Prevention is better than cure

Michael McGlamry, Group Product Manager, Oil and Gas, Hempel
Thursday, March 26, 2020

It is well known that offshore steel structures are subjected to some of the harshest weather conditions and punishing marine environments, so it makes sense to use a good protective coating from the outset to safeguard those structures from corrosion. Often, their isolated locations mean that it can be very costly and time-consuming for asset owners to carry out maintenance work. Therefore, it is vital to get it right first time and select a coating system that has been formulated to meet the exact mechanical, operational and environmental needs of the structure –  ensuring an extended coating lifetime and longer maintenance intervals.
 
Until recently, three-coat systems have been the preferred method of protection but many offshore structures have suffered from early coating failure. This is primarily due to water ingress through the coating system caused by stress induced micro-cracking and/or mechanical damage, leaving asset owners with unsustainable maintenance costs.

At Hempel, the worldwide coatings manufacturer, we strongly believe that prevention is better than cure and following many years of R&D we launched the first ever volumetric water repellent topcoat coating - Hempatop Repel 800 – to combat this. This unique product is designed to deliver enhanced protection by actively repelling water from the coated surface. Hempatop Repel 800 also delivers full protection with fewer coating layers meaning that it can be applied faster and is longer lasting than conventional coatings solutions, saving owners time and money.

An exceptional partnership 
For optimum protection, Hempatop Repel 800 is used in combination with Hempel’s ground-breaking patented Avantguard® technology activated zinc primer – Avantguard 770. The innovative Avantguard technology uses a unique combination of zinc dust, hollow glass spheres and a proprietary activator to make the zinc contained within the coating more effective. This combination delivers unrivalled three-in-one advanced corrosion protection.

Manual surface preparation also plays a vital role in maintenance. By using Avantguard 770 as the primer, asset owners benefit from a coating solution that delivers excellent adhesion and reduced rust creep when applied on manually prepared salt-contaminated surfaces. The innovative primer also offers outstanding flexibility, impact and crack resistance not found in conventional zinc rich primers.   

What sets this two-coat system apart is that it requires one coat less than standard protective coatings solutions for offshore installations - and it lasts significantly longer. This simplifies the construction and maintenance processes of offshore assets and reduces costs for owners. It is easily applied with conventional or airless application equipment to deliver further efficiencies to the applicator and owner.

Hempatop Repel 800 is a first of its kind.  And when used in synergy with Hempel’s Avantguard 770 delivers improved flexibility and crack resistance, increased adhesion retention, is significantly longer lasting and, importantly, minimises corrosion. The Hempatop Repel 800 two coat system meets the obligations of even the most stringent of industry test requirements, including ISO 12944:2018 Part 9 for a CX category, and it is prequalified for NORSOK M-501 Ed. 6, System 1, providing peace of mind to asset owners.

Hempatop Repel 800 at a glance:

  • Superior long-lasting corrosion resistance.
  • Easy application and short overcoating interval for increased productivity.
  • Can be applied in a single day reducing the time needed for applicators offshore.
  • Simple and flexible coating system – one coat less than industry standard.
  • Meets all the test requirements of ISO 12944:2018 Part 9 for a CX category.
  • Prequalified for NORSOK M-501 Ed. 6, System 1.
    Excellent water repellent properties reducing water ingress through the topcoat.
  • Proven adhesion retention and mechanical performance.
  • Tested to NACE TM0404 Section 12 (ASTM D5894).
  • Improved mechanical resistance even at high DFTs.

https://www.hempel.com/products/brand/hempatop/explore

Categories: Coatings & Corrosion

Related Stories

One Shelf Drilling Rig Up for New Job in India, Other for Disposal

PTTEP Hires Velesto’s Jack-Up Rig for Drilling Campaign off Malaysia

Yinson Production Secures $1.17B Refinancing for FPSO Maria Quitéria

Centrica and Thailand’s PTT Ink Long-Term LNG Supply Deal

CNOOC Signs Hydrocarbons Exploration and Production Deal with Kazakhstan

Yinson Production, “K” LINE Target Europe's CCS with FSIU and LCO2 Solutions

Wood JV Gets EPC Job for Shell off Brunei

French Oil Major Acquires Interests in Multiple Blocks in Southeast Asia

UK Firm Secures Exploration Extension for Two Blocks off Vietnam

Aker Solutions, PTAS JV Hooks Brownfield Services Extension off Brunei

Current News

One Shelf Drilling Rig Up for New Job in India, Other for Disposal

Four Jack-Up Drilling Rig Deals Set to Bring In $129M for Borr Drilling

PTTEP Hires Velesto’s Jack-Up Rig for Drilling Campaign off Malaysia

Yinson Production Secures $1.17B Refinancing for FPSO Maria Quitéria

Centrica and Thailand’s PTT Ink Long-Term LNG Supply Deal

Petrovietnam, Partners Sign PSC for Block Off Vietnam

Japan Protests China’s New Oil and Gas Construction Activities in East China Sea

CNOOC Signs Hydrocarbons Exploration and Production Deal with Kazakhstan

Thailand's PTT to Buy LNG from Glenfarne's Alaska LNG Project

Woodside and Jera Agree LNG Cargoes Supply for Japan’s Winter Period

Subscribe for AOG Digital E‑News

AOG Digital E-News is the subsea industry's largest circulation and most authoritative ENews Service, delivered to your Email three times per week

https://accounts.newwavemedia.com