PaintSquare.com


The First Word in Protective & Marine Coatings

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

Problem Solving Forum

| More

July 25 - July 31, 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?



More items for Coating Materials; Surface Preparation


Selected Answers

From Lee Edelman of CW Technical on July 29, 2011:
     Assumption - In logic an assumption is a proposition that is taken for granted, as if it were true based upon presupposition without preponderance of the facts. ...

From jesse chasteen of schriener construction on July 28, 2011:
     And who has the most seawater tanks...the US Navy. Use the surface prep spec for seawater ballast and paint the outside anything but gray.

From Larry Muzia of Exceletech LLC on July 28, 2011:
     For the exterior system, I would recommend an SSPC-SP 10 with 2-mil anchor and 3-5 mils dft of an inorganic zinc. After proper cure, I would apply a 5-mil epoxy followed by 3 mils of a good quality aliphatic urethane. On the interior there are several systems that would perform. One could be SSPC-SP 5 blast with a  3-mil anchor profile, followed by a 2-coat epoxy system to achieve 30-40 mils dft. A holiday test would be necessary to insure a pinhole-free film. A 100% SBV epoxy or a glass flake polyester applied at a similiar dft would also be a good choice.

From Lee Edelman of CW Technical on July 27, 2011:

     There are several coating systems that could be used for this application. The selection will depend on how aggressive is the environment, temperatures and chemical exposure.

     For the interior surfaces,  use an SSPC-SP 5 abrasive blast with a proper anchor profile.  In some cases, such as sea water strainers, use anodes properly placed and a compatible coating or lining.  All welds and edges should be stripe-coated. After proper cure time, which can be done faster by force curing,  a holiday test should be done to insure proper film coverage. Exterior surfaces can be done using the same methods, excluding the anodes. In most cases, an easy touch up is hard to achieve for interior coatings and linings due to the process of opening the vessel, inspection, assessment,  and conformance with reuirements of confined space entry. Exterior surfaces will allow for an easier touch up and maintenance due to access.

From Ron Lanter of Protec on July 26, 2011:
     Saltwater storage tank? I mostly work offshore, but I don't think I've ever seen one of those. Why would you store salt water? Anyway, if you did, I would coat my tank inside and out with 300 M coal tar epoxy, and if I had to make any repairs, I could do that by power tool cleaning and brush coating more coal tar if the repair was a minor one; otherwise, you could drain the tank and sweep with #4 sand and re-coat with 300 M.

From Venkatasubramanian Chandramouly of Berger Paints Emirates Limited on July 25, 2011:
     The surface prepration no doubt has to be blast clean to Sa 2.5 or Sa 3.0. In terms of paint applicaton, there are a wide variety of paints available in the market from various manufacturers in tanklining sections. Depending upon the temperature of the water and service life requirements, various coatings (BPA epoxy type, Phenolic epoxy type) can be selected. They can also be cured under water, and even coatings that can be applied (for maintenance) under water (by hand) are available in the market.

Please sign in to submit your answer this question    

Tagged categories: Shop-applied coatings; Tank exteriors; Tank interiors


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

Harsco
BLACK BEAUTY® App

Download the free app for BLACK BEAUTY® Abrasives. Explore all the features from the palm of your hand.
Toll Free: 1-888-733-3646


Atlantic Design, Inc.
OUR INDUSTRY IS CHANGING!

We should know. We’re the ones leading the way. Cleverly simple. Clearly ADI. 866.Call.ADI


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.


Wasser High-Tech Coatings Inc.
Wasser Coatings Protect

some of the most important bridges in the country; learn about our NEPCOAT-approved system and our entire range of MCU & Polyurea coatings. 1-800-627-2968 www.wassercoatings.com


BASF
New resins from BASF will have metals loving water:

Excellent corrosion resistance, low VOC, high gloss, thin films basf.us/industrialcoatings
polyorders@basf.com
800-231-7868


Sherwin-Williams
Nova-Plate® 325

• Extends Service Life
• Single Coat Application
• Cure to Service in 24 Hours


Montipower, Inc.
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

 
 
 
Technology Publishing

The Technology Publishing Network

The Journal of Protective Coatings & Linings (JPCL) PaintSquare
Durability + Design Paint BidTracker JPCL Europe

 
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 PaintSquare.com   |   Privacy policy   |   Terms & conditions   |   Site Map   |   Search   |   Contact Us
 

© Copyright 2000-2014, Technology Publishing / PaintSquare, All rights reserved
2100 Wharton Street, Suite 310, Pittsburgh PA 15203-1951; Tel 1-412-431-8300; Fax 1-412-431-5428; E-mail webmaster@paintsquare.com