RAMS AND LCC
SAMENVATTING
07-02-2018
Samenvatting RAMS en LCC
,INHOUDSOPGAVE
Week 1: Wat is rams? ..................................................................................................... 5
Officiele voorschriften .................................................................................................. 5
De verschillende soorten failures .................................................................................. 5
Welke kansfuncties kennen we nog? ............................................................................. 6
Hoe is de normering? ................................................................................................... 6
Wat is de verwachtingswaarde? .................................................................................... 7
Reliability – begrippen en definities ............................................................................... 7
stoorkansdichtheid....................................................................................................... 7
Stoorkansdichtheid R en F ............................................................................................ 7
MTTF en Failure rate.................................................................................................... 8
Crashcase week 1: De Havilland Comet 1B ....................................................................... 8
Week 2: Levensduurtesten ............................................................................................ 10
bronnen van degradatie ............................................................................................. 10
Normale verdeling ..................................................................................................... 10
Negatieve exponentiele faalkansfunctie ....................................................................... 10
MTTf bepalen met de normal distribution .................................................................... 11
Normale of poisson verdeling ..................................................................................... 11
Kansverdelingen ........................................................................................................ 11
Normale vs logonormale verdeling .............................................................................. 12
Gamma functie .......................................................................................................... 13
Reliability Bathtub curve............................................................................................. 13
Week 3: system reliability .............................................................................................. 14
Functional Hazard Assessment.................................................................................... 14
System reliability ....................................................................................................... 14
Reliability block diagram............................................................................................. 15
Complex systems ....................................................................................................... 16
Truth Table ............................................................................................................... 16
2
, Path sets................................................................................................................... 16
Cut Sets ‘Quick and Dirty’ ........................................................................................... 17
Cut sets the official method ........................................................................................ 17
Week 4: Fault Tree Analysis and standby system reliability .............................................. 18
FTA probability calculation.......................................................................................... 18
system reliability of standby systems .......................................................................... 19
Perfect switchover ..................................................................................................... 19
Imperfect switchover ................................................................................................. 20
Crashcase week 4: Turkish airlines B737 Crash ............................................................... 20
Week 5: Failure Mode Affect Analysis ............................................................................. 21
What is FMECA? ........................................................................................................ 21
USES for fmeca ......................................................................................................... 21
Performing fmeca – preparation ................................................................................. 21
performing FMECA – analysis ..................................................................................... 21
Performing FMECA – documentation ........................................................................... 22
Failures ..................................................................................................................... 22
criticality ................................................................................................................... 22
Certification Maintenance Requirements ...................................................................... 23
CMR versus MSG-3 .................................................................................................... 23
Week 6: operational safety ............................................................................................ 24
Hollnagel: 4 levels of control mode ............................................................................. 24
Operational safety and complexity .............................................................................. 25
Aircraft maintenance .................................................................................................. 25
Maintenance steering group ....................................................................................... 25
MSG philosophy ......................................................................................................... 26
General structure failure modes: ................................................................................. 26
Maintenance tasks ..................................................................................................... 27
Working groups...................................................................................................... 27
Industry steering comittee ...................................................................................... 27
3
SAMENVATTING
07-02-2018
Samenvatting RAMS en LCC
,INHOUDSOPGAVE
Week 1: Wat is rams? ..................................................................................................... 5
Officiele voorschriften .................................................................................................. 5
De verschillende soorten failures .................................................................................. 5
Welke kansfuncties kennen we nog? ............................................................................. 6
Hoe is de normering? ................................................................................................... 6
Wat is de verwachtingswaarde? .................................................................................... 7
Reliability – begrippen en definities ............................................................................... 7
stoorkansdichtheid....................................................................................................... 7
Stoorkansdichtheid R en F ............................................................................................ 7
MTTF en Failure rate.................................................................................................... 8
Crashcase week 1: De Havilland Comet 1B ....................................................................... 8
Week 2: Levensduurtesten ............................................................................................ 10
bronnen van degradatie ............................................................................................. 10
Normale verdeling ..................................................................................................... 10
Negatieve exponentiele faalkansfunctie ....................................................................... 10
MTTf bepalen met de normal distribution .................................................................... 11
Normale of poisson verdeling ..................................................................................... 11
Kansverdelingen ........................................................................................................ 11
Normale vs logonormale verdeling .............................................................................. 12
Gamma functie .......................................................................................................... 13
Reliability Bathtub curve............................................................................................. 13
Week 3: system reliability .............................................................................................. 14
Functional Hazard Assessment.................................................................................... 14
System reliability ....................................................................................................... 14
Reliability block diagram............................................................................................. 15
Complex systems ....................................................................................................... 16
Truth Table ............................................................................................................... 16
2
, Path sets................................................................................................................... 16
Cut Sets ‘Quick and Dirty’ ........................................................................................... 17
Cut sets the official method ........................................................................................ 17
Week 4: Fault Tree Analysis and standby system reliability .............................................. 18
FTA probability calculation.......................................................................................... 18
system reliability of standby systems .......................................................................... 19
Perfect switchover ..................................................................................................... 19
Imperfect switchover ................................................................................................. 20
Crashcase week 4: Turkish airlines B737 Crash ............................................................... 20
Week 5: Failure Mode Affect Analysis ............................................................................. 21
What is FMECA? ........................................................................................................ 21
USES for fmeca ......................................................................................................... 21
Performing fmeca – preparation ................................................................................. 21
performing FMECA – analysis ..................................................................................... 21
Performing FMECA – documentation ........................................................................... 22
Failures ..................................................................................................................... 22
criticality ................................................................................................................... 22
Certification Maintenance Requirements ...................................................................... 23
CMR versus MSG-3 .................................................................................................... 23
Week 6: operational safety ............................................................................................ 24
Hollnagel: 4 levels of control mode ............................................................................. 24
Operational safety and complexity .............................................................................. 25
Aircraft maintenance .................................................................................................. 25
Maintenance steering group ....................................................................................... 25
MSG philosophy ......................................................................................................... 26
General structure failure modes: ................................................................................. 26
Maintenance tasks ..................................................................................................... 27
Working groups...................................................................................................... 27
Industry steering comittee ...................................................................................... 27
3
