ML17252A258

From kanterella
Jump to navigation Jump to search
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~~~!~~8'.\

R.R. #1

  • * , \~ L;I . .. .

Morris, Illinois 60450 *~

Telephone 815/942-2920 egufatqry*

........___R- -

.lf.V~. Cy.

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 ..-~

E~closed please find Reportable Occurrence report number This report is being submitted to your office in accordance .~wi-th ,the Dresden Nuclear Power Station Technical Specifications, Section 6.6.B.

ffe~-c-

?' ,-:;.. ::;,

B. B. Stephenson v.*

St~tion.Superintendent Dresden Nuclear Power Station BBS :jo Enclosure cc: Director of Inspection & Enforcement 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 LICENSE EVEN.T NAME * . LICENSE NUMBER TYPE TYPE

@E] Lr I LI nlRls I 31 I oI o1-\1 oIo Io I o I o1-1 oI oI I 4 I 1 11 111 1 I I0I 31 7 8 9 14 15

  • 25 26 30 31 . 32 REPORT . REPORT

, CATEGORY TYPE.' SOURCE DOCKET NUMBER . EVENT DATE REPORT DATE

@El CON}

7'*" 8*

I I I

  • 57 . 58 w 59 LIJ 60 I61oI s I o 1-1 oI 21 AJ** 9s0**I
  • 69.* t 1 J* 2**** I* _2* I ) I .1 I 674I I75o Lt P JQ..J.7* L100I 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.

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

I sectJon 1.0. c. C (a) and (b) .(which becam'e ef'fectTve in* May~ 1976) specified *that

_____,_~---....----8-10I (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 PRIME 80 SYSTEM CAUSE COMPONENT ;coMPONENT. * (Continued)

. CODE *cooE .. COMPONENT CODE

  • SUPPUEA MANUFACTURER VlOLAOON

[§Illzlzl L~J Iz I z I z I zI zI z117. ..

12 .

~* I z 19 19 I 9 I ~

7 8 9 10 . 11 43. 44 47 48 CAUSE* DESCRIPTION .

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_te_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 EEJ ~

STATUS \Iii POWER I 0I9 I3 I OTHER STATUS

~-N_A_ _ __., ,I

  • DISCOVERY

~ NA.

DISCOVERY DESCRIPTION 7 8 ... 9. 10 12 13 .. 44 ,,45 *46 80 FORM 'OF ACTIVITY CONTENT

  • RELEASED OF RELEASE AMOUNT OF ACTIVITY . . I* NA .. LOCATION OF RELEASE I fil~l 7 .. 8 ..

lzJ .. uJ 9

10 t NA 1~1-*_...;.;.;.;_ _ __....;;.;..._ _ _ _*~44 1 4~5-----...,...----------------""ao PERSONNEL ExP.OSURES ;,: " *,

/'

. NUMBER TYPE DESCRIPTION *

[ill] l OJ. 0.1 0 I L~J NA.:

7*. 8 9 .. 11 ..12 13 80 PERS'ONNEL- INJURIES

. NUMBER 'OESCRIPT.iON EEJ I 01 01 0111 12L-~N_A__~--------~--~~-------------------~-------~

7. 8 9 80 OFFSITE CONSEQUENCES EE
7. 8 9 NA.

80 LOSS OR DAMAGE TO . FACILITY TYPE DESCRIPTION

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

.. filZ] NA.

80 7 8 9 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* I t 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 *. --";"~-

. .. . ..... . . ~: ..:.

..-* ~

..* :t::

.. . :~ . . : , ..

~-- INSTRUMENTATION..

A,REA

. suRv. ~ *sURv .* *F . '*tECH.*

EREQ. ITEM.NO. Q.

  • DES~RXPTIQN DATES OF EXCEEDED.LN-TERVA'
  • SPEC~
  • 1*
  • APRM Upscale, In6perafive: & Downscale 4._2.1 8-17-76 To 9-28-76 -.:::*;
  • . Scram 7-19-76 To 10-28-76 M. 007 3 APRM Upscale, -Inoperative & Downscale 4.2~1 :8-17-76 To 11-:29-76 4.1. 2 016: .. *1 .Sfilf:Upscal.e':Rod. Bfock 4.2.1 11 76. Tp H'-13::)Q___ .

-M*** .. 018 * ** 3 .RBM *upsGa*f:e -~nd Downs*cale: Rod. ;Block . 4.2.1 8-7-76 Jo l-l:-1.7-]~.. ---*

Block-M 019 l APRM Flow Bias Upscale & *nownscale *.Rod 8-17-76 To 9-:;-28-:7.6 ..

.... -~~ :

  • M 0,19 *3 APRM Flow: Bias Upscale ..& Downscale Rod Block 4.2.1 6-18-76 To 9~28-76*1-19~1a To 10-28-76;8~17 To ll-29-<

M 02,3 1 Main Steam Line High Flow Isolation_ 4.2.1 6...:19-76.To 7-30..:. 7.6

.IiC2.J.a.e:J.01 ..

M 028 1

  • Isolation Condenser Steam Line High Flm 4.2.1 9-15-76 To 10-24-76*. ',':;.'*

~

Isolatio1 '.

M 029 1 Isolation Condenser Condensate Line Flrn 4.2.1 9-15-76 To 10-24_:.76 M 042 1 Containnient Spray In~erio~k ECCS * (2) *' 4. 2 .1 8-17-76 *To 9-30--76 M 042 3 Containment Spray Interlocks ECCS (2) 4. 2.1 ... 8-:17-76 To 12-4-76 M 051 3 Rx Bu.ilding CCW .Radiation Monitor 4.8.C 6-:14...:76 To 9-29-76**

M 052 1 _Servic:e Water *R.aaiatfon *:Monitor 4.8.C ... *. 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
  • DES~RIPTION *

.'*'.rECH ** *

'LREQ. .ITEM NO . 0. *sPEC~

  • DATES OF EXCEEDED.lN-TERVA:.

012 3 Core Spray Pump Operability 6-18-76 Io 9-27-76 M. 013 .3 Core Spray M.O. Valve Op~rability 4.5.A M ..... .9.!.:'L:.c.. )1 __ ..Jlj..gJ:i. ~~i=,J::-gy PJpirig Inspection* 4.11 Not Done* June :Thru -Sept ..

--i

  • M * *016
  • Pump Q.{)erab.i,li-~y * . . . , ... 4.5.A 6-18-76 To-9~27~76

.M .* 017 3 : -LPCI M. 0. Valve Operability 4.5.A 6-18.:..., 76 To_, sJ-:-)7.~76 .

M 022 M Torus/Drvwell *Vacuum Bre<itker Cvclirti? 4. 7.A 4 a Not Done Ma'l or June 022 1 Torus/Drywell Vacuum Breaker Cycling 4.7.A.4.a

  • f--**

8-8-76 To 9-30-76

,. i 02_3 i 1 MSIV Trip and Timing 4~7.D 5-3-76 T6 8-29-76

.:...,_- 6-ll-76:To 7-~1~76 M* 028 1 HPCI Pump Oi:ierabilitv 4 . .s:c;:***:-- ~ 7-2i-76 To 9~5-76' .

    • , .... 6~11-76 To 7-21-l6*

... M 029 1 HPCI M.O. Valve Operability 4.5.C 7-21-76 To ~-5-76 *

. Q 030 1 HPCI Flow Test* 4.5.C * . 5-4-76 To 9~5~76

. :_g:

  • 047 . M Abnormal Procedure Dd:lL Npt Done* Since. 5-4~ 7.6 ** .

. *~ .

. 1*

.~-: .*

. ~t

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

  • f **

" .. *F.Q *. ~.Type of Frequency" VicU.ation: .. ***- :: .*.: . ..*....

  • * :1* * .. 1 Frequency Interval *Plus 25% Exceeded 3* .. 3 Times Normal. Interval Plus Single Interval 25% Exceeded .

,:... :._':: *. "M

~* - '

1 :*:-.*.:

f- . .::-.. . '

.. :_ i: ...:

...;.'I

~ *:. '.

y

. Y. .

. . t ..

. .:*I ., ....

  • - I . .** ..

-:.~

j j *

  • ~ . ~\ ,' ...

RAP-CHEMISTRY .. ;.

A.REA SURV. S.URV. * *F .

  • DES_CRIP!LON

'*TECli;-

'EREQ. * . ITEM .NO. Q. ..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

    • . *. ~ ..... . ..*,
Retrieved from "https://kanterella.com/w/index.php?title=ML17252A258&oldid=2509310"