Scheduling is what/when/where/ who/ why, plus how.
The LTMP Book of life details the recommended activities to be scheduled over the 10 year term. The schedule details all the activities per structural item and per cycle. The activities (annual recurring and some non annual activities relevant to the specific year needs to be further scrutinized to determine the final schedule of activities to be implemented in the specific year.
First must be established what activities needs to be implemented in the current year. Secondly can we then look at the where, how and who aspects of scheduling activities.
- What and why are addressed in the LTMP. The minimum activities required to effectively manage the infrastructure were formulated per item after considering various inputs from service manuals, industry norms, legislation. The, activities relevant to the specific year (as listed in the book of life) should be considered in terms of the factors below (published in Condition report) to determine the activities that will be actioned in the specific year. (metrics below are published in Condition report)
- What is the (RUL) residual life of the Item/component in question, i.e. the probable time that has been left until failure).
- What is the (Health index) probability of failure of the component during the coming period.
- What is the predicted value of the Tolerance parameter, e.g. functionality until next restoration event.
- What is the priorities relates items currently is failed or risk state as documented in the restoration report
- What are, if there any, alternative solutions, e.g. Do/defer/replace. Refer to recommendations on the inspection report
Where necessary, can activities adjusted/adjusted/deferred .i t.o nature and timing to supplement the existing activity framework. E.g. With time can learning enable predictive insight and this can be used to fine tune activities and result in further efficiency gains.
Using scheduling principles such as clustering and JIT can the where, who and When be determined and can activities be scheduled accordingly.
- Where in the context of LTMP activities relates mostly to the impact of the activities on security and inconvenience to the occupants. There is an inverse relationship between number/time of events and impact, thus is the goal to minimize the number of activities. Using scheduling principles such as clustering and JIT can activities be scheduled accordingly
- Who directly relates to the complexity of the activity and activity cost. Higher complexity implies the need for higher specialized skills, but at higher marginal cost. Marginal cost can be reduced/optimized by clustering horizontally and vertically per complexity level. Service contracts is a next level optimization, that can be used.
- When is a key variable that speaks to the core of a LTMP as it is one of the key variables of degradation, LTV (Life time value) and LE (Life expectancy) for a specific structural item. The activity schedule feeds into the financial forecast done over the 10 year scope.
Over and above the higher level funding requirement for the activity framework, is there also an intra-year timing dependency (contributions /annual expenses) where activity timing and funding does not always align. Through the LTMP can the deferment tolerance levels be used to bridge the timing/funding gap. The Infrastructure condition report details the tolerance level per item, which indicate the lag time to next level deterioration.
Seasonal factors and dependencies can influence the optimum time and cost of scheduling activities in the Book of life.
Please refer to our published quarterly scheduling guidelines where we detail the recommended activities to be scheduled for the next quarter as well as other quick wins and best practices relating to LTMP and activity scheduling.
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