PageSummer Archives - Page 8 of 9

Pool, Spa & Recreational Waters

“Innenansicht des Kaiserbades in Aachen” | Jan Luyken (1682)

Education communities provide a large market for recreational and therapeutic water technology suppliers. Some of the larger research universities have dozens of pools including those in university-affiliated healthcare facilities. Apart from publicly visible NCAA swimming programs there are whirpools in healthcare facilities and therapeutic tubs for athletes in other sports. Ownership of these facilities requires a cadre of conformance experts to assure water safety.

NSF International is one of the first names in this space and has collaborated with key industry stakeholders to make pools, spas and recreational water products safer since 1949. The parent document in its suite is NSF 50 Pool, Spa and Recreational Water Standards which covers everything from pool pumps, strainers, variable frequency drives and pool drains to suction fittings, grates, and ozone and ultraviolet systems.

alamance-building-2560x800 elon university fountain north carolina summer water needs attribution 1917 719

Berry-College-Cascade-Nozzles-Waterfalls-1 roman fountains needs attribution 1921 719

USC International Accelerator Program carolina swimming pool facebook 1921 721

Legacy_Fountain_of_Florida_State_University wiki 1921 719

Tanner_Fountain_Harvard_University_-_IMG_9014-1-1921-721

Hamamatsu Technical High School pool international 1919 719

UA - Universitat d'Alacant Universidad de Alicante spain international fountain facebook cover 1920 721

The workspace for this committee is linked below:

Joint Committee on Recreational Water Facilities

(Standards Michigan is an observer on this and several other NSF committees and is the only “eyes and ears” for the user interest; arguably the largest market for swimming pools given their presence in schools and universities.)

There are 14 task groups that drill into specifics such as the following:

Chemical feeders

Pool chemical evaluation

Flotation systems

Filters

Water quality

Safety surfacing

The meeting packet is confidential to registered attendees. You may communicate directly with the NSF Joint Committee Chairperson, Mr. Tom Vyles (admin@standards.nsf.org) about arranging direct access as an observer or technical committee member.

Almost all ANSI accredited technical committees have a shortage of user-interests (compliance officers, manufacturers and installers usually dominate). We encourage anyone in the education facility industry paying the bill for the services of compliance officers, manufacturers and installers to participate.

We maintain this title on the standing agenda of our Water and Sport colloquia. See our CALENDAR for the next onine meeting; open to everyone.

Fullerton College

Issue: [13-89]

Category: Water, Sport

Colleagues: Mike Anthony, Ron George, Larry Spielvogel

More

Model Aquatic Health Code

IAPMO Swimming Pool & Spa Standards

UL 1081 Standard for Swimming Pool Pumps, Filters, and Chlorinators | (UL Standards tend to be product standards so we rank them lower in our priority ranking than interoperability standards.)

Aquatic Health Code

Exploration of the Theory of Electric Shock Drowning

Jesse Kotsch – Brandon Prussak – Michael Morse – James Kohl

University of San Diego

Abstract: Drowning due to electric shock is theorized to occur when a current that is greater than the “let go” current passes through a body of water and conducts with the human body. Drowning would occur when the skeletal muscles contract and the victim can no longer swim. It is theorized that the likelihood of receiving a deadly shock in a freshwater environment (such as a lake) is higher than the likelihood in a saltwater environment (such as a marina). It is possible that due to the high conductivity of salt water, the current shunts around the individual, while in freshwater, where the conductivity of the water is lower than that of the human; a majority of the current will travel through the individual. The purpose of this research is to either validate or disprove these claims. To address this, we used Finite Element analysis in order to simulate a human swimming in a large body of water in which electric current has leaked from a 120V source. The conductivity of the water was varied from .005 S/m (pure water) up to 4.8 S/m (salt water) and the current density through a cross sectional area of the human was measured. With this research, we hope to educate swimmers on the best action to take if caught in such a situation.

CLICK HERE to order complete paper.

Marina & Boatyard Electrical Safety

Facilities Management

Engineering in Sport

Bibliography

Sprint time differences between single- and dual-beam timing systems

Sprint Running Performance Monitoring: Methodological and Practical Considerations

Comparison of Three Timing Systems: Reliability and Best Practice Recommendations in Timing Short-Duration Sprints

Readings / Sport, Culture & Society

Maths and Sport

Fruit Smoothie

West Virginia University Financial Statement 2022 | $1.178M

The WVU Extension is a primary outreach division of West Virginia University. With offices in each of the state’s 55 counties, Extension faculty and staff develop and deliver programs in leadership development, rural and community-based economic development, youth development, workforce development, and health education.

Ingredients

3 cups frozen strawberries or other frozen fruit
1 banana
1 cup yogurt (plain or vanilla)
1 handful spinach or kale
2 cups of milk

Directions

Wash fresh produce.
Collect and measure all ingredients before starting recipe.
Add the fruit, yogurt and greens to the blender.
Pour the milk into the blender.
Blend 30 to 45 second until smooth.
Refrigerate leftovers within two hours, and finish within two days.

Nutrition information per serving (recipe makes six one-cup servings):
Calories — 120; fat — 2g; carbohydrates — 21g; fiber — 2g; protein — 5g

Geoffrey Hinton & Joel Hellermark

This conversation was recorded in April 2024 at the Royal Institute of Great Britain in London. An edited version was premiered at Sana AI Summit on May 15 2024 in Stockholm, Sweden.

Geoffrey Hinton has been called “the godfather of AI” and is considered one of the most prominent thought leaders on the emergence of artificial intelligence. He has served as a faculty member at Carnegie-Mellon and a fellow of the Canadian Institute for Advanced Research. He is now Emeritus Professor at the University of Toronto. In 2023, Geoffrey left his position at Google so that he could speak freely about AI’s impact on humankind.

Fun fact: University Park is located right next to Smoothie King! 🥤 pic.twitter.com/Gmrlb2nKPb

— WVU University Apartments (@WvuApartments) September 15, 2023

Students living off campus can purchase Go plans, or any of our Prime and Dining Dollars-only plans that are available to be used at all of our retail or residential dining locations on campus.

Read about all of our plans here! ⬇️https://t.co/TxouPEuFTl pic.twitter.com/8Ga5pKADAk

— WVU Dining (@WVUDining) March 10, 2022

The Eternal Music

“Heard melodies are sweet,
but those unheard are sweeter…”
John Keates (Ode on a Grecian Urn)

Click image

Lively Arts 300

History of Western Civilization Told Through the Acoustics of its Worship Spaces

Arboreta

“On Holiday (Girl resting on the grass)” 1879 Kuznetsov Nikolai Dmitrievich

University of Michigan Matthaei Botanical Gardens

St. John’s University

University of Florida

Harvard University

Lunds universitet Scania

Swarthmore College Pennsylvania

Ruhr-Universität Bochum

Anglo-americká vysoká škola, z.ú. Czech Republic

Michigan State University

University of the Ozarks

Freie Universität Berlin

Kent State University

Uniwersytet Warszawski

Nanyang Technological University, Singapore

Bard College / New York

Michigan State University Healing Garden

Japanese Garden | Normandale Community College Minnesota

东北师范大学 | Northeast Normal University | Changchun, Jilin, China

University of Michigan | Matthaei Botanical Gardens

Shenandoah University | Winchester, Virginia

Princeton University Secret Garden | Photo by Sarah Ly

King’s College | London, United Kingdom

École Normale Supérieure | Paris, France

Arizona Cactus Garden | Stanford University

Duke University / North Carolina

Oxford University

University of Minnesota Landscape Arboretum

University of Helsinki Botanical Garden

University of Notre Dame / South Bend, Indiana

University of Tromsø the Arctic University of Norway

Florida Tech Botanical Garden

University of Nottingham

Smith University Botanical Garden

Aarhus University | Denmark

High Point University | North Carolina

Universiteit Stellenbosch | Western Cape, South Africa

Louisiana State University

Albert-Ludwigs-Universität Freiburg

Rutgers University

Great Court University of Queensland Australia

University of Oklahoma

Wageningen University | The Netherlands

More

Bucolia 300

Trees

Nursery Stock

Pool, Fountain, Agriculture & Water Infrastructure Electrical Safety

2026 National Electrical Code Workspace

“The Bathing Pool” / Hubert Robert (French, 1733–1808) / Gift of J.P. Morgan

Education communities have significant assets tied up in swimming pools, immersion pools, fountains, hydro-therapy installations (in hospitals and athletic training facilities) and flood control facilities (in congested, non-permeable parts of urban campuses) we have been keeping an eye on leading practice discovery for these installations in the 2020 National Electrical Code.

With electrical safety — i.e. shock protection — as the focus of this post*, the relevant parts of the 2020 NEC reside in Articles 680 and 682 are described below:

Article 680 applies to the construction and installation of electrical wiring for, and equipment in or adjacent all swimming, wading, therapeutic and decorative pools, fountains, hot tubs, spas and hydromassage bathtubs, whether permanently installed or storable, and to metallic auxiliary equipment, such as pumps, filters, and similar equipment. The term body of water used throughout Part I applies to all bodies of water covered in this scope unless otherwise amended.

Article 682 applies to the installation of electrical wiring for, and the equipment in and adjacent to, natural or artificially made bodies of water not covered by other articles in the NEC, such as, but not limited to aeration ponds, fish farm ponds, storm retention basins, treatment ponds and irrigation (channel facilities. Water depths may vary seasonally or be controlled.

When the 2020 NEC is released there will be hundreds (more like thousands) of experts who make their living on each NEC revision fanning out across the globe able and ready to interpret, advise and train. We are not primarily a code training enterprise but we do get down into the weeds of electrical safety technical discussion where leading practice discovery discussion is recorded:

~~2020 NEC Article 680-682 Public Input | Pages 240 – 501~~

~~2020 NEC Articles 680-682 First Draft Report | Page 59 – 152~~

~~2020 NEC Articles 680-682 Public Comment Report~~

~~2020 NEC Articles 680-682 Second Draft Final Ballot~~

Transcripts superseded. We refer to the 2026 Workspace linked at the top of this page.

We find interest in corrosion control, water bottle fill stations, water heating technologies, LED illumination as well as the usual editorial, correlation and concepts movement between articles. From these transcripts it should also be plain that grounding and bonding practice, GFCI protection, luminaire location and wiring, corrosion management continue to be of primary interest in electrical safety assurance. Related safety concepts appear in NFPA 70B and NFPA 70E. Anything having to do with water; or the areas around water, are regions of elevated risk.

We are happy to discuss electrical safety standards any day at 11 AM Eastern time and host a monthly breakout teleconference dedicated to Electrical Power Safety in education facilities. See our CALENDAR for the next online meeting. We also collaborate closely with the IEEE Education & Healthcare Facilities Committee which meets online four times monthly in European and American time zones.

Issue: [16-102]

Category: Electrical, Risk Management, Water,

Colleagues: Mike Anthony, Jim Harvey, Kane Howard

*We leave the technical specifics of footcandle distribution to another, future post.

LEARN MORE:

2017 NEC changes for electrical safety in swimming pools

2020 NEC Changes (All Articles)