Marine Maintenance Technology International - April 2016

MARINE MAINTENANCE WORLD EXPO 2016 (^) ⠿
MARINE MAINTENANCE TECHNOLOGY INTERNATIONAL | APRIL 2016 ⠿ 43
What is the subject of your presentation?
The presentation is titled ‘The ABS perspective on
performance-based maintenance: a step beyond CBM’.
Performance-based maintenance monitors system
performance patterns, seeking potential failure trends
in advance so that action may be taken to prevent
catastrophic failure. This maintenance strategy
leverages performance data collection and the
maintenance management strategy by analyzing both
data streams simultaneously. The result is system
performance improvement and optimized maintenance
progressing toward the goal of operational excellence.
ABS, as the classification society, continuously revises
the existing maintenance programs in its rules and
guides to stay current with improved technologies and
strategies. ABS will share experiences with participants.
What methods of onboard data collection do you think
offer the greatest potential?
Onboard data collection methods include portable units
wherein the operator follows a set route, collects
machinery data, and upon route completion downloads
the data into a PC or network. Some assets have the
sensors hardwired to a network and in other cases the
data is collected from the machinery computer controls
and sent to the network. Wireless technology has
progressed so well that eliminating hardwired sensors
is feasible. I believe wireless technology is viable and
an effective approach for operators to retrofit a condition
and performance-based maintenance system. Prices for
storage hardware continue to plummet and transmitting
data from the asset to shore for backup and additional
analysis is becoming easier and less expensive.
Can you give a clear example of how you have changed
or updated your rules as a classification society in
response to the possibilities offered by CBM?
ABS has issued the Guide for Survey Based on
Machinery Reliability and Maintenance Techniques,
which updates our reliability-centered maintenance
(RCM) process and includes two new processes related
to design for reliability and reliability-based
maintenance (RBM). All process requirements reflect
current applications of these technologies, with the
resulting benefit that ABS surveys are less intrusive to
vessel operations. ABS has recognized the benefits of
condition monitoring since 1978 by cooperating with
owners on developing and implementing preventative
maintenance programs and periodically updating our
publications as a result of technology breakthroughs.
For example, RBM provides an alternative reliability
process to RCM by using risk and criticality of systems
and equipment to determine the level of analysis
needed for maintenance development. A machinery
system is selected for evaluation, then the criticality
or risk-ranking of the equipment and components is
determined. The maintenance task selection processes
are then chosen based on this criticality assessment.
This approach results in a cost-effective approach at
the maintenance task selection stage.
As a classification society, have you been able to
quantify or create a formula on just how much money
a fleet operator can save by initiating a CBM program?
ABS has not quantified the actual savings for a fleet
owner because the characteristics of each vessel vary,
such as operational area, vessel age, charter rates, and
skill sets of the crew or shore-based repair personnel.
Maintenance plans for vessels are, in a sense,
customized for the unique qualities associated with
that service. Owners can recover their investment by
updating their maintenance plan with the result that
vessel delays are practically eliminated and the crew
stop reacting to equipment failures and become
proactive in their maintenance activities to prevent
unexpected failures. Owners often forget that the
lessons learned on one vessel can often be applied
to other vessels, thereby multiplying the savings. \
Speaker spotlight
Robert Conachey, senior principal engineer,
American Bureau of Shipping (ABS)
Tuesday, June 21, 11:00am
BOOK YOUR
CONFERENCE
DELEGATE PASS
ONLINE
TODAY!
http://www.MarineMaintenanceWorldExpo.com