Feature 8 | FINLAND
Upgrade improves oil recovery efficiency levels
Te oil recovery vessel (ORV) Halli was modernised last year to meet environmental challenges in the Gulf of Finland.
T
he overall volume of maritime traffic in the Gulf of Finland, but especially oil transportation, is
growing and at the same time the general awareness of the dangers of a possible oil spill is increasing. Te Finnish government has drawn up a plan of readiness for dealing with large scale oil accidents at sea and this process demonstrated that more oil recovery capacity was needed in the region. Tis goal will be achieved in two ways -
by building new oil recovery vessels (ORVs) and also by modernising old ones. The Finnish government has an existing fleet of 15 ORVs and the largest of these, ORV Halli, was upgraded last year in a project, involving STX Finland and the Finnish Environment Institute, the designated marine pollution response authority in Finland, which was funded by the Ministry of the Environment. Project management was undertaken by staff within the Marine Pollution Response Section of the Finnish Environment Institute. ORV Halli has been operated by the
Finnish Navy since 1987 and the necessary design and inspection work was carried out together by the Navy and the Finnish Environment Institute with the help of consulting naval architects. An invitation to tender was issued in May 2009 and the contract with STX Finland was signed in July the same year. STX Helsinki has a covered drydock
and it was determined that this would be the perfect place to carry out this work in
TECHNICAL PARTICULARS Halli
Length oa ............................................61.5m Breadth ................................................12.4m Draft .......................................................4.0m Displacement ....................................2203m3 Oil sweeping width ................................40m Recovery oil tank Capacity ...........................................1400m3
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The modernised Halli undergoing trials which demonstrated a wider oil sweeping capacity than before (photo: Mika Koutu).
Before Light weight [t] Longitudinal Centre of Gravity Transverse Centre of Gravity Vertical Centre of Gravity 1270 23.7 -0.04 5.23
After 1328 22.85 0.03 5.71
Finland during the winter time. Te oil spill response ship, which belongs to the Navy, was repaired and much of its equipment modernised during an eight month stay in the yard. Te modernisation of Halli, aimed to add 20 years to the vessel’s life span, has improved operational efficiency and safety and made the ship more environment- friendly. New booms boosting oil collection capabilities were added, while new detection and navigation equipment enhanced the
vessel’s ability to operate under demanding navigational conditions. ORV Halli is a multi-purpose ship and
besides serving as an oil recovery vessel, it is used as a supply vessel for diving operations, fuel transport, and other activities. It is also a man-of-war. All this had to be taken into consideration when the scope of the modernisation work was defined. During this project the ship’s electrical systems (including auxiliary machinery
Shiprepair and Conversion Technology 1st Quarter 2011
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