BS-EN-61023-1993 IEC-61023-1990.pdf

BRITISH STANDARD BS EN 61023:1993 IEC 1023:1991 Incorporating Amendment No. 1 Marine speed and distance measuring equipment (SDME) Operational and performance requirements Methods of testing and required test results The European Standard EN 61023:1993 has the status of a British Standard UDC 621.396.932.1:621.396.967:656.61.052:629.123.018.76:620.1 Licensed Copy: sheffieldun sheffieldun, na, Mon Nov 13 13:15:57 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS EN 61023:1993 This British Standard, having been prepared under the direction of the Electronic Equipment Standards Policy Committee, was published under the authority of the Board of BSI and comes into effect on 28 February 1991 © BSI 12-1999 The following BSI references relate to the work on this standard: Committee reference EEL/30 Draft for comment 88/33034 DC ISBN 0 580 19332 2 Committees responsible for this British Standard The preparation of this British Standard was entrusted by the Electronic Equipment Standards Policy Committee (EEL/-) to Technical Committee EEL/30, upon which the following bodies were represented: British Marine Equipment Council Civil Aviation Authority EEA (the Electronics and Business Equipment Association) General Council of British Shipping Ministry of Defence Nautical Institute Amendments issued since publication Amd. No.DateComments 8035November 1993 Indicated by a sideline in the margin Licensed Copy: sheffieldun sheffieldun, na, Mon Nov 13 13:15:57 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS EN 61023:1993 © BSI 12-1999i Contents Page Committees responsibleInside front cover National forewordii Foreword2 Text of EN 610233 Publication(s) referred toInside back cover Licensed Copy: sheffieldun sheffieldun, na, Mon Nov 13 13:15:57 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS EN 61023:1993 ii © BSI 12-1999 National foreword This British Standard has been prepared under the direction of the Electronic Equipment Standards Policy Committee. It is identical with IEC 1023:1990 “Marine speed and distance measuring equipment (SDME) Operational and performance requirements Methods of testing and required test results” published by the International Electrotechnical Commission (IEC). In 1993 the European Committee for Electrotechnical Standardization (CENELEC) accepted IEC 1023:1990 as European Standard EN 61023:1993. As a consequence of implementing the European Standard this British Standard is renumbered as BS EN 61023 and any reference to BS 7408 should be read as a reference to BS EN 61023. The Technical Committee has reviewed the provisions of ISO 8728:1987, to which reference is made in the text, and has decided that they are acceptable for use in conjunction with this standard. A British Standard does not purport to include all the necessary provisions of a contract. Users of British Standards are responsible for their correct application. Compliance with a British Standard does not of itself confer immunity from legal obligations. Cross-references International StandardCorresponding British Standard IEC 872:1987BS 6919:1987 Specification for marine automatic radar plotting aids (ARPA) (Identical) IEC 936:1988BS 7168:1989 Specification for shipborne radar (Identical) IEC 945:1989BS 7169:1989 Specification for general requirements for marine navigational equipment (Identical) Summary of pages This document comprises a front cover, an inside front cover, pages i and ii, the EN title page, pages 2 to 8, an inside back cover and a back cover. This standard has been updated (see copyright date) and may have had amendments incorporated. This will be indicated in the amendment table on the inside front cover. Licensed Copy: sheffieldun sheffieldun, na, Mon Nov 13 13:15:57 GMT+00:00 2006, Uncontrolled Copy, (c) BSI EUROPEAN STANDARD NORME EUROPÉENNE EUROPÄISCHE NORM EN 61023 July 1993 UDC 621.396.932.1:621.396.967:656.61.052:629.123.018.76:620.1Supersedes HD 600 S1:1992 Descriptors: Ship, navigational instruments, SDME, performance requirements, operational requirements, methods of testing, required test results English version Marine speed and distance measuring equipment (SDME) Operational and performance requirements Methods of testing and required test results (IEC 1023:1990) Instruments de mesure de la vitesse et de la distance pour navires (lochs) Prescriptions techniques et opérationnelles Méthodes dessai et résultats exigibles (CEI 1023:1990) Fahrtmeßanlagen für die Seeschiffahrt Technische und betriebstechnische Anforderungen Prüfverfahren und geforderte Prüfergebnisse (IEC 1023:1990) This European Standard was approved by CENELEC on 1993-07-06. CENELEC members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this European Standard the status of a national standard without any alteration. Up-to-date lists and bibliographical references concerning such national standards may be obtained on application to the Central Secretariat or to any CENELEC member. This European Standard exists in three official versions (English, French, German). A version in any other language made by translation under the responsibility of a CENELEC member into its own language and notified to the Central Secretariat has the same status as the official versions. CENELEC members are the national electrotechnical committees of Austria, Belgium, Denmark, Finland, France, Germany, Greece, Iceland, Ireland, Italy, Luxembourg, Netherlands, Norway, Portugal, Spain, Sweden, Switzerland and United Kingdom. CENELEC European Committee for Electrotechnical Standardization Comité Européen de Normalisation Electrotechnique Europäisches Komitee für Elektrotechnische Normung Central Secretariat: rue de Stassart 35, B-1050 Brussels © 1993 Copyright reserved to CENELEC members Ref. No. EN 61023:1993 E Licensed Copy: sheffieldun sheffieldun, na, Mon Nov 13 13:15:57 GMT+00:00 2006, Uncontrolled Copy, (c) BSI EN 61023:1993 © BSI 12-1999 2 Foreword At the request of the CENELEC 73rd Technical Board, HD 600 S1:1992 (IEC 1023:1990) was submitted to the CENELEC voting procedure for conversion into a European Standard. The text of the International Standard was approved by CENELEC as EN 61023 on 6 July 1993. The following dates were fixed: Annexes designated “normative” are part of the body of the standard. In this standard, Annex ZA is normative. Contents Page Foreword2 1Scope3 2Object3 3Layout3 Section 1. Operational and performance requirements 4General3 5Letter symbols3 6Performance requirements3 Section 2. Methods of testing and required test results 7General4 8Methods of presentation4 9Accuracy of SDME measurement5 10Roll and pitch6 11Construction and installation6 Annex ZA (normative) Other international publications quoted in this standard with the references of the relevant European publications7 Figure 1 Ship speed velocity vectors5 latest date of publication of an identical national standard(dop)1994-03-01 date of withdrawal of conflicting national standards(dow) Licensed Copy: sheffieldun sheffieldun, na, Mon Nov 13 13:15:57 GMT+00:00 2006, Uncontrolled Copy, (c) BSI EN 61023:1993 © BSI 12-19993 1 Scope This International Standard specifies the performance and type testing of Marine Speed and Distance Measuring Equipment (SDME) required by Regulation 12 of Chapter V of the International Convention for the Safety of Life at Sea, (SOLAS), 1974, as amended, and which is associated with: marine radar complying with IEC 936; marine gyro-compasses complying with ISO 8728; marine Automatic Radar Plotting Aids (ARPA) complying with IEC 872; general requirements for marine navigational equipment, complying with IEC 945. 2 Object To establish minimum performance standards and methods of testing and required test results for SDME. 3 Layout This standard is made up of two sections. Section 1 consists of the performance standards and is based upon the International Maritime Organization (IMO) Resolution A.478 (XII). The clause numbering of that Resolution is indicated in parentheses and all clauses whose meanings are identical to those in the Resolution are in italics. Section 2 consists of the methods of testing and required test results. Section 1. Operational and performance requirements 4 General 4.1 (1.1) Speed and distance measuring equipment (SDME) shall provide information on the distance run and the forward speed of a ship, through the water (Vw) or over the ground (Vg) or both (see Figure 1 for definitions of Vw and Vg). The equipment shall function at forward speeds up to the maximum speed of the ship and in water of depth greater than 3 m beneath the keel. 4.2 In addition to the requirements of 4.2.1 and 4.2.2 below, the SDME shall comply with the minimum requirements of clause 6 below and the IEC 945. The tests to be carried out in order to assess whether an equipment complies with the stated performance requirements and the test results required for compliance are specified in Section 2. 4.2.1 Where SDME information is generated by one unit of equipment and is displayed on another unit, the combination of the two units shall be regarded as forming the SDME and shall be tested as an entity. 4.2.2 Any facility provided by the equipment which is additional to the minimum requirements of this specification shall be tested to ensure that its operation (and, as far as is reasonably practicable, its malfunction) does not degrade the performance of the equipment. 5 Letter symbols 5.1 Explanation of letter symbols used in this standard is given in Figure 1. 6 Performance requirements 6.1 The system shall consist of a sensor and the necessary processing unit to convert the output signal of the sensor to speed and distance for display and for transmission to other equipment. 6.2 (2.1) Speed information may be presented in either analog or digital form or both. Where a digital display is used, its incremental steps shall not exceed 0.1 knots. Analog displays shall be graduated at least every 0.5 knots and be marked with figures at least every 5 knots. If the display can present the speed of the ship in both forward and reverse directions, the direction of movement shall be indicated unambiguously. 6.3 (2.2) Distance run information shall be presented in digital form. The display shall cover the range from 0 to not less than 9999.9 nautical miles and the incremental steps shall not exceed 0.1 nautical miles. Where practicable, means shall be provided for resetting a read-out to zero. 6.4 (2.3) The display shall be easily readable by day and by night. 6.5 (2.4) Means shall be provided for feeding distance-run information to other equipment fitted on board. The information shall be in the form of one contact closure or the equivalent for every 0.005 nautical miles run. The minimum contact closure time or equivalent pulse width shall be 50 ms. (The means of transmitting information to other equipment is under consideration.) 6.6 (2.5) If equipment is capable of being operated in either the “speed through the water” or “speed over the ground” modes, mode selection and mode indication shall be provided. Where automatic mode selection is provided, the mode in use shall be indicated. Licensed Copy: sheffieldun sheffieldun, na, Mon Nov 13 13:15:57 GMT+00:00 2006, Uncontrolled Copy, (c) BSI EN 61023:1993 4 © BSI 12-1999 6.7 (3) Accuracy of measurement 6.7.1 (3.1) Errors in the indicated speed, when the ship is operating free from shallow water effect(s), and from the effects of wind, current and tide shall not exceed 5 % of the speed of the ship, or 0.5 knots, whichever is the greater. 6.7.2 (3.2) Errors in the indicated distance run, when the ship is operating free from shallow water effect(s), and from the effects of wind, current and tide shall not exceed 5 % of the distance run by the ship in 1 h or 0.5 nautical miles in each hour, whichever is the greater. 6.7.3 (3.3) If the accuracy of devices to indicate speed and distance run can be affected by certain conditions (e.g., sea state and its effects, water temperature, salinity, sound velocity in water, the depth of water under the keel, heel, trim and draught of ship) details of possible effects shall be included in the equipment handbook. 6.8 (4) Roll and pitch 6.8.1 (4) The performance of the equipment shall be such that it will meet the requirements of this standard when the ship is rolling up to plus or minus 10 degrees and pitching up to plus or minus 5 degrees. 6.8.2 A statement regarding any degradation of performance at roll and pitch angles greater than those quoted in 6.8.1 shall be included in the equipment handbook. 6.9 (5) Construction and installation 6.9.1 (5.1) The system shall be so designed that neither the method of attachment of parts of the equipment to the ship nor damage occurring to any part of the equipment which penetrates the hull could result in the ingress of water to the ship. 6.9.2 (5.2) Where any part of the system is designed to extend from and retract into the hull of the ship, the design shall ensure that it can be extended, operated normally and retracted at all speeds up to the maximum speed of the ship. Its extended and retracted positions shall be clearly indicated at the display position. Explanation of letter symbols of Figure 1 opposite The direction of the vectors is referred to North. The direction of Ve is the ship heading (true compass course). The figure can be applied to any point of a ship, all vectors being equal and constant in time, as long as no parameter influencing the movement (own ships course and speed, wind and current) changes. During, for example, a course change, the vectors for various sensor locations are different and vary with time. In this case, the output of the SDME depends upon the location of the sensors. 6.9.3 The handbook shall include the manufacturers recommendations on the installation of the SDME, in particular the positioning of the sensor, as it affects the overall accuracy of the SDME. Section 2. Methods of testing and required test results 7 General 7.1 Tests shall be carried out at test sites nominated by the Testing Authority. The manufacturer shall, unless otherwise agreed, set up the equipment and ensure that it is operating normally before testing commences. 7.2 The general arrangements for the tests shall be as follows: 7.2.1 Where applicable, the units of the equipment shall be inter-connected by the longest electrical links for which the equipment has been designed. A link may be real or simulated. 7.2.2 For tests to determine speed and distance measurement accuracy, the signals normally received from the sensor shall be simulated as applicable to the particular type of device being tested. Where practicable, the output of the sensor shall be measured to determine the characteristics of its output signal. 7.2.3 Where realistic simulation is not practicable, the manufacturer shall demonstrate, to the satisfaction of the Testing Authority, that the equi