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ENVIRONMENT REPORT
2015
page 18
Composition of Chemicals Discharged
In 2014, more than 74 per cent (approximately 78,400 tonnes) of the total chemical discharges on the UKCS were
PLONOR and five per cent (just over 5,300 tonnes) were classified as SUB. The remaining chemicals fall into other
hazard categories and all were discharged under permit.
Figure 8: A Breakdown of Drilling and Production Chemicals Discharged by Classification
0
20,000
40,000
60,000
80,000
100,000
120,000
140,000
2011
2012
2013
2014
Chemical Discharge (Tonnes)
Production Other*
Production SUB
Production PLONOR
Drilling Other*
Drilling SUB
Drilling PLONOR
Source: EEMS June 2015
*Other includes those chemicals reported in EEMS that are not classified as PLONOR or SUB but all chemicals have a
permit to be discharged.
Figure 9: A Breakdown of Pipeline Chemicals Discharged by Classification
0
500
1,000
1,500
2,000
2,500
3,000
2011
2012
2013
2014
Pipeline Chemicals (Tonnes)
Pipeline Other*
Pipeline SUB
Pipeline PLONOR
Source: EEMS June 2015
*Other includes those chemicals reported in EEMS that are not classified as PLONOR or SUB but all chemicals have a
permit to be discharged.