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Ultraviolet Pool Systems

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Ultraviolet Pool Systems

In current years, the requisite for additional hygiene in public pools have become very distinct. Maintaining recreational pool water safe for swimmers most times necessitates more than the ordinary halogen-based sanitizer, such as chlorine, thus introduction of Ultraviolet (UV) Light Secondary Disinfection Systems. Some residential pool owners also use Ultraviolet pool systems in sanitation to improve general outcomes and minimize chlorine use.

Ultraviolet Pool Systems

Essentials of Ultraviolet Pool Systems

Wavelength

UV light is a range of short wavelengths of light 10nm – 400 nm and invisible to the naked eye.

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Medium-Pressure UV Light Systems

Characterization of Medium-Pressure UV Light Systems is by the UV light spectrum in which they function. They function in a wavelength range of about 250 nm-600 nm. The lamps function at temperatures above 1,500 degrees Fahrenheit. In this range of wavelengths, UV light can react with various chemicals in water and deactivate chlorine sanitizers. This makes the process expensive due to the high volumes of sanitizers needed.

Low-Pressure UV Light Systems 

This is characterized by the light spectrum in which they function. The wavelength range required to function is narrow at around 190 nm to 254 nm. The wavelength of 254 nm is suitable for the destruction of chloramine. This wavelength does not affect free chlorine and operates at 140 degrees Fahrenheit, making it cost-friendly to operate.

Secondary Disinfection UV Light Systems 

Secondary Disinfection UV Light Systems are necessary on any increased risk aquatic venue as explained in ANSI/APSP/ICC-11 2019.

The explanation for this is that some pathogens like Cryptosporidium resist halogen-based sanitizers. A single pass through the reactor can make the UV light systems inactivate the pathogens. Medium-Pressure UV Light Systems are mainly used for secondary disinfection, though Low-Pressure UV Light Systems can also be applicable.

Supplemental Disinfection UV Light Systems 

For Supplemental Disinfection UV Light Systems, installation can be on any aquatic venue, not only on increased risk aquatic venues. These ultraviolet pool systems inactivate the majority of the waterborne pathogens aside from Cryptosporidium. Most Supplemental Disinfection UV Light Systems are medium-pressure systems.

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Water Conditioning Device

UV light systems are the latest addition to UV light products and aren’t sanitizers. They use low-pressure UV lamps functioning at 254 nm. Compared to the Low Pressure UV Pool Systems, Water Conditioning Devices aren’t meant for use as either supplemental or secondary sanitizers but instead to improve water and air quality in indoor pools.

UV Light Dosage is the Key 

Whether a secondary, supplemental, or water conditioning device, the quantity is the most significant factor.

UV dosage relies on three important things:

Ultraviolet Transmittance (UVT) of the water

Contaminants like iron interrupt the transmission of UV light through water, despite the pool water appearing clear.

The power of the UV lamp

The amount required to get rid of monochloramines is 60 mj/cm2 for indoor pools and 40 mj/cm2 for outdoor pools.

The rate of the water flow through the UV pool systems

If the rate is slow, there is more contact time at the point of exposure to the UV light, hence accomplishing a higher dosage.

Different microorganisms require varying dosages for their deactivation. In most cases, UV light reacts faster at deactivating microorganisms than the advisable amount of sanitizer. Nevertheless, the common cold virus is resilient to UV light but can be easily deactivated by recreational water sanitizers.

The rate of water flow affects the UV system dosage. Thus, balancing suitable amounts of sanitizers and UV light systems at required flow rates can aid in providing a safe swimming environment.

Its application

UV treatment is a speedy physical process. In a UV disinfection process, pass water through a chamber containing a UV lamp. The bacteria in the water get exposed to the UV radiation generated by the mercury arc UV lamp. The radiation penetrates a microorganism’s cell wall, making it unable to mutate and damage its DNA. For this reason, it is unable to reproduce or function, making it harmless.

Most local codes will need a Secondary UV Light System installed to guarantee swimmer safety. Water conditioning UV light systems are becoming popular for indoor pools. This is because of their effectiveness in getting rid of stubborn chloramines; therefore helps improve the air quality for swimmers. UV products are normally used with spray pads as they are often categorized as increased risk aquatic venues because of their use by kids.

Maintenance and precautions

  • Maintenance is imperative in ensuring the proper working of UV light products. Medium-pressure units need ultimate care since they function at extremely high temperatures. For the glass sleeve containing the UV lamp, it is usually coated with calcium and other contaminants. These components, at times, have wipers to clean the sleeves automatically. Lamps also require constant replacement. The necessary maintenance raises the expenses on operation and energy use.
  • Low-pressure UV light products need lesser care. These lamps can function longer than medium-pressure units before necessitating a replacement. They are cheaper and also in the operating cost.
  • It is essential to adhere to all applicable electrical codes and safety measures when using UV equipment. Before servicing or making electrical connections, switch off the power at the main source. Follow the manufacturer’s instructions when operating and maintaining the ultraviolet pool systems.
  • UV light can lead to serious eye and skin damage. Don’t handle or glare at a functioning UV lamp.

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Pool News coverage brought to you by Pool Magazine's own Marcus Packer. Marcus Packer is a 20 year pool industry veteran pool builder and pool service technician. In addition to being a swimming pool professional, Marcus has been a writer and long time contributor for Newsweek Magazine's home improvement section and more recently for Florida Travel + Life. Have a story idea or tip you'd like to share with Pool Magazine? Email mpacker@poolmagazine.com your story idea.

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Famous Pool Painting Becomes Most Expensive Painting Ever Sold

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Famous Pool Painting Becomes Most Expensive Painting Ever Sold

The current record for most expensive painting ever sold by a living artist belongs to David Hockney. His Portrait of an Artist (Pool with Two Figures) recently sold for $90,312,500 at an auction conducted by Christie’s. The record-breaking painting is the single most expensive piece of artwork ever sold; that is by an artist that’s still breathing.

Hockney described himself once as “cooler than Warhol, more enduring than Lucien Freud.” The British native made a name for himself in the 1960’s after relocating to Los Angeles. It was in L.A. that he created some of his best known work, paintings featuring realistic depictions of swimming pools and Hollywood architecture.

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Hockney first visited California in January 1964, following a successful first solo exhibition at the John Kasmin gallery. The United States captivated him, particularly Los Angeles, owing to the impact of its modern buildings and Hollywood in general.

The swimming pool was a constant topic in Hockney’s paintings after he created California Art Collector in 1964, including Peter Getting Out of Nick’s Pool (1966, Walker Art Gallery, Liverpool), and most memorably A Bigger Splash (1967, Tate Gallery). Between 1968 and 1977, he created a number of double portraits, such as American Collectors (Fred and Marcia Weisman) (1968, Art Institute of Chicago), Mr. and Mrs. Clark, and Percy (1971, Tate Gallery).

The swimming pool and the double portrait, two of Hockney’s subjects from his paintings from the late 1960s and early 1970s, are combined in the piece ‘Portrait of an Artist (Pool with Two Figures)’. It shows a man swimming breaststroke underwater while wearing white trunks, while another is shown standing at the pool’s edge wearing full clothing and gazing down at the swimmer. The scene of the artwork is southern France, close to Saint-Tropez. With a view of hills covered in trees in the backdrop, the foreground is flattened and simplified in typical Hockney fashion.

A chance meeting of two photographs—one of a man swimming underwater, shot in California in 1966, and the other of a man standing and staring at the ground—that Hockney saw on his studio floor served as the inspiration for the composition. When compared, it seemed as though the person standing was staring at the swimmer.

Hockney said of the painting, “I must admit I loved working on that picture, […] working with such intensity; it was marvelous doing it, really thrilling”

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The sale history of that particular painting is interesting in itself. In 1972, James Astor and his wife purchased the picture for $18,000, which would be worth $117,000 in 2021. It was sold again six months later for $50,000, which would be $324,000 in 2021. American billionaire David Geffen bought it in 1983, then in 1995, he sold it to British billionaire Joe Lewis for an undisclosed sum.

When asked by CBC Radio, why Hockney started painting swimming pools, he replied:

‘In England, a swimming pool would have been seen as a sign of luxury, because the climate in England is not very good for outdoor pools. But in Southern California, it’s not — they’re simply everywhere because you can enjoy them year-round.’

‘The first place I lived, I rented a small apartment with an outdoor swimming pool. I mean, I didn’t own the pool, but nevertheless it was there.’

4.8/5 - (21 votes)

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Infinity Pool Collapse Injures Guests

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Infinity Pool Collapse Injures Guests

An infinity pool collapsed and injured a newlywed couple at a luxury Caribbean resort hotel. Reports indicate that the swimming pool collapsed unexpectedly, leading them to be swept out to sea.

Jelizaveta and Gavin Jones of Colindale, London, were on their $13,000 honeymoon at the five-star Sandals Royal Curaçao hotel when the incident occurred. Curaçao police claimed at least 12 people were injured, including the bride, who sustained ‘horrific injuries’ when the walls of the sea-facing pool caved in on Thursday.

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Jelizaveta Jones, 29, reportedly sustained ‘horrific injuries’ when the infinity pool at the Sandals Royal Curaçao hotel suddenly collapsed as she was swimming. The bride and her husband Gavin, along with 20 other vacationers in the pool, were washed out to sea.

Mrs Jones, 29, a sales professional for a US software firm, told news sources:

‘I was facing my husband, talking to him in the pool. Then I saw him go under first, then maybe five seconds later, I went. I was stuck beneath the water.’

‘I couldn’t think, I couldn’t breathe. It was all happening very quickly, there was no warning.’

‘I was trying to get up to the surface for some air, but the current was too strong. I couldn’t do anything.’

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According to local media, Curaçao police stated after their initial inquiry that the glass cracked because there were too many people in the pool during a party.

‘We’d only been in the resort less than 24 hours and were having a few drinks,’ claimed Mr Jones, 44, a bar and nightclub owner.

‘I was standing with my back to the sea, talking to my wife, when one of the panels in the middle of the pool suddenly vanished.’

‘The weight of the sea carried myself, Elizabeth, and many other individuals about 30 yards down the beach.’

The hotel had just recently opened in June, with one of its primary selling features being a bi-level infinity pool with views of both the mountains and the surrounding coast.

A spokesperson for Sandals Resorts International released a statement: ‘Thankfully, there were only a small number of guests in the pool at the time.

‘Our resort team worked quickly to ensure all were provided with immediate support and medical attention, including an evaluation by local medical professionals and treatment for any guest who required it.

‘There is nothing more important to Sandals Resorts than the safety of our guests and we remain in contact with guests affected should there be any further support required.’

The swimming pool continues to remain closed at the resort for repairs. While the incident remains under investigation, this certainly isn’t an isolated one when it comes to glass panel pools.

Glass panel infinity pool failure in rooftop condominium pool.

Certainly not the first attention-grabbing pool failure we’ve seen this year. The incident was reminiscent of a similar situation that occurred in a 5th-floor rooftop infinity pool in Whampoa a few years back. Officials said that either a design or construction flaw of that swimming pool caused the pool walls to collapse and the glass panels to suddenly give way.

5/5 - (16 votes)

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Tesla Pool – Automaker Adds Swimming Pool To Charger Station

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Tesla Swimming Pool

One of the primary reasons consumers opt to purchase a Tesla is the robust availability of convenient charging stations. Recently, the automaker has experimented with adding amenities to its charging stations. New cube lounges at a Supercharger station in Germany come equipped with automated coffee, food, and more. Tesla is also adding other options and fun activities for drivers to enjoy while they wait for their vehicles to charge. The newest amenity they’re currently experimenting with is an above ground swimming pool.

A clip of the pool being installed prior to launch was shared with news sources.

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The swimming pool can be used by up to 4 people at a time for 10 minutes, giving folks just enough time to change into their swim suits and enjoy a quick dip while their vehicle charges. There are even Tesla-branded beach balls to play with while they’re swimming in the shipping container style above ground pool.

This promotional popup will open at the Tesla charging station in Hilden, Germany; which incidentally is one of the largest in the country with 40 chargers and 8 superchargers. The pool will be open from Thursday until Sunday. Tesla owners can drop in for a swim from 2:00 p.m. until 7:00 p.m.

What do you think about this idea? Is this something you’d like to see in the United States? Sound off in the comments and let us know.

3/5 - (2 votes)

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