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IIIG LTMS V2 Review. LTMS V2 Review Data Summary: – Includes 285 Chartable reference oil results from all test laboratories – Most recent chartable reference.

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Presentation on theme: "IIIG LTMS V2 Review. LTMS V2 Review Data Summary: – Includes 285 Chartable reference oil results from all test laboratories – Most recent chartable reference."— Presentation transcript:

1 IIIG LTMS V2 Review

2 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”

3 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 Level Level 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

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

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

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

7 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).

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

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

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

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

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

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

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

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

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

17 Appendix LTMS V2 Charts By Test Lab

18 Lab A

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22 Lab B

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26 Lab D

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30 Lab E

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34 Lab F

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38 Lab G

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