ML19350A359: Difference between revisions
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LICENSEE EVENT REPORT | LICENSEE EVENT REPORT cmeTRot.stOct: I I I l 1 l@ (PLEAsE PalNT OR TYPE ALL REQUlEED INFORMATIONI 1, | ||
i o i 4 9 lP l A l 3 lV l S l 1 l@l 0 l0 l- l uCEnSE LICEreSEE CCOE 14 ts 0 l0 NuwsER l0 l0 l0 l- l0 l0JSl@l4 26 l1uckhsE l1 l1 TvPEl140l@l67 CAl T Sdlg COwr o 8 Uc,* Ql 0 l 510 l 0 l0 l 3 l 3 ?Qled 01210 69 l 818 l 1 @l 013 REPORT Ew E'er DATE J4 FS l Ol 061 ATE al 1l@ | i o i 4 9 lP l A l 3 lV l S l 1 l@l 0 l0 l- l uCEnSE LICEreSEE CCOE 14 ts 0 l0 NuwsER l0 l0 l0 l- l0 l0JSl@l4 26 l1uckhsE l1 l1 TvPEl140l@l67 CAl T Sdlg COwr o 8 Uc,* Ql 0 l 510 l 0 l0 l 3 l 3 ?Qled 01210 69 l 818 l 1 @l 013 REPORT Ew E'er DATE J4 FS l Ol 061 ATE al 1l@ | ||
80 7 e e0 48 OoCKET waseeR EVENT DESCRIPTION AND PR0 saute CONSEQUENCES h . | 80 7 e e0 48 OoCKET waseeR EVENT DESCRIPTION AND PR0 saute CONSEQUENCES h . | ||
Q l At 081$ hours following a Bank D insertion to 190 steps due to a positive delta l o , I flux, analog rod position l'ndicator (ARPI) channels !!2, P8, F10 and al0 indicated l g l greater than 12 steps from demand. They and the associated Bank D rods were l o s I dec'lared inoperable as per Technical Specifications 3.1.3.1 and 3.1.3.2. Power l g l op.= ration continued when the four ARPIs re-entered their operating band withi'n the l o , l allowed 1-hour stabilization period of Technical Specification 3.1.3.2. This was l g I achieved by partially borating the bank back out of the core. l 80 1 8 9 SYSTEM CAUSE CAllSE COMP. yALvt CODE CODE Suer O')E COMPCNENT CODE SueCoot SueCoo4 | Q l At 081$ hours following a Bank D insertion to 190 steps due to a positive delta l o , I flux, analog rod position l'ndicator (ARPI) channels !!2, P8, F10 and al0 indicated l g l greater than 12 steps from demand. They and the associated Bank D rods were l o s I dec'lared inoperable as per Technical Specifications 3.1.3.1 and 3.1.3.2. Power l g l op.= ration continued when the four ARPIs re-entered their operating band withi'n the l o , l allowed 1-hour stabilization period of Technical Specification 3.1.3.2. This was l g I achieved by partially borating the bank back out of the core. l 80 1 8 9 SYSTEM CAUSE CAllSE COMP. yALvt CODE CODE Suer O')E COMPCNENT CODE SueCoot SueCoo4 | ||
.8, . | .8, . | ||
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_ SECUENTIAL OCCURRENCE mEPORT REVISION L RO GVENTVEAR REPORT No. CODE TYPE N O. | _ SECUENTIAL OCCURRENCE mEPORT REVISION L RO GVENTVEAR REPORT No. CODE TYPE N O. | ||
@ ,a=E R : [a11l l-l l of 11 81 i,d 10 13 i L'_J I-I 101 | @ ,a=E R : [a11l l-l l of 11 81 i,d 10 13 i L'_J I-I 101 | ||
_n n n u :. u n u v 22 T E C O CNP T TM HCURS SS i FOR S. SUPruE M ANUF AC RER | _n n n u :. u n u v 22 T E C O CNP T TM HCURS SS i FOR S. SUPruE M ANUF AC RER lxj@lxl@ I45 Z i@ | ||
lxj@lxl@ I45 Z i@ | |||
l38Zi@ l 01 0l 0 37 I IJ_j@ | l38Zi@ l 01 0l 0 37 I IJ_j@ | ||
44 l N [g l Z lg l Z l 9 l 9 l sy9lg | 44 l N [g l Z lg l Z l 9 l 9 l sy9lg 34 44 40 42 43 44 i CAUSE oESCRIPTION AND CORRECTIVE ACTICNS h A l This incident is attributed to the loss of ARPI accuracy in the region of their ; | ||
to actual g l calibration curves corresponding to a rod position of 190 steps and not i my { rod misalictunent. A proposed Technical Specification change would increase the i g l allowed operating band of the ARPIs while still tnaintaining peaking f *ctors within l i 4 l those assumed in the safety analysis. I 7 4 g 30 5 % POWER OTHEe STAT'.it v RY DISCOVERY CESCPfpT'ON lt i a* l W@ l 0# l 5 l 0l@l N/A l l''B l@l''RPI surveillance check l alviviTv CC'NTEST untA!E AMOUNT CF ACTIvtTY LCCATICN CF RELEASE N/A N/A l R Wa e@D C8 RELEASEl@l 7 | |||
34 44 40 42 43 44 i CAUSE oESCRIPTION AND CORRECTIVE ACTICNS h A l This incident is attributed to the loss of ARPI accuracy in the region of their ; | |||
to actual | |||
g l calibration curves corresponding to a rod position of 190 steps and not i | |||
my { rod misalictunent. A proposed Technical Specification change would increase the i g l allowed operating band of the ARPIs while still tnaintaining peaking f *ctors within l i 4 l those assumed in the safety analysis. I 7 4 g 30 5 % POWER OTHEe STAT'.it v RY DISCOVERY CESCPfpT'ON lt i a* l W@ l 0# l 5 l 0l@l N/A l l''B l@l''RPI surveillance check l | |||
l iJ l | l iJ l | ||
ii 44 l l 45 60 | ii 44 l l 45 60 | ||
Line 56: | Line 43: | ||
!I!'l I N/A ^ | !I!'l I N/A ^ | ||
s 3 J ) *: JJ | s 3 J ) *: JJ | ||
'' is t %t *v | '' is t %t *v N AC USE ONLY e '.*o E 9 t d I " 'b''!!CP'PTIC4 t CA I I!!!l!!!I!!Iil 2 'a .a ., M s-w v . Eunt, W. s. r.acey ,,,,,, :1:_w-u:5 sunu 9 | ||
N AC USE ONLY e '.*o E 9 t d I " 'b''!!CP'PTIC4 t CA I I!!!l!!!I!!Iil | |||
2 'a .a ., M s-w v . Eunt, W. s. r.acey ,,,,,, :1:_w-u:5 sunu 9 | |||
_ . . .__.- _._ _ _ _ _ _ _ . _ _ _ - . . . _ . . _ . . _ _ =._ .. __ - _ . - - . _ _ _ . . _ _ _ _ . _ _ __ _. | _ . . .__.- _._ _ _ _ _ _ _ . _ _ _ - . . . _ . . _ . . _ _ =._ .. __ - _ . - - . _ _ _ . . _ _ _ _ . _ _ __ _. | ||
q , , | q , , | ||
: Attachment To LER 81-1P,/03L l Beaver Valley Powar Station i I, - - Duquesne Light Company i | : Attachment To LER 81-1P,/03L l Beaver Valley Powar Station i I, - - Duquesne Light Company i | ||
Docket No. 50-334 ! | Docket No. 50-334 ! | ||
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f No further information is available or needed to satisfy the reporting . | |||
l requirement. , | l requirement. , | ||
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Revision as of 01:27, 31 January 2020
ML19350A359 | |
Person / Time | |
---|---|
Site: | Beaver Valley |
Issue date: | 03/06/1981 |
From: | Lacey W DUQUESNE LIGHT CO. |
To: | NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION I) |
Shared Package | |
ML19350A356 | List: |
References | |
LER-81-018-03L, LER-81-18-3L, NUDOCS 8103130611 | |
Download: ML19350A359 (2) | |
Text
W 78 '
LICENSEE EVENT REPORT cmeTRot.stOct: I I I l 1 l@ (PLEAsE PalNT OR TYPE ALL REQUlEED INFORMATIONI 1,
i o i 4 9 lP l A l 3 lV l S l 1 l@l 0 l0 l- l uCEnSE LICEreSEE CCOE 14 ts 0 l0 NuwsER l0 l0 l0 l- l0 l0JSl@l4 26 l1uckhsE l1 l1 TvPEl140l@l67 CAl T Sdlg COwr o 8 Uc,* Ql 0 l 510 l 0 l0 l 3 l 3 ?Qled 01210 69 l 818 l 1 @l 013 REPORT Ew E'er DATE J4 FS l Ol 061 ATE al 1l@
80 7 e e0 48 OoCKET waseeR EVENT DESCRIPTION AND PR0 saute CONSEQUENCES h .
Q l At 081$ hours following a Bank D insertion to 190 steps due to a positive delta l o , I flux, analog rod position l'ndicator (ARPI) channels !!2, P8, F10 and al0 indicated l g l greater than 12 steps from demand. They and the associated Bank D rods were l o s I dec'lared inoperable as per Technical Specifications 3.1.3.1 and 3.1.3.2. Power l g l op.= ration continued when the four ARPIs re-entered their operating band withi'n the l o , l allowed 1-hour stabilization period of Technical Specification 3.1.3.2. This was l g I achieved by partially borating the bank back out of the core. l 80 1 8 9 SYSTEM CAUSE CAllSE COMP. yALvt CODE CODE Suer O')E COMPCNENT CODE SueCoot SueCoo4
.8, .
IR lB l@ dh Jh l Zl o7,l Zl Zl Zl Zlh
. io ii i2 s.
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_ SECUENTIAL OCCURRENCE mEPORT REVISION L RO GVENTVEAR REPORT No. CODE TYPE N O.
@ ,a=E R : [a11l l-l l of 11 81 i,d 10 13 i L'_J I-I 101
_n n n u :. u n u v 22 T E C O CNP T TM HCURS SS i FOR S. SUPruE M ANUF AC RER lxj@lxl@ I45 Z i@
l38Zi@ l 01 0l 0 37 I IJ_j@
44 l N [g l Z lg l Z l 9 l 9 l sy9lg 34 44 40 42 43 44 i CAUSE oESCRIPTION AND CORRECTIVE ACTICNS h A l This incident is attributed to the loss of ARPI accuracy in the region of their ;
to actual g l calibration curves corresponding to a rod position of 190 steps and not i my { rod misalictunent. A proposed Technical Specification change would increase the i g l allowed operating band of the ARPIs while still tnaintaining peaking f *ctors within l i 4 l those assumed in the safety analysis. I 7 4 g 30 5 % POWER OTHEe STAT'.it v RY DISCOVERY CESCPfpT'ON lt i a* l W@ l 0# l 5 l 0l@l N/A l lB l@lRPI surveillance check l alviviTv CC'NTEST untA!E AMOUNT CF ACTIvtTY LCCATICN CF RELEASE N/A N/A l R Wa e@D C8 RELEASEl@l 7
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_ . . .__.- _._ _ _ _ _ _ _ . _ _ _ - . . . _ . . _ . . _ _ =._ .. __ - _ . - - . _ _ _ . . _ _ _ _ . _ _ __ _.
q , ,
- Attachment To LER 81-1P,/03L l Beaver Valley Powar Station i I, - - Duquesne Light Company i
Docket No. 50-334 !
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f No further information is available or needed to satisfy the reporting .
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