ML17252A258

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Transmittal of Reportable Occurrence Report No. 50-249/1976-36
ML17252A258
Person / Time
Site: Dresden  Constellation icon.png
Issue date: 01/20/1977
From: Stephenson B
Commonwealth Edison Co
To: James Keppler
NRC/RGN-III
References
50-249/1976-36
Download: ML17252A258 (6)
v • d • e


Text

~r~!!:e~~~:*t~e~~~!~~ ***, \\~ L ;

R.R. #1 8'.\\ I Morris, Illinois 60450

  • ~

Telephone 815/942-2920 BBS Ltr. 1177-50 Mr. James G. Keppler, Regional Dire:.~~--

D.irectora te.of Regulatory Operations - Region III U. S. Nuclear Regulatory Commission 799 Roosevelt Road Glen:Ellyn; Illinois 60137

........___R --

egufatqry*

.. -~

E~closed please find Reportable Occurrence report number

.lf.V~. Cy.

This report is being submitted to your office in accordance.~wi-th,the Dresden Nuclear Power Station Technical Specifications, Section 6.6.B.

BBS :jo Enclosure cc:

Director of Inspection & Enforcement ffe~-c-

?'

v.*

B. B. Stephenson St~tion.Superintendent Dresden Nuclear Power Station DireGJo.r of Managem.ent Information & Program Control File/NRC J

.l.

888

'CONTROL BLOCK: ~--'L-....&--'-'--*.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 11 111 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 9~:--:--:--~~-~------....,..-----,,.....,..~~-.,..,...,~__,,.-......,_;,..:.....,.,,.,,.,..,..,.,,..,,__,___.,,..__..,.._.;._ _______

. -.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* May~ 1976) specified *that I

T B: 9!:.":.-----------------------------~-__;,,-_.___:_ __

___,_~---....----8-10 (o]sl ~( '-.' _(;;;..?_)-'.'-$._l.l_rv_. e_i'-.)-'_ ~'-a"'""'.n-'.~'-.,e_i_* n..... t_e_r_v_a_l_e_x_t_e_n_s_i_o_n_s~w;_e._r:.;....e...... p._o_t_.,t_P..... _e_x_c_e_e_d--'2-'-5_.%..;.,_;,.o"'"'J"""-t"""h-e--'i'-n'-t'-e,;,;;;:*12;:.:.;":?';.::.:**~;::.~;;.::;-!.~,.:.;;,_il:;.;,11_d;;;;;...*.;..* -:::..*..:JI 7* 8 9 SYSTEM

. CODE

[§Illzlzl 7

8 9 10.

CAUSE

  • cooE L~J 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 ~I __

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 s~heduling by compute:r;. began until December 6, 1976, surveillance. I,

7. 8 9 80

~

~I _.... s_c_h_e_d_u_l_i_n.;:;.g_w_a_s_p:;...e_r_f_o_rm_e_d_o_n_a_* _f_r_e...:q;...u_e_n_c~y_b_a_s_is_. _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 ~-N_A ___

_.,,,I

~

7 8... 9.

10 12 13

.. 44

,,45 NA.

  • 46 80 CONTENT
  • FORM 'OF ACTIVITY RELEASED fil~l lzJ OF RELEASE AMOUNT OF ACTIVITY.

.. uJ t NA 1

10 1~1-*_...;.;.;.;_ _ __....;;.;... ____

  • ~44. I
  • NA

.. LOCATION OF RELEASE I

4~5-----...,...----------------""ao 7.. 8..

9 PERSONNEL NUMBER

[ill] l OJ. 0.1 0 I 7*. 8 9

.. 11 ExP.OSURES ;,: "

TYPE L~J 12 DESCRIPTION

  • NA.:

13 PERS'ONNEL-INJURIES NUMBER

'OESCRIPT.iON

/'

80 EEJ I 01 01 01 L-~N_A __ ~--------~--~~-------------------~-------~

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; __

.;,;;,Ra=l*p.;;;;h;,_V~*~*....;N;,;.;i;;;..mm..;.....;e;,_r;__ __.,...---------* PHONE:_E_X~. 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 surveill~nce inte.rval.. Sur:ve:i,llance interval vioJ~t.iq_i).s 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.

-~Y 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 suryeil~aru::.es 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 ipfonn~.tion is expected to be entered into the computer no later than February 28~ 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 re-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-.

?:--:---*-:, ***.-.-*-.. ;*":~-- *-*---.--.c.--~ *-:-**-**** *** * *** * :"":~*:... ~-... *--.-.. ---.::::*:-:.-;::-;-:":":"*:-':":~***t.*

,.,.>4 *. --";"~-

~:.. :.

~

~--

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~.. :,..

INSTRUMENTATION..

A,REA suRv. ~ *sURv.*

  • F
  • DES~RXPTIQN EREQ.

ITEM.NO. Q.

M.

-M***

M

  • M M

M 007 007 Scram

  • 1*
  • APRM Upscale, In6perafive: & Downscale

APRM Upscale, -Inoperative & Downscale 016:

.. *1

.Sfilf:Upscal.e':Rod. Bfock

.. 018 * **

3.RBM *upsGa*f:e -~nd Downs*cale: Rod. ;Block 019 0,19 02,3 028 Block-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.*

  • SPEC~
  • 4._2.1 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 In~erio~k 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 l-l:-1.7-]~.. ---*

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

.... -~~ :

6-18-76 To 9~28-76*1-19~1a To 10-28-76;8~17 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... ~.-fype. *of F~eq~~.ncy* ViOJ..ation.:

. :. * *1. "'". 1 Frequency Interval Plus 25% Exceeded

~.. *-

    • . * ' ** 3 *.,. 3. Tµne~ Nprmal Interval Plus Single* Interval 25% Exceeded.

'M c. ~sse_d Surveillance v*

,.. :*. 1.*

  • .*.. j **.. :
,.. *:: :t.. -..

. <*~~l >./'. =>--: > *.... '.....

... ~-

.~-

OP.ERATING A,REA SURV.

    • SURV.
  • F

'LREQ.. ITEM NO. 0.

  • DES~RIPTION

013

.3 Core Spray M.O. Valve Op~rability M

......9.!.:'L:.c.. )1 __..Jlj..gJ:i.

~~i=,J::-gy PJpirig Inspection*

  • M
  • 016
  • Pump Q.{)erab.i,li-~y *...,...

.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 ** *

  • sPEC~
  • 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 To-9~27~76 4.5.A 6-18.:..., 76 To_, sJ-:-)7.~76.

4. 7.A 4 a Not Done Ma'l or June 4.7.A.4.a 8-8-76 To 9-30-76
  • f--**

4~7.D 5-3-76 T6 8-29-76 6-ll-76:To 7-~1~76 4..s:c;:***:--

~ 7-2i-76 To 9~5-76'.

4.5.C 4.5.C

  • 6~11-76 To 7-21-l6*

7-21-76 To ~-5-76 *

. 5-4-76 To 9~5~76 Npt Done* Since. 5-4~ 7.6

~-:

. ~ t f **

.. *F.Q *. ~.Type 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

.. :_ 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

'*TECli;-

..SPEC~

  • DATES OF: EXCEEDED.LN-TERVA
  • . ~...

Reac.tor Water: ~S.91:;_<?.Pi.~:

.. 4.'6.C.l.b 9-15-76 To_l0-28~16 *

.. 'l._._ '.**...

-~~..

i-------+-...-.--~~r--r--~--~~~~~~~~~~~~~~~~~-t-~~~~~-t~~~~~--~.;.;...~_,.;..--~----~

..*\\:.

  • F.Q *.. =.Type of Frequency* Vi~ation:
  • *1.... 1 *Frequency Inter~al Plus 25% Exceeded*

3 *~ 3 Times Normal Interval Plus Single. Interval 25% Exceeded

'M c. Miss.ed. Surveillance

  • . ~.....

... *,

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