L&R Corrosion

The L&R Group
Corrosion Services Division

Welcome to L & R Corrosion Services

Since 1996, we have gained a reputation for providing cost-effective solutions to complex corrosion problems. With offices in Idaho and Washington we have designed, installed, and maintain over 500 cathodic protection systems for clients in Idaho, Utah, Nevada, Wyoming, Washington, Oregon and Alaska.

Over the years we have cultivated many long-term relationships and repeat clients. Our clients, from the private, public, and government sectors, value our highly qualified specialists, our attention to quality management and cost control, and our overall responsiveness. Our firm has thrived by approaching each project as a partnership, sharing client concerns, maintaining open and ongoing communications, and striving for solutions that contribute to successful project completion.

The following is a description of some of the projects we have worked on.

1. Consulting / Engineering

  • On how to solve your complex corrosion problems
  • Understanding the many regulations and requirement concerning your underground structures
  • Cost saving benefits of using cathodic protection to lengthen the life of your steel structures.
  • Design of new cathodic protection systems from underground tanks and pipelines to waste treatment
  • plants and dock piers
  • Custom solutions to complex corrosion problems

2. Our Team designs and Installs Impressed or galvanic (sacrificial) systems for these type of systems

  • Underground Storage tanks
  • Aboveground Storage tanks
  • Natural gas pipe lines
  • Petroleum and Oil pipe lines
  • Hydroelectric turbine penstocks
  • Waste water treatment plants
  • Power transmission line towers
  • Dock Piers
  • Bridge Decking and Bridge Footings
  • Wind Turbine anchoring bolts and structures
  • Have a unique application, let us design a system for you.

3. Diagnostic (troubleshooting) on Impressed and sacrificial systems

  • Why replace the whole system when the problem could be small and fixed easily. Our team of experienced technicians can save you money.

4. Repair

  • Big or small, Impressed or galvanic we handle all types of repairs or replacement of existing cathodic protection systems

5. Testing

  • We provide testing services to comply with federal and NACE mandated testing procedures.

Corrosion Issues in Storing Emerging Fuels, including Diesel and Gasoline Blends

Over the past couple decades, many fuel formulations have entered the market and corrosion on the insides of tanks and other UST components not required by law to have corrosion protection has become extremely common. Below we provide information on more recent corrosion risks to UST systems, offer explanations, and discuss potential prevention and responses actions.

Corrosion has been commonly reported in USTs storing diesel fuel and gasoline-ethanol blended fuels. Anecdotes suggest when storing diesel fuel, corrosion generally appears on metal components inside USTs.

When storing ethanol blended fuels, corrosion generally appears in sumps. Instances of this corrosion began appearing about a decade ago.

The federal UST regulation requires UST owners have corrosion protection for their UST systems’ metal components in contact with the ground. But corrosion protection is not required for metal components inside USTs or in sumps. Corrosion in USTs storing emerging fuels does not violate federal UST requirements.

However, UST owners and operators must ensure corrosion does not affect the functionality of their equipment. If UST equipment does not function as intended, it may violate the federal UST regulation or lead to releases into the environment. Owners and operators should contact their state UST implementing agencies because they may have requirements that differ from the federal regulation.

(source https://www.epa.gov/ust/emerging-fuels-and-underground-storage-tanks-usts#tab-3)

Corrosion of Internal Components in USTs Storing Diesel Fuel

EPA conducted research on 42 actively operating underground tanks storing diesel fuel at facilities all across the United States and found that 83 percent (or 35 USTs) exhibited moderate or severe corrosion of metal components inside the tank system. EPA’s July 2016 report discusses that research. Industry provided invaluable assistance to EPA in research design, operational coordination, and report reviews over the course of the research effort. EPA will continue to coordinate with industry to understand the corrosion issue and identify solutions.

EPA cannot project the actual percentage of USTs storing diesel that are affected by corrosion nationwide. However, this could be a widespread and potentially significant problem for owners of underground tanks storing diesel fuel.

The corrosion may cause metal components inside both steel and fiberglass UST systems to corrode. This can possibly shorten the lifespan or affect the serviceability of components, including limiting the movement of floats on automatic tank gauging systems, operability of mechanical devices designed to prevent the chance of overfilling the tank, or ability of shear valves to shut off flow of product in the event of a release. Corrosion may cause dispenser filters to clog and be replaced more frequently and could potentially limit the proper functionality of equipment designed to test for leaks in fuel product lines. EPA recommends UST owners check for corrosion in their tank systems storing diesel fuel, and if they find corrosion, repair or replace equipment as necessary to ensure proper functionality.

Products These are a portion of the products L&R uses when providing our Corrosion services.

Impressed Current Anodes
Graphite
High Silicon Cast Iron
Mixed Metal Oxide
Platinum
Sacrificial Anodes 
Hi-Potential Magnesium
Aluminum
Zinc
Accessories
Thermoweld Materials and Equipment
Pipeline Tapes and mastic
Pipeline Markers
Test Stations
Link Seals, Casing Insulators
Insulating Unions and Flange Kits
Junction and Bond Boxes
Rectifiers
Standard Air Cooled
Oil Immersed
Constant Current
Automatic Potential Controlled
Custom Designed
Remote Monitoring
Backfill
Loresco (Calcined Petroleum)
Great Lakes (Petroleum-50# Bags)
Metallurgical (50# Bags)
Environmental Hole Seal
CP Cable
HMWPE
Permarad
Halar
TW & THHN Sol/Str Wire
Instruments
Nilsson
Metrotech
M.C. Miller
Tinker & Rasor
Fluke
Wavetek
Radio Detection
Splice Materials
Scotch Cast
3M Tapes
Electrical Coating
Compression Connectors
Compression Tools
Split Bolt Connectors

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