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BS ISO 21072-2:2020 pdf free

BS ISO 21072-2:2020 pdf free.Ships and marine technology – Marine environment protection: performance testing of oil skimmers
This document specifies a methodology for establishing quantitative performance data for oil skimmers for recovery of oil with light and medium viscosity (up to 50 000 cP), so the end user can objectively judge, compare, and evaluate the design and performance of different skimmers. The methodology applies to testing in a basin and requires control of oil properties and oil slick characteristics.
The method is applicable to all types of skimmers provided that the equipment dimensions are within the physical limitations of the test basin. The test procedure provides the full-scale test results for the unit tested, under controlled conditions, and for one or more classes of oil. Attention is drawn to the care required when applying the test results to predict skimmer performance under field conditions.
For dedicated/in-built systems, the test procedures outlined in this document can only be used for the skimming device as such, not for the entire skimming system.
The following documents are referred to in the text in such a way that some or all of their content constitutes requirements of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies.
ISO 16165, Ships and marine technology一Marine environment protection一Vocabulary relating to oil spill response
Throughout testing, there shall be sufficient clearance between the skimmer and the tank walls and any containment device, so as not to restrict oil flow to the skimmer or otherwise impede normal operation of the unit.
Since the necessary clearance varies with oil viscosity and unit recovery rate, adequate oil in-flow to the skimmer shall be demonstrated in each specific case, through oil flow observations or slick thickness measurements. Ensure that the clearance between the tank wall and outer limit of the skimmer is at no point less than 50 % of the greatest width (diameter or equivalent dimension) of the skimmer under test.
In considering the depth of the water on which the oil layer is floating, the skimmer or its oil/water interface shall at all times be able to free-float on the water. The clearance between the unit and the tank floor shall be sufficient to not interfere with normal operations of the skimmer.BS ISO 21072-2 pdf download.

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