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8/18/2019 86-138-1-PB
1/10
rftar
si
Draw
PointConstruction
mprovement
slng
SixSigma
[,1u6yid
asan
asd, akhmat
ulyanh
Pengcmbangan
engukuran
aya aing
engan
lfefodo/o
i
World conomic
orun
(IVEFJ
ntuk
ingkat ropinsi
awa arat:
asil
engukuran
dan
dentifikasi
aktor
Kunci
Dwi
arso
Model
truktural
engaruh
tribut roduk
erhadap
epuasan
an oyalitas
Pelanggan:
tudi asus
elanggan
elkomsel
i Jabodetabek
lstiSurjanda.i,eny amdani
Pond's rand
Community
otentiatr
mongHigh
School
emale
tudents
n
Bandung
leza
shad asulion,
aninia
adiahi
)enga-ruh.
Nilai.Nilai
ersonal,
aya epemimpinan
anBudaya
rganisasi
rerhadap
epuasan
erja
aryawan
\udkGuslomo.
nita
SiManita
renggunaan
Soft
Systen
Methodoloy
an
Grounded
heory
alam
Membangun
eorl
rada
enelitian
roses trateglStntegy
rocxs
Researchi
/idjajani.
una
lahja Djaiadiningral,
ariLubis,Gatot
udoko
rnalisis
ebijakan
engembangan
ndustri
reatif
i Kota
Bandung
)gar
\4. lmalupang,
atot udoko,
uanlb
andayati,gung
asc€suseno,
'ishna
Pemadi,
anda
istiani
J u r n a l
M a n a J e m e i
T e k n o r o { l
Volum€8Number12009
Draw
oint
onstruction
mprovemen
Using
Six
Sigma
t{ursyld
Hasan
a3rl
Ope€tons
nd
Pedomance
anagement
roilp
school l
gtlsiness
nd
Managemenl
TB
c
d
Ralhnat
Mulyanto
Depafunent
f
Unde€ound
onsbrlclion
PT. reeportndonssia
€khmal-mulyanto@ftni
om
Abstract
Dtaw
pdnt
s a toadhg
pointberosll,
I slope,
u61i'jng
av
y
to
'ove down
bulk
maleial
n
tJndeenundMlno
,ock
Ca,,;,ng
f PT
Fr,glr,tl
ndonesia'
4dnw
poinl
s a sloo/
61
't
is ot€ded
nd
pourei
n
ptace
wllh
6,nmte.
Tltt|B a'E
sub
prccsssgs
t
d|rw
poinl
consfuc0onl
'ito
rEparadon'
'leancot'l/Jr,le,anboddedrail,uncnlef,(r,t'anvillop'linletfit'lotning&rneshirq'wallEtcfi
conl)r)le,
@plng
genetal
ean4p.
Eased
n data
anatsb
pedtd
2008'
'eta
s 8
gap
1 03
uhll
dnw
Nint
ol
yea;y
wgot
ttiltt
avaElgo
l @ntpblion
ine
ot a
daw
Nnl
@n*udjon
46
44 shitls
€nd
"Ona"rU
a*irtion
O.gS
t'
ns. ftis
stowet
W
g
7y"ot
a4st
t2
stfits
lho
hrgh radad
deiatin
aN
slor{gf rccess
,rdic€fo
lo
s is a
ptffist
quary
pto
r/n n
dnw
Fint
@ndnrtioNt
l
nakes
dnw
poinl
anstrudion
n.f,nf,iance
o achieve
ls nonkly
ot
yesv
larget'
Fo nplovingho
prccess
uav
Six
Signa
ap'(,ach
wth
DMAIC
ethdolqy
will
bo usod
o dentilv
incaoabre
mcoss
nd s
causes.
]hen
altemalive
ott
.,ts
ae
UorDsed
o
6' iI and@ntol
theke'l
pfg.gss
ar'ables
susitg
ie deftcls'
Key
words: onfletionline,
P0c€ssQualty
Stx
Srgma,
MAIC
1. nkoduction
Draw
point
s a
loadlng
point
beneaf
a slope'
utitilng
gravity o move
dom
blllk
matenal
n
Undeeround
ine
Block aving
l
PTFreepod
ndonesia
h€dt8w
dnt
constuclion
locess
consisb
ofgsubprccess€sthatisstar|edlromsitepreparationandfinishedbysbippingandgene
The
oiclures
fdraw
oinl
ub
process le
p€senledn Figures
-8
8/18/2019 86-138-1-PB
2/10
Underground
ine son€
fPT
Freeportndonesia
lning
ivision,
ive
esponsibility
o
undsrground
construction
epartmenl
hat onstructsraw
oint
aybydayasamount
hats
planned
n Rr\AB.
CunenllyJG
onstruction
as 8 mployees
ordrawpointconstruclion
hatwo
n24houls(oneday
consistof3shifts:
ay,
wingnd
ightshift)grouped
n4 rews
hatollowoster
-2, -2, -3.
Based
nanalysis
ala raw
oint
onstructio
n
period
008,heres
a
gap4.03
nitdrawpointrom
yeatly
arget
145.97
nils f
150units
eay
target) ith
ve.agefcompletion
ime fdraw
oint
conslruction46.44
hitts nd
landardoviation
_95hjfts.t s
lower.7%
l arget2 hjfts.he
igh
standard
eviation
ndslower
rocess
ndicated
heres
a
process
uality roblem
n draw
oint
construclion.
t
willhave
irecllympact
n he ncomplianco
fdraw
oint
onstruction
oRKAB
arget.
To mprove
his
pfocess
uality
roblem,
[,4A|C
rameworkDeline-Measure-Analyze-lmp.ove-
Conlol) ill
eused
Pfzdet,
003a).
MAICsa vatuable
ool hat
elps
eopt€
inds
emanent
solutions
o ong-standing
rtricky
usiness
roblems
ocus n
uslomerrequirement.
ome
oolshal
ar€ sedn
his tudy
re eferedoPyzdek
2003b).
FbuG . 6 D Coicr.t I Emb.dodatl
L i
r r
a ,
N
e ' l a
j e f t . 4 r
r e k . t
I
F{uc 7 w'll I R@l Fmii9 aid Cs@E
FsuE0 StDriA t @ftlO.r'
uo
2.Define
The
irst iepo
get
heSix igma
tarled,
roposedroject
hader
hal esc.ibes
e cudenl
ituation
f
dnw
poinl
onslruction
rocess,
he bjec0ve
ndhe cop€tlhis
mprovement.
igure
pres€nls
e
pojectharterf his rcjectormprovingraw ointonsttuctionocess.hemain bjectives
get
significant
mprovement
n
process
peed
y ncreasing
roductivity,
ecreasing
adation
ncrew nd
eliminatingon dded
alueo educe
ompletionme9.77.
aster ndo
reduce
an
hiff
obe
136
manshifts
erunil.
CdrpladdrTltnc
It
Adrlavqnrnt Der Cilw
8/18/2019 86-138-1-PB
3/10
Afier
he
prdecl
harlorlroadypproved,hengxt teps
preparo
hoas-is
rccess
appingfdraw
polnl
onslrucllons hown:
Elgr
e
10. he rossunctlonal
rocess
appingoscdbesllofactivity
in
d|aw
oint
onstucton
rcc€sg.
ffgr r€atod
rocess
ap,hsnwill b9 donlifiedho re he
suppliersnd ustomers
f draw
oint
onstruc,lion
rccess.
IPOCiagram
n Figurc i
presents
supplier
S),
nput
rocess
l),
rocess
P),
ulput
ocessO)
nd ustomer
C).
E
i'il
E
a
t
; :
;rs
9 l
; l
l*
E',s
E-EEEE, ,rEtrriy=l
Frgr
l[ A&b Mlpore
Fhr
Ccr .ion Pro6.
cu.tomfi i.(rllr.i|..t
Bett r
ve.t2,5 unlts DP
per
month 9
)elNar 150 unltr DP na
\car 9
ED 3
ED lette hando\€r rocess
3
cc
I
EO
rlme comole ion 42
shllrtoe. unit DP 9
-esstnan
5
5611s/ dit DP
er
month 9
ED
.essthan 136 manshifts/unlt 0P
per
1
cc
' '5F
9
' 3
1
Entlru.dnt O€partment
Co$tControl Departlrlent
HIgh6t
J u r n a l l , , l
a f a l e r n e n
T e k n o t o l J
L
Fgucn SPOC
D6*
poml
sdruclM
OLrlputf
draw
oinl
onstruction
hen
willbe
aligned
ith uslomer
quiremenl
oice f @stomer
(VOC)
an
b€ a tool
to identry
what
s the critical
output
o costomer'
Based
on
inteNiew
wilh
Engineering
epartment,
roduclion
epartment
ndCost
Contot
oepa'bnent,
ecan
get
hevoice
f
cuslomerNOC)asshown
nTable
.
WPOINT CONSTRUCTION
PROCESS
OUTSUT
CUSTOMER
8/18/2019 86-138-1-PB
4/10
3.Moalurc
Measu.
s
a
phasg
o
measuro
he ur€nt
rccess
€rfomance.
t
sno€dod
o
noasurc
he urent
process
omplian@
lth
ustomor
equkement.
efore
easudng
he
urent
rocess
ompjiance,
l
rs
need€d
o conduc.t
te
measuBment
ystem
nalysisMSA)
odarify
o
capability
f measurement
tools.
or
raw
oinl
ocess,
uronty
UG
Construction
ave
ield lppod
ersonnel
ach
hiff hat
appraisss
hin
rogruss
n
€nd
f treshifr
hat
will C
eporled
o senior
anagemenl.
o
@nduct
ne
MSA{t
will
ea est
ohem
using
ome
ictu.e
f ask
obe
appfaised
he
rogress
l hem
wice.
I
ne
resull
fthe
estsdescdb€d
nTable
.
Ed€
2 llSA
b.*
pdnlpt
dlf
Based
n
data
bov6,
slng
Minitab
oflwaro,
t s
analzod
auge
oprcducibitity
nd
Repeatability.
llo
analyrb
"lult
6
sho{,nn
Flgu.s
2, he
mo"t
%conhbullon
l vada
n
comercm
arl-to.psd
93.87%
lle6.'l3%
ontdbuflon
l he
Gauge &Rbelow
0%).
h6
umbor
tdistinct
ateqories
s5
(more
han ).
So
basod
nh9
Automobile
ndustry
clion
oup AIAG)
tandad,
hemea-surement
systemisacceplable(Hendradi
006).
o.C.
Rtn
lnldt
-
A'IOVA
.OEd
tloc ...
.tri.t1.n
I
.r..u.ry
?OO9
P.po.r.d
by:
-Ir.-$rr
Axon^
t br.Wtiffi6
I . s r
r
l r p r r i . . r
ra
5a6 .0
2r
t31 .0
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r a . 6 r t
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1 1 . 9 0 2
255.212
l 0 r . a 9 a
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[*rbb
J
u r
n
a I
M
a
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e n
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o l o
q
I
O .
RIR
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flr
or6Flt
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Drn ot rv: r ).ud ll 9
--------- :==-
-t-------ilr=--
&r .H I
L| lI-::::
|
.l t*-{
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J-"-'-J
\l
a.F.rdh':
ilrdrrr.'a
ffi;
r''r*.'..rl.l.a
r:l\,^lH
[email protected]€lR Ct n
Attercheckinghg
capability f he measurcment
hidr s ac4eptable. |en
l will be condnued y
measudng
he draw
oint
omplianc€o
voice l dstomer Table shows
hathe
qlfienl
prccess
as
hlgh efectmte. he
result
ives
swaming yslem
hal he
process
anb€
ncapable.
trbr. 3 0.i..101in. curir P'ug
r.lh
tal
,.r 12.5 .ll| 0P
0..
monlh
EO f t l i v . r 150unr 3 P
n.
Y . . r
EO
ED
8.nr
h.ndove.
ord.33
cc
EO
I i n . . o m o l . l i m 1 2 . h i f t
D . r
n i l Op 9
cc
Ie r s h .n
5
56 ,115 /un i t P
et
mo^ lh
EO
rl5 nanrhrllt /un't DP oe, honlh
TSsa
a0
cc
I
EnB iEe . ingD€p. r thenr
co3rconkol Dep..rne.r
To heckhe pability f
he
rocess
hentwill e onducted€pabilitynalysis
or e axrent
rccess.
The ata
nouttoMinitabs
comoletion
ime achask fdBw
Doinlorocess.
ltere re155 ata
iom
different
ocation.
he alanput
s
shown
nTable.Figure
.3
escdbese c€pabilitynalysisfD€w
poinl
Construction
roc€ss,
igures4
and
5 orwall
E
roofmeshinglormings ie
lowest
igma
lev€loldraw
ointsuborocassos.
hesummarizedoralldrawDointsub
rocesses
s hown
nTable
8/18/2019 86-138-1-PB
5/10
T.fls
1.
hb
InM
fo.C$obfig/vE
b
TabL
.
Sonnaiz€d
nc..s
Capodny
a.n
Tast
,tE
6Fl|It'
o?Or.w
t
tra
Flguru
4.
P@ss
Cap€blry
ot D.aw
poht
C.nsrddion
r r . r a r M i a a , , : m e r r e ,
t€{ C.Fllll'
., Srll I
l6t ta.|l4 a
tditha
Fiqu|s5.
mcossap€bililyl
wall Rool eshin{
Fo{irlng
Easedn
ub
rcc€sses
pability
esult bove,
all cotmeshing
oming
s01eowest
gma
evel'
Next tep,hissubprocess illbe udher nalfzedogethe rcot€use ol process uality oblem..
4,Analf:€
Byusing xperi€nce
ndoperalional
mnon
ensen
group iscussionnd
nleMew
lth ome
pgrson
nchargondraw
oint
onsbuction
iable
), t s oundome
otenlial
aus€s
l$e
ncapable
proc€ss
orwall& rof
meshing foming.
llhe
potential
€uses
illb€desc{ib€d
n Fault
ree
Analysisut nly
ignificanlperationally
nd latjslic€llyauses
ill eexplained
n
his
pap€r
Eblo 6. PeM in Ch.q.
in
o.fl
Finl
cnstucljo.
Figure
6
hows
heaullteo nalysis
fWall Roof
MeshingForming.he
ilst nalFis
s
conduded
on hs tabililyl
wall
&
oofmeshing
oming
rocess.
singe conbol
had s hown
n gure
, t
found
1
points
hatshe ndicalionl out l
cDntol
ro{ess.
t
shorn
nhult ee analysis,
e out f
conlrol
roc€ss
6
aused
y aclo6. hey re
umber
l
elea eadyiver lealiacaess
haring3nd
accesslockgd.asedn he pocialc€uses
nalysis,eover
rcakfnose umperM
draw
dnl
area rc
hemosl ommonausesf outot control
ocess.
t needso bestabilizedeforc
udle
impmvementsing
roblem
olving
rocess.
r.k. 4lCo.rihdirY
lo..n.- an*
pot.r. t
V.l. orl..d.oordin.tion
rnh ltlin.an.,
irshall
td.o.. Or.w
poid
C
i h i l r
d . m . n
D a s
P o i ^ r c 6 n u r i 6
V.k.dr.r
Poi^r
a
3dr.t t 'aaa
8/18/2019 86-138-1-PB
6/10
Figwe
16.Fauti
T6e
An.tsis
ot WaI &
RootMeshing
Fomins
Figu/e
17. Controt
Chan
ot Wa[
& Root Meshing
& Foming
"
H0 No
Din66n@
ttrdlcne ,m
&d
.
H,
o|fltrs€
pndu.rvry
6;ono
cr;
I-MR
Chart
of Wall
&
Roof
eshlng
& Forning
?
t
c
F,gue 9 Ana
s
s ol
Mean clNilyy C,ew
After nalyzing
heoutof contrcl
actors,
hen n control
aclor
s
elaboraled
he llsl analysrs
s
conductedo check
hecrclr
adance.ased
n wo
wayANOVA
esull
s
shown
n lglre
18which
analyzehe
mean teach rew
clivity
ershift
nd
rcgrcss
ershiftweot nfomalionhal here
sn
sufficienl
videncet 950/0
evel l signillc€nce
oshow
hat ifferenc€
roducllvity
mong 'ew
Ho)
becauseofp-value
orehan .05.
Figu@ 3 TwoWay NOVA
clivrtynd
og@$
WR
p€r
Crew 0.y ol@t*
Then
twill eanalyzedhe
roduclivityotcrewin
all&rcolmeshlng
oming
rocess
ased0ntabie
7, he urent
roductivity
ershift
sstilllowerlhanustomer
equirement.umberf
activitieshat
s
conductedach
rew ower y
8% and
progrcss
er
shift
pef
area
draw
point
ower 1% o
gel
requirement
2.5 raw
oinl
er
month. ased n
Figures
9
and
0 allcre$'
ave
erlormanceower
than aluecquired.
Table ConplianceoiCur€nl
/all& oor
Meshing
Foniig P.ocess
N O
T a r a e t
1
N o o f a c t i v i t i e s
p e r
r h i f t
l 94
1 . 8 0
a'/.
2
P r o
r e
5 s
p e
s h r f t
p e r
a r € a
0
0 7 0 0 6
l 1 %
OreWdV
mo.tul A,NOnid A.llvlly
lA/R
5
shlfl
aE =0(6
i ,."
rrc.w:yAtovA:^d|vllywnp.
8/18/2019 86-138-1-PB
7/10
cElv€y
l\loiEl iAS4 fa
pr.gr-
${
pd
Ea ft
Df,
DP
^Fb
-0 6
Figu€
20.Aialtsis ol MeanPograss
p€r
Activilyby cl#
'
Ho No
Corda .nLnjry&Avrlbb$ry
lrh oOos
'
He
Co@hnon liliy Avalhbiilyth Pms'B
ForanalFing
quipmentconlribution
nthencapable
rocess
fwall&cofmeshing
forming,twillbe
anallz€d
o(elallon
etweonhgutility f boomruck
nd he chi€vomenl
fdraw
olnt
sshownn
Figurc
1,The osults
Thorosn't ufilclentvldence
t 95% evelof
lgnllicanceo
showhat ny
conelalionlllity
availabilityilh
achievemenl
Ho),
able
gives
ther
ntormationhat he
boom
truck tilitylill ow ompare
ilhhe vailability
f his quipment_
codr.tronr:
urlhy, Av.arrbtuiy,YR cht.wm..ri
acntmm.d
Figuf€
l. Tle Corelalion
1alysis lilhys
Achlov€ment
Tabl6 B@m
ruc{Data
Equlprnent
Eq No
Availabllity
l%)
utillty
l%)
Eoom
Tr ck
730031
93%
24%
710044
96%
20%
730045
93v.
37%
J u r n a l f u l
a n a t . m e r
r s k
r o i r i . r
Sased nanalYsisabove,
lcan e oncluded
halthe
ut f
mnlrol
rccess
auses
aveosolve
irsl
o
makeprocessstable
ndthen
ollowed
yinqeasing
e
productivityoachieve
25 un(5draw
olntper
monlhasrequrred.
Figurc 2.
The RoolCaus€
l n€Fble
wall 6 Roor
MeshnsE Foming
P.bess
5.lmDrcve
Wall oofmeshing
orming
she
ongestub
rocess
fdraw
oint
onsfuction
t
l
can
e cduced
the
mean f
durationlwall
&
roolmeshing
onning,
e€n
gel
dmw
point
onstuclion
omplele
faster. ased nanalvsisesult,lheverbreak
t
nose umperand
raw
oint
rea
make
all&
oot
meshing
onning
ut lconkol.
orming
s
on;
ol he
mainasks lwallE
oofwhichan
tabilize
nd
rcducehe
uralionf
wall oof
meshing
oming
For
he urthoranalysis,
twillbe
sed
Pughmatrixo
selecl e best
olution
or each
loblem
s
decision
riteria.
ewilluserileria
s hovin
n able9.
8/18/2019 86-138-1-PB
8/10
8/18/2019 86-138-1-PB
9/10
Iabro 10.
Compadsn
Modular s TEditional
24
l7
18
59
TaUo
1. ro3.Coft
v&&6skHandllng
tsmatfua
olultons
Pughratrlr
By slng
gclslon
dtedas hownn able
.I hent
can e omparcd
hre6 ltemaliveolutions
o
got
Mlchsolullon
illmako
lnonl
oc€ss
€ttor
stng
ugh
Matdx
ceoEe,2005).
y alcutating
he
weightod
um
f
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