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| | issue date = 04/22/1993 | | | issue date = 04/22/1993 |
| | title = LER 92-015-01:on 920831,2A Control Air Header Inlet Air Operated Globe Valve Failed Closed,During Normal Power Operation.Caused by Design,Mfg,Const/Installation of Ssps Circuit.Design Change implemented.W/930422 Ltr | | | title = LER 92-015-01:on 920831,2A Control Air Header Inlet Air Operated Globe Valve Failed Closed,During Normal Power Operation.Caused by Design,Mfg,Const/Installation of Ssps Circuit.Design Change implemented.W/930422 Ltr |
| | author name = POLLACK M J, VONDRA C A | | | author name = Pollack M, Vondra C |
| | author affiliation = PUBLIC SERVICE ELECTRIC & GAS CO. OF NEW JERSEY | | | author affiliation = PUBLIC SERVICE ELECTRIC & GAS CO. OF NEW JERSEY |
| | addressee name = | | | addressee name = |
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| {{#Wiki_filter:Public Service Electric and Gas Company P.O. Box 236 Hancocks Bridge, New Jersey 08038 Salem Generating Station U. s. Nuclear Regulatory Commission . Document control Desk Washington, DC 20555 * | | {{#Wiki_filter:Public Service Electric and Gas Company P.O. Box 236 Hancocks Bridge, New Jersey 08038 Salem Generating Station April 22, 1993 U. s. Nuclear Regulatory Commission . |
| | Document control Desk Washington, DC 20555 |
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| ==Dear sir:== | | ==Dear sir:== |
| SALEM GENERATING STATION LICENSE NO. DPR-75 DOCKET NO. 50-311 UNIT NO. 2 April 22, 1993 SUPPLEMENTAL LICENSEE EVENT REPORT 92-015-01 This supplemental Licensee Event Report is being submitted pursuant to Code of Federal Regulations 10CFR50.73. | | |
| The Apparent Cause of Occurrence and Action sections have been modified based upon completed investigations. | | SALEM GENERATING STATION LICENSE NO. DPR-75 DOCKET NO. 50-311 UNIT NO. 2 SUPPLEMENTAL LICENSEE EVENT REPORT 92-015-01 This supplemental Licensee Event Report is being submitted pursuant to Code of Federal Regulations 10CFR50.73. The Apparent Cause of Occurrence and Corre~tive Action sections have been modified based upon completed investigations. |
| MJP:pc Distribution Tl,,, | | Sincerely yours, C. A. Vondra General Manager - |
| ic in 4 8 9305030237 930422 ADOCK 05000272 PDR Sincerely yours, C. A. Vondra General Manager -Salem Operations 95*2189 REV 7-92 | | Salem Operations MJP:pc Distribution Tl,,, *v~m* ic in u3~l~Q 48 9305030237 930422 |
| * NRC FORM 366 16-89) U.S. NUCLEAR REGULATORY COMMISSION APPROVED OMB NO. 3150-0104 LICENSEE EVENT REPORT (LERI FACILITY .NAME 111 Salem Generating Station -Unit 2 EXPIRES: 4/30/92 ESTIMATED BURDEN PEA RESPONSE TO COMPLY WTH THIS INFORMATION COLLECTION REQUEST: 50.0 HAS. FORWARD COMMENTS REGARDING BURDEN ESTIMATE TO THE RECORDS AND REPORTS MANAGEMENT BRANCH (P-530), U.S. NUCLEAR REGULATORY COMMISSION, WASHINGTON, DC 20555, AND TO THE PAPERWORK REDUCTION PROJECT 13150-0104). | | ~DR ADOCK 05000272 95*2189 REV 7-92 PDR |
| OFFICE OF MANAGEMENT AND BUDGET, WASHINGTON, DC 20503. PAGE I'S! l OOCKET NUMBER (2) | | * NRC FORM 366 U.S. NUCLEAR REGULATORY COMMISSION 16-89) APPROVED OMB NO. 3150-0104 EXPIRES: 4/30/92 ESTIMATED BURDEN PEA RESPONSE TO COMPLY WTH THIS INFORMATION COLLECTION REQUEST: 50.0 HAS. FORWARD LICENSEE EVENT REPORT (LERI COMMENTS REGARDING BURDEN ESTIMATE TO THE RECORDS AND REPORTS MANAGEMENT BRANCH (P-530), U.S. NUCLEAR REGULATORY COMMISSION, WASHINGTON, DC 20555, AND TO THE PAPERWORK REDUCTION PROJECT 13150-0104). OFFICE OF MANAGEMENT AND BUDGET, WASHINGTON, DC 20503. |
| * o | | l FACILITY .NAME 111 OOCKET NUMBER (2) |
| * 1 5 I o Io I o I 31 111 I TITLE (41 Engineered Safetv Feature: Containment Isolation Valve Failed Closed. EVENT DATE 151 LER NUMBER.161 REPORT DATE (7) OTHER FACILITIES INVOLVED (81 MONTH DAY YEAR YEAR 1::::::::: | | * I PAGE I'S! |
| SEQUENTIAL t:::::::::: | | Salem Generating Station - Unit 2 o *15 I o Io I o I 31 111 TITLE (41 Engineered Safetv Feature: Containment Isolation Valve Failed Closed. |
| REVISION MONTH . DAY 1:::::::::: | | EVENT DATE 151 LER NUMBER.161 REPORT DATE (7) OTHER FACILITIES INVOLVED (81 MONTH DAY YEAR YEAR 1::::::::: SEQUENTIAL t:::::::::: REVISION MONTH . DAY YEAR FACI ~11:v NAMES OOCKET NU.MBEAISI 1:::::::::: NUMBER ~:;::::::::NUMBER Salem Unit.l o I 5 Io I o I o I 2 17 I 2 ol s 3 I 1 9 2 I 9 2 - oI1 b - ol 1 oI 4 2 I2 913 OPERATING THIS REPORT IS SUBMITTED PURSUANT TO THE R~QUIREMENTS OF 10 CFR §: (Check one or more of tho following) (11) |
| NUMBER YEAR FACI NAMES OOCKET NU.MBEAISI Salem Unit.l o I 5 Io I o I o I 2 17 I 2 ol s 3 I 1 9 2 9 I 2 -o I 1 b -ol 1 o I 4 2 I 2 913 OPERATING MODE (9) THIS REPORT IS SUBMITTED PURSUANT TO THE OF 10 CFR §: (Check one or more of tho following) | | MODE (9) 1 20.402(bl |
| (11) 1 20.402(bl 20.405(c) . 60.73(1)(2)(ivl .._ 1--20.406(1)(1 | | ~ |
| )(i) 60.311(c)(1) 50.7311H21M | | 20.405(c) |
| ,_ ._... ,___ 73.71(b) 73.71(c). | | .._ . 60.73(1)(2)(ivl 1-- |
| POWER LEVEL (10) 1 0 0 20.405(1)(1
| | 73.71(b) |
| )(ii) 50.38(c)(2) 50.7311H2Hvii)
| | POWER LEVEL |
| OTHER (S1>ocify in Absrract ._... -f---bolow and in Toxt. NRC Form '{ {<;:;::::;::::
| | ,_ 20.406(1)(1 )(i) |
| :=:-:-:=:*:=
| | ._... 60.311(c)(1) |
| .*:* *:*.:.*. :*:*:*:* 20.406(1)(1)(iiil 60.73(1)(2Hil 60.73(11(2)(Yiii)(A) 366AI *'*'""" :=:*""" *'""" -...._ -20.406(1)(1 | | ~ |
| )(ly) 150.73(1)(2)(iil 50.73(11(2)(viiil(BI
| | 50.7311H21M ,___ 73.71(c). |
| ._... :*:-:-: ..... ,. . , .. .......... , .......... | | '{ |
| "'"' 20,406(1)(1 IM 60.73(1)(2)(iii) 50.73(1)(2)(x)
| | (10) |
| .... ..........
| | *'*'""" :=:*""" |
| ........ ,*.'.' . """"""* ... ''""" LICENSEE CONTACT FOR THIS LER (12) NAME TELEPHONE NUMBER AREA CODE M J. Pollack -LER Coordinator 6 I 0 I 9 3 13 I 9 1-12 I 0 12 I 2 CAUSE SYSTEM COMPONENT I I I I I I I I COMPLETE ONE LINE FOR EACH FAILURE DESCRIBED IN THIS REPORT (131 MANUFAC-*
| | 1 0 0 |
| TUR ER I I I I I I REPORTABLE'::::::::;:,.;:;:;:::::::::::::::r>>>?
| | {<;:;::::;:::: :=:-:-:=:*:= .*:* |
| TO NPRDS :::::::::::::::::::::::::::::::
| | 20.405(1)(1 )(ii) 20.406(1)(1)(iiil 50.38(c)(2) 60.73(1)(2Hil -- 50.7311H2Hvii) 60.73(11(2)(Yiii)(A) f--- |
| :*:*:*:*:*:-:*:*
| | OTHER (S1>ocify in Absrract bolow and in Toxt. NRC Form 366AI |
| :*:*:*:*:*:*:*:
| | .,. ..........:*:-:-: ,.......... 20.406(1)(1 )(ly) |
| ;.;.:*:*:*:*
| | ~ |
| !*1 .. *:1:1:::::::::i*:::l*::*:'l*.**:1.:*1.:::.*::1:1 CAUSE SYSTEM I I COMPONENT MANUFAC* TUR ER I I I I I I I . I I I I l SUPPLEMENTAL REPORT EXPECTED (14) MONTH DAY YEAR I EXPECTED SUBMISSION DATE .1151 I l YES (If .yes, com1>fete EXPECTED SUBMISSION DATE! ABSTRACT (limit to 1400 spacfls, i.t1., approximotely fifteen single-space lines} (16) On 8/31/92, during normal power operation, the 2A Control Air Header inlet air operated globe valve (21CA330) failed closed. At the time of the event, Solid State Protection System (SSPS) Train A slave relay testing was in progress.
| | 150.73(1)(2)(iil |
| The 21CA330 valve is a Masoneillan International air operated globe valve (model number 38-20561).
| | ._... 50.73(11(2)(viiil(BI |
| The 21CA330 valve is a Containment Isolation Valve. The root cause of this event is the "Design, Manufacturing, Construction/Installation" of the SSPS circuit. When Test switch 612 was placed in the operate output position, during SSPS Train A slave relay*continuity check, the 21CA330 valve closed. Investigation revealed that during testing, the test voltage is significant enough to cause solenoid valve pick-up resulting in CA330 valve closure. In.March 1992, the Unit 2 CA330 solenoid valves were replaced with equivalent components (ASCO Model NP8342B23E replaced with ASCO Model NPK8342B23E).
| | """"""* ... ''""" 20,406(1)(1 IM 60.73(1)(2)(iii) 50.73(1)(2)(x) |
| CA330 valve inadvertent closure was not expected since the valves were equivalent.
| | LICENSEE CONTACT FOR THIS LER (12) |
| Testing has shown that the same solenoid valves can have as much as a 30 volt difference in pick-up. A design change is being implemented during the current Unit 2 refueling outage. It adds a test circuit potentiometer to reduce the voltage seen by the CA33'0 solenoid valve during slave relay testing and the solenoid valve model is being replaced with the model used in Unit 1. Also, the slave relay circuit continuity test light bulb is being replaced (both Salem Units) with a higher resistance bulb, further reducing the voltage seen by the CA330 solenoid valve. NRC Form 366 (6-89) I LICENSEE EVENT REPORT (LER) TEXT CONTINUATION Salem Generating Station Unit 2 DOCKET NUMBER. 5000311 PLANT AND SYSTEM IDENTIFICATION:
| | NAME TELEPHONE NUMBER AREA CODE M J. Pollack - LER Coordinator 6 I 0 I 9 3 13 I 9 1- 12 I 0 12 I 2 COMPLETE ONE LINE FOR EACH COM~ONENT FAILURE DESCRIBED IN THIS REPORT (131 MANUFAC-* REPORTABLE'::::::::;:,.;:;:;:::::::::::::::r>>>? MANUFAC* |
| Westinghouse
| | CAUSE SYSTEM COMPONENT CAUSE SYSTEM COMPONENT TUR ER TO NPRDS ::::::::::::::::::::::::::::::: :*:*:*:*:*:-:*:* TUR ER I I I I I I I !*1..*:1:1:::::::::i*:::l*::*:'l*.**:1.:*1.:::.*::1:1 I I I I I I I I I I I I I I I I .I I I I l SUPPLEMENTAL REPORT EXPECTED (14) MONTH DAY YEAR EXPECTED |
| -Pressurized Water Reactor LER NUMBER 92-015-01 PAGE 2 of 4 Energy Industry Identification System (EIIS) codes are identified in the text as {xx} IDENTIFICATION OF OCCURRENCE:
| | ~NO SUBMISSION l YES (If .yes, com1>fete EXPECTED SUBMISSION DATE! |
| Engineered Safety Feature: Containment Isolation Valve Failed Close Event Date: 8/31/92 Report Date: 4/22/93 This report is a supplement to LER 311/92-015-00 whi'.ch was initiated by Incident Report l'Jo. 92-553. The Apparent Cause of Occurrence section has been revised to address the results of subsequent investigation (committed to in the original LER). CONDITIONS PRIOR TO OCCURRENCE:
| | DATE .1151 I I I ABSTRACT (limit to 1400 spacfls, i.t1., approximotely fifteen single-space typ~writton lines} (16) |
| Mode 1 Reactor Power 100% -Unit Load 1130 MWe DESCRIPTION OF OCCURRENCE:
| | On 8/31/92, during normal power operation, the 2A Control Air Header inlet air operated globe valve (21CA330) failed closed. At the time of the event, Solid State Protection System (SSPS) Train A slave relay testing was in progress. The 21CA330 valve is a Masoneillan International air operated globe valve (model number 38-20561). The 21CA330 valve is a Containment Isolation Valve. The root cause of this event is the "Design, Manufacturing, Construction/Installation" of the SSPS circuit. When Test switch 612 was placed in the operate output position, during SSPS Train A slave relay*continuity check, the 21CA330 valve closed. Investigation revealed that during testing, the test voltage is significant enough to cause solenoid valve pick-up resulting in CA330 valve closure. In.March 1992, the Unit 2 CA330 solenoid valves were replaced with equivalent components (ASCO Model NP8342B23E replaced with ASCO Model NPK8342B23E). CA330 valve inadvertent closure was not expected since the valves were equivalent. Testing has shown that the same solenoid valves can have as much as a 30 volt difference in pick-up. A design change is being implemented during the current Unit 2 refueling outage. It adds a test circuit potentiometer to reduce the voltage seen by the CA33'0 solenoid valve during slave relay testing and the solenoid valve model is being replaced with the model used in Unit |
| On August 31, 1992, at 0345 hours, during normal power operation, the* 2A Control Air Header inlet air operated globe valve (21CA330) failed closed. At the time of the event, Solid State Protection System (SSPS) {JC} Train A slave relay testing was in progress.
| | : 1. Also, the slave relay circuit continuity test light bulb is being replaced (both Salem Units) with a higher resistance bulb, further reducing the voltage seen by the CA330 solenoid valve. |
| The 21CA330 valve is a Masoneillan International air operated globe valve (model number 38-20561). .It takes air to open and is spring loaded to fail close. The 21CA330 valve is a Containment Isolation Valve {JM}. Containment isolation is an Engineered Safety Feature (ESF). Therefore, on August 31, 1992, at 0436 hours, the Nuclear Regulatory Commission (NRC) was notified of the valve closure, in accordance with Code of Federal Regulations lOCFR 50.72(b)(i) (ii). APPARENT CAUSE OF OCCURRENCE:
| | NRC Form 366 (6-89) |
| | |
| | LICENSEE EVENT REPORT (LER) TEXT CONTINUATION Salem Generating Station DOCKET NUMBER. LER NUMBER PAGE Unit 2 5000311 92-015-01 2 of 4 PLANT AND SYSTEM IDENTIFICATION: |
| | Westinghouse - Pressurized Water Reactor Energy Industry Identification System (EIIS) codes are identified in the text as {xx} |
| | IDENTIFICATION OF OCCURRENCE: |
| | Engineered Safety Feature: Containment Isolation Valve Failed Close Event Date: 8/31/92 Report Date: 4/22/93 This report is a supplement to LER 311/92-015-00 whi'.ch was initiated by Incident Report l'Jo. 92-553. The Apparent Cause of Occurrence section has been revised to address the results of subsequent investigation (committed to in the original LER). |
| | CONDITIONS PRIOR TO OCCURRENCE: |
| | Mode 1 Reactor Power 100% - Unit Load 1130 MWe DESCRIPTION OF OCCURRENCE: |
| | On August 31, 1992, at 0345 hours, during normal power operation, the* |
| | 2A Control Air Header inlet air operated globe valve (21CA330) failed closed. At the time of the event, Solid State Protection System (SSPS) {JC} Train A slave relay testing was in progress. |
| | The 21CA330 valve is a Masoneillan International air operated globe valve (model number 38-20561). .It takes air to open and is spring loaded to fail close. |
| | The 21CA330 valve is a Containment Isolation Valve {JM}. Containment isolation is an Engineered Safety Feature (ESF). Therefore, on August 31, 1992, at 0436 hours, the Nuclear Regulatory Commission (NRC) was notified of the valve closure, in accordance with Code of Federal Regulations 10CFR 50.72(b)(i) (ii). |
| | APPARENT CAUSE OF OCCURRENCE: |
| The root cause of this event is "Design Manufacturing, Construction/ | | The root cause of this event is "Design Manufacturing, Construction/ |
| Installation" 6f the SSPS circuit. As stated above, SSPS Train A slave relay testing was iri progress. | | Installation" 6f the SSPS circuit. |
| When Test Switch 612 was placed in the operate output position the 21CA330 .valve closed. The slave relay testing involved a continuity check of the CA330 solenoid valve circuit using low current circuit input. Investigation revealed that the test voltage is sufficient to cause solenoid valve resulting in CA330 valve closure. This LICENSEE EVENT REPORT (LER) TEXT CONTINUATION Salem Generating Station Unit 2 APPARENT CAUSE OF OCCURRENCE: | | As stated above, SSPS Train A slave relay testing was iri progress. |
| | When Test Switch 612 was placed in the operate output position the 21CA330 .valve closed. The slave relay testing involved a continuity check of the CA330 solenoid valve circuit using low current circuit input. Investigation revealed that the test voltage is sufficient to cause solenoid valve pick-~p resulting in CA330 valve closure. This |
| | |
| | LICENSEE EVENT REPORT (LER) TEXT CONTINUATION Salem Generating Station DOCKET NUMBER LER NUMBER PAGE Unit 2 5000311 92-015-01 3 of 4 APPARENT CAUSE OF OCCURRENCE: (cont'd} |
| was reproducible. | | was reproducible. |
| DOCKET NUMBER 5000311 (cont'd} LER NUMBER 92-015-01 PAGE 3 of 4 In March 1992, the Unit 2 CA330 solenoid valves were replaced with equivalent components (ASCO Model NP8342B23E replaced_with ASCO Model NPK8342B23E).
| | In March 1992, the Unit 2 CA330 solenoid valves were replaced with equivalent components (ASCO Model NP8342B23E replaced_with ASCO Model NPK8342B23E). CA330 valve inadvertent closure, during SSPS slave relay testing, was not expected since the.valves were equivalent. |
| CA330 valve inadvertent closure, during SSPS slave relay testing, was not expected since the.valves were equivalent. | | Prior to this component replacement, Unit 2 CA330 valves had not experienced inadvertent.closure during SSPS slave relay testing~ The difference between the two ASCO models is that the older model uses leaded terminal connectors and the newer model uses screwed terminal connectors. Investigation revealed that this replacement was not a direct contributing factor to CA330 valve inadvertent closure. |
| Prior to this component replacement, Unit 2 CA330 valves had not experienced inadvertent.closure during SSPS slave relay The difference between the two ASCO models is that the older model uses leaded terminal connectors and the newer model uses screwed terminal connectors. | | Subsequent testing has shown that the same solenoid valves can have as much as a 30 volt difference in pick-up. |
| Investigation revealed that this replacement was not a direct contributing factor to CA330 valve inadvertent closure. Subsequent testing has shown that the same solenoid valves can have as much as a 30 volt difference in pick-up. ANALYSIS OF OCCURRENCE: | | ANALYSIS OF OCCURRENCE: |
| Though the 21CA330 valve is the Control Air Header 2A inlet valve, it also functions as a containment isolation valve. The operability of the containment isolation valves ensures that the containment atmosphere will be isolated from the outside environment in the event of a release of radioactive material to the containment atmosphere or pressurization of the containment. | | Though the 21CA330 valve is the Control Air Header 2A inlet valve, it also functions as a containment isolation valve. The operability of the containment isolation valves ensures that the containment atmosphere will be isolated from the outside environment in the event of a release of radioactive material to the containment atmosphere or pressurization of the containment. |
| In this event, the 21CA330 valve failed to the safe configuration, as per design. Therefore, there was no affect on the health or safety of the public. However, since containment isolation is an ESF function, the 21CA330 valve inadvertent closure is reportable in accordance with Code of Federal Regulations lOCFR 50.73(a) (2) (iv). In 1986, the Salem Unit 1 CA330 valves failed closed during SSPS testing. The Unit 1 CA330 solenoid valves had been replaced_ | | In this event, the 21CA330 valve failed to the safe configuration, as per design. Therefore, there was no affect on the health or safety of the public. However, since containment isolation is an ESF function, the 21CA330 valve inadvertent closure is reportable in accordance with Code of Federal Regulations 10CFR 50.73(a) (2) (iv). |
| with a model of lower wattage (not an equivalent replacement).* | | In 1986, the Salem Unit 1 CA330 valves failed closed during SSPS testing. The Unit 1 CA330 solenoid valves had been replaced_ with a model of lower wattage (not an equivalent replacement).* Following that installation a series of inadvertent valve closures occurred. A design change, to add test circuit potentiometers, was completed eliminating Unit 1 CA330 valve inadvertent closures (until recently). In 1986, test circuit potentiometer installation was considered for Unit 2; however, it was determined to* not be warranted since its solenoid valves were different from Unit l's (and had not been replaced) . |
| Following that installation a series of inadvertent valve closures occurred. | | Recently, Unit 1 CA330 valves have experienced inadvertent closure during SSPS slave relay testing. This is aiso attributed to design of the SSPS circuit. |
| A design change, to add test circuit potentiometers, was completed eliminating Unit 1 CA330 valve inadvertent closures (until recently). | | On June 19, 1989 (reference LER 272/89-027-00), a similar event occurred. In that event, a main steam isolation valve (MSIV) failed closed during SSPS surveillance testing.* The MSIV closure resulted in a reactor trip. The cause of that event was attributed to the continuity check circuit design. |
| In 1986, test circuit potentiometer installation was considered for Unit 2; however, it was determined to* not be warranted since its solenoid valves were different from Unit l's (and had not been replaced) . Recently, Unit 1 CA330 valves have experienced inadvertent closure during SSPS slave relay testing. This is aiso attributed to design of the SSPS circuit. On June 19, 1989 (reference LER 272/89-027-00), a similar event occurred. | | |
| In that event, a main steam isolation valve (MSIV) failed closed during SSPS surveillance testing.* | | LICENSEE EVENT REPORT (LER) TEXT CONTINUATION Salem Generating Station DOCKET NUMBER LER NUMBER PAGE. |
| The MSIV closure resulted in a reactor trip. The cause of that event was attributed to the continuity check circuit design. I LICENSEE EVENT REPORT (LER) TEXT CONTINUATION Salem Generating Station Unit 2 CORRECTIVE ACTION: DOCKET NUMBER LER NUMBER 92-015-01 PAGE. 4 of 4 A design change is being implemented during the current Unit 2 refueling outage. It adds a test circuit potentiometer (similar to Unit l's design) to reduce the voltage seen by the CA330 solenoid valve during slave relay testing and the solenoid valve model is being replaced with the model used in Unit 1. The slave relay circuit continuity test light bulb is being replaced (both Salem Units) with a higher resistance bulb, further reducing the voltage seen by the CA330 solenoid va we. MJP:pc SORC Mtg. 93-036 General Manager -Salem Operations}} | | Unit 2 ~5000311 92-015-01 4 of 4 CORRECTIVE ACTION: |
| | A design change is being implemented during the current Unit 2 refueling outage. It adds a test circuit potentiometer (similar to Unit l's design) to reduce the voltage seen by the CA330 solenoid valve during slave relay testing and the solenoid valve model is being replaced with the model used in Unit 1. |
| | The slave relay circuit continuity test light bulb is being replaced (both Salem Units) with a higher resistance bulb, further reducing the voltage seen by the CA330 solenoid va we. |
| | General Manager - |
| | Salem Operations MJP:pc SORC Mtg. 93-036}} |
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LER 98-016-00:on 981219,ECCS Leakage Was Outside of Design Value.Caused by Leakage Past Seat of 21RH34 Manual Drain. Valve 21RH34 Was Reseated.With 990118 Ltr
ML18106B0081998-12-24024 December 1998
LER 97-001-01:on 970215,failure to Perform TS Surveillance of Component Cooling Water Sys Check Valves Occurred.Caused by Inadequate Communication Between EOP Group & IST Reviewers.Procedure Revised.With 981224 Ltr
ML18106B0021998-12-17017 December 1998
LER 98-015-01:on 980924,improper Installation of Test Equipment to RPS Occurred.Caused by Inadequate 10CFR50.59 Applicability Reviews During Past Revs.Revised Procedures. with 981217 Ltr
ML18106A9551998-11-0303 November 1998
LER 96-013-01:on 960711,concluded That Current Gain & Bias Settings Had Rendered Overtemperature Delta Temp Protection Channels Inoperable.Caused by Scaling Error.Licensee Will Revise Scaling Calculations.With 981105 Ltr
ML18106A9451998-10-30030 October 1998
LER 97-004-01:on 970408,failure to Comply with TS Action Statement,Dg Start & Inadequate Surveillance Testing,Was Noted.Caused by Inadequate Tracking of Inoperable Equipment. Discussed Event & Lessons Learned.With 981022 Ltr
ML18106A9491998-10-22022 October 1998
LER 98-015-00:on 980924,identified Improper Installation of Test Equipment to Rps.Cause Indeterminate.Procedures for Installation of Test Equipment for Collection of State Point Data Were Placed on Administrative Hold.With 981022 Ltr
ML18106A9301998-10-21021 October 1998
LER 98-014-00:on 980725,noted Improper Calibr of Liquid Radwaste Effluent Line Radiation Monitor.Caused by Inattention to Detail by Maint Personnel.Channel Calibr Was Successfully Performed on 1R18 on 980821.With 981019 Ltr
ML18106A9071998-10-0101 October 1998
LER 98-014-00:on 980918,discovered That Fire Barrier Matl for HVAC Ducts Does Not Meet Required Level of Fire Resistance.Cause Indeterminate.Established Appropriate Compensatory Actions for Fire Barriers.With 981001 Ltr
ML18106A8951998-09-28028 September 1998
LER 98-012-01:on 980725,noted That Afs Was Operated with Less than Required Number of Operable AFW Pumps.Caused by Improper Procedure Implementation.Runout Protection Pressure Device for 22 AFW Pumps Was Returned to Svc.With 980928 Ltr
ML18106A8821998-09-21021 September 1998
LER 98-013-00:on 980820,noted Surveillance of Containment Penetration Overcurrent Protection Devices Missed.Caused by Human Error.Satisfactorily Tested Apprpriate Breakers & Disciplined Involved Personnel.With 980921 Ltr
ML18106A8791998-09-16016 September 1998
LER 96-006-01:on 960717,determined That non-radioactive Liquid Basin Radwaste Monitor Inoperable During Low Head Conditions.Caused by Inadequate Design Change Package.Design Change 1EC3663-01 Has Been Installed.With 980916 Ltr
ML18106A8801998-09-0808 September 1998
LER 98-013-00:on 980806,operation with TS Required Equipment OOS Was Noted.Caused by Human Error.Reviewed Processes & Practices Re Safety Sys Status Control,Procedure Rev & Extra Training.With 980908 Ltr
ML18106A8531998-08-27027 August 1998
LER 98-007-00:on 980730,reactor Coolant Instrument Line through-wall Leak Was Noted.Cause of Event Has Not Yet Been Determined.Assembled Root Cause Team & Replaced Affected tubing.W/980827 Ltr
ML18106A8521998-08-27027 August 1998
LER 98-011-00:on 980803,ESFA During a 4KV Automatic Transfer Test Was Noted.Caused by Premature Release of Control Console Pushbutton Due to Inadequate Procedural Step.Revised procedure.W/980827 Ltr
ML18106A8421998-08-24024 August 1998
LER 98-012-00:on 980725,discovered That Plant Had Operated in Modes 1 & 2 w/twenty-two AFW Pumps Inoperable.Caused by Failure to Restore Pump Runout Protection Pressure Device to Svc.Returned Subject Device to svc.W/980824 Ltr
ML18106A8431998-08-24024 August 1998
LER 98-009-00:on 980810,failure to Post Continuous Firewatch as Required by Fire Protection Plan Noted.Caused by Failure to Recognize Concurrent Conditions.Continuous Firewatch Was Posted Immediately & Repaired Smoke detectors.W/980824 Ltr
ML18106A8141998-08-13013 August 1998
LER 98-010-00:on 980714,determined That Leakage from Boron Injection Tank Exceeded Max Allowable ECCS Leakage from Sources Outside Containment.Caused by Leaking 2SJ404 Manual Sample valve.2SJ404 Valve repaired.W/980813 Ltr
ML18106A8201998-08-13013 August 1998
LER 98-012-00:on 980715,potential to Exceed Rating of Piping Due to Isolation of Overpressure Protection Line Was Noted. Caused by Inadequate Procedural Guidance.Appropriate Operations Dept Procedures Have Been revised.W/980813 Ltr
ML18106A6931998-06-29029 June 1998
LER 98-003-00:on 980122,inappropriate Plugging of Tubes R9C60 & R10C60 in Salem Unit 2 Sg,Was Performed.Caused by Failure of Qualification,Verification & Validation Process. Tubes Reviewed to Verify No Others Inappropriately Plugged
ML18106A6471998-06-0404 June 1998
LER 98-011-00:on 980505,improper Isolation of Single Cell Battery Charger from 125 Vdc Battery Was Noted.Caused by Inadequate 10CFR50.59 Applicability Review.Placed Procedure SC.MD-CM.ZZ-0024(Q) on Administrative hold.W/980604 Ltr
ML18106A6421998-06-0101 June 1998
LER 98-010-00:on 931019,reactor Pressure Vessel Insp Plugs Were Out of Configuration,Was Noted.Caused by Personnel Error.Proper Configuration Was Restored Shortly After Discovery Prior to Entering Mode 2.W/980601 Ltr
ML18106A6431998-05-29029 May 1998
LER 98-006-01:on 980227,determined Incorrect Scaling Error of First Stage Pressure Transmitter Existed.Caused by Human Error.Revised Setpoint Calculation SC-MS002-01 & Revised Associated Instrument Calibr Database info.W/980529 Ltr
ML18106A6141998-05-18018 May 1998
LER 98-008-00:on 970814,failure to Test 21 & 22 AF 40 Valves in Closed Direction as Required by TS 4.0.5 Was Noted.Caused by Inadequate Design Mod Process.Motor Driven 21/22 AF 40 Valves Were Tested IAW Revised procedure.W/980518 Ltr
ML18106A5901998-05-0101 May 1998
LER 98-009-00:on 980405,epoxy Missing from Terminals of H Analyzer Was Noted.Caused by Inadequate Development of Procedure.H Analyzers Were Repaired & Review of Other Safety Related Equipment in Containment Was performed.W/980501 Ltr
ML18106A5611998-04-20020 April 1998
LER 98-008-00:on 980323,inadequate Testing of Salem Unit 1 Containment Air Locks Resulted in Entering TS 3.0.3.Caused by less-than-adequate Work Practices During Replacement of Equalizing Valve.Salem Unit 2 Airlocks Were Inspected
ML18106A6061998-04-0101 April 1998
Corrected LER 98-004-00:on 980302,failure to Comply W/Tss 4.11.1.1.2 & 3.3.3.8 Was Noted.Caused by Organizational Deficiency.Steps Have Been Taken to Correctly Document Safety Factors.Corrects Prior Similar Occurrences
ML18106A4451998-04-0101 April 1998
LER 98-004-00:on 980302,failure to Perform TS 4.11.1.1.2 & 3.3.3.8 Was Noted.Caused by Organizational Deficiency.Steps Were Taken to Correctly Document Safety factors.W/980401 Ltr
ML18106A4351998-03-30030 March 1998
LER 98-006-00:on 980227,incorrect Scaling of First Stage Turbine Impulse Pressure Transmitters Noted.Cause Indeterminate.Implemented Procedure Changes & re-scaled Affected Turbine Impulse Pressure transmitters.W/980330 Ltr
ML18106A3961998-03-20020 March 1998
LER 98-005-00:on 980219,inoperability of Twelve EDG Fuel Oil Transfer Pump (FOTP) Noted.Caused by Installation of Incorrect Control Switch.Installed Correct off-auto-manual Switch & Verified Operability of Twelve FOTP.W/980320 Ltr
ML18106A5781998-03-20020 March 1998
Corrected LER 98-005-00:on 980219,inoperability of 12 Fuel Oil Transfer Pump (Fotp),Noted.Caused by Installation of Incorrect Control Switch.Field Insp Performed to Verify Configuration of Switches for 11,21 & 22 FOTPs
ML18106A4021998-03-20020 March 1998
LER 98-007-00:on 980218,failure to Establish Containment Integrity (Closure) Prior to Fuel Movement Was Noted.Caused by Failure to Identify & Include Condensate Pot Vent in Appropriate Valve Lineup.Valves identified.W/980320 Ltr
ML18106A4031998-03-20020 March 1998
LER 98-006-00:on 980221,ESF Actuation of 11 & 12 Auxiliary Feedwater Pumps Occurred.Caused by Human Error.Operators Promptly Established Feedwater to All SG & Restored Proper Water levels.W/980320 Ltr
1999-08-26
[Table view]
Category:RO)
MONTHYEARML18107A5031999-08-26026 August 1999
LER 99-006-00:on 990729,determined That SG Blowdown RMs Setpoint Was non-conservative.Caused by Inadequate ACs for Incorporating Original Plant Licensing Data Into Plant Procedures.Blowdown Will Be Restricted.With 990826 Ltr
ML18107A4691999-07-28028 July 1999
LER 99-008-00:on 990714,determined That Limit Switch Cables Were Subject to Multiple Hot Shorts in Same Fire Area.Caused by Inadequate Original Post Fire Safe Shutdown Analysis.All Limit Switch Cables for MOVs Were Reviewed.With 990728 Ltr
ML18107A4441999-07-0606 July 1999
LER 99-007-00:on 990605,surveillance for Quadrant Power Tilt Ratio (QPTR) Was Missed.Caused by Human Error.Qptr Calculation Was Performed & Personnel Involved Have Been Held Accountable IAW Pse&G Policies.With 990706 Ltr
ML18107A4211999-07-0202 July 1999
LER 99-005-00:on 990605,11 Containment Declared Inoperable. Caused by Valves 11SW72 & 11SW223 Both Leaking.Procedure S1.OP-ST.SW-0010(Q) Was Enhanced to Provide Specific Instructions to Ensure Proper Sequencing.With 990702 Ltr
ML18107A4321999-07-0101 July 1999
LER 99-006-01:on 990501,determined That There Was No Flow in One of Four Injection Legs.Caused by Sticking of Valve in Safety Injection Discharge Line to 21 Cold Leg.Valve Was Cut Out of Sys & Replaced.With 990701 Ltr
ML18107A4331999-07-0101 July 1999
LER 99-002-01:on 990405,determined That 2SA118 Failed as Found Leakrate Test.Caused by Foreign Matl Found in 2SA118 valve.2SA118 Valve Was Cycled Several Times & Seat Area Was Air Blown in Order to Displace Foreign Matl.With 990701 Ltr
ML18107A3951999-06-17017 June 1999
LER 99-004-00:on 990520,reactor Tripped from 100% Power,Due to Negative Flux Trip Signal from Nuclear Instrumentation. Cause Has Not Been Determined.Discoloration Was Identified on One of Penetrations.With 990617 Ltr
ML18107A3661999-06-0909 June 1999
LER 99-003-00:on 990513,unplanned Entry Into TS 3.0.3 Was Made.Caused by Human error.Re-positioned Creacs Supply Fan Selector Switches & Revised Procedures S1 & S2.OP-ST.SSP-0001(Q).With 990609 Ltr
ML18107A3551999-06-0202 June 1999
LER 99-005-00:on 990504,failure to Meet TS Action Statement Requirements for High Oxygen Concentration in Waste Gas Holdup Sys Occurred.Caused by Inability of Operators. Existing Procedures Will Be Evaluated.With 990602 Ltr
ML18107A3541999-06-0101 June 1999
LER 99-006-00:on 990501,HHSI Flow Balance Discrepancy Was Noted During Surveillance.Caused by Sticking of Check Valve in SI Discharge Line to 21 Cold Leg.Valve 21SJ17,was Cut Out of Sys & Replaced.With 990601 Ltr
ML18107A2931999-05-12012 May 1999
LER 99-002-00:on 990413,determined That Number 12 Auxiliary Bldg Exhaust Fan Was Rotating Backwards.Caused by mis-wiring of Motor Due to Human Error by Maint technician.Mis-wiring Was Corrected & Fan Was Returned to Svc.With 990512 Ltr
ML18107A2781999-05-10010 May 1999
LER 99-004-00:on 990411,automatic Actuation of ESF Occurred During Reactor Vessel Head Removal in Support of Refueling Operations.Caused by High Radiation Condition.Containment Atmosphere Was Monitored.With 990505 Ltr
ML18107A2791999-05-0404 May 1999
LER 99-003-00:on 990406,all Salem Unit 2 Chillers Rendered Inoperable.Caused by Human Error.Lessons Learned from Event Were Communicated to All Operators by Including Them in Night Orders.With 990504 Ltr
ML18107A2741999-05-0303 May 1999
LER 99-002-00:on 990405,determined That Containment Isolation Valve Failed as Found Leakrate Test.Caused by Foreign Matl Blocking Valves from Closing.Check Valve Mechanically Agitated.With 990504 Ltr
ML18107A2351999-04-23023 April 1999
LER 99-001-00:on 990330,MSSV Failed Lift Set Test.Caused by Setpoint Variance Which Is Result of Aging.Valves Were Adjusted & Retested to Ensure TS Tolerance.With 990423 Ltr
ML18106B1471999-03-29029 March 1999
LER 99-001-00:on 990228,reactor Scram Was Noted as Result of Turbine Trip.Caused by Operator Error.Lesson Plans Revised to Explicitly Demonstrate Manner in Which Valve Functions. with 990329 Ltr
ML18106B0701999-02-16016 February 1999
LER 98-015-00:on 981208,inadvertent Discharge Through RHR Relief Valve During Startup Was Noted.Caused by Operator Performing Too Many Tasks Simultaneously.Appropriate Actions Have Been Taken IAW Policies & Procedures.With 990216 Ltr
ML18106B0491999-01-28028 January 1999
LER 98-007-01:on 980730,reactor Coolant Instrument Line through-wall Leak Was Noted.Caused by Transgranular Stress Corrosion Cracking.Replaced Affected Tubing.With 990128 Ltr
ML18106B0401999-01-18018 January 1999
LER 98-016-00:on 981219,ECCS Leakage Was Outside of Design Value.Caused by Leakage Past Seat of 21RH34 Manual Drain. Valve 21RH34 Was Reseated.With 990118 Ltr
ML18106B0081998-12-24024 December 1998
LER 97-001-01:on 970215,failure to Perform TS Surveillance of Component Cooling Water Sys Check Valves Occurred.Caused by Inadequate Communication Between EOP Group & IST Reviewers.Procedure Revised.With 981224 Ltr
ML18106B0021998-12-17017 December 1998
LER 98-015-01:on 980924,improper Installation of Test Equipment to RPS Occurred.Caused by Inadequate 10CFR50.59 Applicability Reviews During Past Revs.Revised Procedures. with 981217 Ltr
ML18106A9551998-11-0303 November 1998
LER 96-013-01:on 960711,concluded That Current Gain & Bias Settings Had Rendered Overtemperature Delta Temp Protection Channels Inoperable.Caused by Scaling Error.Licensee Will Revise Scaling Calculations.With 981105 Ltr
ML18106A9451998-10-30030 October 1998
LER 97-004-01:on 970408,failure to Comply with TS Action Statement,Dg Start & Inadequate Surveillance Testing,Was Noted.Caused by Inadequate Tracking of Inoperable Equipment. Discussed Event & Lessons Learned.With 981022 Ltr
ML18106A9491998-10-22022 October 1998
LER 98-015-00:on 980924,identified Improper Installation of Test Equipment to Rps.Cause Indeterminate.Procedures for Installation of Test Equipment for Collection of State Point Data Were Placed on Administrative Hold.With 981022 Ltr
ML18106A9301998-10-21021 October 1998
LER 98-014-00:on 980725,noted Improper Calibr of Liquid Radwaste Effluent Line Radiation Monitor.Caused by Inattention to Detail by Maint Personnel.Channel Calibr Was Successfully Performed on 1R18 on 980821.With 981019 Ltr
ML18106A9071998-10-0101 October 1998
LER 98-014-00:on 980918,discovered That Fire Barrier Matl for HVAC Ducts Does Not Meet Required Level of Fire Resistance.Cause Indeterminate.Established Appropriate Compensatory Actions for Fire Barriers.With 981001 Ltr
ML18106A8951998-09-28028 September 1998
LER 98-012-01:on 980725,noted That Afs Was Operated with Less than Required Number of Operable AFW Pumps.Caused by Improper Procedure Implementation.Runout Protection Pressure Device for 22 AFW Pumps Was Returned to Svc.With 980928 Ltr
ML18106A8821998-09-21021 September 1998
LER 98-013-00:on 980820,noted Surveillance of Containment Penetration Overcurrent Protection Devices Missed.Caused by Human Error.Satisfactorily Tested Apprpriate Breakers & Disciplined Involved Personnel.With 980921 Ltr
ML18106A8791998-09-16016 September 1998
LER 96-006-01:on 960717,determined That non-radioactive Liquid Basin Radwaste Monitor Inoperable During Low Head Conditions.Caused by Inadequate Design Change Package.Design Change 1EC3663-01 Has Been Installed.With 980916 Ltr
ML18106A8801998-09-0808 September 1998
LER 98-013-00:on 980806,operation with TS Required Equipment OOS Was Noted.Caused by Human Error.Reviewed Processes & Practices Re Safety Sys Status Control,Procedure Rev & Extra Training.With 980908 Ltr
ML18106A8531998-08-27027 August 1998
LER 98-007-00:on 980730,reactor Coolant Instrument Line through-wall Leak Was Noted.Cause of Event Has Not Yet Been Determined.Assembled Root Cause Team & Replaced Affected tubing.W/980827 Ltr
ML18106A8521998-08-27027 August 1998
LER 98-011-00:on 980803,ESFA During a 4KV Automatic Transfer Test Was Noted.Caused by Premature Release of Control Console Pushbutton Due to Inadequate Procedural Step.Revised procedure.W/980827 Ltr
ML18106A8421998-08-24024 August 1998
LER 98-012-00:on 980725,discovered That Plant Had Operated in Modes 1 & 2 w/twenty-two AFW Pumps Inoperable.Caused by Failure to Restore Pump Runout Protection Pressure Device to Svc.Returned Subject Device to svc.W/980824 Ltr
ML18106A8431998-08-24024 August 1998
LER 98-009-00:on 980810,failure to Post Continuous Firewatch as Required by Fire Protection Plan Noted.Caused by Failure to Recognize Concurrent Conditions.Continuous Firewatch Was Posted Immediately & Repaired Smoke detectors.W/980824 Ltr
ML18106A8141998-08-13013 August 1998
LER 98-010-00:on 980714,determined That Leakage from Boron Injection Tank Exceeded Max Allowable ECCS Leakage from Sources Outside Containment.Caused by Leaking 2SJ404 Manual Sample valve.2SJ404 Valve repaired.W/980813 Ltr
ML18106A8201998-08-13013 August 1998
LER 98-012-00:on 980715,potential to Exceed Rating of Piping Due to Isolation of Overpressure Protection Line Was Noted. Caused by Inadequate Procedural Guidance.Appropriate Operations Dept Procedures Have Been revised.W/980813 Ltr
ML18106A6931998-06-29029 June 1998
LER 98-003-00:on 980122,inappropriate Plugging of Tubes R9C60 & R10C60 in Salem Unit 2 Sg,Was Performed.Caused by Failure of Qualification,Verification & Validation Process. Tubes Reviewed to Verify No Others Inappropriately Plugged
ML18106A6471998-06-0404 June 1998
LER 98-011-00:on 980505,improper Isolation of Single Cell Battery Charger from 125 Vdc Battery Was Noted.Caused by Inadequate 10CFR50.59 Applicability Review.Placed Procedure SC.MD-CM.ZZ-0024(Q) on Administrative hold.W/980604 Ltr
ML18106A6421998-06-0101 June 1998
LER 98-010-00:on 931019,reactor Pressure Vessel Insp Plugs Were Out of Configuration,Was Noted.Caused by Personnel Error.Proper Configuration Was Restored Shortly After Discovery Prior to Entering Mode 2.W/980601 Ltr
ML18106A6431998-05-29029 May 1998
LER 98-006-01:on 980227,determined Incorrect Scaling Error of First Stage Pressure Transmitter Existed.Caused by Human Error.Revised Setpoint Calculation SC-MS002-01 & Revised Associated Instrument Calibr Database info.W/980529 Ltr
ML18106A6141998-05-18018 May 1998
LER 98-008-00:on 970814,failure to Test 21 & 22 AF 40 Valves in Closed Direction as Required by TS 4.0.5 Was Noted.Caused by Inadequate Design Mod Process.Motor Driven 21/22 AF 40 Valves Were Tested IAW Revised procedure.W/980518 Ltr
ML18106A5901998-05-0101 May 1998
LER 98-009-00:on 980405,epoxy Missing from Terminals of H Analyzer Was Noted.Caused by Inadequate Development of Procedure.H Analyzers Were Repaired & Review of Other Safety Related Equipment in Containment Was performed.W/980501 Ltr
ML18106A5611998-04-20020 April 1998
LER 98-008-00:on 980323,inadequate Testing of Salem Unit 1 Containment Air Locks Resulted in Entering TS 3.0.3.Caused by less-than-adequate Work Practices During Replacement of Equalizing Valve.Salem Unit 2 Airlocks Were Inspected
ML18106A6061998-04-0101 April 1998
Corrected LER 98-004-00:on 980302,failure to Comply W/Tss 4.11.1.1.2 & 3.3.3.8 Was Noted.Caused by Organizational Deficiency.Steps Have Been Taken to Correctly Document Safety Factors.Corrects Prior Similar Occurrences
ML18106A4451998-04-0101 April 1998
LER 98-004-00:on 980302,failure to Perform TS 4.11.1.1.2 & 3.3.3.8 Was Noted.Caused by Organizational Deficiency.Steps Were Taken to Correctly Document Safety factors.W/980401 Ltr
ML18106A4351998-03-30030 March 1998
LER 98-006-00:on 980227,incorrect Scaling of First Stage Turbine Impulse Pressure Transmitters Noted.Cause Indeterminate.Implemented Procedure Changes & re-scaled Affected Turbine Impulse Pressure transmitters.W/980330 Ltr
ML18106A3961998-03-20020 March 1998
LER 98-005-00:on 980219,inoperability of Twelve EDG Fuel Oil Transfer Pump (FOTP) Noted.Caused by Installation of Incorrect Control Switch.Installed Correct off-auto-manual Switch & Verified Operability of Twelve FOTP.W/980320 Ltr
ML18106A5781998-03-20020 March 1998
Corrected LER 98-005-00:on 980219,inoperability of 12 Fuel Oil Transfer Pump (Fotp),Noted.Caused by Installation of Incorrect Control Switch.Field Insp Performed to Verify Configuration of Switches for 11,21 & 22 FOTPs
ML18106A4021998-03-20020 March 1998
LER 98-007-00:on 980218,failure to Establish Containment Integrity (Closure) Prior to Fuel Movement Was Noted.Caused by Failure to Identify & Include Condensate Pot Vent in Appropriate Valve Lineup.Valves identified.W/980320 Ltr
ML18106A4031998-03-20020 March 1998
LER 98-006-00:on 980221,ESF Actuation of 11 & 12 Auxiliary Feedwater Pumps Occurred.Caused by Human Error.Operators Promptly Established Feedwater to All SG & Restored Proper Water levels.W/980320 Ltr
1999-08-26
[Table view]
Category:TEXT-SAFETY REPORT
MONTHYEARML20217A9931999-09-30030 September 1999
NRC Regulatory Assessment & Oversight Pilot Program, Performance Indicator Data
ML18107A5581999-09-30030 September 1999
Monthly Operating Rept for Sept 1999 for Salem,Unit 2.With 991014 Ltr
ML18107A5571999-09-30030 September 1999
Monthly Operating Rept for Sept 1999 for Salem,Unit 1.With 991014 Ltr
ML18107A5301999-08-31031 August 1999
Monthly Operating Rept for Aug 1999 for Salem,Unit 2.With 990913 Ltr
ML18107A5311999-08-31031 August 1999
Monthly Operating Rept for Aug 1999 for Salem,Unit 1.With 990913
ML18107A5031999-08-26026 August 1999
LER 99-006-00:on 990729,determined That SG Blowdown RMs Setpoint Was non-conservative.Caused by Inadequate ACs for Incorporating Original Plant Licensing Data Into Plant Procedures.Blowdown Will Be Restricted.With 990826 Ltr
ML18107A5201999-08-12012 August 1999
Rev 0 to Sgs Unit 2 ISI RFO Exam Results (S2RFO#9) Second Interval,Second Period, First Outage (96RF).
ML18107A4811999-07-31031 July 1999
Monthly Operating Rept for July 1999 for Salem,Unit 1.With 990813 Ltr
ML18107A4821999-07-31031 July 1999
Monthly Operating Rept for July 1999 for Salem,Unit 2.With 990813 Ltr
ML18107A4691999-07-28028 July 1999
LER 99-008-00:on 990714,determined That Limit Switch Cables Were Subject to Multiple Hot Shorts in Same Fire Area.Caused by Inadequate Original Post Fire Safe Shutdown Analysis.All Limit Switch Cables for MOVs Were Reviewed.With 990728 Ltr
ML18107A4441999-07-0606 July 1999
LER 99-007-00:on 990605,surveillance for Quadrant Power Tilt Ratio (QPTR) Was Missed.Caused by Human Error.Qptr Calculation Was Performed & Personnel Involved Have Been Held Accountable IAW Pse&G Policies.With 990706 Ltr
ML18107A4211999-07-0202 July 1999
LER 99-005-00:on 990605,11 Containment Declared Inoperable. Caused by Valves 11SW72 & 11SW223 Both Leaking.Procedure S1.OP-ST.SW-0010(Q) Was Enhanced to Provide Specific Instructions to Ensure Proper Sequencing.With 990702 Ltr
ML18107A4331999-07-0101 July 1999
LER 99-002-01:on 990405,determined That 2SA118 Failed as Found Leakrate Test.Caused by Foreign Matl Found in 2SA118 valve.2SA118 Valve Was Cycled Several Times & Seat Area Was Air Blown in Order to Displace Foreign Matl.With 990701 Ltr
ML18107A4321999-07-0101 July 1999
LER 99-006-01:on 990501,determined That There Was No Flow in One of Four Injection Legs.Caused by Sticking of Valve in Safety Injection Discharge Line to 21 Cold Leg.Valve Was Cut Out of Sys & Replaced.With 990701 Ltr
ML18107A5211999-07-0101 July 1999
Rev 0 to Sgs Unit 2 ISI RFO Exam Results (S2RFO#10) Second Interval,Second Period,Second Outage (99RF).
ML18107A4351999-06-30030 June 1999
Monthly Operating Rept for June 1999 for Salem,Unit 1.With 990713 Ltr
ML18107A4341999-06-30030 June 1999
Monthly Operating Rept for June 1999 for Salem,Unit 2.With 990713 Ltr
ML20196H8621999-06-30030 June 1999
NRC Regulatory Assessment & Oversight Pilot Program, Performance Indicator Data, June 1999 Rept
ML18107A3951999-06-17017 June 1999
LER 99-004-00:on 990520,reactor Tripped from 100% Power,Due to Negative Flux Trip Signal from Nuclear Instrumentation. Cause Has Not Been Determined.Discoloration Was Identified on One of Penetrations.With 990617 Ltr
ML18107A3661999-06-0909 June 1999
LER 99-003-00:on 990513,unplanned Entry Into TS 3.0.3 Was Made.Caused by Human error.Re-positioned Creacs Supply Fan Selector Switches & Revised Procedures S1 & S2.OP-ST.SSP-0001(Q).With 990609 Ltr
ML18107A3551999-06-0202 June 1999
LER 99-005-00:on 990504,failure to Meet TS Action Statement Requirements for High Oxygen Concentration in Waste Gas Holdup Sys Occurred.Caused by Inability of Operators. Existing Procedures Will Be Evaluated.With 990602 Ltr
ML18107A3441999-06-0101 June 1999
Interim Part 21 Rept Re Premature Over Voltage Protection Actuation in Circuit Specific Application in Dc Power Supply.Testing & Evaluation Activities Will Be Completed on 990716
ML18107A3541999-06-0101 June 1999
LER 99-006-00:on 990501,HHSI Flow Balance Discrepancy Was Noted During Surveillance.Caused by Sticking of Check Valve in SI Discharge Line to 21 Cold Leg.Valve 21SJ17,was Cut Out of Sys & Replaced.With 990601 Ltr
ML18107A3681999-05-31031 May 1999
Monthly Operating Rept for May 1999 for Salem Generating Station,Unit 1.With 990611 Ltr
ML18107A3721999-05-31031 May 1999
Monthly Operating Rept for May 1999 for Salem Generating Station,Unit 2.With 990611 Ltr
ML18107A2931999-05-12012 May 1999
LER 99-002-00:on 990413,determined That Number 12 Auxiliary Bldg Exhaust Fan Was Rotating Backwards.Caused by mis-wiring of Motor Due to Human Error by Maint technician.Mis-wiring Was Corrected & Fan Was Returned to Svc.With 990512 Ltr
ML18107A2781999-05-10010 May 1999
LER 99-004-00:on 990411,automatic Actuation of ESF Occurred During Reactor Vessel Head Removal in Support of Refueling Operations.Caused by High Radiation Condition.Containment Atmosphere Was Monitored.With 990505 Ltr
ML18107A2791999-05-0404 May 1999
LER 99-003-00:on 990406,all Salem Unit 2 Chillers Rendered Inoperable.Caused by Human Error.Lessons Learned from Event Were Communicated to All Operators by Including Them in Night Orders.With 990504 Ltr
ML18107A2741999-05-0303 May 1999
LER 99-002-00:on 990405,determined That Containment Isolation Valve Failed as Found Leakrate Test.Caused by Foreign Matl Blocking Valves from Closing.Check Valve Mechanically Agitated.With 990504 Ltr
ML18107A3711999-04-30030 April 1999
Corrected Monthly Operating Rept for Apr 1999 for Salem Generating Station,Unit 1
ML18107A3151999-04-30030 April 1999
Submittal-Only Screening Review of Salem Generating Station Individual Plant Exam for External Events (Seismic Portion), Rev 1
ML18107A2991999-04-30030 April 1999
Monthly Operating Rept for Apr 1999 for Salem Unit 1.With 990514 Ltr
ML18107A2971999-04-30030 April 1999
Monthly Operating Rept for Apr 1999 for Salem Unit 2.With 990514 Ltr
ML18107A2351999-04-23023 April 1999
LER 99-001-00:on 990330,MSSV Failed Lift Set Test.Caused by Setpoint Variance Which Is Result of Aging.Valves Were Adjusted & Retested to Ensure TS Tolerance.With 990423 Ltr
ML18107A2881999-04-0707 April 1999
Rev 0 to NFS-0174, COLR for Salem Unit 2 Cycle 11.
ML18107A1821999-03-31031 March 1999
Monthly Operating Rept for Mar 1999 for Salem,Unit 1.With 990414 Ltr
ML18107A1831999-03-31031 March 1999
Monthly Operating Rept for Mar 1999 for Salem,Unit 2.With 990414 Ltr
ML18106B1471999-03-29029 March 1999
LER 99-001-00:on 990228,reactor Scram Was Noted as Result of Turbine Trip.Caused by Operator Error.Lesson Plans Revised to Explicitly Demonstrate Manner in Which Valve Functions. with 990329 Ltr
ML18106B1021999-02-28028 February 1999
Monthly Operating Rept for Feb 1999 for Salem Unit 2.With 990315 Ltr
ML18106B1011999-02-28028 February 1999
Monthly Operating Rept for Feb 1999 for Salem Unit 1.With 990315 Ltr
ML18106B0931999-02-25025 February 1999
Part 21 Rept Re Possible Defect in Swagelok Pipe Fitting Tee,Part Number SS-6-T.Caused by Crack Due to Improper Location of Heated Bar.Only One Part Out of 7396 Pieces in Forging Lot Was Found to Be Cracked.Affected Util,Notified
ML18106B0701999-02-16016 February 1999
LER 98-015-00:on 981208,inadvertent Discharge Through RHR Relief Valve During Startup Was Noted.Caused by Operator Performing Too Many Tasks Simultaneously.Appropriate Actions Have Been Taken IAW Policies & Procedures.With 990216 Ltr
ML18106B0551999-02-0101 February 1999
Part 21 Rept Re Possible Matl Defect in Swagelok Pipe Fitting Tee,Part Number SS-6-T.Defect Is Crack in Center of Forging.Analysis of Part Is Continuing & Further Details Will Be Provided IAW Ncr Timetables.Drawing of Part,Encl
ML18106B0561999-01-31031 January 1999
Monthly Operating Rept for Jan 1999 for Salem Generating Station,Unit 2.With 990212 Ltr
ML18106B0571999-01-31031 January 1999
Monthly Operating Rept for Jan 1999 for Salem Generating Station,Unit 1.With 990212 Ltr
ML20205P1671999-01-31031 January 1999
a POST-PLUME Phase, Federal Participation Exercise
ML18106B0441999-01-29029 January 1999
Part 21 Rept Re Possible Defect in Swagelok Pipe Fitting Tee Part Number SS-6-T.Caused by Crack in Center of Forging. Continuing Analysis of Part & Will Provide Details in Acoordance with NRC Timetables
ML18106B0491999-01-28028 January 1999
LER 98-007-01:on 980730,reactor Coolant Instrument Line through-wall Leak Was Noted.Caused by Transgranular Stress Corrosion Cracking.Replaced Affected Tubing.With 990128 Ltr
ML18106B0401999-01-18018 January 1999
LER 98-016-00:on 981219,ECCS Leakage Was Outside of Design Value.Caused by Leakage Past Seat of 21RH34 Manual Drain. Valve 21RH34 Was Reseated.With 990118 Ltr
ML18106B0251998-12-31031 December 1998
Monthly Operating Rept for Dec 1998 for Salem Unit 2.With 990115 Ltr
1999-09-30
[Table view] |
Text
Public Service Electric and Gas Company P.O. Box 236 Hancocks Bridge, New Jersey 08038 Salem Generating Station April 22, 1993 U. s. Nuclear Regulatory Commission .
Document control Desk Washington, DC 20555
Dear sir:
SALEM GENERATING STATION LICENSE NO. DPR-75 DOCKET NO. 50-311 UNIT NO. 2 SUPPLEMENTAL LICENSEE EVENT REPORT 92-015-01 This supplemental Licensee Event Report is being submitted pursuant to Code of Federal Regulations 10CFR50.73. The Apparent Cause of Occurrence and Corre~tive Action sections have been modified based upon completed investigations.
Sincerely yours, C. A. Vondra General Manager -
Salem Operations MJP:pc Distribution Tl,,, *v~m* ic in u3~l~Q 48 9305030237 930422
~DR ADOCK 05000272 95*2189 REV 7-92 PDR
- NRC FORM 366 U.S. NUCLEAR REGULATORY COMMISSION 16-89) APPROVED OMB NO. 3150-0104 EXPIRES: 4/30/92 ESTIMATED BURDEN PEA RESPONSE TO COMPLY WTH THIS INFORMATION COLLECTION REQUEST: 50.0 HAS. FORWARD LICENSEE EVENT REPORT (LERI COMMENTS REGARDING BURDEN ESTIMATE TO THE RECORDS AND REPORTS MANAGEMENT BRANCH (P-530), U.S. NUCLEAR REGULATORY COMMISSION, WASHINGTON, DC 20555, AND TO THE PAPERWORK REDUCTION PROJECT 13150-0104). OFFICE OF MANAGEMENT AND BUDGET, WASHINGTON, DC 20503.
l FACILITY .NAME 111 OOCKET NUMBER (2)
Salem Generating Station - Unit 2 o *15 I o Io I o I 31 111 TITLE (41 Engineered Safetv Feature: Containment Isolation Valve Failed Closed.
EVENT DATE 151 LER NUMBER.161 REPORT DATE (7) OTHER FACILITIES INVOLVED (81 MONTH DAY YEAR YEAR 1::::::::: SEQUENTIAL t:::::::::: REVISION MONTH . DAY YEAR FACI ~11:v NAMES OOCKET NU.MBEAISI 1:::::::::: NUMBER ~:;::::::::NUMBER Salem Unit.l o I 5 Io I o I o I 2 17 I 2 ol s 3 I 1 9 2 I 9 2 - oI1 b - ol 1 oI 4 2 I2 913 OPERATING THIS REPORT IS SUBMITTED PURSUANT TO THE R~QUIREMENTS OF 10 CFR §: (Check one or more of tho following) (11)
MODE (9) 1 20.402(bl
~
20.405(c)
.._ . 60.73(1)(2)(ivl 1--
73.71(b)
POWER LEVEL
,_ 20.406(1)(1 )(i)
._... 60.311(c)(1)
~
50.7311H21M ,___ 73.71(c).
'{
(10)
1 0 0
{<;:;::::;:::: :=:-:-:=:*:= .*:*
20.405(1)(1 )(ii) 20.406(1)(1)(iiil 50.38(c)(2) 60.73(1)(2Hil -- 50.7311H2Hvii) 60.73(11(2)(Yiii)(A) f---
OTHER (S1>ocify in Absrract bolow and in Toxt. NRC Form 366AI
.,. ..........:*:-:-: ,.......... 20.406(1)(1 )(ly)
~
150.73(1)(2)(iil
._... 50.73(11(2)(viiil(BI
""""""* ... """ 20,406(1)(1 IM 60.73(1)(2)(iii) 50.73(1)(2)(x)
LICENSEE CONTACT FOR THIS LER (12)
NAME TELEPHONE NUMBER AREA CODE M J. Pollack - LER Coordinator 6 I 0 I 9 3 13 I 9 1- 12 I 0 12 I 2 COMPLETE ONE LINE FOR EACH COM~ONENT FAILURE DESCRIBED IN THIS REPORT (131 MANUFAC-* REPORTABLE'::::::::;:,.;:;:;:::::::::::::::r>>>? MANUFAC*
CAUSE SYSTEM COMPONENT CAUSE SYSTEM COMPONENT TUR ER TO NPRDS ::::::::::::::::::::::::::::::: :*:*:*:*:*:-:*:* TUR ER I I I I I I I !*1..*:1:1:::::::::i*:::l*::*:'l*.**:1.:*1.:::.*::1:1 I I I I I I I I I I I I I I I I .I I I I l SUPPLEMENTAL REPORT EXPECTED (14) MONTH DAY YEAR EXPECTED
~NO SUBMISSION l YES (If .yes, com1>fete EXPECTED SUBMISSION DATE!
DATE .1151 I I I ABSTRACT (limit to 1400 spacfls, i.t1., approximotely fifteen single-space typ~writton lines} (16)
On 8/31/92, during normal power operation, the 2A Control Air Header inlet air operated globe valve (21CA330) failed closed. At the time of the event, Solid State Protection System (SSPS) Train A slave relay testing was in progress. The 21CA330 valve is a Masoneillan International air operated globe valve (model number 38-20561). The 21CA330 valve is a Containment Isolation Valve. The root cause of this event is the "Design, Manufacturing, Construction/Installation" of the SSPS circuit. When Test switch 612 was placed in the operate output position, during SSPS Train A slave relay*continuity check, the 21CA330 valve closed. Investigation revealed that during testing, the test voltage is significant enough to cause solenoid valve pick-up resulting in CA330 valve closure. In.March 1992, the Unit 2 CA330 solenoid valves were replaced with equivalent components (ASCO Model NP8342B23E replaced with ASCO Model NPK8342B23E). CA330 valve inadvertent closure was not expected since the valves were equivalent. Testing has shown that the same solenoid valves can have as much as a 30 volt difference in pick-up. A design change is being implemented during the current Unit 2 refueling outage. It adds a test circuit potentiometer to reduce the voltage seen by the CA33'0 solenoid valve during slave relay testing and the solenoid valve model is being replaced with the model used in Unit
- 1. Also, the slave relay circuit continuity test light bulb is being replaced (both Salem Units) with a higher resistance bulb, further reducing the voltage seen by the CA330 solenoid valve.
NRC Form 366 (6-89)
LICENSEE EVENT REPORT (LER) TEXT CONTINUATION Salem Generating Station DOCKET NUMBER. LER NUMBER PAGE Unit 2 5000311 92-015-01 2 of 4 PLANT AND SYSTEM IDENTIFICATION:
Westinghouse - Pressurized Water Reactor Energy Industry Identification System (EIIS) codes are identified in the text as {xx}
IDENTIFICATION OF OCCURRENCE:
Engineered Safety Feature: Containment Isolation Valve Failed Close Event Date: 8/31/92 Report Date: 4/22/93 This report is a supplement to LER 311/92-015-00 whi'.ch was initiated by Incident Report l'Jo.92-553. The Apparent Cause of Occurrence section has been revised to address the results of subsequent investigation (committed to in the original LER).
CONDITIONS PRIOR TO OCCURRENCE:
Mode 1 Reactor Power 100% - Unit Load 1130 MWe DESCRIPTION OF OCCURRENCE:
On August 31, 1992, at 0345 hours0.00399 days <br />0.0958 hours <br />5.704365e-4 weeks <br />1.312725e-4 months <br />, during normal power operation, the*
2A Control Air Header inlet air operated globe valve (21CA330) failed closed. At the time of the event, Solid State Protection System (SSPS) {JC} Train A slave relay testing was in progress.
The 21CA330 valve is a Masoneillan International air operated globe valve (model number 38-20561). .It takes air to open and is spring loaded to fail close.
The 21CA330 valve is a Containment Isolation Valve {JM}. Containment isolation is an Engineered Safety Feature (ESF). Therefore, on August 31, 1992, at 0436 hours0.00505 days <br />0.121 hours <br />7.208995e-4 weeks <br />1.65898e-4 months <br />, the Nuclear Regulatory Commission (NRC) was notified of the valve closure, in accordance with Code of Federal Regulations 10CFR 50.72(b)(i) (ii).
APPARENT CAUSE OF OCCURRENCE:
The root cause of this event is "Design Manufacturing, Construction/
Installation" 6f the SSPS circuit.
As stated above, SSPS Train A slave relay testing was iri progress.
When Test Switch 612 was placed in the operate output position the 21CA330 .valve closed. The slave relay testing involved a continuity check of the CA330 solenoid valve circuit using low current circuit input. Investigation revealed that the test voltage is sufficient to cause solenoid valve pick-~p resulting in CA330 valve closure. This
LICENSEE EVENT REPORT (LER) TEXT CONTINUATION Salem Generating Station DOCKET NUMBER LER NUMBER PAGE Unit 2 5000311 92-015-01 3 of 4 APPARENT CAUSE OF OCCURRENCE: (cont'd}
was reproducible.
In March 1992, the Unit 2 CA330 solenoid valves were replaced with equivalent components (ASCO Model NP8342B23E replaced_with ASCO Model NPK8342B23E). CA330 valve inadvertent closure, during SSPS slave relay testing, was not expected since the.valves were equivalent.
Prior to this component replacement, Unit 2 CA330 valves had not experienced inadvertent.closure during SSPS slave relay testing~ The difference between the two ASCO models is that the older model uses leaded terminal connectors and the newer model uses screwed terminal connectors. Investigation revealed that this replacement was not a direct contributing factor to CA330 valve inadvertent closure.
Subsequent testing has shown that the same solenoid valves can have as much as a 30 volt difference in pick-up.
ANALYSIS OF OCCURRENCE:
Though the 21CA330 valve is the Control Air Header 2A inlet valve, it also functions as a containment isolation valve. The operability of the containment isolation valves ensures that the containment atmosphere will be isolated from the outside environment in the event of a release of radioactive material to the containment atmosphere or pressurization of the containment.
In this event, the 21CA330 valve failed to the safe configuration, as per design. Therefore, there was no affect on the health or safety of the public. However, since containment isolation is an ESF function, the 21CA330 valve inadvertent closure is reportable in accordance with Code of Federal Regulations 10CFR 50.73(a) (2) (iv).
In 1986, the Salem Unit 1 CA330 valves failed closed during SSPS testing. The Unit 1 CA330 solenoid valves had been replaced_ with a model of lower wattage (not an equivalent replacement).* Following that installation a series of inadvertent valve closures occurred. A design change, to add test circuit potentiometers, was completed eliminating Unit 1 CA330 valve inadvertent closures (until recently). In 1986, test circuit potentiometer installation was considered for Unit 2; however, it was determined to* not be warranted since its solenoid valves were different from Unit l's (and had not been replaced) .
Recently, Unit 1 CA330 valves have experienced inadvertent closure during SSPS slave relay testing. This is aiso attributed to design of the SSPS circuit.
On June 19, 1989 (reference LER 272/89-027-00), a similar event occurred. In that event, a main steam isolation valve (MSIV) failed closed during SSPS surveillance testing.* The MSIV closure resulted in a reactor trip. The cause of that event was attributed to the continuity check circuit design.
LICENSEE EVENT REPORT (LER) TEXT CONTINUATION Salem Generating Station DOCKET NUMBER LER NUMBER PAGE.
Unit 2 ~5000311 92-015-01 4 of 4 CORRECTIVE ACTION:
A design change is being implemented during the current Unit 2 refueling outage. It adds a test circuit potentiometer (similar to Unit l's design) to reduce the voltage seen by the CA330 solenoid valve during slave relay testing and the solenoid valve model is being replaced with the model used in Unit 1.
The slave relay circuit continuity test light bulb is being replaced (both Salem Units) with a higher resistance bulb, further reducing the voltage seen by the CA330 solenoid va we.
General Manager -
Salem Operations MJP:pc SORC Mtg.93-036
