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Minutes of the General Meeting held on Wednesday, 15th October 2014 at Lloyd's Register, Fenchurch Street, London.

  PERSONS PRESENT:

Committee
Phil Dent – Exova (Chairman)
Gary Masters – E.ON Technologies (Ratcliffe) Ltd (Vice-Chairman)
Robin Jacob – CP Consultancy
Robin Oakley – QinetiQ
Carol Powell – CDA/NI
Pat Stokes - MACAW Engineering
Clive Tuck – Lloyd’s Register EMEA
Brian Wyatt – Corrosion Control
Jean Tuck – Secretariat

Members & Guests
Richard Baily - Impalloy Charlie Barraclough – Commtech Associates
John Baynham – BEASY
Glenn Byrne – Rolled Alloys/NeoNickel
Kim Chua – Exova
Akin Fajimi - NeoNickel
Ross Fielding – Impalloy
Roger Francis – RF Materials
John Galsworthy - QinetiQ
Dean Haley – MoD
Ben Hooker - Babcock
Christos Kapsalis – KME Germany AG
Farkhanda Kauser – Rolls-Royce
Xuiqing Li – Heatric
Cerri Love – Babcock
Qing Lu - TWI
Chris Lynch – Corrpro
Andrew MacDonald – Lloyd’s Register EMEA

Mohammed Majeed - University of Leeds (guest student)
Carl Minall – Babcock
Felipe Leon Morales – Endures (guest speaker)
Richard Perkins – Aish Technologies
Helen Peterson - MoD
Joseph Plummer – DSTL
Marco Rapone – GE Oil & Gas
Beth Scadden – University of Leeds (guest student)
Stephen Shapcott – GE Oil & Gas
Ian Spring – Corrosion Prevention Ltd
Tony Staines – Langley Alloys
Keith Stokes - DSTL
Sander van Nieuwenhuijzen – Exova
Gareth Williams – ECHA Microbiology
Mike Wilson – BAE Systems

APOLOGIES  

       Henrik Andresen – Shell UK Ltd
Steve Ellis – Cathelco
Graham Hill – ECHA
David Hillis – Total E& P UK Ltd
Briony Holmes – TWI
Steve McCoy – Special Metals

     Aneel Mumtaz - Cathelco
Ivan Richardson - Copper Alloys
Jon Smith – EDF Energy
Ben Turner – Copper Alloys
Geoff Warburton - NeoNickel

The meeting was opened by the Chairman, Phil Dent, who welcomed everyone to the meeting. He also explained that the Management Committee share the general concern that there are too few good students becoming Corrosion Engineers, or similar. To make some contribution to addressing this problem, it had been decided to offer up to 4 free student places to each meeting, and universities had been contacted with invitations. The first two, from Prof Anne Neville’s Department in Leeds, were attending today. A particular welcome was extended to them.

 1.      TECHNICAL PRESENTATIONS (part 1)

1.1  ‘Improving HISCC Resistance of ZERON 100 Super Duplex Stainless Steels’, Glenn Byrne, Rolled Alloys

1.2  ‘Corrosion Issues on Ships’ by Clive Tuck, William Wistance and Colin Waylen Lloyd’s Register EMEA

2.      OPEN FORUM.  

2.1             Chris Lynch (CorrPro) asked whether anyone knew of a good accelerated testing procedure for magnesium anodes. The answer given was that ASTM G813 gave very satisfactory results, although this test is not carried out in seawater. Apparently, the performance of magnesium anodes has changed during the recent past. For many years, the anodes were manufactured from magnesium made by the Dow process and they had a stable composition range. Now they are largely made in China by the Pigeon process and the composition is somewhat more variable, but generally the trace elements are lower. As result of this, during the last few years, the coulombic efficiency (capacity) of SOME the anodes has fallen from around 1200 Ah/kg to, in some cases, as low as 300 Ah/kg. Therefore, there is a need to type test batches. 

2.2             Robin Oakley (QinetiQ) asked a question concerning a floating metal box in seawater for which the application was not given. In service, access to the box would be difficult and the question was how growth of sulphide-reducing bacteria could be prevented, as access to the inside of the box would be restricted in service. One suggestion was to put cathodic protection on the inside of the box, which was thought possible, although the fact that the box was moving in service would mean that the protection system would have to move as well. The use of biosensors was also mentioned, although these are still at least 2 years away. 

2.3             Marco Rapone (GE Oil & Gas) asked about superduplex stainless steel tube which had been formed by cold bending up to 15% as induction bending was not available (induction bending was difficult to do so cold bending was applied instead). The main answer given was that it is known that 7-10% cold worked tube does not seem to be affected by hydrogen charging. Also, small diameter tube (e.g. wall thickness 1.5mm) generally has a fine grain size which will reduce the possibility of cracking and allow a higher degree of cold bending to be applied. Norway tended to use cold bending for tube manufacturer a great deal so they may have more information on the effect of cold work on properties. Apparently, the maximum figure cold working figure of 15% cold work has been used for many years and it is thought to be derived from work on avoiding sulphide stress corrosion cracking. 

3   MCF NEWS   

This had been given at the start of the meeting.

4.    TECHNICAL PRESENTATIONS  (part 2):

4.1 ‘Microbiologically Influenced Corrosion in Offshore Environments. Have we seen the limits of microbial action?’, Felipe Leon Morales, Endures (TNO), Netherlands

4.2  ‘Corrosion Performance of Metals for the Marine Environment - a different perspective?’, Carol Powell, Copper Development Association & Nickel Institute

The Chairman closed the meeting at approx. 3:45 pm

 


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