Environment Report 2017

Figure 36: Accidental Chemical Release Mass by Source Excluding Outliers

1

100 150 200 250 300 350 400 450 500

Other*

Hydraulic Systems

2

Subsea Systems and Related Equipment Pipework Infrastructure

3

Containment

Bulk Transfer Systems

4

Drainage Systems

Accidental Chemical Release Mass Excluding Outliers (Tonnes)

Production Systems and Related Equipment Number of Releases

0 50

5

2010 2011 2012 2013 2014 2015 2016

6

*Other includes releases from flare systems, deck washings, firefighting and those releases for which no source is identified.

Source: BEIS July 2017

Figure 37 provides a more detailed breakdown of release source for 2016. This reveals a variation from the six-year trend with pipework infrastructure being the main source (102 tonnes, 40 per cent) and production systems a much smaller contributor (0.18 tonnes, less than 1 per cent). Most of this is attributable to four of the large single releases, which contributed nearly 75 tonnes (29 per cent) of the total chemicals released.

7

Figure 37: Accidental Chemical Release Mass by Source, 2016

8

1.8 tonnes

0.2 tonnes

Other*

3.2 tonnes

35.2 tonnes

9

Hydraulic Systems

47.6 tonnes

Subsea Systems and Related Equipment

Pipework Infrastructure

10

61.3 tonnes

Containment

Bulk Transfer Systems

11

Drainage Systems

Production Systems and Related Equipment

102.5 tonnes

5.9 tonnes

*Other includes releases from firefighting systems, flare systems, deck washings and unidentified sheen, as well as those releases for which no source is identified.

Source: BEIS July 2017

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