It said clear, sterile water would be discharged and there would be a back-up system in case of error.

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The report also lauds the land-based eLoran radio navigation system as a very worthy back-up technology.

BBC: UK 'over-reliant' on GPS signals, engineers warn

Although the system is designed to failover to a back-up switch, the failover did not function as previously tested.

BBC: Blackberry's message goes missing

Once a second scan has been performed and it is determined that your workstation is free of any known malware, as a precautionary measure we recommended that you perform a back up of all vital files on your workstation and perform a full re-installation of the operating system.

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"This will be a very pressured situation for some time - that's why we have launched an emergency appeal for funds to back up the system here, " she said.

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