Save 20% on select best sellers with code MONSTER24 - Shop The Sale Now
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.
Corrosion under insulation represents a real threat not just to the assets used in heavy industry / Oil & Gas but also to life. This has been demonstrated through the years with millions of dollars of lost assets/production and unfortunately injuries and deaths. For this reason there have been many documents which have providing guidance not only for design of equipment against CUI but also the pre-qualification/testing of coating systems.
The use of single component water based coatings for protection of metal substrates continues to grow due to their low odor, health and safety advantages, easy cleanup and environmental friendliness. Nevertheless, the challenge continues to find alternatives to the traditional chromate, zinc or similar heavy metal type corrosion inhibitors which tend to rely on passivation or sacrificial cathodic protection.
A new innovative high performance, zero VOC acrylic topcoat offers excellent corrosion resistance, weathering durability, early moisture resistance, freeze thaw resistance and dirt pick up resistance that is comparable to high VOC commercial acrylic. The performance properties of this zero VOC acrylic topcoat are compared to a high VOC commercial acrylic topcoat used in protective coating applications.
These case studies are presented demonstrating the cost savings and performance of one-coat direct-to-metal (DTM) and two-coat polyaspartic exterior coatings of three industrial maintenance applications involving hopper railcars, bridges, and an exposed steel beam superstructure. In each example, the rapid cure time of the polyaspartic coating provided increased productivity to complement its documented high performance.
Within many features of the Electro Slag Strip Cladding (ESSC) technique, one of the most attractive is the opportunity to achieve a required clad metal chemical analysis in one single layer. All these CRA 308L, 316L, 347, 625 & 825 types frequently concern fabricators who are constantly demanding for ways to reduce production costs & thicknesses of CRA. Hence, new low dilution and high-travel speed solutions have been developed with the aim to reduce the thickness and/or the number of layers in order to answer to industry expectations in terms of productivity. Through controlling dilution with the parent metal and balancing the chemistry by means of the new fluxes, it has been possible to achieve high quality results with an iron content Fe <7% & Fe < 10% for 625 cladding in a single layer where traditional ESSC requires two layers for the same objective. Also, for Alloy 825, single and thin layer solutions have been achieved. This subject presents an overview of these new developments with details on the applied welding conditions and the quantitative results achieved, showing benefits in terms of material savings and productivity gains.
The installation of metallic coupons in the vicinity of buried pipes under cathodic protection (CP) allows theoretically to measure the potential and the current density through the simulated coating defect. Nevertheless this type of monitored coupon does not provide direct information on the actual efficiency of the CP and corrosion rates that could be caused by a CP failure over time or not adapted CP design. According to the soil resistivity and the corrosion potential in absence of CP a protection potential is generally targeted following the standard recommendations. However the soil resistivity as well as the corrosion potential might depend on the seasonal fluctuations and the protection potential might vary as function of the considered standard. Moreover all soils parameters cannot be considered in recommendations from standards and cathodic protection criteria can be sometimes debatable.In this study very sensitive electrical resistance (ER) sensors allowing obtaining precise corrosion data in real-time were adapted for soil applications. They were used in the selected soils and conditions to determine the off potential and current density corresponding to a corrosion rate of 10 µm/year which corresponds to the maximal corrosion rate of buried structures considered as protected according the standard ISO 15589-1:2015. The adapted ER sensors appeared to be particularly suitable for determining the protection potential and CP criteria in a relatively short time. For the tested soils and conditions the results showed that the cathodic protection criteria recommended in ISO 15589-1: 2015 are conservative compared to those measured experimentally. This method therefore seems particularly relevant for the determination of the protection potential in complex or polluted media in the absence of data in the literature.
Typical austenitic stainless steels like 316L (S31603) contain chromium, nickel, and, optionally, molybdenum as major alloying elements. These are required to provide their beneficial properties, which include e.g. very high corrosion resistance and high ductility and toughness, yet showing comparably low strength and hardness. General corrosion resistance is primarily achieved by the element chromium, which causes formation of a thin but dense chromium oxide layer on the surface, when the amount of chromium dissolved in the metallic matrix is larger than approximately 10.5 wt%.
Olin Epoxy has designed a unique low VOC and high solids epoxy system which offers superior performance in tank liner application. The formulation of these novel materials in high temperature and high chemical resistant ambient cure tank liner will be described.