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  2. Water heating - Wikipedia

    en.wikipedia.org/wiki/Water_heating

    Where hot-water space heating boilers are installed, domestic hot water cylinders are usually heated indirectly by primary water from the boiler, or by an electric immersion heater (often as backup to the boiler). In the UK these vessels are called indirect cylinders and direct cylinders, respectively. Additionally, if these cylinders form part ...

  3. Testing and inspection of diving cylinders - Wikipedia

    en.wikipedia.org/wiki/Testing_and_inspection_of...

    If the inner surface is not clearly visible it should be cleaned by approved method which does not remove a significant amount of wall material. Methods allowed include shot-blasting, water jet cleaning, flailing, steam or hot water jet, rumbling and chemical cleaning. The cylinder must be internally inspected after cleaning. [22] [23]

  4. Hot water storage tank - Wikipedia

    en.wikipedia.org/wiki/Hot_water_storage_tank

    A hot water storage tank (also called a hot water tank, thermal storage tank, hot water thermal storage unit, heat storage tank, hot water cylinder, and geyser) is a water tank used for storing hot water for space heating or domestic use. Water is a convenient heat storage medium because it has a high specific heat capacity. This means ...

  5. Water supply and sanitation in New Zealand - Wikipedia

    en.wikipedia.org/wiki/Water_supply_and...

    Water complies with all the legislative requirements under the Act: 3,250,000 (84.7%) Implementation of a water safety plan for the supply has commenced: 3,810,000 (99.3%) Met the bacteriological requirements of Standards: 3,751,000 (97.7%) Met all the monitoring requirements in the Standards: 3,531,000 (92.0%)

  6. Plumbing - Wikipedia

    en.wikipedia.org/wiki/Plumbing

    Old water pipe, remnant of the Machine de Marly near Versailles, France. Lead was the favoured material for water pipes for many centuries because its malleability made it practical to work into the desired shape. Such use was so common that the word "plumbing" derives from plumbum, the Latin word for lead.

  7. Christchurch Wastewater Treatment Plant - Wikipedia

    en.wikipedia.org/wiki/Christchurch_Wastewater...

    The pipe has a diameter of 1.8 m (5 ft 11 in) and the diffusers are 3 km (1.9 mi) off the coast from New Brighton. At a cost of NZ$85m, it was the largest ever undertaken by Christchurch City Council. [6] The Christchurch wastewater treatment plant was affected by the series of earthquakes that started in September 2010.