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Protecting Filter Gallery Pipes for Water Treatment Plant

When rust, corrosion and coating system failure became apparent on pipes in the filter galleries of the Lafayette Utilities Systems (LUS) water treatment plant, a rehabilitation plan was developed. One of the most important aspects of this plan was to prepare the carbon steel surfaces and create the proper anchor profile for the new coating system. Depending on the severity of the rust and corrosion on various pipe sections, the specifications called for either near white metal blast cleaning or commercial blast cleaning.

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Renovation and Concrete Structural Reinforcement at NOLA's World Trade Center

The historic World Trade Center New Orleans is a focal point of the vibrant downtown landscape. Designed by noted architect Edward Durell Stone in the 1960s, the skyscraper is located in the heart of the New Orleans business district and on the Mississippi River. The building formerly housed numerous foreign consulates and was the headquarters for the Port of New Orleans.

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What Certifications Earn Abatement Contractors More Projects?

Commercial coatings specialists involved in deleading and are yearning for larger contracts might find themselves looking to become more highly certified. Increasingly, large public and private entities (including oil companies, departments of transportation, and public utilities) insist contract bidders possess additional certifications from organizations such as SSPC (The Society for Protective Coatings). SSPC certifies both companies and individuals, verifying contractor organizations with defined knowledge and procedures.

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A Guide to Removing Rubberized and Polyurea Coatings

Typically applied thick, polyurea and rubber coatings are notoriously hard to remove. Regular abrasive blasting methods are rarely effective in removing these coatings. Abrasives like garnet and coal slag bounce off these surfaces causing them to heat and become gum-like with little removal. This burned residue should not be coated over and would normally require further surface preparation. To avoid these issues, specifiers, contractors and facility owners have three options for polyurea and rubber coating removal.

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How to Blast Plasma Cut or Flame Hardened Steel

Surface cleanliness and profile are the cornerstones of proper surface preparation, but those standards are not always met. Frequently, metal fabrication projects suffer from bad surface prep. When steel is cut with flame or plasma, the edges that have been cut become harder than the middle part of the steel. This creates challenges for those trying to follow coatings application best practices.

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Why Pre and Post Project Surveys are Critical for Lead Jobs

Imagine for a moment that ACME Coatings Contractor has recently completed an important water tank exterior coatings project. The job, which involved removing lead-based paint from the 40 meter (135-ft) tall, 3.7-million liter,legged tank, went well from start to finish. The owners are happy, final payment has been rendered, and the project manager is filing the last bit of paperwork when the owner’s representative calls and asks, “Out of curiosity, how can we be sure that ACME didn’t leave lead dust under or around the tank?”

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Abrasive Nozzles: A Short History

B. C. Tilghman: The Father of Sandblasting and Abrasive Nozzles

The process of sandblasting as we know it today started around 1870 with a man named Benjamin Chew Tilghman, who observed abrasive wear on wind-blown desert windows. Tilghman also noticed the effect that high-velocity sand could have on hard material and began designing a machine that could propel sand at speeds much faster than the wind - and could concentrate this flow into a small stream.

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How Boston's Longfellow Bridge Was Reborn

The historic restoration of Boston's Longfellow Bridge is now complete! The large-scale granite restoration project included onsite blasting by United Stone, as well as dismantling the bridge’s iconic Rockport granite “salt and pepper” towers piece-by-piece, and then transporting them to nearby workyards in Charlestown via barge for offsite restoration. The now pristine towers were reassembled using a mix of modern and historic construction technology. Skilled masons at United Stone were able to clean ornate granite carvings as well as the large granite blocks using the same equipment and media.

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A Guide to Commercial Marine Repair Near Water

Shipbuilding and marine repair is frequently heavy, hard industrial work. Manufacturing is loud and can get dirty. In a marine environment like a ship yard (which can include one or more dry docks) this process must occur within close proximity to water, posing unique challenges regarding containment and suppression of dust during the building and repair process.

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How to Fit Test a Respirator

Take a deep breath and consider the following: Every worker required to wear a tight-fitting respirator on the job needs a respirator fit test. In the United States and many other countries, respirator fit tests are law. This law even applies to disposable N95 particulate respirator masks. A respirator fit test, typically conducted in a controlled environment, is markedly different than the quick “seal check” performed whenever a worker puts on a respirator.

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