... Abstract The OFG AUV non-contact integrated Cathodic Protection (iCP) inspection system enables a fast and reliable approach to monitoring the state of cathodic protection systems on subsea pipelines. By measuring the electric field, the system monitors directly the change in electrical...

... ABSTRACT Deep water presents additional problems when designing a cathodic protection (CP) system for a pipeline. Various factors resultingj70m deep warer alone influence how a cathodic protection system operates. As Thompson and Fischer stated in OTC 6888 1 , "The effect of deep water...

... ABSTRACT The purpose of this paper is to outline some available technologies and methods for monitoring of offshore pipeline and platform cathodic protection systems. There is discussion on local regulatory compliance and the best ways to get the most from an offshore survey dollar. Some...

... rate of corrosion of the underwater portions of the platform structures. loading retrospective environmental condition oilfield chemistry corrosion management subsea system inspection design criteria cathodic protection system cook inlet platform operation cook inlet tide strength...

... ABSTRACT To minimise weight, the floating hull of the Hutton Tension Leg Platform was designed with no corrosion allowance on plate thickness, except in the splash zone. Continuous satisfactory operation of the impressed current cathodic protection system, installed to prevent corrosion...

... ABSTRACT Following a recent inspection, approximately 60 km of a 138 km methanol pipeline was found to be under-protected due to the premature consumption of the original zinc bracelet sacrificial anodes. The cathodic protection system had been designed to last 40 years accommodating uniform...

... ABSTRACT New sacrificial anode protection criteria were developed and applied to the cathodic protection system of Platform "JJ" which was installed in the Arabian Gulf in September 1982. The new design resulted in a 40 percent decrease in anode weight, and with 15 fewer anodes than required...

... ABSTRACT The Cathodic Protection System installed on the Murchison Platform sets new standards for the operation of cathodic protection in the arduous conditions of the North Sea. It has demonstrated its effectiveness and flexibility since being commissioned in November 1980. Extensive data...

... corrosion inhibition post processor upstream oil & gas anode element mesh conventional approach new versatile method oilfield chemistry production chemistry element method model generator cathodic protection system h2s management corrosion management aTC 4567 A New Versatile Method...

... ABSTRACT The trend to unattended maintenance-free cathodic protection systems for offshore structures will be accelerated if improvements in sacrificial designs become more cost effective. Reduced anode weight for a given life and current density show promise in satisfying this need...

..., identification of interferences between adjacent cathodic protection systems, the location of areas where pipeline insulation had broken down. The evolution with time of the cathodic protection demand over each and every pipe section was analysed and whenever possible all readings were cross checked for accuracy...

... ABSTRACT Principles and particular for monitoring of offshore cathodic protection systems are reviewed and advantages and disadvantages of different methods for potential measurements currently being used in the North Sea are discussed. Potential measurements provides very valuable...

... some of these experiences. It also gives some background information about the special environmental conditions in the North Sea and their influence on cathodic protection systems. The main part of the paper is. devoted to the installation of a field testing equipment for measuring current output...

... ABSTRACT Seven techniques are possible for the evaluation of the operation of cathodic protection systems on buried marine pipelines. The economics, theory, advantages, and the limitations of each are presented and contrasted. Results of the developmental efforts and field application...

... Abstract With over 1200 platform years of offshore cathodic protection experience in the Gulf of Mexico, Exxon Company, U. S.A., using underwater inspection techniques, has evaluated the effectiveness of four basic types of cathodic protection systems. The results of the evaluation...

.... INTRODUCTION Recent diver inspections of both protected and unprotected structures of three major operators in the Gulf of Mexico revealed dramatic differences in the condition of the underwater portion of the structures equipped with effective cathodic protection systems and those with ineffective systems...

... ABSTRACT Environmental conditions should and definitely do influence the design of cathodic protection systems for corrosion mitigation on marine structures in all areas of the world. Selection of components of the corrosion mitigation systems are influenced by environmental conditions from...

... ABSTRACT New designs of large offshore steel structures in deep waters call for new concepts and criteria in design of effective impressed current cathodic protection systems with automatic control. The even current distribution can be endangered by an incorrect distribution of anodes...

... important. Engineers who specify, buy and operate cathodic protection should, at least, acquaint themselves with the basic principles of corrosion and design of cathodic protection systems. Certainly, this paper, or even a complete textbook on the subject, would be insufficient to instantaneously create...