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Author Topic: RMT Threaten strike over legionella on thameslink trains.  (Read 915 times)
broadgage
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« on: August 23, 2021, 07:09:44 am »

A non issue in my view.
Legionella is only dangerous in fine water sprays that can be inhaled.
Cooling towers, showers, and similar equipment are high risk.
Decorative water features and spray taps carry some risk.
Warm water is the risk, below 20 degrees or above 55 degrees the risks are minimal.
Water stored between 20 degrees and 55 degrees carries some risk, but only if sprayed in fine droplets and then inhaled. As might occur in a shower.
Water supplied at less than 20 degrees and then heated to say 40 degrees at the point of use without storage (as in an electric shower) carries almost no risk.
Water that is constantly re-used or recirculated as in a cooling tower or decorative water feature. is high risk.

I have never heard of anyone catching Legionnaires disease from toilet flushing water, or from hand washing water in the toilet on a train or indeed anywhere else.

I presume that all RMT (National Union of Rail, Maritime & Transport Workers) members have their home toilet flush cisterns regularly tested for legionella, and disinfected as a precaution.

https://www.bbc.co.uk/news/uk-england-london-58298711

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A proper intercity train has a minimum of 8 coaches, gangwayed throughout, with first at one end, and a full sized buffet car between first and standard.
It has space for cycles, surfboards,luggage etc.
A 5 car DMU (Diesel Multiple Unit) is not a proper inter-city train. The 5+5 and 9 car DMUs are almost as bad.
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« Reply #1 on: August 23, 2021, 02:19:06 pm »

A non issue in my view.
Legionella is only dangerous in fine water sprays that can be inhaled.
Cooling towers, showers, and similar equipment are high risk.
Decorative water features and spray taps carry some risk.
Warm water is the risk, below 20 degrees or above 55 degrees the risks are minimal.
Water stored between 20 degrees and 55 degrees carries some risk, but only if sprayed in fine droplets and then inhaled. As might occur in a shower.
Water supplied at less than 20 degrees and then heated to say 40 degrees at the point of use without storage (as in an electric shower) carries almost no risk.
Water that is constantly re-used or recirculated as in a cooling tower or decorative water feature. is high risk.

I have never heard of anyone catching Legionnaires disease from toilet flushing water, or from hand washing water in the toilet on a train or indeed anywhere else.

I presume that all RMT (National Union of Rail, Maritime & Transport Workers) members have their home toilet flush cisterns regularly tested for legionella, and disinfected as a precaution.

https://www.bbc.co.uk/news/uk-england-london-58298711



It should be a concern that the bacteria has been found on 4 units.  This does show a lack of maintenance checks by Siemens the OEM of the 700 and maintainer.

The Legionella might be just one item on a list of concerns the Union has which GTR and Siemens are not addressing
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