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2. Virginia Graeme Baker Pool and Spa Safety Act - Wikipedia

   en.wikipedia.org/wiki/Virginia_Graeme_Baker_Pool...

   Virginia Graeme Baker was a seven-year-old girl who drowned when she was trapped underwater by the powerful suction of a hot tub drain. She was simply called "Graeme" and was the second youngest of five daughters including a twin. She was a proficient swimmer for her age and had been able to swim on her own since the age of three.

3. Uniform Swimming Pool, Spa and Hot Tub Code - Wikipedia

   en.wikipedia.org/wiki/Uniform_Swimming_Pool,_Spa...

   Designated as an American National Standard, the Uniform Swimming Pool, Spa and Hot Tub Code (USPSHTC) is a model code developed by the International Association of Plumbing and Mechanical Officials to govern the installation and inspection of plumbing systems associated with swimming pools, spas and hot tubs as a means of promoting the public's health, safety and welfare.

4. Hot tub - Wikipedia

   en.wikipedia.org/wiki/Hot_tub

   A 5-seat hot tub with a cast acrylic shell, supported by a frame structure, showing vents for water circulation and massage Outdoor hot tubs. A hot tub is a large tub full of water used for hydrotherapy, relaxation or pleasure. Some have powerful jets for massage purposes. Hot tubs are sometimes also known as "spas" or by the trade name Jacuzzi ...

5. Swimming pool sanitation - Wikipedia

   en.wikipedia.org/wiki/Swimming_pool_sanitation

   Two distinct and separate methods are employed in the sanitation of a swimming pool. The filtration system removes organic waste on a daily basis by using the sieve baskets inside the skimmer and circulation pump and the sand unit with a backwash facility for easy removal of organic waste from the water circulation.

6. Swimming pool - Wikipedia

   en.wikipedia.org/wiki/Swimming_pool

   This is an accepted version of this page This is the latest accepted revision, reviewed on 20 February 2025. Artificial water basin for swimming For other uses, see Swimming pool (disambiguation). Backyard swimming pool Olympic-size swimming pool and starting blocks at Melbourne Sports and Aquatic Centre used for the 2006 Commonwealth Games in Melbourne, Australia A swimming pool, swimming ...

7. Maintenance - Wikipedia

   en.wikipedia.org/wiki/Maintenance

   Preventive maintenance or preventative [16] maintenance (PM) has the following meanings: The care and servicing by personnel for the purpose of maintaining equipment in satisfactory operating condition by providing for systematic inspection, detection , and correction of incipient failures either before they occur or before they develop into ...

8. Bathtub curve - Wikipedia

   en.wikipedia.org/wiki/Bathtub_curve

   The 'bathtub curve' hazard function (blue, upper solid line) is a combination of a decreasing hazard of early failure (red dotted line) and an increasing hazard of wear-out failure (yellow dotted line), plus some constant hazard of random failure (green, lower solid line).

9. Geothermal energy - Wikipedia

   en.wikipedia.org/wiki/Geothermal_energy

   Enhanced geothermal systems tend to be on the high side of these ranges, with capital costs above $4 million per MW and break-even above $0.054 per kW·h. [42] Between 2013 and 2020, private investments were the main source of funding for renewable energy, comprising approximately 75% of total financing. The mix between private and public ...