MG Duff 2013 Comm broch:MGDuff ComCat 18/06/2013 15:39 Page 1 rcial Comme & Marine l a Industri 0 Issue 2. CathodiC ProteCtion ProduCt Guide

MG Duff 2013 Comm broch:MGDuff ComCat 18/06/2013 15:39 Page 2 MGDUFF is the UK’s oldest and most experienced cathodic protection company offering more than 400 different types of anodes for every application in all water conditions. We set the standard for ship and small craft corrosion protection over fifty years ago and our continuous development keeps pace with modern corrosion prevention requirements. Commercial Marine MGduFF marine cathodic protection systems are specified and fitted by leading yacht and boat builders, commercial shipping companies and ship repair yards. experienced and...

MGDUFF’s foundry located at the head office in Chichester provides the ability to meet short lead time requirements, whilst keeping stock levels up to maximum capacity to provide next day delivery across the U.K. Our anodes are manufactured to strict quality standards through an ISO 9001 Quality Management System. In addition our zinc anodes meet US Mil-A-18001K specification code. Each melt is tested using the in house spectrometer to check the correct chemical composition ensuring the necessary weight of alloying metals such as, Cadmium, lead and Indium (a rare earth metal) are used. Testing...

Please note that the following is a sample of our Zinc anode range, other sizes and weights are available. Please contact us for further information or visit www.mgduff.co.uk

105ZHD Zinc Bolt-on Anode MTZ20SH Zinc Hanging Anode With insulated electrical cable ZD75 Zinc Weld-on Anode ZD78 Zinc Weld-on Anode ZD60 Zinc Weld-on Anode ZD80 Zinc Weld-on Anode

Zinc Weld-on Anode MHZ Custom Sizes MGDuff are able to manufacture bespoke Zinc weld on and bolt on anodes from our adjustable moulds

Please note that the following is a sample of our Aluminium anode range, other sizes and weights are available. Please contact us for further information or visit www.mgduff.co.uk

AD78 Aluminium Weld-on Anode AD60 Aluminium Weld-on Anode AD80 Aluminium Weld-on Anode AD73 Aluminium Weld-on Anode AD72 Aluminium Weld-on Anode AD82 Aluminium Weld-on Anode

mhab7 Zinc Bolt-on Anode MGDuff are able to manufacture

MG Duff 2013 Comm broch:MGDuff ComCat 18/06/2013 15:39 Page 11 MAgnESIuM ALLoy HuLL AnodES MD79 Magnesium Weld-on Anode a MD78 Magnesium Weld-on Anode a MD80 Magnesium Weld-on Anode a MD73 Magnesium Weld-on Anode a MD72 Magnesium Weld-on Anode a 907MT Hemispherical Magnesium Hanging Anode a

MG Duff 2013 Comm broch:MGDuff ComCat 18/06/2013 15:39 Page 12 BALLASt tAnk AnodES a wide range of fixing arrangements and clamps are available from stock Straight Core arrangement double Cranked Core arrangement 3 MGduff Zinc and aluminium Ballast tank anodes are manufactured to the highest standards with full batch traceability 3 MGduff will design sacrificial anode cathodic protection systems for all ballast tank applications 3 MGduff will carry out tank corrosion inspections and advise on cathodic protection requirements 3 MGduff carry extensive stocks of zinc and aluminium ballast tank anodes...

MHA Custom Sizes MGDuff are able to manufacture bespoke Zinc weld on and bolt on anodes from our adjustable moulds

MG Duff 2013 Comm broch:MGDuff ComCat 18/06/2013 15:39 Page 14 MonItor ALuMInIuM ALLoy BALLASt tAnk AnodES Please note that the following is a sample of our Aluminium anode range, other sizes and weights are available. Please contact us for further information or visit www.mgduff.co.uk Specification Code Composition iron others each Capacity- amp.hr/kg MTA4 Aluminium Weld/clamp-on Anode a MTA8 Aluminium Weld/clamp-on Anode a MTA12 Aluminium Weld/clamp-on Anode a MTA17 Aluminium Weld/clamp-on Anode a MTA20 Aluminium Weld/clamp-on Anode a MHA Custom Sizes MGDuff are able to manufacture bespoke...

MG Duff 2013 Comm broch:MGDuff ComCat 18/06/2013 15:39 Page 15 BALLASt tAnk dESCALIng Magnesium Ribbon for Rapid Descaling de-scaling ballast tanks with magnesium ribbon offers ship owners and managers a cost effective solution to what can otherwise be a very labour intensive process. this type of system can be installed very simply by two or three people and does not require staging or shot blasting equipment. the ribbon is light and flexible and is fixed with screw down clamps. the Process utilises magnesium ribbon, a continuous length of extruded high purity magnesium of rectangular section...

MG Duff 2013 Comm broch:MGDuff ComCat 18/06/2013 15:39 Page 16 BondIng SyStEMS MG duff Shaft earthing Systems meet the requirements of BS Code of Practice CP.1021 as well as major engine manufacturer’s recommendations. the shaft earthing systems provides a direct connection from a steel ship’s hull to the propeller, extending the ships cathodic protection to this large unprotected area. it can also be used on GrP vessels to provide continuity from the hull mounted anodes to the prop and shaft. the highly efficient silver tracked slip rings and silver graphite brushes also reduce the effect of...

MG Duff 2013 Comm broch:MGDuff ComCat 18/06/2013 15:39 Page 17 IMprESSEd CurrEnt CAtHodIC protECtIon SyStEMS ANODES P.1 & S.1 ANODES P.2 & S.2 PORT ELECTRODE R.1 MAIN CATHODE CONNECTION TO ADJACENT FRAME OR HULL MEMBER. the MG duff system converts the ship’s a.c. supply into a controlled low voltage d.c. output, which is then delivered onto the metal surface by long life anodes attached to, but insulated from the hull structure. Various factors affect the amount of current required, therefore to ensure the correct level of protection is accurately controlled it is necessary to measure the potential...

MG Duff 2013 Comm broch:MGDuff ComCat 18/06/2013 15:39 Page 18 ZIngA Zinga is a film galvanising system comprising precisely milled zinc particles suspended in a unique aromatic liquid base. Zinga will bond to any prepared steel substrate to form a finished surface layer of 96% zinc. Zinga offers all the advantages of hot-dip galvanising and thermal zinc spray but without the application and overcoating problems. Zinga has been approved to NORSOK Standard M- 501 Revision 5 to meet the exacting demands of the Oil and Gas Industry. Zinga’ Properties: 3 Is easy to use – apply by brush, roller, spray...