HEALTH & SAFETY REPORT 2013
page 15
2.3.3 KPI-3 Safety-Critical Maintenance Backlog
The KPI-3 produces a report of the total number of backlog hours for safety-critical maintenance that is
beyond its planned completion date. This excludes backlog maintenance that has been subject to a formal
and robust deferral process involving relevant technical or engineering authorities.
As can be seen in figure 10 below, the data show a seasonal (cyclic) nature probably reflecting campaign
maintenance patterns (for example, planned major maintenance shutdowns). Maintenance specialists attend
the Oil & Gas UK KPI work group meetings and agree that, although we should always strive to reduce and
minimise backlog, the levels of backlog experienced are tolerable.
Figure 10: Average Number of Planned Maintenance Man-Hours in Backlog per Installation
However, it has now been recognised that reporting the backlog in terms of man-hours alone is not entirely
helpful to our understanding of its significance. Changes are being made to the scheme to show backlog as a
percentage of total planned safety-critical maintenance. This is likely to be more relevant and meaningful in
reviewing and assessing maintenance backlog, and will be reflected in future reports.
0
20
40
60
80
100
120
140
160
180
Q1
2009
Q2
2009
Q3
2009
Q4
2009
Q1
2010
Q2
2010
Q3
2010
Q4
2010
Q1
2011
Q2
2011
Q3
2011
Q4
2011
Q1
2012
Q2
2012
Q3
2012
Q4
2012
Number of Man-Hours in Backlog per Installation
