f.m.e.c.a what is it - grahl-madsen.eu
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F.M.E.C.A What is it ?
Failure Mode
Effect Analysis
Criticality Analysis
What effect does
the failure have ?
Probability of
the failure
Possible Failures F.M.E.C.A
F.M.E.C.A
F.M.E.C.A
F.M.E.C.A What is it ?
Independent Economies
Desig
n
Costs
applying
F.M.E.C.A
Savings
applying
F.M.E.C.A
<
Op
eratio
nCosts
applying
F.M.E.C.A
Savings
applying
F.M.E.C.A
<
Technical Barrier
Design
Oriented
Disciplines
Operation
Oriented
Disciplines
Technical Barrier
Design
Oriented
Disciplines
Operation
Oriented
Disciplines
F.M.E.C.A Analysis
Linear Graph
Theory
Bond Graph
Theory
Failure
Modes
Effect of
Failure
Reliability of
Components
Criticality
Bull et. Al.1997
Markov Analysis
Hydraulic
CircuitF.M.E.C.A
F.M.E.C.A Process
Dynamic Bond-Graph
Qualitative Bond-Graph
Qualitative Bond-Graph
Markov Process/State Diagram
State 1 Component works
State 0 Component failed
Reliability
Item.no Function Failure mode Local effect System effect Reliability * MTTF (h)
HW09 Ensuring that the motor
is filled with oil
under operation
P35 Bar
Valves does not closed Los of system pressure. Drop of load.
Brake will go on when P35Bar
5*10-5 20000
Valves does not open High system pressure.WH07
will open when
P4180Bar
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 PLeakage5P3
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.
Multi level Analysis
Hierarchy of Faults
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
QU
IPMENT
MAIN
COMPONE
NT
SUB
COMPONENT
GENERAL
FAILUREMODES
SPECIFIC
FAILURE MODES
REPORT
- Oreda structure
on each box
E
QU
IPMENT
MAIN
COMPONE
NT
SUB
COMPONENT
GENERAL
FAILUREMODES
SPECIFIC
FAILURE MODES
REPORT
E
QU
IPMENT
MAIN
COMPONE
NT
SUB
COMPONENT
GENERAL
FAILUREMODES
SPECIFIC
FAILURE MODES
REPORT
- Oreda structure
on each box
Report on Faults
A simple tick box
on the appropriate
level is all it takes
BT
BtT
I
Ht
H
GLt
GL Kt
K
(YL)1/p ZT(..)
p
qR qL QNQTQ
PT
q
pR pL
qT QT
QT
qL
PT
pL
pL
p P
PN
PL
I
HL
I
I
KT
VT
V tTFL
F tL
Pro
pertie
s
Connections
The Technical FoundationThe Technical Foundation
BT
BtT
I
Ht
H
GLt
GL Kt
K
(YL)1/p ZT(..)
p
qR qL QNQTQ
PT
q
pR pL
qT QT
QT
qL
PT
pL
pL
p P
PN
PL
I
HL
I
I
KT
VT
V tTFL
F tL
Pro
pertie
s
Connections
The Technical FoundationThe Technical Foundation
A Simple overlay on the existing data
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
QU
IPMENT
MAIN
COMPONE
NT
SUB
COMPONENT
GENERAL
FAILUREMODES
SPECIFIC
FAILURE MODES
REPORT
- Oreda structure
on each box
E
QU
IPMENT
MAIN
COMPONE
NT
SUB
COMPONENT
GENERAL
FAILUREMODES
SPECIFIC
FAILURE MODES
REPORT
E
QU
IPMENT
MAIN
COMPONE
NT
SUB
COMPONENT
GENERAL
FAILUREMODES
SPECIFIC
FAILURE MODES
REPORT
- 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
MonitoringDiagnostics
Selec
t loca
lly th
e ad
equat
e m
ainte
nance
sch
eme
•Bre
ak d
own m
ainte
nance
•Seq
uentia
l mai
ntenan
ce
•Pre
ventiv
e m
ainte
nance
•Conditi
on bas
ed m
ainte
nance
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
5P3
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
P4180Bar
Valves does not open
200005*10-5 Drop of load.
Brake will go on when P35Bar
Los of system pressure.Valves does not closedEnsuring that the motor
is filled with oil
under operation
P35 Bar
HW09
MTTF (h)Reliability *System effectLocal effect Failure modeFunctionItem.no
107539.3*10-5The speed and torque of the
drum will go down.
When PLeakage
5P3
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
P4180Bar
Valves does not open
200005*10-5 Drop of load.
Brake will go on when P35Bar
Los of system pressure.Valves does not closedEnsuring that the motor
is filled with oil
under operation
P35 Bar
HW09
MTTF (h)Reliability *System effectLocal effect Failure modeFunctionItem.no
Fault effects
The system gets
better and betterFocus where it matters for
safety, functionality and
economy
New Innovative
Technology
Applied to the control
and hydraulic systems
of an AS 332 Super
Puma helicopter
In cooperation with:
M
19
Qf1
Qrv
Qcv2
Qf2
Qfbp
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
New Innovative Technology
Applied to an autonomous
underwater vehicle in
cooperation with;
FieldCare AS
New Innovative Technology
Applied to an offshore Manrider winch
In cooperation with;
New Innovative Technology
Applied to a Lower Ricer Package
In cooperation with;
Manrider winch
AS 332 Super Puma
Lower Ricer Package
Autonomous
Underwater Vehicle