Welcome to the APT case studies page. Click on the items you wish to download, (NB They require the Acrobat PDF reader installed on your PC).
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Case Studies
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001 Preventative Maintenance
Using a single test site, determine an optimum overall interval for borehole pump maintenance and examine the separate contribution to the optimum strategy made by reliability and efficiency issues.
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002 Preventative Maintenance
Recommend an optimum maintenance strategy for the bundle of six tasks that comprise testing of the chlorine gas supply loop.
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003 Predictive/Condition Monitoring Determine the optimum maintenance strategy for a national population of changeover panel switch gear.
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004 Predictive/condition Monitoring
Devise an optimum cleaning and inspection interval for dosing analysers and advise on the potential impact of remote condition monitoring.
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005 Preventative Maintenance
Assess the current maintenance intervals for OLE high speed neutral track sections and recommend an optimum interval.
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006 Preventative Maintenance
Recommend an optimum strategy for maintain the client’s national population of 33kV oil circuit breakers.
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007 Predictive/condition Monitoring Assess the costs and risks associated with wooden pole maintenance and recommend an optimum inspection interval. 
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008 Predictive/condition Monitoring Test the viability of the proposed maintenance policy for three types of protection relay systems for 33kV substations, recommend an optimum maintenance policy and identify potential cost savings.
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009 Preventative Maintenance Assess the existing maintenance policy for 11kV ring main units, identify any variables that affect the requirements of different sites and recommend optimum maintenance intervals.
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010 Preventative Maintenance
Devise an optimum maintenance strategy for cleaning of the vent valve system, part of the chlorine gas supply loop. Identify any reduction in Total Business Impact compared to the existing strategy.
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011 Predictive/Condition Monitoring Provide a robust risk-justified basis for inspection intervals of chlorination failsafe system.
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012 Predictive/Condition Monitoring Estimate the pattern of unit failure and the cumulative probability of failure of chlorine gas leak detectors and devise an appropriate cost/risk optimised inspection strategy.
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013 Sanity Check Advise on client’s proposals to spend £500,000 to upgrade existing maintenance information system, which was expensive to operate, to a Y2K compliant platform for 55 sites.
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