Maintenance Technology September 2016 - 72
11
understanding the operating context of the
system, particularly those redundancy aspects.
Consideration must be given to what parts of the
redundancy are hot-standby or cold-standby,
and if the system being operated and maintained
maximizes system uptime. If so, have the
operational checks been optimized leveraging
scientific methodologies which are sensible
and defensible?
schedules which are wasteful because they
d o n ' t h ave t h e s a m e e f f e c t . I n fa c t , t h e
maintenance task may cause the failure that the
task was intended to prevent. It also exposes
workers' health and safety, as well as our
precious environment, to the risk of asset failure
while the unnecessary task is being performed.
The comprehensive database resulting from a
RCM analysis includes the operating context,
RCM information worksheet and RCM decision
worksheet, all of which can be leveraged for
the entire life cycle of the asset. The fact that
the RCM analysis is a living document makes
it possible to adapt to changing circumstances
without having to reconsider all maintenance
policies and demonstrate that maintenance
programs are built on rational foundations,
thereby meeting the audit requirements of
regulators and standards.
M o d e r n d a t a ce n te r s e m p l oy re d u n d a n t
components and systems designed to
maximize a facility's uptime. Component and
system redundancies are intended to allow for
concurrent maintainability and/or fault tolerance
while sustaining IT processes. Paramount
to successful operation and maintenance is
These redundancies within a data center are an
arrangement of like components, each having
similar control devices. The redundant (protective)
component is configured to support the protected
component. The RCM process analyzes failure
modes and effects to understand the failure
consequences, then asks a group of Subject
Matter Experts (SMEs - who know the asset best)
if the failure is evident to operators under normal
operating conditions and if there is a proactive
task that is technically feasible and worth doing
to reduce or eliminate those consequences. On
redundant systems, in many instances there
are failure modes that are not evident to the
operator under normal operating conditions and
may only become evident under multiple failure
conditions. These are 'hidden' failures requiring
the identification of tasks to secure the availability
needed to reduce the probability of a multiple
failure to a tolerable level.
A task that reduces the probability of a 'multiple
failure' could be an 'on-condition' task where
there is a clear potential failure condition which
is manageable.
Ex: "Check unit temperature level" may be too
vague. A possible alternative: "Visually
inspect Thermal Unit 14-a's temperature
using SOP S327 (f). If above 145°F, schedule
for repair at next available downturn" or
"custom-developed box containing code that
can no longer be modified, update operating
context and identify failure mode, schedule
replacement with coded device that allows
for user interface at earliest downtime".
Another task could be a scheduled restoration if
there is an age at which there is a rapid increase
in the probability of failure. Perhaps a task could
be a scheduled discard if there is an age at
which there is a rapid increase in the probability
of failure.
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10127-4056 SMRP Solutions SE.indd 11
8/22/16 9:43 AM
http://WWW.SMRP.ORG
Table of Contents for the Digital Edition of Maintenance Technology September 2016
Editorial
Uptime
On The Floor
Old-School Approach To New-World Technology
Art Meets Reliability Science
Commit To Safety
Robot-Human Interaction Getting Safer
Sanitary, Stainless Conveyors Not The Same
Reduce Hidden Process-Safety Costs
Pace Your Reliability Program
Win The War With 'Lubrication By Design'
SAP Tips And Tricks
Understand Pump Vibration
Select The Right Relay
Bearing Care
Clear Up HOA Confusion
Potato Waste Becomes Clean Water, Energy
Products
Showcase
Ad Index
Final Thought
Maintenance Technology September 2016 - 1
Maintenance Technology September 2016 - Cover1
Maintenance Technology September 2016 - Cover2
Maintenance Technology September 2016 - 1
Maintenance Technology September 2016 - 2
Maintenance Technology September 2016 - 3
Maintenance Technology September 2016 - Editorial
Maintenance Technology September 2016 - 5
Maintenance Technology September 2016 - Uptime
Maintenance Technology September 2016 - 7
Maintenance Technology September 2016 - On The Floor
Maintenance Technology September 2016 - 9
Maintenance Technology September 2016 - Old-School Approach To New-World Technology
Maintenance Technology September 2016 - 11
Maintenance Technology September 2016 - 12
Maintenance Technology September 2016 - 13
Maintenance Technology September 2016 - 14
Maintenance Technology September 2016 - 15
Maintenance Technology September 2016 - Art Meets Reliability Science
Maintenance Technology September 2016 - 17
Maintenance Technology September 2016 - 18
Maintenance Technology September 2016 - 19
Maintenance Technology September 2016 - Commit To Safety
Maintenance Technology September 2016 - 21
Maintenance Technology September 2016 - 22
Maintenance Technology September 2016 - 23
Maintenance Technology September 2016 - Robot-Human Interaction Getting Safer
Maintenance Technology September 2016 - 25
Maintenance Technology September 2016 - Sanitary, Stainless Conveyors Not The Same
Maintenance Technology September 2016 - 27
Maintenance Technology September 2016 - 28
Maintenance Technology September 2016 - Reduce Hidden Process-Safety Costs
Maintenance Technology September 2016 - 30
Maintenance Technology September 2016 - Pace Your Reliability Program
Maintenance Technology September 2016 - 32
Maintenance Technology September 2016 - 33
Maintenance Technology September 2016 - 34
Maintenance Technology September 2016 - 35
Maintenance Technology September 2016 - Win The War With 'Lubrication By Design'
Maintenance Technology September 2016 - 37
Maintenance Technology September 2016 - 38
Maintenance Technology September 2016 - SAP Tips And Tricks
Maintenance Technology September 2016 - Understand Pump Vibration
Maintenance Technology September 2016 - Select The Right Relay
Maintenance Technology September 2016 - Bearing Care
Maintenance Technology September 2016 - 43
Maintenance Technology September 2016 - Clear Up HOA Confusion
Maintenance Technology September 2016 - Potato Waste Becomes Clean Water, Energy
Maintenance Technology September 2016 - 46
Maintenance Technology September 2016 - 47
Maintenance Technology September 2016 - 48
Maintenance Technology September 2016 - 49
Maintenance Technology September 2016 - 50
Maintenance Technology September 2016 - 51
Maintenance Technology September 2016 - 52
Maintenance Technology September 2016 - Showcase
Maintenance Technology September 2016 - Ad Index
Maintenance Technology September 2016 - 55
Maintenance Technology September 2016 - Final Thought
Maintenance Technology September 2016 - Cover3
Maintenance Technology September 2016 - Cover4
Maintenance Technology September 2016 - 62
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