05000267/LER-1976-024, Update 1 to LER 76-024:on 760726,circulator 1C Tripped on Buffer Upset Following Discharge Valve Opening During Helium Recirculator Return to Svc.Caused by Buffer Differential Pressure Exceeding Trip Point

Update 1 to LER 76-024:on 760726,circulator 1C Tripped on Buffer Upset Following Discharge Valve Opening During Helium Recirculator Return to Svc.Caused by Buffer Differential Pressure Exceeding Trip Point

ML20088A996
Person / Time
Site:	Fort Saint Vrain
Issue date:	07/13/1977
From:	Hillyard H PUBLIC SERVICE CO. OF COLORADO
To:	NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION IV)
Shared Package
ML20085N523	List: 05000267/LER-1976-024, Update 1 to LER 76-024:on 760726,circulator 1C Tripped on Buffer Upset Following Discharge Valve Opening During Helium Recirculator Return to Svc.Caused by Buffer Differential Pressure Exceeding Trip Point
References
LER-76-024, LER-76-24, NUDOCS 8311110083
Download: ML20088A996 (1)

LER-2076-024, Update 1 to LER 76-024:on 760726,circulator 1C Tripped on Buffer Upset Following Discharge Valve Opening During Helium Recirculator Return to Svc.Caused by Buffer Differential Pressure Exceeding Trip Point

Event date:
Report date:
2672076024R00 - NRC Website

text

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7 89 h.irnedtoservice. 80 BE I l 7 89 80

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cEE cN ccMooNENT cooE vetAfeN SE lC lB l W 7 89 10 11 l Xl Xl Xl Xl X l X l 12 17 W 43 44 l Zl 9l 9l 9l 47 d48 CAUSE DESCRIPTION -

8 l Opening recirculator discharg'e valve caused buffer dif ferential pressure to exceed trio I 7 89 80

! Point. CauRe installed on recirculator tank and small canacity orpeenrivine vn1ve  !

7 89 80 UE ladded. l

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RELEA O O ASE AMOUNT OF ACTMTV LOcATON OF RELEASE

@6 W j l N/A l l N/A I l 7 8 9 10 11 44 45 80 3 PERSONNEL EXPOSURES NUMBER TYPE DESCwfCN DE lo 1010 l (z_] l N/A l 7 89 11 12 13 80 PERSONNEL INJURfES NUMBER DESCaipicM 30 l0 l0 l 0 l l N/A I 7 89 11 12 80 OFFSITE CONSEC'JENCES

_ @ [N / A l 7 89 80 LDSS OR OAMAGE TO FACIUTY TYPE DESCRIPTON Q3 d 7 89 l N/A 10 8311110083 770713 80 l

PU8UCITY PDR ADOCK 05000267 S PDR DG lN/A l 7 89 80 ADDITIONAL FACTORS D@ lThis updates event no. 1 of this report. l .

7 89 80 81 _ l NAME- - m (303) 785-2253 H. W. Hillvark Jr. __ '___ _ _ , _ , _ __ _

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