The First Word in Protective & Marine Coatings

A Product of Technology Publishing / PaintSquare
JPCL | PaintSquare News | Durability + Design | Paint BidTracker

October 18 - October 31, 2010

When we use field splice plate connections on structural steel projects, how do we prevent rust and rust staining at bolt heads and at the splice plate/steel interface?

Selected Answers

From David Grove of Shaw Nuclear Power Services on October 28, 2010:
Your question does not define the stage of your project or the exposure conditions. This response is based on severe exposure. If still in fabrication, order the steel coated with coatings that meet slip critical criteria. Most inorganic zinc-rich coatings meet this requirement. If bolts are not High Strength (HS), then order them either coated or galvanized. If they are HS, which are generally covered with black millscale, then the best method to prep these, after installation, is blast to SSPC- SP 10 since this removes the millscale and preps the difficult to access surfaces such as the threads, gaps, edges of washers, etc. Power tool cleaning is acceptable, but inspections must ensure that all those difficult to prep surfaces are correct for the coatings that will follow. Depending upon installation methods, oils may be present; therefore, SSPC-SP 1 may be required before surface prep. This work is difficult and can be slow. Ensure a fair contract to a qualified contractor and inspection company. SSPC can help with this by their qualification programs.

Current PSF Question | Submit a PSF Question | Full PSF Archive

Desmodur® XP 2763 Drives Financial Results
High performance polyaspartic coatings
• Dry faster
• Fewer coats
• Superior corrosion/weather resistance
412-777-3983

Tank Base Protection
An easy to apply system utilizing Denso tapes and coatings around the tank base, that helps prevent corrosion from external elements.
Call 1-281-821-3355 or Visit densona.com

The MBX Bristle Blaster
Get a 2.7 to 3.3 mil profile and a Near White Metal Clean. For info visit www.mbxit.com or call 877 629-8777

Termarust (HR CSA) Chemically Stops
Active Corrosion
Truss bridge treated in 2000 with Termarust's (HR CSA) field-proven rust mitigation system chemically stopped corrosion, crevice corrosion & pack rust.

Blastox - One Step
Lead Abatement
Don't waste $$ on added labor steps with other methods. Don't mix, meter or apply at the job-site. Avoid strict hazardous waste rules.
Let your painters paint!

Built for Tough Jobs
From Epoxies to Urethanes to other high solid coatings, the new Binks Airless 75 delivers a great finish using an ergonomic design. Visit binks.com for more information.

Handheld VertaJet™ for concrete or steel
Ergonomic VertaJet from NLB boosts surface prep productivity. Rotating 40,000 psi water jets strip a 6” path and get into corners, with vacuum recovery.

The Technology Publishing Network