To activate quantitative analysis

1.	Press “Parameters” button and set Cut-Off parameters (see FTA chapter for parameters explanation).

2.	Press “Calculation” button on the MMEL dialog box.

RAM Commander will perform quantitative analysis according to selected algorithm. When calculation is finished, a “Detailed” report for the quantitative analysis will be displayed in a report window and in the grid in the lower MMEL screen part:

MMEL_DetailedReport

See report columns explanation in the MMEL Module Reports chapter.

3.	Manually select the Next/Second Worst Failure (if required).

When performing quantitative analysis, RAM Commander automatically selects Next/Second Worst Failure using Fussell-Vesely importance factor. In order to overwrite automatic selection, do the following:

1.	Select appropriate cell in the “Failure Details” Table (columns “Next Worst Failure” or “Second Worst Failure”).

2.	Press “Set Worst Failure” button – “Set Worst Failure” screen will be opened.

_img145

3.	In the “Set Worst Failure” screen select new Worst Failure and press OK. Cell with manually selected failure will be marked with grey background.

In order to return to the automatic selection: Select required cell and press “Reset” button.

To perform quantitative analysis for entire project select “Recalculate MMEL” from “Calculation” menu.