ML20009F127

From kanterella
Jump to navigation Jump to search
Requests Info Re Unresolved Safety Issue A-44,station Blackout.Questionnaire & LER Documentation Encl
ML20009F127
Person / Time
Site: Haddam Neck File:Connecticut Yankee Atomic Power Co icon.png
Issue date: 07/20/1981
From: Crutchfield D
Office of Nuclear Reactor Regulation
To: Counsil W
CONNECTICUT YANKEE ATOMIC POWER CO.
Shared Package
ML20009F128 List:
References
REF-GTECI-A-44, REF-GTECI-EL, TASK-A-44, TASK-OR LSO5-81-07-054, LSO5-81-7-54, NUDOCS 8107290234
Download: ML20009F127 (16)
v • d • e


Text

..

s

_w i

N E

-.h Docket No. 50-213 JULY 28W LS05-81007-054 t

o ON7 %

Hr. W. G. Counsil Vice President 5.

Nuclear Engineering and Operations f

W Connecticut Yankee Atomic power Company j

j Post Office Box 270 Martford, Connecticut 06103

Dear ifr. Counsil:

t

Subject:

Information Request Regarding 5tation Blackout. Unresolved l

Safety Issue A-44, Haddam Neck l

The NRC staff is currently addressing Unresolved Safety Issue (USI)

A-44, Station Blackout. The purpose of this work is to establish the i

safety significance of an event resulting in a loss of all alternating current power and, if significant, to consider the need for any specific changes. Over the past several years information requests have been 4

j forwarded which requested infomation that is being used in the USI i

analysis. Your interest and cooperation in the past have been appreciated.

At this time the USI A-44 effort is being directed toward detemining t

the reliability of the onsite standby diesel generators. The enclosed questionnaire has been prepared to provide accurate operating experience to serve as a basis for such a determination, tbre specifically, its purpose is to obtain more detailed data than were available in previous diesel generator studies such as AEC-00E-ES-002, HUREG/CR-0660, and NUREG/CR-1362.

The questionnaire (enclosure 1) requests information in tabular form and solicits data for the years 1976 through 1980, inclusive. There are i

four tables enclosed:

(1) Diesel Generator Operations Data, (2) Diesel I

r.enerator scheduled Down Time Record, (3) Diesel Generator Unscheduled l

Down Time Record, and (4) Onsite Emergency Diesel Generator and Auxiliary Equipment Modification Record. Also enclosed are examples of completed tables as well as a clarification of what should be entered. please note that, although it may appear that only Licensee Event Report (LER) information is sought, data on all diesel generator malfunctions, independent of whether an LER was prepared, is requested.

Please find enclosed LER documentation (enclosure 2) presently docketed j

for your facility. You are requested to review these and to indicate if i

there are other reports which have not been enclosed. Finally, please j

find enclosed a copy of the appropriate portions of your response (eaclosure 8107290234 G10720 I

PDR ADOCK 05000213 F

PDR

[

omcep sunaA l

oan >

ne ronu a po#3 uncu ao OFFIClAL RECORD COPY uscro.ini-m,.

~t f

(

^

fir. W. G. Counsil July t # ign

3) to our letter of furch 6,1978 which requested related, but different, informatior. This is being forwarded for your information only and should aid in prepving Tables 1 through 4.

In consideration of the time Sad effort necessary to obtain this information, the completion of Table 4 should be considered voluntary. However, it should be noted that if operational and hardware modifications are not identified, the positive or negative influence of these features on energency alternating current power reliability may be lost in the evaluation of the data. The expected effect is that our generic reliability estimtes may be lower than that which actually exists.

The above information is requested in accordance with Sections 103.b.(3) and 161.c of the Atomic Energy Act of 1954, as amended. To meet our schedule requirements for the resolution of USI A-44 and to incorporate as much real expericnce as possible into the reliability model for l

energency power systems, it is requested that your re? conte be provided within 120 days of the receipt of this letter. However, if this schedule is inconsistent wM.h priority recuirements for other licensing work, please provide us with your proposed date of response within 30 days.

e We plan to comlete our analysis of this data by February 1982 Your data should be provided by that time so that an accurate assessment of onsite alternating current power sourcas can be made.

l

.Mr. P. Baranowsky has been designated Task !?anager for USI A-44.

Should you have any questions, please feel free to contact hin at (301) 443-5921. Your time and efforts are appreciated.

DISTRIBUTION Docket. File 50-213 D. Crutchfield Sincerely,

/

NRC & Local PDRs R. Caruso

'f odrinal signed g ' h,9un [.

TERA OELD GIB Reading I&E (3) 8 126 ORB #5 Reading ACRS (16)

D. Eisenhut K. Kniel nnis it. Crutchfield, Chief R. Purple P. Norian crating Reactors Branch 35 G. Lainas H. Smith i

Division of 1.icensing J. Roe F. Schroeder

/

Enclosures:

T. Murley As Stated P. Baranowsky J. Butts cc: w/ enclosures See next page l

?

This request for information was approved by the Office of fianagement and Budget under clearance number 3150-0067 which expires !!ay 31, 1983.

i Coments on burden and duplication may be directed to the Office of i

Management and Budget, Washington, D. C.

20503.

s < !I fDL:0RB#2

'plDRBf5 DLgR#;5 DSTgI)iAndt

.3 Polk

[ N h ? h,MCrutch feld f.

omcep

..PfAr.

omy

. 01/l.]lS1...

. 0111.11B.1... 01M1.%..

.01 8 ?l.61 NGC FORM M 00 8G NRCM Cm OFFIClAL RECORD COPY uwo.1-3ueso

7._.._.,_

Mr. W. G. Counsil

- 3. -

July 20, 1981 cc w/ enclosures:

Day, Berry & Howarti Counselors at Law One Constitution Plaza Hartford, Connecticut 06101 SupaM ntendent Haddam Neck Plant RFU fi Post Office Box 127E East Hancton, Connecticut 06424 Mr. James R. HitnelwM ght Northeast Utilities Service Concany P. O. Box 270 Hartford, Connecticut 06101 Russell Library 119 Broad Street Middletown, Connecticut 06457 3 card of Selectmen Tcwn Hall Haddam, Connecticut 06101 Connecticut Energy Agency ATTN: Ass ~istant Director Research and Policy Development Department of Planning and Energy Policy 20 Grand Street Hartford, Connecticut 06106 U. S. Environmental Protection Ager.cy Region I Office ATTN: EIS C00RDINATOR JFK Federal Building 3cston, Massacnusetts 02203 Resident Inscector Haddam Neck Nuclear Pcwer Station c/o U. S. NRC East Hadcam Post Office East Haddam, Connecticut 06423 l

l i

I

lj t*

lv j '

i t

t

)

1 e

l I

ba 3

T gc r

P ao r

es l R E.

1 l

e a1 am F

ra.

d uC7 f e s C ol i

ot c

l ns na cai ot nl u i t Elp t a aco i t f

i r t e nt e e dH i(

nre uor Rfu l

f pi ooa t F nS 1

o H

i eI t r e aol o

rf c t

ue n a.

DDE p

p

(

n p

o t

}

ngW i

t9 enK a1 ci(

r rJ er emI M

pa P mI C e I

r e

Y or r

c t a

e. f r

ed u

l r n mi ol ee u

i nl H

a e a F

GC ts r

s e

e t

e bf r t

moa p

u t

H S

G o bi t de r

l a

u e

s d

T t

e s

5 li d

d e

c n n

T au 'q ar

)

U E

G k

e mo s e D&

R ef up tu

,f D

oy A

r o c t

eT T

on e

l o n

f on p

an a y t o S

u g

l f nti t ap l i oet i

A rt c e cr{

ec sr a t

aer c

as n p epu e

t e iS ROD T

X ST H(

I

r j

10

(*

i N

2 4

A.

I I

N I

w 4.

e 2 Z' -

e H

C 3 m U

m Ca S

U th

  • L
  • C C

O =h 3 G

M

L P

W 8

=L

=

2c at 3 a

~3 3

"ik aM I

w 1'

32 r

g w

  • 3 I

3

.a.

33[

a w

U

  • 7 **

O 4

U 3

u 44 0

2

  • U Q A

23

  • J g

h La G

Q w l

w S a

um el ""3 e

tJ

  • 3 3

G u

O i =

4 4 Q *J C

er

,b a

w 3

3

==

4 m

a a

te Ow UW EU- ~2

.a > u s

- w w U oo 3 b N

2x5 32*

Ei s.

v 3 -3 3

  • 3 2

oo AQ w y U S s

    • C y 3 2*

3 U g a 3 w

  • 7 e y = 3

'n 3 9 C y

q w 3 3 4==

3 L.

y a a *j vi 3 u

u

  • 3 u u i -.3 w

e

,y--

w

--ry---w-ww e

r w+

um

,-r------myg we m

e e

w

  • M S
  • S U

S 9 c*

A%

S E

4 e 2 F=

EA u oo b

.e3 S.E e

  • I es

> w as 4 & 2 1

a Os ea he S e u a =+

2X7 o e ce to E

Eu Ow

=W ce =w T&S U kt =e he

=== 0 3

  • 3
nk 2. 3 0 2 =*

3 3 **

3 t W = **

G u no

  • O 3 "7.3 ee O*

=* 3 e u he le*

3 h

TU P G OM m uk le Yd O he C. u ~2 eau h.

a 4.u

.3^he e O

U te o ~3 w

O S h 2 Q

~1 9 so w

% h.

2 C3 hs u

e== u

'J ee *e 4

lh*

  • u
    • .14 rl 4

.Eo se 8

3 u

3

=o E

R a

u O

me 3

7 b

US

  • U ce S V u

a4 g he u==

3 S X 1 3 9 U

, v p

he ao u Q he U w me

  • 2 U 3 "7 be 3 9 >

uu

  • e he

. O **

he u u4 4 >

"J Q 3

L

  • me m

3 1 4 3

3 3 3 3

3 u

ne 1

3 3

=ea

.a.e 3. ;3 w

he n 3

3

    • a

@ he w 3 3 3 he 3:

e M

l'1

...=

3u u M

w 4

.a a

=4 he 33 0

4. ae 1

4 H

be 3.3

.4 4 <

a

.3 he M

< U 34

  • e =J 5 2 3J 5 *7 Jv U i

t

l

.wm..

4 m e m.

.w=

e b

0 e

t 2

3 3

2.

u 4

I

.u M

h 3

e ua

=t u 2 s 2X7 r

.o 2 a a

3

  • t
  • e2=w 2

2 mm. 3 3

O

.C.o he fJW U

3 s

T 3u 4 U L.

0 3* 3 1*

b e 2 2 U

"7

  • 4 **

2 Q^ w 4

=

  • O 3 S Q

3

=*

3

.a

== u 4u 2 2

'J C

    • U y

De s

% 5 U. ** U C **

"3 >

U 2 1 3 24 7 h*

Se u 3.

U k &

bD b~

G*

C U w =*

ow

=*

  • e 3 **

44 43 5 <3 4 U as Q

=c

  • 7 0 0 W Z g

Q

  • 4 u.

.e 12 3

<H a 4

.,e =2 3 U

3. "U w 3
  • me U*

3 3 "3

?w M

2.

  • - Fage 5 TABLE ENTRIFK

~~

  • EXPtANATIOM/CLARIFTCATIOft Table 1 Raason for DG Opera ion and Scheduled Duration of Run: This colunar contains the differene categories of diesel generator operation. The categories are setuctwed such that the stare and run conditions are similar for all of the tests in a category. In this colunut, enter the scheduled run duration for each of the cese categories. Also enter the number of diesel generator starts that are done for each type of case. For example, if on the :nonthly cast there is one starr from the local con-trols and one starr from the renr:ta controls, the number of starts per test is two. If two or more diesels are started. simultaneously for any reason, please record it as a multiple scarc.

DG No.: Enter each diesel generator's identificaciou number in this colunut as shown in the example.

Number of Starts: Enter the sunt of the successful and ucsuccessful start attempts for each category.

I* there are several starts for each cast, include all of them, but be certain to reccrd the number of starts per test in colu:st one.

Number of Failures: Enter the sum of the failures f or eac.h category. A failure is counted if the objectives of the test are not achieved. A subsystem f ailure char does not cause failure of the diesel generator system is not counced as a failure. If the diesel generator did not stare, run, and load as required by che test, a failure should be recorded. However, if the diesel generator would have supplied power in some capacity f or arr emergency, please explain in Table 3.

For example, if the diesel started on the second attempt or the diesel was tripped to repair a minor oil leak that would not have been a problem in an emergency, this should be noted in Table 3.

Percent Loading of DC (K7): Enter the percentage that the diesel is loaded for each category. The continuous kilowatt rating is em:sidered to be 100%.

Duration of Run 3efore Stop for each DG Failure: Racord the run-time for each f ailure. If the diesel failed to start, the run-time would be O sin.

l Identification of Failures: Attached to this questionnaf e are abscrsets of the LERs related to the diesel generators. The abstracts are numoered starting with one. Refer to this number to identify the failures, but if there was a failure for which there is no abstract, assign the failure a number and include it in Table 3.

l Table 2 l

l Reason for Downtime: Enter in this column the categories of schedule main ~

tenance that make the diesel generator unavailable for emergency sew.ce.

If the diesel generator is unavailable for emergency serrice during surveillance tesetag, report that also.

e 4

Enclosure I - yage &

I Table 2 (conc'd)

Hours of Downtimer Enter the number of hours that the diesel generator is unavailable for emergency service. Reporr the hours under the enlumn reactor shutdown or reactor noe shutdown as appropriar.

Comments: c-c on timer to return tor service after maintenance has begun, or other pertinent information.

hble 3 f.ZE Abstrace No. (Refer ta attached LEE Abstracts): The attached N are numbered starting frca one. Refer to this I.ZE number in column Each 1ZE abstrace should have an entry in this table. If one.

there was a failure not included in the attached abstracts, please assign it a number and enter it in this table.

Downtime Hours: Enger the number of hours chac the diesel generator is unavailable for emergency service. Subdivide these total hours into troubleshooting, parts delivery, and repair or replacemene.

Comments: Use :his column to comment on :he downtime and the failure.

If the reported failure was only a technical specification violation, but vould not be a complete failure of the diesel generator to supply power or would only be a delay, pleasa elaborate in this column.

Table i Equipment or procedure sodified: Lisc in this column the equipment or procedures related to the erargency onsite power system that have been modified since the :eactor became critictl.

Date of Mod.: Enter the date that the modification was complaced.

Reason for Modification and Desired Improvement: Report the reason for the modification and :he desired or observed improvement in :he 57 stem.

1 Description of Modification: 3rtefly des cribe what modification was made.

l l

l l

......a...-..

b b

Mb.

e Des M

i e

tb em M[

i 4

I 3:

=*'

b O

O ew 1

uQ M

Oa a

T w=

2 m 3 E *)

    • st ei lE
  • e W w

3a 3

  • = w.
as.
  • J U.t. *O c

wU 1a4 2. :L 34 "1,

~-

ce er

.o. w

.A w

-=

q u a 3

J.

s a

s.

=4

=.

4 0

=+ w m

M F-J3 F

I N

se.

. k

[uun een

=

g.

aus 8

=*

ag 3

4-Cu 5

at M

4.

W 4

u e W.

W s>

I'*

"3 2 d

as b

==

ww.

= 1.

e 3 3 ha at.no

3..

=

=

wa*

3 0 Q 9 w la.

C C V1 w

o C

  • ='

me UQ C

3 C

    • ha

=*

l t

1 4

1 1

I I

1 i

"A e 3.:

5 i

S I

I I

I I

i i

i ww a w

3 u i C

C C

st C sa W e

2.

51 2

3 34 u

a

== N c W3 C

U g

C C C C

C C

C C

C C

C C

-C u.=. v

=+ c C.

C Ce Ce,C

.C C C

C u==

w w -3 c

e

-e m

t.

eog

= 8 4*

3=

w u

=e

>=

ke a

3 L.

6e U

w e o

h.

U '3 3 se 3 N

C

  • C C

e+

C C C

C C C C C C

he C g Q ee

$1 9 3

C **

4 m a

  • 2 O C.3 w

60 s

O U

en N

ee N m

M

=+

N N

M m

.=s 4

4 er O

4 se 9

a C 4 M

==*

i

=*

3 w

2 "A

US l

I I

Ll e

,e N

o, N

N l

l L

2E

-su u

s=*

3 2 3

4 U S

"J l* C

  • e U

S 3

.3

  • 3 M 9
  • 3 4

m m

4

^

U x0

=

la m x O*

'J

= **

a U

- u EC 1T 2 h.

3

-0 5 km A 3 u 3 3 3* **

Ou Q.

O 7

,Q M

V U D

.a J

-Q 4 at >,q 3

u **

2 c.== u Q

+=

4 Q-h a

.4 u W 3.

\\

=+ e 3 h 4

=a O

'44

-me 3

9

'"1 O.

4 w - =

s w

  • 3 u3 3 a.B 3

.,a d 0 :

4 US O O

  • A.. O U U 23 2

2 9 4 h3*

2 3

u a

  • O

=* O U =+

4

% 3 a

4 %

n 'n

.=* --- "",,

ww g

n =* ~

=~ w 3

~ a us m H H u, _

2

c. V m

6 a = UT --

a'* ** h e.

p

=

==

ce w w w

o*w

.. =

U

.v uw =+

3 U *.

3 his 1.: =*

3 y.

4: he

+4 ut y U *e m.a e U u u 3 s.

a

  • l**

1 3 *.*

3 1 ha 3 O

G. 3 J J U

= U Q as V **

= 21 2 3 3C3 bA 3

%3 W1 b W1

%*>w I

1 i

I I

lli l

PI

' efI '.

g a

l d

e l

ge 4aew l

p t r r e 8

at tf sa a

l g

e e

v ys l r P

e l u l

4 aoi cl e

i l

t e e

c.

em es ac mr ro,

4 ve uH e 4

m oie s

H nl t t ot 8

oE u

ar l n$

tt o

cel nl n t n ef EFU D

oe b

r r

t o oo o

bfu(

nt ns l 4 4

ae d

ct et l g i a en f

i n si d w e r.

i i oo Hd Dd CD droc e

n C w D ti o

e d

m t

i unig-6 8

8 t

i n

m i

1 4

wo t

D oi

~

s d

I 8

0 4

r]

e e

o l

u9 m

tc-d1 i

e t

al ey 8

8 lir n

R ~D 4

c a w

S e o

Y D

r T

or f

t a o

C 7

ad r n s

ee r

nl u

ea l

'I o

G GC l

D lese nf e

i w}

D oD d

t uhl sj 6

8 1

I r

o tc al 4

H]

e 2

I t

e c bl id t

ve s

o l

r r e

)

l ei t

a s u e

v q

r 2

o ye e

l 6

p n

n cr p

E.

m u

e el o

n l

a B

r c

ec a i

sef a

S A

o d n vnu t t i go t

T(

f e ea ian na r

i l

m l n t nu ec Gee ni ue n e s.

l mi D ms 4

ot d t et - a pf eua s a e n vuiu ii e

at n i

ud mr c s w aw l

i el mn g

o i

e o c la r a en i i o e, te ah RD Si PHSA Et Tf I

t i

j il l

i <ii l

jj3 4

.e CE h=

E 0D e u =*

F 2

m

./

==>

s w.m u-AM

=4

.a S T 34

==e me =e*

1 9

3.

> m =F

~

4 eu W

4 A De 9E G S be he e h* c e es e =*

W O O U 3 T. O o S we L ** u 9 ti 2

ge 3 U U e 0g me w 4 4 S.

8"*

t$,

.T Gs, G C h the @

U E.O.M.

U he se e e me.

=*

3 e.

  • * = ' >

T mo C o e.3*

"r ee ** T

3. O 3 g.e E eeS 9

e he e e he

=

w.a me

=*

3 e3, u 3hk >

n,.e g

@*** w !.f* h M

3 =y g EF S u he 3

h*

h*

7 s-> 2 es C

hh he he he the G h6 g g gg C 9

  • O e 3

Ea me

=e w

"e*

=r U e S he he S =e g gg W As he E ee

%e a gg he a6 4 8

?"

f O h II u.$. 3 E m

U U

u U be 3 O O S

  • 6
  • * = *

== 8 *e he he

=e W

    • ",3
  • d bri 3 3C S S

."le M a @ N C u

Q =2 g8

.E.,

ko a

a n O

gg g

  • 2

,4 **

n.

.e he

6. =e a b*

h h*

ce =.

re w.

O C 3 h*

3

=y a w

U a'*

U u be he g he g

"G

.a =e =e e6 g g

=fe M # #

he e S he.e Q>

M **.%

g g

g.

,g, U

=* h h **

O k

I ar he hs a ty

=F e6 1 T 3,

U O

me "3

"'J

  • no @

C uC C uO

=e.*

3 2

3 3 3 e.a.

3 e*

3 0

g uy U

== as 2.

8

=e U G =e 4

0

.A C f/3 ft) 3 *.a.

= L1 "7

0 3

CJ

.=.

O l

N U @l e

"3

=* U e

J =*

C U N =* =d CCCCC CC u

~G c La

  • U am O T

=f.

Sa 3 e

  • G 3m=

he

=* M Q he U ed S

Q &

4 *3

  • =

he S >

    • ad CCCCCC CC oo e ha

=e en he U U e Q >

c f.J m

n.

.-s 3

1 eQ C

A 0

u 3

se==

g

=

U

.3

.4

=* C =*C C C C C CC

=e t) 3 3 2

8 3

3

=e a

w v.=

c 3

3

    • a C

C 6e ad 3 N

fM CCCCC CC oe H=

m L"!

l P'T

=

y

. W U

(

Z

.o M -

M Q l

[

u ed be

=,

u =

I aC n VI s

l

@w b QJ

]

aNmwe4No 4@ C oa=

< UW

=

=.s.J M U W = 'T j

- u i

)

1 i

e

-~~

a e

=

e O

A

=*

a

=e e

C 3

Y 39 $

=

c

=* g# s. o

  • 2 h 3
  1. .a

'T'*

e he e

  • u C

g C

u at m.

G T

4 6*

  • 49 y

=e a+ ga a

b g

g he A 3 a C

0 =.

4 9 34 M as se l

u

6. Ae z

=

9 "i W &

"F 3 he le s =3

  • J

=*

2 9 U S

2 =+ 9

  1. 5
  • t 43 3

e J

.,1

'3 i

  • 1 9

64 a.

E7 E

"3 3*

W

.3 2U c' M

K u

3 ee

> 1 9

=+ = Q

  • 2 ne Q

gS 3 4

  • e O hi **

a 3 e a

se ca=?

O =* O 2

U 1 **

S

== 3 lh4 2 2 3

h.

S alk

=e u *e

-+ u u c te 3****

4 OO1

    • .a O 4 3 he es.
  • 3

=

3

.;L

=+

6.

s3 3

= S =+

u 1 a =*

3 a

5 3 13 2 g

3m h he he O 2

1

=*

O "3 s*

1 2 3 o

A 4 3 3

'3 3 *3 u 3 Q u 50 4 3 3 se

=e me 3 1 **

  • J C 3 g

O. W "3 h*

2 h

g e m

=e w3 3 3 J *a =e g

2

= *

  • 8 3 as o3 3 g

a#

=4=*

n uu

  • g Q as a se
  • 3 3

= u 4 U L. M 3 3

=* 3 2

4 ee 3

h.

me h

3 3 ee 4

C 3

~3 4

=*

3 U =

2 u

U

  • e

'J we S

=e he we he M

=* "3 0

.3 to no u3 0

3 0

1 gE

==

=+

=*

U 6e

=*

4

    • 6e S ne be
  • 3 "3

3 0 u =

U S 3

u

=e y

30==

%+

2 h $

w 3 he he Q

u1

    • U S $

E

  • e O==

"3

.3 ee Q

ed U 2 0 3 W a w

4 Q7

% be w

he he M 1

3 lh

.2 U

he E 3 W 6e 8 A Q =*

he O h*

> 9 4 he se 3

U

  • e me 4 30 "3

5 O 4

  • 3 Ow U

be S

ne U me me o be g u as ne S-a

  • =e

> J

= u

= 3

- W g a 3 e U e

=e me n

9 U he

> ad E e4 5 <3 Ma 1w a=

- a 3

he c

*

.S.*we se u M=

se 3 *

~3 9 3 4

D 3

se X n

n m

1 3

N 4

A 4 0 9

8 "1

M ee a,a J G W

3 9

m e 3

h

=

"A a

m a C i

>* w

    • 3 3
C 1
u =3

=+

1 y

=e i

V 3 9 W

4 44 5 "3 =*

O 3 4 j

1 V **

h he u

=e W =e 3

9 e4 3 3 3

"'3

.3

=*

3 =e T ** Q 3

4 3 4 Y

.a4 as a

==

3

=* 3

r 3&/5/0' 00001-00000G ///

1 PAGE 349 0

ACCESSION NO.

004015445+

TITLE OG LOAD SEQUEN CE TI MERS OUT OF LIMITS AT CONNECTICUT YANKEE CORPAUTH CCNNECTICUT YANKEE ATOM IC PQwER CO..

EAST HAMPTON. CT DATE 1980 TYPE O

MdMO 3 PGS. LTR 4 4. 8R 80 -01/ I T TO NRC OFFICE OF I CE. REGION I,

JAN. 16. 1960. DOCKET S C -213. TYPE

^wR.

MFG-cgEST. AE--S&W NRC PU6LIC DOCUMENT ROOM. 1717 H STAEET.

AV A IL AVAILABILITY W ASH I NG TON. D. C.

20555 108 CENTS /PAGE -- MINIMUM CHARGE 62 00) 010280.

POWER LEVEL - 100%.

CAUSE - OIL CN

, AdSIRACT DATE OF EVENT D IAPHR AGM CO UP LE R.

OURING A TEST OF THE C 'ESEL GENER A TOR AUTOMATIC LOAD SEQUENCE TIMERS. TIMERS FOR JERVICE WATER PUMPS 1A AND 10 AND CON TA INMENT AIR RECIRCULATION FAN F 17-1 FAILEO TO MEET THE SURV E LLLANCE TEST ACCEPTANCE CRITERIA.

FOUR SPARE TIMERS w&RE RE TURNEO TO THE MANUFACTURER FOR FAILURE ANALYSIS.

THE T I M E-0U T CONDITION WAS OUE TO A SMALL AMOUNT OF COMPRESSCR GIL DEPOSITEC ON THE D I APHR AGM CO V PLE R. THE RESULTS OF A SLdCONTRACTORS USE CF UNF I L TER ED AIR IN A BLOW OFF OPERATION.

THE VENDOR NOTED THIS CONDITION ON A VERY SMALL PERCENTAGE OF UNI TS SHIPPED OUR ING THE LAST FEw MONTHS OF 1977 AND E AR LY 1978.

THE COND I T ION WAS NOT DETECTED IN ITS INSPECTION OPERATION. HCWEVER iMMEDIATE STEPS #ERE TAKEN TO CORRECT THE SITUATION.

COMPONEN T COJE R EL AY X-A EL AY S SY S TE M COOT C E-E,w ER G GENER ATOR SYS & CCN TR CLS 36/S/ Gov 0001-0000007//

2 ACCESSION NO.

00ZO154453 TIILt NEUTRAL LEADS FROM DG TO TRANSFORMER CUT A T CONNECTICUT YANKEE CORPAUTH C CN NEC T I CU T YA NK E E ATOMIC POWER CO.. EAST HAMPTON. CT DATL 1980 TY PE O

MEMO 3 PG5. LTR

  • A. SR 80 -02 / 3 L TO NRC OFFICE OF 1 G E.

REGION JAN. 10. 1980. D O CK ET 50-213. T YP E --P w R. MFG--wCST. AE -SLd NRC PUcLI C DOCUMEN T ROOM. 1717 ' M STREET.

AVAIL AVAILABILITY MINIMUM CHARGE

  1. ASHINGTON.

D.

C.

20555 (08 CENTS /PAGE 52 00) 100%.

CAUSE -

ABS TR AC T DATE OF EVEN T - 122*79.

POWER LE V EL CONS T RU C T ION ERROR.

OURING MOD IF I CA T I CN OF DRAINS IN iMERGCNCY DIESEL GbNERATOR 2A CUSICAL. THE CONOUIT CONT A INING NEUTR AL LEA OS TO THE TRANSFORMER dERE CUT.

THE ELECTRICAL LEADS IN THE CONOU1T *ERE GROUNDEO ilu T NOT SEVERED COMPLETELY.

THE DIESEL 4AS REMOVED FRCM SERVICE. THE REQUND AN T D IESEL GENERATOR dAS TESTCO FOR CPERABILITY.

THE CABLE AND COr OUI T MERE REPA!RC3 ANO UNIT a AS RETURNED TO SEHVICE THE SAME DAY.

CONSTRUCTION ORA #lNGb DID NCl INDICATE THL PROPER POSITION OF THE CONDUIT IN THE CONCmE TE S LA 8.

THE CABLE WILL BE REPLACED.

COMPUNENT CODE E LdCON -EL4CT R I CA L CONDU6 TORS SYSTEM CODE EE-EMENG LENERATCH SYS G CO N TRO LS 36/5/0000001-0000007//

3 ACCES S ! J N No.

00E0154*52 TITLE A ucTENT1AL O!ESEL GENEkATCR OVERLOAD COULD Ex1ST AT CONNECTICUT Yt NK E E CORPAUTH CONNECT 1CLT YA WKEu ATOM IC POWER CO., EAST HAMPTCN. CT DATE 1960 TYPt O

MEMO 3 PGb. LTR w /L ER 60 -03 / I P TO NRC OFFICE OF 1 C E.

RcGION 1.

F EB.

7.

1980. CO CKE T S0-213. TYPE--PwR. MFG--WEST. A E --S L d AVAIL AVAILABILITY - NRC PLSL IC OOCUMEN T PuGM. 1717 H dTREET.

WASHINGTON.

O.

C.

20555 (08 CENTS /PAGE -- w!NIMUM CHARGE SL.00)

ABSTRACT QATE OF eve NT - 012960.

POWER LEVEL - 100%.

CAUSE - DCEIGN ERROR. UuRINO RE V IE m OF EMERGENCY DIESbL uENERATOR LC AO S. IT dLCAME CV10ENT THAT A POTENTIAL DIESEL GENERATOR DYERLOAD COND1ILON COULO EXIST IN THE S I TU A T ION WHERE THE PLANT E XPtR IE NCE3 A TR IP w1TH LOSS OF OFFb1TE POWER, THEN SUbbEOUdNTLY AN ACC10 TNT OCCURRED.

IT MAY HAV6 d5EN POSSIDLE S CR THe O!EStL GENER A TCRS TO SECOME OVERLO ADED AS A RESULT OF CARRYING A AWE -A CC I DEN T NON-5AFETY RELATED LOAD IN COMB 1MATION 41TH The ACC IDEN T SEOUENCED LCAOS.

THE SCENARIC GF A LOSS OF NORMAL WO*E3 FOLLOdED hY LOADING TME DIESEL ( AU TOM A T ICALLY AND MANUALLY) AND ADDITICNALLY FOLLOwE3 6Y Lobs OF COOLANT ACCIOFNT

36/5/0000001-0000007,/

3, CON T I NU A T I ON 1

PAGE 350 j

elTH SIAS MAS NO T PREV IOUSLY ANALYZEO.

PROCEDURAL CHANGES aERE i

MADE TO LIMIT TMd LOAO THAT COULO 9E P LA CE O ON THE DIESEL GENERATOR.

AN INTERIM AUTOMATIC LOAO SHEOGING SCHEME a!LL SE INSTALLED OURI NG THE UPCOM ING OUT AGE.

COMPONENT CODE ENG INE -cNG IN ES.1 N TE RN AL COMBUSTION SYSTEM CODE Ed-EMER G GENcR ATOR SYS & CONTRsLS 36 /5 / 0 0 00 0 01 -C 0 0 00 07/ /

4 ACCthSION NO.

00ZO151999 TITLE O!ESEL GcNERATOR TU R80CH AR GER CEAR INGS MAY OE OAMAGEO AT CONNECTICUT V A NK EE CORHAUTH CONN. Y ANKEE A TOMIC POWER CO.

DATE 1979 TY P E Q

MERO L TR d/Lb4 79-009 TO U.S. NRC. REGICN

1. SEP 12. 1979. OCCKET S0-213. T Y P E --Pw R. MFG--WEST.

AE--S+4 CO N TROL--02 $994 AVAIL AVAILA61LITY - NRC PU6LI C OCCUMEN T ROOM. 1717 H S TR E F T.

dASHINGTGN 0.C. 20SSS. (Ga /PAGE -- M I N I M UM CHARGE 52 00)

AuST4ACT OATE OF = VENT - 063179. POWER LEVEL - 100%. CAUSE M ANUF AC TUR ING ER R CR. M AN UF AC TUR ER CF PLANT EMERCENCY DIESEL GENERATORS HAS I C EN T IF I EO A POT EN T I AL PROBLEM WITH TURBOCHARGER THRUST BEAR ING LUaR ICAT I ON. IF THE ENGINE IS RESTARTED WITHIN lb TO 160 M I NU TE S OF A PREV IOUS HOT RUN. SOME SMEAR ING CF BEARING METAL MAY OCCUR. CUMULATIVE D AMAGE FROM SEVERAL S!w!LAR STARTS COULD RESULT IN TUR90 CHARGER FAILURE.

DAMAGE COULO OCCUR SECAUSE MA IN LUdE OIL bYSTEM PUMP " PRIME" MAY NOT 6E MAINTAINEO UUR ING THIS PERIOG. ADM IN I STR A T IVE CON TR OLS mAVE dtEN INST 1TLTED TC AVOIO THtSE TY PCS OF STARTS & ENSURE THAT AT LEAST ONE D I ES EL IS AVAILAOLE AT ALL TIMES. MANUFACTURE 4 15 OtV ELOP ING VCD IF ICA T ION TO LudRICATION SYSTEM.

COMPGNENT COLE E NG IN E-ENu 1 NES. I N TE RN AL COMBUSTION SY S TE M CODE E E-E.wdR G GENiRATOR SYS & CO N T RO LS 3o/S/0000001-4000007//

5 ACCcSSION NC.

0 0Z 0142 o 13 TITLE UPDATE RcPOPT GN PO TENTI AL OG QVERLOx0 SITUATION AT CONNECTICUT YANKEE CORPAUTH CGNNECTICUT YANKEE ATCM IC POWER CO.. EAST HAMPTON. CT DATd 1978 TY PE O

MEMO S PGS. LTR w/40 76-06/1T TO NRC OFFICE OF 1 &E. REGION wAY

31. 1976. DO LK ET 50-213. TYPE

^wR.

MFG--WEST.. A E --S TO N E &

dEGSTER AVAIL AVAILAEILITY - NRC PUBLI C DOCUMEN T ROCM. 1717 H STREET.

MINIMUM CHARGE

  1. ASHINGTON.

D.

C.

20Sb5 (Od CENTS /PAGE 52 00)

A6S TR ACT DATE uF EvCNr - G50678.

POWER LEVCL - 100%.

CAUSE - DESIGN ERRUR. A PO T EN T I A L OVERLOAD SITUATION ON THE OltbEL GENER A TCRS UNDER CERTAIN LOCA COND I TICNS WAS IDENTIFIEO.

IT WAS OETE9MINtO THAT NO PGRTION CF THE LOCA ANALYSIS TOOK CREDIT FOR CHARG ING PUMP FLGw.

A DESIGN CHANGE WAS INITIATED TH A T wCULO AUT OM AT ICALLY 6LCCK OR TRIP THE CHARGING PUMPS IN THE EVENT OF A SAFETY INJECTION SIGNAL COINCIDENT #1TH LOSS OF OFFSITE POabR.

THIS CHANGE WILL PERMIT THE 01ESEL GENERATORS TO QPER A TE

.41 T H IN LOAO SPECS AT ALL TIMES.

LUMPONLNr COOc Z ZZ Z Z Z-CLNPG NE NT CGUE NOT APPLICAaLE SYSTEM CaDC d c-dM E R G GCNeRATCH SYS & CONTROLS 36 / S/ 0 0 6 v 0 01 -c 9 0 00 0 7 / /

6 ACCdSSION Nu.

00ZO1J63tv TITLE C/CRGENCY O I tS EL S HAVE POTENTIAL FCR OVERLOAO OURING CERTAIN LCCA AT CONNECTICUT YANKEE CORPAuTH CCNNECTICVT YA NKE c ATCM IC POWER CO.. EAST HAMPTON. CT DAfd 1973 TYPE O

MEMO 3 PGS. LIR * /R U 76-co/IT TO NRC OFFICE OF 1 L C. REGION 1.

MAY 19.

1978, J C LA E T b0 -213.

TYPE--PWh. :d F G --*E S T.. AE--STONE 5 acO S TE P AVAIL AV A IL..u ! LITY - Nk C PUGL L C DOCUMS-s i QOOM, 1717 H STR EE T.

WASHINGION.

u. C.

20555 (r3 CENTS /PAGE -- MINIMUM CHARG5

&E.00)

AuSThaCT OATE OF iVENT - 0S067e.

POWER LEVEL - 100%.

C AU SE - INCCRRECT AdSUMPI!LNs udED.

CALLULA T IONS COMwLETED MAY d SHOW THAT EACaucNCY J I LS CL S dG2A AND EG2S HAVE A sOTENT I AL FCR OVERLCAO

...L..--

=

9 32/5/0'000001-0000007//

6 CONTINUATION 1

AAGE 251 W HENE VE R THERR CONNhCTED EMERGENCY LOADS ARE OPER A T I NG INTO RF. ACTOR COOLAN T PRES 5URE COND I TIONS WH ICH ARE HEPR ESENTA T IVE OF CER TA IN LOCA C CND IT IONS.

IT HAS BEEN OETERMINEO THAT THE OR IGINAL LO AO! NG AN ALY S I S O F THE 01ESEL GENERATORS HAD USEO SOM E INCORR ECT ASSUMPTIONS.

REANALYSIS OF THESE ASSUMPTIONS i

SHOWS THE DIESEL LOAu!NG CALCULATIONS TO BE HIGHER THAN THE 01E SE LS H IGH ES T R AThO LO AD I NG.

THE CORRECTIVE ACTIONS ARi.

CLRRENTLY UN DE R INVESTIGATION.

COMPONENT CODE E NG INE-ENG I NhS. I N TE RN AL COMbbS T ION SYSTEM CODE EE-EMERG GENtRATOR hYS 6 CONTROLS 30/5/0000001-0000007//

7 ACCcSSION NO.

00Z0111c02 T1?LE EMERGcNCY O!ESEL FR IPS ON OVERSOESO AT CONNECTICUT YANKEE CORPQUTH CONNEC T 1 CUT YA NK E E ATOMIC POcER CO..

H AMP TON. CT DAfi 1976 TY W E O

MEMO 2 pus. LTR W /R O L ER -7 6 -o /3 -L TO Nhc OFFICE OF 1 6 E. 4EGION 1.

FEB. 23. 1976. DO CK cT 50-213. T*PE

'*R.

MFG --4 ES T., A E --S TUNd

& MESSThR AVAIL AVAILAb!L1TY - N R C PUOL I C OOCUMEN T ROOM. 1717 N STREET.

W ASH I NG TON, D. C.

20545 (08.ENTS/PAGE -- MIN! MUM CHARGE 12 00)

ABSTRACT CAubE - C ALIBR AT ION TOOL LEFT IN E GU I P ME N T.

OURING TESTING d ITH THE R E A CT OR AT 100% POWER. EMERGENCY DIESCL 2 0 TRIPOED ON OVERSPEED.

A CA LIS R A T IO N TOOL LEFT IN THE INJECTOR R ACr.

FOLLOd!NG RECENT GOVT 4NOR REPLACEMENT AND AOJUST9ENTS CAUSED T Hb INJECTON NACK TO SE MELO CPtN 1 INCH CAU$1NG DVERSPEEC WITH NO LJAG.

4

~~

~ - - ~

,-..-w

..., _,

Retrieved from "https://kanterella.com/w/index.php?title=ML20009F127&oldid=4653483"