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ENVIRONMENT REPORT
2016
LCP
Large Combustion Plant
Loss of containment
An unplanned or uncontrolled release of hydrocarbon or other substance
from primary containment
MWth
Megawatt thermal
N
2
O
Nitrous oxide
NORM
Naturally occurring radioactive materials
NO
x
Nitrogen oxides
OCNS
Offshore Chemical Notification Scheme
OGA
Oil and Gas Authority
OPEP
Oil Pollution Emergency Plan
OSPAR
The OSLO and Paris Convention for the protection of the marine
environment of the North East Atlantic
PEC
Predicted Environmental Concentration
PFCs
Perfluorocarbons
PLONOR
Pose Little Or NO Risk – used by OSPAR to classify substances used and
discharged offshore
PNEC
Predicted No Effect Concentration
PON1
Petroleum Operations Notice
Produced water
Water that comes to the surface with hydrocarbons during production,
either naturally from the reservoir or after injection into the reservoir to
displace oil and lift it to the surface.
Production efficiency
The total annual production divided by the maximum production
potential of all fields on the UKCS
REACH
Registration, Evaluation, Authorisation and Restriction of Chemicals
SF
6
Sulphur hexafluoride
SO
x
Sulphur oxides
SOSI
Seabirds Oil Sensitivity Index
Stacked rig
Reducing a crew on a rig to either zero or just a few key individuals and
storing the rig in a harbour
SUB
SUB chemicals are those classified under OCNS as harmful and should be
phased out and substituted with a less harmful substance.
UKCS
UK Continental Shelf
Venting
The controlled release of gases into the atmosphere in the course of oil
and gas production operations
VOCs
Volatile Organic Compounds
Well stream fluids
A term used to describe the total mass of fluids moving through the
production systems. This includes produced water and oil in produced
water; the produced water and oil reinjected; the total hydrocarbons
produced (gas, oil and condensate).