34 th Annual EPRI Steam Generator Workshop 1 Zetec Inc All rights reserved July 2022 2015 Portland OR Tom Bipes Zetec What are my inspection concerns today Manpower Complacency ID: 328136
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Utilizing Advanced Eddy Current Analysis Tools
34th Annual EPRI Steam Generator Workshop
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© Zetec Inc. All rights reserved
July 20-22, 2015 – Portland, ORTom Bipes – ZetecSlide2
What are my inspection concerns today?Manpower?
Complacency?Unknown new flaw mechanisms?Flaw growth/change I cannot detect?Is it OK to not use technology that is available today that answers these questions?
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PerspectiveSlide3
Old Tools – data lookups
Historic PerspectiveNeed to compare actual history dataLook up tubes manuallyData Segment RecallWhat is change?EPRI Guidelines on change
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Advanced Tools
Recent AdvancesTechnology changes constantlyMedia – entire history on one deviceComputers and networkingSoftware capabilitiesAutomated Analysis with RevospECT
®Historic Data Compare HDC®
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Manual Data Reviews
Without HDC® Manual process for retrieving data
Time consumingData setup parameters differ
Interpretation of change subjective
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Without
HDC® 6
History
Current
Baseline
Manual Data ReviewsSlide7
With
HDC® Automated process for retrieving dataEfficient processData setup parameters unified
Interpretation of change decisiveDelta Channel shows unique difference when change occurs
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Manual Data ReviewsSlide8
With
HDC® 8
Baseline
History
Current
Manual Data ReviewsSlide9
Automated Data Comparison
With RevospECT™Compare current with two history datasetsHistoric data interpolationDelta Channel DifferenceUnique
Used as Detector Channel(s)Independent or Leveraged ResultsDefense in Depth – Highly Sensitive to new or immerging conditions over time.
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Examples
Absolute channel compare for deposit loading on hot leg
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st
ISI after replacement
14 years later
17 yearsSlide11
Absolute LF channel compare for Sludge
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st
ISI after replacement
14 years later
17 years (after aggressive sludge lancing performed)
ExamplesSlide12
Examples
Baseline
False indication of buff mark or tube wearSlide13
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Field Indication Reported by HDC – Confirmed by X-Probe
Baseline
Current
History
Delta Change – Current to History
ExamplesSlide14
Displayed with previous/current setup
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Previous Inspection
Current Inspection
Examples
Change?Slide15
Seabrook OE - NQI @ 01H+ (Years-1997;2009;2012)
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Baseline
DeltaHistory/Current
History Delta
Baseline/Current
ExamplesSlide16
Utilization
PID (Positive Identification)Typically performed prior to tube repairTrue Signal Change ReviewActive/Masked Degradation
Sludge/Deposit growthBenign indication stabilityUnique Detector for Auto AnalysisSignal Characteristics Change
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Utilization per specific site designResolution/Review Process
Automated AnalysisSeparate Results from RevospECT analyzersIntegrate with RevospECT resultsLeverage with bobbin and X-Probe resultsReduce manual reviewsEliminate subjectivity
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ImplementationSlide18
Utilized in various production modesResolution Process (Auto/Manual)
Review Process (Single Pass)Independent Review (IQDA)Ensures determination of signal changeReports change regardless of specific reporting criteria (ETSS)
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Implementation Today!Slide19
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