0 / 20

Yard Operation Strategyin Container Terminals

Remy Song

1 / 17

1

2

3

Contents

Tactics of Yard Allocation

Kinds of Yard Allocation

Introduction of Stevedoring Methods

Parameters of Yard allocation4

Next Researches5

2 / 17

TWIN-LIFT

1 Introduction of Stevedoring Methods

3 / 17

DOUBLE-PICK

1 Introduction of Stevedoring Methods

4 / 17

TANDEM

1 Introduction of Stevedoring Methods

5 / 17

16

15

14

13

10

9

8

71

18

17

12

11

6

5

2

3

4

DOUBLE CYCLE

1 Introduction of Stevedoring Methods

6 / 17

1 Introduction of Stevedoring Methods

Yard Operation for Double cycle

Load

unload

BUFFER

Case 1. different baysCase 2. the same bay

7 / 17

2 Kinds of Yard Allocation

2-1. Yard Separation

RTG

Export

Export

Import

Import

Import

RMG

Export

Operation Simulator Needed

8 / 17

2

2-2. Assignment for Export

Scattering

LoadKLF

40DC

Unload40DC

LoadJEA

40DC

Unload40DC

Unload40DC

LoadJED

40DC

LoadKLF

40DC

Unload40DC

Kinds of Yard Allocation

9 / 17

2

2-2. Assignment for Export

Concentration

LoadKLF

40DC

UnloadLoadKLF

20DC

Kinds of Yard Allocation

10 / 17

2

2-3. Comparison of Assignment Methodologies

Scattering Concentration

Merits

Advantageousin case of many RMG

to enhance productivity with increasing No. of RMG

operation

to minimize No. of RMG operation to minimize RMG moving time RMG efficiency improvementAdvantageous in case of lots of

vessels and external trucks

Demerits

productivity decline in case of No. of RMG operation

too much RMG moving timeyard interference in case of

many vessels and external trucks

low RMG productivity makes QC productivity low

in case that many RMG canbe operated, not efficient

Remark very efficient for many RMG

operation with low productivity

very efficient for few RMG operation with high productivity

Kinds of Yard Allocation

11 / 17

3

Purpose : to stack export containers with similar weight on a bay

Effect : rehandling / reshuffling minimized when loading on board

Detail : stacking factor and section factor

Composition : Class1(0~12ton), 2(12.1~18ton), 3(18.1~) , etc

3-1. Basis of Yard Allocation

Weight class

Tactics of Yard Allocation

12 / 17

Concept : parameter setting per row to stack specific containers

Candidates : export & T/S, import, restow (shifting), storage

element : container type/size, status (full/empty), weight class,

vessel visit, etc

3-1. Basis of Yard Allocation

Stacking factor

Tactics of Yard Allocation3

Concept : parameter setting per bay to stack specific containers

Candidates : export & T/S, import, restow (shifting), storage

element : container type/size, status (full/empty), weight class,

vessel visit

Section factor

13 / 17

3-1. Basis of Yard Allocation

ex) Stacking factor : weight class, type/size, vessel visit

Tactics of Yard Allocation3

ex) Section factor : POD, status(full/empty)

15 10

16

17

17

11

11

12

20

21

22

135

6

6

7

14

14

15

21

21

22

23

RTM 40 RTM 40 NEXT VOYAGE HAM 40 HAM 40 NEXT VOYAGERTM 40 RTM 40 NEXT VOYAGE

1919 13

14 / 17

3

3-3. yard stacking for efficient on-board loading operation

8

7

6

5 15 21

17

17

18

21

23

25

Tactics of Yard Allocation

18

19

20

21

21

22

18

20

23

24

25

19

20

22

24

25

18

20

20

21

22

18

19

20

21

19

15 / 17

4 Parameters of Yard Allocation

RMG Coverage Value : high bonus on the bays within the coverage of

RMG with few work orders for discharging containers)

Double Cycle discharge : High bonus on the bays in consideration of

YT progress direction to assign loading containers

RMG idle time : Bonus assignment to RMG in direct proportion to idle time

RMG busy : High penalty assignment to busier RMG

RMG distance : High penalty assignment to more distant RMG

Gate In/Out : High penalty assignment to RMG with has more orders for

external trucks(gate in/out)

Stacking / Section Factor : High penalty assignment to bays which

tacking / section factor can be easier broken

Automated assignment for discharge/load

16 / 17

4 Parameters for Yard Allocation

RMG Passing : High penalty assignment to bays which has higher stacks

to prevent incident when spreaders passing

RMG Productivity : High penalty assignment to RMG of lower productivity

Automated assignment for discharge/load

Vertical or Horizontal Stack: empty stack and tier value

Weight Choice: benchmark for allowance of weight discrepancy between

upper and lower container

Yard Stacking

Quay crane Y/T Pooling Double cycle

17 / 17

5 Next Researches

Automated RMG Optimizing

Development of More Parameters

Y/T Pooling Optimizing in Line with Yard

Simulator for RMG operation

YT double cycling Optimizing in Yard&Vessel

Yard Operation Strategyin Container TerminalsSlide Number 2Slide Number 3Slide Number 4Slide Number 5Slide Number 6Slide Number 7Slide Number 8Slide Number 9Slide Number 10Slide Number 11Slide Number 12Slide Number 13Slide Number 14Slide Number 15Slide Number 16Slide Number 17Slide Number 18