Important: AMPP System Update February 27 - March 11 – Limited Access to AMPP Digital Services. Act Now to Avoid Disruptions! - Learn More
Much progress has been made in testing of offshore paint systems in the past 10 years. But more work is needed to understand what is happening and give us the confidence to correlate the laboratory accelerated test to the field service life of offshore coating systems. The new NACE Standards are a move in the right direction.
Although in the 1980's a number of oil companies requested prequalification testing (primarily in the USA), many did not but relied solely on advice from paint companies. Eventually NACE produced TM 0184 but complexity of test equipment meant little take up. However, premature breakdown and systems failures have led to a major resurgence in activity in both Oil Companies and paint suppliers over the past 10 years, so that there now exists around the world a whole series of various testing scenarios.
This paper will review these tests, covering ISO 20340 along with others, and consider how the recently published NACE Offshore Coating Test Methods could become a 'Universal' standard by further developing the duplex testing theme of corrosion testing and film stability/stress (cracking) testing.
Key Words: Offshore coatings, Test methods, Film stability
A test programme was conducted to study corrosion behaviour of - 1. carbon and low alloy steels, 2. austenitic, martensitic and duplex stainless steels and 3. nickel-based Alloy 718 - in low oxygen content (20 & 200 ppb) seawater.
We are unable to complete this action. Please try again at a later time.
If this error continues to occur, please contact AMPP Customer Support for assistance.
Error Message:
Please login to use Standards Credits*
* AMPP Members receive Standards Credits in order to redeem eligible Standards and Reports in the Store
You are not a Member.
AMPP Members enjoy many benefits, including Standards Credits which can be used to redeem eligible Standards and Reports in the Store.
You can visit the Membership Page to learn about the benefits of membership.
You have previously purchased this item.
Go to Downloadable Products in your AMPP Store profile to find this item.
You do not have sufficient Standards Credits to claim this item.
Click on 'ADD TO CART' to purchase this item.
Your Standards Credit(s)
1
Remaining Credits
0
Please review your transaction.
Click on 'REDEEM' to use your Standards Credits to claim this item.
You have successfully redeemed:
Go to Downloadable Products in your AMPP Store Profile to find and download this item.
Since 1982, there has been a move to Thermal Sprayed Aluminum (TSA) coating in the “splash zone” of offshore structures. Our experience indicates that an experience applicator, good surface preparation and quality of wire combined to achieve required thickness and apply the sealer to seal the entire surface.
This paper will critically review the current philosophies described in ISO and NACE anti-corrosive performance test standards, taking into consideration correlation with natural exposure, track record, validity of "acceptance" or "pre-qualification criteria", dry film thickness and suggested areas for improvement.