Equipment
requires one coat only – compared to two coats in today’s industry-standard upgrade solution. Hempel estimates that the one-coat Nexus X-Seal
solution can save shipping companies up to 5% in drydocking expenses when applying a fouling release coating on top of an existing anti-fouling coating. According to Marie Bakholdt Andersen, group
product manager at Hempel, this can have a significant impact on a shipping company’s bottom line. Andersen said: “By reducing the amount of coatings required to link the old antifouling to Hempasil X3, we’ve created a very attractive product for shipping companies. It means they can switch to Hempasil X3 – and reap its recognised fuel-saving benefits – with a much cheaper procedure than previously possible.” Also, Hempel estimates that Nexus X-Seal can save
shipping companies up to US$400,000 in surface preparation, application expenses, dock rent and vessel inactivity compared to a solution which requires fully blasting the hull and applying the X3 system from scratch. Tis estimate is based on a vessel with a 15,000m2 hull and a daily hire rate of US$85,000. Andersen said: “Nexus X-Seal will revolutionise
current industry standards. We’ve removed the cost and time barriers that previously stopped many shipping companies from converting to fouling release coatings – and I’m sure that even more companies will now opt for reduced fuel bills and lower CO2
emissions with
Hempasil X3.” Nexus X-Seal was launched worldwide in June 2010.
Injection valves Emerson launches
new subsea valve Emerson Process Management has released its Roxar subsea Chemical Injection Valve (High Flow), a compact and robust retrievable solution that provides total control over the injection of hydrate inhibitors in oil and gas operations. Te launch comes at a time when oil and gas operators
are facing increased threats to their activities from hydrates – crystals formed in high-pressure and low-temperature gas flows – which can block pipelines and interfere with production. Te Roxar subsea Chemical Injection valve provides operators with precise control over the flow and chemical dosage rates of hydrate inhibitors, such as monoethylene gycol (MEG), which is added to the gas flow at the well heads to prevent such hydrates. Te Roxar subsea Chemical Injection valve comes with
a number of key benefits, such as robustness, precision and flexibility. Te Roxar subsea Chemical Injection valve is built to last with carefully selected and tested materials (high-grade alloys and ceramics), providing high-level contamination tolerance and erosion resistance in hostile
Offshore Marine Technology 3rd Quarter 2010
operating conditions. Te injection valve can operate at pressures of up to 10,000psi and depths of 3000m. In addition, the injection valve is qualified to operate
within a contaminating fluid environment, such as sand particles, without any need for subsea filtration. Te valve also has no moving parts, except when adjusting flow rates, resulting in a longer lifecycle and increasing reliability in operations. In the unlikely event of the valve failing, it can be retrieved by a remotely operated underwater vehicle (ROV) without requiring special tools, and will also stay in position and continue to provide a constant injection rate. Tis gives the operator crucial time to prepare for interventions without interrupting production. The injection valve has no choke points which can lead to clogging. Te Roxar subsea Chemical Injection valve comes
with exceptional measurement capabilities. It provides a wide adjustable flow range and generates continuous and accurate measurements of injection rates, no matter what the operating conditions and irrespective of changes in pressure. An optional turbine meter also provides increased measurement accuracy. Te flow measurement accuracy at constant viscosity
and temperature is better than +/- 5% and better than +/- 1% with the turbine meter version. Finally, the Roxar subsea Chemical Injection valve
provides maximum flexibility to the operator. It is lightweight (less than 60kg in water and 150kg in total weight), has low power consumption and uses standard communication protocols, making it ideal for EPC companies looking for a flexible, low maintenance solution that can help reduce weight on their subsea structures.
Insulation Rockwool releases
acoustic foil Rockwool Marine & Offshore has launched a new product – Rockwool Marine Acoustic Foil – part of a sound absorption system specifically designed for enginerooms, cargo pump rooms and similar applications. Traditional insulation solutions which consist of an
aluminium foil or steel plate finish provide a good solution for fire protection and oil contamination prevention; however, these surface materials reduce the otherwise excellent noise absorption properties of the insulation behind them. Providing fire protection and noise reduction in
areas where mechanical strength and resistance to oil contamination is required has therefore always been a challenge, but now Rockwool has developed a system which fulfils all these requirements. By using the Rockwool Marine Acoustic Foil system, the noise absorption of the Rockwool insulation is not affected.
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