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Published byTamia Brisley Modified over 2 years ago

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IIIG LTMS V2 Review

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LTMS V2 Review Data Summary: – Includes 285 Chartable reference oil results from all test laboratories – Most recent chartable reference oil result included in data set is March 22, 2010 – Includes all ACLW data that is currently exhibiting a mild trend – WPD and PVIS defined as “Primary Parameters” – ACLW defined as “Secondary Parameters”

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LTMS V2 Review Proposed Limits for IIIG LTMS v2 example: – Limits for e i & z i : Shewhart Chart of Prediction Error e i = Y i – Z i-1 Limit TypeLimit* Level 3 2.066 Level 2 1.734 Level 1 1.351 EWMA of Standardized Test Result Z i = λ(Y i ) + (1 – λ)Z i-1 Limit TypeλLimit Level 2 Upper Limit0.2 TBD by SP Input Level 2 Lower Limit0.2 TBD by SP Input Level 10.20

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IIIG calibration attempt summary: – Of the 289 total, 73.3% acceptable, 17.3% failed acceptance, and 9.4% were invalid

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IIIG Alarm Summary (all labs & chartable results): – Below summarizes the unacceptable, reduced, and extended reference interval count for LTMS v1 & v2.

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IIIG Alarm Summary (all labs & chartable results): – Below summarizes the unacceptable, reduced, and extended reference interval percentage for LTMS v1 & v2.

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IIIG Alarm Summary (by lab): – Below summarizes the unacceptable, reduced, and extended reference interval count for LTMS v1 & v2 by test lab (285 Chartable test results).

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IIIG RMSE for the PVIS parameter: – RMSE calculation is a function of the average deviation from the target and within lab variation.

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IIIG Relative Pass limit of a Candidate test for the PVIS parameter:

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IIIG RMSE for the WPD parameter: – RMSE calculation is a function of the average deviation from the target and within lab variation.

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IIIG Relative Pass limit of a Candidate test for the WPD parameter (with a [GF-4] 3.5 limit):

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IIIG RMSE for the ACLW parameter: – RMSE calculation is a function of the average deviation from target and within lab variation.

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IIIG Relative Pass limit of a Candidate test for the ACLW parameter:

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Undue Influence example for TPVIS (e i ) data – Plot of e i data with no Undue Influence adjustment

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Undue Influence example for TPVIS (e i ) data – Circled results with “capped” adjustment (at +2.066 limit) Result adjusted if |Y i – Z i-1 | > 2.066 and |Y i – Y i+1 | > 2.066

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Undue Influence “Capped” Result Summary – (285 Total Chartable results)

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Appendix LTMS V2 Charts By Test Lab

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Lab A

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Lab B

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Lab D

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Lab E

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Lab F

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Lab G

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