections to feed and steam lines for alternate cethod of solid cooling of "B" OTSG (completed by 4/25/79) 5.

Take "B" OTSG solid, including steam and feed piping (existing).

(Day shif *. - 4/29/79) 6.

Transfer heat load to "B" OTSG, shutting down turbine generator and "A" OTSG steam paths -

i.e., "A" OTSG bottled up.

7.

Cc=plete connections to feed and steam lines to "A" OTSG (4/29/79) 8.

Takc

'A" OTSG solid and start solid circulation on "A" OTSG. (4/30/79) 9.

Evaluate putting "B" OTSG in solid stendby. (4/30/79 o 5/1/79) 10.

Complete DHR system upgrade work (4/29/79) 11.

Initiate Natural Circulation (5/2/79) i27 319 9

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AGENDA Technical Group Meeting 1800 4/25/79

-8 1.

Radioactive Releases 5ft /dd% d\\ dy -

i 5 50 kW a.

Trending o tlet of condenser air ejectors -

"p

.tt 9 reason for spike

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6 M b.

Identification and isolation of sources uy% w.

/

1. q a ce l ltg 2.

Status of:

A 34 g

k g. s s-ss. '738 H'"

a.

RCS Sample #5 " "

" 'l " b D

~

O.N" b.

Filter wrapping and storage c.

Auxiliary Building roof ventilation system -

4+ **'" Ok e d b b removable stack plug - fan testing kt".'P *' W W M-.

C c.A 4 Q W-d.

EPICOR (Cap-Gun II)

FoiW c.q,.

.h M Nm Jref.,%:.

it kl e -.-.p e.

Tank Farm in Unit 2 spent fuel pool - schedules pq 5-1 u c< b i

L L-f.

Liquid waste processing u % ~

g.

Reactor coolant pressure / volume control system -

schedules and status of requisitions -<-

g.

Alternate pressurizer level measurement 3.

Schcdule for attalning natural circulation cooling mode:

5 arf a.

Condensate sample f rom steam line and f rom "B" OTSC " &#

b.

Decontamination etforts 3g f Y c.

Procedures for going to solid cooling of OTSG G S G-d.

Proposals and schedules for completing alternate f r *b solid circulation of "B" OISG feedwater connection.

Qg e.

Use of "B" OTSG in steaming or solid mode prior to

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availability of new system f.

Suggested revisions to procedure for initiating natural circulation 127 320 Y

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A G E :: DA Technic 1 Group !!eeting 1800 4/25/79 g4'3G

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1.

Radioactive Releases e

a.

Trending outlet o f condenser air ej ec to'rs -

reason for spike b.

Ider tification and isolation of sources

%..y m.

r 2.

Status of:

A'

~'

4 E.6 M

a.

RCS Sample #5 '

3

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f y.>

h

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l b.

Filter wrapping and storage

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c.

Auxiliary Builoing roof ventilation system -

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removable stack plug - fan testing w

g.

d.

EPICOR (Cap-Cun II)

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e.

Tank Farm in Unit 2 spent f u > l poo l - s ched ule s '>/,, o 't"J ^.

f.

Liquid waste processing

i L Reactor coolant pressure /volu=e control system -

g.

schedules and status of requisitions g.

Alternate pressurizer level measurement 3.

Schedule for attaining natural circulation cooling mode:

C' ka.

Cocdensate sample from steam line and from "C" OTSG b.

Decontamination ef forts

C c.

Procedures for going to solid cooling of OTSG d.

Proposals and schedules for completing alternate solid circulation of "B" OTSC feedwater connections c.

Use of "B" OTSG in steaming or solid mode prior to availability of new system 7"

f.

Suggested revisions to procedure for initiating natural circulation C 5G s,...A*~'

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ACTION ITEMS Management / Schedule !!eet ing 0900 4/25/79 Action _

1.

Ascertain reason for spike on condenser air ejector nonitor.

IIerbein/

Wilson 2.

Take cample f rom "B" 0TSG prior to filling and f rom condensate IIerbein downstream of the main stop valve.

3.

Confirm packaging and storage provisions for removed filters.

IIerbein/

Rusche 4.

Develop schedule for completion of tank I' arm work.

Expedite Ilirs t completion.

5.

Develop revised schedule for long-term pressure volume control liirst/

system.

Cobean 6.

Obtain and r esolve NRC and B&W co:ments on procedures for Wilson solid cooling of OTSG's prior to convening PORC.

7.

Confirm that pressurized sample I;o. 5 taken and shipped to IIerbein E5W.

8.

Verify flow capabilities of temporary piping that bypasses Wilson main feed pumps.

9.

Decide at 1800 meeting on use of "B" steam gene,ra tor..

All m

.' ~

U (10' Turbine not to be restarted until further noticb M.~

lierbein xJ

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No furthe venting of the Pressuriner until Eo

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127 325

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BRc FZ Morning Report 4/25/79 1.

At 1455 yesterday an operator-initiated tu-bine trip occurred because of water impingement in the turbine and steam lines.

The event occurred Current during apprcved testing of the auxiliary feedwater system.

steam flee is through the turbine bypass valves to the condenser.

Primary coolant cold leg tempergtures increased over the subsequent 16 hr. period from 175 F to 222 F and the highest thermocouple reading increased from 270'i to 312 F.

A schedule for rolling the turbine and blewing water out of steam lines is not expected until the morning management meeting.

2.

All charcoal filters were replaced and the

'*B" train in the auxiliary building was placed in service at 0530 this morning.

3.

A primary coolant sample is scheduled to be drawn at approximately 0730.

4.

Following a briefing of the Governor's of fice yesterday, a press conference was held to outline the anticipated schedule for achieving long term cooling status and plant modifications for TMI 2.

5.

The following information is attached:

a.

Latest available system conditions and core map.

b.

NRC envircamental survey results.

c.

Analysis of auxiliary building exhaust. defo,al bb O22C Attachments:

As stated cc:

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4/20/79 ACENDA I

Technical Review Meeting 1800 4/20/79 G

1.

Radioactive Releases f' o^.~ ' Z~-_

~r Levels',.is..fe

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c i, b.

Identification and isolation of sources 1//

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Monitoring

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Status of:

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b.

Alternate pressurizer level measurement * #

M c.

Leakage past DH-V6Bff_'*,f M/3

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f.

Adding deaerated water-cY9g __M2.2/19._U1200Lprimary.__samp.1e d#@" MM r3_yg #M '7 S e 5

h.

In-core TC-direct reading measurements i.

Decontaminati_oJLeffortn -

a xt af..4M f[,,,, /

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1.

Alternate Decay _ Heat Removal Sys tem * *,^ ~S/'6-/6

/~p VAmQ m.

Damage to alternate Auxiliary Building f7'ter system -, e-Awp_

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3.

Natural Circulation Advisory Group jWg a,

Charter b.

Membership ircb ation; tu{ g,c. <-e M A j l

d 4.

Loss of operating RCP (attempt natural Q. try / A,.2 y

,z, p p)3 s ( p:-)

pQjr p

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5.

OTSG operation using auxiliary or main feedwater.

6.

Procedure for volume addition /high pressure injection.

7.

Method for determining that natural circulation has occurred.

8.

Criteria for cut-off of attempt to get on natural circulation

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4/20/79 AC'.' ION ITEMS Tabk Management / Schedule 0900 4/20/79 Action 1.

Review potential neutron sources in an effort to minimize Rusche/

potential personnel evposure.

Herbein 2.

Continue ef forts to return Eberline to service; proceed lierbein with installation of redundant system.

3.

Continue efforts to calibrate IIcise Pressurizer Level.

Wilson /

Herbein/

NRC 4.

Determine scale on Containment Heise Pressure Gauge.

Herbein 5.

Complete installation of Auxiliary Building filters and lierbein activate system.

6.

Continue ef forts to expedite 40" filter replacements.

Rusche/

Herbein 7.

Review necest.ity of security arrangements surrounding spent Herbein fuel pocl effort being tied to Unit 1.

8.

Continue efforts to add deaerated water to RCS.

Herbein 9.

Re-review desirability of pursuing cross-tie between Auxiliary Rasche Building and Containmer. Building ventilation systems.

10.

Develop contingency plaa for opening containment filters to Rusche Auxiliary Building system.

11.

Review ability and desirability to feed OTSG with auxiliary Herbein/

feed pumps.

B&W/

Wilson 127 331 G

e 4/20/79 Action Ite=s Action 12.

Review for clarity current procedures for going to natural Wilson

/

circulation.

13.

Expedite revised procedures for going to natural circulation Wilson and volume addition /high pressure injection.

14.

Evaluate procedure change to revise priority for re-start Wilson attempt in case of loss of operating RCP.

15.

Review B&W recommendation to lift restriction on operations Wilson /

of opposite RC puer.

Arnold 16.

Provide reco=cendel member for natural circulation advisory B;W/

group.

NRC/

Herbein/

Levenson 17.

Develop procedur'. for taking OTSG "A" solid using only installed Wilson equipment.

18.

If radiation levels permit, verify that R.C.

drain tank vent header isolation valve is closed.

B I

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127 332 e

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m. _.......

provided belou are exceeded, adequa te na tural c ircula tion has - ! ~-

not been established.

Criteria (1st attempt) 1.

lict Leg Tempereture A Saturation Tc.peratt.re - 100 (Fi.;ure 1) 0 2.

Ito more than 3 core thernccouples > EC0 F * (Figur 1) 0 3.

o core therracouples > 1000 F *(Ficure 1) 0 4.

At least 6 core therroccuples ( Tsat + 25 F S.

' Indicated hc'at removal frc., actr e S/G within 2 hou. s

~

(if ' TSG downccmer tercerature decreases S F or rare no U

0 heat removal is indica.ted.)

Signcis frcm failed thernccuales cra ir.cred.

A'# crWlw aYnoe o-c Sn CRITERIA (2nd Atterpt) i 1.

Hot leg temperature <.Tsa. (Ficure 1) l 0

/

2.

f;o acre than 3 core thermoccuples ; !CC0 F * ** (Figure 1) 0 3.

!!c core thermocouples712CC F * ** (Figura 1)

Signals from failed thermocouples are ignored.

P.cnitor heat removal from active S/G.

As Icng as

-I appropriate heat removal is indicated, criteria 2 and 3 are not applicable.

5.3.3 If natural circulation is establishcd, reduce RCS pressure (pressurizer temperature) to the maximum extent consistent with plant cor.ditions but not below

~

600 PSIG.

Continue in this mode indefinitely.

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4 4/27/79 AGENDA Management / Schedule Mee ing 0900 4/27/79 1.

Radioac tive Releases - Iden ification and Isolation of Sources 2.

Status of:

a.

EP ICOR (Cap-Gun II) b.

Tank farm in Unit 2 spent fuel pool c.

Reactor coolant pressure / volume control systen d.

Deconca=ination efforts - air compressors e.

Alternate pressurizer level =casurc=ent f.

Revisian to Procedure EP 32 g.

Baron concentration for RCS makeup h.

Feedwater connections for alternate solid circulation of "B" OTSG 3.

Recommendation on whether to place auxiliary roof ventilation system in standby.

4.

Efforts to drain "B" OTSG a.

Sample results from steam lines /0TSG b.

Progress '.:ith draining 4

127 337 O

g

0300 4/27/79 TOP PRIORlTI_ES Development of plan f( r management of radioactivity in A-1 Auxiliary and Contairnent Buildings.

Identify and isolate sources of iodine leakage.

A-1 Complete tank farm in Unit 2 spent _nel pocl.

A-1 Complete roof-top Stack Filtration System A-2 Complete contingency plan for emergency cross-tic A-2 between the Auxiliary Building and Reactor Building Filtration System.

Completion of EPICOR (CAP-GUN II) System.

A-2 Development of plan for treatment of Auxiliary Building B-1 liquid waste.

Cceplete "B" OTSG cooling and modification (long-term).

C-1 Upgrade Decay Heat Re= oval System.

C-1 Complete calibration of alternate pressurizer lecel C-1 transmitter.

Development of alternate system for pressure / volume C-1 ccntrol system.

Provide methods (indications and trends) for dete. mining C-1 that natural circulation has occurred.

Determine suitability of using both steam generators as C-2 heat sinks.

Comp 1' te "A" OTSC cooling modification (long-ters).

C-2 Co=ple-external valve pit for ADHR System.

C-2 CATEGORY A

Control (i.e., containment) of radioactivity in Auxiliary and Containment Buildings.

B Recovery of Auxiliary Building to near normal o pe ra tio ns.

C Place the plant in a cold condition suitable for depressurization with long-term pressure / volume control.

+

127 338

/

e e

0800 4/27,79 ACTION ITEMS Technical Group Meeting 1800 4/^6/79 Action 1.

Plot results of Marinelli beaker samples from Herbein outlet of condenser air ej ector.

2.

Calibrate Eberline at the condenser air ejector Herbein and put it into service.

3.

Continue efforts to drain "B" OTSG.

Hold N3 pressure Herbein under 5 psig.

Try to hold 2 psig.

4.

Sample condensate regularly.

Herbein 5.

Clean up cendensate pump area.

Herbein 6.

Check for leakage at fuel transrer pool lock.

Rusche 7.

Look at getting conpressor to pu=p down vent header.

Rusche 8.

Fix the 1-B Reactor coolant waste evaporator.

Herbein 9.

Put the 1-A Reactor coolant waste evaporator into Herbein service, processing low-level wastes.

10.

Report on preliminary plans for processing high level Rusche liquid waste at 1800 4/27.

11.

Bring pressurizer level to 250" and maintain this Herbein level.

12.

Centinue to take pressurizer level rerdings using the Wilson Deadweight tester with tl.e level at 250".

13.

Degas RCS by using Pressurizer sprays / heaters.

Vent Herbein every shift.

14.

Plan on taking RCS Sample #6 at 0500 5/1/79 so the Herbein results will be available before the initiation of natural circulation.

A i

127 339 W

e

0800 4/27/79 PLA'iT CPERATION STAFF l Expected Task j sk Description Priar-ec pletion Status Coord.

1.

Obr.ain RCS sa=ple.

,c-1 d6 0500, Thorpe /

5/01 Hetrick 2.

PZR Heise and diff. pressure C-1 Recalibrating k'ilson/

gage.

Broughton 3.

Obtain MEC approval.

C-1 Need ECM's 56, Porter /

109, 132, 133, F ulkner 15 152, 154, 15 4.

SSRW pumps.

C-1 "A"-In Parts 4/27/79 Service "B"-Available "C"-Under Repair 5.

Make calculation of RAD C-1 Tom Cri = ins Cobean/

levels that will occur in to define Gunn cond. Demins - if we circulate shielding and clean "B" OTSG.

requirements.

Prepare instructions for-loss C-1 4/27 In progress.

Floyd of gland steam to turbine.

7.

Be prepared to run Existing B C-1 Expect to Toole Decay Heat Pump on Recire.

run 4/28 8.

A.

Sample "B":

OTSC for total C-1 Hopkins/

activity.

Hetrick B.

Take a OTSG sanple.

4/27 In progress.

9.

Miller /Toole make schedule C-1 Miller /

for OTSG to r pport natural Toole circulation.

10.

Isolate l' nit #1 and Unit #2 Herrick/

Sample Stations.

Seelinger 11.

Review tie in to stack for A3 Gunn/

H&V.

Toole/

Thorpe 12.

Decision is needed on whether Reg'd 1300, Herbein

~

or not "B" OTSG is to be used.

4/25 PORC approve Procedures 87 and 4/27 Resolve Kunder/

110. (Natural Circ.)

cc =ents Morrel 127 34 0 e

PLANT OPERATION STAFF Expected Task Task Description Priority Comoletion Status Coord.

14.

Repair 10 secondary plant leaks In progress.

Cleaning up Shovlin/

and top up water.

around con-Kunder densate pumps.

15.

Get sec. plant sump levels Kunder down.

16.

Drain OSTG "B" and cove ;ater Kunder to Unit ill. Process through CAP-GUN I.

17.

Open OSTG "B" drains to Kunder condenser.

18.

Install new rad monitor on

'a' eave r /

vacuum punp exhaust.

(Take Kunder one from roof and put on same point as HP-R748.

19.

Fix the 1-B Reactor coolant waste evaporator I

(lA in service) 20.

Degas RCS by using PZR sprays /

heaters; vent every shift.

l l

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PLANT MODIFICATIONS Expected Task

.ask De sc r ip t i on Priority Compp. tion Statur.

Coord.

WG-2 Decon. water in AB using EPICOR A-1 Turn over Rela, inst.

Cobean (L-1) ion exchange process.

for test 5/5.

process, een-Operational tilation, fire 5/11.

svc, Demin water, serv.

air power-Need EDI 36 & 39.

WG-6 Install storage vessels in Fuel A-1 Schedule to UELC to relocatt Cobean/

(L-2)

Pool "A".

be issued.

their equipment.

Gunn WC-1 Install AB/FHB Filter system.

A-2 Units 1 and 2-Build ing com -

Gunn/

MEC install high noise level (tested) plete by 5/24.

Thorpe /

signs.

Units 3 and 4-Bachofer 5/1 WG-16 Provide cap for Aux. Building A-2 Turn over for Gunn stack.

test 4/27 TS-3C Develop complete package for C-1 Inatal. comp.

Equip, avail.

Wilson /

long-term cooling of OTSG "B".

5/8 5/2 Cobean Use Unit '/2 Demins f o r 1.ont;-

term system.

TS-3D Develop "A" OTSG 1ong-term Lay-C-1 4/29 GAI [lan to be Gunn issued.

up.

'TS-10 Install 2/2500 kw diesel genera-C-1 Run on 5/2 Instal. cocp.

Cobean/

tors - check shipping damage -

4/20 Gunn/

vendor.

Run diesel, fill fuel Toole sy tem.

TS-ll Develop electrical distribution C-1 Turn over for Instal, co=p.

Cobean system - 13.2 KV line.

test 4/30.

4/20 Run on 5/5.

TS-6B Design / install make-up system C-1 Turn over for Equip. avail.

Stiller /

for RCS.

test 5/5 4/28 (Sch< d'ile Lilly being revised)

TS-6C Evaluate letdown capabilities C-1 To be scl.

uled for mod. to RCS.

TS-6 RC Loop passive pressure control C-2 Need design Gunn system.

from B&R.

TS-14 Shield for decay heat pump.

C-2 Installation to Wilson be scheduled by 4/30.

127 342

(Cont.) '

0800 4/27/79 PLANT MODIFICATIONS Expected Task task Description Priority Comoletion Status Coord.

TS-15 DH recoval system by W.

Preliminary to be detailed with W.

WC-ll Provide and install water Schedule to be Lacy /

chemistry laboratory for use developed Fricke in conjunction with WG-2.

4/26/79 Open two holes for RB purge to Seelinger be used for AB air cleaning. -

Should we save for RX Bldg.

cleanup?

B&R put together set of flow Have by 4/26.

Toole/B5R prints.

i e

127 3 43 e

9

vvvv WASTE MANAGDIEITT GROUP Expected Task iask Description Priority Comoletion

_ Jtatus Coord.

G-5 Set-up to change AS/FH Bldg.

A-1 On hold AB "A" In Shovlin/

vent. filters.

(Radiat ion Service Sachofer levels)

"B" In Progress FHB "A" In Service L-5 Caustic spraying of Aux. Bldg.

A-1 Continue adding

< raft /

areas and surp.

to su=p.

Seelinger L-33 Develop plan for tying in tank

/-l In progress.

Snyder farm to CAP-GUN "2".

Investigating secondary tie to

k farm Begin Waste Gas Progrns to Seelinger determine location of leak.

Develop plan for canagement i

Seelinger of decontamination of radio-activity in Aux. & Cont. Bldgs.

t Get RB Bldg. gas sample.

Miller

~

Check possibility of deter-Levy /

mining contain=ent su=p level Industrial by _easuring radiation at Advisory contain=e-.t wall.

Group

~

1 m

e e

0800 4/27/79

~

TECHNICAL SUPPORT Expected Task iask Descriotion Priority Comoletion Status Coord.

LS-2 Tech Spec. deletions, changes, 0-1 5/1 Issue 5/1/79; Harding and additions for long-ters NRC inter-(S tair) cooling.

actions under negotiation.

TM-35 Establish long-tern plant C-1 4/27 Croneberge/

instrumentation requirements.

Chisholm AA-61 Updated safety anslysis report C-1 No Status Review Report 35 'n' (B&W).

EP-32 Loss of all FTP's and natural C-1 4/27 Revising cire. available.

12 545 l

l G

e

Task Tash Descrintig3 Priobity St tun /D2te Due Coord._

IIo te I.B.1 Deconto-i nte fcr DIE Syc.

checkout engoing Si2re 1

1 Cc plete D3 Valve Roon 4/ 28 I.B.2 Install Atuc Building TV 1

Monitor Systen In prcgress I.B.4 Install DIE re=ote ops equip.

1 Ongoing / 4/29 2

I.B.5 Dia flou/precoure tests 1

After decon II.A.1 ADim (neu) sys design &

1 dngoing/ M29 approval II.A.1 ADia final test procedure 1

Ongo.Lv II.A.1 Final ADIB Installation precedure 1

Ongoing / M27

.I.A.2 dim Procurc===t 1

Ongoirqt 3

II.B AD!m Installation 1'

Ongo W Licensing Report 1

Fernal Submittal 4/27" Notes:

1.

First pass en DBR valve recs decen ccepleted.

Activity reduced frca 1R to 180 Mt 2.

Work in progress. Progress slowed by less of one co= pressor in the air st:pply.

3 Intericr piping delivered en site. dim skid inspection due M27/79... ship

],~~shortlythereafter.

?

4.

Excave. tion ec=pleted.

Coro drilling vill replace use of c2;71ance based on pre 14 4-n"y test results.

Vall penntratien dolayed to M30 start as a result of lac decisc.cn to go with Coro D:* m ns.

s.

127 346 e

4 e

e

UdVU 9 / J i / / '>

INDUSTRIAL ADVISORY GROUP Expected Task tank Description Priority Completion Status Coord.

1.

Determine method of finding 1+

Comp. 4/26 Close out meno Lawborski leak in vent header.

IA 1 2.

Provide reconnendation for 1

In pro);ress Ackerman alternate methods of P/V control 11.

Instrument diagnostics.

1 Continous Ackerman 18.

Risks / Advantages of going to 1

Comp. 4/24 IA 18 Paddlefor Natural Circulation as is vs.

I'c e h a t Plan.

29 Instrument a.

12 selected TC's on 1

In progress Stroupe recorder or computer.

b.

TH & TC on recorder.

1 In progress Stroupe 26.

Review of Natural Circulation a.

Loss of pump.

1 Comp. 4/26 IA 26A Levy

{

b.

Instr. list.

1 Comp. 4/25, IA 26B Levy c.

Control of mass volume.

1 In progress Levy d.

Review and recommend 1

In progress Levy criteria for natural circulation.

e.

Verification of natural 1

Comp. 4/26 IA 26E Levy

-irculation shrink.

20.

Eval.uate various alternatives 1

Not started Lawborski to decontaminate plant; long-term.

31.

Alternate pressurized level 1

Stroup procedure for comment.

33.

Evaluate pressurizer 1

In progress Kelly volume contro' option w/o level instr. using make-up tank.

34.

Evaluate core significance 1

In progress Zebronki/

of ex-cure upper-lower ratio.

Ackerman 127 3 47 e

(Capt.)

0800 4/27/79 I'.'DUSTRIAL ADVISORY GRCUP Expected Task iask Description Priority Comoletion Status Coord.

12.

Specifications for Reflux Boiler Test a.

Feasibility 2

In typing Fornandon b.

Specific parameter 2

In typing Forr.ando:

13.

k'ater Level / Reactor P/V a.

Short-ter:

2 In progress Ackerman b.

Long-ters 2

In progress Ackerman 14.

Model for boron / gas in pri=ary 2

Being written Koler system.

19.

Time to core =elt with no 2

Not started Fornando:

external cooling and removal through flooding of containment.

22.

Plant Mod - piping and equipment, 2

In progresa Lawborski Convective r mulation of 2

Corp. 4/25 LA 32 Kolar cold shutdown.

I 127 348 4

6 e

g Morning Report - 4/27/79 1.

The full-range level monitor for OTSG "A" failed during the night.

A summary of OTSG level instrumentation is listed below:

RANGE OTSG"A" OTSG"B" Start Up Upscale Failec Full Failed Failed Operating Range 1 Failed 1 Failed 1 Erratic

1 Operable

Doesn't correlate with strip-chart indicator attached to OTSG"A" for tren ling purposes.

2.

Pressurizer level (LT-3) monitor was erratic between 0030 and 0130 then returned to normal.

Similar activity was exhibited by other pressurizer level indicators prior to failure.

3.

Plant conditions stable:

- Reactor coolant cold leg temperature approximately 223 F.

- Highest thermocouple reading:

310 F.

4.

The following information is attached:

a.

Latest available system conditions and core maps.

b.

NRC environmental survey results.

Analysis of auxiliary buiiding exhaust.

c.

d.

Hourly HPR-219 readings.

Attachments:

As State 1 cc:

V. Stello R. Vollmer R. Engelken J. Collins J. Olshinski NRC Trailer #2 127 349 d

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[ A = 22 3 f 127 350 LOCATION OF FUEL ASSEMBLIES CONTAIN!NG BURNABLE POISON RODS THREE MILE LSLAND NUCLEAR STATION UNIT 2 FIGURE 4 3-2 O

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NRC AIR Si&'7LES summary of the air sample data for the 24 -h ou r pe ri od Fo110wi g is a of C '

1 (., 1979.

Loc a ti on Sample Time cfm Activity pCi/ml V+ 1n~5 ;y4 s,L Goldt!coro O t W-o z i c, r, 2

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_A _G_.E_ _N_ _D_ _A_

Technical Group Meeting 1800 4/28/79 I.

Radioactive Releases - Status ng Co.. /c -,

H 3 317" e < /.- '

I k'.

2 'i i d r /,4 II.

Construction Status (Exception - Reporting)

N'a'*'

A.

EPICOR II (Cap-Cun II)- S"

E.

Tank Farm - Spent Fuel Pool - Als 6.T 4

~

)

s C.

Reactor Coolant Pressure /Voluce Control

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Alternate System for Solid Circulation of OISC's - Q;.(g E.

Auxiliary Building \\ Roof Vent. ilation Sy s tcs --

r%

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III.

Plant Status A.

RCS Profile IV.

Inve.itigation of Possible Ductwork Collapsc on Loss of AC Power 127 353

-ame

m ACTION ITFMS Management / Schedule Meeting 0900 4/28/79 Action 1.

Upgrade monitoring c,f roof ventilation system.

Additional Wil:>on Eberline Monitor to be located on each discharge duct of AB Roof Ventilation System.

2.

Locate IJ000 nitrogen gas valve for pressure / volume control Canter system.

3.

Consider alternate isolation methods for id ntifying leakage All sources for Auxiliary Building.

4.

Determine variables which will ccaaence 30-hour time period Ack tuan/

Jilson to go solid in pre;surizer.

5.

Evaluation of ;ignificance of sodium in RCS.

Kulynych 6.

Ex-core ion chamber readings.

Ackerman 7.

Analysis of:

A.

Present natural circulation conditions Wilson /NRC B.

Ilow to obtain natural circulation on "B" OTSG Levy /Kulynych C.

Condition of flashing acre bypass D.

Dynamics of switching between solid and steaming modes of operation 8.

Modification of EP-32 for the loss of Natural Circulation in Wilson "A" Loop.

9.

Determine alert levels for plant parameters for potential loss Wilron of Natural Circulation.

10.

Evaluate area below Containment Building for high level Rusche waste area.

11.

Insure that seal injection valves are shut for non-running flerbein RC pumps.

127 354 e

s

4/29/79 AGENDA Technical Group Meeting 1800 4/29/79 1.

Radioactive Releases 2<,ic' r8,

',h e

3 e

,a-2.,1

<. _..w u

2.

Plant Status 3.

Natural Circulation Heat Balarce 4

s

[

4.

Notification Levels for Various Plant Conditions While on p,

Natural Circulation 7

,,y N

S.

Construction Status:

(Exception - Reports) a.

EPICOR (CA.P-GUN II) - b- -

'A } *"

}

b.

Tank farm in Unit 2 Spent Fuel Pool-2 i

-+

4.-

c.

Reactor Coolant Pressure / Volume Control System m

w 1.- - s, e c.

~

i 1.

Any items which inpact schedule?

z.

N's'.~'d.

Alternate Decay Heat.lenoval System L ' '. A1 A'*

?'

.; <y,,,

,g,

<, t' e.

DHR Upgrade -- - - -

e

~ ' - " ~

,u, f.

Alternate system for solid circulation of OTSG's j

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g.

Auxiliary Building Roof Ventilation System c, >,';,,,,,,, y;,j,.'-

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3" $ C 1.

Additional frarae for isolation capability

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4 en e

4/29/79 ACTION ITEMS Management / Schedule Meeting 0900 4/29/79 Action 1.

Evaluate Control Room C11culations utilized to determine Herbein/

pressurizer level.

Wilson 2.

Conduct heat balances of the RC System to determine heat Wilson being removed by "A" OTSG including make-up operations and possible effects on natural circulation.

3.

Review potential changes to P/V System and potential Cobean impact on completion date.

No changes are to be incor-porated which delay schedule without approval.

4.

ivaluate alternate steam line connection for "A" OTSC.

Wilson /

Hold tieing in at present location.

Gunn j.

Evaluate draining of "B" OTSG and refilling with heated Wilson i

cater.

6-Continue with fabrication of angle iron frame for isola-Gunn/

tion capability between stack and dacpers in inlet of Cobean Auxiliary Building ventilation system.

Do not install until i= pact on schedule is known and approval obtained.

7.

Investigate partial transfer of P/V Control System work Cobean/

within Auxiliary Building from BLR to Westinghouse.

Gunn/

Siano 0

Main ain EH greater than 7.5 per B&W recommendation te Herbein elimit. ate any pctential problems due to sodium.

127 356 O

m_.g:

ir TECilNICAL FIEETING

' i. -

1800 4/30/79 1.

Radioactive releases a) Vacuum draw on auxiliary building ventheader and drain system -

2.w

.7,m-2.

Plant status - natural circulation a)

RCS profile b)

Discuss plant systems that can be 2ecared 3.

Analytical:

a)

Feed flow necessary to maintain RCS temperaturos while flashing b) Stiaiman secondary water flow necessary to maintain tatural circulation while in solid secondary circulation 4.

Containment sump level indication a)

Failures which indicate level b) Critical valves 5.

Construction status

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5y C.'..,

A a)

Epicor (Cap-Gun II) - L. s 1 -,

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e eu-b) Tank farm in Unit 2 spent fuel pool-L.

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c) Alternate system for solid circulation of OTSG's L-1..

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4

'-d)

Auxiliary building roof ventilation system-yd*

s,

}'

s-,<

e)

Reactor coolant pressure / volume control - L -

- ~/s

(..

y,'...

g f) DHR upgrade i.-

.w.

v.-

e

~ ~ ~

u,

.e, g) Alternate decay heat removal system. 3

,4 m, _- (, c, o...

.s

,s 6.

Identify options for decay heat removal.

Reco =endation for continuing int,ta11ation of alternate system for solid circulation of

.he OTSG 127 357 7.

RCS sample d6 0 0500 5/1/79

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noiiva immw MANAGEMENT MEETING C-

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0900 4/30/79 n....

_ ACTION l.

Verify that air flow can be induced through the drains ir Herbein the auxiliary building and check for iodine 2.

Draw a vacuum on the vent imader Herbein 3.

Place an air monitor on the inlet to the ventilation system Herbein in the auxiliary building 4.

Develop c plot trending the hottest in-core thermocouple Levy readings 5.

Calculate the shrinkage that would occur in the R.C.

System Wilson if a R.C. pump was started while in the natural circulation mode 6.

Derelop alternate procedure (EP-32A) for re-establishing Wilson natural circulation if lost in "A" loop 7.

Establish lower UDTT limit for R.C.

System and a lower Kulynych/

((100 F temperature) limit for the BWST Wilson 8.

Resolve filter / receiver and calibration source problems Herbein for NMC monitors in ventilation syrtem on roof af auxiliary building s

9.

Recommend what water should be stored in the tank farm in Rusche Unit #2 spent fuel pool 10.

Commence draining "B" OTSG slowly utilizing a maximum of Herbein 25 psig nitrogen pressure cover gas in the generator 11.

Evaluate existence of pipe tie-in locations for connecting Cobean disposable domineralizers in "B" OSTG Hirst /

12.

Translate TMI priorities to Kellog-Pullman Cobean "B" OTSG Long Term P/V Control DHRS before "A" OTSG Long Term 13.

Take R.C. S. Sample 05 at 0500 5/1/79 Herbein 127 358 d

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MORNING REPORT ! /30/79 y{p 1.

DHR Upgrade - TV cameras installed and operable; accelerometers on pumps being installed.

2.

Auxiliary building supplemental filter train - calibration of monitors about finished.

Installation of frame and plate for isolation capability and connection to existing train expected shortly.

3.

Auxiliary building flow paths - supply fans and additional exhaust fans will be started to atte=pt to reduce airborne iodine levels (while still maintaining negative building pressure).

4.

Containment water level - new estimated at 5% feet (425,000 gallonr).

Source is leakage from comparent cooling system and safety valves and venting losses from the pressurizer.

5.

Sump pumps -

.>th sump pumps inside containment are inoperable.

Some other means will have to be found to remove sump water for cleanup.

6.

Tar.k f arm in fuel pool - tanks in place; welding of piping continuing.

7.

Heat balance by B&W; 4/29/79:

Core Decay Heat

1. 7 FM Pressurizer Heaters

0. 3 FM Loss in Letdown

0. 22 FM Loss to Containment Air G.05 MW Loss Due to Piping Underwater 0.1 MW l

Loss from Safety Valve Leakage 0.3 EW 2.0 FM

0. 67 FM Calculated Removal by A Sta.

Gen.

1. 3 FM 8.

The following attachments are included:

a.

Latest available system conditions and core map.

b.

Hourly HPR -219 data.

c.

Instrument Operability Status d.

System / component noerability status e.

hTC environmental data f,

B&W heat balance Attachments:

As Stated cc:

R. Vollmer W. Mills B. Grimes J. Murphy R. Engelken Trailer #2 J. Collins 127 359 4

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Gg, ist*f 127 361 LOCATION OF FUEL ASSEMBLIES CON 1..NING BUP.H A B L E PO!50H RODS T}4REE MILE LSLAND NUCLEAR 5'T ATiON UNIT 2 -

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. Containment Spray (2 t. ains)

O containment Fan Cool ers (5 Coolers)

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