Singapore Airport Terminal Services - NUS Engineering€¦ · Singapore Airport Terminal Services...
1
ok Introduction Singapore Airport Terminal Services (SATS) is the leading provider of integrated ground handling and airline catering services at Singapore Changi Airport. This project focused on the export handling processes at SATS Air Freight Terminal 5 (AFT 5). Objective To balance the entire export handling process and to achieve timely release of Unit Loading Devices (ULDs) such that the utilization rate of the Staging Area is at an optimum level. Export Handling Process Map •Export cargo is packed together at Build-up Areas (BUA) to form ULDs. •ULDs from BUA Sector B and D are transferred by Elevated Transfer Vehicles (ETVs) into Queue Lanes. •Transfer Vehicles (TVs) then release these ULDs onto Pallet Dollys (PDs), to be towed to the aircraft or Staging Area if the loading window is not open. •ULDs from BUA Sector D can also be transferred by Motorized Control Panel (MCP) before being towed to the aircraft or Staging Area. •Transhipment ULDs can enter AFT 5 to be processed similar to built-up ULDs or be towed directly to aircraft or Staging Area. Optimizing Cargo Operations for Singapore Airport Terminal Services Methodology •A mathematical programming model was developed to balance the export handling processes. •Results obtained from this model were then generalized and verified using simulation. a) Mathematical Programming Model •Discrete time intervals of 15 minutes were used in this model. •Capacity of ETVs, TVs, MCP and queue lanes were calculated based on past data and were used as resource constraints. •Objective: Minimize total system cost (holding cost and late cost) •The model was built and solved using ILOG OPL Development Studio. Timeliness of ULDs chart •Most of the ULDs were released on time as opposed to the extreme cases of being released too early or too late for their flights. •Results satisfied the constraints, and the system was still able to cope with the demand. •The results were generalized into simple rules, so that SATS can implement them on the ground. Department of Industrial & Systems Engineering Systems Design Project AFT 5 To Aircraft / Staging Area Motorized Control Panel Build-up Area Sector B Elevated Transfer Vehicle 2 & 3 Queue Lanes Transfer Vehicle 2 & 3 Build-up Area Sector D Transhipment b) Simulation •The generalized rules were verified using simulation. •Using the iThink software, two versions of the simulation model were built. •Version 1: Model existing operating practices in SATS •Version 2: Simulate processes based on derived rules iThink model (Version 2) •The results from both versions were compared. •The results showed improvements to the system when the derived rules were used. Group Members: Ng Guo Jun, Ding Yi Xin , Kenny Kuek, Lim Wei Zi, Jordan Tan Supervisors: Asst Prof Ng Tsan Sheng Adam, Assoc Prof Tang Loon Ching 0 5 10 15 20 25 30 35 40 45 1:00 2:00 3:00 4:00 5:00 6:00 7:00 8:00 9:00 10:00 11:00 12:00 13:00 14:00 15:00 16:00 17:00 18:00 19:00 20:00 21:00 22:00 23:00 0:00 missed flight urgent on time early Number of Pallets
Transcript of Singapore Airport Terminal Services - NUS Engineering€¦ · Singapore Airport Terminal Services...
ok
Introduction
Singapore Airport Terminal Services (SATS) is the leading provider of integrated ground handling and airline catering services at Singapore Changi Airport.This project focused on the export handling processes at SATS Air Freight Terminal 5 (AFT 5).
Objective
To balance the entire export handling process and to achieve timely release of Unit Loading Devices (ULDs) such that the utilization rate of the Staging Area is at an optimum level.
Export Handling Process Map
•Export cargo is packed together at Build-up Areas (BUA) to form ULDs.•ULDs from BUA Sector B and D are transferred by Elevated Transfer Vehicles (ETVs) into Queue Lanes.•Transfer Vehicles (TVs) then release these ULDs onto Pallet Dollys (PDs), to be towed to the aircraft or Staging Area if the loading window is not open.•ULDs from BUA Sector D can also be transferred by Motorized Control Panel (MCP) before being towed to the aircraft or Staging Area.•Transhipment ULDs can enter AFT 5 to be processed similar to built-up ULDs or be towed directly to aircraft or Staging Area.
Optimizing Cargo Operations for Singapore Airport Terminal Services
Methodology
•A mathematical programming model was developed to balance the exporthandling processes.•Results obtained from this model were then generalized and verifiedusing simulation.
a) Mathematical Programming Model
•Discrete time intervals of 15 minutes were used in this model.•Capacity of ETVs, TVs, MCP and queue lanes were calculated based onpast data and were used as resource constraints.•Objective: Minimize total system cost (holding cost and late cost)•The model was built and solved using ILOG OPL Development Studio.
Timeliness of ULDs chart
•Most of the ULDs were released on time as opposed to the extreme casesof being released too early or too late for their flights.•Results satisfied the constraints, and the system was still able to copewith the demand.•The results were generalized into simple rules, so that SATS canimplement them on the ground.
Department of Industrial & Systems EngineeringSystems Design Project
AFT 5
To Aircraft / Staging Area
Motorized Control Panel
Build-up Area Sector B
Elevated Transfer Vehicle 2 & 3
Queue LanesTransfer Vehicle
2 & 3
Build-up Area Sector D
Transhipment
b) Simulation
•The generalized rules were verified using simulation.•Using the iThink software, two versions of the simulation model werebuilt.
•Version 1: Model existing operating practices in SATS•Version 2: Simulate processes based on derived rules
iThink model (Version 2)
•The results from both versions were compared.•The results showed improvements to the system when the derived ruleswere used.
Group Members: Ng Guo Jun, Ding Yi Xin , Kenny Kuek, Lim Wei Zi, Jordan TanSupervisors: Asst Prof Ng Tsan Sheng Adam, Assoc Prof Tang Loon Ching
0
5
10
15
20
25
30
35
40
45
1:0
0
2:0
0
3:0
0
4:0
0
5:0
0
6:0
0
7:0
0
8:0
0
9:0
0
10
:00
11
:00
12
:00
13
:00
14
:00
15
:00
16
:00
17
:00
18
:00
19
:00
20
:00
21
:00
22
:00
23
:00
0:0
0
missed flight urgent on time early
Nu
mb
er
of
Pal
lets
