Tag Archive for: Water Infrastructure

Technology-Asset Management-Pipelines

Pipelines Assessed in Record Time with Latest Technology

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The San Diego County Water Authority’s asset management team recently celebrated the completion of a comprehensive condition assessment of more than 27 miles of the agency’s oldest pipelines. The assessment was performed in record time over just 16 months.

The work was part of a package of rehabilitative efforts on a portion of the First Aqueduct, which includes Pipelines 1 and 2 in North San Diego County. Built in 1947 and 1952, the two pipelines deliver treated water to the region and were constructed using various materials, including reinforced concrete and steel.

Proactive asset management team makes critical repairs

As the pipelines were inspected, areas that required immediate attention were identified and repaired, thereby minimizing future disruptions to water service and impacts to the surrounding environment. Sections of the pipelines requiring future repairs were added to a list of upcoming projects prioritized by the risks and associated costs.

“The asset management team took advantage of scheduled pipeline shutdowns, and with careful coordination, assessment work was performed concurrently with other major rehabilitation efforts in the region,” said Martin Coghill, operations and maintenance manager at the Water Authority. “This innovative approach saved time and avoided unnecessary disruptions in service to our member agencies.”

Throughout the condition assessment process, Water Authority staff worked closely with staff from member agencies to coordinate work being performed in their service areas and any potential impacts. Proactive repairs are crucial to ensuring the reliability of the regional water supply.

Collaboration with multiple contractors to perform complex work

In 2016, a search was conducted to find the best technologies to perform critical assessments to maintain the reliability of the pipelines. It resulted in a multi-technology, multi-contract approach.

The Water Authority partnered with multiple contractors to perform the complex work:

  • Diakont, based in Carlsbad, Calif., used its robotically-mounted technologies to inspect steel pipe sections. High-resolution LASER Profilometry and Electromagnetic Acoustic Transfer technology located internal and external corrosion defects that were then repaired by welding steel patches on the inside of the pipe. This method avoided costly excavations and environmental impacts.
  • Pipeline Inspection and Condition Analysis Corp., based in Edmonton, Alberta, brought its sophisticated Remote Field Technology to San Diego County to scan most of the reinforced concrete pipe using an innovative tool that moved through the pipe at a controlled speed. The technology had been previously used by the Water Authority and consistently demonstrated a high level of accuracy.
PICA, remote field technology, pipeline inspection

PICA uses cutting-edge Remote Field Technology to scan pipelines at a controlled speed with high accuracy. Photo: San Diego County Water Authority

  • Pure Technologies, a Xylem company with an office in San Diego, deployed its Near Field and Remote Field electromagnetic inspection tools to assess portions of the reinforced concrete pipe. With a focus on lightweight components, both tools were successfully conveyed through the pipelines using personnel with rope and pulley support.
technology, pipeline inspection, Pure Technologies

Pure Technologies’ innovative tool uses electromagnetic technology to assess reinforced concrete pipelines using personnel with rope and pulley support. Photo: San Diego County Water Authority

The focus on the Water Authority’s First Aqueduct is the latest chapter in the agency’s long-running strategy to assess critical pipelines and ensure the maximum lifespan is achieved with the most cost-effective methods. Proactive asset management efforts first began in the 1990s and were consolidated into the Asset Management Program in 2009. To date, more than 150 miles of the Water Authority’s total 310 miles of large-diameter pipelines have been assessed using cutting-edge technologies.

The asset management team collaborates with local, national and international organizations in the asset management and water infrastructure fields, focusing on knowledge sharing and asset life optimization.

$130 Million California Commitment to Safe Drinking Water

/in , , /by /Patch (Alameda)

An ambitious spending plan to shore up hundreds of failing and “at risk” California water systems won approval Tuesday from a key state regulatory agency.

In a unanimous vote, the State Water Resources Control Board authorized a plan to spend up to $130 million in fiscal year 2020-2021 through the newly created Safe and Affordable Drinking Water Fund.

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Central Arizona Housing Boom Tees Up Opportunity for Water Investors

/in , , /by /Cronkite News (Arizona)by Bret Jaspers

Central Arizona has been booming – more people, more houses, more need for water. There’s also a long-term drought and less water to buy from the Central Arizona Project canal system. It’s leading Phoenix exurbs to cast about, looking for new buckets.

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$20 Million Funding Opportunity to Strengthen America’s Water Infrastructure

/in , , /by /The CW Houstonby Ronnie Das

A federal funding opportunity was announced on June 30th to improve the water and wastewater treatment infrastructure. The U.S. Department of Energy’s Office of Energy Efficiency and Renewable Energy is providing $20 million for innovations that “strengthen America’s water infrastructure and enable advanced water resource recovery systems that have the potential to be net energy positive.”

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Temperance Flat Dam Put on the Shelf Indefinitely

/in , , /by /GV Wire (Fresno)by Lois Henry

An investment analysis that looked at how much it would cost water users to build and operate the proposed Temperance Flat Dam northeast of Fresno without government funding was finished earlier this year and quietly passed among water districts, which just as quietly asked the federal government to shelve work on the project.

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Damming Up Water Progress Throws California’s Future Into Limbo

/in , /by /The Sun (Central Valley)by Wayne Western

Get ready… here comes the true California water cycle: It begins with headlines and quotes warning of pending disaster based on what could, might, maybe, or possibly happen over the state’s water infrastructure.

It follows with attacks against a single water district, then moves to a concerted effort to convince the average Joe that making a profit in farming and being successful should be accompanied by deep regret and guilt.

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Fallbrook PUD Board Members Tour Construction Project

/in , , /by /Water News Network
As a result of the coronavirus pandemic, public agencies have found creative solutions to holding meetings in compliance with the State of California’s meeting laws. Recently, Fallbrook Public Utility District board members stepped away from their video screens, using the opportunity to take a field trip to view a new project while conducting a traveling board meeting.
The Santa Margarita River Conjunctive Use Project is a joint project with Marine Corps Base Camp Pendleton, and will eventually supply about 30% of the District’s water, and virtually all of Camp Pendleton’s water.
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In Letter To Congress, Water Agencies Call For Drinking Water Relief Funding

/in , , /by /Valley Public Radio - Central Valleyby Kerry Klein

In March, the COVID-19 relief bill known as the CARES Act set aside $900 million to help Americans pay their utility bills. Earlier this week, a broad coalition of water agencies delivered a letter to Congress advocating for more funding. The letter, submitted Monday to House Speaker Nancy Pelosi, Minority Leader Kevin McCarthy and other California Congressional delegates, argues that billions of federal dollars are still needed for water infrastructure maintenance and assistance with water bills.

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Proposals to Watch in Democrats’ Infrastructure Behemoth

/in , , /by /E&E Newsby Jeremy Dillon and Geof Koss

House Democrats yesterday unveiled the details of a massive $1.5 trillion infrastructure package that has several sections focused on energy and environmental priorities. H.R. 2 and its 2,309 pages of provisions may become the most significant action taken by the House to promote a clean energy and climate-focused economic transformation this Congress.

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The Sweetwater Authority will use innovative technology to flush all 400 miles of its system pipelines. Pnoto: Sweetwater Authority

Sweetwater Authority Taps Innovative Technology to Ensure Water Quality

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The Sweetwater Authority recently began a multiyear water main flushing program using innovative technology to clean all 400 miles of pipeline in its system. It’s part of Sweetwater Authority’s use of the latest technology to deliver a safe, reliable water supply to its South San Diego County customers.

Water main flushing cleans pipeline interiors by sending a rapid flow of water through them. Sweetwater’s program is the first in the region to use a new, innovative technology resulting in less environmental impact.

“We’re committed to providing our customers with high-quality water, ensuring that every drop meets safety standards and protects public health,” said Tish Berge, Sweetwater Authority general manager. “We’re also dedicated to providing the safe, reliable water through the use of best available technology and sustainable practices.”

See the system in action in the following video. A Spanish language version is also available.

New method avoids storm drain discharge

Traditional flushing methods release water from fire hydrants at a high speed in order to flush out naturally occurring sediments accumulating in water pipes over time. Although the sediment itself is harmless, it can eventually affect water color and taste. The water used to clean the pipes often cannot be captured and ends up in the storm drain system.

The bulk of Sweetwater Authority‘s flushing program now eliminates the need to discharge water from fire hydrants during the cleaning process while delivering the same results.

With the closed-loop system and increased controls, crews are able to effectively and thoroughly flush large sections of pipeline with a single setup and staging area. This more efficient setup is less labor-intensive and allows the crew to maintain a safe hub for operations. Photo: Sweetwater Authority

With the closed-loop system and increased controls, crews are able to effectively and thoroughly flush large sections of pipeline with a single setup and staging area. This more efficient setup is less labor-intensive and allows the crew to maintain a safe hub for operations. Photo: Sweetwater Authority

Crews identify all pipes, valves, and fire hydrants located in the area to be flushed. Next, crews connect one end of a hose to a hydrant and the other end of the hose to the no discharge, or NO-DES flushing unit. The process repeats, connecting a second hose to another hydrant and the other end back into the flushing unit, creating a temporary closed loop.

Once the NO-DES flushing unit is turned on and the hydrants are open, water will push through the loop at high pressure, disrupting any accumulated sediment on the inside of the pipes. The water is pushed through a series of sock-like filters, which remove those sediments and return clean, high-quality water back into the system.

Crews closely monitor the filtration system and water quality to determine when flushing of each pipeline segment is complete.

Innovative technology, efficient and environmentally responsible

Additional member water agencies have indicated an interest in the cost-effectiveness of purchasing the NO-DES flushing units for the region and collaborating to create a shared-use program with the technology. Photo: Sweetwater Authority

Additional member water agencies have indicated an interest in the cost-effectiveness of purchasing the NO-DES flushing units for the region and collaborating to create a shared-use program with the technology. Photo: Sweetwater Authority

With the closed-loop system and increased controls, crews are able to effectively and thoroughly flush large sections of pipeline with a single setup and staging area. This more efficient setup is less labor-intensive and allows the crew to maintain a safe hub for operations.

In the National City area 75.8 miles of pipeline was recently flushed. Crews are now completing work in the Bonita area, and then will start work in Chula Vista.

Additional water agencies have indicated an interest in the cost-effectiveness of purchasing the NO-DES flushing units for the region and collaborating to create a shared-use program with the innovative technology.

“Securing a local water supply to ensure the water delivered is of the highest quality through the best technology in our projects and programs helps to maximize value for our customers while also being sustainable,” said Berge.

For more information on the program, go to www.sweetwater.org/flushing.