LEAD TIME & INVENTORY REDUCTION
IN APPAREL SUPPLY CHAIN
Team Synergy
Abhishek Kumar
Mangala M
Rashmi Rao
Jisna P Gopi
ABOUT THE COMPANY
•Manufacturing arm of Madura
Garments having brands like
Louis Philippe , Van Heusen ,
Allen Solly and Peter England
•It comprises of 4 factories
located in Bangalore , with a
total employee strength close
to 3000.
•The product range offered is
men’s and women’s formal –
Shirts , Trousers and Suits
with annual volumes of 43.6
Lakh garments.
Aditya Birla
Group
AB Nuvo
Madura
Garments
Madura
Clothing
Vision: “To be a global benchmark for apparel industry in
manufacturing and innovation providing competitive advantage to
stake holders”
Note:-To understand the apparel supply chain in brief which will help to understand the project better
APPAREL SUPPLY CHAIN
NEED FOR PROJECT
Nowelldefinedandscientificreplenishmentmodelandstockingpolicy
Stagnatingsalesgrowthyear-on-yearbasis
Highfinishedgoodsinventory
Increaseindiscountedsalesyearonyearleadingtoprofiterosion
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Q
t
y
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i
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c
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LP Core FG Sales : FY08-10
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LP Core FG Inventory : FY08-10
FG inventory in the range of
5000pcs while Retail sales in
400pcs per month, hence
carrying 10 months more
inventory
Due to such high FG inventory
level, cash flow for business is
blocked and discounted sales
increasing to improve it
PROJECT CHARTER
BusinessCase:TotalLeadtimeof
Apparelsupplychainwas130days
andtherehasbeenno
replenishmentleadingtohighout-
of-stockrate.Theinventorylevel
wasveryhighcarrying9months
inventory.
Thisthrewuptremendouspotential
forimprovingtheleadtimeand
inventoryreduction
Scope:Fabricprocurementto
RetailSales
Relation with business case , approach , scope , CTQ’s and
benefits were finalized in the charter
SIPOC
Fabric
procurement
from mill
Fabric
procurement
from mill
Fabric
storage at
factory
Fabric
storage at
factory
Garment
mfg at
factory
Garment
mfg at
factory
FG
storage at
WH
FG
storage at
WH
Retail
store
replenish
Retail
store
replenish
Retail
sales
Retail
sales
Core
CORE REPLENISHMENT SYSTEM
Factory
Warehouse
Retail Store
Consumer
C
R
S
(
P
u
ll S
t
r
a
t
e
g
y
)
Fabric Mills
Core products would be managed using continuous replenishment at FG as well as fabric stages …
CORE REPLENISHMENT SYSTEM
Core products would be managed using continuous replenishment at FG as well as fabric stages …
Orders are
Aggregated
Order
Garment
Production
PO
Preparation
Sends
the order
WO is
generated
WO
Supplies
Fabric PO
Fabric
Order
Details
Fabric
Status
Garments
Pending
Order File
Warehouse Factory
Purchase
Supplier
Customer
FG Stocks,
WIP
Levels
Fabric Stocks
In-Transit, Fabric
RoP Levels
Fabric
Avb.
yes
no
Fulfill
CTQ TREE DIAGRAM
Reduction of
Leadtimeand
inventory in
ApparelSupply
chainforCore
Replenishment
System
Garment Manufacturing
REWORK%
RECUTTING%
MANUFACTURING LEAD TIME
Finished Goods INVENTORY (DAYS)
Fabric LEAD TIME (DAYS)
Retail RETAIL SALES (PCS)
Critical To Quality
Characteristics (CTQ)
Operational
Definition
Measure
Current
Status
CTQ
Specification
Defect
Definition
KANO
Status
1. FABRIC PROCUREMENT
LEAD TIME (DAYS)
FABRIC LEAD TIME
FROM PO CREATION
TO DELIVERY AT
FACORY STORES
105 Days <15 Days > 15 Days MUST BE
2. MANUFACTURING LEAD
TIME (DAYS)
TIME FROM WO
CREATION TO
DELIERY AT
FACTORY
WAREHOUSE
18 Days <12 Days > 12 Days MUST BE
3. FINISHED GOODS
INVENTORY IN WH (DAYS)
FINISHED GOODS
INVENTORY IN DAYS
271Days < 60 Days > 60 Days MUST BE
4. RETAIL SALES (PCS) RETAIL SALES IN
PIECES
400 Pcs >500 Pcs < 500 PCS MUST BE
5. RECUTTING (%) PANELS
RECUTTING
4% <3% >3% LOWER THE
BETTER
BATCH RECUTTING
3% <1% >1%
6. REWORK (%) END OF LINE 7.83% < 7% >7% LOWER THE
BETTER
FQC 1.73% <5% >5%
The project objective (Y) is addressed by focusing on the Must Be” CTQ’s (y’s)
identified as shown above
CTQ TABLE
MILESTONE
GANTT CHART
Jun’10Jul’10 Aug’10 Sep’10 Oct’10 Nov’10 Dec’10 Jan’11
DEFINE
ProjectCharter
SIPOC
CTQ Tree Diagram
MEASURE
As-is CTQ Status
APPROACH/ ANALYSIS
Cause & Effect Diagram
FMEA
DEPLOYMENT/IMPROVE
NVA Identification & stratification
Setting up section wise WIP Norms
Single piece clearance on dailybasis
Developingsystem to monitor online
ASSESSMENT & REVIEW/ CONTROL
Implementing control mechanism
Sustenance (Review & Assessment)
Replication
CTQ 1: FABRIC LEAD TIME REDUCTION AT FABRIC MILL
The Strategic supplier relationship management is required to
Ensure the strategic partnership with fabric mills
Ensure reduced fabric lead time by Vendor managed inventory
Ensure improved service levels for fabric lead time and quality
Ensure building base stock to service peak season demand
ANALYZE
An internal brainstorming
session, helped to narrow
down the Focus area for
Deployment in spoke from
“12 Spoke solution design”
with strong core
CONTROL
After establishing Strategic supplier
relationship, critical vendors identified
based on following parameters for
rationalization:
Geographic Location
Delivery, Quality, Cost
VMI has been adopted for critical
vendors by providing themQuarterly
projectionsto deliver stock on-demand
After implementing VMI, due to
reduction in Fabric lead time and
improved service levels, base stock
was built to service
ESCALATION MATRIX
LEAD TIME
DELAY
VENDOR/
INCHARGE
PURCHASE
MANAGER
SOURCING
HEAD
BRAND
HEAD
14 Days
10 Days
7 Days
2 Days
Safety Stock
Reorder Point
CTQ 2 : GMT MFG LEAD TIME REDUCTION AT FACTORY
The reduction in Garment manufacturing lead time is done by
Ensure timely delivery of finished goods at warehouse against SLA
Identifying potential causes for high manufacturing lead time
Identifying root causes by using FMEA
Implementing improvement solutions for those root causes
Implementing controls to ensure that implemented solutions sustain
DIAGNOSING POTENTIAL ROOT CAUSES
An internal brainstorming
session, helped to narrow
down from 52 x’sto more
likely root causes for further
analysis
Single pc clearance
Further, FMEA was carried out to help in prioritizing
the potential root causes
FMEA FOR PRIORITIZING POTENTIAL ROOT CAUSES
Cause
Probability
of
Occurrence
Severity Of
Conseque
nce
Difficulty
of
Detection
(A)
Probability
of
Occurrenc
e
(B)
Consequen
ce
(C)
Detection
Risk
Priority
No. (RPN)
(High / Medium / Low)
Rating (1-6-9) 1 = lowest, 6 =
medium, 9 = highest A x B x C
Lackof work aid Low MediumMedium1 6 6 36
Mismatchingof materialMedium MediumLow 6 6 1 36
Fabric Defect & Shade
variation Medium High Low 6 9 1 54
Improper method due to
lack of adherance to SOPLow High Medium1 9 6 54
Planning procedure
leading to improper
release of work orders Medium High Medium6 9 6 324
High sectionalWIP due
to lack of adherance to
WIP Norms High High Medium9 9 6 486
Delay in single piece
clearance due to lack of
supervision High High High 9 9 9 729
2 main causes having highest RPNs were selected to work on
High RPN root
causes 486 and
729 respectively
are identified and
action taken to
reduce it
IMPROVEMENT
Delay in single piece clearance due to lack of supervision
Tracking format implemented for
tracking down the single piece in
the section
Operators and supervisors were
educated to clear single piece
Daily review for deviations
Results Statistical Validation
SINGLE PIECE CLEARANCE TRACKING
2-Variance test was done and since p-
value (0.498) is greater than 0.05,
there is no significant change in the
variation
2-sample t-test was done and since
the p-value (0.002) is less than 0.05,
there is significant reduction in
single piece clearance time.
IMPROVEMENT
High Net WIP due to lack of adherance to WIP norms
Section wise norms were fixed
based on the daily production
of section
Implementation of pull system in
WIP based WO release
Daily review for deviations
2-Variance test was done and since p-
value (0.587) is greater than 0.05,
there is no significant change in the
variation
2-sample t-test was done and since
the p-value (0.006) is less than 0.05,
there is significant reduction in Net
WIP (pcs)
Results Statistical Validation
FMEA FOR RESULT VALIDATION
Failure Mode Effect Analysis (FMEA) for Validating the solutions.
Cause Probabi
lity
Severit
y Of
Conse
quence
Difficul
ty of
Detecti
on
(A)
Poten
tial
(B)
Conse
quenc
e
(C)
Detect
ion
Risk
Priority
No.
(RPN)
Implemented Preventive
Action
(A1)
Proba
bility
(B1)
Severi
ty
(C1)
Detec
tion
Residu
al No.
(High / Medium / Low) Rating (1-6-9) 1 =
lowest, 6 = medium, 9 =
highest
A x B x
C
Rating (1-6-9) 1 =
lowest, 6 = medium, 9
= highest
A1 x
B1 x
C1
Lackof work aid
Low MediumHigh 1 6 9 54 1 6 9
54
Mismatchingof
material
MediumMediumLow 6 6 1 36 6 6 1 36
Fabric Defect &
Shade variation
Medium High Low 6 9 1 54 6 9 1 54
Improper method
due to lack of
adherance to
SOP
Low HighMedium 1 9 6 54 1 9 6 54
Planning
procedure
leading to
improperrelease
of work orders
Medium HighMedium 6 9 6 324 Implementation of pull
system, WIP based work
order release system
6 1 6
36
High sectional
WIP due to lack
of adherance to
WIP Norms
High HighMedium 9 9 6 486 Establishingsection wise
WIP norms and ensuring
adherance to it
1 9 6
54
Delay in single
piece clearance
due to lack of
supervision
High High High 9 9 9 729 Establishingsingle piece
clearance tracking sheet
and ensuring adherance to
it
1 9 6
54
With the implemented
solution RPN of root
causes came down
from 486 and 729 to
54 respectively which
validates the
effectiveness of
solution
Sheet to record details of all
alterations of same product,
different batches
Single piece clearance of monitoring on a day to day basis
Regular training to operators on clearing single pieces on top-priority
On-site board for supervisors to keep tracking single pieces and Section wise WIP
Holding dispatch till 100% single pc clearance
Weekly reviews by Production Manager for ensuring adherance to Section wise WIP
norm and single pc clearance
CONTROL
On-site board for production
monitoring , style description
and daily wo clearance
Standard operating
procedures in all sections to
ensure the process adherence
BENEFITS : MFG LEAD TIME REDUCTION
Two-Sample T-Test and CI: After Tpt time, Before Tpt time
Two-sample T for After vs Before
N Mean StDev SE Mean
After 4 12.50 2.65 1.3
Before 9 29.44 6.37 2.1
Difference = mu (After) -mu (Before)
Estimate for difference: -16.9444
95% upper bound for difference: -12.4122
T-Test of difference = 0 (vs <): T-Value = -6.78
P-Value = 0.000 DF = 10
2-Variance test was done and since p-
value is greater than 0.05, there is no
significant change in the variation
2-sample t-test was done and since
the p-value is less than 0.05, there is
significant reduction in throughput
time.
Reduction in Suits average manufacturing lead time
from 18 days to 12 days (0.4 times improvement)
CTQ 3: FG INVENTORY REDUCTION AT WAREHOUSE
The Warehouse replenishment system for finished goods to warehouse required to
Ensure work orders are created to fill the inventory gap at warehouse
Ensure that replenishment is aligned to sales as per pull model
Ensure that inventory carrying cost of finished goods is reduced
Warehouse replenishment approach to provide the brands with a competitive advantage of
Replenishment Model, which characterizes
Planning Horizon of fortnight with Weekly Wave Model of Work Ordering and Delivery cycle
IMPROVE
Factory
Warehouse
Wo Creation
Pre-production
activity (1
Days)
11 Days
against
SLA
Wo Release
Forecasting/
WH Stock Gap
against Norm
Every
Monday
Productio
n Plan for
filling Gap
Fabrics &
Trims in-stock
Every
Tuesday
1 Day
Every
Tuesday
Entoma
Warehouse
(Retail)
2 DaysRetail
Store
1 Day
IMPROVE (Contd)
Work ordering cycle: Weekly (on every Tuesday),
Delivery cycle: 12 working days from day of work order creation for blazers/
Suits
MOQ per style code :10 pcs (based on cutting and marker laying efficiency)
Fabric Norm: 1 month of sales
Warehouse Norm: 1 month of sales
Assessment Mechanism (Daily)
OTIF
Lead Time
Review Mechanism (Quarterly)
WH Inventory
Fabric Inventory
Service level Agreement
0
50
100
150
200
250
300
May Jun Jul Aug Sep Oct
J
u
n
+
J
u
l
R
e
q
u
i
r
e
m
e
n
t
B
u
i
l
d
i
n
g
S
a
f
e
t
y
S
t
o
c
k
B
u
i
l
d
i
n
g
MF&L INVENTORY REPLENISHMENT
MODEL (MONTH ON MONTH) -AW
GAPREPLENISHMENT
CONTROL
Based on the Scenarios,
work order were created to
replenish the gap in
warehouse inventory
Daily Status of Work orders
were sent to brands for
ensuring the transparency in
work order execution
ESCALATION MATRIX
LEAD TIME
DELAY
SUPERVISORPRODUCTION
MANAGER
FACTORY
MANAGER
HEAD OF
MFG
4 Days
3 Days
2 Days
1 Day
For process, Smart Transactional
Excel Macros were developed for:
Monitoring Retail Sales
Monitoring Retail Inventory
Monitoring WH Inventory
Monitoring Gap in WH inventory
against Norm due to retail sales
Work order need to be created
based on gaps on weekly basis
To improve the transparency in work
order execution as control sheet, Daily
status is sent to all stakeholders
Escalation matrix established for
handling lead time delays
BENEFITS : FG INVENTORY REDUCTION
Two-Sample T-Test and CI: After Inventory, Before Inventory
Two-sample T for After Inventory vs Before Inventory
SE
N Mean StDev Mean
After Inventory 7 72.4 28.4 11
Before Inventory 5 208.6 68.8 31
Difference = mu (After Inventory) -mu (Before Inventory)
Estimate for difference: -136.171
95% upper bound for difference: -66.697
T-Test of difference = 0 (vs <): T-Value = -4.18
P-Value = 0.007 DF = 4
2-Variance test was done and since p-
value is greater than 0.05, there is no
significant change in the variation
2-sample t-test was done and since
the p-value is less than 0.05, there is
significant reduction in inventory
Reduction in Suits inventory from 9 months to 2
months (4.5 times improvement)
CTQ 4: SALES IMPROVEMENT AT RETAIL STORE
The Retail replenishment system for finished goods to retail stores is required to
Ensure timely delivery of finished goods at retail store against SLA
Ensure STO are created to fill the inventory gap at retail stores
Ensure that replenishment is aligned to sales as per pull model
Ensure that sale of finished goods is improved
Retail replenishment approach would ensure that local customer preferences as well as
brand’s targeted sales is maintained...
IMPROVE
Provide information on store traffic, demand patterns, gaps in merchandise
Provide with weekly control reports to monitor inventory and store look
IMPROVE
Retail management system -Micro
strategy and Business warehouse
was implemented in year 2009 to
provide transparency across the 68
retail stores of LP
Store Sales
Store Inventory
In-transit inventory
To replenish retail stock in northern
and western region, couriers are
used to reduce replenishment time
within 3 days
All India One Stock (AIOS)
system deployed for cross-
docking, one retail store to another
retail store
Micro strategy software to
monitor store sales,
inventory
Business warehouse
software to monitor in-transit
inventory and AIOS system
CONTROL
ESCALATION MATRIX
OUT OF
STOCK
VENDOR/
INCHARGE
RETAIL
MERCHANT
RETAIL
HEAD
BRAND
HEAD
4 Days
3 Days
2 Days
1 Day
For process, Out-of-stock and Transit
time is monitored and reviewed on daily
basis based on:
Retail Sales
Retail Inventory
Retail inventory norm
Monitoring gap in Retail inventory
against Norm
Stock transfer order need to be
created based on gaps
Escalation matrix established for
handling transit time delays
Store Transit
Time (Days)BeforeAfter
%
Improvement
APK 2.56 1.38 46.09%
TN/ KERALA 2.45 1.28 47.76%
WEST 6.28 2.96 52.87%
NORTH 7.43 3.21 56.80%
AVERAGE 4.68 2.21 52.83%
(INPCS)
Month Norm
Actual
Stock
Out-of-
stock
Sales
Loss %
Jul 1367 932 435 32%
Aug 1367 830 537 39%
Sep 1367 1067 300 22%
Oct 2734 2568 166 6%
Nov 2734 2876 0 0%
Dec 2734 2754 0 0%
BENEFITS : SALES IMPROVEMENT
Two-Sample T-Test and CI: Before Sale, After Sale
Two-sample T for Before Sale vs After Sale
SE
N Mean StDev Mean
Before Sale 12 174.7 43.0 12
After Sale 3 717.7 38.7 22
Difference = mu (Before Sale) -mu (After Sale)
Estimate for difference: -543.000
95% upper bound for difference: -482.904
T-Test of difference = 0 (vs <): T-Value = -21.26
P-Value = 0.000 DF = 3
2-Variance test was done and since p-
value is greater than 0.05, there is no
significant change in the variation
2-sample t-test was done and since
the p-value is less than 0.05, there is
significant improvement in sales
Increase in Suits retail sales from avg 400 pcs sales to
avg 785pcs in peak season(2 times improvement)
OVERALL BENEFIT
FINANCIAL BENEFIT FOR SUITS & BLAZER IN RETAIL CHANNEL
BUDGETED SALES PROJECTION (JAN’11-DEC’11) –3375 pcs (Rs. 1.68 crores/ Annum)
DUE TO RETAIL REPLENISHMENT, 40% REDUCTION IN BUDGETED SALES LOSS
NOV’10-JAN’11 ACTUAL SALES IMPROVEMENT –800 PCS, ACTUAL EXTRA REVENUE –Rs20 Lacs
EXPECTED SALES IMPROVEMENT DUE TO RETAIL REPLENISHMENT –1350 pcs/ Annum
EXPECTED PROFIT DUE TO SALES IMPROVEMENT–Rs33.6 Lacs/ Annum (Profit@Rs 2500/pc)
NET LEAD TIME REDUCTION
(FABRIC + MANUFACTURING + RETAIL REPLENISHMENT) LEAD TIME
BEFORE, 105 + 18 + 7 (Max in case of Delhi) –130 Days
AFTER, 15+12+3 (Max in case of Delhi) –30 Days
IMPROVEMENT IN LEAD TIME –4 TIMES
FUTURE ROADMAP
Automating the mechanism for forecasting Channel wise sales
trend by identifying the best tool among the several tools by Q1
Automating the process of setting the inventory normacross the
supply chain quarterly by Q1
Automating the transaction, which triggers the stock transfer order,
work order for style codes and purchase order for fabric codes by Q2
Increasing the Scope of this project to different products and
channels
BRAND CHANNEL PRODUCT EXP TIME
LP RETAIL S&B
LP TRADE S&B Q1
LP RETAIL SHIRT Q2
LP TRADE SHIRT Q2
LP RETAIL TROUSER Q1
LP TRADE TROUSER Q1
VH RETAIL S&B Q1
VH TRADE S&B Q1
VH RETAIL SHIRT Q1
VH TRADE SHIRT Q1
VH RETAIL TROUSER Q2
VH TRADE TROUSER Q2