ML19289D725: Difference between revisions
StriderTol (talk | contribs) (Created page by program invented by StriderTol) |
StriderTol (talk | contribs) (Created page by program invented by StriderTol) |
||
Line 18: | Line 18: | ||
=Text= | =Text= | ||
{{#Wiki_filter:.g . . . | {{#Wiki_filter:.g . . . | ||
C NTHO'. ULOCK: l | C NTHO'. ULOCK: l | ||
* I l l l l l lh 6 | * I l l l l l lh 6 | ||
. (PLEASE PRINT OR TYPE ALL REQUIRED INFORMA1 TON) lTlT]. | . (PLEASE PRINT OR TYPE ALL REQUIRED INFORMA1 TON) lTlT]. | ||
8 9 l l lLLICENSEE lQ lACODE lD l1 l@l 14 0 l 0 l 0 l- l0LICENSE 15 l0- l0 ! - l O! O! O13l@!264 l LICENSE NUVt1ER l'l 1 l 1TYFE l 1JO@! l b 7 CA T t,8 l@ | |||
CON'T | CON'T 2.!_'.]a SC$"C-[lL!@l0I | ||
2.!_'.]a SC$"C-[lL!@l0I | |||
: c. o 5 !O IO 10 | : c. o 5 !O IO 10 | ||
:Cc.u . n; -f m l2 IS ;3 I4 w!@l 0ca IaAre 2 ! O Il [7a 19a @lnI? wc l? !n I7 'lo h 2 | :Cc.u . n; -f m l2 IS ;3 I4 w!@l 0ca IaAre 2 ! O Il [7a 19a @lnI? wc l? !n I7 'lo h 2 | ||
Line 34: | Line 28: | ||
v 2, .g I While performinq surveillance procedure 01S-26. Main Steam L'ne leak Detectinn Tempera t tire, | v 2, .g I While performinq surveillance procedure 01S-26. Main Steam L'ne leak Detectinn Tempera t tire, | ||
~:----l l switches TS 1-261-16A, TS 1-261-18A, and TS 1-261-15c were found to trip _at 210 F l | ~:----l l switches TS 1-261-16A, TS 1-261-18A, and TS 1-261-15c were found to trip _at 210 F l | ||
]l which is in excess of the _< 200 F setpoint as specified in Table 3.2.1 of_the Technical i | ]l which is in excess of the _< 200 F setpoint as specified in Table 3.2.1 of_the Technical i j l Specification. All other main steam line temperature switches were found to trip l m-jm L.._at values within Technical Specification limits. | ||
j l Specification. All other main steam line temperature switches were found to trip l m-jm L.._at values within Technical Specification limits. | |||
. .__ . ~._ . m . j OI _ _ _ | . .__ . ~._ . m . j OI _ _ _ | ||
I af _J | I af _J 3 9 D S m2%t CAUSE CALSE CC 9 va; CC ':E C002 S's !CCC F 5 | ||
CO.VFO? ENT CC C'! SUH.7?? ; m- . | CO.VFO? ENT CC C'! SUH.7?? ; m- . | ||
7 1: | 7 1: | ||
Line 47: | Line 37: | ||
(E QU EN TIA. CCC S P E r;CE ;4E7 RT ? E*/ 'O C N LER EN ENT YE AR REPcRT NO. CCCd TVPE N O. | (E QU EN TIA. CCC S P E r;CE ;4E7 RT ? E*/ 'O C N LER EN ENT YE AR REPcRT NO. CCCd TVPE N O. | ||
O geg.'RO l 719 l l-l l0l0l7 l/l l 01 3l lLl l-! l0l 21 22 23 24 26 27 28 29 30 31 32 ACT ION FUTURE EFFECT SHUTDOWN ATTACHYENT N P R O.4 PRIME COMP. Cc'.tPON EN T TAKEN ACTION CN PLANT METHOO HOURS SUGMITT ED FORMbUB. SUFPLIE R MAN U F ACTU't E R IE l@lZl@ l Zl@ l Z lh l 0 l0 l0 l0 l [y_j@ l Nlh lN lh l F l 0 l 8 l1 Ih 33 34 SS 3G 31 40 48 42 43 44 47 CAUSE DESCRIPTION AND CORRECTIVE ACTIONS lil0 l l The cause of this occurrence was instrument setpoint drift. The t emne ra t u re switches I li li l l 16A, 18A, and 15C were re calibrated to trip at setpoints of 180 0F. 1800F. and 1810r I m ;j j respectively. l i a i ! | O geg.'RO l 719 l l-l l0l0l7 l/l l 01 3l lLl l-! l0l 21 22 23 24 26 27 28 29 30 31 32 ACT ION FUTURE EFFECT SHUTDOWN ATTACHYENT N P R O.4 PRIME COMP. Cc'.tPON EN T TAKEN ACTION CN PLANT METHOO HOURS SUGMITT ED FORMbUB. SUFPLIE R MAN U F ACTU't E R IE l@lZl@ l Zl@ l Z lh l 0 l0 l0 l0 l [y_j@ l Nlh lN lh l F l 0 l 8 l1 Ih 33 34 SS 3G 31 40 48 42 43 44 47 CAUSE DESCRIPTION AND CORRECTIVE ACTIONS lil0 l l The cause of this occurrence was instrument setpoint drift. The t emne ra t u re switches I li li l l 16A, 18A, and 15C were re calibrated to trip at setpoints of 180 0F. 1800F. and 1810r I m ;j j respectively. l i a i ! | ||
i 4 I I 3 8 9 83 F ACILITY METHOD OF STATUS % POWER OTHER STATUS DISCOVERY OISCOVERY DESCntPTION bi 5 l_H_jh l 0 l 0 l 0 lhl NA l b h! Surveillance Testinn l A 8 9 10 12 13 44 45 46 80 ACTIVITY CONTENT RELEASED OF RELEASE AMOUNT OF ACTIVITY LOCATION OF RELEASE li a Lz_1 @ l10Z l @ l13 NA I NA I | |||
i 4 I I 3 8 9 83 F ACILITY METHOD OF STATUS % POWER OTHER STATUS DISCOVERY OISCOVERY DESCntPTION bi 5 l_H_jh l 0 l 0 l 0 lhl NA l b h! Surveillance Testinn l A 8 9 10 12 13 44 45 46 80 ACTIVITY CONTENT | |||
& B 9 44 45 60 PERSONNEL EXPOSURES NUMBER TYPE DESCRl* TION p 7 l 0 l 0 l0 l@l Z l@l NA l 7 8 9 11 12 13 EO PERSONN E L INJURIES NUYB E R DESCRIPTION hi , | & B 9 44 45 60 PERSONNEL EXPOSURES NUMBER TYPE DESCRl* TION p 7 l 0 l 0 l0 l@l Z l@l NA l 7 8 9 11 12 13 EO PERSONN E L INJURIES NUYB E R DESCRIPTION hi , | ||
l 0 l 0 l0 lg NA ' l 7 8 9 11 12 60 LOSS OF OR DAU AGE TO FACILITY T PE DESCRIPIlON h iol l l@l NA I | l 0 l 0 l0 lg NA ' l 7 8 9 11 12 60 LOSS OF OR DAU AGE TO FACILITY T PE DESCRIPIlON h iol l l@l NA I | ||
L 6 9 to 63 DE TCRIPTION lllllll1l3IIl%I | L 6 9 to 63 DE TCRIPTION lllllll1l3IIl%I ISSUE , , | ||
;2101 LN,,, hl NA l i a o io ce so Sc ; | ;2101 LN,,, hl NA l i a o io ce so Sc ; | ||
Dave Hannum 309654-2241, ext. 252 NAME OF PREPARER PHONE: { | Dave Hannum 309654-2241, ext. 252 NAME OF PREPARER PHONE: { | ||
~ | ~ | ||
: l. LER NUMBER: LER/R0 79-07/03L-0 | : l. LER NUMBER: LER/R0 79-07/03L-0 | ||
: 11. LICENSEE NAME: Commonwealth Edison Company Quad-Cities Nuclear Power Station Ill. FACILITY NAME: Unit One IV. DOCKET NUMBER: 050-254 V. EVENT DESCRIPTION: | : 11. LICENSEE NAME: Commonwealth Edison Company Quad-Cities Nuclear Power Station Ill. FACILITY NAME: Unit One IV. DOCKET NUMBER: 050-254 V. EVENT DESCRIPTION: |
Latest revision as of 16:49, 1 February 2020
ML19289D725 | |
Person / Time | |
---|---|
Site: | Quad Cities |
Issue date: | 02/20/1979 |
From: | Hannum D COMMONWEALTH EDISON CO. |
To: | NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION III) |
Shared Package | |
ML19289D720 | List: |
References | |
LER-79-007-03L, LER-79-7-3L, NUDOCS 7903140286 | |
Download: ML19289D725 (2) | |
Text
.g . . .
C NTHO'. ULOCK: l
- I l l l l l lh 6
. (PLEASE PRINT OR TYPE ALL REQUIRED INFORMA1 TON) lTlT].
8 9 l l lLLICENSEE lQ lACODE lD l1 l@l 14 0 l 0 l 0 l- l0LICENSE 15 l0- l0 ! - l O! O! O13l@!264 l LICENSE NUVt1ER l'l 1 l 1TYFE l 1JO@! l b 7 CA T t,8 l@
CON'T 2.!_'.]a SC$"C-[lL!@l0I
- c. o 5 !O IO 10
- Cc.u . n; -f m l2 IS ;3 I4 w!@l 0ca IaAre 2 ! O Il [7a 19a @lnI? wc l? !n I7 'lo h 2
E '27 C E CCT "! C ' , . J ^ O~ A BL E CCf. EC -E':2.E5 (' ..
v 2, .g I While performinq surveillance procedure 01S-26. Main Steam L'ne leak Detectinn Tempera t tire,
~:----l l switches TS 1-261-16A, TS 1-261-18A, and TS 1-261-15c were found to trip _at 210 F l
]l which is in excess of the _< 200 F setpoint as specified in Table 3.2.1 of_the Technical i j l Specification. All other main steam line temperature switches were found to trip l m-jm L.._at values within Technical Specification limits.
. .__ . ~._ . m . j OI _ _ _
I af _J 3 9 D S m2%t CAUSE CALSE CC 9 va; CC ':E C002 S's !CCC F 5
CO.VFO? ENT CC C'! SUH.7?? ; m- .
7 1:
4 9 Il i Blh lE !h I E!h ll LO 18 12 13
'N IS 'T IR D Ih 13 a S'h .a Z__, [
(E QU EN TIA. CCC S P E r;CE ;4E7 RT ? E*/ 'O C N LER EN ENT YE AR REPcRT NO. CCCd TVPE N O.
O geg.'RO l 719 l l-l l0l0l7 l/l l 01 3l lLl l-! l0l 21 22 23 24 26 27 28 29 30 31 32 ACT ION FUTURE EFFECT SHUTDOWN ATTACHYENT N P R O.4 PRIME COMP. Cc'.tPON EN T TAKEN ACTION CN PLANT METHOO HOURS SUGMITT ED FORMbUB. SUFPLIE R MAN U F ACTU't E R IE l@lZl@ l Zl@ l Z lh l 0 l0 l0 l0 l [y_j@ l Nlh lN lh l F l 0 l 8 l1 Ih 33 34 SS 3G 31 40 48 42 43 44 47 CAUSE DESCRIPTION AND CORRECTIVE ACTIONS lil0 l l The cause of this occurrence was instrument setpoint drift. The t emne ra t u re switches I li li l l 16A, 18A, and 15C were re calibrated to trip at setpoints of 180 0F. 1800F. and 1810r I m ;j j respectively. l i a i !
i 4 I I 3 8 9 83 F ACILITY METHOD OF STATUS % POWER OTHER STATUS DISCOVERY OISCOVERY DESCntPTION bi 5 l_H_jh l 0 l 0 l 0 lhl NA l b h! Surveillance Testinn l A 8 9 10 12 13 44 45 46 80 ACTIVITY CONTENT RELEASED OF RELEASE AMOUNT OF ACTIVITY LOCATION OF RELEASE li a Lz_1 @ l10Z l @ l13 NA I NA I
& B 9 44 45 60 PERSONNEL EXPOSURES NUMBER TYPE DESCRl* TION p 7 l 0 l 0 l0 l@l Z l@l NA l 7 8 9 11 12 13 EO PERSONN E L INJURIES NUYB E R DESCRIPTION hi ,
l 0 l 0 l0 lg NA ' l 7 8 9 11 12 60 LOSS OF OR DAU AGE TO FACILITY T PE DESCRIPIlON h iol l l@l NA I
L 6 9 to 63 DE TCRIPTION lllllll1l3IIl%I ISSUE , ,
- 2101 LN,,, hl NA l i a o io ce so Sc ;
Dave Hannum 309654-2241, ext. 252 NAME OF PREPARER PHONE: {
~
- l. LER NUMBER: LER/R0 79-07/03L-0
- 11. LICENSEE NAME: Commonwealth Edison Company Quad-Cities Nuclear Power Station Ill. FACILITY NAME: Unit One IV. DOCKET NUMBER: 050-254 V. EVENT DESCRIPTION:
On February 1, 1979, with Unit One in the REFUEL mode, routine surveillance QlS-26 was performed on the main steam line high temperature switches. During the surveillance TS 1-261-16A, TS 1261-18A and TS 1-261-15C were found to trip in excess of <~~
200 F setpoint as specified in Table 3 2.1 of the Technical Specification. All other switches were found to trip within limits.
VI. PROBABLE CONSEQUENCES OF THE OCCURRENCE:
The purpose of these temperature switches is ao initiate a closure of the main steam isolation valves, steam drain valves, and primary sample valves in the event of a Group I isolation condition. Due to the fail safe logic of any one out of the four temperature switches de-energizing the primary relay in the logic circuit, a Group i isolation would have occurred at or below the 200 F setpoint as specified in Table 3.2.1. of the Technical Specifications.
Vll. CAUSE:
Instrument drift caused the setpoints to exceed the Technical Specification limitation.
Vill. CORRECTIVE ACTION:
The switches were recalibrated and tested satisfactorily. The "as found" and "recalibrated" setpoints are as follows:
EQUIPMENT PIECE NUMBER AS FOUND (OF) RECALIBRATED ( F)
TS 1-261-16A 210 180 TS 1-261-18A 210 180 TS 1-261-15C 210 181