Joint with TWI, when Neil Gallon & Michael Young of Rosen

The January meeting was joint with TWI, when Neil Gallon & Michael Young of Rosen presented a talk on Preferential Weld Corrosion (PWC).

This was the first of its type in the North East aimed at creating some synergy between ICorr and TWI.  A good crowd over 20+ came to hear the presentation which went into in detail about the differences and complexity of welds in pipelines, and the possibility of galvanic corrosion causing the metal adjacent to the weld being consumed. The heat affected zone (HAZ) can be attacked preferentially to the weld because of changes in morphology and differing galvanic potentials. Potential issues are very difficult to diagnose and therefore a lot of work has been done to understand the effect of adding corrosion inhibitors, for example when they are added to water injection/production pipes to protect the base metal, however this can also cause issues as they do not protect the weld. In these cases the weld can become anodic and preferential weld corrosion can occur.

One very interesting question was asked about the potential ‘double whammy’ of PWC and CUI occurring at the same time. It was confirmed that this could potentially occur if the insulation system was damaged allowing water to enter the system and causing electrolytes to leach from the insulation and gather at the weld.  In summary the evening was great success and this type of joint meeting will be used again.

This report was inadvertently published under the Midland Branch in the last issue.

North East Branch

North East Branch

The January meeting was joint with TWI, when Neil Gallon & Michael Young of Rosen presented a talk on Preferential Weld Corrosion (PWC).

This was the first of its type in the North East aimed at creating some synergy between ICorr and TWI. A good crowd of over 20 came to hear the presentation which went into in detail about the differences and complexity of welds in pipelines, and the possibility of galvanic corrosion causing the metal adjacent to the weld being consumed. The heat affected zone (HAZ) can be attacked preferentially to the weld because of changes in morphology and differing galvanic potentials. Potential issues are very difficult to diagnose and therefore a lot of work has been done to understand the effect of adding corrosion inhibitors, for example when they are added to water injection/production pipes to protect the base metal, however this can also cause issues as they do not protect the weld. In these cases the weld can become anodic and preferential weld corrosion can occur.

One very interesting question was asked about the potential ‘double whammy’ of PWC and CUI occurring at the same time. It was confirmed that this could potentially occur if the insulation system was damaged allowing water to enter the system and causing electrolytes to leach from the insulation and gather at the weld.
In summary the evening was great success and this type of joint meeting will be used again.

Corrosion Under Insulation Test Method Review

ICORR NE Branch – CUI Test Method Review Thank you to all those who attended the recent CUI test method review that was presented by Neil Wilds, Sherwin Williams Global Director CUI/Testing. It was one of our most successful events with over 30 attendees representing asset owners, engineers, test houses, coatings and insulation manufacturers.

This lead to some excellent discussion after the presentation and this has carried on via email. If you have any questions feel free to contact Neil directly. That’s it for 2018, I’ll share details of any future events planned in the New Year. As always, if you have any topics you would like to cover or present please get in contact!

All the best Icorr NE

ICORR North East – Corrosion Under Insulation – Review of Coatings Test Standards NACE TG516 and ISO 19277

Image Source: https://www.eddyfi.com/oil-gas/corrosion-under-insulation-plague-what-you-need-to-know/

Welcome and please join us for a review of test methods NACE TG516 and ISO 19277.

Please follow this LINK to register for free tickets.

The meeting will take place at the Rosen Group starting at 6pm for networking followed by a presentation / discussion at 6.30pm delivered by Neil Wilds, a thought leader in coatings for corrosion under insulation.

Neil has 32yrs experience in Coatings Industry working on high solids epoxy’s / testing and CUI/Insulation Coatings. Currently Technical Marketing Manager for Sherwin Williams and a committee member on TG516 Standard Practice for Evaluating Protective Coatings for Use Under Insulation.

Presentation Overview:

There has been many iterations of test methods from coatings companies over the last 10-15 yrs looking at prequalification of CUI coatings. To a large extent this has not been standardised and accepted by the major Oil & Gas end users. Therefore over the last 3-4 years two CUI test method/prequalification standards have been worked on to solve this issue. This presentation will go through these tests methods and will hopefully

ICorr North East News; Reschedule Event

Please join us for a presentation giving an overview of wet applied Tank Linings.

This will provide an overview of:

·      Key technologies

·       Application methods and challenges

·       Correct specification for service environment

There will also be an open forum for discussion and questions.

We look forward to seeing you there on the 1st of August from 6.00pm for snacks and great networking opportunities followed by the presentation at 6.30pm.

Please follow this LINK to register.

Michael Harrison

Graduated in Applied Chemistry (1st Class Honours) 1988 – Newcastle, UK. 15 years in Development and Testing of High Performance Linings, International Protective Coatings, UK. Development of core linings range and preparation of key support data. Established the testing for Chemical Resistance Guide. 2 Years Business Support Manager – International Marine Coatings. 10 Years Specialty Linings Technical Manager – International Protective Coatings, UK. Training of regional sales and technical personnel. 3 Years Specialty Linings

November Meeting

November Meeting

The November meeting was held at the Rosen Facility in Gosforth, and Barry Turner gave a presentation entitled, “A review of ISO 21809-3 standard for field joint coating”. Barry has over 30 years’ experience in industrial coatings and plastics for the oil and gas and water industry. He has a strong technical background with experience in sales, marketing, development and technical service positions, and is an active participant in ISO standardisation development for pipeline coatings as UK nominated expert.

ISO 21809-3 is becoming the recognised standard for the qualification and testing of field joint coatings on steel pipelines in the Oil and Gas sector. Barry presented his personal review of the 2016 revision of the standard and tried to put some light on the standard development process and explain the different material classes and associated issues and concerns. The presentation started with a historical look at the qualification of field joint coatings (FJC), viz:

DIN 30672-1 (2000) – Joint DIN/DVGW developed standard for tapes and shrinkable materials, with no cathodic protection, and max. temperature 50ºC.

EN 12068 (1999) – developed under CEN leadership for tapes and shrinkable materials, with cathodic protection, material defined maximum temperature, and offshore and “special situations” are excluded.

NF A49-716 (1998) – replaced by EN 10329 in 2006.  Covers 8 different coating types, as very diverse materials unable to standardise requirements.   End user to chose coating type.  (EN 10329 based on similar philosophy to 49-716).

The presentation then moved on to the dominant standard in North America, CSA Z245.30 (2014) developed by Canadian Standards, and which is a mandatory requirement in Canada for FJC,  but also for field applied coatings in general, covers 7 material classes. It also defines responsibilities of each party involved in a coating job and the qualification of materials, application procedures and individuals as applicators.  ISO 21809-11 is new and currently being drafted and will similarly be for field applied coatings but looking more toward external coating’s rehabilitation in the field. The bulk of the discussion held was on the ISO 21809 standard and especially the different coatings classes, ie., Part 1, Polyolefin coatings (3-layer PE and 3-layer PP) and currently under revision; Part 2, Single layer fusion bonded epoxy coatings; Part 3, Field joint coatings; Part 4, Polyethylene coatings (2 layer PE) ; Part 5, External concrete coatings ; Part 6, Dual layer and Multi layer fusion bonded epoxy coatings (NEW, currrently in development);
and Part 11, Coatings for in-field application, coating repairs and rehabilitation.

Everyone that attended found the talk very informative and resulting in a lot of discussion.