Pool News
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.
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.
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.
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.
Pool News
French Diver Makes Splash After Flop At Opening of Olympic Pool
French Olympic diver, Alexis Jandard, created a memorable moment at the grand opening of Paris’s new Olympic pool, though not quite in the manner he had envisioned.
A startling video captured during the inauguration of the state-of-the-art Paris Aquatics Center on Thursday showcased the 26-year-old Olympian’s unfortunate landing on his right foot while gearing up to dive alongside two fellow athletes. Adorned in a Speedo reflecting the hues of the French flag, Jandard’s discomforting descent saw him landing on his back, ricocheting off the nearly 10-foot-high dive board, and somersaulting into the pool in a rather ungraceful manner.
The incident unfolded in front of a sizable crowd of onlookers, including French President Emmanuel Macron and various dignitaries. Jandard later displayed his scraped back on his Instagram account, maintaining a light-hearted approach to his embarrassing mishap by quipping, “For your information, my back is fine, but my ego…”
Sharing a photo of his reddened back, courtesy of the encounter with the diving board, on Instagram Stories, Jandard assured followers of his well-being. Speaking to RMC Sport, he recounted the unexpected turn of events, stating, “I’m fine. I didn’t hurt myself; unfortunately, these things happen. It happened at a time when I wasn’t expecting it at all.”
Reflecting on the incident, Jandard humorously noted, “I’ve broken boards before, but the board had never broken me before. Now it has.” Despite the hiccup, he maintained an optimistic outlook, remarking, “I would have preferred this ceremony to have gone well from A to Z. There was that little hitch. If it made people smile a little, so much the better.”
Explaining the mishap, Jandard clarified that his leg gave way upon landing but denied any slippage, emphasizing, “It’s a non-slip [board], and what’s more, the board was new, beautiful, and I think there’s still [some of] my back on the board there.”
With a silver and bronze under his belt at the 2022 and 2023 World Aquatics Championships, respectively, Jandard took the incident in stride, admitting, “It’s a shame, but it’s funny. When you take a step back, it’s funny.”
Looking ahead to the 2024 Paris Games this summer, where he is set to compete, Jandard acknowledged the inevitability of such occurrences in his sport, jesting, “These things happen,” while playfully lamenting, “It had to happen in front of the president and the whole of France. I think we chose the right moment.”
Despite being inundated with supportive messages and playful jabs, Jandard maintained a good-natured stance, urging his followers on Instagram, “Enjoy yourselves, make fun of me. I seriously deserve it!”
Pool News
Earthquake in Taiwan Causes Waterfall From Rooftop Pool
A massive earthquake in Taiwan transforms a rooftop pool into a waterfall. View viral footage.
In a harrowing turn of events, Taiwan was struck by a powerful 7.4 magnitude earthquake, leaving devastation in its wake. The quake, the strongest to hit the island in 25 years, shook the east coast of Taiwan, particularly affecting the city of Hualien and its surrounding areas. With a depth of 34.8 kilometers, the epicenter of the earthquake was located 18 kilometers south of Hualien, according to the US Geological Survey.
As rescue efforts are underway to free those trapped under rubble and debris, the toll of the disaster continues to rise. At least nine individuals have lost their lives, while over 900 others have sustained injuries. The aftermath of the earthquake has left over 100 buildings damaged, with reports of landslides and collapsed structures adding to the chaos.
The force of the quake was so immense that it caused a surreal sight—a rooftop swimming pool overflowing and cascading down the side of a building, creating an impromptu waterfall. Footage captured during the earthquake also shows the sheer force as a man inside a pool struggles to maintain balance, the water swaying violently from side to side.
The region of Hualien County, with a population of approximately 300,000, faces immense challenges in assessing the full extent of the damage. Many inhabitants reside in remote coastal or mountain communities, making it difficult for rescue teams to reach them promptly. The precarious situation is exacerbated by the expectation of aftershocks, with 29 aftershocks greater than a magnitude of 4.0 already recorded near the epicenter.
Compounding the crisis are reports of miners trapped in two mines in Hualien, adding urgency to the rescue operations. Furthermore, over 91,000 households are grappling with power cuts, amplifying the difficulties faced by residents in the aftermath of the disaster.
Despite the widespread destruction, medical facilities in Taiwan’s capital, Taipei City, are functioning, albeit damaged. The Municipal Government has confirmed that hospitals are operating normally, providing critical care to the injured.
The international community has responded swiftly to the catastrophe, with the Biden administration monitoring the situation closely and expressing readiness to offer assistance. In the face of adversity, Taiwan is rallying its resources and resilience, demonstrating solidarity and resolve in confronting this natural disaster.
As the dust settles and the extent of the damage becomes clearer, questions arise about the effectiveness of early warning detection systems in mitigating the impact of natural disasters. Despite Taiwan’s investment in advanced seismic technology, including early warning systems designed to provide crucial seconds of alert before an earthquake strikes, many residents were caught off guard by the sudden and violent tremors. Reports indicate that the early warning detection system, while operational, did not reach a significant portion of the population in time to take preventive action
Pool News
Patent Pending Apple Watch SOS Feature Could Prevent Drownings
A forthcoming feature potentially destined for the Apple Watch, as detailed in a recent patent application, could serve as a lifesaver for swimmers at risk of drowning.
Outlined in the patent is a capability for the Watch to identify “irregular behavior” and automatically trigger a distress call for assistance.
Apple underscores the alarming statistics surrounding drowning, particularly its prevalence among children, as a leading cause of accidental fatalities.
In the United States alone, drowning claims the lives of over 3,500 individuals annually, ranking as the fifth most common form of accidental death. Tragically, a significant portion of these victims are children.
Emphasizing the critical importance of swift intervention during water emergencies, Apple highlights the dire consequences of prolonged submersion without resuscitation, which can result in brain damage and ultimately, drowning.
A Growing Need For Cost-Effective Wearable Solutions
While acknowledging existing underwater camera systems in some swimming pools aimed at detecting distressed swimmers and alerting lifeguards, Apple notes their costliness and unreliability.
Consequently, there’s a pressing need for a simpler, more cost-effective drowning prevention solution suitable for all types of water bodies, including public and private pools, as well as natural settings like lakes and ponds where installing underwater cameras is impractical.
The patent proposes leveraging wearable devices such as the Apple Watch for broader applicability, increased reliability, and the ability to detect various types of emergencies.
Alerting When Swimmers Are In Distress
For instance, if the Watch detects a wearer who is not proficient in swimming entering deeper water, it can promptly dispatch an alert instead of waiting for signs of distress.
These alerts can be transmitted to nearby devices, including those of friends and family, and seamlessly integrate with existing drowning detection and alarm systems to ensure lifeguards are promptly notified.
Apple Watches already boast capabilities to detect and respond to falls, vehicle accidents, and cardiac irregularities. Heartwarming testimonials featured in Apple’s “Dear Apple” video series show individuals whose lives were saved by these functionalities.
As with many patents from Apple, it’s important to note that not all concepts may materialize into actual products. Nonetheless, this innovation stands as a promising addition for potential integration into future watchOS updates.
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