Madas EVP/NC Manual Tecnico página 32

Parameter
Hardware Failure Tolerance - HFT
Common Cause Failure - CCF in points
Safe Failure Fraction - SFF in %
Expected Lifetime Cycles - B
Expected Lifetime - T [years]
10d
Probability of Dangerous Failures - PFH
Performance Level - PL
Safety Integity Level - SIL
Mean Time to Dangerous Failure - MTTF
Designed operating cycles (According to EN 161)
from 100.000 to 200.000 depends on diameter
EVP - EVPC.../NC
Tabella 3 - Table 3 - Tableau 3 - Tabla 3
10d
[1/h]
D
[years]
D
DESIGNED LIFETIME
SIL LEVEL
32
Madas Technical Manual - REV. 0 of 10
Value
0
75
65%
251278
87
1.33E-07
d
2
860
Time (years)
10
May 2018
th