A WA parliamentary question on notice addresses the environmental impact assessment of a 260MW power station in Kemerton Industrial Estate, focusing on air emissions, fuel sources, and potential gas supply issues. The response provides details on assessed emissions based on a mix of natural gas and diesel fuel usage.

AnsweredQoN 2496Legislative Assembly
Asked
2 March 2004
Portfolio
the Environment

QuestionView source ↗

(1) Has the 260 megawatt power station, recently approved for operation within the Kemerton Industrial Estate, been assessed for its air emissions including greenhouse gas emissions?
(2) If yes, has this assessment been carried out on the basis that the station will operate on natural gas or on diesel or on a variable feed using these two fuels at different times and, if yes, what proportion of which fuel has formed the basis for this assessment?
(3) In the course of a 12 month period and recognising that the station is a peak load facility and does not supply base load, what would be the normal total outputs of the usual air emission pollutants including greenhouse gases if the station ran 100% of the time on natural gas versus 100% on diesel?
(4) Is the Minister aware that the station is likely to face a shortage of natural gas fuel supplies because of limitations on gas availability through the existing Perth to Bunbury pipeline?
(5) Will this station have a 1.5 million litre diesel fuel storage tank as part of its fuel supply infrastructure?

AnswerView source ↗

Answered
8 April 2004
Responded by
Minister for the Environment
Response time
37 days
(2) The Environmental Protection Authority (EPA) assessment was for a nominal 260MW peaking plant operating approximately 1000 hours per year, with up to 100 hours on ultra low sulphur diesel. (3) The power station was not assessed for running 100% of the time on natural gas, nor 100% of the time on liquid fuel. The EPA assessment was for the power station operating for 900 hours per year on natural gas and 100 hours per year on liquid fuel. This results in the predicted emissions: Air Emission Natural Gas (900 hrs/year) Liquid fuel (100 hrs/year) Oxides of nitrogen 127 tpa 41.1 tpa Oxides of sulphur negligible tpa 0.146 tpa Particulate matter 6.48 tpa 2.74 tpa Carbon monoxide 70.3 tpa 7.54 tpa Polycyclic aromatic hydrocarbons 0.0028 tpa 0.0057 tpa Non-methane volatile organic compounds 2.69 tpa 0.058 tpa Greenhouse gas emissions 160,000 tpa assuming 900 hours per year operation on natural gas and 100 hours per year on liquid fuel. tpa: tonnes per annum (4) This question should be referred to the Minister for Energy. (5) Yes.
(3) The power station was not assessed for running 100% of the time on natural gas, nor 100% of the time on liquid fuel. The EPA assessment was for the power station operating for 900 hours per year on natural gas and 100 hours per year on liquid fuel. This results in the predicted emissions: Air Emission Natural Gas (900 hrs/year) Liquid fuel (100 hrs/year) Oxides of nitrogen 127 tpa 41.1 tpa Oxides of sulphur negligible tpa 0.146 tpa Particulate matter 6.48 tpa 2.74 tpa Carbon monoxide 70.3 tpa 7.54 tpa Polycyclic aromatic hydrocarbons 0.0028 tpa 0.0057 tpa Non-methane volatile organic compounds 2.69 tpa 0.058 tpa Greenhouse gas emissions 160,000 tpa assuming 900 hours per year operation on natural gas and 100 hours per year on liquid fuel. tpa: tonnes per annum (4) This question should be referred to the Minister for Energy. (5) Yes.
This results in the predicted emissions: Air Emission Natural Gas (900 hrs/year) Liquid fuel (100 hrs/year) Oxides of nitrogen 127 tpa 41.1 tpa Oxides of sulphur negligible tpa 0.146 tpa Particulate matter 6.48 tpa 2.74 tpa Carbon monoxide 70.3 tpa 7.54 tpa Polycyclic aromatic hydrocarbons 0.0028 tpa 0.0057 tpa Non-methane volatile organic compounds 2.69 tpa 0.058 tpa Greenhouse gas emissions 160,000 tpa assuming 900 hours per year operation on natural gas and 100 hours per year on liquid fuel. tpa: tonnes per annum (4) This question should be referred to the Minister for Energy. (5) Yes.
(4) This question should be referred to the Minister for Energy. (5) Yes.
(5) Yes.

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