News | EQUIPMENT
Anciliary equipment Pipe purging advances
made UK-based based Huntingdon Fusion Techniques (HFT) has introduced its latest PurgElite series of tube and pipe purging systems, suitable for pipes with diameters from 2.5cm (1in) to 30.48cm (12in), designed to offer various cost and efficiency benefits. According to the company this particular range is especially suitable for the stainless steel, duplex steel and nickel alloys that are being used in ships’ piping systems today. Te new series offers a number of advantages over
previous weld purging systems, HFT claims. A key feature is the development of a low profile purge gas release valve, required to purge the chamber between the two dams once they are inflated. Te previous, more expensive high profile valve has been eliminated, significantly cutting manufacturing costs, and also reducing the minimum sizes of tube and pipe that can be welded, from 5.08cm (2in) down to 2.54cm (1in) diameter. The new valve further opens up the possibility of purging pipes locally rather than having to fill complete systems with large amounts of expensive inert gas. HFT has also has selected lower vapour pressure
materials to ensure that the outgassing rate into the weld zone will be minimised to protect the molten weld pool from oxidation and subsequent problems arising. In addition, a synthetic hose has been developed that can withstand temperatures up to 700ºC and replaces the metal braided hose and its fittings that were used previously.
www.huntingdonfusion.com
Six of the nine sizes available in the new PurgeElite range for the shipbuilding and repair industries.
Coastings Hempel tanker coatings
meet IMO standards Hempel protective coating systems, including the Hempadur range, have passed the laboratory tests required by the IMO’s performance standard for protective coatings for cargo oil tanks (PSPC/COT). Te tests ensure that coatings for cargo oil tanks in crude oil tankers comply with the specifications of the IMO MSC.288(87) SOLAS regulations. Te performance standard requires approved coatings to remain in “Good” condition for a period of 15 years from initial application. Testing was performed by COT bv in Te Nether-
lands, an independent laboratory accredited to carry out
tests in accordance with MSC.288(87). The
coatings were applied on panels and subjected to a 90-day gas-tight chamber test, which simulated the cargo tank environment in loaded and unloaded condition, as well as a 180 day immersion test, which simulated conditions in a loaded crude oil tank. Te test panels were then examined for blisters, rust and other defects. Hempel says that, with the Type Approval
Certificates in place before the IMO PSPC/COT regulation comes into force, shipyards and owners can now rely on the approved Hempel products to meet the PSPC coatings requirements for cargo oil tanks.
www.hempel.com
Green technology Sembawang invests in
Ecospec technology Singapore’s Sembawang Shipyard has taken a 20% equity stake in local firm Ecospec Global Technology, in order to jointly develop products and systems which are in demand due to environment- related regulatory initiatives. Ecospec has developed a range of emission
abatement, water treatment, corrosion control and other systems, which will have a retrofit as well as a newbuild application. Te company has several patents to its name, including CSNOx, which is capable of removing sulphur dioxide (SO2 oxides (NOx) and carbon dioxide (CO2
), nitrogen ) in one
system; BioMag, a bio-fouling control system; ElMag, a corrosion control system; and ScaMag, an ultra-low frequency electronic boiler water treatment system. Over the past year Sembawang Shipyard and
Ecospec Technology have cooperated closely on the development of a new generation emission
16 Shiprepair and Conversion Technology 2nd Quarter 2012
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