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1、BRITISH STANDARD MARINE SERIES CONFIRMED AUGUST 1980 BS MA 10:1971 Specification for Oval eyeplates UDC 629.12.014.24:621.885 Licensed Copy: London South Bank University, London South Bank University, Sat Dec 09 02:13:51 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS MA 10:1971 This British Standard,
2、 having been approved by the Shipbuilding & Marine Industry Standards Committee, was published under the authority of the Executive Board on 27 October 1971 BSI 02-2000 The following BSI references relate to the work on this standard: Committee reference SME/2 Draft for approval 70/9211 ISBN 0 580 0
3、6646 0 Foreword This British Standard has been prepared under the authority of the Shipbuilding and Marine Industry Standards Committee, and is based on a proposal of the British Ship Research Association. This standard makes reference to the following British Standards: BS 4360, Weldable structural
4、 steels. BS 1700, Memorandum on ships derrick rigs. 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 ob
5、ligations. Summary of pages This document comprises a front cover, an inside front cover, pages i and ii, pages 1 and 2, 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
6、on the inside front cover. Amendments issued since publication Amd. No.DateComments Licensed Copy: London South Bank University, London South Bank University, Sat Dec 09 02:13:51 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS MA 10:1971 BSI 02-2000i Contents Page ForewordInside front cover 1Scope1 2T
7、ypes and dimensions1 3Material1 4Heat treatment1 5Testing of material1 6Quality of manufacture and inspection1 7Marking1 Figure 1 Key to eyeplate dimensions2 Table 1 Size of stamps2 Table 2 Dimensions of eyeplates2 Licensed Copy: London South Bank University, London South Bank University, Sat Dec 09
8、 02:13:51 GMT+00:00 2006, Uncontrolled Copy, (c) BSI ii blank Licensed Copy: London South Bank University, London South Bank University, Sat Dec 09 02:13:51 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS MA 10:1971 BSI 02-20001 NOTEUsers of this British Standard, Marine Series, should note that while
9、 observing the requirements of the standard they should, at the same time, ensure compliance with such statutory requirements, rules and regulations as may be applicable to the individual ship concerned. 1 Scope 1.1 This British Standard relates to mild steel eyeplates with worked or forged oval eye
10、s for use with “Dee” shackles, where the shackle is to be reeved (i.e. slotted or hooked) through the eyeplate. 1.2 The standard provides a specification for a range of nominal sizes of eyeplates, viz, from 1.0 to 20.0, which are suitable for use with metric sizes of steel shackles. 1.3 The eyeplate
11、s have been designed to withstand the stated safe working load (S.W.L.) when applied at any angle to the eyeplate. 2 Types and dimensions 2.1 Eyeplates constructed in accordance with the requirements of this British Standard shall be of the form shown in Figure 1, and are as follows: Type A suitable
12、 for installation on decks, bulwarks, etc. Type B suitable for installation on derricks. 2.2 The dimensions of the eyeplates shall be as set out in Table 2, and the permissible variation in the finished eyeplates from the dimensions shown shall be within the following limits of tolerance: 1) externa
13、l dimensions, from 0 % to + 5 %, 2) internal dimensions, from 5 % to 0 %. 2.3 The nominal size of the eyeplate shall be as shown in the first column of Table 2. 3 Material 3.1 The eyeplate shall be made from weldable steel plate conforming to the requirements of BS 4360, Grade 40A. Alternatively, sh
14、ip quality steel plate may be used, provided that it has equivalent weldable and mechanical properties. 3.2 When requested by the purchaser, the manufacturer shall furnish proof that the material used in the eyeplate conforms to the requirements of 3.1. 4 Heat treatment After completion of forging,
15、the eyeplate shall be normalized by uniformly heating in a furnace until the whole of the metal has attained a temperature of between 880 C and 910 C. The eyeplate shall be maintained at this temperature for a period of 30 min for each 25 mm of thickness (dimension d of Figure 1) and other thickness
16、es in proportion. At the end of this period the eyeplate shall be withdrawn from the furnace and allowed to cool in still air. 5 Testing of material The purchaser may select samples for analysis and mechanical test, of the steel from which the eyeplates are to be made or of the finished eyeplates, b
17、ut the cost of the preparation and carrying out of such tests, including the cost of the material destroyed, shall be borne by the purchaser. Further, the purchaser shall have clearly stipulated in his enquiry or order that such tests are to be carried out. 6 Quality of manufacture and inspection 6.
18、1 The eyeplate shall be formed from a shaped “blank” obtained by a gas-cutting process. The eyeplate shall subsequently be forged or machined in order to produce the section shapes shown in Figure 1. Care shall be taken to ensure that a smooth transition is made between these sections. 6.2 The surfa
19、ce of the finished eyeplate shall be free from visible cracks and flaking. 6.3 The representative of the purchaser shall have access to the works of the manufacturer at all reasonable times in order to inspect the eyeplates at any stage of manufacture, including any testing machines and methods of e
20、xamination adopted. He shall have the right to reject any eyeplates which do not conform to the requirements of this standard. 7 Marking 7.1 Each eyeplate shall be permanently and legibly marked with the number of this British Standard and with the nominal size of the eyeplate as given in the first
21、column of Table 2. Example of marking of an oval eyeplate of nominal size 2.5: “BS MA 10 2.5” Licensed Copy: London South Bank University, London South Bank University, Sat Dec 09 02:13:51 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS MA 10:1971 2 BSI 02-2000 7.2 Care shall be taken to ensure that t
22、he marking is made on a low stressed surface, and is neither excessive in sharpness of cut nor in depth of indentation. The maximum sizes of stamps used for marking shall be as set out in Table 1. Table 1 Size of stamps Table 2 Dimensions of eyeplates Nominal size of eyeplateMaximum size of stamp 1.
23、0 up to and including 2.5 Over 2.5 mm 5.0 6.5 Figure 1 Key to eyeplate dimensions (see Table 2) (All dimensions are in millimetres except where otherwise indicated) Nominal size Safe working loada (in tonnes) abcdefhlr1r2 (minimum) Weld dimension w Mass approx. (type A) kg s Leg length Throat thickn
24、ess 1 1.6 2 2.5 3 4 5 6 8 10 12 16 20 1.0 1.6 2.0 2.5 3.2 4.0 5.0 6.3 8.0 10.0 12.5 16.0 20.0 35 42 50 55 66 77 87 91 101 117 128 145 157 22 24 27 29 33 36 41 45 51 56 61 67 73 67 82 100 105 126 147 167 171 201 217 248 265 297 16 20 25 25 30 35 40 40 50 50 60 60 70 25 33 35 39 42 48 57 66 73 80 87 9
25、5 105 8 8 12 12 12 15 18 18 20 22 24 26 28 52.0 65.0 73.5 78.5 88.5 101.0 117.5 128.5 148.5 158.0 177.5 188.5 211.5 95 120 132 140 180 210 225 240 270 300 335 370 420 27.0 32.0 38.5 39.5 46.5 53.0 60.5 62.5 75.5 78.0 90.5 93.5 106.5 5 5 5 6 7 7 8 8 10 10 12 12 14 6 7 9 9 10 12 14 14 17 17 20 20 25 6
26、 6 8 8 10 10 12 12 15 15 18 18 20 4 4 6 6 7 7 9 9 11 11 13 13 14 0.35 0.70 1.10 1.90 2.10 3.40 4.90 5.80 9.50 9.90 16.50 19.00 38.80 a These values are the design S.W.L. for the eyeplate and have been calculated for a pull applied at any angle to it. Licensed Copy: London South Bank University, Lond
27、on South Bank University, Sat Dec 09 02:13:51 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS MA 10:1971 BSI 02-2000 BSI Certification Trade Mark (The Kitemark) The British Standards Institution is the owner of a registered certification trade mark. It is usually associated with the words “approved to
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