ML19210D367

LER 79-034/03L-0:on 791103,excessive Leakage Rate Noted on Personnel Access Hatch.Caused by Loose Mounting Bolts on Exterior Door Operating Rod Packaging Gland.Bolts Were Tightened.Interior Door & Glands Were Satisfactory

ML19210D367
Person / Time
Site:	Millstone
Issue date:	11/20/1979
From:	Stratman R NORTHEAST UTILITIES
To:	NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION I)
Shared Package
ML19210D365	List: ML19210D364 ML19210D367
References
LER-79-034-03L, LER-79-34-3L, NUDOCS 7911260363
Download: ML19210D367 (1)

Text

NRC FORM 3G6 . .

(7 77)

. LICENSEE EVENT REPORT (PLEASE PRINT OR TYPE ALL REQUIRED INFoRMATION) e CONTROL DLOCK: l 1

l l l l l lh 6

o i ClTLICENSEE lM IN lS l214l@l15 0l 0l -l 0 l Ol Ol 01 -l O l 01 O25l@l26 4 l LICENSE LICENSE NUMBER l l 1 l lVPE 1 l JO l l@l57 CAT l b8 l@

7 8 9 CODE C oN'T o i SO nC LLj@l015l0l010l313l6l@l11110l3I7l9l@l1l1l?l017l9l@ G8 69 EVENT DATE 74 75 REPORT DATE 80 7 8 60 61 DOCKET NUMBER EVENT DESCRIPTloN AND PROBABLE CONSEQUENCES h o 2 I While shutdown and nerformino routine si'r tillance on the containment oersonnel I

~

o a I access hatch, a leakage rate in excess of the limit allowed by Section 3.6.1.3.b I o 4 I of the Technical Specifications was noted. The excessive leakage was the result i IoIsl I of a leaking cland on the exterior door operating rod. The gland was repaiied '

I lo lij l and the surveillance satisfactorily ccmo_leted. There are no probable consecuences I o 7 l of this event, since the plant was operated in accordance with the Action Statement I o a i of Section 3.6.1.3 of the . Technical Specifications. Similar occurrences: none. I 80 7 8 9 SYSTEM CAUSE CAUSE COMP. VALVE CODE CODE SUBCODE COMPONENT CODE SUBCODE SUSCODE 10191 l Sl Al@ [_E_j@ l B l@ ! Pl El Ni El Tl R[@ l A @ LZj 20 7 8 9 10 11 12 13 18 19

,,,,, SEQUENTIAL OCCURRENCE REPORT REVISION LE R/RO EVENT YE AR REPORT NO. CODE TYPE N O.

O nuRtg l217l9 22 l-l 23 l 0l 31 - 41 24 26

]/l 27 l0 l3 l 28 29 l30 Li [.--J 31 J

32 KN A TO ON PL NT 1T HOURS 22 S 8 IT FO 1 B. SU PLI MAN F CTURER

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33 34 Z l@ l_Z_j@

35

[36_

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40 l Njg INlg di 42 43 Al@ lC 44 l3 l1 l0 [g 47 CAUSE DESCRIPTION AND CORRECTIVE ACTloNS h 111011 The cause of the excessive leakage was loose mounting bolts on the exterior door l li li l operating rod packing gland, piece 59 as shown in Figure II of Chicago Bridae and i 2 1 Iron technical manual 69-5709U. The bolts were tightened. No through containment l ITTTl I leak' path existed since the interior door and glands we.e found to be satisfactory. I i 4 l l 7 8 9 80 A S  % POWER OTHER STATUS IS O RY DISCOVERY DESCRIPTION i s [Gj @ l010l0l@l NA l lB[@l Surveillance Test l A!TiviTY ColiENT RELEASED OF RELE ASE AMOUNT OF ACTIVITY LOCATION OF RELEASE i o 8 9

[Zj @ l10Zl@l NA l l NA l 7 11 44 45 80 PERSONNEL EXPOSURES NUMBER TYPE DESCRIPTION i 7 1 0] 0[0l@lZl@l ' "

t l

PEnSONNE't is;u'ifiE S NUMBER DESCRIP TION 7

i a 8 9 l01Ol0l@l 11 12 NA 80 l

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'$5, T tsc"^,G,E ogTD FACILITY @ q] ;j g 7

9 8 9 W @l to NA 80 l

ISSU E n DESCRIPTION 7Q}lg6Q 3 "" "

2 o L'U8110 NA 1 l l l l ; I l 1 l l l l l ;;

7 8 9 68 69 80 5 Robert A. Stratman 203-447-1791 EXT. 544 o

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