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Main Topic: Surface Preparation

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Problem Solving Forum (41)

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How should surface preparation be conducted in non-sparking atmospheres?

Question posted September 29 to October 3, 2014


When performing maintenance surveys on structures that require coatings under insulation, how do you inspect the condition of the coatings?

Question posted September 22 to September 26, 2014


The literature indicates that UHP waterjetting produces a profile on steel, although of a micro nature. Is this sufficient roughness for good adhesion of thin-film primers?

Question posted September 15 to September 19, 2014


Do you need to wait for the mortar to cure before repainting a brick surface after repointing and power-tool cleaning? If so, how long, and how do you judge when it is safe?

Question posted August 25 to August 29, 2014


When SSPC-SP3 (Power Tool Cleaning) is specified, how should one decide when to apply the tool to the entire surface and when to use it just where the coating appears defective or rusting?

Question posted August 4 to August 8, 2014


How does residue from chemical stripping affect the performance of the replacement coating?

Question posted July 21 to July 25, 2014


What are the pros and cons of using shotblasting to remove a coating system from a concrete floor?

Question posted June 16 to June 20, 2014


What kind of initial treatment is the best defense against graffiti for rough-surfaced concrete block (CMU)?

Question posted June 9 to June 13, 2014


How, besides grinding, can one remove large areas of silicone coating from a ship’s hull to replace the silicone with an epoxy mastic?

Question posted June 2 to June 6, 2014


When animal fat in slaughterhouses penetrates concrete surfaces, how do you identify and remove the contamination before coating the concrete?

Question posted May 26 to May 30, 2014


When a food plant runs 24/7, even during coating maintenance, tiny airborne food particles can contaminate a prepared surface. How do you identify, prevent and/or remove such contamination before coating?

Question posted April 7 to April 11, 2014


What is the best way to remove thick-film elastomers from floors and ship decks?

Question posted March 31 to April 4, 2014


Which type of abrasive blasting media is suitable for preparing the more “exotic” stainless steels, such as Inconel or Monel?

Question posted March 17 to March 21, 2014


I need to coat a bare concrete warehouse floor that has visible oil stains. What are my options for cleaning the concrete before coating it?

Question posted January 13 to January 18, 2014


There are ways to increase the pressure for waterjetting to levels above 20,000 psi. What are the effects of different pressures (below and above 20,000 psi) on cleaning ratios?

Question posted December 9 to December 13, 2013


I keep reading references to sweep blasting, but I can't find a standard for it. What is sweep blasting, and is there a standard for it in the U.S. or elsewhere?

Question posted November 4 to November 8, 2013


How do you prepare an oil-stained, bare concrete floor for coating?

Question posted August 26 to September 1, 2013


Is there a place for using “rust convertors” in heavy-duty maintenance projects?

Question posted April 22 to April 28, 2013


What is most effective treatment for steel contaminated with MIC before painting ?

Question posted March 18 to March 24, 2013


Is it cost-effective to pressure wash a bridge or other structure before abrasive blasting? What pressures, flow rates, and procedures are recommended?

Question posted November 12 to November 18, 2012


Is it cost-effective to grind steel edges before coating for atmospheric service? Why or why not?

Question posted October 29 to November 4, 2012


What causes static electricity during abrasive blasting? What risk does it pose, and how can it be controlled?

Question posted October 15 to October 21, 2012


What is the proper surface preparation for stainless steel before coating to resist a salt-laden atmosphere?

Question posted September 3 to September 9, 2012


How pure must fresh water be for water washing or waterjetting, and how do you determine the water’s purity?

Question posted August 27 to September 2, 2012


What advantages/disadvantages have you seen with using recycled glass abrasives vs. traditional abrasives?

Question posted August 6 to August 12, 2012


When blasting cast-iron structural steelwork, what type of defects might be found, and how do you address them?

Question posted June 18 to June 24, 2012


How do you remove all traces of an uncured internal coating from a tank when abrasive blasting is not an option?

Question posted June 4 to June 8, 2012


In preparing for coating, what is the best way to treat a steel surface that has been attacked by microbiologically influenced corrosion (MIC)?

Question posted May 29 to June 1, 2012


What is the best way to achieve proper surface preparation in areas with limited access, such as interior box beams on bridges?

Question posted May 14 to May 20, 2012


How long can a blasted surface be left before priming under different temperatures/relative humidity environments?

Question posted April 16 to April 22, 2012


How do you determine if local water is suitable for use in UHP waterjetting, particularly in areas where potable water is scarce?

Question posted March 12 to March 18, 2012


Some painting specifications call for the use of “Best Effort” in relation to blasting. How does one determine “Best Effort?”

Question posted February 20 to February 26, 2012


What measures must you take to determine and assure the cleanliness of an abrasive?

Question posted February 6 to February 12, 2012


What is the best method for removing production machine oils soaked deeply into a concrete floor before applying a non-skid coating?

Question posted January 9 to January 15, 2012


When should you specify UHP waterjetting on bridges?

Question posted October 17 to October 23, 2011


Specifications often state that glossy surfaces must be dulled before overcoating. What are some methods for doing this, especially when sanding isn’t feasible or desirable?

Question posted August 29 to September 4, 2011


How can I determine the cleanliness of stainless steel for painting after blast cleaning?

Question posted August 8 to August 14, 2011


What are the options for shop-applied systems (surface preparation and coating type) to protect the interiors and exteriors of new saltwater storage tanks and associated steelwork that will be exposed to seawater, and that will allow for easy touchup and maintenance once the structures are erected?

Question posted July 25 to July 31, 2011


What is the remedial action if a blaster produces too high a surface profile for the required primer thickness?

Question posted July 18 to July 24, 2011


What is the preferred method to remove 25-year-old coal tar epoxy from a carbon steel tank in order to reline?

Question posted June 6 to June 12, 2011


How clean must the compressed-air supply be for blast cleaning, blow down and painting? How is cleanliness of the air determined?

Question posted April 11 to April 17, 2011


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Atlantic Design, Inc.
OUR QUALITY & YOUR TIME.

Many service issues can be easily solved over the phone. When you do need parts, ADI has most in stock for all your blasting needs. 866.Call.ADI


Advanced Recycling Systems
ADVANCED RECYCLING SYSTEMS (ARS)

Recycling Machines, Dust Collectors, Rapid Deployment units are time-tested and approved for the rugged industrial environment. Contact ARS today!
(330)536-8210


NLB Corporation
Water Jets in Action

Video demo shows how
easily Vortex™ removes
coatings and more. Lawn-
mower-style unit strips
floors, ship decks, etc.
faster than hand lances,
while containing debris.


CHLOR*RID International Inc.
Free Webinar

Learn about soluble salts, along with a discussion on allowable levels.
More information at
www.chlor-rid.com,

800-422-3217


Axxiom Manufacturing
Revolutionary Units

By integrating Schmidt's Aftercoolers with our blast pots, these systems remove moisture from air and minimize equipment footprint on jobsite.
Call 1-800-231-2085


Graco Inc.
Eco-friendly surface prep blasting equipment

EcoQuip blast equipment adds a fine water mist during the spraying process for less dust. Less media consumption. Less cleanup. Easy to use. Call 877.326.7847


Van Air Systems
Fill Your Air Dryer with
Dry-O-Lite.

Only Dry-O-Lite desiccant from Van Air Systems keeps compressed air lines dry and trouble free. Perfect for blasting and painting.

 
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