| Connect Follow us on Twitter Like us on Facebook
About | Subscribe | Advertise


Download our free e-book! Overcoating bridges and other structures.

F-Files: Mechanisms of Failure
The case of…surprise blistering and rusting on a new tank lining system

From JPCL, July 2012

More items for Quality Control

by James D. Machen, Senior Coatings Consultant, KTA-Tator, Inc. and Richard Burgess, Series Editor, KTA-Tator, Inc.

(Login to read the full article)


Tagged categories: Blistering; Coating failure; Rust; Tanks

Comment from Richard Aguillard, (9/18/2012, 12:31 PM)

So the liner specification did NOT include substrate cleanliness test, i.e. salt testing prior applying the liner?? And what tank doesn't have a hydro test after construction? It's also a great idea to check the hydro water content for contaminates regardless. And no work should be preformed after liner application without protective coverings and an "after work" final inspection to the liner! "The presence of water-soluble salts beneath the lining created an osmotic cell" has been rebuked in past research including most recent Myths about Salts,Chlorides, and Coatings. Porous films have no regards to what the substrate consists of. Its only after the water molecule reaches the substrate and have contact with the contaminate that you then have a pressure difference created (depending on the concentration of the then formed solvent and solute=solution).

Comment from Car F., (9/20/2012, 11:46 AM)

These are the perennial problems associated with "fast tracking" projects. Probably by now no one is remembring how fast and on time the project was concluded, everyone is looking for someone to pay for the repairs. I'm sure the inspectors are also being asked why do they passed that first test without being physically present ...a series of unfortunate events, most of them preventable.

Comment from James Johnson, (9/21/2012, 9:23 AM)

It is amazing that anyone writing such a specification would ignore salts as they are widely known to cause such failures, expecially in tank linings. It is even more amazing that neither contractors nor the inspector did not bring up the matter at pre-bid or pre-work conferences. It is widely known and industry acknowleged that high levels of some salts cause premature failures and that lesser levels detract from overall life spans. There are numerous published articles on the subject and both SSPC and NACE have had committees developing documents on the subject for many years. SSPC has the Guide 15 document providing information on salts testing and NACE has the 6G186 document providing information and guidance on how salts affect coatings and corrosion. Little of this information is new but has been known and discussed for about 20 years, so it amazes me that the subject is ignored when it is the known cause of a huge number of premature coating failures.

Comment Join the Conversation:

Sign in to our community to add your comments.

Fischer Technology Inc.
DUALSCOPE®FMP100 with DataCenter IP

Transfer customized inspection plans from PC to FMP100 using step-by-step guidance with prompts and pictures throughout the measurement procedure

KTA-Tator, Inc. - Corporate Office

• Coating failure analysis
• Independent
  comparative testing
• Accelerated
  weathering testing
• Toxic metals testing
• A2LA Accredited
Contact: Cindy O'Malley,
at 412-788-1300 x180

HoldTight Solutions Inc.

Our HoldTight®102 salt remover & flash rust
preventer prevents flash
rust by removing surface contaminants. Contact us
for your nearest distributor.
(800) 319.8802

Absolute Equipment/Grand Rental Station

We have Tier 4 Equipment including Air Compressors & Generators for Sale & Rent! Your job may now require Tier-4. or Call 412-931-6655.

RBW Enterprises, Inc.
Robotic Blast Cleaning & Painting News

RBW Enterprises has the only portable blast cleaning machine that can clean both horizontal and vertical surfaces, and pipe See more Videos at

DeFelsko Corporation
PosiTector Surface Profile

Two solutions for measuring peak-to-valley surface profile height with or without replica tape.

Novatek Corporation
Novatek Corporation, Dustless Coatings Removal

Strip, clean and profile all dust free! Comply with new lead standards. Contact today: (866) 563-7800

Carboline Company
Carboline is pouring with opportunities

We are proud of our exceptional products and services, and believe that people are our greatest asset. Come grow with us!

Waterjet Technology Association (WJTA)
2016 WJTA-IMCA Expo Nov. 2-3, New Orleans

See the latest advances in automated and handheld UHP waterjetting tools/systems for paint/coating removal, surface prep, industrial cleaning. Exhibits, live demos.

Industrial Vacuum Equipment Corp.
Hurricane Vacuums
& Dust Collectors

Vacuum and dust collector hose, filters and related accessories.

Technology Publishing

The Technology Publishing Network

The Journal of Protective Coatings & Linings (JPCL) PaintSquare
Durability + Design 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   |   Site Map   |   Search   |   Contact Us

© Copyright 2000-2016, 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