ML19308D260

RO-77-01:on 770101,wall Crack Discovered in Eight Inch Schedule 40 304 Stainless Steel Bldg Spray Pipe Inside Containment Bldg.Caused by Stress Corrosion Cracking Due to Chlorides & Oxygen.Investigation Continuing

ML19308D260
Person / Time
Site:	Crystal River
Issue date:	10/03/1977
From:	Stewart W FLORIDA POWER CORP.
To:
Shared Package
ML19308D116	List: ML19308D115 ML19308D260
References
NUDOCS 8002270710
Download: ML19308D260 (1)

Text

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• ICENSEE EVENT , REPORT k~q

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CONTROL stOCx:l l l l l l l cPums namT au.neouinao mFoama i 1 S AME LCENSE NUMBER P PE O

7 89 l FlL lC l Rl Pl 3l l 0l 0l-l0 l 0 l 0l 0l 0l-l0 l0 l l 4 l 1 l1 l 1l 1l l0l1l 14 15 25 26 . 30 31 32 CATEGORY Ty p S E oOCMET NUMBER EVENT DATE AEACRT DATE O 1 CONT l l* l l0 l 5 l0 l-l 0 l 3 I O l 2 l l0 il l0 l1 l 7 l 7l l 0l 1l0 l3 l 7 l 7 l 7 8 57 58 59 60 61 68 69 74 75 ,80 EVENT DESCRIPTION Hg l Discovery of a through wall crack in an eight inch Schedule 40 304 stainless l 7 89 80

@l 7 89 steel building spray pipe inside the containtnent building. Crack is in heat 80 l

3E l af fected zone of a pipe-to-oipe weld. The system contains stagnant water. l 7 89 eo HE I l 7 8 eg

@9 7 89 l

(77-1) so l

SYSTEM CAUSE CCMPONENT COMPONENT CCCE CODE CCMAONENT C00E SUPOLER MANUFACTURER VOLATON SE l S l Al y lP l Il Pl Ej Xl X l lAl l Kl 0l 5l Sl lN l .

7 89 10 11 12 17 43 44 47 48 CAUSE DESCRIPTION .

3G l Suspected stress corrosion cracking due to presence of chlorides and oxygen at a l 7 89 eo SE I location subject to several weld repairs. Investigation is continuing in accord- l 7 89 80 DE l ance with IE Circular 76-06.

'sE s powEn oTHEn status "as$tSvEny osCoVERY DESCRATON 1

7 8 9 y l0l0l0l l Mode 5 l J45 l Leakage noted by plant operator l 10 12 13 44 46 80 ,

a7LEWASDGP RE ASE AMOUNT OF ACTMTV LOCATON CF AELEASE 1

7 8 9 U l,_ J 10 l

11 NA l 44 l

45 80 l

PERSONNEL EXPOSURES NuMsER TYPE CESCAPTCh BE I I I I Ul NA l 7 89 11 12 13 80 PERSONNEL INJUAIES NUMBE R DESCAPTON BE I I I i l NA l 7 89 11 12 80 OFFSITE CONSEQUENCES NA 3G I I 7 89 80 LOSS OR OAMAGE TO FAC:UTY TYPE DESCAPTON NA l 7 89 10 80 PUBUCITY 1 l NA I 7 89 80 AOCITIONAL FACTOAS 80022707/O i ni 7 89 NA el l l 7 89 80 NAME: ti . P. Stewart / - '

PHONE: (813) 866-4159

,, ',7 ,, GPO 001 407 i

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