Environmental Report 2000 - EnBW

State of the Environment Report
Regular appraisal of suppliers
The operating locations with eco-certification
regularly check the quality
standards of our suppliers. Safety
data sheets for hazardous substances
are posted on our intranet. In-company
regulations governing the hand-
By replacing an old coal-fired unit in
the Rheinhafen steam power plant at
Karlsruhe with a state-of-the-art gas
turbine and steam unit, we have
increased output efficiency to 57.5%
– a record figure for Germany.
In the Philippsburg nuclear power
plant (KKP), we were able to increase
output efficiency first by 116 MW and
then by a further 34 MW without
recourse to added fuel consumption.
We did this by firstly replacing the turbine
blades between 1991–1996 and
then, with official sanction, by raising
the middle range cooling agent temperature
in unit 2 in 2000.
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ling of hazardous substances will be
posted in the intranet in 2001.
The fuels used in our power plants
are coal, heating oil, gas, uranium,
sewage sludge and wood. We regularly
monitor both the quality of the
fuel and its history from extraction to
final delivery.
Maximum efficiency with minimum resource consumption
When building new installations we opt for energy-saving construction. And we have
continually improved the efficiency rating of our power stations.
Energy-saving in offices too
In view of the 4% of energy used in
energy production and the further 6%
of inevitable loss during transport and
distribution, energy savings in our
administrative departments play a
negligible role in the overall picture.
Even so, this is an area in which we
are also highly energy-conscious.
We are careful to see that new photocopiers
and other office equipment
comes complete with automatic
power-down devices, that office lighting
can be controlled by movement
sensors and only uses energy-saving
bulbs.
Auxiliary material for power production in t
Limestone
38,933 t
85%
In particular, our certificated sites are
the focus of systematic monitoring
measures that seek to pinpoint energy-saving
potential and harness it to
environmental programmes. This includes
a wide variety of measures
from the optimal use of pumps and
plants to enhanced control of electric
motors.
During conversion, we equip our
buildings with energy-saving insulation.
And if the findings of cost benefit
analyses are positive, we take steps
to install heat recovery units.
9%
3%
3%
Hydrochloric
acid
1,223 t
Ammonia
4,142 t
Other
1,300 t
A miserly approach to water
We are constantly striving to reduce water consumption by introducing water saving
measures and multiple applications.
Operating a power plant requires a
tremendous quantity of water. This
water isn’t actually consumed, but
merely heated with the waste heat
and channelled back into the river. In
many sites ecological problems can
be avoided by the use of cooling
towers so that river heating is kept to
a strict minimum.
The partial conversion of units 3-6 to
cold reserves in the Heilbronn thermal
power plant has significantly reduced
the need for cooling water and thus
the warming of the river Neckar.
Waste water recycled and
recycled…
In the past few years we have realised
concepts for the multiple use of
waste water in our plants at Heilbronn
and Karlsruhe and in our treatment
and disposal installations. These
concepts have led to a drastic drop in
levels of fresh water consumption.
They will be further developed.
Whilst river water consumption in our
three thermal power plants at Heilbronn,
Karlsruhe and Philippsburg has
dropped by 40% from its 1997 level
of 3 billion cubic meters to 1.8 billion
cubic meters, the level of drinking
water consumption has fallen by half.
Water Input: River Water
in million m 3
3,500
3,000
2,500
2,000
1,500
1,000
500
0
3,059.44
1997
River water
2,189.36
1998
2,306.14
1999
1,790.42
2000
In Heilbronn our ground water consumption
has increased due to the
increased water levels in the storage
building. We use the water for plant
operations and divert the rest, which
is more than we need, into the river
Neckar.
Water Input: Groundwater/Drinking Water
in million m 3
3.5
3.0
2.5
2.0
1.5
1.0
0.5
0
0.138
2.56
0.141
2.71
1997 1998 1999
Drinking Water
Groundwater
0.09
3.01
0.07
3.27
2000
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