Category Archives: Cathodic Protection

Austal defends work after corrosion reports surface

Austal Ltd. defended its work in response to earlier reports of corrosion issues on the first littoral combat ship built at the company’s Mobile shipyard.

The Australia-based company’s chief executive officer, Andrew Bellamy, told the Sydney Morning-Herald that any corrosion on U.S.S. Independence was the fault of whoever is operating and maintaining it.

“We have built 230 vessels of this type that have not suffered from this type of problem … where the operator and the maintainer of the ship have followed the procedures in a thorough way,” Bellamy told the newspaper. “I suspect there is a problem in the area of operational maintenance if there is a galvanic corrosion issue.”

Bellamy told the newspaper that the issue was a “storm in a teacup” and unlikely to threaten Austral’s contract with the U.S. Navy to build more of the speedy, shallow-water combat ships.

The Navy did not immediately respond to questions today about Independence’s maintenance.

Austal on Friday confirmed media reports that Independence experienced “galvanic corrosion” in its propulsion system.

Chris Johnson, a Navy spokesman said in a written statement Sunday that the Navy blamed the corrosion issue on dissimilar metals used in the ship’s construction.

Austal specializes in aluminum-hulled ships, while the Navy has traditionally bought steel ships.

The problem was discovered in 2010, before the ship was delivered to the Navy, said Jim DeMartini, a spokesman for Maine-based Bath Iron Works. Bath is the prime contractor for the first two littoral combat ships built at Austal, Independence and Coronado, which is set for delivery in summer 2012.

Austal in December won a $3.6 billion contract to act as the prime contractor building 10 more littoral combat ships.

Johnson said that the Navy in 2010 started developing both short- and long-term fixes to the problem. The service will, by the end of July, install “doubler plates” around portions of the Independence propulsion system, which will make it safe to operate in the near future, he said.

Next year, when the ship is dry-docked, the Navy will install a cathodic protection system as a long-term fix to the corrosion problem, Johnson said.

Such an anti-corrosion system is going to be added to Coronado before it is launched, Johnson said. And Austal included the protection system in its prime contracting bid, so no changes to the design of those ships need to be made, Johnson said.

Austal is Mobile’s largest industrial employer with about 2,200 workers at its Mobile River shipyard. It expects to nearly double that number in the next few years as it ramps up construction of both littoral combat ships and high-speed transport ships for the Navy.

In a written statement issued today, Austal officials said the company is “intimately familiar” with how to properly deal with galvanic corrosion. If Austal is chosen by the Navy to provide post-delivery support for its aluminum littoral combat ships, it will be “a straight-forward process” for the company’s engineers to handle such upkeep. Austal said that it has six maintenance hubs worldwide that can handle the work.

“An integral part of any post-delivery support program for a high-performance, high-speed vessel .¤.¤. is to provide a cadre of qualified maintainers who can help our Navy partners,” the statement read in part.

Austal’s statement also said the company wants to be included in the investigation of the corrosion, but has not yet been involved in that process.

SOURCE: http://blog.al.com/live/2011/06/austal_defends_work_after_corr.html

Mike Feuer Calls Upon Public Utilities Commission to Provide Gas Pipeline Safety Information

Feuer Requests Answers to Concerns Raised by Investigation of San Bruno Pipeline Rupture.

Assembly Member Mike Feuer (D-Los Angeles) has asked the California Public Utilities Commission (CPUC) to provide information about the safety of gas pipelines in Feuer’s district after a devastating explosion in San Bruno, California raised questions about the safety of aging pipeline infrastructure.  In a letter dated June 10, 2011, Feuer called for the CPUC’s assistance in obtaining answers to a number of specific concerns identified by the National Transportation Safety Board (NTSB) in its investigation of the pipeline rupture in San Bruno.

“The safety of my constituents is my number one priority, which is why I called on the CPUC to provide answers to a comprehensive set of questions about the safety of the pipelines running through neighborhoods in my district,” said Feuer. “I want to ensure that residents and businesses have the information they need to protect their families and workplaces.”

After the San Bruno disaster, Feuer’s office met with representatives from Southern California Gas Company (SoCalGas), whose pipelines serve most of Southern California, to discuss issues of pipeline safety.  This session, Feuer supported Assembly Bill 56, legislation designating the CPUC as the state authority responsible for the development and administration of a safety program for natural gas pipelines. Feuer’s current request to the CPUC seeks information that would increase transparency and communication between SoCalGas and the communities it serves.

“I am asking for the CPUC’s help to gather information about SoCalGas pipelines to increase public awareness and promote industry practices that will contribute to safer communities,” Feuer stated.

In his letter to the CPUC, Feuer asked a number of specific questions, among them:

  • Has SoCalGas identified all gas transmission lines in the District that have not previously undergone a testing regimen designed to validate a safe operating pressure?
  • What steps has SoCalGas taken to ensure it is basing operating pressures on accurate information contained in its records?
  • Where are the high consequence areas (HCAs) located within the 42nd District?  Have residences, businesses, schools and other institutions been made aware of their proximity to the HCAs?
  • Does each high-pressure pipeline identified by SoCalGas pursuant to the NTSB recommendations have an automatic or computerized shut-off valve?  If not, why not, and when could a plan be developed to install and pay for such valves?

A complete copy of Feuer’s letter to the CPUC can be found here.

The 42nd Assembly District includes all or part of the Los Angeles neighborhoods of Sherman Oaks, Studio City, North Hollywood, Valley Glen, Valley Village, Toluca Lake, Universal City, Griffith Park, West Los Angeles, Brentwood, Bel Air, Holmby Hills, Beverly Glen, Westwood, Century City, Hollywood, Fairfax, Hancock Park, Los Feliz and the Cities of Beverly Hills and West Hollywood.

SOURCE: http://studiocity.patch.com/articles/feuer-calls-upon-public-utilities-commission-to-provide-gas-pipeline-safety-information-to-42nd-district-residents

£3.5 contract awarded for Forth bridge cable corrosion probe

AN INVESTIGATION is to be launched into potential corrosion of the Forth Road Bridge’s main cable anchors.

A £3.5 million contract for the work was yesterday awarded by the Forth Estuary Transport Authority, which runs the bridge, to Graham Construction.This follows ongoing work to dry out the rest of the cable in an attempt to halt corrosion, which has already triggered the building of a new adjacent crossing costing up to £1.6 billion.

The anchorage work is expected to start in August, with 30ft deep excavations at the south end of the bridge taking a year. Inspection work and evaluation of the findings will take a further year.

Chief engineer and bridgemaster Barry Colford said there was no external evidence of any problem, but the work was a “very important investigation into what are critical components of the suspension bridge”.

He added: “It is our responsibility to inspect every part of the structure in order to ensure there are no hidden issues.”

The anchors are concrete-filled tunnels bored into the rock on either shore, where the bridge’s main suspension cables are attached to the ground.

Illinois American Water continues its pipeline replacement program – Aging Infrastructure

The barricades are coming down on Illinois 159 at the Swansea-Belleville  border as Illinois American Water completes the first phase of its $1.6 million water  main replacement and corrosion project.

About  700 feet of 8-inch water main dating from 1958 was replaced at a cost of about $325,000.

The replacement program focuses on replacing mains where leaks occur,  corrosion has caused damage or the size of the pipe isn’t sufficient.

Work on the $1.6 million project is starting up in other parts of the  metro-east as 1.8 miles of two-inch water mains are replaced with six-inch and  eight-inch mains.

The replacement will enhance water quality and water pressure, as well as  fire protection, the company said. The main replacement projects kicked off in  May with the replacement of about 800 feet of water main on Fahey Place in Belleville.

“Water mains are critical to the delivery of water for use by residents,  businesses, manufacturers and fire fighters,” said Grant Evitts, operations  manager for Illinois American’s Interurban District. “While this infrastructure  is underground and out of sight, it is easy to take it for granted, but at  Illinois American Water, we continue to invest to ensure reliability.”

“The age of the pipes coupled with corrosion and sediment accumulation over  the years makes the replacements necessary,” Evitts said. “Illinois American  Water continues to invest annually in its systems to ensure that local water  quality and service continues to be as good as or better than local, state and  federal quality standards.”

SOURCE: http://www.bnd.com/2011/06/14/1747648/barricades-on-illinois-159-in.html#ixzz1PFYN2h7E

TransCanada reopens Keystone oil pipeline

There were no concerns about the integrity of the 1,300-mile Keystone oil  pipeline following a May 29 spill in Kansas, the U.S. government said.

Canadian pipeline company TransCanada restarted the Keystone oil pipeline  during the weekend. The Department of Transportation’s Pipeline and Hazardous  Materials Safety Administration issued a corrective action prohibiting a restart  last week but reconsidered in time for a Sunday restart.

Julia Valentine, a spokeswoman for the PHMSA, was quoted by The Wall Street  Journal as saying there weren’t any concerns about the integrity of  Keystone.

“Every pipeline incident is unique,” she said. “In this case, the failure did  not raise concerns for the integrity of the pipeline.”

Keystone transits around 591,000 barrels of oil per day from Alberta, Canada.  A May 29 leak in Kansas spilled about 10 barrels of oil. There were 11 separate  spills on the pipeline recently though the company said all were relatively  minor.

TransCanada is pushing for a $13.3 billion extension to the pipeline. The  project is scrutinized by regulators and environmentalists who worry about the  potential for spills and uncertainty about the safety of transiting oil from tar  sands in Canada.

SOURCE: http://www.upi.com/Business_News/Energy-Resources/2011/06/06/TransCanada-reopens-Keystone-oil-pipeline/UPI-85081307364816/#ixzz1OaJxzzrS