05000302/LER-1983-053, Updated LER 83-053/03L-1:on 831109,safety-related Hydraulic Snubber MSH-252 Declared Inoperable When Lack of Oil Level Indication Noted in Sightglass.Caused by Loose jam-nut on Stationary End of Snubber,Allowing rotation.W/8401

Updated LER 83-053/03L-1:on 831109,safety-related Hydraulic Snubber MSH-252 Declared Inoperable When Lack of Oil Level Indication Noted in Sightglass.Caused by Loose jam-nut on Stationary End of Snubber,Allowing rotation.W/840106 Ltr

ML20086G815
Person / Time
Site:	Crystal River
Issue date:	01/06/1984
From:	Bufe J, Westafer G FLORIDA POWER CORP.
To:	James O'Reilly NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION II)
References
3F0184-07, 3F184-7, LER-83-053-03L, LER-83-53-3L, NUDOCS 8401120414
Download: ML20086G815 (3)

LER-2083-053, Updated LER 83-053/03L-1:on 831109,safety-related Hydraulic Snubber MSH-252 Declared Inoperable When Lack of Oil Level Indication Noted in Sightglass.Caused by Loose jam-nut on Stationary End of Snubber,Allowing rotation.W/840106 Ltr

Event date:
Report date:
3022083053R00 - NRC Website

text

__ .

._. . __ ._ _m . __ _ = ____ m. _ _ _ _ _ _ _ _ _ _ _ _ _ . _ .

4

" Update Report - Previous Report Date December 12, 1983"

. aset Tomas me (A 3. asWCLEm3 KEIULt.T*JIY consaseggsow *

.' LICENSEE EVENT REPORT eptsaos eming on tves att neovineo in.onwarious EXHIBtT A cosetno6 stoca: l l l l 1 1 .l@

.(

l lF1LIClRlPI3l@i.l0

. o.. .. 10 l- 1010 ]

".,0 l 01 -10 ] 0lgl 4 l 1l1 l 11 1lg g

co v .

Q C %I0l 510 t-l013 l 012Gl11110191813 eve =v osscaserios ano emosaat: coassousaces gl,0 ; 1;016; 8; 4lg . .

l t m ion November 9, 1983, during a rou vimial inspection one safety related ,

,, i ydr=ilic.h sruthr (MSH-252) ms harved to have no oil level indication in ,

i rio [.tila_g.ichtalass. 'Ihe snubber as declared inoperable at 1400 (T.S.3.7.9.1.) ,1 c m land maintenance e s initiated. MSH-252 was replaced on Novernber 10, 1983, ,

, m ,and operability a s restored at 1800. 'Ihis is the ninth occurrence reporteq i , iunder T.S. 3.7.9.1. I gI . -

t

• ** ~

.'u'." *e f . 4. t.n!,.

@ @ @ l S Ul PlO l RIT l@ .o.%@ @ .

= .

~~ ,= ~=- .

@ =.. ,L84! _

b=1  !?' 5' J l# @i! O IFl IfJ e= .=, m=- >=r =..= . = =..

. ks%s!@ LU@ IPO '? ' ' a' J !?l@ E- l@ !!J@ 6n J .,'@ .

l cause oescai,viou a=o conaeenvs actions @

E IIhis event was can=aa by a lmaa iarn-nut on the stationary end of the i g isrinbr,'which allowed the srnihr to rotate'. As the snubber rotated, the i g , fluid drained out. MSH-252 was replaced with a spare snn h r. Operability ,

twas restored on Novernber 10, 1983, at 1800. Procedure MP-130, Pipe Snubber

.- /4aintenance, will be revised to ensure proper srmhr orientation is maintaiped.

' ~

'b'T . . = = wi n.,w @ E!E.**iN Operator bov e bYE @

i. g_)@ l019 17l@l N/A l gl l

.a,. , a '= - - -

u. -

=6 =te .

..evivin @ l 6.c... t... @

U LZ_) l N/A

~

l

~

N/A

~

I I NIg,@..@g,.. Oj LZ.l@l . - e.

l i> N/A l ,

..,,,,,,,,,,,,2,, ,,,,,

i. .

.= l0 Yl" 0l@l "**" N/A l l

• I,y, ,,.gc,)..c.un g

l! j@l N/A g

' '* v ,. .

~

N/A .  ; ; ,"," , "f,,g E.. b. @l. J.F. Rife' OOD 795-3802

=awso, pas .. .

4 8401120414 840106 -

'[

PDR ADOCK 05000302 PDR . ..,., ,

S

" Update Report '- Previous Report Date December 22, 1983" SUPPLEMENTARY INFORMATION

. REPORT NO : 50-302/83-053/03L-1 FACILITY: Crystal River Unit 3 REPORT DATE: . January 6,1984 ,

DATE OF OCCURRENCE: November 9,1983 IDENTIFICATION OF OCCURRENCE:

' One ' safety-related hydraulle snubber, MSH-252, was inoperable on November 9, 1983, contrary to Technical Specification 3.7.9.1.

CONDITIONS PRIOR TO OCCURRENCE:

Mode 1,97% FP DESCRIPTION OF OCCURRENCE:

On November 9,1983, during routine visual inspection, the sightglass for snubber MSH-252 (Main Steam System) indicated no oil level. It was also observed that the snubber had rotated to another position. The snubber MSH-252, was declared inoperable at 1400 and maintenance was initiated.

ANALYSIS OF OCCURRENCE:

There was.no significant effect on public health and safety as a result of this

i. . occurrence since the probability of seismic events in the peninsula'of Florida is

. very low and considerable safety margin is maintained in piping stress analyses.

DESIGNATION OF APPARENT CAUSE:

This event was caused by a loose jam-nut on the stationary end of the snubber which allowed the snubber to rotate. As the snubber rotated, the fluid drained out.

. CORRECTIVE ACTION:

! MSH-232 was replaced with a spare snubber. Operability was restored on l November 10,1983 at 1800.

' Procedure MP-130, Pipe Snubber Maintenance, will be revised to ensure proper snubber orientation is maintained.

' FAILURE DATA:

This is the ninth occurrence reported under Technical Specification 3.7.9.1.

F .

i oxo so u, x,oha t

o .,

4(

a t( s>w. POO*e

( e C'0 o a o

aao, M

P.o. n . .e. . n .wr

,o January 6,1984 3F0184-07 Mr. James P. O'Reilly Regional Administrator, Region II Office of Inspection & Enforcement U.S. Nuclear Regulatory Commission ,

101 Marietta Street N.W., Suite 2900 Atlanta, GA 30303

Subject:

Crystal River Unit 3 Docket No. 50-302 Operating License No. DPR-72.

Licensee Event Report No.83-053, Revision 1 .

Dear Mr. O'Reilly:

Enclosed is Licensee Event Report No.83-053, Revision 1, and the attached supplementary information sheet, which are submitted in accordance with Technical Specification 6.9.1.9(b). This change corrects a typographical error in the component manufacturer code.

Should there be any questions, please contact this office.

Sincerely, o

G.R. Westafer Manager Nuclear Operations Licensing and Fuel Management DVH/feb Enclosure cc: Document Control Desk U.S. Nuclear Regulatory Commission Washington, DC 20555

. i. . ,;[Y

}YII G ENERAL OFFICE 3201 Thirty fourth street south e P.O. Box 14042, St. Petersburg, Florida 33733 e 813-866-5151