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PI009 | Emitted mass of SOx V4.0

Performance Indicator

This PI is used in calculation of energy efficiency in the KPI SOx efficiency by dividing the value on the PI Transport work.


DefinitionThe mass of SOx emitted by the vessel is calculated by multiplying given fuel type consumption expressed in metric tons and sulphur content factor expressed in kg/metric ton.

Sulphur content factor is calculated by multiplying fixed parameter of 20kg/mt and given fuel 
type sulphur content percentage expressed as absolute value. 

The total mass of SOx emitted by the vessel is calculated by adding masses of SOx emitted by the vessel burning all, different types of fuel.

Respective fuel consumptions shall be calculated only for voyages completed during given quarter in order to be compared to the Transport Work (PI064). This means that an inaccuracy is acceptable with respect to the definition of the quarter.
UnitKILOGRAMS (Kg)
ScopeReported on a ship level
Calculation periodCaptured and reported on a quarterly basis
ReferencesThis Performance Indicator - PI009 - is used by the following Key Performance Indicators
KPI030SOx efficiency
PI009Emitted mass of SOx
PI064Transport work
Example

Bunkers consumption: 3060.00 metric tons Heavy Fuel Oil
Sulphur content factor: 3,5[%] * 20[kg/ton] = 70 [kg/ton]

Emitted mass SOx = 3060.00 [metric tons] * 70 kg/ton = 214,200 kg

External references

IMO GHG Study Annex 6 Details for Section 2: other GHG emissions and relevant substances