ML19332E493

From kanterella
Jump to navigation Jump to search
LER 89-014-00:on 891108,routine Radiation Barrier Check Identified Faulty Door Locking Mechanism on North Door to East Valve Trench Area.Caused by Welded Latching Mechanism. Locking Mechanism modified.W/891201 Ltr
ML19332E493
Person / Time
Site: Beaver Valley
Issue date: 12/01/1989
From: Noonan T
DUQUESNE LIGHT CO.
To:
NRC OFFICE OF INFORMATION RESOURCES MANAGEMENT (IRM)
References
LER-89-014-01, LER-89-14-1, ND3MNO:1989, NUDOCS 8912070290
Download: ML19332E493 (5)
v • d • e


Text

_ - _ - , . . ._

' g- x 1.h 4 ;. ,

6 i j ~-J -

, h..Yg.

=

.' 7% 4 7 . Telephone (412) 393 6000 jp , Nuclear Gtoup -

!~ . , , P O Bon d Shippmpport PA 1507M004 December.1, 1989

< ND3MNO:1989 r-- ,.

k

h. Beaver Valley Power Station,. Unit No. 1 J ,

Docket No. 50- 334, License No. DPR-66 LER 89-014-00

-United States Nuclear Regulatory Commission

-Gentlemen:

In accordance_with Appendix A, Beaver Valley Technical y Specifications, the following Licensee Event Report is submitted:

.LER 89-014-00, 10 CFR 50.73.a.2.1.B, " Barricaded But

, . Unlocked High Radiation Area Door".

Very;truly.yours, T. P. oonan General Manager Nuclear Operations

'~

lc).

o' Attachment s1 p>L

' l 4

.8912070290 891201 PDR ADOCK 05000334

'S PDC L

y , ,-- .

c'  ; e >

n - ,- l ,

E.; .Decemb r 1,-1989 4 " '

ND3MNO 1989 ,

Page two i Rec:,Mr.. William T.LRussell p

Regional Administrator United States Nuclear Regulatory Commission Region 1.

L 475 Allendale Road- "

King of Prussia, PA- 19406

-C. A'. Roteck, Ohio Edison Mr!. Peter. Tam, BVPS Licensing Project Manager United States Nuclear Regulatory Commission Washington,_DC _20555 1

J. Beall, Nuclear Regulatory Commission,-

BVPS Senior Resident Inspector Dave Amerine Centerior Enorgy 6200 Oak Tree Blvd.

Independence, Ohio 44101 INPO Records-Center Suite 1500 1100ECircle 75 Parkway Atlanta, GA .30339 G. E. Muckle, Factory Mutual Engineering, Pittsburgh

.Mr. J. N..Steinmetz, Operating Plant Projects Manager '

Mid Atlantic Area Westinghouse Electric Corporation Energy Systems Service Division Box 355 Pittsburgh, PA 15230 American Nuclear Insurers s

c/o Dottie Sherman, ANI Library .

Tho: Exchange Suite 245 270 Farmington Avenue

.Farmington, CT 06032 Mr. Richard Janati I Department of Environmental Resources I lP . O . Box 2063 16th' Floor, Fulton Building l Harrisburg, PA 17120 l Director, Safety Evaluation & Control Virginia Electric & Power Co.

P.O. Box 26666' One James River Plaza Richmond, VA 23261 l t'

a

^

s afRC Po,m 308 . - U 8, NUCLE AM 7.EGULAT&uY COMMIS$10N

.' APPIOYED OMS NO 3t960104 I g b LICENSEE EVENT REPORT (LER) * **'aE 8 C80" L , ACiuTY NAMi m . oOCm NUMetR m PAos a Beaver Valley Power' Station. Unit 1~ o is l 010 l 0 l 3 [ 314 1 lorl 0l3 f tTLE (4) h Barricaded But Unlocked Radiation Door EVENT DATI 15) LIR NUMetR (S) REPORT DATE 171 OTHER F ACILITIES INVOLVED ($1 MONT H DAY YEAR YEAR **0$$ h" $$ MONT H DAY YEAR F AceLITY evAwns DOC 8LE T NUMBtRt31 N/A 0l5l0l0l0 t l l f-

~~ ~~

Elj 1 0l 1 8 9 8l 9 0l1l4 0 l0 1l 2 0l1 8] 9 oi 5,o,o,o,  ; ,

,,,,,,,,,,, T us REPORT is su.MnTeo PUR UANT TO Tue REOUiRIMENT: O, 30 C,R s <co.. .,, ,, ,, ,, , ,.u...,,,, n u m- 5 a 40al n .0.m ank H2H., mu.i R 20 406teH1Htl 60 as(sH11 60 736sH2H.i 73.711st no, 0,0 i O n .Nnum ummm _

.nman.o _ =;yg,.yg,,,, ,

20 406(eH1Hdu x S0,734eH2H4 - 60.736a H2H.6dH A) J66A) 20 406(eH1Hivl 60.736sH2Hdl 50.73tsH2H.HiHS)

N 406toH1H.) 50.734aH2His4 50.73isH2Hsi LICENSEE CONTACT FOR THl3 LER 12 NiME TELEPHONE NUUSER

-Thomas P. Noonan, General Manager Nuclear Operations 4l 1 l2 6l4 13 l-1 121 l518 COMPLETE ONE LINE FOR E ACM COMPONINT F AILURE DESCR18ED IN THl8 REPORT 113)

C- RE' "

M*j' "'" L8 <

CAUS$ SYSTtu .COMPOedNT M( TO NPR C AU$E SYST E M COMPON E NT E TO NPR X XjX X;Xj X iX Xi Xi X] X N i i i l 1 i l- 1 I l l l l 1 l 1 I I I I SUPPLEMENTAL REPORT thPECTED (14l MONTM DAY YEAR Y$$ <le res tempwre EXPfCTED $ Ugh,lS$1QN QATE) NO l l l Aem ACT cu,,e a ra . s., ma..mr,, ,,n , -,,, wn. r ..e,,, i. , ns, On -11/08 (Operatin/89 at' 1716 hours0.0199 days <br />0.477 hours <br />0.00284 weeks <br />6.52938e-4 months <br />, with the Unit in Cold Shutdown

! p' g ' Mode 5), a routine radiation barrier check identified a- faulty door locking mechanism. The north barrier door to the East Valve Trench Area on the 722 foot elevation of the Primary

, ' Auxiliary Building was found closed and unlocked. This door was L last . verified at 0808 hours0.00935 days <br />0.224 hours <br />0.00134 weeks <br />3.07444e-4 months <br /> this same day. This door restricts access to a High Radiation Area. -A High Radiation Area is an area' -with .a radiation field of greater than 100 millirem per '

hour- but, less than 1000 Specification 6.12.2 requires High Radiation Areas to have millirem per hour (mrem /hr). Technical locked. doors preventing unauthorized entry. This event is being reported in accordance with 10CFR50.73.a.2.1.B, as a condition

.in violation of Technical Specifications. The cause for this

_ event- was attributed to a faulty door mechanism. The locking mechanism would- not operate correctly due to welded latching mechanism plate which interfered with the locking action of the door. The locking mechanism was modified. The interfering latch was removed. All involved individuals were counseled with regards to the proper verification of barrier doors. There were no safety implications HicJh Radiation Area as a result of

- this event. Personnel exposure records of individuals in

-controlled areas during this time period were reviewed and no anomalies were identified.

J. af,'.a= '" _ - __ ._. . --

cm -

1 b .

OfRC Pete 3004 - U.S NUCLEAR 5.ETULt.ToHY COMMIS810N

h. ~"*L*' . UCENSEE EVENT REPORT (LER) TEXT CONTINUATION atenoveo oMe wo uso-om cxeinss; sews FACILITY HAMt GU DOCKt1 NUMttM (2) ggg yggggg ggg pggg gg, YIA" vNa NusIm

- Biaver Valley Power Station, Unit 1 0 l5 l0 l0 l0 l 3 l 3l 4 8l 9 -

0l1l4 -

0 l0 Gl2 OF 0 l3 nc in n-. - = =ww. .= wanw we r== m*nnm j

DESCRIPTION v

On .11/08/89 at 1716 hours0.0199 days <br />0.477 hours <br />0.00284 weeks <br />6.52938e-4 months <br />, with the Unit in Cold Shutdown 1 (Operating Mode 5), a routine radiation barrier check identified a faulty door locking mechanism. The north barrier door to the East Valve Trench Area on the 722 foot elevation of the Primary

' Auxiliary Building was found closed and unlocked. This door was

, verified locked at 0808 hours0.00935 days <br />0.224 hours <br />0.00134 weeks <br />3.07444e-4 months <br /> earlier the same day. This door t '

' restricts access to a High Radiation Area. A High Radiation Area is an, area with a- radiation field of greater than 100 millirem per hour but less than 1000 millirem per hour

-(mrem /hr). Technical Specification 6.12.2 requires High Radiation Areas to .have locked- doors preventing unauthorized entry. Entry is controlled through the use of keys which are authorized- by the Nuclear Shift Supervisor. This event is being reported in accordance with 10CFR50.73.a.2.1.B, as a condition in violation of Technical Specifications.

. ROOT CAUSE OF THE EVENT The cause for this event 'was attributed to a faulty door mechanism. . The locking mechanism would not operate correctly due to welded latching mechanism plate which interfered with the locking action of the door. The latch was found to flip back around the~ plate area, disabling the door locking

. mechanism. ' Astriker visual- inspection of the-door in this condition s shows that the door appears to be closed and locked.

QORRECTIVE ACTIONS The following corrective actions have been taken as a result of '

.this event:

Immediate:

1. The area was immediately searched to ensure no l unauthorized individuals were in the area. No I individuals were in the area. I l
2. All individuals that signed out RB1X keys were l interviewed to identify individuals who accessed the I area.
3. Personnel exposure reports for individuals working in controlled areas, including those who has signed out RB1X keys were reviewed and no anomalies were encountered.

l

"A' C* A * ' ' ' ' # ' #

NRC FORM 368A -

f-? ' _}

Q '

9 *l }

1

, teNC Po,m ageA > U.5 NUCLfA2 KEIULATORY COMMIS810N $

a 1U c *1 LICENSEE EVENT REPORT _ (LER) TEXT CONTINUATION aernovto ous No. aiso-oim )

cxpints: sistise I

FACILITY NAME tu DOCKET NUMSLR (2) LtR NUMeta (6) PA04 (3)

F naa " =,; '^. ' .

Orf70 g . Beaver' Valley; Power Station, Unit 1 0 l5 [0 l0 l0 l 3l3 l4' 819 -

0l1l4 -

0l0 0l3 OF 0 l3 axiin - ., - , e cr.,,,,answii7, g

'l

\

j r

4. The-' locking mechanism was. checked and found ~to be- i faulty and cable tied to prevent recurrence. i 4

'5. All- individuals' were coun'seled with respect to the faulty mechanism and to- their responsibilities with ,

m regards to High Radiation Area Barriers, y_ Long term: 1 7

1. The faulty' locking mechanism was modified. The  !

interfering latch was removed. I 2.- A memorandum has been issued .to -radiation workers I qualified =to sign out RB1X keys which allow entry into 4

This memorandum requires the

_n 'high radiation areas.

individual to' perform a- hands on check of the closed a ,

radiation : barrier door to ensure that the door is positively-latched, prior to exiting the area.

'3. This event- and: its sigitificance,iation -Areaincluding the proper l

' technique--for checking High Rad Barrier Doors, will be' discussed in the RadiolocJical Operations Continuous Training Program and the Licensed Operator

' Retraining Program.

i REPORTABILITY l h This? event .'is being reported in - accordance with

10CFR50.73.a.2.1.B,.as a. Violation of Technical Specifications.

L l= ' SAFETY IMPLICATIONS y There were no safety implications as a result of this event. A R -review. of exposure records for personnel entering controlled .

areas 1 for the time period between the last verification of the

' t lt -locked door at 0808 hours0.00935 days <br />0.224 hours <br />0.00134 weeks <br />3.07444e-4 months <br /> and 1716 hours0.0199 days <br />0.477 hours <br />0.00284 weeks <br />6.52938e-4 months <br /> was performed. This

' review showed no anomalies for the time period.

l l

Foxu seen *u.s. c m 19ss-s20-Se') 4001o

. - _ -- - - -.- -

Retrieved from "https://kanterella.com/w/index.php?title=ML19332E493&oldid=2483732"