ML19317F896

RO-77-02:on 770218,auxiliary Feedpump P-319 Removed for Maint.On 770219,auxiliary Feedpump P-318 Steam Drive Found Tripped.Caused by Improper Trip Reset When P-318 Was Stopped by Manual Trip.Special Training Will Assure Reset Methods

ML19317F896
Person / Time
Site:	Rancho Seco
Issue date:	03/14/1977
From:	Mattimoe J SACRAMENTO MUNICIPAL UTILITY DISTRICT
To:
Shared Package
ML19317F893	List: ML19317F892 ML19317F896
References
NUDOCS 8002210622
Download: ML19317F896 (1)

Text

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UCENSEE EVENT REPOf t,

CONTROL BLOCX:l l

l l l l )

(pLEASE PRINT ALL REQUIRED INFORMATION) 1 6

Auf UCENSE NUMBER TY E j C l A l Rl SlS ll'l l0 l0 l l 0l0 l0 l0 l0 l_ l 0 l 0 l l4l1l1l1l1l l0 l1l 7 89 14 15 25 26 30 31 32 CATEGORY TYP AC OCCKET NUMBE.,

EVENT DATE REPCAT CATE 01 CONT l P l I l l Ll lL l l0 l 5 l 0 l-l 0 l 3l1 l2 l l 0 l 2 l 1 l 8 l 7 l7 l l0 l3 l0 l9 l 7 l 7l 7 8 57 58 59 60 61 68 69 74 75 80 EVENT DESCRIPTION gg l During normal rounds on February 19, 1977, an Operator discovered the steam drive to l

7 89 80

.A Q l auxiliary feedpump P-318 tripped. The reduz.Jant auxiliary feedpump P-319 was out of l Ei 7 89 80 '

$ l service the previous day, so during that period no auxiliary feedwater flow was l

7 89 80 -

h I wnfinhie on safety features.

(R0 77-2) l 2

7 39 80 bl l

7 89 80 mE

$COE CCMPONENT CCCE SUPPLf.R M

VOLADCN RE l Hl 5l W l P l Ul Ml Pl X l X l lAl l Bl 0] 1l0 l lN l 7 89 10 11 12 17 43 44 47 48 g-CAUSE DESCAPTION ry gg l P-318 was tested' prior to taking P-319 out of service. When stopping P-318.by l

7 89 80 ~

gg l manual trip, an Operator failed to properly reset the trip.

Special training will. l 7 89 80 c l assure all Operators know the proper method of resetting the pump.

l -,'

'T

% POWEA GTHER STATUS dis CVERY OSCOVERY OESCRipTCN

[E l l1 l0 l 0 l l NA l

l NA l

1 7 8 9

10 12 13 44 45 48 SO AYL^ SED n

[2j OFdEASEl AMOUNT OF ACTMTY LOCATCN OF AELEASE NA l

l NA f,

l 7 8 9

10 11 44 45 80,

PERSONNEL EXPOSURES NUMBER TYpf CESCAIATON M l0 l0 l 0 l J l NA l

7 89 11 12 13 80 PERSONNEL INJUAIES NUMBER CESCAW37CN M l0l0l0l l NA l

7 89 11 12 80 OFFSITE CONSEQUENCES gg l Minimal to None l

7 89 80 LOSS CA DAMAGE TO FAC:UTY Tvpf CESCAN37CN

~

@ [Zj l NA l

7 89 10 80 PUBUCITY DE I tocal newsoaoers noti =ted 2/22/77 and 2/24/77 l

7 89 80 AGOITIONAL FACTORS

{ ]89l While neither pu=p was available on safety features, Pump P-318 also has a motor l

i j

80

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drive which Could have been canually actuated had auxiliary feedwater flow been needed g

7 89 R. W. Colombo /F. T. Eisenhuth PHONE;(916) 452-3211 NAM E:--

GPO 881 667 8 0 02 210 $ M

,