Asset Management of Ageing Infrastructure

Transcription

1 Asset Management of Ageing Infrastructure Asset Management Symposium TU Delft December22, 2016 Leo Klatter

2 Introduction Ministry of Infrastructure and the Environment, the Netherlands Major Projects and Maintenance senior advisor Asset Management Leo Klatter 2

3 Outline Ageing assets Prognosis budget need Replacement and Renovation Program Conclusions 3

4 Assets manages three National Infrastructure Networks National Highways network 4

5 Development Traffic Fifties 20th century Now AM Symposium TU Delft December

6 Age distribution bridges 6

7 7 AM Symposium TU Delft December

8 2007 wakeup call Hollandse Brug, Incident with great impact on network performance 14 months closed for trucks 8

9 Malfunction of installations, case Spijkenisserbrug 9

10 End of service life; problem or opportunity? At first look big problem - great change for improvement: The need for replacement of many installations in structures like tunnels and shipping locks Innovative perspectives where structures are modernized; New technology can provide better performance at lower cost and energy consumption can be reduced; This can strengthen the connections with the natural environment as well as the social environment in the cities. Even more opportunities arise when we take this to a network level. The opportunity to rethink the functions and features of the networks. 10

11 Program for replacement and renovation Three new elements were introduced: A Prognosis Report with a forecast of the need for replacement and renovation up to 2050 has been developed; The program replacement and renovation is integrated in the investment program. Including a process for decisions by the ministry has been set up; Central coordination of the executional programs is implemented in the organization. 11

12 Prognosis costs replacement & renovation Up to / / 2030 from 2031 Program in execution Inspections max t+10 year Issues Statistical analysis 12

13 Statistical analysis Concrete bridges and viaducts Life time demolished objects: Relative low life time 89% functional reasons Increasing part non reusable objects in renewal and extension Life time objects still in use Majority of objects Increasing life time Results: : 75 years 2011: 80 years 2015: 80,4 years AM Symposium TU Delft December

14 Issues national highways network Tunnels: Sofware update Installations Midlife renovation 14 AM Symposium TU Delft December

15 Example: midlife renovation tunnel 15

16 Research approach issues Problem definition Working assumption Mid-term prognosis Inspection and research Update working assumption Development solutions Executional program 16 AM Symposium TU Delft December

17 Results 2014 (edition 2016 in production) 17 AM Symposium TU Delft December

18 Experience running program First projects technical approach: Restore the original situation by either replacement or renovation of the objects in the scope; extended maintenance This resulted in problems: Neglected requirements from stakeholders came up during the preparation of the projects; Technical complications resulted in budget overruns. Conclusion: different type of projects, need a dedicated process: A two-step decision process is introduced with step 1 the intake and step 2 the project assignment; Integrated in the investment program: Asset manager, develops options, asset owner, Ministry decides 18

19 Step 1: rough categorization 1. Simple substitutions of the functionality, no need to investigate changes 2. Relatively limited need for change of functionality and/or additional requirements from stakeholders. 3. Complex cases with respect to change in functionality or stakeholders requirements. The first two categories will be prepared within the program for replacement and renovation. The third will follow the same procedures as investments for new infrastructure. 19

20 Step 2; broad range of solutions Seven alternative solutions have to be considered: 1. Do nothing 2. Intensified maintenance 3. Restricted use 4. Renovation 5. Replacement by comparable structure with identical functionality 6. Replacement by comparable structure with up-grade in functionality 7. Something completely different; for example replace a movable bridge by a tunnel Life Cycle Cost assessment to compare solutions /scenario s of combinations of solutions 20

21 Wilhelminalaan A15 21 AM Symposium TU Delft December

22 Under construction: Drongelens kanaal A59 22 AM Symposium TU Delft December

23 Conclusions Past century: Many new structures were built in a green field in the expanding networks; Now: Networks are developed within their existing borders; Structures are reaching their end of service life; This calls for new ways of thinking and adequate procedures to keep up the network performance, when successful reward is: better performance at lower costs and sustainability will benefit. Necessary: Reliable long term prognosis; Convincing story policy makers to allocate sufficient budgets; An effective process that can deal with the uncertainties and creates flexibility is needed. 23

24 Thank you for your attention 24