ML17252B501

LER 77-059/03L-0 for Dresden, Unit 2 Re During Normal Operation, Surveillance Program Review Revealed Violation of T.S. 1.0.CC.b Maximum Combined Interval Time by 6.5 Days for HPCI Monthly Valve and Pump Operability

ML17252B501
Person / Time
Site:	Dresden
Issue date:	11/23/1977
From:	Stephenson B Commonwealth Edison Co
To:	James Keppler NRC/RGN-III
References
BBS LTR 1094-77 LER 77-059/03L-0
Download: ML17252B501 (4)

Text

C~mmon.h Edison l1

• Qresden Nuclear Power Station R.R. #1 Morris, Illinois 60450 Telephone 815/942-2920 ArnuLAroav DOCKET f1l.E COPY November 23, BBS LTR 111094-77 James G. Keppler, Regional Director

.Directorate of Regulatory Operations - Region III U.S. Nuclear Regulatory Commission 799 Roosevelt Road Glen Ellyn, IL 60137 Reportable Occurrence Report #77-059/03L-0, Docket #0~0-237 is hereby submitted to.your offic-e.in accordance with Dresden Nuclear Power Sta-tion Technical Spec;i.fication *6.6~B.2. (c), observed inadequacies in the implementation of administrative controls which threaten to cau*se re-duction of degree of redundancy provided in engineered safety feature systems.

tell enson Station Superintendent Dresden Nuclear Power Station BBS:dlz Enclosure cc: Director of Inspection & Enforcement Director of Management Information & Program Control File/NRC

I NRC FQ~fy'I 3,6 U.S. NUCLEAR REGULATORY .COMMISSION (7-7J.) . !/

• LICENSEE EVENT REPORT CON TR QL BLOCK: .____.__ _.____,__~__._ _,10 (PLEASE PRINT OR TYPE ALL REQUIRED INFORMATION) 6

~ I I I LI DI RI s I 2 101 0 I0 I- I 0 I0 I0 I0 I0 I- I0 I0 101 4 11 I ll aj :Y01 I 10 7 8 9 LICENSEE CODE 14 15 LICENSE NUMBER 25 26 LICENSE TYPE 30 57 CAT 58 CON'T C£:DJ  :~~~~~ W© I o I s I o I o I o I 2 I 3 I i 101 1 Io 12 I6 I 7 I7 I© 11 I1 I2 I 3 I 7 I 7 IG) 7 8 60 61 DOCKET NUMBER 68 69 EVENT DATE 74 75 REPORT DATE 80 EVENT DESCRIPTION AND PROBABLE CONSEQUENCES@ * . .

~ I During normal unit 2j~) operation, surveillance program review revealed violation of

. C-1

[Q]I) I T.S.1.0.CC.b maximum combined interval time by ~.5\days for HPCI monthly valve and

~ pump operability. This event had little safety significance since the HPCI-pump and

[£))] valves operated normally when the late surveillance was performed. Previous surveil-

[Q:JI] lance interval discrepancies were reported in LER's 50-237/77-6; 50-249/77-6, 31;

[EJ2J I s0-237/76-71; 50-249/76-36.

7 8 9 80 SYSTEM CAUSE CAUSE COMP. VALVE.

CODE CODE SUBCODE COMPONENT CODE SUBCODE SUBCODE

[ill] I zl zl@ w@. w@ ZI zJ Z*I ZI ZI z1@ ~ ~@

7 8 9 10 11 12 13 18 19

• 20

. 'SEQUENTIAL OCCUR REN CE REPORT REVISION

~ LE R/RO LVENT YEAR REPORT NO. COD6 TYPE No:

~ REPORT I 71 71 I I I 01 SI 91 . I ........ , I 0I 3 I ~ I I. ~

NUMBER 21 22 23 24 26 27 28 29 30 31 32 ACTION FUTURE EFFECT SHUTDOWN r:;::;\ ATTACHMENT NPAD-4 PRIME COMP. COMPONENT TAKEN ACTION ON PLANT METHOD . HOURS ~ SUBMITTED FOAM SUB. SUPPLIER MANUFACTURER L!!J@W@

33 34 W@

• 35 0 LJJ 36 10101010 37 40 I LU@

41 .

UJ@

42

~@

43 Iz 44 J9 J9 19 47 I@)

CAUSE DESCRIPTION AND CORRECTIVE ACTIONS @ .

Manual tracking of*HPCI surveillance combined interval was overlooked resulting in

j.ts late performance. A new computer surveillance tracking system has been institu- .!

ted which provides each department a week~y list of surveillances. due based on both o:::ITJ I . single and comb.ined interval requirements. Th+/-s corrective action should be suffici-1 ent.

ITIT1 7 8 9 80 FACILITY METHOD OF A STATUS  % POWER OTHER STATUS DISCOVERY DISCOVERY DESCRIPTION ~

ITIT1 ~@ IOISJ4l(§~I~~-NA~~-- W@JL-.__R_e_v_i_e_w_o_f_s_u_r_v_e_1_*1_1_a_n_c_e_r_e_c....;q....;r_d_s_____.

8 9 10 12 13 44 45 46 80 ACTIVITY CONTENT ~

RELEASED OF RELEASE AMOUNT OF ACTIVITY . LOCATION OF RELEASE.

NA 136'

\31 C2:fil L.:J @)

7 8 9

~@I 10 11 NA 45 44 80 PERSONNEL EXPOSURES ~

NUMBER ~TYPE DESCAIP.TION

• ITI?] I oI oI ol0Lz..l@.____________-""'"'.......________________,

B 9 11 12 13 80 PERSONNEL INJURIES f,;":;\

NUMBER DESCRIPTION~

l2:fil al oI al@L..._____________ ..u.i;i.__ _ _ _ _ _ _ _ _...:...___ _ _ _ _ .

7 8 9 11 12 80 LOSS OF OR DAMAGE TO FACILITY f43\

TYPE DESCRIPTION v::::J

[QI) LJJ@ .. NA 8 9 10 80 PUBLICITY Q\

ISSUEDQ DESCRIPTION~ N RC USE ON Ly "'

rI:I2J Llil~------------------N_A_ _ _ _ ____, I I I I I I I I I I I I I~

8 9 10 68 69 80 ;;;

M. Parcell. 265 0 0.

NAME OF PREPARER~----------------- PHONE=--------------

i .

..,... J~,.:'*a/

~ - ... * ..

• • ATTACHMENT *TO LICENSEE EVENT REPORT 77-059/03L-0 COMMONWEALTH EDISON.COMPANY (CWE)

DRESDEN UNIT 2 . (ILDRS-2)

DOCKET # 050-237 ..

k,J

. During nornial Unit /\ operation, a review of co.,,pleted surveillances revealed that the intervals between completion of the.HPCI monthly valve

• and pump operability surveillance had exceeded the ma:>timum. combined time interval for any three consecutive intervals of 3.25 times. thg._spect:fied si.Iigle surveillance interval by 6. 5. days~i. .

.**.*** *-.~--~~-

.e:::cc.:b,}...'" . r >.~~:_,,_::_-=-*-~ . -~~~

The surveillance was performed on the following dates: **.-.

D-2 M.:iy' .. 28 .

• .July . 2 *

.. Aug , 2 . *. -.. ,_.,

• . .-*:-. - *. *:,, *.*Sept:. 10.

• "  ; -*When the HPCI surveillance is perforined within the maxinium single inter-Val

• _._**. * ** period, it. is still possible fo exceed the maximlim co~t>.ined. interval. for ** ..

_. . any three consec~ti ve intervals. The manual tracking. ()f the HPCI .su:iveil-

\' lance combined interval was overlooked; resulting in late performance of the surveillance. In order to prevent surveillance inter:v(ll discrepancies,_ .*... - -.:*

.  :**** . ' a new compute~ surveillance. tracking and mqnitoring* system was instituted .*

• on .8-1-77. This system utilizes both the. singl~ int.ental and combi11ed inter""'..

• val requirements. to determine a due date* and a latest date due. .A weekly_ . **

• surveillance list. is sent to each d~partment listing the surveillances due . '.,;

the next week. As the. surveillances are performed,_ the completion date is

• entered into the. computer for use in future due date determinatio~s. : After*** * .

. initiation of the new system, however, three* intervals*. are required for. the ....:

. * *. * *. system to become effective iri preventin:g exceeding, the combined interval ..

• ,:

• requirements~- This* *is* the reason *the* surVeili~nce in*terva1 was *excee_ded .-

after. .implementation of the new computer system *.* Nb additiori.;_-1 lorr~~tive >

. action is. planned. *

• This* even_t h_a:d l_ittle safety significance since the HPCI pump and* valves * *

• operated normally wheri the late surveillance was performed. Previous .sur-

.veilla:nce interval discrepancies were reported *in LER's. 5.0""'.237/77~6; ..

50~249/77-6, 31-; 50-237/76...:.71; 50-2,49/76-36. . .

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