How to used an automatic method for the execution of a Failure Mode, Effects and Criticality Analysis (F.M.E.C.A). The F.M.E.C.A is carried out based on the F.M.E.A approach reported by Bull, Stecki, Edge and Burrows [1] in 1997 and by Stecki [2] in 1998 combined with a Markov analysis in order to obtained complete F.M.E.C.A. Linear Graph Theory, is introduced in order to achieve an automated assembly of the governing differential equations needed for the Markov analysis.

1. F.M.E.C.A What is it ?
Failure Mode
Effect Analysis
Criticality Analysis
What effectdoes
the failure have ?
Probabilityof
the failure
Possible Failures F.M.E.C.A
F.M.E.C.A
F.M.E.C.A

2. F.M.E.C.A What is it ?

3. Independent Economies
Design
Costs
applying
F.M.E.C.A
Savings
applying
F.M.E.C.A
<
Operation
Costs
applying
F.M.E.C.A
Savings
applying
F.M.E.C.A
<

4. Technical Barrier
Design
Oriented
Disciplines
Operation
Oriented
Disciplines

5. Technical Barrier
Design
Oriented
Disciplines
Operation
Oriented
Disciplines

6. F.M.E.C.A Analysis

7. Linear Graph
Theory
Bond Graph
Theory
Failure
Modes
Effect of
Failure
Reliability of
Components
Criticality
Bull et. Al.1997
Markov Analysis
Hydraulic
Circuit
F.M.E.C.A
F.M.E.C.A Process

9. Dynamic Bond-Graph

10. Qualitative Bond-Graph

11. Qualitative Bond-Graph

12. Markov Process/State Diagram
State 1 Component works
State 0 Component failed

13. Reliability

14. Item.no Function Failure mode Local effect System effect Reliability * MTTF (h)
HW09 Ensuring that the motor
is filled with oil
under operation
P35 Bar
Valves does not closed Los of system pressure. Drop of load.
Brake will go on when P35Bar
5*10-5 20000
Valves does not open High system pressure.WH07
will open when
P4180Bar
Lowering stopped.
The load will rest on valve
WH09
5*10-5 20000
HW41 Guard for brake system
when winch is
operating in
“brake off”
mode.
Valve does not open Brake guard system will not
function.
The winch will continue
lowering in “normal”
mode.
7.9*10-5 12660
Valve does not closed No effect in lowering “brake
off” mode.
No effect.
Its normally open in this mode.
7.9*10-5 12660
WH01 Transfer drive torque
to winch drum.
Internal leakage The torque will be reduced. The speed and torque of the
drum will go down.
When PLeakage5P3
Brake will go on.
Lowering stooped.
9.3*10-5 10753
*Possibility for that one of the valves in the system will failure, and the rest will function.

15. Multi level Analysis

16. Hierarchy of Faults

17. New Innovative Technology
Properties
DATABASE
SAP or any other
database oriented
system
SAP or any other
database oriented
system
Simple
Calculations
Properties
DATABASE
SAP or any other
database oriented
system
SAP or any other
database oriented
system
Simple
Calculations
E
Q
U
I
P
M
E
N
T
MAIN
COMPONE
NT
SUB
COMPONE
NT
GENERA
L
FAILURE
MODES
SPECIFI
C
FAILURE
MODES
REPOR
T
- Oreda structure
on each box
E
Q
U
I
P
M
E
N
T
MAIN
COMPONE
NT
SUB
COMPONE
NT
GENERA
L
FAILURE
MODES
SPECIFI
C
FAILURE
MODES
REPOR
T
E
Q
U
I
P
M
E
N
T
MAIN
COMPONE
NT
SUB
COMPONE
NT
GENERA
L
FAILURE
MODES
SPECIFI
C
FAILURE
MODES
REPOR
T
- Oreda structure
on each box
Report on Faults
A simple tick box
on the appropriate
level is all it takes
BT
Bt
T
I
Ht
H
GL
t
GL Kt
K
(YL)1/p
ZT(..)p
qR qL QNQT
Q
PT
q
pR pL
qT QT
QT
qL
PT
pL
pL
p P
PN
PL
I
HL
I
I
KT
VT
V t
TFL
F t
L
Properties
Connections
The Technical FoundationThe Technical Foundation
BT
Bt
T
I
Ht
H
GL
t
GL Kt
K
(YL)1/p
ZT(..)p
qR qL QNQT
Q
PT
q
pR pL
qT QT
QT
qL
PT
pL
pL
p P
PN
PL
I
HL
I
I
KT
VT
V t
TFL
F t
L
Properties
Connections
The Technical FoundationThe Technical Foundation
A Simple overlay on the existing data

18. New Innovative Technology
Properties
DATABASE
SAP or any other
database oriented
system
SAP or any other
database oriented
system
Simple
Calculations
Properties
DATABASE
SAP or any other
database oriented
system
SAP or any other
database oriented
system
Simple
Calculations
E
Q
U
I
P
M
E
N
T
MAIN
COMPONE
NT
SUB
COMPONE
NT
GENERA
L
FAILURE
MODES
SPECIFI
C
FAILURE
MODES
REPOR
T
- Oreda structure
on each box
E
Q
U
I
P
M
E
N
T
MAIN
COMPONE
NT
SUB
COMPONE
NT
GENERA
L
FAILURE
MODES
SPECIFI
C
FAILURE
MODES
REPOR
T
E
Q
U
I
P
M
E
N
T
MAIN
COMPONE
NT
SUB
COMPONE
NT
GENERA
L
FAILURE
MODES
SPECIFI
C
FAILURE
MODES
REPOR
T
- Oreda structure
on each box
Report on Faults
A simple tick box
on the appropriate
level is all it takes
A Simple overlay on the existing data
Technical
Description
Faults
&
Effects
Component
Selection based
“criticality”
Sensor
Selection
Sensor Reading
Condition
Monitoring
Diagnostics
Select locally
the
adequate
m
aintenance
schem
e
•B
reak
dow
n
m
aintenance
•Sequential m
aintenance
•Preventive
m
aintenance
•C
ondition
based
m
aintenance

19. New Innovative Technology
State 1 Component
works
State 0 Component
failed
107539.3*10-5The speed and torque of the
drum will go down.
When PLeakage5P3
Brake will go on.
Lowering stooped.
The torque will be reduced.Internal leakageTransfer drive torque
to winch drum.
WH01
126607.9*10-5No effect.
Its normally open in this mode.
No effect in lowering “brake
off” mode.
Valve does not closed
126607.9*10-5The winch will continue
lowering in “normal”
mode.
Brake guard system will not
function.
Valve does not openGuard for brake system
when winch is
operating in
“brake off”
mode.
HW41
200005*10-5Lowering stopped.
The load will rest on valve
WH09
High system pressure.WH07
will open when
P4180Bar
Valves does not open
200005*10-5Drop of load.
Brake will go on when P35Bar
Los of system pressure.Valves does not closedEnsuring that the motor
is filled with oil
under operation
P35 Bar
HW09
MTTF (h)Reliability *System effectLocal effectFailure modeFunctionItem.no
107539.3*10-5The speed and torque of the
drum will go down.
When PLeakage5P3
Brake will go on.
Lowering stooped.
The torque will be reduced.Internal leakageTransfer drive torque
to winch drum.
WH01
126607.9*10-5No effect.
Its normally open in this mode.
No effect in lowering “brake
off” mode.
Valve does not closed
126607.9*10-5The winch will continue
lowering in “normal”
mode.
Brake guard system will not
function.
Valve does not openGuard for brake system
when winch is
operating in
“brake off”
mode.
HW41
200005*10-5Lowering stopped.
The load will rest on valve
WH09
High system pressure.WH07
will open when
P4180Bar
Valves does not open
200005*10-5Drop of load.
Brake will go on when P35Bar
Los of system pressure.Valves does not closedEnsuring that the motor
is filled with oil
under operation
P35 Bar
HW09
MTTF (h)Reliability *System effectLocal effectFailure modeFunctionItem.no
Fault effects
The system gets
better and better
Focus where it matters for
safety, functionality and
economy

20. New Innovative
Technology
Applied to the control
and hydraulic systems
of an AS 332 Super
Puma helicopter
In cooperation with:
M
1
9
Qf1
Qrv
Qcv2
Qf2Qfbp
Qcv1
Qdv
Qp
Qacc
wp
Qp
prv
pp
pf pacc ptl
ptlr
prl
Tp
QTSC
QMSC
pres
2
3 4
5 12 6 7
8
10
11
ps

21. New Innovative Technology
Applied to an autonomous
underwater vehicle in
cooperation with;
FieldCare AS

22. New Innovative Technology
Applied to an offshore Manrider winch
In cooperation with;

23. New Innovative Technology
Applied to a Lower Ricer Package
In cooperation with;

24. Manrider winch
AS 332 Super Puma
Lower Ricer Package
Autonomous
Underwater Vehicle