Step 3: Calculate the partial duration of service, S
i
1.
Use T
i
and K
mi
in the following formula to calculate S
i
[hours]:
S
i
= X * K
mi
* T
i
2.
Select the value of X from the following table:
Record type
Value of X
Hour counter and log book
1.2
With log book
1.4
No hour counter, log book, or CMS
1.5
For example, if you use:
X = 1.2, K
mi
= 0.124 and T
i
=1440:
S
i
= 1.2 * 0.124 * 1440 = 214.272
Step 4: Calculate the actual duration of service, S
1.
Add together each of the S
i
partial duration of service values that are gathered from this
and previous inspection intervals since the start of the design working period.
2.
The earlier S values (S
1
…S
i
) can be read from the log book.
For example: S = S
1
+ S
2
+ ... + S
i
For example, if you use:
S
1
= 215.468, S
2
= 210.26, S3 (S
i
) = 214.272:
S = 215.468 + 210.26 + 214.272 = 640
Step 5: Calculate the DWP% and remaining service life
OWNER’S MANUAL
This document and the information contained herein, is the exclusive property of Verlinde S.A.S and represents a non-
public, confidential and proprietary trade secret that may not be reproduced, disclosed to third parties, altered or
otherwise employed in any manner whatsoever without the express written consent of Verlinde S.A.S. Copyright 2020
© Verlinde S.A.S. All rights reserved.
6/2020
