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| issue date = 01/05/1999
| issue date = 01/05/1999
| title = LER 98-049-00:on 981020,emergency Boron Injection Flow Path Was Inoperable.Caused by Original Design Deficiency. Engineering Evaluation of Event Is Continuing
| title = LER 98-049-00:on 981020,emergency Boron Injection Flow Path Was Inoperable.Caused by Original Design Deficiency. Engineering Evaluation of Event Is Continuing
| author name = FINISSI M
| author name = Finissi M
| author affiliation = INDIANA MICHIGAN POWER CO.
| author affiliation = INDIANA MICHIGAN POWER CO.
| addressee name =  
| addressee name =  
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=Text=
=Text=
{{#Wiki_filter:NRC Form 366 U.S.NUCLEAR REGULATORY COMMISSION (6-1998)LICENSEE EVENT REPORT (LER)(See reverse for required number of digitslcharacters for each block)APPROVED BY OMB NO.31504104 EXPIRES 06/30/2001 SSTSAATSD IKAIDFN PER RESPONSE TO COALY WIIH Ties MAIKsATORY mORMATION CousCToN RSOUSsn so.o HRS.RTFORTTD LESSONS LEARNED ARe NCORPOMTSD arTO ll%IJCENMNO PROCESS AIS$FED SACK TO PKKJSTRY.F~COMMDITS REOARDNO BURDEN FSTSIATE TO THS PFORMATION AND RECORDS MANACOlENT BRANCH (T4 F$$).U.S.NUCLFAR RECUIATORY COMICSSIOIL WASISNOTON.
{{#Wiki_filter:NRC Form 366           U.S. NUCLEAR REGULATORY COMMISSION                                     APPROVED BY OMB NO. 31504104                   EXPIRES 06/30/2001 (6-1998)                                                                                      SSTSAATSD   IKAIDFN PER RESPONSE TO COALY WIIH Ties MAIKsATORY mORMATION CousCToN RSOUSsn so.o HRS. RTFORTTD LESSONS LEARNED ARe LICENSEE EVENT REPORT (LER)                                                F~
DC 20$$$ooot.AICI TO THE P~REDUCTION PRoJEGT tstsootoo.
NCORPOMTSD arTO ll% IJCENMNO PROCESS AIS$ FED SACK TO PKKJSTRY.
CFFIcs CF MANAOEM0IT AND BUDGET, wASISNOTDIL Dc 20$cs FACIUTY NAME (1)TITLE (e)Cook Nuclear Plant Unit 1 DOCKET NUMBER (2)05000-315 PAGE (2)1 of 1 Interim-Emergency Boron Injection Flow Path Inoperable Due to Original Design Deficiency EVENT DATE (5)MONTH DAY YEAR YEAR LER NUMBER (6)SEQUENTIAL NUMBER REPORT DATE (7)DAY YEAR REVISION NUMBER MONTH Cook Unit 2 N MB 05000-316 NU OTHER FACILITIES INVOLVED (8)10 20 1998 1998 00 01 05 1999 OPERATING MODE (9)50.73(a)(2)(i) 50.73(a)(2)(viii) 20.2201 (b)20.2203(a)(2)(v)
P~
THIS REPORT IS SUBMITTED PURSUANT TO THE REQUIREMENTS OF 10 CFR II: (Check one or more)(11)POWER LEVEL (10)000 20.2203(a)(1) 20.2203(a)(2)(l) 20.2203(a)(2)(II) 20.2203(a)(2)(iii) 20.2203(a)(2)(iv) 20.2203(a)(3)(i) 20.2203(a)(3)(ii) 20.2203(a)(4) 50.36(c)(1) 50.36(c)(2)
COMMDITS REOARDNO BURDEN FSTSIATE TO THS PFORMATION AND RECORDS MANACOlENT BRANCH (T4 F$ $ ). U.S. NUCLFAR RECUIATORY COMICSSIOIL WASISNOTON. DC 20$ $ $ ooot. AICI TO THE               REDUCTION PRoJEGT tstsootoo. CFFIcs CF MANAOEM0IT AND BUDGET, wASISNOTDIL Dc (See reverse for required number of                                    20$ cs digitslcharacters for each block)
UCENSEE CONTACT FOR THIS LER (12)50.73(a)(2)(ii) 50.73(a)(2)(iii) 50.73(a)(2)(iv) 50.73(a)(2)(v) 50.73(a)(2)(vii) 50.73(a)(2)(x) 73.71 OTHER Specify in Abstract below or nNRCFonns66A Mike Finissi, System Engineering Manager TELEPHONE NUMBER (Inc4de Area Code)(616)465-5901, x2830 COMPLETE ONE LINE FOR EACH COIIPONENT FAILURE DESCRIBED IN THIS REPORT (13)CAUSE SYSTEM COMPONENT MANUFACTURER REPORTABLE TO EPIX~, SYSTEM COMPONENT MANUFACTURER REPORTABLE TO EPIX SUPPLEMENTAL REPORT EXPECTED 14 X YES (If Yes, complete EXPECTED SUBMISSION DATE NO EXPECTED SUBMISSION DATE 15)MONTH 02 OAY 19 1999 Abstract (Limit to 1400 spaces, I.e., approximately 15 single-spaced typewritten lines)(16)On October 20 1998, with Units 1 and 2 in Mode 5,'Cold Shutdown, Engineering noted potential problems with emergency boron injection utilizing the Boric Acid Storage Tanks and the Boric Acid Transfer (BAT)Pumps to provide concentrated boric acid to the Reactor Coolant System (RCS)charging pump suction header.Technical Specifications (TS)3.1.2.1 and 3.1.2.2 require boron injection flow paths to the RCS for reactivity control.One potential problem was that, in certain operating conditions, the BAT pumps may not have had adequate net positive suction head (NPSH).The second potential problem involved the possibility of boric acid precipitation degrading an emergency boron injection flow path.There is no evidence that boron injection capability had actually been diminshed at any time.However, since the requisite number of emergency boron injection paths may not have been available in all applicable plant conditions, the emergency boron injection path is conservatively considered to have been inoperable.
FACIUTY NAME (1)                                                                                     DOCKET NUMBER (2)                            PAGE (2)
Therefore, there would have been times when the applicable TS action statements may not have been met.In accordance with 10CFR50.73(a)(2)(i)(B), this condition is being reported as a condition prohibited by the plant's TS.Engineering evaluation of this event is continuing.
Cook Nuclear Plant Unit 1                                               05000-315                                   1 of 1 TITLE (e)
Due to the complex nature of the potential problems and the system interfaces, additional time is being taken to evaluate the identified conditions.
Interim - Emergency Boron Injection Flow Path Inoperable Due to Original Design Deficiency EVENT DATE (5)                     LER NUMBER (6)                       REPORT DATE (7)                       OTHER FACILITIES INVOLVED(8)
Current expectations are to submit an update to this LER by February 19, 1999.'T)90ii20i80 I)8i23i PDR ADOCK 050003is 8 PDR}}
N MB SEQUENTIAL        REVISION                                           Cook Unit 2                           05000-316 MONTH      DAY    YEAR      YEAR          NUMBER          NUMBER        MONTH        DAY      YEAR NU 10       20     1998     1998                             00         01           05       1999 OPERATING                 THIS REPORT IS SUBMITTED PURSUANT TO THE REQUIREMENTS OF 10 CFR II: (Check one or more) (11)
MODE (9)                   20.2201 (b)                          20.2203(a)(2)(v)                         50.73(a)(2)(i)                     50.73(a)(2)(viii)
POWER                       20.2203(a)(1)                       20.2203(a)(3)(i)                         50.73(a)(2)(ii)                     50.73(a)(2)(x)
LEVEL (10)       000                                              20.2203(a)(3)(ii)                         50.73(a)(2)(iii)                   73.71 20.2203(a)(2)(l) 20.2203(a)(2)(II)                   20.2203(a)(4)                             50.73(a)(2)(iv)                     OTHER 20.2203(a)(2)(iii)                   50.36(c)(1)                               50.73(a)(2)(v)
Specify in Abstract below 20.2203(a)(2)(iv)                   50.36(c)(2)                               50.73(a)(2)(vii)               or nNRCFonns66A UCENSEE CONTACT FOR THIS LER (12)
TELEPHONE NUMBER (Inc4de Area Code)
Mike Finissi, System Engineering Manager                                                      (616) 465-5901, x2830 COMPLETE ONE LINE FOR EACH COIIPONENT FAILURE DESCRIBED IN THIS REPORT (13)
REPORTABLE                                                                                        REPORTABLE TO CAUSE     SYSTEM     COMPONENT     MANUFACTURER         TO EPIX                         SYSTEM         COMPONENT           MANUFACTURER                     EPIX
                                                                      ~,
SUPPLEMENTAL REPORT EXPECTED 14                                               EXPECTED                        MONTH            OAY X     YES                                                                                   SUBMISSION                          02              19            1999 (IfYes, complete EXPECTED SUBMISSION DATE                           NO                   DATE 15)
Abstract (Limit to 1400 spaces, I.e., approximately 15 single-spaced typewritten lines) (16)
On October 20 1998, with Units 1 and 2 in Mode 5,'Cold Shutdown, Engineering noted potential problems with emergency boron injection utilizing the Boric Acid Storage Tanks and the Boric Acid Transfer (BAT) Pumps to provide concentrated boric acid to the Reactor Coolant System (RCS) charging pump suction header. Technical Specifications (TS) 3.1.2.1 and 3.1.2.2 require boron injection flow paths to the RCS for reactivity control. One potential problem was that, in certain operating conditions, the BAT pumps may not have had adequate net positive suction head (NPSH). The second potential problem involved the possibility of boric acid precipitation degrading an emergency boron injection flow path.
There is no evidence that boron injection capability had actually been diminshed at any time. However, since the requisite number of emergency boron injection paths may not have been available in all applicable plant conditions, the emergency boron injection path is conservatively considered to have been inoperable. Therefore, there would have been times when the applicable TS action statements may not have been met. In accordance with 10CFR50.73(a)(2)(i)(B), this condition is being reported as a condition prohibited by the plant's TS.
Engineering evaluation of this event is continuing. Due to the complex nature of the potential problems and the system interfaces, additional time is being taken to evaluate the identified conditions. Current expectations are to submit an update to this LER by February 19, 1999.
          'T)90ii20i80 050003is I)8i23i PDR     ADOCK PDR 8}}

Latest revision as of 11:55, 22 October 2019

LER 98-049-00:on 981020,emergency Boron Injection Flow Path Was Inoperable.Caused by Original Design Deficiency. Engineering Evaluation of Event Is Continuing
ML17335A466
Person / Time
Site: Cook American Electric Power icon.png
Issue date: 01/05/1999
From: Finissi M
INDIANA MICHIGAN POWER CO.
To:
Shared Package
ML17335A465 List:
References
LER-98-049, LER-98-49, NUDOCS 9901120180
Download: ML17335A466 (2)
v • d • e


Text

NRC Form 366 U.S. NUCLEAR REGULATORY COMMISSION APPROVED BY OMB NO. 31504104 EXPIRES 06/30/2001 (6-1998) SSTSAATSD IKAIDFN PER RESPONSE TO COALY WIIH Ties MAIKsATORY mORMATION CousCToN RSOUSsn so.o HRS. RTFORTTD LESSONS LEARNED ARe LICENSEE EVENT REPORT (LER) F~

NCORPOMTSD arTO ll% IJCENMNO PROCESS AIS$ FED SACK TO PKKJSTRY.

P~

COMMDITS REOARDNO BURDEN FSTSIATE TO THS PFORMATION AND RECORDS MANACOlENT BRANCH (T4 F$ $ ). U.S. NUCLFAR RECUIATORY COMICSSIOIL WASISNOTON. DC 20$ $ $ ooot. AICI TO THE REDUCTION PRoJEGT tstsootoo. CFFIcs CF MANAOEM0IT AND BUDGET, wASISNOTDIL Dc (See reverse for required number of 20$ cs digitslcharacters for each block)

FACIUTY NAME (1) DOCKET NUMBER (2) PAGE (2)

Cook Nuclear Plant Unit 1 05000-315 1 of 1 TITLE (e)

Interim - Emergency Boron Injection Flow Path Inoperable Due to Original Design Deficiency EVENT DATE (5) LER NUMBER (6) REPORT DATE (7) OTHER FACILITIES INVOLVED(8)

N MB SEQUENTIAL REVISION Cook Unit 2 05000-316 MONTH DAY YEAR YEAR NUMBER NUMBER MONTH DAY YEAR NU 10 20 1998 1998 00 01 05 1999 OPERATING THIS REPORT IS SUBMITTED PURSUANT TO THE REQUIREMENTS OF 10 CFR II: (Check one or more) (11)

MODE (9) 20.2201 (b) 20.2203(a)(2)(v) 50.73(a)(2)(i) 50.73(a)(2)(viii)

POWER 20.2203(a)(1) 20.2203(a)(3)(i) 50.73(a)(2)(ii) 50.73(a)(2)(x)

LEVEL (10) 000 20.2203(a)(3)(ii) 50.73(a)(2)(iii) 73.71 20.2203(a)(2)(l) 20.2203(a)(2)(II) 20.2203(a)(4) 50.73(a)(2)(iv) OTHER 20.2203(a)(2)(iii) 50.36(c)(1) 50.73(a)(2)(v)

Specify in Abstract below 20.2203(a)(2)(iv) 50.36(c)(2) 50.73(a)(2)(vii) or nNRCFonns66A UCENSEE CONTACT FOR THIS LER (12)

TELEPHONE NUMBER (Inc4de Area Code)

Mike Finissi, System Engineering Manager (616) 465-5901, x2830 COMPLETE ONE LINE FOR EACH COIIPONENT FAILURE DESCRIBED IN THIS REPORT (13)

REPORTABLE REPORTABLE TO CAUSE SYSTEM COMPONENT MANUFACTURER TO EPIX SYSTEM COMPONENT MANUFACTURER EPIX

~,

SUPPLEMENTAL REPORT EXPECTED 14 EXPECTED MONTH OAY X YES SUBMISSION 02 19 1999 (IfYes, complete EXPECTED SUBMISSION DATE NO DATE 15)

Abstract (Limit to 1400 spaces, I.e., approximately 15 single-spaced typewritten lines) (16)

On October 20 1998, with Units 1 and 2 in Mode 5,'Cold Shutdown, Engineering noted potential problems with emergency boron injection utilizing the Boric Acid Storage Tanks and the Boric Acid Transfer (BAT) Pumps to provide concentrated boric acid to the Reactor Coolant System (RCS) charging pump suction header. Technical Specifications (TS) 3.1.2.1 and 3.1.2.2 require boron injection flow paths to the RCS for reactivity control. One potential problem was that, in certain operating conditions, the BAT pumps may not have had adequate net positive suction head (NPSH). The second potential problem involved the possibility of boric acid precipitation degrading an emergency boron injection flow path.

There is no evidence that boron injection capability had actually been diminshed at any time. However, since the requisite number of emergency boron injection paths may not have been available in all applicable plant conditions, the emergency boron injection path is conservatively considered to have been inoperable. Therefore, there would have been times when the applicable TS action statements may not have been met. In accordance with 10CFR50.73(a)(2)(i)(B), this condition is being reported as a condition prohibited by the plant's TS.

Engineering evaluation of this event is continuing. Due to the complex nature of the potential problems and the system interfaces, additional time is being taken to evaluate the identified conditions. Current expectations are to submit an update to this LER by February 19, 1999.

'T)90ii20i80 050003is I)8i23i PDR ADOCK PDR 8

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