Designing an ICCP System for the Hull of an Arctic Ice-Breaking Vessel

Save this PDF as:
 WORD  PNG  TXT  JPG

Size: px
Start display at page:

Download "Designing an ICCP System for the Hull of an Arctic Ice-Breaking Vessel"

Transcription

1

2 Designing an ICCP System for the Hull of an Arctic Ice-Breaking Vessel Kathy Riggs Larsen, Associate Editor Researchers use modeling tools to design effective cathodic protection systems that address challenging seawater conditions and coating damage from ice abrasion FFor many decades the maritime industry has depended on icebreaker ships to forge a path through ice-covered waters so other ships can safety navigate the trade routes in the polar regions of the world. Scientific studies carried out in the Arctic and Antarctic also have relied on icebreakers for support. More recently, ice-breaking vessels are being used to assist offshore drilling in the Arctic seas by supplying equipment and supplies to drilling sites as well as managing nearby ice floes and icebergs. Several characteristics differentiate ice-breaking ships from other ships: a strengthened hull, an ice-clearing shape that is specifically designed to direct broken ice around or under the vessel, and the power to push through sea ice. 1 Ice along the Northern Sea Route in the Arctic Circle varies from 4 to 6.5 ft (1.2 to 1.8 m) during the winter, and in central parts of the Arctic Ocean, the ice averages 8 ft (2.4 m) thick. 2 The effects of breaking ice can be extremely destructive to the steel hull of an ice-breaking vessel. Ice abrasion can damage the external hull s protective coating, which leads to exposure of bare steel and rapid corrosion. To protect the hulls of these ships from corrosion, a combination of protective coatings and impressed current cathodic protection (ICCP) is often used. According to researchers Min-Jeong Lee, senior engineer, and Chae-Seon Lim, principal research engineer, both in the Material & Coating Research Department at Samsung Heavy Industries, Co., Ltd. (Geoje, Gyeongsangnam-do, South Korea), the performance of a CP system for a ship s external hull is dependent on several factors, including the geometry of the ship s hull, the resistivity of the surrounding seawater, the chemicals in the seawater, and the degree of coating damage. The ICCP design for many commercial vessels is often based on current density (CD) calculations and the designers experience rather than an analytical method. For an icebreaker travelling in Arctic conditions, the researchers note, this traditional approach to CP design may not result in an adequate amount of corrosion protection for the hull in this environment. There The effects of moving through ice can be extremely destructive to the steel hull of an ice-breaking vessel. Ice abrasion can damage the external hull s protective coating, which leads to exposure of bare steel and rapid corrosion. To protect the hulls of these ships from corrosion, a combination of protective coatings and ICCP is often used. 30 MARCH 2015 MATERIALS PERFORMANCE NACE INTERNATIONAL: VOL. 54, NO. 3

3 Designing an ICCP System for the Hull of an Arctic Ice-Breaking Vessel Potential distribution is modeled for an external hull in temperate climate conditions with a typical four-anode ICCP design. Since the hull is symmetrical, only half the hull is modeled. Image courtesy of Samsung Heavy Industries Co. Potential distribution is modeled for an external hull under Arctic conditions with a typical four-anode ICCP design. Image courtesy of Samsung Heavy Industries Co. are several challenges to consider, says Lee. One challenge is the resistivity of the Arctic seawater. Seawater resistivity is a function of salinity and temperature. Because of its lower salinity and cooler temperature, Arctic seawater has a higher resistivity than seawater in tropical or moderate climates, which, in turn, reduces the conductivity of the Arctic water and decreases the coverage of the CP current. Another challenge is the amount of CP current required for adequate protection, which is increased due to the high oxygen content of the Arctic seawater as well as its resistivity. Additionally, the hull coating damage experienced by an icebreaker is very different than the typical coating damage a ship would sustain in non-icy waters. To determine the optimum ICCP design for the external hull of an icebreaker, the researchers explored a modeling approach using computational analysis based on the boundary element method (BEM). Lee comments that modeling tools are often used to design ICCP for stationary offshore structures such as oil and gas production platforms; floating production, storage, and offloading (FPSO) units; and semisubmersible reefs; but they are not typically NACE INTERNATIONAL: VOL. 54, NO. 3 MATERIALS PERFORMANCE MARCH

4 Potential distribution is modeled for an external hull under Arctic conditions with a modified ICCP design that adds a pair of anodes along the sides of the hull. Image courtesy of Samsung Heavy Industries Co. Potential distribution for an external hull under Arctic conditions with an optimized ICCP design that comprises eight anodes. All areas of the hull are protected. Image courtesy of Samsung Heavy Industries Co. used to model CP for ship s hulls, especially the hull of an icebreaker. Basically, these tools are computer software packages that use data input about the conditions of the steel structure to be protected, such as polarization data, seawater resistivity, and coating breakdown, and information about the CP design, including the type, number, and location of the anodes and the CD, to calculate the effectiveness of the CP design for that particular structure. The tools create a virtual, three-dimensional model of the structure that uses color to illustrate the areas that are adequately protected by CP and areas that are not well protected and need additional CP coverage. The researchers used commercial modeling software (BEASY Corrosion & CP and BEASY ICCP Optimisation ) to better understand the differences in CP design requirements for the external hull of an ice-breaking ship vs. a typical commercial ship that usually travels in more temperate waters, and to determine if such a modeling tool, when compared to actual measurements, is a reliable technology for designing a CP system for a ship s hull. Criteria for Modeling a Typical Commercial Vessel As part of their study, the researchers modeled a typical ICCP design for the Trade name. external hull of a commercial vessel with a hull length of 200 to 300 m (e.g., container ships, tankers, and liquefied natural gas [LNG] carriers) in temperate climate conditions. This ICCP design consisted of four mixed metal oxide-coated titanium (MMO-Ti) anodes two anodes at the bow and two at the stern and four reference electrodes located at least 8 m from the anodes. The researchers applied the typical resistivity for open seawater with a temperature <10 C, which is 30 Ω cm. Using information based on a paint manufacturer s observations of coating damage during the dry docking of commercial vessels, the researchers assumed the maximum percentage of coating degradation at the end of the coating s design life ranged between 1 to 5%, depending on the region of the external hull. The coating breakdown they used was 5% at the bow, 3% on the sides, and 1% on the bottom. The CD needed to maintain the correct corrosion protection potential will vary according to operating conditions and is affected by the condition of the coating. For traditional ICCP system designs, the researchers comment that a constant CD is normally applied to the entire hull, and typically a mean CD of 35 ma/m 2 is used regardless of the coating condition. For this model, the researchers used a bare steel CD of 200 ma/m 2 based on guidelines published by Germanischer Lloyd 3 for temperate climate conditions, and multiplied it by the coating breakdown percentages (i.e., 1 to 5% [0.01 to 0.05]) to determine the required CD for the various regions of the external hull, which were 2 ma/m 2 for the bottom, 6 ma/m 2 for the sides, and 10 ma/m 2 for the bow. A steel potential of 850 mv vs. a silver/silver chloride reference electrode in seawater (Ag/AgCl/seawater) was chosen as the desired protection potential, and a potential of 2,000 mv vs. Ag/AgCl/seawater was selected as the maximum overprotection potential to safeguard coating integrity adjacent to the anodes. According to the researchers, most marine protective coatings can resist CP disbondment down to this negative potential value. The model, when Continued on page MARCH 2015 MATERIALS PERFORMANCE NACE INTERNATIONAL: VOL. 54, NO. 3

5 Continued from page 32 executed, displayed the potential distribution for this ICCP design and showed the potentials were within the targeted range and the entire external hull was protected against corrosion. The most positive potential was mv and the most negative potential was 1, mv. Criteria for Modeling an Ice-Breaking Vessel For comparison, the researchers modeled the same typical ICCP design for an external hull of a double-acting tanker (a type of ice-breaking cargo ship designed to run forward in open water and thin ice, and turn around and proceed astern in heavy ice conditions 4 ) that travels across the Barents Sea in the Arctic. The ICCP design used for the modeling research, four MMO-Ti anodes one pair at the bow and one pair at the stern and four reference electrodes, is very similar to the tanker s actual ICCP design, says Lee. The ship has a submerged hull area of 12,675 m 2 that is coated with a 500-µm thick layer of a solvent-free epoxy with low ice adhesion and good friction resistance, a formulation designed specifically to withstand ice impact and abrasions to ice-going vessels. About every two to five years, the vessel is put into dry dock for external hull coating maintenance. Using information on the end-of-service-life coating condition of other ice-class vessels traveling along the same Arctic sea route as the double-acting tanker and protected with the same applied coating system, the researchers assumed a coating breakdown of 5% for the bow and stern areas of the external hull where the ice load is heaviest. Coating breakdown for other regions of the external hull were assumed proportionally from an ice load value and varied from 1% for the flat bottom of the hull and 3% for the sides of the hull to 4% for the regions adjacent to the bow and stern. The resistivity of the Arctic sea water was defined by the researchers as 60 Ω cm, derived from a salinity of 1.9% and a temperature of 0 C, which they consider to be representative of the most severe conditions that can be encountered on an Arctic voyage. A steel potential of 800 mv vs. Ag/AgCl/seawater was chosen as the ideal protection potential, and the maximum overprotection potential selected was 2,000 mv vs. Ag/AgCl/seawater. For this model, the researchers used a bare steel CD of 250 ma/m 2 for Arctic conditions, per DNV-RP-B401, 5 and multiplied it by the coating breakdown percentages to determine the required CD for the various regions of the external hull, which were 2.5 ma/m 2 for the bottom; 5.0 and 7.5 ma/m 2 for the lower and upper sides, respectively; 10 ma/m 2 for areas bordering the bow and stern; and 12.5 ma/m 2 for the bow and stern. When run, the model showed that the typical ICCP design would not provide adequate corrosion protection for the hull in Arctic conditions, and leave large areas of the hull, particularly the sides and bottom, polarized with potentials less negative than 800 mv while overprotecting areas adjacent to the anodes. The most positive potentials were mv and the most negative were 2, mv. For this ship, the model determined that the ICCP design is not optimized, Lee observes, noting that the current from the four anodes was not enough to cover the entire hull. Optimizing the ICCP System The researchers explain that modeling can be used to optimize the ICCP system design by virtually rearranging the location of the anodes and reference electrodes on the external hull. The computer model can predict the resulting potentials of each design until uniform distribution of potentials on the hull is achieved, which ensures the protection potentials are within the specified range on the entire hull and under- and overprotection are avoided. This is helpful, they note, when the arrangement of anodes and reference electrodes must be restricted for various reasons, such as longitudinal arrangement of protuberances, risk of mechanic damage of anodes during voyages and/or at the pier, cabling installation limits in hazardous areas, etc. Because the typical ICCP design was not optimum for the double-acting tanker in Arctic conditions, the researchers modeled a second ICCP design. They added an anode pair in the middle of the external hull where the potential was most positive in the previous design. Although protection from CP improved, portions of the hull were still unprotected. The most positive potential was mv and the most negative was 2, mv. So another design was developed and modeled by the researchers that used a total of four pairs of anodes two pairs near the bow and two pairs near the stern. This configuration achieved full protection of the hull, with values of mv for the most positive potential and 1, mv for the most negative potential. Both values fell within the range set by the researchers between 800 and 2,000 mv. The researchers concluded that designing an ICCP system to provide optimum protection is complex, and precise placement of anodes and reference cells is important for vessels with varying degrees of coating degradation on the external hull. Using computational analysis and modeling was successful in determining that an ICCP system design is effective for a vessel exposed to Arctic seawater conditions. Going forward, Lee expects more use of CP modeling when designing ICCP systems for ship hulls, particularly those headed for the Arctic. More information on the modeling study can be found in CORROSION 2014 paper no. 4004, ICCP System Design on the Hull of an Ice Breaker by Computational Analysis, by M.-J. Lee and C.-S. Lim. References 1 Icebreaker, Wikipedia, the free encyclopedia, (February 10, 2015). 2 Nuclear-Powered Icebreaker, Wikipedia, the free encyclopedia, org/wiki/nuclear-powered_icebreaker (February 10, 2015). 3 Rules for Classification and Construction (Hamburg, Germany: Germanischer Lloyd, 2010). 4 Double Acting Ship, Wikipedia, the free encyclopedia, Double_acting_ship (February 10, 2015). 5 DNV-RP-B401, Cathodic Protection Design (Høvik, Norway: DNV, 2010). 34 MARCH 2015 MATERIALS PERFORMANCE NACE INTERNATIONAL: VOL. 54, NO. 3

The Application Of Computer Modeling To Improve The Integrity Of Ballast Tanks

The Application Of Computer Modeling To Improve The Integrity Of Ballast Tanks Paper No. 4255 The Application Of Computer Modeling To Improve The Integrity Of Ballast Tanks Robert Adey, Guy Bishop, John Baynham, CM BEASY Ltd Ashurst Lodge Southampton, SO40 7AA, UK ABSTRACT Generally

More information

Corrosion problems in seawater pump caissons. Practical solutions.

Corrosion problems in seawater pump caissons. Practical solutions. Corrosion problems in seawater pump caissons. Practical solutions. Svenn Magne Wigen FORCE Technology Norway AS Hornebergveien 7 7038 Trondheim, Norway Harald Osvoll FORCE Technology Norway AS Hornebergveien

More information

Hempadur Multi-Strength GF Unsurpassed low friction, abrasion and ice resistant coating

Hempadur Multi-Strength GF Unsurpassed low friction, abrasion and ice resistant coating Hempadur Multi-Strength GF 35870 Unsurpassed low friction, abrasion and ice resistant coating Proven protection for ice trading vessels If your vessel operates in icy waters, you need a coating that will

More information

Cathodic Protection and Underwater Survey for an Floating Storage Offloading (FSO) System

Cathodic Protection and Underwater Survey for an Floating Storage Offloading (FSO) System Cathodic Protection and Underwater Survey for an Floating Storage Offloading (FSO) System Michael Surkein*, Omarou Faricou & Joseph Kenmoe ExxonMobil *Mike is currently retired from ExxonMobil and Principal

More information

Approved. Property Test/Standard Description. gloss (70-85) Flash point ISO 3679 Method 1 55 C VOC-US/Hong Kong. US EPA method 24 (tested)

Approved. Property Test/Standard Description. gloss (70-85) Flash point ISO 3679 Method 1 55 C VOC-US/Hong Kong. US EPA method 24 (tested) Approved 577;576 1,2 577 epoxy ^(ValidationDate) 1 Product description This is a two component polyamine cured epoxy coating. It is a high build, solvent free product. It is highly scratch resistant. Suitable

More information

Règlement pour la navigation pour la zone arctique. Alexey DUDAL Marine Division Bureau VERITAS

Règlement pour la navigation pour la zone arctique. Alexey DUDAL Marine Division Bureau VERITAS Règlement pour la navigation pour la zone arctique Alexey DUDAL Marine Division Bureau VERITAS 1 Contents 1. Introduction 2. BV Rules and Guidelines for Ice-Going Vessels 3. Direct Calculation Tool 4.

More information

COMPARATIVE TESTING OF 31 TANK LINING SYSTEMS

COMPARATIVE TESTING OF 31 TANK LINING SYSTEMS COMPARATIVE TESTING OF 31 TANK LINING SYSTEMS Amal Al-Borno Charter Coating Service (2000) Ltd. #6, 4604 13th Street N.E. Calgary, AB, Canada T2E 6P1 aalborno@chartercoating.com PROJECT PARTICIPANTS Amercoat

More information

Special Considerations for Structural design and Fabrication for. tankers or similar vessels with Large Size (150m or more in length) in.

Special Considerations for Structural design and Fabrication for. tankers or similar vessels with Large Size (150m or more in length) in. Special Considerations for Structural design and Fabrication for tankers or similar vessels with Large Size (150m or more in length) in polar waters He. Guangwei Guangwei_ho@chinagsi.com Mai. Rongzhi MRZ@chinagsi.com

More information

Property Test/Standard Description

Property Test/Standard Description Approved 35042;33404 2 35042 epoxy ^(ValidationDate) 1 Product description This is a two component polyamine cured epoxy coating. It is a high build, solvent free product. It provides superior resistance

More information

Dissolved Oxygen Guide

Dissolved Oxygen Guide Educat i onser i es Di ssol vedoxygengui de Dissolved Oxygen Guide Introduction Dissolved oxygen probes provide a convenient approach to essentially direct measurement of molecular oxygen. The membrane

More information

Ship Resistance and Propulsion Prof. Dr. P. Krishnankutty Ocean Department Indian Institute of Technology, Madras

Ship Resistance and Propulsion Prof. Dr. P. Krishnankutty Ocean Department Indian Institute of Technology, Madras Ship Resistance and Propulsion Prof. Dr. P. Krishnankutty Ocean Department Indian Institute of Technology, Madras Lecture - 6 Bulbous Bow on Ship Resistance Welcome back to the class we have been discussing

More information

GUIDE TO THE ARCTIC SHIPPING CALCULATION TOOL

GUIDE TO THE ARCTIC SHIPPING CALCULATION TOOL ØRTS HANSEN, GRØNSEDT, LINDSTRØM GRAVERSEN AND HENDRIKSEN GUIDE TO THE ARCTIC SHIPPING CALCULATION TOOL THE NORTHERN SEA ROUTE VS. THE SUEZ CANAL ROUTE CBS MARITIME CROSS DISCIPLINARY PROBLEM-FOCUSED RESEARCH

More information

Life Extension of Mobile Offshore Units

Life Extension of Mobile Offshore Units Life Extension of Mobile Offshore Units Operation of classified aging units Sigmund Røine DNV Mobile Offshore Units in Operation Presentation content MOU integrity during operation Survey Principles for

More information

APPENDIX D. Assessment of Ship Impact Frequencies

APPENDIX D. Assessment of Ship Impact Frequencies APPENDIX D Assessment of Ship Impact Frequencies WHITE ROSE DEVELOPMENT APPLICATION APPENDIX D ASSESSMENT OF SHIP IMPACT FREQUENCIES SUBMITTED BY: HUSKY OIL OPERATIONS LIMITED AS OPERATOR SUITE 801, SCOTIA

More information

Sacrificial anodes for protection of seawater pump caissons against galvanic corrosion. Jan Heselmans Corrodium bv Planetenweg 5 NL-2132 HN Hoofddorp

Sacrificial anodes for protection of seawater pump caissons against galvanic corrosion. Jan Heselmans Corrodium bv Planetenweg 5 NL-2132 HN Hoofddorp Paper No. 11056 2011 Sacrificial anodes for protection of seawater pump caissons against galvanic corrosion Jan Heselmans Corrodium bv Planetenweg 5 NL-2132 HN Hoofddorp Nico (Ko) W. Buijs Innomet bv Rijksstraatweg

More information

Abstract. 1 Introduction

Abstract. 1 Introduction Parametric analysis of hull structure of mono- and catamaran-type inland vessels T. Jastrzebski & Z. Sekulski Faculty ofmaritime Technology, Technical University of Szczecin, AL Piastow 41, 71-065 Szczecin,

More information

Flexible hoses - Non-metallic materials

Flexible hoses - Non-metallic materials CLASS PROGRAMME Type approval DNVGL-CP-0183 Edition December 2015 The electronic pdf version of this document, available free of charge from http://www.dnvgl.com, is the officially binding version. FOREWORD

More information

Yamal LNG Carrier Development

Yamal LNG Carrier Development Yamal LNG Carrier Development 2 nd March, 2017 DSME History of Cooperation between DSME and First co-operation agreement between Daewoo Shipbuilding & Marine Engineering and Technology was signed and entered

More information

Skipsoperasjoner i Nord

Skipsoperasjoner i Nord Skipsoperasjoner i Nord Tor Einar Berg, Joachim Bakke, BW Gas Bård E. Bjørnsen, SMS Seminar Maritim innovasjon 2007 Introduction The presentation will summarize results from the projects: Arctic Emergency

More information

Polatrak ROV II - Tip Contact Probe Operation Manual

Polatrak ROV II - Tip Contact Probe Operation Manual This PDF document contains Live Web Links Click them for more information from the web Polatrak ROV II - Tip Contact Probe Operation Manual A Cathodic Protection Probe with dual Ag/AgCl reference cells

More information

PASSENGER SHIPS Guidelines for preparation of Hull Structural Surveys

PASSENGER SHIPS Guidelines for preparation of Hull Structural Surveys (Feb 2010) PASSENGER SHIPS Guidelines for preparation of Hull Structural Surveys Contents 1 Introduction 2 Preparations for Survey 2.1 General 2.2 Conditions for survey 2.3 Access to structures 2.4 Survey

More information

Structural Assessment. USS Yorktown CV-10

Structural Assessment. USS Yorktown CV-10 Structural Assessment of USS Yorktown CV-10 Assessment Team USS Yorktown History Constructed December 1941- January 1943 Essex Class CV-10 10 th USS Navy Aircraft Carrier Served in WWII Modified in 1955

More information

LNG TANDEM OFFLOADING A KEY ENABLING TECHNOLOGY TO MAKE LNG PRODUCTION OFFSHORE HAPPEN

LNG TANDEM OFFLOADING A KEY ENABLING TECHNOLOGY TO MAKE LNG PRODUCTION OFFSHORE HAPPEN LNG TANDEM OFFLOADING A KEY ENABLING TECHNOLOGY TO MAKE LNG PRODUCTION OFFSHORE HAPPEN Fabrice Dumortier 1, Jean-Pierre Queau 1, Jean-Robert Fournier 2 1. SBM Offshore 2. SBM Offshore Keywords: 1. LNG;

More information

Deep Water Currents Lab

Deep Water Currents Lab Deep Water Currents Lab Background: Anyone visiting the seashore is struck by the constant motion of water traveling on the surface of the ocean in the form of waves. But beneath the ocean's surface, water

More information

Oxymax W COS51D. Technical Information. Digital sensor for measuring dissolved oxygen Membrane-covered amperometric sensor

Oxymax W COS51D. Technical Information. Digital sensor for measuring dissolved oxygen Membrane-covered amperometric sensor Technical Information Oxymax W COS51D Digital sensor for measuring dissolved oxygen Membrane-covered amperometric sensor Application The continuous measurement of the concentration of dissolved oxygen

More information

Crew Training for NSR Shipping

Crew Training for NSR Shipping Crew Training for NSR Shipping Standards for Training, Certification & Watchkeeping (STCW) IMO s STCW -- is the international set of rules regulating the overall education and training requirements for

More information

RIGID RISERS FOR TANKER FPSOs

RIGID RISERS FOR TANKER FPSOs RIGID RISERS FOR TANKER FPSOs Stephen A. Hatton 2H Offshore Engineering Ltd. SUMMARY Recent development work on the subject of dynamic rigid (steel pipe) risers demonstrates that their scope of application

More information

Offshore // Marine // Subsea Cable solutions that thrive under pressure

Offshore // Marine // Subsea Cable solutions that thrive under pressure Offshore // Marine // Subsea Cable solutions that thrive under pressure Underwater and pressure resistant cables and harnesses for your needs For over 40 years Habia Cable has developed and manufactured

More information

The Facts & Myths About Shorted Casings

The Facts & Myths About Shorted Casings The Facts & Myths About Shorted Casings Presented to TEG 292X [35,05] Direct Assessment Methodology Application 10 September 2006 by Earl L. Kirkpatrick, P.E. ELK Engineering Associates, Inc. There Ain

More information

Numerical and Experimental Investigation of the Possibility of Forming the Wake Flow of Large Ships by Using the Vortex Generators

Numerical and Experimental Investigation of the Possibility of Forming the Wake Flow of Large Ships by Using the Vortex Generators Second International Symposium on Marine Propulsors smp 11, Hamburg, Germany, June 2011 Numerical and Experimental Investigation of the Possibility of Forming the Wake Flow of Large Ships by Using the

More information

IMO S POLAR CODE AND CANADIAN IMPLEMENTATION

IMO S POLAR CODE AND CANADIAN IMPLEMENTATION IMO S POLAR CODE AND CANADIAN IMPLEMENTATION FEDNAV LIMITED ARCTIC EXPERIENCE 60 years of Arctic Trading More than 30 Million tonnes of cargo carried In excess of 850 voyages No pollution incidents Fednav

More information

GLD TM Ballast Water Treatment System

GLD TM Ballast Water Treatment System GLD TM Ballast Water Treatment System APPROVED AMS APPROVED In-tank, in-voyage, inspired The Coldharbour Marine approach to BWT is absolutely unique Who is it for? Coldharbour GLD (Gas Lift Diffusion)

More information

Arctic Emergency Operations

Arctic Emergency Operations Arctic Emergency Operations Main project application forwarded to Research Council of Norway (RCN) on October 13, 2005 Project approved December 2005 Kick-off meeting in Trondheim 9-10 March, 2006 Project

More information

U.S. COAST GUARD APPROVED to ASTM F EXCLUSIVELY PHENOLIC FIRE INTEGRITY COMPOSITE GRATING

U.S. COAST GUARD APPROVED to ASTM F EXCLUSIVELY PHENOLIC FIRE INTEGRITY COMPOSITE GRATING U.S. COAST GUARD APPROVED to ASTM F3059-15 EXCLUSIVELY PHENOLIC FIRE INTEGRITY COMPOSITE GRATING FIRE INTEGRITY COMPOSITE GRATING DURAGRID Phenolic Grating continues to set the world offshore standard

More information

What hull material types will the system work on? Do I still need an antifoul paint?

What hull material types will the system work on? Do I still need an antifoul paint? 1. The Hull What hull material types will the system work on? The system is effective on all GRP (Glass Reinforced Plastic), STEEL and ALUMINIUM hulls up to thickness of 70mm. Unfortunately the system

More information

Exploitation roughness of the hull and its influence on the ship s resistance

Exploitation roughness of the hull and its influence on the ship s resistance CDQM, Volume 11, Number 3, 2008, pp. 61-66 COMMUNICATIONS IN DEPENDABILITY AND QUALITY MANAGEMENT An International Journal UDC 629.5.024:620.191.35 Exploitation roughness of the hull and its influence

More information

GLD TM Ballast Water Treatment System

GLD TM Ballast Water Treatment System GLD TM Ballast Water Treatment System APPROVED AMS APPROVED In-tank, in-voyage, inspired The Coldharbour Marine approach to BWT is absolutely unique Who is it for? Coldharbour GLD (Gas Lift Diffusion)

More information

RULES PUBLICATION NO. 52/P UNDERWATER INSPECTION OF MOBILE OFFSHORE DRILLING UNITS IN LIEU OF DRYDOCKING

RULES PUBLICATION NO. 52/P UNDERWATER INSPECTION OF MOBILE OFFSHORE DRILLING UNITS IN LIEU OF DRYDOCKING RULES PUBLICATION NO. 52/P UNDERWATER INSPECTION OF MOBILE OFFSHORE DRILLING UNITS IN LIEU OF DRYDOCKING 2001 Publications P (Additional Rule Requirements) issued by Polski Rejestr Statków complete or

More information

IACS URS11 defines the dimensioning wave load for ship design, but what does it mean from a statistical point of view?

IACS URS11 defines the dimensioning wave load for ship design, but what does it mean from a statistical point of view? IACS URS11 defines the dimensioning wave load for ship design, but what does it mean from a statistical point of view? Seamocs meeting in Malta Gaute Storhaug, DNV Maritime 19th of March 2009 Overview

More information

Experience and Future Potential of the Oblique Icebreaker

Experience and Future Potential of the Oblique Icebreaker SHIP Design & Engineering CONSULTING & Project Development ICE MODEL & Full Scale Testing OFFSHORE Development Experience and Future Potential of the Oblique Icebreaker Mika Hovilainen Project Manager

More information

Offshore Support Vessels & Work Boats. [English]

Offshore Support Vessels & Work Boats. [English] Offshore Support Vessels & Work Boats [English] - A World Leade With more than 250 million gross tons on our register, ClassNK is one of the world s largest classification societies. The hallmark of this

More information

Development of Technology to Estimate the Flow Field around Ship Hull Considering Wave Making and Propeller Rotating Effects

Development of Technology to Estimate the Flow Field around Ship Hull Considering Wave Making and Propeller Rotating Effects Development of Technology to Estimate the Flow Field around Ship Hull Considering Wave Making and Propeller Rotating Effects 53 MAKOTO KAWABUCHI *1 MASAYA KUBOTA *1 SATORU ISHIKAWA *2 As can be seen from

More information

GAS TANKER COMMITTEE #4

GAS TANKER COMMITTEE #4 GAS TANKER COMMITTEE #4 FSRU-Critical link in Global LNG Supply chain Singapore 12 th October 2017 Lian-Gee CHUA, DNV GL 12 October 2017 1 SAFER, SMARTER, GREENER ABOUT DNV GL - The leading classification

More information

Materials Performance November Nitrogen generator inhibits corrosion within fire protection systems

Materials Performance November Nitrogen generator inhibits corrosion within fire protection systems Materials Performance November 2014 Nitrogen generator inhibits corrosion within fire protection systems When dry and pre-action fire protection systems experience internal corrosion in their piping network,

More information

How to Select and Specify Mixers for Potable Water Storage Tanks

How to Select and Specify Mixers for Potable Water Storage Tanks How to Select and Specify Mixers for Potable Water Storage Tanks A Resource For Engineers and Operators Introduction Mixing in potable water storage tanks is increasingly recognized as an important factor

More information

Study on Resistance of Stepped Hull Fitted With Interceptor Plate

Study on Resistance of Stepped Hull Fitted With Interceptor Plate 39 Study on Resistance of Stepped Hull Fitted With Interceptor Plate Muhamad Asyraf bin Abdul Malek, a, and J.Koto, a,b,* a) Department of Aeronautic, Automotive and Ocean Engineering, Faculty of Mechanical

More information

Seawater pipework anti-fouling systems Impressed current cathodic protection systems

Seawater pipework anti-fouling systems Impressed current cathodic protection systems Seawater pipework anti-fouling systems Impressed current cathodic protection systems World leading technology for the offshore oil industry A single source solution for semisubmersibles, FPSOs and FSOs

More information

pvc well casing & drop pipe

pvc well casing & drop pipe C e r t a i nte e d pvc well casing & drop pipe P V C We l l P r o d u c t s Sure Fit PVC well casing and drop pipe have gained broad acceptance since their introduction almost 40 years ago. Today, due

More information

Cathodic Protection Retrofit Options Comparison of Current Distribution

Cathodic Protection Retrofit Options Comparison of Current Distribution Cathodic Protection Retrofit Options Comparison of Current Distribution 1.0 Introduction There are three basic methods available for the deployment of anode systems when considering an offshore cathodic

More information

11. Aquasalt. Aquasalt Aquasalt 440. Salt electrolysis demonstration 442. Spare parts and Accessories 443. Chemical Products

11. Aquasalt. Aquasalt Aquasalt 440. Salt electrolysis demonstration 442. Spare parts and Accessories 443. Chemical Products . 434. 440. Salt electrolysis demonstration 442. Spare parts and Accessories 443. Chemical Products 432 433 Pleasure and benefits for our health removes the unpleasant smell from chlorine in your swimming

More information

Internal riser inspections on FPSO storage & production facilities

Internal riser inspections on FPSO storage & production facilities Internal riser inspections on FPSO storage & production facilities by Jurgen F P Elbertse A Hak Industrial Services bv, Rhenen, Netherlands Contents of this Paper: Introduction Preparations Testing Mobilization

More information

Autodesk Moldflow Communicator Process settings

Autodesk Moldflow Communicator Process settings Autodesk Moldflow Communicator 212 Process settings Revision 1, 3 March 211. Contents Chapter 1 Process settings....................................... 1 Profiles.................................................

More information

Property Test/Standard Description. semi gloss (35-70) Flash point ISO 3679 Method 1 35 C calculated IED (2010/75/EU) (theoretical)

Property Test/Standard Description. semi gloss (35-70) Flash point ISO 3679 Method 1 35 C calculated IED (2010/75/EU) (theoretical) Approved 528;529 1,2 528 epoxy mastic ^(ValidationDate) 1 Product description This is a two component amine cured epoxy mastic coating. It is a surface tolerant, high solids, high build product. Specially

More information

Operating Manual for. SUPPORT jacks

Operating Manual for. SUPPORT jacks Operating Manual for SUPPORT jacks 1. Operating/ Safety Limits Operators using support jacks should use caution and follow all appropriate laboratory safety guidelines during operation, including wearing

More information

DRILLING HOSE SOLUTIONS

DRILLING HOSE SOLUTIONS DRILLING HOSE SOLUTIONS HIGH PRESSURE FLEXIBLE LINES FOR A WIDE RANGE OF DRILLING APPLICATIONS HIGH QUALITY - HIGH STANDARD WE DELIVER ACCORDING TO THE HIGHEST LEVELS OF SPECIFICATIONS AND STANDARDS WITH

More information

The OTSS System for Drift and Response Prediction of Damaged Ships

The OTSS System for Drift and Response Prediction of Damaged Ships The OTSS System for Drift and Response Prediction of Damaged Ships Shoichi Hara 1, Kunihiro Hoshino 1,Kazuhiro Yukawa 1, Jun Hasegawa 1 Katsuji Tanizawa 1, Michio Ueno 1, Kenji Yamakawa 1 1 National Maritime

More information

Designed for both global and coastal trade. Recommended for exposure to both sea and fresh water during newbuilding outfitting. Antifouling.

Designed for both global and coastal trade. Recommended for exposure to both sea and fresh water during newbuilding outfitting. Antifouling. Approved 19280 2 19280 silyl acrylate antifoulings ^(ValidationDate) 1 Product description This is a one component state of the art chemically hydrolysing silyl acrylate antifouling coating. It provides

More information

Rules for Classification and Construction Additional Rules and Guidelines

Rules for Classification and Construction Additional Rules and Guidelines VI Rules for Classification and Construction Additional Rules and Guidelines 11 Other Operations and Systems 6 Guidelines for the Preparation of Damage Stability Calculations and Damage Control Documentation

More information

EVOLUTION OF RUPTURE DISC MANUFACTURING TECHNOLOGY AND PERFORMANCE

EVOLUTION OF RUPTURE DISC MANUFACTURING TECHNOLOGY AND PERFORMANCE EVOLUTION OF RUPTURE DISC MANUFACTURING TECHNOLOGY AND PERFORMANCE Mario Modena, Antonio Donadon, Cristian Barbi Summary Rupture disc properties and application parameters Evolution of rupture disc models

More information

Fire and Safety for Offshore drilling and production Ajey Walavalkar ANSYS Inc.

Fire and Safety for Offshore drilling and production Ajey Walavalkar ANSYS Inc. Fire and Safety for Offshore drilling and production Ajey Walavalkar ANSYS Inc. 1 ANSYS, Inc. September 12, Fire and safety related applications Gas Dispersion and Ventilation Formation of combustible

More information

DNVGL-CP-0187 Edition March 2016

DNVGL-CP-0187 Edition March 2016 CLASS PROGRAMME Type approval DNVGL-CP-0187 Edition March 2016 The electronic pdf version of this document, available free of charge from http://www.dnvgl.com, is the officially binding version. FOREWORD

More information

Polar Research Vessel Operational Requirements and Summary of Technical Studies

Polar Research Vessel Operational Requirements and Summary of Technical Studies Polar Research Vessel Operational Requirements and Summary of Technical Studies Presentation to UNOLS by Jim St John Science and Technology Corporation - Polar Technology Office Why a New Antarctic Research

More information

Wind Tunnel Testing Guidance. Arjan Voogt

Wind Tunnel Testing Guidance. Arjan Voogt Wind Tunnel Testing Guidance Arjan Voogt WIND TUNNEL TESTING Proven method for airplanes, city planning, car design competitive cycling, rockets trajectories and skiing BUT NOT ACCEPTED BY USCG IN STABILITY

More information

APPENDIX A TWO-LANE RURAL ROADS ELEMENTS OF DESIGN CREST VERTICAL CURVES

APPENDIX A TWO-LANE RURAL ROADS ELEMENTS OF DESIGN CREST VERTICAL CURVES APPENDIX A TWO-LANE RURAL ROADS ELEMENTS OF DESIGN CREST VERTICAL CURVES 1. Two-lane Rural Roads 1.1 Introduction The definition of rural area can be derived from the definition of urban areas. Officially,

More information

Exclusive interview: Drydocks World Dubai

Exclusive interview: Drydocks World Dubai SEPTEMBER 2012 Exclusive interview: Drydocks World Dubai Gas turbines Extend maintenance intervals without affecting performance How to maintain climate specialist vessels during operation Australian Navy

More information

photos by JURIJ KORENC production STUDIO 37

photos by JURIJ KORENC production STUDIO 37 photos by JURIJ KORENC production STUDIO 37 www.studio37.si Elan Marine d.o.o. Begunje 1, SI-4275, Begunje na Gorenjskem, Slovenia Phone: +386 4 535 13 70, Fax: +386 4 535 13 60 E-mail: elan.marine@elan.si

More information

Modeling Case Study: Surge Tanks, Valves, Level sensors, and modeling

Modeling Case Study: Surge Tanks, Valves, Level sensors, and modeling Modeling Case Study: Surge Tanks, Valves, Level sensors, and modeling By Peter Woolf (pwoolf@umich.edu) University of Michigan Michigan Chemical Process Dynamics and Controls Open Textbook version 1.0

More information

DETERMINATION OF THE DEPTH OF CLOSED BLIND CRACKS IN NON-METAL CHECK SAMPLES AND TEST PANELS FOR PENETRANT TESTING

DETERMINATION OF THE DEPTH OF CLOSED BLIND CRACKS IN NON-METAL CHECK SAMPLES AND TEST PANELS FOR PENETRANT TESTING DETERMINATION OF THE DEPTH OF CLOSED BLIND CRACKS IN NON-METAL CHECK SAMPLES AND TEST PANELS FOR PENETRANT TESTING Nikolay Kalinichenko 1, Aleksey Kalinichenko 1, Irina Lobanova 1*1, Anna Zaitseva 1, Egor

More information

IMO Polar Code. Industry Seminar: Operational conditions for ships on the NSR Busan. Håvard Nyseth 30 May 2016 MARITIME. Ungraded

IMO Polar Code. Industry Seminar: Operational conditions for ships on the NSR Busan. Håvard Nyseth 30 May 2016 MARITIME. Ungraded MARITIME IMO Polar Code Industry Seminar: Operational conditions for ships on the NSR Busan Håvard Nyseth 1 SAFER, SMARTER, GREENER Content 1. Background 2. IMO Polar Code General Introduction Part I-A

More information

Proceedings of the ASME th International Conference on Ocean, Offshore and Arctic Engineering OMAE2011

Proceedings of the ASME th International Conference on Ocean, Offshore and Arctic Engineering OMAE2011 Proceedings of the ASME 2011 30th International Conference on Ocean, Offshore and Arctic Engineering OMAE2011 June 19-24, 2011, Rotterdam, The Netherlands Proceedings of the ASME 2011 30th International

More information

Rotary vane steering gear for smaller vessels

Rotary vane steering gear for smaller vessels Steering gear Rotary vane steering gear for smaller vessels The SR series is designed with integrated frequency controlled pumps. General description Rolls-Royce supplies a complete range of steering gear,

More information

Sea Ice Characteristics and Operational Conditions for Ships Working in the Western Zone of the NSR

Sea Ice Characteristics and Operational Conditions for Ships Working in the Western Zone of the NSR The Arctic 2030 Project: Feasibility and Reliability of Shipping on the Northern Sea Route and Modeling of an Arctic Marine Transportation & Logistics System 3-rd. Industry Seminar: Sea-Ice & Operational

More information

Reliability Analysis Including External Failures for Low Demand Marine Systems

Reliability Analysis Including External Failures for Low Demand Marine Systems Reliability Analysis Including External Failures for Low Demand Marine Systems KIM HyungJu a*, HAUGEN Stein a, and UTNE Ingrid Bouwer b a Department of Production and Quality Engineering NTNU, Trondheim,

More information

Level and pressure instrumentation for the offshore industry

Level and pressure instrumentation for the offshore industry Level and pressure instrumentation for the offshore industry Anwendungsbeispiele Application examples and und products Produkte Measurement technology for offshore applications This brochure presents examples

More information

Best Practice for Calibrating LTH Conductivity Instruments

Best Practice for Calibrating LTH Conductivity Instruments Application Note Best Practice for Calibrating LTH Conductivity Instruments As accurate process measurement becomes an everyday requirement it is vital to be able to calibrate conductivity instruments

More information

To be used as a coating for potable water tanks and pipes. Independently tested and certified for potable water storage. Other

To be used as a coating for potable water tanks and pipes. Independently tested and certified for potable water storage. Other Approved 9440;9441 1,2 9440 epoxy ^(ValidationDate) 1 Product description This is a two component solvent free amine cured epoxy coating. It is specially designed for drinking water tanks. Can be used

More information

Sloshing analysis of LNG membrane tanks

Sloshing analysis of LNG membrane tanks CLASS GUIDELINE DNVGL-CG-0158 Edition February 2016 The electronic pdf version of this document, available free of charge from http://www.dnvgl.com, is the officially binding version. FOREWORD DNV GL class

More information

Voith Water Tractor Improved Manoeuvrability and Seakeeping Behaviour

Voith Water Tractor Improved Manoeuvrability and Seakeeping Behaviour Amsterdam, The Netherlands Organised by the ABR Company Ltd Day Paper No. 2 9 Voith Water Tractor Improved Manoeuvrability and Seakeeping Behaviour Dr Dirk Jürgens and Michael Palm, Voith Turbo Schneider

More information

With a team of highly qualified divers Vision offers a wide range of services including;

With a team of highly qualified divers Vision offers a wide range of services including; Commercial Diving Services With a team of highly qualified divers Vision offers a wide range of services including; Civils Diving Services Inspections, Construction and maintenance on bridges, piles, quay

More information

High Temperature Resistant Rope

High Temperature Resistant Rope Conference paper sponsored by Day 3 Paper No. 7 BARCELONA, SPAIN Organised by the ABR Company Ltd High Temperature Resistant Rope Danielle Stenvers (speaker/co-author), Rafael Chou (co-author), Samson,

More information

MARITIME PROTECTION NITROGEN SYSTEM

MARITIME PROTECTION NITROGEN SYSTEM MARITIME PROTECTION NITROGEN SYSTEM WHEN SIZE AND RELIABILITY MATTERS Survitec is proud to present the re-engineered Maritime Protection nitrogen system, fi rst introduced in 1984. NITROGEN SYSTEMS are

More information

Epoxy Curing Agents and Modifiers

Epoxy Curing Agents and Modifiers Epoxy Curing Agents and Modifiers Epodil LV5 Diluent Technical Data Sheet Description V5 diluent is a chemically inert, low viscosity liquid hydrocarbon resin. It is soluble in and compatible with a wide

More information

ROYAL CANADIAN SEA CADETS PHASE ONE INSTRUCTIONAL GUIDE SECTION 5 EO C IDENTIFY TYPES OF CIVILIAN VESSELS PREPARATION

ROYAL CANADIAN SEA CADETS PHASE ONE INSTRUCTIONAL GUIDE SECTION 5 EO C IDENTIFY TYPES OF CIVILIAN VESSELS PREPARATION ROYAL CANADIAN SEA CADETS PHASE ONE INSTRUCTIONAL GUIDE SECTION 5 EO C120.02 IDENTIFY TYPES OF CIVILIAN VESSELS Total Time: 30 min PREPARATION PRE-LESSON INSTRUCTIONS A complete list of resources needed

More information

Technical Data Megacote

Technical Data Megacote Technical Data Megacote Product description Megacote is a fast-curing abrasion resistant high solids two-component epoxy anticorrosive coating that will bond to a wide variety of substrates. Recommended

More information

Energy Systems and Growth

Energy Systems and Growth Energy Systems and Growth Understanding Energy Systems and Growth Understanding how your body produces energy is vital to understanding why you train in certain ways to enhance your energy systems and

More information

The Usage of Propeller Tunnels For Higher Efficiency and Lower Vibration. M. Burak Şamşul

The Usage of Propeller Tunnels For Higher Efficiency and Lower Vibration. M. Burak Şamşul The Usage of Propeller Tunnels For Higher Efficiency and Lower Vibration M. Burak Şamşul ITU AYOC 2014 - Milper Pervane Teknolojileri Company Profile MILPER is established in 2011 as a Research and Development

More information

Specially designed for maintenance and repair of dedicated water ballast tanks on vessels and offshore structures. Other

Specially designed for maintenance and repair of dedicated water ballast tanks on vessels and offshore structures. Other Approved 385;386;799 1,2 385 epoxy mastic ^(ValidationDate) 1 Product description This is a two component polyamine cured epoxy mastic coating. It is a surface tolerant, high solids, high build product.

More information

NEWS. Number 187. The benefits of underwater cleaning on Ecospeed... 3 Unique range of underwater cleaning equipment... 6

NEWS. Number 187. The benefits of underwater cleaning on Ecospeed... 3 Unique range of underwater cleaning equipment... 6 NEWS Number 187 L E T T E R The benefits of underwater cleaning on Ecospeed... 3 Unique range of underwater cleaning equipment... 6 The only coating that offers lasting rudder protection Supreme Rudder

More information

Shipbuilding technologies. EPOCAST epoxy chocking and paste systems Devcon CELLOFLEX-M shaft coating system

Shipbuilding technologies. EPOCAST epoxy chocking and paste systems Devcon CELLOFLEX-M shaft coating system Shipbuilding technologies EPOCAST epoxy chocking and paste systems Devcon CELLOFLEX-M shaft coating system ITW Polymers Europe GmbH Long lasting and proven solutions... State of the art technology combined

More information

Underwater Blanking Tools

Underwater Blanking Tools Underwater Blanking Underwater Blanking Tools Miko Marine has been in the business of underwater blanking since 1997. Miko offers class-qualified tools for the temporary sealing of openings below the waterline,

More information

Acetylene. Gone all out for a classic

Acetylene. Gone all out for a classic Acetylene Gone all out for a classic Acetylene a constancy in oxyfuel technology Multitalent Acetylene has been regarded as "the" fuel gas for autogenous technology for more than 80 years now really a

More information

The model of thermal response of Liquefied Petroleum Gas Tanks subjected to accidental heat input

The model of thermal response of Liquefied Petroleum Gas Tanks subjected to accidental heat input Economic Commission for Europe Inland Transport Committee Working Party on the Transport of Dangerous Goods Joint Meeting of the RID Committee of Experts and the Working Party on the Transport of Dangerous

More information

PAC33 Polyurethane Primer. Mix Ratio (by volume) 4355/3600 (Base) 5 parts 0701/9000 (Activator) 1 part 0433/9000 (Thinner) 4-5 parts

PAC33 Polyurethane Primer. Mix Ratio (by volume) 4355/3600 (Base) 5 parts 0701/9000 (Activator) 1 part 0433/9000 (Thinner) 4-5 parts TECHNICAL DATA SHEET Product Description is a two component, corrosion inhibitive, polyurethane primer modified with epoxy resin. is designed for use with aerospace paint systems. Excellent corrosion resistance

More information

Dissolved Oxygen and measurement possibilities. Berno Lüpkes, 15 th March 2017

Dissolved Oxygen and measurement possibilities. Berno Lüpkes, 15 th March 2017 Dissolved Oxygen and measurement possibilities Berno Lüpkes, 15 th March 2017 Content 1. Introduction to Dissolved Oxygen 2. Amperometric measurement principle 3. Optical measurement principle 4. Optical

More information

INNOVATIVE MOORING SYSTEMS

INNOVATIVE MOORING SYSTEMS INNOVATIVE MOORING SYSTEMS VESSEL AUTOMOORING MODULES QUAY AUTOMOORING INSTALLATIONS DOCKLOCK brings mooring to a next level PAGE 2 FOR OVER A CENTURY THE WORLD S LEADING EXPERT IN MOORING, BERTHING AND

More information

Acetylene. Gone all out for a classic

Acetylene. Gone all out for a classic Acetylene Gone all out for a classic Acetylene a constancy in oxyfuel technology Multitalent Acetylene has been regarded as "the" fuel gas for autogenous technology for more than 80 years now really a

More information

ZIN Technologies PHi Engineering Support. PHi-RPT CFD Analysis of Large Bubble Mixing. June 26, 2006

ZIN Technologies PHi Engineering Support. PHi-RPT CFD Analysis of Large Bubble Mixing. June 26, 2006 ZIN Technologies PHi Engineering Support PHi-RPT-0002 CFD Analysis of Large Bubble Mixing Proprietary ZIN Technologies, Inc. For nearly five decades, ZIN Technologies has provided integrated products and

More information

Underwater Blanking Tools. Miko Plaster. Tanker Kit. Sea Chest Blanking. Pipe Plugs

Underwater Blanking Tools. Miko Plaster. Tanker Kit. Sea Chest Blanking. Pipe Plugs Underwater Blanking Underwater Blanking Tools Miko Marine has been in the business of underwater blanking since 1997. Miko offers class-qualified tools for the temporary sealing of openings below the waterline,

More information

Development of Design Support System for Safety Assessment of Ship under Damage Conditions

Development of Design Support System for Safety Assessment of Ship under Damage Conditions Development of Design Support System for Safety Assessment of Ship under Damage Conditions Soon-Sup Lee, Dongkon Lee, Ki-Sup Kim and Beom-Jin, Park, Hee-Jin Kang, Jin Choi Maritime & Ocean Engineering

More information

Comparison of Sealing Methods for FDM Materials

Comparison of Sealing Methods for FDM Materials TECHNICAL APPLICATION GUIDE Comparison of Sealing Methods for FDM Materials There are many methods, and even more materials, for sealing FDM parts. To assist in selecting the best approach, Stratasys,

More information