Surveillance concepts from a maintenance perspective

Surveillance concepts from a maintenance perspective BaneBranchen May 21st, 10:45

Introduction Siemens in Denmark Almost 7.000 empl. Mobility 150 empl., ¼ in maintenance.

Maintenance perspective! I am not R&D therefore there might be some questions which I can not answer.

In DK: ATC, STM-DK, Remote controlling, RS (EG, S-tog, Desiro), S-bane, etc.

What will I tell you about? Who is the audience? Questions

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2013-05-21

Jesper K. Nilson

Mobility Division, Siemens Denmark

Different ways of performing maintenance  Preventive:  Time based.  Based on cycles / km.  Corrective / run-to failure:  Reported by operator.  Reported by the system itself.

Need some kind of system surveillance

 Predictive (Condition based):  Based on system surveillance.

Requirement for predictive maintenance: In time – shall not be a corrective measure (short time for a MMI, longer time in advance for point machines).

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Jesper K. Nilson


Vision for perfect Maintenance  A system with full availability.  All preventive maintenances are performed according to plan.  No corrective maintenance.  Predictive maintenance based on system surveillance.  Optimizations on preventive maintenance based on system input.  System availability high secured by redundancy on weak spots or parts with major impact.  Typical indicators for predictive maintenance:  Temperature levels.  Duration of a specific action.  Server surveillance (power supply, disk usage, core temp, reboot etc.).  Network load.  System usage.  Failure in one part of redundant systems.

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Jesper K. Nilson


The two cases from Copenhagen S-bane Siemens is one of the major suppliers for the Copenhagen S-bane:  S-Trains in consortium with Alstom.  Powersupply.  Traincontrol wayside and OB (HKT).  Present OCS DIC-S.  Signalling Programme – CBTC system incl. Interlocking systems, CBTC, TMS, Network and facility systems.

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2013-05-21

Jesper K. Nilson


DIC-S The first case used is the existing OCS for the S-bane called DIC-S, which was taken into use in the period 2003 to 2006. There is almost no automatic surveillance in this solution and predictive maintenance is performed on the basis of service reports and historic statistical data.

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Jesper K. Nilson


DIC-S Principles  Interface to 72 interlocking systems via 72 RTU’s. F je r n s ty r in g s s y s te m C e n tr a l/D r ifts s y s te m

 OCS:  8 redundant servers.  8 operator MMI.  Internal network.

B e tje n in g s p la d s 1 til 1 2

B e tje n in g s p la d s 1 3 & 1 4

V IC O S L A N

A D M

C O M 1 /C O M 2

R e c o rd S e rv e r

O n lin e k ø r e p la n V IC O S L A N

F ro n te n d 3 O f f lin e k ø r e p la n

F ir e w a ll

F ro n te n d 2 F ro n te n d 1

D a ta w a re house F ir e w a ll A b o n n e n te r

1 0 0 M B it / s

1 0 0 M B it / s

B S W A N

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2013-05-21

Jesper K. Nilson


DIC-S “Surveillance” concepts Primary system input for Maintenance purpose:  KONF Cockpit Status of all main components and sub-stations.  RTU status / log  Alarmliste  Betjeningsprotokol (Operator / System logs)

 Weekly report (log) Weekly reporting on server disk usage, memory, automatic restarts, coredumps and sub-station availability Page 8

2013-05-21

Jesper K. Nilson


DIC-S Examples of fault handling Fault: RTU (Sub-station) not online  The operator will see missing indications (blue icons) on screen and orders can’t be given. The operator might look into “Alarmliste” for supplementary input.  The operator will contact Siemens Service Engineer, which will look into KONF and analyze the reason for the fault. Typical transmission network or RTU itself. Fault: Saved by redundancy  Not reported automatically to a Service technician.  This will be visible when looking at alarmlist, KONF or the weekly report.

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Jesper K. Nilson


DIC-S Conclusion on maintenance based on surveillance A very detailed knowledge of the system is needed to analyze log files and in best case forecast any predictive maintenance. Besides the limited amount of time based preventive maintenance all performed maintenance is corrective.

The system redundancy will reduce number of the faults.

The system was designed almost 12 years ago and has very clear interfaces to transmission, interlocking, train protection which will reduce the amount of information to OCS.

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2013-05-21

Jesper K. Nilson


The new S-bane The second case is the new OCS for the S-bane implemented within the Signalling Programme, which will be taken into use in the period 2014 to 2018. This is "born" with a surveillance concept and has been ordered including a 25 year Service Agreement. This will increase the predictive maintenance, decrease the corrective measures and thereby increase the availability of the system.

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The new S-bane Principles

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Jesper K. Nilson


The new S-bane Principles

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Jesper K. Nilson


The new S-bane Indication input (examples)  Interlocking LEGEND  TrainGuard MT (Trackside)  System elements (examples)  TrainGuard MT (On board)  Indicator input (system state / fault)  Odometer failure – Pulse generator disturbed  Airlink (radio link trackside to train)  CPU overload (5 or 15 min. load average)  (Redundant) Accesspoint is not responding  Harddisk fill level exceeded  Ring Access Switch App. 320 different  Uplink Port [3] is down system states and  Point faults multiplied  Failure during self check with the number  Operation time exceeded for reaching end position of units  Signals  OCS (VICOS 100)  Bus  MMI  Power Supply  UPS battery low voltage detected  Technical object buildings  Aircondition Page 14

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Jesper K. Nilson


The new S-bane Incident surveillance concept TCC S&D Local Diagnostic Servers IL Hillerød IL Hellerup IL Hundige O&M Coordinator Workplace

S&D Central Server

S&D Service

S&D Service

Sicas

TGMT

Airlink

IL Lersøen

TGMT

Airlink IL København H

Interlocking Hellerup AP

AP

OBCU

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DWH

S&D Service

IL København H

Sicas

Interlocking Hillerød

Terminal Server (Web View)

IL Ballerup

AP

IL Hundige

IL Ballerup

IL Lersøen

AP

OBCU

2013-05-21

Jesper K. Nilson


The new S-bane Conclusion on maintenance based on surveillance  The new S-bane sub-systems are better integrated and more complex than the present DIC-S systems.  The safety related sub-systems has increased.  The information level from the system are extended substantially – the real issue is to analyze the data and make the right decisions. This is supported by the system itself and will be improved over the years.  This will increase the overall system availability and reduce the maintenance costs.

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Jesper K. Nilson


Thank you for your attention!

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Jesper K. Nilson


Questions?

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Jesper K. Nilson
