QUANTIFIED RAMS BASED RAILWAY ASSET MANAGEMENT
Rail Asset
Railway Asset Management provides Sustainable Infrastructures through evidence-based decision making to achieve the optimum performance with Economic benefit while ensuring Safety and Integrity. It covers defining Asset Management Policy, Strategy and Framework. Key factors to consider are the physical deterioration, obsolescence, operation and maintenance of the system. Corrective Actions are based on management Data Reviews.
Asset Managers must
perform Risk Analysis and Predictive
Analysis for Maintenance planning.
In addition, a Qualitative
Vulnerability Analysis and
Managerial Oversight Risk Analysis
should be performed to evaluate
System Safety Robustness.
After defining the System
Reliability, Reliability Allocation
to sub-systems are fixed and various
Design and Manufacture criterions
are followed with trade-off between
Performance and Service life-cycle
Cost. Failure probabilities are
calculated after Mitigation of
critical Failure Modes. Cost models
on maintenance optimization can be
based on Markov model with
Inspection and Replacement policy.
Incentive on improved Reliability
and Supply of specific Reliability
Data for the Equipment must be
implied in Supply Contract,
considering other performance
aspects.
Acceptance Testing should
comply with Reliability Targets and
specify Accelerated Stress Test
Duration, including Burn-in periods,
if any. Maximum Likelihood
Estimation for Failure is calculated
before Asset acceptance.
While increasing
Reliability, Preventive Maintenance
reduces Availability and might
introduce new failures. So,
Predictive Maintenance using
Diagnostics and Prognostics is a
better Option. Comparisons between
Repair and Renewal are chosen to
maximize Availability.
MTTR must comply with 95%
Confidence that Repairs are
performed within defined duration.
Optimum Inspection Interval must be
calculated from Failure Rates,
Inspection duration and Repair time.
Adequacy of Spare Parts and Location
of Stores, whether Centralized or
Distributed, are to be specified
after calculations to provide
maximum Availability.
Reliability Growth
testing must be done to verify
stipulated MTTF.
To avoid any lapse during
On-site Maintenance Activities due
to Human Errors, specific
Checklists, Maintenance Tools and,
Drawings must be available. Proper
updated Training is mandatory for
the Concerned men-at-site.
Cloud-based Intelligent Safety Asset
Management can implement Expert
Systems, Video Conferencing with
Experts during emergency and Video
Surveillance of Construction
Sites.
Finally, Asset Management
Audits check whether the specified
strategies are being
followed.
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