1、BRITISH STANDARD MARINE SERIES CONFIRMED JULY1999 BS MA87-3: 1987 ISO6764:1985 Series1 shipborne barges Part3: Specification for the arrangement, dimensions and method of test for lifting post castings ISO title: Shipbuilding Shipborne barges, series1 Lifting post casting Arrangement, dimensions and
2、 method of testing UDC 629.122.3:629.014.3BSMA87-3:1987 This BritishStandard, having been prepared under the directionof the Shipbuilding andMarine Standards Committee, was published underthe authorityof the BoardofBSI andcomes intoeffecton 31July1987 BSI 02-2000 The following BSI references relate
3、to the work on this standard: Committee reference SME/14 Draft for comment 83/79711 DC ISBN 0 580 16003 3 Committees responsible for this British Standard The preparation of this BritishStandard was entrusted by the Shipbuilding and Marine Standards Committee(SME/-) to Technical Committee SME/14, up
4、on which the following bodies were represented: Association of Master Lightermen and Barge Owners(Port of London) British Tugowners Association British Waterways Board HM Customs and Excise Shiprepairers and Shipbuilders Independent Association Amendments issued since publication Amd. No. Date of is
5、sue CommentsBSMA87-3:1987 BSI 02-2000 i Contents Page Committees responsible Inside front cover National foreword ii 1 Scope and field of application 1 2 References 1 3 Definition 1 4 Dimensions 1 5 Materials 1 6 Tests of castings 1 Annex Recommended minimum test specification of top post castings 5
6、 Figure 1 Arrangement of lifting post casting 2 Figure 2 Dimensions of top lifting post casting 3 Figure 3 Dimensions of bottom lifting post casting 4 Publications referred to Inside back coverBSMA87-3:1987 ii BSI 02-2000 National foreword This Part of BS MA87 has been prepared under the direction o
7、f the Shipbuilding and Marine Standards Committee and is identical with ISO6764:1985 “Shipbuilding Shipborne barges, series1 Lifting post casting Arrangement, dimensions and methods of testing”, published by the International Organization for Standardization(ISO). ISO6764 was produced as a result of
8、 international discussion in which the UK took an active part. Terminology and conventions. The text of the International Standard has been approved as suitable for publication as a BritishStandard without deviation. Some terminology and certain conventions are not identical with those used in Briti
9、shStandards; attention is drawn especially to the following. Where the words “InternationalStandard” appear, referring to this standard, they should be read as “Part of BS MA87”. The Technical Committee has reviewed the provisions of ASTM A609, ASTME186 and ASTM E709 1) , to reference is made in the
10、 text and has decidedthat 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
11、 itself confer immunity from legal obligations. Summary of pages This document comprises a front cover, an inside front cover, pagesi andii, pages1 to6, 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 i
12、ndicated in the amendment table on the inside front cover. Cross-references International Standard Corresponding BritishStandard ISO4175:1979 BS MA87 Series1 shipborne barges Part1:1980 Specification for main dimensions 1) Available from the American Society for Testing and Materials,1916 Race Stree
13、t, Philadelphia, Pa1910, USA.BSMA87-3:1987 BSI 02-2000 1 1 Scope and field of application This International Standard specifies the arrangement, dimensions and method of testing of lifting post castings for shipborne barges, series1. 2 References ISO4175, Shipbuilding Shipborne barges, series1 Main
14、dimensions. ASTM A609, Specification for ultrasonic examination of carbon and low-alloy steel castings. ASTM E186, Reference radiographs for heavy-walled2 to41/2 in (51 to114mm) steel castings. ASTM E709, Practice for magnetic particle examination. 3 Definition lifting post castings of barges, serie
15、s1 units designed to provide reliable and safe lifting of barges during handling on a barge carrier by means of a special loading frame attached to the ship crane, and the mounting and securing of barges in the hold and on deck 4 Dimensions The arrangement and dimensions of lifting post castings sha
16、ll comply with indications given inFigure 1, Figure 2 and Figure 3. 5 Materials The casting materials shall comply with the requirements for hull steel castings of a recognized classification society. The post shall be of sufficient ultimate strength to withstand a total load of1134t in tension and
17、compression. 6 Tests of castings Tests of top post castings shall be in accordance withnational requirements. The area to be tested non-destructively is indicated in Figure 2. NOTEThe Annex gives the recommended minimum test specification of top post castings.BSMA87-3:1987 2 BSI 02-2000 Series a Hei
18、ght, G mm 1A 4394 1B 3394 1C 2694 a SeeISO4175. Figure 1 Arrangement of lifting post castingBSMA87-3:1987 BSI 02-2000 3 NOTEThe area of non-destructive testing is shaded(seethe upper view). Figure 2 Dimensions of top lifting post castingBSMA87-3:1987 4 BSI 02-2000 Figure 3 Dimensions of bottom lifti
19、ng post castingBSMA87-3:1987 BSI 02-2000 5 Annex Recommended minimum test specification of top post castings (This annex forms an integral part of the Standard.) A.1 Origin of requirements The rules of the American Bureau of Shipping(ABS) and the American Society for Testing Materials(ASTM) have bee
20、n used to establish the minimum basis of testing of the top post casting. Any other national standard with the same minimum requirements is acceptable. A.2 Procedure A.2.1 Carry out a Magnaflux test of the edges of the“lifting eye” portion of all top castings. Defects indicated by the Magnaflux test
21、 shall be repaired bythe foundry in accordance with ABS rules. The Magnaflux test shall be dry-powder,4 to5A/mm inaccordance with ASTM E709. A.2.2 The first10 castings of an order placed shall have radiographic and ultrasonic examination in the “lifting eye” portion. The balance of the castings shal
22、l have ultrasonic examination only. The radiographic examination requirement may be waived for continuous additional orders. A.2.3 Carry out an ultrasonic inspection on the “lifting eye” portion of all top castings and particularly the top corner where the cross-section of metal is thinnest, in acco
23、rdance with ASTM A609. The ultrasonic inspection shall be made at2MHz. The indications shall be compared to a standard test block with flaws corresponding to quality level1 of Table2 of ASTM A609. Any casting which has a defect indicated larger than thetest block shall be submitted to radiographic i
24、nspection in accordance with ASTM E186. A.2.4 Any casting found defective by the radiographic examination shall be replaced, unless the defect is of minor nature and can be repaired in accordance with ABS Rules.6 blankBSMA87-3:1987 BSI 02-2000 Publications referred to Seenational foreword.BS MA87-3:
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