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1、BRITISH STANDARD MARINE SERIES BS MA 92:1981 ISO 799:1980 Specification for Pilot ladders ISO title: Shipbuilding Pilot ladders UDC 629.12.046 Licensed Copy: London South Bank University, London South Bank University, Sat Dec 09 02:20:52 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS MA 92:1981 This
2、British Standard, having been prepared under the direction of the Shipbuilding and Marine Standards Committee, was published under the authority of the Executive Board and comes into effect on 31 December 1980 BSI 02-2000 The following BSI references relate to the work on this standard: Committee re
3、ference SME/2 Draft for comment 78/76477 DC ISBN 0 580 11767 7 Amendments issued since publication Amd. No.Date of issueComments Licensed Copy: London South Bank University, London South Bank University, Sat Dec 09 02:20:52 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS MA 92:1981 BSI 02-2000i Conten
4、ts Page National forewordii 1Scope and field of application1 2References1 3Dimensions1 4Materials1 5Construction1 6Designation2 7Marking2 Figure 1 Assembled pilot ladder3 Figure 2 Step4 Figure 3 Split distance piece4 Figure 4 Spreader step5 Figure 5 Replacement step5 Figure 6 Replacement spreader st
5、ep6 Table 1 Components and materials1 Table 2 Number of steps and relative positions of spreaders2 Publications referred toInside back cover Licensed Copy: London South Bank University, London South Bank University, Sat Dec 09 02:20:52 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS MA 92:1981 ii BSI
6、02-2000 National foreword This British Standard has been prepared under the direction of the Shipbuilding and Marine Standards Committee and is identical with ISO 799:1980 “Shipbuilding Pilot ladders”, published by the International Organization for Standardization (ISO). Terminology and conventions
7、. The text of the International Standard has been approved as suitable for publication as a British Standard without deviation. Some terminology and certain conventions are not identical with those used in British Standards; attention is especially drawn to the following. Wherever the words “Interna
8、tional Standard” and “ISO 799” appear, referring to this standard, they should be read as “British Standard” and “BS MA 92” respectively. NOTEMarking BS MA 92 on or in relation to a product is a claim by the manufacturer that the product has been manufactured in accordance with the requirements of t
9、he standard. The accuracy of such a claim is therefore solely the manufacturers responsibility. Enquiries as to the availability of third party certification to support such claims should be addressed to the Director, British Standards Institution, Maylands Avenue, Hemel Hempstead, Herts HP2 4SQ in
10、the case of certification marks administered by BSI or to the appropriate authority for other certification marks. There are no corresponding British Standards for the following International Standards referred to in the text: ISO 1181:1973, ISO 1461:1973 and ISO 2262:1972. With reference to ISO 118
11、1, to which reference is made in Table 1, manila side ropes and extension service ropes of grade 1 quality in accordance with BS 2052:1977 “Specification for ropes made from manila, sisal, hemp, cotton and coir” are acceptable for use in conjunction with this standard. With reference to ISO 1461, to
12、 which reference is made in 5.3, the coatings specified in BS 729:1971 “Hot dip galvanized coatings on iron and steel articles” are acceptable for use in conjunction with this standard. With reference to ISO 2262, to which reference is made in Table 1, a 64 mm size thimble specified in BS 3226:1960
13、“Thimbles for natural fibre ropes” is considered by Technical Committee SME/2 to be technically equivalent, for the application required by this British Standard, to the size in ISO 2262 specified in this standard. A British Standard does not purport to include all the necessary provisions of a cont
14、ract. 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 ISO/R 887:1968BS 4320:1968 Metal washers for general eng
15、ineering purposes (Technically equivalent) ISO 2358:1972BS 4929 Steel hexagon prevailing-torque type nuts Part 1:1973 Metric series (Technically equivalent) Summary of pages This document comprises a front cover, an inside front cover, pages i and ii, pages 1 to 6, an inside back cover and a back co
16、ver. 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: London South Bank University, London South Bank University, Sat Dec 09 02:20:52 GMT+00:00 2006, Uncontrolled Copy
17、, (c) BSI BS MA 92:1981 BSI 02-20001 NOTEUsers of this British Standard Marine Series should note that, while observing the requirements of this standard, they should at the same time ensure compliance with such statutory requirements, rules and regulations as may be applicable to the individual shi
18、p concerned. 1 Scope and field of application This International Standard specifies requirements for a ships pilot ladder which is provided for a pilot to embark and disembark safely. 2 References ISO/R 887, Washers for hexagon bolts and nuts Metric series. ISO 1181, Three- or four-strand manila and
19、 sisal ropes. ISO 1461, Metallic coatings Hot dip galvanized coatings on fabricated ferrous products Requirements. ISO 2262, Rope thimbles. ISO 2358, Prevailing torque-type steel hexagon locknuts Dimensions Metric series. 3 Dimensions The dimensions of the assembled pilot ladder and of the component
20、s shall be in accordance with Figure 1 to Figure 6. 4 Materials 4.1 The materials of components shall be in accordance with Table 1. Metal parts shall not be used in the pilot ladder construction, except for items 5, 9, 10 and 11. 4.2 Steps, spreader steps, replacement step, replacement spreader ste
21、p and split distance pieces shall each be made of hardwood (ash, oak, elm, beech or teak) free from knots, or from other materials having equivalent relative density, strength, durability and buoyancy. The lowest four steps may be made of rubber of sufficient strength and stiffness, or of other suit
22、able material of equivalent characteristics. Steps and spreaders shall have an efficient non-slip surface. 4.3 The lashing for side ropes shall consist of two- or three-ply marline of minimum breaking strength 800 N, or other suitable material of equivalent strength. 5 Construction 5.1 The pilot lad
23、der shall be assembled in accordance with Figure 1 and Table 2 to have an equal step spacing of 310 5 mm. 5.2 Steps shall be constructed from one piece to the dimensions given in Figure 2. Their non-slip upper surfaces shall be provided by either a) longitudinal grooving, or b) the application of an
24、 approved non-slip coating. 5.3 Spreader steps shall be constructed from one main bar and two split distance pieces to the dimensions given in Figure 4, held firmly together by four M5 cup square bolts, washers and prevailing torque nuts. Metal parts shall be galvanized in accordance with ISO 1461.
25、Spreaders shall be positioned in accordance with Table 2. Table 1 Components and materials ItemComponentMaterialSpecification 1 2 3 4 5 6 7 8 9 10 11 Step Spreader step Side ropes Side rope seizing Rope thimble Extension service rope Replacement step Replacement spreader Cup square bolt Washer Preva
26、iling torque nut Hardwood Hardwood Manila Marline Steel, galvanized Manila Hardwood Hardwood Steel, galvanized Steel, galvanized Steel, galvanized See 4.2 See 4.2 ISO 1181, Quality 1 See 4.3 ISO 2262, Table 2, nominal size 20 ISO 1181, Quality 1 See 4.2 See 4.2 M 5 ISO/R 887 M 5 ISO 2358 M 5 License
27、d Copy: London South Bank University, London South Bank University, Sat Dec 09 02:20:52 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS MA 92:1981 2 BSI 02-2000 Table 2 Number of steps and relative positions of spreaders 5.4 Side ropes shall have a diameter of 20 mm (circumference 64 mm) and shall be
28、seized together as closely as possible above and below each step by a figure-of-eight racking seizing. The side ropes below the bottom step shall have a double racking seizing as shown in Figure 1. A racking seizing shall be applied below the rope thimbles. Side ropes shall each be of one continous
29、length without joints. 5.5 A single 20 mm diameter (circumference 64 mm) manila extension service rope 3 000 mm in length (minimum) shall be fitted to each side rope thimble by means of an eye splice. 5.6 All rope ends shall be whipped for a distance of 25 mm with waxed sailmakers twine or equivalen
30、t material. 5.7 One spare replacement step shall be constructed from a single section to the dimensions given in Figure 5, and assembled with two split distance pieces as required in 5.3. 5.8 One spare replacement spreader shall be constructed from one top section to the dimensions given in Figure 6
31、, and assembled with two split distance pieces as required in 5.3. 6 Designation Pilot ladders conforming to this International Standard shall be designated by the following indications, in the order given: number of this International Standard; number of steps (Table 2). Example: The designation fo
32、r a pilot ladder consisting of 14 steps is: Pilot ladder ISO 799 S14 NOTEThe length of a pilot ladder determined by the designation shall include an allowance for a 15 adverse list. Spare or additional components shall be designated by reference to the relevant International Standard. Example: The d
33、esignation for a spare step according to this International Standard is: Step ISO 799 7 Marking Pilot ladders conforming to this International Standard shall be permanently marked under the two steps by the number of this International Standard: ISO 799. Number of steps s Position(s) of spreader ste
34、p(s)a 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 30 5 5 5 5 5 5 5 5 5, 12 5, 13 5, 14 5, 14 5, 14 5, 14 5, 14 5, 14 5, 14 5, 14, 21 5, 14, 22 5, 14, 23 5, 14, 23 5, 14, 23 5, 14, 23 5, 14, 23 a The spreader step positions are determined by the step number counted from the botto
35、m of the ladder. Licensed Copy: London South Bank University, London South Bank University, Sat Dec 09 02:20:52 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS MA 92:1981 BSI 02-20003 Figure 1 Assembled pilot ladder Licensed Copy: London South Bank University, London South Bank University, Sat Dec 09
36、02:20:52 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS MA 92:1981 4 BSI 02-2000 Figure 2 Step * Excluding the depth of the grooving or non-slip coating. See 5.2. Figure 3 Split distance piece Licensed Copy: London South Bank University, London South Bank University, Sat Dec 09 02:20:52 GMT+00:00 200
37、6, Uncontrolled Copy, (c) BSI BS MA 92:1981 BSI 02-20005 Figure 4 Spreader step NOTEThe other dimensions are as in Figure 2. Figure 5 Replacement step Licensed Copy: London South Bank University, London South Bank University, Sat Dec 09 02:20:52 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS MA 92:19
38、81 6 BSI 02-2000 NOTEThe other dimensions are as in Figure 4. * Excluding the depth of the grooving or non-slip coating. See 5.2. Figure 6 Replacement spreader step Licensed Copy: London South Bank University, London South Bank University, Sat Dec 09 02:20:52 GMT+00:00 2006, Uncontrolled Copy, (c) B
39、SI BS MA 92:1981 BSI 02-2000 Publications referred to See national foreword. Licensed Copy: London South Bank University, London South Bank University, Sat Dec 09 02:20:52 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS MA 92:1981 ISO 799:1980 BSI 389 Chiswick High Road London W4 4AL BSI British Stand
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