Text

Intervenor Exhibit I-TMIA-13,consisting of Rev 0 to Instructor Notes 11.2.01.152, TMI-II Accident, Dtd 1981
	ML20136H444
Person / Time
Site:	Crane
Issue date:	11/19/1984
From:	; AFFILIATION NOT ASSIGNED
To:	;
References
	SP-I-TMIA-013, SP-I-TMIA-13, NUDOCS 8508200323
	Download: ML20136H444 (6)
	v • d • e

)

11.2.01.152

^

" " ~ ' -

Dhn

///~j f7/p h #"

, Revision 0 i

00/00/81 INSTRUCTOR NOTES I.

TITLE:

TMI II Accident

$$Ic II.

LESSON OBJECTIVES

'85 A!G -7 P2 :36 A.

To review the TMI II Accident with operations personneltoensureanunderstanhYoh[(dhNbkbIl BRANCH major factors which led to or aggravated the seriousness of the accident.

B.

To review with operations personnel the thermal and hydraulic behavior of the primary system and the secondary side of the OTSG's during the accident.

(

III.

REFEREE ES g

A.

NUREG 0600 " Investigation into the March 28, N

$ b R

\\

i4 1979, Three Mile Island Accident by Office of ga,,gge Inspection and Enforcement."

s 3

a5@

eI l

15 *

8E) 8.

NSAC-1 " Analysis of Three Mile Island - Unit II

hh k

Accident." (EPRI)

{

T

\\'

f

$A C.

LER 79-014/0IL-0 Final Report.

D.

Preliminary'Annotaded Sequence of Events, March k*l.

ysa 28, 1979.

A 3

!I kI IV.

MATERIAL REQUIRED i

A.

Handouts 1.

Lesson Plan 2.

System Parameter Plots 3.

NSAC-1 J

B.

Supplies-8508200323 841119 PDR ADOCK 05000289 O

PDR C

T Revision 0 00/00/81 11.2.01.152 INSTRUCTOR NOTES 6 hr 10 min

10. CR evacuated due to high airborne.

6 hr 14 min

11. 'A' OTSG level raised from 87% to 100%.

BWST still being injected.

RB sump 6' (max indication) BWST 37'.

At this point it is known that loops are voiding but thought core was covered.

7 hrs

12. Pressure being controlled approx. 2000 psig with PORY block.

Shifted to PZR vent valve to avoid block valve failure.

TP-23 (6 hr) 7 hr 11 min

13. Incore T/C's indicating off scale.

7 hr 16 min

14. A OTSG pressure 1 psig 287 F U

B OTSG pressure 302 psig 415 F Cooling Thru PORY 7 hr 20 min

15. Controlling RCS pressure 1900 - 2100 using U

PORV block. PZR temp. 345 F.

E.

Phase V 7:30 - 10:45 PORV open to PORY block closed.

7 hr 30 min 1.

Comence depressurization to float on CF and eventually to go on OHR.

Fig. 5 RCS press T appmx. 620 T U

H C approx. 220 F Concern over BWST U

PZR approx. 350 F = to temp. out of core, _

T Revision 0 00/00/81 11.2.01.152 INSTRUCTOR NOTES level. Attempt to avoid recire.

RB pressure increase.2 psig to 2.5 during depressurization.

7 hr 42 min 2.

ES bypassed to prevent ES actuation during depressurization (approx. 1735 psig.).

7 hr 50 min 3.

PZR level steady at 400".

At approx. 1400 psig block is closed and vent used to continue depressurization.

8 hrs 4.

PZR surge line temp increasing indicating TP-11 flow of expanding gas in hot leg out PZR.

8 hr 12 min 5.

RCS 800 psig._

8 hr 25 min 6.

618 - 640 psig 350 F PZR temp 8 hr 40 min 7.

Incore T/C's 322 F to 635 F.

Most 0

0 offscale.

8 hr 41 min 8.

600 psig RCS pressure.

approx. 9 hrs 9.

Secured atmosphere dumps (approx. 5 hours5.787037e-5 days <br />0.00139 hours <br />8.267196e-6 weeks <br />1.9025e-6 months <br />).

9 hr 10 min

10. RCS pressure approx. 450 psig and could not reduce it further.

9 hr 17 min

11. CF tanks indicate discharging.

approx. 2670 gal.

RB press 2.6 psig and decreasing.

from CF PZR level 400".

SR slowly increasing.

o j

's Revision 0 00/00/81 INSTRUCTOR NOTES 11.2.01.152 9 hr 50 min 12.'28# spike in RB Fig. 45 ES actuation BS actuation - 6 minute run W I ptmp 1 C stopped 1A in pull-to-lock 1 8 running 9 hr 57 min

13. CF tank level oscillating (only on 'A' CFT)

MU flow increased RCS pressure increasing to approx. 560 psig.

PZR heating at 0

approx. 3 F/hr 10 hr 28 min

14. Rapid drop in 'A' loop TH (less than 620 F).

PZR level dropped from 400-380".

TH-18 Bubble reformed in the PZR.

IP-12

'A' OTSG pressure begins to increase.

10 hr 32 min

15. WI pump IC started IB & 1C running 10 hr 35 min

16. W I pump 1C stopped.

10 hr 36 min

17. Pressure maintained approx. 418 psig. in RCS

~10 hr 45 min

18. 'A'. loop T offscale high then back on H

scale.

F.

Phase VI 11:08 - 16:00 PORV Block closed to Forced Cire.

1108 PORV Block 1.

PZR level decreasing from 400" to 180".

closed.

(180" S 11 hr 24 min) due to bubble in PZR &

y system depress.

Figura 51 TMI-2 Loss of Coolant Accklent 3/28/79 Reactor BuNding Temperature and Pressure 180 i

l Reactor Building Terr crature - Point 13 180 g

i

\\

i

140 g

1' I

E r

N

]

$ 120 B

l l

y Max Reactor Building Pressure - 28 PSIG' 26

~

F_

20 j

[

g i

- 15g t-100 d

D

)

10 80 o

I I

-s 80

-1 0

1 2

3 4

5 8

7 8

9 to 11 12 13 14 16 18 17 18 19 20 j

Time efter Turbine Trip - Hours i

l'

,)\\

6

)

1 t

2-

)

t q1 l

)

e l

4 e

r 5

e)))6) r W eeS14t

..dRR8a I

T ii t

'P SSSnnnS mma.

A.

9. ' {

(.t uum e e l l l R.

eeeooe 4

~

essCCCS t((((((

I 1

s k. '3 '4 '0 '0 '0 1

a3 1

q../, e, /.

5 s552311 T

0 T333333 e.

5 T

n......

1 A ivvvvvv h.

/

C aeeeeee O

rilllll L

DsEEEEE 2

[>

~.

i 1

.1

.R lni1111 eit3456 p.

g

?

.\\ '. '-

I

\\.

^., i v

s g

/e 0

r u

'yvx_

,l I

1 o

N

,g, -

H p

I

x' t i

r T

s e

c.,,,5,'

8 n

/

I i

9 i

b r

7 w

9 Tu 2

s

/,,.

o

/

i I

8 r

r r,

p e

j t

/

i f

3r r

.Lq\\

y 6

A e

e f

I td f.,

n..,44.!:'

\\

e nr

\\.

eo m

dc i

ie

./

T I

ccR5

/

2

/

f Ae

[',#-

bb rl t ue 4

I nt n l

, - )}.

aae J

n.

l roeP op, y,Q' t-C m7 I

1 f e oT 0 s.%N:~,Yd\\n\\r o

g 5

sg-i 2

I 2s nR

'[

P oiT 5 Ld lM i

a2u r

Y i

I uIB-1,>

((.

s gMxH iFTRA O

0 0

8 6

4 2

0 8

1 1

1 u i.$' o ll1

ML20136H444

Text

Navigation menu

Search