Life Cycle Assessment of Fiber Composites_final__rättad

Total tkm over lifetime= 336875000000000 tkm
Per ton km impact of the total weight of the steel super structure would be (functional unit)
= 1 unit of super structure/ Tons carried over lifetime x distance covered over lifetime
= 2.968E-15
In the operation phase the heavy fuel oil data was used from the Sima pro
database. Its emission during combustion (Altmann et.al., 2004) of heavy fuel
during operation was entered into the Simapro. To give exact picture of how
much emission are given out in the atmosphere during operation of the ship
and combustion of fuel.
Table 3. Data for operation steel superstructure
Material/
processes
Heavy Fuel oil For
Stena
1.324E-9
Amount
Name of
Database
Created
Combustion data
(Altmann, 2004)
Fuel oil (IDEMAT)
Comment
All diesel ships use this
fuel.
The consumption of fuel during operation a mean value is taken per day
consumption from the following data which is 51 ton per day on a an average
speed of 20 knots and per hour consumption of 2.8 tons
Table 4. Data for fuel consumption by Stena Hollandica. ( Anna Hedlund)
Speed in knots Tons/hour Ton /day
19 2.3 42
20 2.8 50
21 3.4 61
Table 5. Fuel consumption over lifecycle
The fuel consumed on the basis of above taken mean values per year is = 17850 tons (51 x
350)
Over a life time the fuel consumed would be = 446250 tons (17850 x 25)
Per tonkm consumption of the fuel for steel structure would be = 1.32E-9 (unit / tons
transported lifetime x distance covered over lifetime)
In the maintenance of the steel super structure we are assuming over a lifetime
10 percent of the steel would be replaced by new steel. (Jiven. et.al. 2004)
Total steel used for maintenance is = 80 tons
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