LEAN CONSTRUCTION PRINCIPLES AND RAILWAY MAINTENANCE

PLANNING

Daria Ivina

PhD student, Lund University, Sweden

daria.ivina@tft.lth.se

Nils O. E. Olsson

Professor, Norwegian University of Science and

Technology, Norway

nils.olsson@ntnu.no

Background – Organizational model

2

5 contractor companies:

• Infranord

• Strukton Rail

• NRC i Sverige

• Infratek Sverige

• BDX Företagen

34 basic mantenance contracts

3

37869

73531

20000

30000

40000

50000

60000

70000

80000

20000

22000

24000

26000

28000

30000

32000

34000

36000

38000

40000

2015 2016 2017 2018 2019

Planned maintenance activities

Planned working hours

Background – Track works

Purpose and Method

4

Purpose - study maintenance planning processes based on Last Planner framework

Method

• Literature study

• Interviews

• Data analysis

Lean philosophy

5

1. Value for customer

2. Value stream

3. Flow4. Pull

5. Perfection

Lean

Last Planner® System

Percentage Plan Completed

(1) unproductive maintenance

(2) waiting for maintenance resources

(3) centralized maintenance

(4) poor inventory management

(5) unnecessary motion

(6) poor maintenance

(7) ineffective data management

(8) underutilization of resources

6

Wastes in Maintenance

Arkivbild Bild: Magnus Hjalmarson Neideman SVDTT Bild

Planninglevels

7

STRATEGICAL PLANNING

ANNUAL PLANNING

DETAIL PLANNING

OPERATIONAL

PLANNING

Barriers in Lean implementation

8

• lack of knowledge about lean principles

• knowledge management

• inefficiency in source planning

• lack of trust

Percentage Plan Completed

• Southern Sweden

• 4 companies A, B, C and D

• 1 month (April 2019)

• Time on track planned vs used

9

-6%

-29%

-40%

94%

71%

100%

60%

+24%

-50 0 50 100

A

B

C

D

% time not used

% used possesions

% over used

Conclusions

10Arkivbild Bild: Magnus Hjalmarson Neideman SVDTT Bild

• Last Planner principles have a potential to improve effectiveness in maintenance processes

• Establishing changes to contractors work routine based on lean principles may face some barriers

• The data available at Trafikverket can be utilized to analyze the performance of contractors

11

Thank you for your attention!Questions?

daria.ivina@tft.lth.se

Study is a part of BANDAT project supported by the Swedish Transport Administration (Trafikverket)