Tag Archives: repairs

Workers repairing the damaged Maui pipeline in New Zealand

Gas supplies to industrial consumers look set to be partially restored this afternoon as workers repair the damaged Maui pipeline in north Taranaki.

Acting Energy and Resources Minister Hekia Parata told a media conference in Auckland this morning there were adequate gas supplies already in the pipeline north of the breach to allow some major gas users – including dairy factories – to be brought back on line.

”But this will rely on as moderate use of the gas as possible – we still need to conserve it,” she said.

Engineers worked through last night carefully excavating the site of the damaged section of pipeline, digging in increments of just 300mm to ensure no further damage would be caused to the Maui line or to a small Vector gas line just 5m away.

Vector CEO Simon McKenzie said it was hoped the excavation work will be completed this afternoon, at which time work can start on replacing the damaged section of line.

The leak appears to have been the result of a failed weld, he said.

”But it is far too premature to come to any conclusions as to why this happened,” Mr McKenzie said, adding that there have been no issues with the Maui line in its 30-year history.

Gas industry experts face a frantic mission today to find and fix a gasline rupture crippling industry in the top half of the North Island.

The Maui gas pipeline, which runs from the Maui production station at Oaonui and feeds gas to much of the North Island, was closed early yesterday morning when a leak was discovered near White Cliffs north of Urenui.

By noon the closure of the line forced 15 of Fonterra’s northern factories reliant on gas to shut down or only partly operate, and Waikato dairy farmers last night began dumping milk.

Other industries also began to suffer and Employers and Manufacturers Association manufacturing manager Bruce Goldsworthy described the situation as “a bloody disaster”.

At this stage residential supplies are not affected.

Hekia Parata, the acting Energy Minister, travelled to New Plymouth for briefings on the crisis.

Last night pipeline operator Vector could not say when gas would be turned back on. Although the leak has been isolated to a section of pipe near White Cliffs, spokeswoman Sandy Hodge did know the extent or type of damage suffered by the pipe.

“For safety reasons a full excavation of the pipe cannot be undertaken until a detailed site evaluation has been carried out. We need to have a careful look at the pipeline before we bring diggers in,” Ms Hodge said.

She said engineers were working on “every scenario they can come up with” on what type of fix the pipe will need so repairing can begin as soon as the fault is understood.

Ms Hodge said the leak had not posed an explosion risk and as far as she knew it was the first time the pipeline had been compromised.

Yesterday residents near the pipeline on Pukearuhe Rd reported hearing a huge roar of gas being vented but little else.

“They were blowing stuff through there today. It made a hell of a noise. A big roar,” said Ian Besley.

“There was a message on my phone from Vector to say they were doing something. They had some sort of problem.”

Mr Besley said he had heard the pipeline being vented in the past and did not think it unusual.

Neighbor Michael Kuriger said Vector called his wife in the morning to say there had been a major leak and they might be flaring off some gas. But it was only the appearance of a Taranaki Daily News car on Pukearuhe Rd that made him think anything unusual might be going on.

“And I saw a truck go down the end of the road with a steel cage arrangement that they might use to protect men working in a hole. But I didn’t think anything of it. I didn’t link that with what my wife said about work from Vector,” Mr Kuriger said.

The high pressure pipeline was opened in 1978 and is owned by Maui Development Ltd.

The section containing the leak has been isolated from production supplies in Taranaki.

MAUI FACTS

The Maui pipeline is the largest-capacity high pressure gas pipeline in New Zealand.

Commissioned in 1973, it runs from the Maui production station at Oaonui to Huntly. At Huntly it is connected to other pipelines that feed gas to thousands of consumers throughout northern North Island.

It is 84cm in diameter, opened in 1978, and is owned by Maui Developments Ltd.

It is operated by gas transmission company Vector.

It does not only carry Maui gas, but gas from all Taranaki’s fields.

SOURCE: http://www.stuff.co.nz/taranaki-daily-news/news/5851498/Workers-repairing-the-damaged-Maui-pipeline

NJ Reservoir Drainage May Affect Local Drinking Water

Officials say water may look, smell differently, but is still safe to drink while the Cedar Grove Reservoir is drained.

While the Cedar Grove Reservoir is drained, workers will go in and repair corrosion damage, inspect its conduits and fix leakage.

The process of draining the reservoir, which is located along Ridge Road, is expected to take three to four months. During that time, water customers in towns supplied by the reservoir may notice some discoloration or changes to the taste of the water, but officials say the water is safe to drink.

The City of Newark owns the reservoir and the city’s Department of Water and Sewer Utilities for the City of Newark along with Mayor Cory A. Booker, explained that the discoloration occurs when valves are opened and closed during the drainage process. The Great Notch reservoir, owned by the Passaic Valley Water Commission and located in Woodland Park, will supply additional water to customers, so there is no interruption in the supply or quality of water while the repair work is being done.

“We are working to upgrade and modernize our water system and to provide residents with the highest quality water supply in the nation,” said Booker. “This repair work will require us to drain and inspect the Cedar Grove Reservoir, which may cause temporary discoloration or a change in the water’s taste. But the water provided will be safe to use.”

City officials say there is a leak in the outlet tunnel and corrosion damage to the 60-inch water main. The main also needs a new valve.

The reservoir provides water for Newark, Belleville, Bloomfield, and some areas of East Orange. Every decade or so, the reservoir is drained and cleaned of debris. Its pipes are inspected, and then it is re-filled. The project is expected to finish on April 30 of next year, according to Township Manager Thomas Tucci, who said the project will not create any issues to residents.

The city has not drained the reservoir since 1990 to perform repairs. Water samples are taken daily from the reservoir and tested to make sure the water quality complies with safe water drinking standards. Discoloration does not make the water unsafe, officials say, but could cause discoloration while washing clothes.

“There may be some slight color changes during the switchover,” said Andrew Pappachen, Director of Operations for the Newark Watershed Conservation and Development Corp. “However, we will ensure the potability by maintaining sufficient chlorine residual in the water. We will be monitoring the water quality more often.”

SOURCE: http://southward.patch.com/articles/reservoir-drainage-may-affect-local-drinking-water

‘Significant corrosion’ on Stillwater Lift Bridge

STILLWATER, Minn. — Temporary load restrictions begin Thursday for the Stillwater Lift Bridge after the discovery of significant corrosion on some of the bridge’s components.

The Minnesota Department of Transportation (Mn/DOT) says crews discovered the corrosion during a regularly scheduled inspection.

“Although the bridge can safely handle day to day traffic, heavy loads will wear the bridge out more quickly,” said Mn/DOT state bridge engineer Nancy Daubenberger. “Restricting the loads before and during the repairs will help prevent damage to the bridge.”

The temporary posting will reduce the legal load limits as follows:

· Single truck, from 28 tons to 24 tons
· Semi-truck, from 40 tons to 28 tons
· Trailer truck, from 40 tons to 28 tons

Mn/DOT crews are expected to begin work on the bridge later this week. Repairs should be finished in one week to 10 days.

Meantime, supporters of a new bridge say this latest development only strengthens their case for going forward with construction.

“It’s yet another wake-up call that we need a new bridge.  It’s an 80-year-old bridge.  July 1st it celebrated its 80th birthday.  You can keep pouring money into it, but it’s going to keep deteriorating,” said Stillwater Mayor Ken Harycki.

Just this week, Gov. Mark Dayton denied a request by 30 environmental groups to consider a plan for a much smaller bridge on the St. Croix river.

Dayton and bridge supporters have argued the latest plan — calling for a $690 million, four-lane bridge — would cause the least harm and enjoys the widest support.

Dayton has said he wants Congress to approve the project by late September or he’ll consider shifting more than $360 million in federal and state funds to other projects. Congress needs to pass an exemption to the U.S. Wild and Scenic Rivers Act.

The bridge is also scheduled for a repair project in fall 2012.

SOURCE: http://www.kare11.com/news/article/934635/396/Significant-corrosion-on-Stillwater-Lift-Bridge

Cincinnati museum center pitches $150M bond

Money would be used 
to help repair the 
80-year-old building.

Union Terminal is literally pushing itself apart.

Officials at the Cincinnati Museum Center went before the Hamilton County Commissioners Monday to ask for a $150 million bond to be put on the November ballot to help repair the 80-year-old building.

The commissioners didn’t say “no” to passing a proposal to the levy review committee, and Cincinnati Museum Center Board Chairman Otto Budig Jr. said they were “receptive to our point of view.”

In an independent study conducted by Cole Russell Architecture and Design at the request of the museum, they found the building is showing signs of “significant accelerated deterioration” as a result of the 1931 construction of the exterior wall system.

Specifically, the lack of internal flashing to expel moisture from the wall system has led to the corrosion of the internal steel I-beams. That moisture allows for the building’s inner structure to expand and bulge, leading to cracks behind the walls of the building’s hallmark original murals. That’s only one example of structural deterioration.

The more cracks there are throughout the building’s façade, the more water moisture seeps in, leading to a further deterioration of the steel I-beams, said Cincinnati Museum Center CEO Doug McDonald.

As a result, repair costs will increase at an exponential rate, McDonald said. And as deficiencies continue they have a compounding effect over time,in causing accelerated deterioration.

McDonald said now is the best time for the $150 million bond to be put on the November ballot.

“It will cost more later if we delay the repairs,” McDonald said. “This is the most cost-effective time to do it as construction costs are lower than they have been in a few years and interest rates are the lowest they’ve been in decades.

“If we miss the opportunity of low costs, then the cost goes up significantly.”

If repairs are delayed to 2016, it will cost upward of $225 million instead, $75 million more than the projected 2011 total, and the museum center is incapable of raising those kinds of funds, McDonald said.

“The public owns the building and we can’t raise that much money,” McDonald said. “It’s not our building, we’re a tenant, and so we need the public to help us with this.”

The bond issue would cost approximately $11 per year for a resident with a $100,000 home, Budig told commissioners on Monday. If voters pass the repair work, it would bring up to 1,200 jobs to the area, McDonald said.

The deadline to put issues on the ballot is Aug. 10 and a spokesperson for Commissioner Chris Monzel said the board is still reviewing the proposal before it the would consider passing it on to county’s review committee.

Although the city, not the county, owns the building, as Monzel pointed out on Monday, McDonald said the county is responsible for repairs.

“The city owns the building, the county owns the improvements, and there is more value in the improvements than the building,” McDonald said. “If you bought a building for a $1 million and you had a partner that put in $10 million into the building, then who owns the building?

“It’s the county’s asset.”

SOURCE: http://www.middletownjournal.com/news/middletown-news/museum-center-pitches-150m-bond-1199719.html