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Minutes of the General Meeting held at The Palm Court Hotel, Aberdeen, in conjunction with ICorr, Aberdeen branch, on Tuesday, 17th April 2012.  

  PERSONS PRESENT:

Committee

Robin Oakley (Chairman) – QinetiQ
Ian Hamilton – Aker Solutions
Robin Jacob - Corrosion Consultancy
Gary Masters  – E.ON New Build & Technology
Clive Tuck Lloyd’s Register EMEA
Jean Tuck – MCF Secretariat

Members & Guests

Adesiji Anjorin - Oceaneering International Services Ltd (ICorr)
Alireza Aghasadeghi - Oceaneering International Services Ltd (ICorr)
David Armstrong - Lloyd’s Register EMEA
Charlie Barraclough – Commtech Associates
Frances Blackburn - Maersk
Chris Byrne – Rolled Alloys
Thierry Cassagne – Total E&P (speaker)
Bruce Cowe – Shell
Bob Crundwell – Chartley Consultants Ltd & ICorr UK President
Rick Duncan – Rolled Alloys

     

Sarah Etubus - Wood Group Integrity Management (visitor)
Roger Francis – Rolled Alloys
Tim Froome – CM BEASY
Tony Gerrard – BAC Corrosion Control
Chris Googan – Anticorrosion Engineering Ltd (ICorr)
David Hillis – Total E&P UK
Daley Lasebikan - Wood Group Integrity Management (visitor)
Steve McCoy – Special Metals (guest)
Dave Moore - Lloyd’s Register EMEA
Billy Morrison – Wood Group Integrity Management (ICorr)
Eugene Ogosi – Flexilife Ltd (ICorr)
Tolu Otekalu - Aker Solutions
Kevin Paterson – Deepwater EU Ltd
Steve Pollard – Rolled Alloys
Carol Powell - CDA
Tracy Reid - Oceaneering International Services Ltd (ICorr)
Alistair Seton – Subsea7 (ICorr)
John Thornton - Lloyd’s Register
EMEA
Geoff Warburton – Rolled Alloys

APOLOGIES  

Stephen Andrews – Clyde Pumps
John Cleminson – Langley Alloys 
Peter Cutler – NI
Richard Dawson - Lloyd’s Register EMEA
Phil Dent (MCF Vice-Chairman) – Exova 
Steve Ellis - Cathelco
Graham Hill – ECHA
Christos Kapsalis – KME Germany AG & Co KG
Matthew Peet (Committee) – CAPCIS 
Richard Perkins – Aish Technologies Limited
   

Jan Przydatek - Lloyd’s Register EMEA
Bernd Sagebiel - KME
Keith Stokes – DSTL
Tanvir Sumon – Saipem Ltd
Ed Wade – Metal Ecosse
Chris Wheatley – CJ Wiretech
Gareth Williams - ECHA
Mike Wilson – BAE Systems 
Brian Wyatt - Corrosion Control

 

The Chairman, Robin Oakley (QinetiQ), opened the meeting.  

1.  TECHNICAL PRESENTATIONS 

1.1  Advances in Copper Alloy Aquaculture Cages’, Carol Powell, Copper Development Association & Langley Gace, International Copper Association, New York

1.2   Progress in the Understanding of an Umbilical Local Environment, Thierry Cassagne, Total E&P

1.3   Preferential Weld Corrosion in a Gas Compression System’, Dave Moore, Lloyd’s Register EMEA, Aberdeen

2.  OPEN FORUM

2.1     The MCF Chairman explained that the MCF would be celebrating its 25th Anniversary in 2013 and the committee were looking into ways to mark this event. 

He drew the attention of the meeting to the planned Pipeline Protection, ‘Hot’ Topics and Marine Corrosion Conference, Edinburgh 15 – 18 October 2012.  This conference is being organised by NACE and BHR, and the MCF was looking into ways of becoming involved in some way with the ‘Marine Corrosion’ part.  Details on the news page of our website.

2.2           Charlie Barraclough (Commtech Associates) initiated a discussion on the need to inlay 22Cr duplex flange ring grooves in subsea service.  He explained the background which was that CS flanges for subsea service have the mating face or ring groove inlaid with 625 to prevent local crevice corrosion due to the inability of CP to function in the crevice. 22Cr is generally not sea-water resistant at above ambient temperatures, and the fluids inside the pipe may be at 50o to 100 o C.  For economic reasons a new generation of clients are currently using 22Cr for flowlines and manifolds after the failures of the 90s and 00s.   

It is apparently quite common to find 22%Cr duplex stainless steel flanges being operated in seawater with internal fluids at 50°C-90°C.  Many operators are saying that cladding is not necessary, but the risk of failure of these flanges would be reduced by their being clad with 625.  There was a discussion about the degree in which cathodic protection can hinder initiation of crevice corrosion.  If the CP system is switched on from the start of deployment, then the extra protection from cladding may not be necessary.  Comparison of the corrosion resistances of the different nickel alloys used in cladding was also spoken about.  825 is often found to have not dissimilar corrosion performance in seawater to 316 (their PRENs are very similar) and 718 has been known to exhibit crevice corrosion.  It was suggested that the known influence of biofouling in causing initiation of crevice corrosion could explain this, as biofilms could be picked up during transfer of components with an ROV. 

2.3     Carol Powell (CDA) reported on the joint EFC/NACE International Publication. 'The Corrosion Performance of Metals for the Marine Environment - a Basic Guide’. Maney Publishing have now published this book, which is EFC Publication No 63.  

The National Metals Technology Centre (NAMTEC) at Rotherham are bringing the authors and other specialists together for a 1-day seminar on 30th May 2012:  Metals and their Corrosion Behaviour in Marine Environments, aimed at giving practical guidance in the selection and use of steel and stainless steel as well as alloys of copper, aluminium, nickel and titanium, and also specifically address the special galvanic requirements that arise where metals are used in combination.  Each delegate will receive a complimentary copy of the book as a key reference source in the future.   http://www.namtec.co.uk/event/show/74

 

3.  TECHNICAL PRESENTATIONS (part 2)

3.1  ‘Integrating Mathematical Modelling with ROV Survey Data to Improve Interpretation, and Provide Input to Ongoing CP Strategies’, Tim Froome, BEASY

3.2   QA/QC Tools to Ensure the Quality of Duplex Stainless Steel Components’, Roger Francis, Rolled Alloys

The Chairman closed the meeting at approx. 4:30 pm  

__________________

The meeting was followed by a meeting of ICorr, Aberdeen branch:-

‘Al-Zn-In Sacrificial Anodes Manufacture and Specification - It’s Not Alchemy’, Nigel Owen, Aberdeen Foundries


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