Spray from a passing driver shot into his air intake, cutting his power and ending his chances.

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The company's chief executive, Rupert Soames, said there had been a strong order intake and a healthy pipeline of inquiries about hiring power units.

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Its international power arm - which serves utilities, governments, armed forces and major industrial customers with power plants ranging from 10 megawatts to 100 megawatts on a single site - saw order intake below a year earlier.

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The rule targets equipment that power plants and manufacturing facilities use to draw in water to prevent overheating, even though those intake systems are not harmful to human health or water quality.

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