ML19341A008

LER 80-075/03L-0:on 801215-31,plant Operated W/Total Primary Coolant Oxidants Greater than 10 Ppm & Average Core Outlet Temp Greater than 1200 F on Seven Occasions.Caused by High Moisture in Helium Storage Tanks.Tanks Purged

ML19341A008
Person / Time
Site:	Fort Saint Vrain
Issue date:	01/14/1981
From:	Gahm J PUBLIC SERVICE CO. OF COLORADO
To:	NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION IV)
Shared Package
ML19341A006	List: ML19341A005 ML19341A008
References
LER-80-075-03L, LER-80-75-3L, NUDOCS 8101210410
Download: ML19341A008 (1)

Text

G( U. S. NUCLEAR REzULATORY COMMISSl!N NRC FORM 384

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LICENSEE EVENT REPORT CONTROL BLOCK: l i

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(PLEASE PRINT OR TYPE ALL REQUIRED INFORMATION) io I i 8I 9! c I 01 7

F l S l V l 141l@l LICENSEE CODE 15 0 l O'l -l U LICENSEi 0 ' "lM 0*"9ER l 0 l - l 0 l 0 25l@[4_l 26 1LACENSE l 1 l 2TtPE l l 040l@l67 CAT 54 l@

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REPORT OATE $Q 7 5 60 61 OOCKET NLYSEq EVENT OESCRIPTION AND PRC8ABLE CONSEQUENCES h l o 12 l l During the period from December 15 to December 31, 1980. the olant was ooerated with I io !3l l total primary coolant oxidants (the sum of carbon monoxide, carbon dioxide, and water)!

l o ! a l I greater than 10 ppm and the average core outlet temperature greater than 1200*F on I l o i s I 1 seven separate occasions. These events constitute operation in a degraded mode of l i o ,e 1 l LCO 4.2.10 and are reportable per Fort St. Vrain Technical Specification AC 7.5.2(b)21 l C l 7 l l No ef f ect on public health or saf ety. Related reports are 77-36, 78-12, 73-18, 78-37,1 1oia11 78-39, 79-01, 79-02, 79-24, 79-30, 79-/45, 79-53, 30-11, 80-19, 80-22, 80-25, 80-36, l 7 sa O W , and,,gr,p o d c,u,, c,u,, c c y,. v,tv, CODE COCE SLBCOCE COv8CN ENT COCE SLSCODE SUSCOCi 10191 7 s I ci sl@ l xl@ l zl@ Iz !z Iz iz Iz Iz l@ Iz l@ l zi@

9 to 11 12 13 18 19 20

_ SEcuENTIAL OCCURAENCE RE*CRT REVIS'CN LES 90 EN ENT YEAR REPCRT No. CCCE vPE NO.

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J 34 26 26 3 e. 40 42 43 44 47 CAUSE CESCRIPTION AND CCRRECTIVE ACTIONS @

l i l c i l The primary coolant oxidants exoerienced during this period is being attributed to l li ii ; ; high moisture in the helium storage tanks. These tanks are being purged and refilled 1

, , , , , l to prevent introduction of moisture into the primary coolants. l l i 6 31 l I l i i 41 I I 7 a s so SA 4 PCWER OTMER STATUS 3tS Q RY DISCOVERY DESCRIPT1CN I1 l 51 d@ l 0 l 6 l 5 l@l N/A l lAl@l Operator Observation l ACTIVITY CC TENT REtEASE AvouNTor ACTiviry @l N/A l LoCATICN CF RELEASE @

l i i s8 9l U @o en REttASELz_J@ l N/A 7 10 11 44 4S SJ l

PERSCNNEL EXPCSURES NuweER TYPE CESCRIPTICN

• Ii I 7 I l 01 of 01@lZ l@l N/A l

' ' ' ,ER$ ANNE'Lbu'lES

S NeveER mESCRi,TiCN@ l li j a l l 0l Ql 0l@l N/A J l_ l 7 8 9 11 12 30 LCSS CP CR DAMAGE To FACILITY Q TYPE CESCRIPTIoN v

11191 1 zi@l.13 N/A l 7 8 9 60 l iSSyE DE CRIPTION e l I 21 o f l Nf@l N/A I l11!IIIi!IIIli l 1 0Ql,O,,,,,,,,p p g (myw,g l ,,,,, V J 55 % s *{

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