Environment Report 2019
ENVIRONMENT REPORT 2019
Figure 35 below excludes the outliers for clarity. Asset integrity related releases are in the majority for all but one year in the period.
Figure 35: Accidental Release Breakdown by Direct Cause (Excluding Outliers)
60
Unspecified
Operational
Asset
50
40
30
20
Mass of Oil Released (Tonnes)
10
0
2011
2012
2013
2014
2015
2016
2017
2018
Source: OPRED, May 2019; OGUK
The following tables provide a breakdown of the oil releases over the period by the top ten systems and equipment categories. As can be seen, most of the systems and/or equipment types shown have both a high frequency of releases and relatively high masses of oil released. Utilities equipment such as ROVs and cranes have nearly 200 releases (97 and 98 respectively), but the mass release is on average 1.5kg. Six categories appear in the top ten by both mass and frequency of release over the period: drainage systems, bulk transfer systems, hydraulic systems, diesel systems, production systems and storage systems.
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