0558 Reliability, Availability, Maintainability (RAM)[1]
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Transcript of 0558 Reliability, Availability, Maintainability (RAM)[1]
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8/17/2019 0558 Reliability, Availability, Maintainability (RAM)[1]
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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
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LM-720-2
INFORMAL RAM DEFINITIONS
What are your definitions?
R.L/A/L/3
MA/4A/4A/L/3
A5A/LA/L/3
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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$en !orre!tive or
%reventive a!tion i %erfor#ed /A8 %re!ribed %ro!ed*re and
reo*r!e
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LM-720-9
A%AILA"ILIT#
A : ;;;;;;;;;;;;;/M<
M< = MR
A : ;;;;;;;;;;;;;MM
MM = MMA
A : ;;;;;;;;;;;;;;;;;;;MM
MM = MM = MLo
L=A
A/ - /n$erent Availability
A A - A!$ieved Availability
Ao - >%erational Availability
M< - Mean i#e etween
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LM-720-?
&NOW #O'R TERMS ?
.n*re yo*r /@ #e#ber all *e t$e a#e ter#inoloy
Ao
S.R
AA +>4RA+
+>4RA+>R
Ai
.S/G4.R
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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% $ith s,&&ly &r'+e",res
COECTIEMAINTENANCE TIME (CMT)
• Pre&arati'n ti#e
• .a,lt l'+ati'n ti#e• Gettin% &arts• C'rre+tin% /a,lt• Test an" +he+0',t
PEENTIEMAINTENANCE
TIME (PMT)
• Servi+in%
• Ins&e+ti'n
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RAM OLIC#
@M etabli$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
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RAM et @ra!ti!e
Analy1e
Desi%n
Test
eliability Pr'",+ti'n2 In3Servi+e Te+hni-,es
C'ntra+t
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RAM ANAL#SES$
Tehni)ues
Reliability @redi!tion Met$od
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RAM ANAL#SES$
Re*ia+i*ity redition Methods
evelo%#ental Met$od
4 Allo!ation
4 Handboo Su,,orta+i*ity 4 +o#%arative Ana*yses
4 etin In,uts
@roble#
4
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RAM ANAL#SES$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
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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
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RAM ANAL#SES$
Re*ia+i*ity Centered Maintenane
(RCM!
efinitionC A #et$odoloy *ed to identify
%reventive #aintenan!e ta
Goal of R+M 4 /n!reae o%erational readine
4 +ot effe!tive #aintenan!e
@rod*!t of R+M %rora# 4 /n%e!tion and ti#e-related ta
e
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RCM Deision Questions
/dentify %e!ifi! f*n!tional fail*re
t$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$e !ot of re%air
& o%eration !one*en!e3
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RAM ANAL#SES$
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
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S%are rainin @HS& @eronnele!$ni!al
ata
ool &
S*%%ort
.*i%
RA
+o##on
So*r!e
.nineerinata ae
8or
readown
Str*!t*re
+andidate
Reliability
@redi!tion
R+M
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RAM DESI.N$
Re*ia+i*ity Desi3n Tehni)ues
Miion %rofile
Stre analyi
8ort !ae analyi
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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
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SOFTWARE RAM
+o##on %er!e%tionC 4 H.R. /S 4> S+H H/4G AS S>.S4N O
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CA'SES OF SOFTWARE ERRORS
“
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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
?
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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
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RAM TESTIN.$
Considerations
RAM in!l*ded in .M@
S*ffi!ient tet !$ed*le la! ti#e
4eed a re%ortin and !orre!tive a!tionyte#
/dentify a realiti! o%erational tet
!enario
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LM-720-29
RAM TESTIN.$(E6AMLE!
Maintaina+i*ity De7onstration Test
%erational or i#*lated o%erational
environ#ent *in a%%ro%riate #aintenan!e
%eronnel
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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
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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
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LM-720-27
RAM CONTRACTIN.$Co7anhe Soure Se*etion
SS. 8./GH/4G +R/.R/A
.L.M.4S
AR.AS +>S20
.+H4/+AL6?
RAMFS@@>RFKAL/
17?
MA4@R/4FRA/4/4G
17?
@R>+//L/F@R>+/>4+>M@.//>4
10
.5.L>@M.4+>S(10)
A/R5.H/+L.
(90)
RAMFKAL/
(B0)
MA4@R/4(?0)
@R>+//L/(?0)
++>MM/M.4S
(90)
MS4 .K/@@A+IAG.
(90)
S@@>RA/L/(90)
RA/4/4G(?0)
@R>+/>4+>M@.//>4
(?0)
> & S +>S+>MM/M.4S
(90)
S>RGFMGM4F@LA44/4G
(G>F4>-G>)
>RGFMGM4F@LA44/4G
(G>F4>-G>)
MA4AG.M.4(G>F4>-G>)
>H.R L/SS
(10)
.SA4 .5AL
(10)
+>MM>4A5/>4/+S AS.-
L/4. /M@L(G>F4>-G>)
>@.RA/>4AL S/A/L/(G>F4>-G>)
E x a m p l
e
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LM-720-2D
0OW RAM "ENEFITS T0E FIELDRAM !$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$e above oal
S C C
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LM-720-2E
"EST RACTICE$
S'ORT ELEMENTS
SS.M
MMoSS
+o#
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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
$tt%CFFwwwG/.@+>R>4A4A5M/L
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LM-720-61
Additional Slide
Pr'vi"e" /'r re/eren+e 'nly
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4ew evelo%#entRAM Ati2ity +o##er!ialF4/
RAM Ana*ysis8
Re)uire7ents
RAM Desi3n
• er 4eed• e!$noloy in *e
• @erfor#