Follow us on Twitter Follow us on LinkedIn Like us on Facebook Follow us on Instagram Visit the TPC Store
Search the site


Problem Solving Forum

| More

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.

Please sign in to submit your answer this question    

Tagged categories: Corrosion protection; Structural steel

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

SABRE Autonomous Solutions
The ALPHA1 provides a consistent finish day-in
day-out; job to job.

SAFE Systems, Inc.
Portable Blast &
Recovery Equipment
Trailer or skid mounted blast and recovery equipment. Systems designed for maximum versatility, environmental compliance
and overall cost savings.
Call 1-800-634-7278

NLB Corporation
NLB Sure Shroud: Greater Protection and Flexibility
NLB’s Sure Shroud’s lighter weight and flexibility reduces operator fatigue and offers unmatched protection against high pressure hose ruptures. 10k to 40k psi rated.

DeFelsko Corporation
PosiTector SHD Shore Hardness Durometer
PosiTector SHD measures the hardness of non-metallic materials. Features a measurement timer, auto ignore mode and internal memory. Shore A or D available.

KTA-Tator, Inc. - Corporate Office
Instrument Service Department
Are you a QP certified contractor? KTA’s Instrument Service Department can help keep you compliant!
Click or call 1-800-KTA-GAGE.

Sika® Industrial Floor Coatings
Click to learn about floor and wall systems relied upon for performance, durability, easy maintenance and aesthetics across the every industry and environment.

Tarps manufacturing, Inc.
QUALITY MADE IN AMERICA —Available near you!
CLICK to get a behind-the-scenes look at how Tarps Manufacturing makes the highest-quality tarps right here in the USA — available nationwide.

Jotun Paints Inc.
Jotun Jotachar 1709
Mesh-free passive fire protection epoxy designed to protect against hydrocarbon pool fire scenarios for up to four hours as defined in the ANSI/UL1709 standard.

ARC / A.W. Chesterton Company
Chemical Resistant Lining
ARC S7 is a sprayable, novolac vinyl ester based, ceramic particle reinforced, protective coating for high temperature, chemical exposures where erosive particulates and thermal cycling conditions may be present. ARC S7 can be easily applied by brush, roller or airless spray system.


Technology Publishing Co., 1501 Reedsdale Street, Suite 2008, Pittsburgh, PA 15233

TEL 1-412-431-8300  • FAX  1-412-431-5428  •  EMAIL

The Technology Publishing Network

Durability + Design PaintSquare the Journal of Protective Coatings & Linings Paint BidTracker

EXPLORE:      JPCL   |   PaintSquare News   |   Interact   |   Buying Guides   |   Webinars   |   Resources   |   Classifieds
REGISTER AND SUBSCRIBE:      Free PaintSquare Registration   |   Subscribe to JPCL   |   Subscribe to PaintSquare News
MORE:      About   |   Privacy Policy   |   Terms & Conditions   |   Support   |   Site Map   |   Search   |   Contact Us