Health and Safety Report 2019

Maintenance is a key activity and despite the downturn in the industry there has been a sustained downward trend in safety-critical maintenance backlog hours since the peak in 2015. This trend is reflected in the preventative and the corrective hours, however, the deferred maintenance backlog started to show an increase at the start of 2018 from the end of 2017. Deferred maintenance schemes are often used to ensure that maintenance is scheduled efficiently in line with planned shutdowns, or when the end of life of the installation is approaching. This increase may therefore be driven by installation-specific factors, or by larger infrastructural requirements such as the planned Forties Pipeline shutdown in 2020. Variations in the quarterly performance can make it difficult to ascertain overall trends; 2017 and 2018 both saw increases in backlog between the first and second quarters which were later reversed. The annual rolling average, which shows the longer-term trend in backlog, does indicate an increase starting in 2018. OGUK will continue to monitor this closely to determine either that the increase is temporary, or, if it is not, ensure that concerted action is taken to address it.

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Figure 19: Average Preventative, Corrective and Deferred Safety-Critical Maintenance Man-Hours in Backlog per Installation

3000

Deferred Maintenance

Corrective Maintenance in Backlog

Preventive Maintenance in Backlog Rolling A verage

2500

2000

1500

1000

Average Number of Man-Hours in Backlog per Installation

500

0

Q1 2015 Q2 2015 Q3 2015 Q4 2015 Q1 2016 Q2 2016 Q3 2016 Q4 2016 Q1 2017 Q2 2017 Q3 2017 Q4 2017 Q1 2018 Q2 2018 Q3 2018 Q4 2018

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