Environment Report 2019

Figures 45 and 46 provide a more detailed breakdown of chemical releases by source system/equipment for the period. Seven categories appear in both the top ten for the period: hydraulics systems, pipelines, umbilicals and flowlines, tanks/storage, wells and associated subsea equipment, chemicals systems, bulk transfer systems and drilling systems.

Figure 45: Top Ten Systems by Number of Chemical Releases

System / Equipment Hydraulic Systems Chemical Systems

Number of Releases

416 289 195 166 130

Drilling Systems

BOP

Bulk Transfer Systems

Pipelines, Umbilicals and Flowlines

96 95 86 62 56

Conductor Tensioner

Wells and Associated Systems

Tanks / Storage Systems

Water Injection

5

Figure 46: Top Ten Systems by Mass of Chemical Releases

System / Equipment Hydraulic Systems

Mass of Releases (Tonnes)

1220.40 331.43 246.41 212.00 177.77 153.83 137.75

Pipelines, Umbilicals and Flowlines

Tanks / Storage Systems

Wells and Associated Systems

Chemical Systems

Bulk Transfer Systems

SCM

Drilling Systems and Equipment

92.79 48.06 42.16

Risers

Drainage Systems

55