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SAN ONOFRE: FAR OUTSIDE THE NORM February 7, 2013 Dan Hirsch, - - PowerPoint PPT Presentation
SAN ONOFRE: FAR OUTSIDE THE NORM February 7, 2013 Dan Hirsch, - - PowerPoint PPT Presentation
SAN ONOFRE: FAR OUTSIDE THE NORM February 7, 2013 Dan Hirsch, Lecturer, UC Santa Cruz; President, Committee to Bridge the Gap Note: The views presented here are those of the author and do not necessarily represent those of UCSC or CBG.
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EDISON MA EDISON MAKES KES TW TWO C O CLAIMS LAIMS TO O SUP SUPPOR PORT T ITS R ITS REQUES EQUEST T FOR FOR REST RESTAR ARTING UN TING UNIT 2 IT 2.
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FIRST: “The wear in Unit 2 is far less extensive than the wear in Unit 3” and “Unit 3 had more than 300 tubes with the unexpected tube-to-tube wear; Unit 2 only had two tubes exhibiting minor tube-to-tube wear.”
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“The he na natur ture of e of the the supp suppor
- rt
t str structur ucture e wear is ear is not un not unusual usual in in new steam new steam gener generator tors s and and is is par part o t of the the equip equipment ment settling in.” Source: S. Cal. Edison Press Release, July 13, 2012 Second SCE Assertion:
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THE THE MEDIA MEDIAN N NU NUMBER MBER OF STEAM OF STEAM GENERA GENERATOR OR TUBES TUBES SHO SHOWING WING WEAR WEAR AFTER AFTER ON ONE E CY CYCLE CLE OF OF OPERA OPERATION TION NATION TIONALL ALLY Y IS IS— FOU FOUR. R.
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SAN SAN ON ONOFRE OFRE UN UNIT 2 IT 2 HAD HAD 1595 1595 D DAMA AMAGED GED TUBES, TUBES, APPR APPROXIMA XIMATEL TELY Y 400 TIMES THE 400 TIMES THE MEDIA MEDIAN. N. SAN SAN ON ONOFRE OFRE UN UNIT IT 3 3 HAD HAD 1806. 1806.
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THE THE MEDIA MEDIAN N NU NUMBER MBER OF WEAR OF WEAR INDICA INDICATIONS TIONS ON ON STEA STEAM M GEN GENERA ERATOR OR TUBES TUBES AFTER AFTER ON ONE E CY CYCLE CLE OF O OF OPERA PERATION TION IS IS— FOU FOUR. R.
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SA SAN N ONOFRE UN ONOFRE UNIT 2 HAD IT 2 HAD 4721, GR 4721, GREA EATE TER R THAN THAN A A THOU THOUSAND SAND TIMES TIMES MORE.
- MORE. SAN
SAN ONOFRE ONOFRE UNIT 3 HAD UNIT 3 HAD 10,284. 10,284.
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THE THE MEDIAN MEDIAN NU NUMBER MBER OF OF STEA STEAM M GENERA GENERATOR OR TUBES TUBES THA THAT T WERE WERE PL PLUG UGGED GED AFTER AFTER ON ONE CY E CYCLE CLE OF O OF OPERA PERATION TION IS IS— ZER ZERO. . SAN SAN ON ONOFRE OFRE UN UNIT 2 H IT 2 HAD AD 510; 510; UN UNIT 3 H IT 3 HAD AD 807 807.
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SCE’s CAL Response States:
“The actions to operate at reduced power and shut down for a mid-cycle inspection within 150 cumulative days of
- peration are interim
compensatory actions.
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“SCE will reevaluate these actions during the mid-cycle inspection based on the data
- btained during the
inspections.
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“In addition, SCE has established a project team to develop and implement a long term plan for repairing the SGs.” (emphasis added)
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