05000250/LER-1978-003-01, /01T-0:on 780324,util Notified by NSSS Vendor That Logic Inconsistency Identified in NRC Approved 10CFR50.46 App K,Eccs Evaluation Model.Cause Not Stated.Review Underway

/01T-0:on 780324,util Notified by NSSS Vendor That Logic Inconsistency Identified in NRC Approved 10CFR50.46 App K,Eccs Evaluation Model.Cause Not Stated.Review Underway

ML17340B148
Person / Time
Site:	Turkey Point
Issue date:	04/07/1978
From:	Klein W FLORIDA POWER & LIGHT CO.
To:	FLORIDA POWER & LIGHT CO.
Shared Package
ML17340B144	List: 05000250/LER-1978-002, Forwards LER 78-002/01T-0 05000250/LER-1978-002-01, /01T-0:on 780324,util Notified by NSSS Vendor That Logic Inconsistency Identified in NRC Approved 10CFR50.46 App K,Eccs Evaluation Model.Cause Not Stated.Review Underway 05000250/LER-1978-003, Forwards LER 78-003/01T-0 05000250/LER-1978-003-01, /01T-0:on 780324,util Notified by NSSS Vendor That Logic Inconsistency Identified in NRC Approved 10CFR50.46 App K,Eccs Evaluation Model.Cause Not Stated.Review Underway 05000250/LER-1979-003-01, /01T-0:on 791101,NSSS Vendor Identified & Corrected Input Error in Two LOCA Analyses.Caused by Use of Incorrect Method.Procedures Revised ML17340B143
References
LER-78-003-01T, LER-78-3-1T, NUDOCS 8105050075
Download: ML17340B148 (1)

LER-1978-003, /01T-0:on 780324,util Notified by NSSS Vendor That Logic Inconsistency Identified in NRC Approved 10CFR50.46 App K,Eccs Evaluation Model.Cause Not Stated.Review Underway

Event date:
Report date:
2501978003R01 - NRC Website

text

~

~ i, SSSSACI7&SASte

'bsSRC FOAM 368 (7 773 LICE!%SEE EVENT RCPORT U. S. VUCLSAA ASCULPATQRY CQhtMISSIQN 1

CQN'T

~OI I

3 0

I I

I I

<QI tPLSASS PAINT QA TYPS ALLRSQUIASO INFQRhlATIQNI (I

10~1 O

s5 8

LICZ ISZ YPS 20 31 C*1 !a

.Qz Q.

2 LICZNSZS CCQS LICSN58 IIV:188A

,";":..": ma

' "'O~O~!'

O 30 CQCX ST NUhi88A 33 33 VPNT 0418 IC I)

WZPQATQAsa

!0 EVSIV QSSCAIPTIQN ANQ PAQSABLS C

.ISFQUSNCSS QIO FPL was notified b the NSSS vendor that a logic inconsistency had been

~03 identified in the NRC a roved 10 CFR 50.46 die K, FCCS evaluation

~o n 'n could result in an ad'ust-

~05 ment to allowable hot channel factors.

This matter is under review by the NSSS vendor and NRC Licensing.

~0 30 SYSTcta CAUSZ CAUSS CQhIP.

YALvc CQQS CQQS SUSCCQ8 CCNPONSIIT CQ08 Sl'SCQQS SUSCQQS

~09 1~0 LJO Lac~S LBS L'JS 1

8 10 Il

~

• I2 12 l3 l9 0

ScCUZi'ITIAL QCCUAAZNCS ASPQAT AcVISIQN LSAIAO 3VSNTYSAA AcPQAT NQ.

CQQS TYP'5 PI0.

Qii ssssss

~78

~

" ~00 3

~m

~01

~T 2l 22 22 Ic 28 21 IS 29 20

!I ACTICII PUTUAS

- PPZCT SNUTQCYIN Al,ACNMSIIT 4PAQM PA!148 COMP, CCUPCIIZNT TAIt*N ACTION 04 PLAhNT

!JSTNQQ HQUAS Q22 SUAIMITTSQ PQAhl )US, SUPPLISA APANUPACTLilcst LLSLcS L 'S LUS~

LAO MS L'JS ~S

~5 28 31 41 CAUSc; QSSCAIPTIQN *NQCQRASC'I'IVS ACTIQiVS +27 0

Ongoing review of tM ECCS evaluation model revealed a logic inconsistency

',zirconium water reaction from the fuel rods.

Appropriate adjustments to the mcdel are being studied.

Corrective action will be implemented based on the results of the review by the NRC, the NSSS vendor, and FPL.

2 9

8 AC Il.'ITY ST*AUS N STHQQ QP 4 PQwzR 0 ~ NZR STATUS ~

QISCQVSAY QISI'Qv RY QzscAIPTIQN +22

~DQCI Notification from NSSS s

E Qs

~110IOQs N/h 1

8 10 '2

'4 ACTIVITY CON TcNT'ft ZASZQ QP ASLZASS AAIQUNTQsc ACTIVITYQSS

~z Q22

~z(QS.

N/A 1

3 9

'0 44 PSA$QNNzl, ZPIPCSUAPS

~ii ~OO 0 1Q7 ~ZTQA 3

3 1 l

!2 t2 PSRSQNNZL IN!l.'AISS

~o""'o'" o Q'"'"""'"

LQC*T!QNQF ASLZA58 Q28 N/A N/A N/A

.'in the calculational method used in transferring the heat generated by the ao 50 g

9 ll l2 LCSS QP CA QAMACZ TO PACtLITY Q42 08$ CAIPTICN

~zQ2 I0 N/A 20 8X9605 0 ~><

8 QF PRFPARF R

+

~

ein PUELICI,Y

SSU20 08$ CRIPT:CN QAS

~Y'Q~

NRC Press release issued on 4/5/78.

1 3

1 70 VAC USc CNLY aa 30 PQNa (305}

552 3802