ML19329D904

RO 77-18:on 771118,reactor Operated in Restricted Region for More than Permitted 2-h.Caused by Belief That Reduced Power Would Result in Trip.Operators Directed to Follow Tech Specs,Even If Shutdown Results.Training Program to Be Given

ML19329D904
Person / Time
Site:	Rancho Seco
Issue date:	12/06/1977
From:	Colombo R, Eisenhuth F SACRAMENTO MUNICIPAL UTILITY DISTRICT
To:	NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION V)
Shared Package
ML19329D902	List: ML19329D901 ML19329D904
References
77-540, RO-771206, NUDOCS 8004070680
Download: ML19329D904 (1)

Text

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.C-JCENSEE EVENT REPORT CONTROL BLOCK:l l

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l (Pt. EASE PRINT ALL REQUIRED INFORMATION)

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TAuE UCENSE NUMBER 5I Oi Ic h l Rl sI sl il 10I.)l-10 1 01 01 01 01-10l0l Ic I i l il il il l 01 11 7 89 14 15 25 28 30 31 32 NRC COCKET NUMBER EVENT CATE REPORT DATE CATEGORY TYPE 01 CON'T l D l T l lI_j l Ll l0 l 5 l 0 l-l 0 l 3l 1l 2l l1 l1 l1l 8 l 7l 7l l1 l210 l 6 l 7 l 7 l 7 8 57 58 59 60 81 68 69 74 75 80 EVENT DESCRIPTION O

l On November 18. during a return to power following a 2-hour shutdown, the reactor was j 7 89 go.;

O l operated in the restricted region of Tech Spec Figure 3.5.2-1 for 8-1/4 hours and in l Ef 7 89 80 3E l the restricted region of Figure 3.5.2-5 for 5-1/2 houra. Operation in the restricted l 7 89 80 -

!reefnna 19 nemitted only for t 2-hour eeriod.

(RO-77-18) l 2

7 89

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80 EU l l

7 89 80 p,

CE DE CCMPONENT CODE SUPAUER VOLATEN O

l Rl Cl g l Z l Z l Zl Z] Z l Z l l Zl l Zl 9l 9l 9l lY l 7 89 10 11 12 17 43 44 47 48 g

CAUJE DESCRIPTION rv 3E I Goerators felt that required action (reduce power) would have aggravated the situation (

7 89 80 issued a directive statine'__l,.-

0 l evenem11v resultine in a trio'.

The Plant Superintendent 7 89 80 l that Tech Specs must be followed, even if a shutdown results.

l

-l FaCUTY METHOO OF STATUS

% POWER CTHER STATUS O'SCOVERY OSCCVERY CESCRIPTON y

l 0l 9l 0 l l NA l {

l NA l

1 7 8 9

10 12 13 44 45 46 80 CONTENT AELEASED OF AELEASE AMOUNT OF ACTMTV LOCATCN QF AELEASE EM UU Izj l

NA l

l NA ij j

7 8 9

10 11 44 45 80 -

PERSONNEL EXPOSURES NUMBER TYPE CESCRIPTCN gg l Oj0j0l ]

l NA l

7 89 11 12 13 80 PERSONNEL INJURIES NUMBER CESCRIPTON gg l0l0l0l l

NA l,

7 89 11 12 eg OFFSITE CONSEQUENCES l Minimal to none.

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1 7 89 80 LOSS OR DAMAGE TO FAC:UTY TYPE DESCRlPTON

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EB L;I I

ur 7 89 10 60 PUBLICITY mpj l Local newspapers and wire services notified November 29, 1977.

l 7 89 SO ADDITIONAL FACTOAS l A training program detailing how to prevent the situation experienced and how to l

89 80 correct the situation will be given to management and licensed personnel by 12/31/77.

R. W. Colombo /F. T Eisenhuth NAME:

PHONC-9 8 0 04 Og [PO M-

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