0558 reliability, availability, maintainability (ram)[1]

8/17/2019 0558 Reliability, Availability, Maintainability (RAM)[1]

1/32

LM-720-1

LM-720

Reliability, Availability, & Maintainability (RAM)(Hardware and Software)

Given a !enario, e"a#ine t$e %ro!e and

i#%a!t of Reliability, Availability, and

Maintainability %oli!ie and %rora# ob'e!tive

on yte# dein and %erfor#an!e for bot$

$ardware and oftware

• i!* o %oli!ie and #anae#ent #et$od to

a!$ieve Reliability, Availability and Maintainability oal

• +o#%are and !ontrat t$e effe!tivene of vario*

Reliability, Availability, and Maintainability te!$ni*e

• Analye t$e effe!t of Reliability, Availability, and

Maintainability on o%erational effe!tivene and life

!y!le !ot


2/32

LM-720-2

INFORMAL RAM DEFINITIONS

What are your definitions?

R.L/A/L/3

MA/4A/4A/L/3

A5A/LA/L/3


3/32

LM-720-6

FORMAL RAM DEFINITIONS (ASQC RAM ditionary!

RELIA"ILIT#$ $e %robability an ite# will %erfor# it intendedf*n!tion for a %e!ified %eriod *nder tated !ondition

A%AILA"ILIT#$ A #ea*re of t$e deree to w$i!$ an ite# i in

t$e o%erable and !o##ittable tate at t$e tart of a #iionw$en t$e #iion i !alled for an *nnown (rando#) ti#e

MAINTAINA"ILIT#$ $e %robability an ite# will !onfor# to%e!ified !ondition wit$in a iven %eriod w$en !orre!tive or

%reventive a!tion i %erfor#ed /A8 %re!ribed %ro!ed*re and

reo*r!e


4/32

LM-720-9

A%AILA"ILIT#

A : ;;;;;;;;;;;;;/M<

M< = MR

A : ;;;;;;;;;;;;;MM

MM = MMA

A : ;;;;;;;;;;;;;;;;;;;MM

MM = MM = MLo

L=A

A/ - /n$erent Availability

A A - A!$ieved Availability

Ao - >%erational Availability

M< - Mean i#e etween


5/32

LM-720-?

&NOW #O'R TERMS ?

.n*re yo*r /@ #e#ber all *e t$e a#e ter#inoloy

Ao

S.R

AA +>4RA+

+>4RA+>R

Ai

.S/G4.R


6/32

LM-720-B

OERATIONAL A%AILA"ILIT#

SA4/M.

>@.RA/4G/M.

A :o @/M. = >84/M.

LOGISTICDOWN TIME (LDT)

• Parts Availability “In the in!• Nee"e" ite#s

a$aitin% trans&'rtati'n

ADMINISTATIEDELA* TIME (ADT)

• L'+atin% t''ls

• Settin% ,& test e-,ient• .in"in% &ers'nnel

(traine")• evie$in% #an,als• C'#&lyin% $ith s,&&ly &r'+e",res

COECTIEMAINTENANCE TIME (CMT)

• Pre&arati'n ti#e

• .a,lt l'+ati'n ti#e• Gettin% &arts• C'rre+tin% /a,lt• Test an" +he+0',t

PEENTIEMAINTENANCE

TIME (PMT)

• Servi+in%

• Ins&e+ti'n


7/32LM-720-7

RAM OLIC#

@M etabli$e RAM a!tivitie to #eet

o%erational need and red*!e life-!y!le !ot

RAM re*ire#ent tated in *antifiable ter#

Reliability re*ire#ent $all addreC

ot$ #iion and loiti! reliability

Maintainability re*ire#ent $all addreC

Servi!in @reventive and !orre!tive #aintenan!e

Availability re*ire#ent $all addreC

Readine of t$e yte#o ?0002-R


8/32LM-720-D

RAM et @ra!ti!e

Analy1e

Desi%n

Test

eliability Pr'",+ti'n2 In3Servi+e Te+hni-,es

C'ntra+t


9/32LM-720-E

RAM ANAL#SES$

Tehni)ues

Reliability @redi!tion Met$od


10/32LM-720-10

RAM ANAL#SES$

Re*ia+i*ity redition Methods

evelo%#ental Met$od

4 Allo!ation

4 Handboo Su,,orta+i*ity 4 +o#%arative Ana*yses

4 etin In,uts

@roble#

4


11/32LM-720-11

RAM ANAL#SES$Fai*ure Modes- Effets and

Critia*ity Ana*ysis (FMECA!

.4C A review t$at e"a#ine %otential fail*re #ode to

deter#ine t$eir effe!t on e*i%#ent .#%loy a botto#-*% a%%roa!$

S.SC /dentifie area needin !orre!tive a!tion Ran everity of fail*reFafety i*e /dentifie reliability-!riti!al !o#%onent /n%*t to yte# enineerin and loiti!

%ro!ee


12/32

FAIL'RE MODES- EFFECTS ANDCRITICALIT# ANAL#SIS (FMECA!

4*#ber

SS.M 4AM.S@A+. SHL. M@ SRM

10-00

SSS.M 4AM.SRM +AS.

10-0B

+>M@>4.4 4AM. A4@AR 4>+AS. ASS.ML, R8AR 10-0?-01

S.GM.4

1?0197-0D

AH>R A4

+>M@A48 L HA4I/4.H/>I>L +>R@>RA/>4

A.

J4. 1ED6R.5/S/>4

+>M@>4.4 4

M/SS/>4

@HAS.

+>M@>4.4 .

A4.4

44.L

+>4R>L M.H>S

> /4SR. A

R.L/AL. @R>+

ASS.ML J>/4S L.AI

@AR 4>

1?0161-0E

1?1976-011?022D-29

11002BE-01

1?022D-1?

@AR 4AM.

+AS. S.GM.4, +L/4.R+AS. S.GM.4, R8AR

@A+I/4G (>-R/4GS)

.S @LG@A+I/4G (.S @LG)

2

12FJ>/4

1FJ>/4

1F@LG

KA4/

@.R

+>M@>4.4

1 A4G-A-/AM..R .+..S @@.R L/M/ >R SR4RM/4G, >R /S G>G.R4+>4RM/4G (/AM..R, H/+I4.SS, -R/4G GR>>5.S .+.. 8/H A4F>R .@H

@@.R L/M/S >R +>RR>.

9 0-R/4GS 4>4+>4RM/4G >R AMAG. R/4G ASS.M- L

? L.AI +H.+I @LG L>>S. >R 8/H> >-R/4G, /44.RM>S

S.AL /4.R H. +>4//>4S >< >- R/4G AR. @.R 9 A>5.

B FOREI.N MATERIAL IN O/RIN. .ROO%ES 7 /G4/.R 4+>4RM/4G, A/>4 +AS.S L/-R/4G (@R/MAR >-R/4G 8/LL R.MA/4 /4 +>[email protected]/>4)

E .@A4S/>4 >< +L.5/S GA@ .+AS. >< R.S/AL SRA/4S

R.SL/4G M MA4+.SS.S

A H/GH [email protected]. GAS 8

8/LL +AS. M.AL .R>S/>4

A4 @R>AL. R4HR>GH A4 +AS. RS +AASR>@H/+ <

SRM+ M/SS/>4 L>SS

%E0ICLE AND

ERSONNEL LOSS1

1

(1)

(1R)

(1R)

(1R)(1)

(1R)(1R)

(1R)

(1R)

S.. +/L

1 RA/4., KAL/ @.RRM

MA+H/4/4G >@.RA/>4

2 S@.+/AL @R> +>4R>L LAH. +/4G H.A

6 100 /4S@.+/>4 >< A4G- /AM..R, +L.5/S, /M.4 -

S/>4S A4 >-R/4G GR>>5.S

S/4G @/ A@. A4 SA4- AR M.ASR/4G /4SR-

M.4S SR4

100 /4S@.+/>4 ><

/G4/.R R

Exam ple


13/32LM-720-16

RAM ANAL#SES$

Re*ia+i*ity Centered Maintenane

(RCM!

efinitionC A #et$odoloy *ed to identify

%reventive #aintenan!e ta

Goal of R+M 4 /n!reae o%erational readine

4 +ot effe!tive #aintenan!e

@rod*!t of R+M %rora# 4 /n%e!tion and ti#e-related ta

e


14/32LM-720-19

RCM Deision Questions

/dentify %e!ifi! f*n!tional fail*re

t$e %reventive #aintenan!e ta

i deined to %revent

/dentify %e!ifi! f*n!tional fail*re

t$e %reventive #aintenan!e ta

i deined to %revent

8$at i t$e !one*en!e of t$at fail*re38$at i t$e !one*en!e of t$at fail*re3

8$at doe fail*re data & o%eratin e"%erien!e $ow3

8$at doe fail*re data & o%eratin e"%erien!e $ow3

ire!t advere effe!t on o%erational !a%ability3Lo of f*n!tion3

+a!adin fail*re - e!ondary da#ae3

Safety !one*en!e3

ire!t advere effe!t on o%erational !a%ability3Lo of f*n!tion3

+a!adin fail*re - e!ondary da#ae3

Safety !one*en!e3

+ot - oe t$e ta %ay for itelf3

/ !ot le t$an t$e !ot of re%air

& o%eration !one*en!e3

+ot - oe t$e ta %ay for itelf3

/ !ot le t$an t$e !ot of re%air

& o%eration !one*en!e3


15/32LM-720-1?

RAM ANAL#SES$

Le2e* of Re,air Ana*yses (LORA!

.val*ate #aintenan!e a!tion to

deter#ineC

4 e!ono#i! re%air v di!ardin an ite#

4 w$i!$ #aintenan!e level !an t$e ta be

a!!o#%li$ed #ot !ot-effe!tively if

re%aired


16/32LM-720-1B

S%are rainin @HS& @eronnele!$ni!al

ata

ool &

S*%%ort

.*i%

RA

+o##on

So*r!e

.nineerinata ae

8or

readown

Str*!t*re

+andidate

Reliability

@redi!tion

R+M


17/32LM-720-17

RAM DESI.N$

Re*ia+i*ity Desi3n Tehni)ues

Miion %rofile

Stre analyi

8ort !ae analyi


18/32LM-720-1D

RAM DESI.N$

Maintaina+i*ity Desi3n

Considerations

H*#an enineerin

A!!eibility

5iibility

Re%air level

et e*i%#ent

ool

Standardiation

Si#%li!ity

Sill re*ire#ent


19/32LM-720-1E

SOFTWARE RAM

+o##on %er!e%tionC 4 H.R. /S 4> S+H H/4G AS S>.S4N O


20/32LM-720-20

CA'SES OF SOFTWARE ERRORS

“


21/32LM-720-21

SOFTWARE RAM TOOLS

1 Good identifi!ation of re*ire#ent

2 Mod*lar dein

6 e of $i$er order lan*ae

9 e of a inle lan*ae

?


22/32LM-720-22

RAM TESTIN.$

o*iy

RAM $all be *antifiable in o%erational ter# eted in and >

efined for all ele#ent of t$e yte#

(in!l*din trainin & *%%ort e*i%#ent)

RAM e#ontrationC @rod*!tion re%reentative

D'D 5666783


23/32LM-720-26

RAM TESTIN.$

Considerations

RAM in!l*ded in .M@

S*ffi!ient tet !$ed*le la! ti#e

4eed a re%ortin and !orre!tive a!tionyte#

/dentify a realiti! o%erational tet

!enario


24/32

LM-720-29

RAM TESTIN.$(E6AMLE!

Maintaina+i*ity De7onstration Test

%erational or i#*lated o%erational

environ#ent *in a%%ro%riate #aintenan!e

%eronnel


25/32

LM-720-2?

RELIA"ILIT# ROD'CTION ANDIN/SER%ICE TEC0NIQ'ES

S*tain reliability in %rod*!tion @ro!e !ontrol

S!reenin F a!!e%tan!e tet *rn-in

S*tain reliability in ervi!e

Maintenan!e data !olle!tion yte# Analyi and !orre!tive a!tion


26/32

LM-720-2B

RAM CONTRACTIN.

+. @RR .M @, &S

.n!o*raed t$ro*$

/n!entive

Alway a So*r!e Sele!tion F .val*ation


27/32

LM-720-27

RAM CONTRACTIN.$Co7anhe Soure Se*etion

SS. 8./GH/4G +R/.R/A

.L.M.4S

AR.AS +>S20

.+H4/+AL6?

RAMFS@@>RFKAL/

17?

MA4@R/4FRA/4/4G

17?

@R>+//L/F@R>+/>4+>M@.//>4

10

.5.L>@M.4+>S(10)

A/R5.H/+L.

(90)

RAMFKAL/

(B0)

MA4@R/4(?0)

@R>+//L/(?0)

++>MM/M.4S

(90)

MS4 .K/@@A+IAG.

(90)

S@@>RA/L/(90)

RA/4/4G(?0)

@R>+/>4+>M@.//>4

(?0)

> & S +>S+>MM/M.4S

(90)

S>RGFMGM4F@LA44/4G

(G>F4>-G>)

>RGFMGM4F@LA44/4G

(G>F4>-G>)

MA4AG.M.4(G>F4>-G>)

>H.R L/SS

(10)

.SA4 .5AL

(10)

+>MM>4A5/>4/+S AS.-

L/4. /M@L(G>F4>-G>)

>@.RA/>4AL S/A/L/(G>F4>-G>)

E x a m p l

e


28/32

LM-720-2D

0OW RAM "ENEFITS T0E FIELDRAM !$ara!teriti! are not i#%ortant in t$e#elveQ

A!$ievin t$e ob'e!tive lited below i w$at i i#%ortant

In+rease" +'#bat +a&ability

4 I#&r've '&erati'nal rea"iness 9 availability

4 etter syste# ,tili1ati'n

4 :i%her &r'bability '/ #issi'n s,++ess

e",+e" Li/e Cy+le C'sts

4 Less #aintenan+e #annin%

4 De+rease" l'%isti+s s,&&'rt /''t&rint

RAM !$ara!teriti! are i#%ortant to t$e e"tent t$at

t$ey infl*en!e t$e ability to a!$ieve t$e above oal

S C C


29/32

LM-720-2E

"EST RACTICE$

S'ORT ELEMENTS

SS.M

MMoSS

+o#


30/32

LM-720-60

RAM WE" SITES

Reliability Analyi +enter (RA+) 3 a D'D in/'r#ati'nanalysis +enter7 Serves as a G'v;t an" in",stry /'+al &'int

/'r e//'rts t' i#&r've the reliability< #aintainability an" -,ality

'/ #an,/a+t,re" +'#&'nents an" syste#s7

$tt%CFFra!iitriorFRA+

GovNt /nd*try ata ."!$ane @rora# (G/.@)

C'ntains 2M "ata inter+han%e7

$tt%CFFwwwG/.@+>R>4A4A5M/L


31/32

LM-720-61

Additional Slide

Pr'vi"e" /'r re/eren+e 'nly


32/32

4ew evelo%#entRAM Ati2ity +o##er!ialF4/

RAM Ana*ysis8

Re)uire7ents

RAM Desi3n

• er 4eed• e!$noloy in *e

• @erfor#

0558 reliability, availability, maintainability (ram)[1]

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