Tango™ Equipment Management
The objective of Tango's Equipment Management function is to reduce total lifecycle cost by extending equipment life between repairs
Large industrial facilities have thousands of pieces of critical equipment. Much
of this equipment runs reliably for many years between overhauls and some equipment
fails often and repeatedly. The key to reducing lifecycle cost is to understand
• Time to Failure (MTBF)
• Cost of Failure
• Root Cause of Failure
With this information, we can pinpoint the most unreliable plant equipment, justify
improving based on cost and eliminate its underlying root causes of failure to extend
its life between overhauls.
Tango™ Helps You Collect and Manage Basic Reliability Information
In order understand your facility's reliability, the causes of unreliability, justify
improvement initiatives and measure reliability improvement, three basic measures
of reliability must be maintained:
1. Time to Failure:
Often known as Mean Time Between Failure (MTBF), is the
time equipment lasts between overhauls. It is important to know MTBF for each piece
of plant equipment AND each plant location.
2. Cost of Failure:
This measurement helps prioritize reliability improvement
projects and helps measure the results of improvement projects.
3. Root Cause of Failure:
Often known as Root Cause of Failure Analysis (RCFA),
extending equipment life and reliability improvement is the identification and systematic
elimination of root causes of failure.
Equipment Lifecycle Reliability Management
Reliability Management Requires Systematic and standardized information management.
The Lifecycle Management block diagram shows the elements which Tango™ addresses
in managing equipment reliability.
Equipment Identification, Design Information and Equipment Search
Each piece of critical plant equipment in the reliability program must be permanently
identified and its design parameters entered. Basic name plate as well as detailed
design information is required to aid in reliability improvement and equipment searches.
Stores management of critical, repairable equipment is significantly more complex
than managing commodities in a stockroom. Each individual item of critical equipment
must be uniquely identified and tracked as it enters stores, is maintained in stores
and removed from stores. Adding to the complexity of critical equipment stores is
the fact that there are often multiple stores locations at the plant and offsite.
Track Installed Equipment Reliability
Managing installed equipment condition is discussed in the Condition Management
Managing physical inspections and trend data is discussed in the Rounds Logging
application section. Tracking equipment installation and removal is required for
the calculation of equipment and location MTBF and the compilation of equipment
and location histories.
As equipment moves between the lifecycle states and accumulates lifecycle data during
its lifecycle state, Tango™ maintains this history for both the specific equipment
and functional locations. Two Tango™ reports, the Equipment History Report
and the Location History Report provide interaction.
Equipment History Analysis and Program Metrics
Equipment management analysis provides information on the equipment problems and
repairs in a time period, the root cause of failure, MTBF, and cost of failure.
This information is obtained from multiple sources as the equipment is installed,
removed, repaired and re-installed.