ML17252A258

Dresden, Units 2 and 3, Transmittal of Reportable Occurrence Report No. 50-249/1976-36

ML17252A258
Person / Time
Site:	Dresden
Issue date:	01/20/1977
From:	Stephenson B B Commonwealth Edison Co
To:	Keppler J G NRC/RGN-III
References
50-249/1976-36
Download: ML17252A258 (6)

See also: IR 05000249/2019076

Text

• • • , L ; R.R. #1 8'.\ I . Morris, Illinois 60450 Telephone

815/942-2920

BBS Ltr. 1177-50 Mr. James G. Keppler, Regional

D.irectora

te .of Regulatory

Operations

-Region III U. S. Nuclear Regulatory

Commission

799 Roosevelt

Road Glen:Ellyn;

Illinois 60137 . . . ........___R egufatqry*

..

please find Reportable

Occurrence

report number

Cy. This report is being submitted

to your office in accordance ,the Dresden Nuclear Power Station Technical

Specifications, Section 6.6.B. BBS :jo Enclosure

cc: Director of Inspection

& Enforcement

?' ,-:;...::;, v.* B. B. Stephenson

Dresden Nuclear Power Station DireGJo.r

of Managem.ent

Information

& Program Control File/NRC ... ** J .l. 888

'CONTROL BLOCK: .LI ---1 1 . 6 . e,LEASE PRINT AU REOlJiRED

iN:FORMATION]

LICENSEE NAME @E] Lr I LI nlRls I 31 7 8 9 14 * . LICENSE NUMBER I o I o 1-\1 o Io Io I o I o 1-1 o I o I 15 * 25 REPORT . REPORT LICENSE TYPE I 4 I 1 1 1 111 1 I 26 30 EVEN.T TYPE I 0 I 3 1 31 . 32 , CATEGORY TYPE.' SOURCE DOCKET NUMBER . EVENT DATE REPORT DATE @El CON} I I I w LIJ I o I s I o 1-1 o I 21 AJ 9 I * t 1 J 2 I _2 I ) I . 1 I 6 I I o Lt P JQ..J.7 L 1 I 7'*" 8* *57 . 58 59 60 61 ** s0** 69.* * **** * * 74 75 * 00 EVENT DESCRIPTION

• * Jo'21 J. A routine surveillance

aud:j_.t .conducted

by sta_tion personnel

,:revealed

that a number I 7 8 9 BO @@] I of surveillance

intervals

had been inadvertently

exceed.ed

during the six-month.*

I 7*'8

_______ . -.8-10 jbj41 *I * * period following

a Tech Spec revision '."hich Jiniited those intervals.

Tech Spec I 7 8 .9 .. 80. lolsF I sectJon 1.0. c. C (a) and (b) .(which becam'e ef'fectTve

in*

1976) specified

• that I T B:

__ (o]sl '-.' _(;;;..?_)-'.'-$._l.l_rv_.

e_i'-.)-'_ ,e_i_* n .....

...... p._o_t_.,t_P

.....

-:::..*..:JI

7* 8 9 SYSTEM . CODE [§Illzlzl 7 8 9 10 . CAUSE *cooE 11 .. COMPONENT

CODE * I z I z I z I z I z I z1 .. 12 . 17 .. CAUSE* DESCRIPTION . PRIME COMPONENT

SUPPUEA 43. ;coMPONENT.

MANUFACTURER

I z 19 19 I 9 I 44 47 80 VlOLAOON * (Continued) 48 jo Isl __ s_t_a_t_i_o_n_s_u_rv_._e_i_ll_

.. a_n __ c_e_s_a_r_e_s_c_h_e_d_u_l_e_d_*_a_n_d_.

_u_p_d_a_t

e_d_w_e_e_k_l_y_o_n_a

__ c_o_m_p_u_t_e_r_._*--F_r_o_m_t_h_e...;, . .;....._--11 7 8 9. . 80 joj9j j t.ime surveillance

by compute:r;.

began until December 6, 1976, surveillance . I , 7. 8 9 80 _ .... s_c_h_e_d_u_l_i_n.;:;.g_w_a_s_p:;...e_r_f_o_rm_e_d_o_n_a_*

_T_h_i_* s_m_e_a_n_t_t_h_a_t_*_a_m_o_n

__ t_h_l.;_y_*

_i_t_e_m __ .;....._JI 7 8 9 FACILITY *.METHOD OF (Continued)

80 STATUS \Iii POWER OTHER STATUS *DISCOVERY

DISCOVERY

DESCRIPTION

EEJ I 0 I 9 I 3 I

___ _.,,,I 7 8 ... 9. 10 12 13 .. 44 ,,45 NA. ,. *46 80 CONTENT * FORM 'OF ACTIVITY RELEASED

lzJ OF RELEASE AMOUNT OF ACTIVITY . .. uJ t NA 1 10

_ __....;;.;...

____ . I * NA .. LOCATION OF RELEASE I

7 .. 8 .. 9 PERSONNEL . NUMBER [ill] l OJ. 0.1 0 I 7*. 8 9 .. 11 ExP.OSURES

,

" TYPE 12 .. DESCRIPTION

• NA.: 13 PERS'ONNEL-

INJURIES . NUMBER 'OESCRIPT.iON

• , /' 80 EEJ I 01 01 01

__

7. 8 9 11 12 80 OFFSITE CONSEQUENCES

EE NA. 7. 8 9 80 LOSS OR DAMAGE TO . FACILITY TYPE DESCRIPTION

(!fil;.Uj . NA 7 0*s * .10 80 PUBLICITY'

.. filZ] 7 8 9 NA. 80 ADDITIONAL

FACTORS NA* 7 8 9 80 NAME; __

....;N;,;.;i;;;..mm..;.....;e;,_r;__

__ .,...---------*

T_._2_2_2

__ _ *GPO 881*117

• \ .. -... *EVENT DESCRIPTION (Continued) (b) that the total combined interval of any*3 consecutive

interirals

was not to exceed 3. 25 times the specified

inte.rval..

Sur:ve:i,llance

interval

wer:,¢. identified

in both categories .dE!$C.r,ibed

above* It was .also noted during the audit that certain surveillanc.e

items had not been* conducted

.*. (Seec*attached.

list for titles of surveillance

items,. involved-.)

(50-249/1976'-36)

CAUSE DESCRIPTION (Continued)

was scheduled

for the same time period each month regardless

of when it had been performed

the previous month. Consequently, if a monthly item, for exa,mple, were performed.nine.days "early," by the time the.item .. appeared on the .schedule -to.be performed

ag_ain, the interval plus 25% would have alreadY._*

e_lapsed, resulting

in a Teel( Sp*ec violation. Ju.ne, 197.6, a course of action .had been c:l.ecided

upon _whi.ch woµld ensure t.ha;.t .. surveilla.nce

intervals

did not exceed t:he_.*re:vis:ed

.. limits. First, *the *con'fpU'ter

.. w:as ... to b.e ;t';eprogrammed

to schedule

on a d,ate-:.cione

ra.theL .. than .o.n .a frequency

basis. A formal request for program *niodifications

was initi_ated

in* July, 1916. These modifications

had been programmed, tested, and successfully

implemented

by December, 1976. Secondly, a base date (desirable

surveillance

date) was to be assigned to each regularly

scheduled

surveillance

item to provide a stable reference

po.int. This. phase has been substantj

ally completed., and-final base. date

is expected to be entered into the computer no later than February 1977. Successful

implementation

of the program described

above will permit a prompt comparison

to be made between a given surveillance

item's scheduled

date and its base date. In this manner it will be possible to determine

readily whether a surveillance

item has been performed

within the required inte.rval.

To ensure that any discrepancy

is identified

in a timely manner, all surveillance

items will be viewed on a monthly basis. The number of surveillance

items involved in this event represented

less than* 1% .of the t_otal nllinber of surveillances

conducted

duringrt:he

period in-"-"ques'tion

• The safety impiications

of this event, therefore, we+e c<;>,nsidered

to be. minimal>.

Surveillance

interval violations

were identified

concurrently

for all three units at D.r.esden.

' ..

-

... *{*--***-* -*1-. ?:--:---*-:, *** .-.-*-..

• -*---

• -:-**-****

• • • * *** *

... ... *--.-..

.* ,.,.>4 *. . . . . ..... . . .. : .

. ... ; *, ' .. .. -* .. ** :t:: .. . : .. : , .. INSTRUMENTATION..

A,REA suRv. *sURv .* * F *

EREQ. ITEM.NO. Q. M. -M*** M *M M *,:.* M 007 007 Scram * 1* * APRM Upscale, In6perafive:

& Downscale

• . Scram 3 APRM Upscale, -Inoperative

& Downscale

016: .. *1 .Sfilf:Upscal.e':Rod.

Bfock .. 018 * ** 3 .RBM *upsGa*f:e

Downs*cale:

Rod. ;Block 019 0,19 02,3 028 l APRM Flow Bias Upscale & *nownscale

• .Rod Block * 3 APRM Flow: Bias Upscale .. & Downscale

Rod 1 Main Steam Line High Flow Isolation_ . IiC2.J.a.e:J.01

1 * Isolation

Condenser

Steam Line High Flm Isolatio1 " :..' . .* . '*tECH.*

• 4._2.1

4.1. 2 4.2.1 . 4.2.1 4.2.1 4.2.1 4.2.1 M 029 1 Isolation

Condenser

Condensate

Line Flrn 4.2.1 ... , M 042 1 Containnient

Spray

ECCS * (2) *' 4. 2 .1 M : 042 3 Containment

Spray Interlocks

ECCS (2) 4. 2.1 ... .... . . . . . .. M 051 3 Rx Bu.ilding

CCW .Radiation

Monitor 4.8.C M 052 1 _Servic:e

Water *R.aaiatfon

• Monitor

4.8.C " " .. : .. ,. -' * ... -.. " DATES OF EXCEEDED.LN-TERVA'

8-17-76 To 9-28-76 -.:::*; .. 7-19-76 To 10-28-76 :8-17-76 To 11-:29-76

11-3-76. Tp H'-13::)Q

___ . 8-7-76 Jo

.. ---* 8-17-76 To 9-:;-28-:7.6

.. .... : 6-18-76 To

' , . To

To ll-29-< 6...:19-76.To

7-30..:. 7.6 .. 9-15-76 To 10-24-76*

.. ',':;.'* . '. 9-15-76 To 10-24_:.76

8-17-76 *To 9-30--76 8-:17-76 To 12-4-76 6-:14...:76

To 9-29-76**

... *. 6-'-14.;_76

• to 7-23--76 .... **. *F.Q ...

• of

ViOJ..ation.: . . .... *-:.: .* .. -* ..... * . : . * *1 . "'". 1 Frequency

Interval Plus 25% Exceeded . . * . * . _;.;. .... . *-. ' .** ... **. * ' ** 3 *.,. 3.

Nprmal Interval Plus Single* Interval 25% Exceeded.

'M c.

Surveillance

v* * .. * .. ;. . *. . * . .** * ... ..... . *.* .,..

, .. :*. 1.* . ' *. -. *.*. . j ** .. : :,. . *:: :t .. -.. .

>./'. =>--: > *.. . . ' ..... . ! . . .. OP.ERATING

A,REA SURV. ** SURV. * F 'LREQ. . ITEM NO . 0. *

• 012 3 Core Spray Pump Operability

'* .' M. 013 .3 Core Spray M.O. Valve

M ..... .9.!.:'L:.c

.. )1 __ . .Jlj..gJ:i.

PJpirig Inspection*

• M ** *016 * 3 ** . LPCI * Pump

• . . . , ... .M .* 017 3 : -LPCI M. 0. Valve Operability

M 022 M Torus/Drvwell

• Vacuum Bre<itker

Cvclirti?

022 1 Torus/Drywell

Vacuum Breaker Cycling i 1 MSIV Trip and Timing , . 02_3 i .-_:-..-.:...,_-1 HPCI Pump Oi:ierabilitv

M* -<: 028 **, .... ... M 029 1 HPCI M.O. Valve Operability . Q 030 1 HPCI Flow Test* ':. .. :_g: * 047 . M Abnormal Procedure

Dd:lL ........ : .. . . ... *. ' .... * . . 1* -.. *.* . -*--. *.-. . . . . . --i : /,. . '*'.rECH ** *

• DATES OF EXCEEDED.lN-TERVA:.

6-18-76 Io 9-27-76 4.5.A 4.11 Not Done* June :Thru -Sept .. 4.5.A 6-18-76

4.5.A 6-18.:..., 76 To_, . 4. 7.A 4 a Not Done Ma'l or June 4.7.A.4.a

8-8-76 To 9-30-76 * f--**

5-3-76 T6 8-29-76 6-ll-76:To 4 . .s:c;:***:--7-2i-76 To . 4.5.C 4.5.C * . ....... _-, ,*

To 7-21-l6* 7-21-76 To

• . 5-4-76 To

Npt Done* Since.

7.6 . ** . , .. .* . t -** * f ** .,. .. * *.. " .. *F.Q *.

of Frequency" VicU.ation:

.. ***-:: .*.: . * * :1* * .. 1 Frequency

Interval *Plus 25% Exceeded ..* .... r,: ... :._':: -' if-:: ' 1:-... -..... * .. :.: 3* .. 3 Times Normal. Interval Plus Single Interval 25% Exceeded *. "M * Missed Surveillance. . * .. *.* .. *: *.-* *-.. :_ i: ... : 1 :*:-.*.: . -. . .. .. ..

.. ... ;.'I . . :*I * -I

j * ** * j * y *:. '. ., .... . . ** .. . ,' ... * ..... . . t .. RAP-CHEMISTRY

A.REA . Y .. .. ;. SURV. S.URV. * * F 'EREQ. * . ITEM . NO. Q. .. * DES_CRIP!LON

• DATES OF: EXCEEDED .LN-TERVA

• ... *. ... Reac.tor Water:

.. 4.'6.C.l.b

9-15-76

• . ,;, .. ** *,, .. . . 'l._._ '.**. .. , ..... * ..*. -. ..

.... *. *. .. " . . ;, .: ' . ' '*.* ! . .** .* .! .. .. * ... _* .. ..*\: . ... -:* .. * .. .. *. , . *:**** . *.:* ... . . *F.Q *.. = .Type of Frequency*

.. : .* :-. * *_ * * * * *1 .... 1 *Frequency

Plus 25% Exceeded* . ... 3 3 Times Normal Interval Plus Single. Interval 25% Exceeded . ': .. --:-*.***

..... 'M c. Miss.ed. Surveillance

• • .,* *.:. **. :. ' *. ..... . .. *,