Maintenance Task Analysis™ (MTA)
Fast and Effective Analysis for Less Critical Assets
Maintenance Task Analysis™ (MTA) is a fast and effective analysis used for less critical assets. It’s a process that goes hand in hand with Reliability Centered Maintenance (RCM) for your organization’s overall asset maintenance strategy.
MTA ensures that the tasks you perform are actually adding value to your reliability and risk management program. Unlike RCM, MTA is not a zero-base analysis, and it is used to optimize existing Preventative Maintenance (PM) programs.
Many tasks in existing maintenance programs add no value or are simply duplicated. MTA is the process we use to eliminate non-value-added tasks – those tasks that are not technically feasible or worth doing. Aladon’s REW software makes MTA more efficient because it can import PM task information for use within REW.
The Purpose of Maintenance Task Analysis
MTA is a best practice for asset management for regular review of your asset care programs to check if tasks are still effective. As modifications are made to your equipment or the Operating Context, MTA is an important tool to validate the PM tasks.
In many cases the PM adds maintenance tasks to treat an individual failure mode, but the task proves to be ineffective. Nobody follows up on it, and it remains a maintenance task for years.
Another reason to use MTA is to capture knowledge across your organization. With an experienced workforce, all kinds of undocumented tasks are performed and this knowledge is not transferred to new hires. Asset performance declines as the workforce retires.
Sometimes just improving the task descriptions to include what to check, how to check it and performance criteria for good/bad improves the PM. This standardizes the task regardless of who performs it.
Aladon provides guidance with its Reliability Strategy Selection (RSS) to select the risk appropriate methodology to use. MTA is not recommended for critical assets or when there are chronic problems on equipment since there may be fundamental problems with the PM that requires a zero-based approach like RCM.
How your organization can use MTA to review and validate tasks
- Identify mandatory tasks and document the regulatory reference for the tasks
- Identify tasks that are not preventing a failure mode and mark them as a candidate for removal since effective tasks should address one or more failure modes
- Identify any duplicate tasks. Sometimes different crafts are doing similar checks, or repetitive checks are done at different frequencies
- Identify specific failure modes and mechanisms that are useful for audits and maintenance optimization
- Check if a task is cost effective as technology and resources change over the years
- If a task is not cost effective, then determine if a change in interval or technology make the task more effective
- Review the task description to ensure the description is clear and effective with a performance standard
- Identify any missing tasks that address a missing failure mode based upon recent failure history. You can check the proposed new tasks to see if they are technically feasible and worthwhile
- Document informal tasks that are being performed that are not on a procedure
Benefits of MTA
- Reduce the amount of fire fighting with more effective maintenance
- Capture intellectual knowledge of the people who know the equipment best
- Reduce labor spent on non-value-added routine maintenance
- Use predictive maintenance technologies effectively
- Integrate operational tasks into the asset reliability program where appropriate
- Improve task descriptions to inform maintenance what to do, how to do it, and specify performance criteria
- Define maintenance task intervals on technically valid principals
While RCM3™ is the most rigorous approach ideal for critical assets, MTA provides an accelerated process for lower-risk assets. Together, MTA and RCM3 can provide coverage across the bulk of an asset base to develop technically sound maintenance programs for optimal asset performance.