BS EN ISO 16663-2-2003 Fishing nets - Method of test for the determination of mesh size - Length of mesh《捕鱼网 网眼尺寸测定的试验方法 网眼长度》.pdf

《BS EN ISO 16663-2-2003 Fishing nets - Method of test for the determination of mesh size - Length of mesh《捕鱼网 网眼尺寸测定的试验方法 网眼长度》.pdf》由会员分享，可在线阅读，更多相关《BS EN ISO 16663-2-2003 Fishing nets - Method of test for the determination of mesh size - Length of mesh《捕鱼网 网眼尺寸测定的试验方法 网眼长度》.pdf（10页珍藏版）》请在麦多课文档分享上搜索。

1、 g49g50g3g38g50g51g60g44g49g42g3g58g44g55g43g50g56g55g3g37g54g44g3g51g40g53g48g44g54g54g44g50g49g3g40g59g38g40g51g55g3g36g54g3g51g40g53g48g44g55g55g40g39g3g37g60g3g38g50g51g60g53g44g42g43g55g3g47g36g58size Part 2: Length of meshThe European Standard EN ISO 16663-2:2003 has the status of a British St

2、andardICS 65.150Fishing nets Method of test for the determination of mesh BRITISH STANDARDBS EN ISO 16663-2:2003Incorporating Corrigendum No. 1BS EN ISO 16663-2:2003This British Standard was published under the authority of the Standards Policy and Strategy Committee on 13 June 2003 BSI 2006ISBN 0 5

3、80 42052 3Cross-referencesThe British Standards which implement international or European publications referred to in this document may be found in the BSI Catalogue under the section entitled “International Standards Correspondence Index”, or by using the “Search” facility of the BSI Electronic Cat

4、alogue or of British Standards Online.This publication does not purport to include all the necessary provisions of a contract. Users are responsible for its correct application. Compliance with a British Standard does not of itself confer immunity from legal obligations.Summary of pagesThis document

5、 comprises a front cover, an inside front cover, the EN ISO title page, pages 2 to 6, an inside back cover and a back cover.The BSI copyright notice displayed in this document indicates when the document was last issued.Amendments issued since publicationAmd. No. Date Comments16427Corrigendum No. 13

6、1 Augst 2006 Changes to 6.1 and 7.1A list of organizations represented on this committee can be obtained on request to its secretary. present to the responsible international/European committee any enquiries on the interpretation, or proposals for change, and keep UK interests informed; monitor rela

7、ted international and European developments and promulgate them in the UK.National forewordThis British Standard is the official English language version of EN ISO 16663-2:2003, including Technical Corrigendum April 2006. It is identical with ISO 16663-2:2003.The UK participation in its preparation

8、was entrusted to Technical Committee TCI/77, Ropes, cordage and fishing nets, which has the responsibility to: aid enquirers to understand the text;EUROPEAN STANDARDNORME EUROPENNEEUROPISCHE NORMEN ISO 16663-2June 2003ICS 65.150 Incorporating Corrigendum April 2006English versionFishing nets - Metho

9、d of test for the determination of mesh size -Part 2: Length of mesh (ISO 16663-2:2003)Filets de pche - Mthode dessai pour la dterminationdes dimensions de la maille - Partie 2: Longueur de maille(ISO 16663-2:2003)Fischnetze - Prfverfahren zur Bestimmung derMaschenweite - Teil 2: Maschenlnge (ISO 16

10、663-2:2003)This European Standard was approved by CEN on 2 January 2003.CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this EuropeanStandard the status of a national standard without any alteration. Up-to-date lists and bibliograph

11、ical references concerning such nationalstandards may be obtained on application to the Management Centre or to any CEN member.This European Standard exists in three official versions (English, French, German). A version in any other language made by translationunder the responsibility of a CEN memb

12、er into its own language and notified to the Management Centre has the same status as the officialversions.CEN members are the national standards bodies of Austria, Belgium, Czech Republic, Denmark, Finland, France, Germany, Greece,Hungary, Iceland, Ireland, Italy, Luxembourg, Malta, Netherlands, No

13、rway, Portugal, Slovakia, Spain, Sweden, Switzerland and UnitedKingdom.EUROPEAN COMMITTEE FOR STANDARDIZATIONCOMIT EUROPEN DE NORMALISATIONEUROPISCHES KOMITEE FR NORMUNGManagement Centre: rue de Stassart, 36 B-1050 Brussels 2003 CEN All rights of exploitation in any form and by any means reservedwor

14、ldwide for CEN national Members.Ref. No. EN ISO 16663-2:2003 EEN ISO 16663-2:2003 (E)2ContentspageForeword. 31 Scope and field of application . 42 Normative references . 43 Terms and definitions. 44 Principle . 55 Requirements for testing 56 Procedure. 57 Calculation and expression of results 58 Tes

15、t report 6EN ISO 16663-2:2003 (E)3ForewordThis document (EN ISO 16663-2:2003) has been prepared by Technical Committee CEN/TC 248 “Textiles andtextile products“, the secretariat of which is held by BSI, in collaboration with Technical Committee ISO/TC 38“Textiles“.This European Standard shall be giv

16、en the status of a national standard, either by publication of an identical text orby endorsement, at the latest by December 2003, and conflicting national standards shall be withdrawn at the latestby December 2003.According to the CEN/CENELEC Internal Regulations, the national standards organizatio

17、ns of the followingcountries are bound to implement this European Standard: Austria, Belgium, Czech Republic, Denmark, Finland,France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Luxembourg, Malta, Netherlands, Norway, Portugal,Slovakia, Spain, Sweden, Switzerland and the United Kingdom.EN IS

18、O 16663-2:2003 (E)41 Scope and field of applicationThis European Standard specifies a method for the determination of mesh length of fishing nets using a ruler. It isapplicable to passive fishing gears.2 Normative referencesThis European Standard incorporates, by dated or undated reference, provisio

19、ns from other publications. Thesenormative references are cited at the appropriate places in the text and the publications are listed hereafter. Fordated references, subsequent amendments to or revisions of any of these publications apply to this EuropeanStandard only when incorporated in it by amen

20、dment or revision. For undated references the latest edition of thepublication referred to applies (including amendments).EN ISO 1107, Fishing nets - Netting - Basic terms and definitions (ISO 1107:2003)ISO 139, Textiles - Standard atmospheres for conditioning and testing3 Terms and definitionsFor t

21、he purposes of this document, the following terms and definitions apply.3.1passive fishing gearfishing gear requiring action of the fish to catch itNOTE Mostly stationary equipment often, but not always, anchored at the seabed. Gill nets and entangling nets areexamples of passive gears.3.2gill netpa

22、nel of netting usually of rectangular shape, made of thin twine, in which fish is caught in the meshes. The net issuspended vertically in the water by floats and weightsNOTE The net is held vertically in the water by floats and weights, e.g. drift net, set gill net.3.3entangling netloosely hung vert

23、ical net that catches fish by entangling rather than enmeshing.3.4trammel netbottom set net which is made with three walls of netting, the two outer walls of larger mesh size than the looselyhung inner netting panelNOTE The fish become entangled in the inner small meshed wall after passing through t

24、he outer wall and push themselvesinto the second outer wall, thus forming a bag.EN ISO 16663-2:2003 (E)54 PrincipleThe netting, in both dry and wet states, is manually straightened in the N-direction. The mesh length is measuredwith a ruler.5 Requirements for testing5.1 Atmosphere for testingAll spe

25、cimens to be tested in the dry state shall be exposed to the standard atmosphere for testing specified in ISO139, until they have reached equilibrium.NOTE For netting of man-made fibres, a period of 24 h exposure is generally sufficient.Where it is not possible to carry out the tests in the standard

26、 atmosphere the tests shall be carried out immediatelyafter removal of the sample from the standard atmosphere.5.2 Testing in the wet stateSpecimens to be tested in the wet state shall either be:a) immersed in tap water of (20 2)C for not less than 12 hours ;b) or immersed in a solution of wetting a

27、gent at a temperature of (20 2)C for not less than 1 hour.6 Procedure6.1 Straighten the netting manually in the N-direction. Using a ruler, measure the distance from the first knotor joint exclusive to the eleventh sequential knot or joint inclusive with an accuracy of 1 mm (as shown in Figure 1).6.

28、2 At least 10 single measurements on each piece of netting shall be carried out, unless otherwise agreedbetween the interested parties.XXXXXXXXXXXFigure 1 Measuring the mesh length7 Calculation and expression of results7.1 Record the mesh length, in millimetres, for each measurement. 7.2 Calculate t

29、he average size of mesh length determined in accordance with clause 6 and rounded up to thenext millimetre.7.3 Calculate the coefficient of variation and the confidence interval.The mesh length is obtained by dividing the measured length by 5. EN ISO 16663-2:2003 (E)68 Test reportThe test report sha

30、ll include the following:a) statement that the tests were performed in accordance with this European Standard;b) date of the test;c) description of the netting including the material and the type of yarn (twisted, or braided), the type of netting(knotted or knotless), the mesh size, the nominal line

31、ar density of the twine as per EN ISO 1107;d) average size of length of the mesh in millimetre;e) number of measurements;f) state of the netting (dry or wet);g) coefficient of variation and the confidence interval;h) any deviation from the specified test procedure.blankBS EN ISOBSI389 Chiswick High

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