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oil & gas

Saving around 65% on annual motor maintenance.

Applying our maintenance optimisation software and technology RTAMOTM in the North Sea

Key facts

  • 01.


    Integrated global energy company

  • 02.

    Low voltage motors, North Sea operations

    Low voltage motors, North Sea operations

  • 03.


    Estimated maintenance saving of 65% and 7,127 annualised working hours

Client challenge

petrosa case study header.jpgOur client, with interests in 49 fields, needed to ensure cost efficiency was being achieved in a tough economic climate. In particular, the company was scrutinising aspects of its maintenance regime, focusing on equipment without an immediate production or safety benefit. Ideas here included considering reducing preventative maintenance on items with low-failure rates or equipment which could run-to-failure (RTF) with minimal adverse consequences. OPEX was currently too high and the persons on board (POB) capacity was insufficient to deliver current maintenance burdens.

How we helped

rtamo case studyWe applied our software-enabled maintenance optimisation solution, known as RTAMO™, to deliver a key study. Findings would provide the client with optimised maintenance frequencies on their low voltage (LV) motor population. The ultimate aim was to reduce the maintenance burden in this area, reducing OPEX costs.

Note: RTAMO™ knowledge and expertise has now been built into our new solution - AllAssets Maintenance Optimisation, offering you even more functionality.

The study of 970 items took three weeks. Analysis was broken down in to distinct areas to allow for new frequencies to be assigned to planned maintenance (PM) on the LV motors.  

There were four main stages.

1. Interrogation of the data to determine failure rates for each of the facilities.

2. Subject the data to RTAMO cost analysis.

3. Assign planned maintenance an agreed severity.

4. Optimise maintenance activities.

The fully auditable study will allow for formal updates of the necessary client strategies and documents on its LV motors, as well as updating the work management system (WMS) accordingly.rtamo case study

Insight  & Key results

Analysis outcome:


  • 93 planned maintenance routines (PMR) were recommended for their frequency to increase

  • 9 PMRs had no changes

  • 761 PMRs were recommended for their frequency to decrease.

Key results

Our optimisation study stopped a miss-use of time and cost in conducting unnecessary maintenance activities. With the implementation of the analysis and agreed commercial and time assumption, an estimated financial saving of 65% can be made on annual maintenance on low-voltage motors. (This was determined by looking at the previous maintenance outlay versus the proposed strategy.) That equates to an estimated reduction of 7,127 annualised working hours.

Our recommendations included the importance of a motor greasing regime and for the strategy to be applied consistently across all units.

Business benefits

  • Unnecessary planned maintenance tasks eliminated.

  • Maintenance intervals extended where justifiable.

  • Reduced maintenance burden. 

  • Reduced OPEX costs.

  • Improved production critical reliability and availability.

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