BS EN ISO 16663-1-2009 Fishing nets Method of test for the determination of mesh size - Opening of mesh《渔网 测定筛孔尺寸的试验方法 筛孔的开口》.pdf

1、BS EN ISO16663-1:2009ICS 65.150NO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGHT LAWBRITISH STANDARDFishing nets Method of test for thedetermination of meshsizePart 1: Opening of mesh (ISO16663-1:2009)This British Standardwas published under theauthority of the StandardsPolicy and S

2、trategyCommittee on 30 April2009. BSI 2009ISBN 978 0 580 58415 2Amendments/corrigenda issued since publicationDate CommentsBS EN ISO 16663-1:2009National forewordThis British Standard is the UK implementation of EN ISO16663-1:2009. It is identical to ISO 16663-1:200 . It supersedes BS ENISO 16663-1:

3、2003 which is withdrawn.The UK participation in its preparation was entrusted to TechnicalCommittee TCI/77, Ropes and cordage and fishing nets.A list of organizations represented on this committee can be obtained onrequest to its secretary.This publication does not purport to include all the necessa

4、ry provisionsof a contract. Users are responsible for its correct application.Compliance with a British Standard cannot confer immunityfrom legal obligations.9EUROPEAN STANDARDNORME EUROPENNEEUROPISCHE NORMEN ISO 16663-1March 2009ICS 65.150 Supersedes EN ISO 16663-1:2003 English VersionFishing nets

5、- Method of test for the determination of mesh size -Part 1: Opening of mesh (ISO 16663-1:2009)Filets de pche - Mthode dessai pour la dterminationdes dimensions de la maille - Partie 1: Ouverture de maille(ISO 16663-1:2009)Fischnetze - Prfverfahren zur Bestimmung derMaschenweite - Teil 1: Maschenffn

6、ung (ISO 16663-1:2009)This European Standard was approved by CEN on 28 February 2009.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 an

7、d bibliographical references concerning such nationalstandards may be obtained on application to the CEN 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 responsibil

8、ity of a CEN member into its own language and notified to the CEN Management Centre has the same status as theofficial versions.CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Cyprus, Czech Republic, Denmark, Estonia, Finland,France, Germany, Greece, Hungary, Iceland, Ir

9、eland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal,Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom.EUROPEAN COMMITTEE FOR STANDARDIZATIONCOMIT EUROPEN DE NORMALISATIONEUROPISCHES KOMITEE FR NORMUNGManagement Centre: Avenue Marnix 17,

10、B-1000 Brussels 2009 CEN All rights of exploitation in any form and by any means reservedworldwide for CEN national Members.Ref. No. EN ISO 16663-1:2009: EBS EN ISO 16663-1:2009EN ISO 16663-1:2009 (E) 3 Foreword This document (EN ISO 16663-1:2009) has been prepared by Technical Committee ISO/TC 38 “

11、Textiles“ in collaboration with Technical Committee CEN/TC 248 “Textiles and textile products“, the secretariat of which is held by BSI. This European Standard shall be given the status of a national standard, either by publication of an identical text or by endorsement, at the latest by September 2

12、009, and conflicting national standards shall be withdrawn at the latest by September 2009. Attention is drawn to the possibility that some of the elements of this document may be the subject of patent rights. CEN and/or CENELEC shall not be held responsible for identifying any or all such patent ri

13、ghts. This document supersedes EN ISO 16663-1:2003. According to the CEN/CENELEC Internal Regulations, the national standards organizations of the following countries are bound to implement this European Standard: Austria, Belgium, Bulgaria, Cyprus, Czech Republic, Denmark, Estonia, Finland, France,

14、 Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and the United Kingdom. Endorsement notice The text of ISO 16663-1:2009 has been approved by CEN as a EN ISO 16663-

15、1:2009 without any modification. BS EN ISO 16663-1:2009ISO 16663-1:2009(E) ISO 2009 All rights reserved iiiContents Page Foreword iv 1 Scope . 1 2 Normative references . 1 3 Terms and definitions. 1 4 Principle. 2 5 Apparatus 2 6 Measurement force. 4 7 Calibration . 4 8 Verification of length and fo

16、rce measurement 4 9 Requirements for testing . 5 10 Procedure 6 11 Calculation and expression of results 7 12 Test report . 8 BS EN ISO 16663-1:2009ISO 16663-1:2009(E) iv ISO 2009 All rights reservedForeword ISO (the International Organization for Standardization) is a worldwide federation of nation

17、al standards bodies (ISO member bodies). The work of preparing International Standards is normally carried out through ISO technical committees. Each member body interested in a subject for which a technical committee has been established has the right to be represented on that committee. Internatio

18、nal organizations, governmental and non-governmental, in liaison with ISO, also take part in the work. ISO collaborates closely with the International Electrotechnical Commission (IEC) on all matters of electrotechnical standardization. International Standards are drafted in accordance with the rule

19、s given in the ISO/IEC Directives, Part 2. The main task of technical committees is to prepare International Standards. Draft International Standards adopted by the technical committees are circulated to the member bodies for voting. Publication as an International Standard requires approval by at l

20、east 75 % of the member bodies casting a vote. Attention is drawn to the possibility that some of the elements of this document may be the subject of patent rights. ISO shall not be held responsible for identifying any or all such patent rights. ISO 16663-1 was prepared by Technical Committee ISO/TC

21、 38, Textiles. This second edition cancels and replaces the first edition (ISO 16663-1:2003), which has been technically revised. ISO 16663 consists of the following parts, under the general title Fishing nets Method of test for the determination of mesh size: Part 1: Opening of mesh Part 2: Length

22、of mesh BS EN ISO 16663-1:2009INTERNATIONAL STANDARD ISO 16663-1:2009(E) ISO 2009 All rights reserved 1Fishing nets Method of test for the determination of mesh size Part 1: Opening of mesh 1 Scope This part of ISO 16663 specifies a method for the determination of the size of the mesh opening of fis

23、hing nets, using an objective mesh gauge. It is applicable to active and passive fishing gear. 2 Normative references The following referenced documents are indispensable for the application of this document. For dated references, only the edition cited applies. For undated references, the latest ed

24、ition of the referenced document (including any amendments) applies. ISO 139, Textiles Standard atmospheres for conditioning and testing ISO 1107, Fishing nets Netting Basic terms and definitions IEC 60529, Degrees of protection provided by enclosures (IP Code) 3 Terms and definitions For the purpos

25、es of this document, the following terms and definitions apply. 3.1 active fishing gear fishing gear requiring movement to catch the fish NOTE In general, mobile fishing equipment (i.e. equipment which is mobile relative to the sea bed or to the water) is led into the path of the fish to pursue and

26、catch them. All trawls, dredges, seine nets, purse seines and other surrounding nets are examples of active gear. 3.2 trawl towed net consisting of a cone-shaped body closed at the rear by a bag or cod end and widened at the opening by wings NOTE A trawl may be towed by one or two boats and, dependi

27、ng on the type, is used on the bottom or as a midwater (pelagic) trawl. 3.3 Danish seine funnel-shaped net (with wings and cod end) with very long ropes laid out on the sea bed and hauled in to a vessel in the open sea BS EN ISO 16663-1:2009ISO 16663-1:2009(E) 2 ISO 2009 All rights reserved3.4 purse

28、 seine large single-panel multisection net used to encircle pelagic fish, the bottom of the net being drawn together to enclose the encircled fish 3.5 passive fishing gear fishing gear requiring movement of the fish in order for the fish to be caught NOTE This gear is usually stationary equipment, o

29、ften, but not always, anchored on the sea bed. Gill nets and entangling nets are examples of passive gear. 3.6 gill net panel of netting, usually of rectangular shape, made of thin twine or monofilament yarn, in the meshes of which the fish are caught NOTE The net is suspended vertically in the wate

30、r by floats and sinkers. 3.7 entangling net loosely hung vertical net that catches fish by entangling rather than enmeshing them 3.8 trammel net bottom-set net which is made up of of three walls of netting, the two tightly hung outer walls having a larger mesh size than the inner wall which is loose

31、ly hung between them NOTE The fish pass through one of the outer walls and become entangled in the small meshes of the inner wall, after which they push themselves into the second outer wall, thus forming a bag. 4 Principle An objective mesh gauge is inserted into the mesh opening. The mesh is stret

32、ched by a movable jaw until a pre-set measurement force is reached. The size of the mesh opening is then measured automatically. 5 Apparatus 5.1 Objective mesh gauge, complying with the requirements of 5.1.1 to 5.1.6. 5.1.1 The objective mesh gauge used for determining mesh openings shall be automat

33、ic and electrically driven (see Figure 1). The gauge shall be able to apply selected longitudinal measuring forces, in the range 5 N to 180 N, to the meshes with a precision of 1 N. Fixed measuring forces of 10 N, 20 N, 50 N and 125 N shall be provided. A built-in system for measuring the applied fo

34、rce is needed. The gauge shall have two jaws, one fixed and one movable, each 2 mm thick with rounded edges with a radius of 1 mm, to ensure that the jaws slip easily over the twine or yarn. A mesh shall be stretched at a constant speed of (300 30) mm/min by the movable jaw. The gauge shall be able

35、to measure meshes from 10 mm to 300 mm and may have different, detachable, jaws for use on small and large meshes. The measurement precision shall be 1 mm. 5.1.2 The structure of the gauge shall be rigid and shall not distort under load. The body shall be light yet robust and shall weigh no more tha

36、n 2,5 kg. The gauge shall be made of materials resistant to corrosion under marine conditions. It shall be water-resistant, be unaffected by dust to rating IP 56 as specified in IEC 60529, and be stable in operation over the temperature range 10 C to + 40 C. The gauge shall be able to withstand temp

37、eratures between 25 C and + 65 C during storage and transportation. BS EN ISO 16663-1:2009ISO 16663-1:2009(E) ISO 2009 All rights reserved 35.1.3 Gauge operation shall be controlled by software that provides a menu of functions. It shall be possible to operate the gauge with one hand and the functio

38、ns shall be accessible via external buttons. Data shall be shown on an integral display able to present each measurement, the number of measurements made in a series and the mean value. A store shall be provided capable of holding at least 1 000 measurements and it shall be possible to transmit data

39、 to a computer. 5.1.4 The software menu shall contain a suitable function to calculate the mean mesh opening, rounded to the nearest 0,1 mm. For so-called “square” meshes, the software shall contain a suitable function to select automatically the longer diagonal of each mesh to calculate the mean me

40、sh opening of the square mesh netting. To allow verification of the selection procedure, the data saved shall include all the measurements made. 5.1.5 The software shall permit automatic self-testing of the electronic and mechanical parts when the gauge is started. If the gauge is ready for use, thi

41、s shall be shown on the display. If this is not the case, the display shall show an error message and the gauge shall close down and not be usable. 5.1.6 Some netting will creep under load. The gauge shall respond to this condition by re-applying the pre-set measurement force in accordance with an a

42、lgorithm in the controlling software which causes the gauge to a) extend the movable jaw into the mesh at a constant speed of (300 30) mm/min until the pre-set measurement force is reached; b) stop the motor and wait 1 s; c) if the force drops below 80 % of the measurement force, extend the jaw into

43、 the mesh until the measurement force is reached once more. Figure 1 Example of an objective mesh gauge 5.2 Equipment for producing and maintaining the standard atmosphere for testing. 5.3 Equipment in which samples can be immersed in water preparatory to wet testing. BS EN ISO 16663-1:2009ISO 16663

44、-1:2009(E) 4 ISO 2009 All rights reserved6 Measurement force For the netting of active fishing gear, use: 20 N for meshes 35 mm; 50 N for meshes W 35 mm but 55 mm; 125 N for meshes W 55 mm. For the netting of passive fishing gear, use 10 N for all mesh sizes. 7 Calibration The objective mesh gauge s

45、hall be calibrated once a year by an authorized calibration institute. 8 Verification of length and force measurement 8.1 Verification of length measurement Verification of the length measurement shall be performed at intervals by inserting the jaws of the gauge into slots of different lengths in a

46、calibrated rigid test plate. An example of such a test plate is shown in Figure 2. Figure 2 Test plate BS EN ISO 16663-1:2009ISO 16663-1:2009(E) ISO 2009 All rights reserved 58.2 Verification of force measurement Verification of the force measurement shall be performed at intervals by hanging calibr

47、ated weights on the fixed jaw, with the gauge securely held vertically, as shown in Figure 3. The weights shall have the following values: 10 N, 20 N, 50 N and 125 N. Calibration shall only be carried out under stable conditions. Key 1 test weight Figure 3 Force measurement verification 9 Requiremen

48、ts for testing 9.1 General Tests may be carried out in both the dry and wet states, but tests in the wet state are considered to be particularly appropriate in indicating the behaviour of the netting in use. 9.2 Atmosphere for testing All specimens to be tested in the dry state shall be conditioned

49、in the standard atmosphere specified in ISO 139 until they have reached equilibrium. Where it is not possible to carry out the test in the standard atmosphere, the test shall be carried out immediately after removal of the specimen from the standard atmosphere. BS EN ISO 16663-1:2009ISO 16663-1:2009(E) 6 ISO 2009 All rights reserved9.3 Testing in the wet state Specimens to be tested in the wet state shall be a) either immersed in tap water at (20 2) C for not less than 12 h; b) or immersed in a soluti