BS ISO 22673-2008 Ships and marine technology - Launching appliances for free-fall lifeboats《船舶和海洋技术 自由降落式救生艇的降落装置》.pdf

1、BRITISH STANDARDBS ISO 22673:2008Ships and marine technology Launching appliances for free-fall lifeboatsICS 47.020.50g49g50g3g38g50g51g60g44g49g42g3g58g44g55g43g50g56g55g3g37g54g44g3g51g40g53g48g44g54g54g44g50g49g3g40g59g38g40g51g55g3g36g54g3g51g40g53g48g44g55g55g40g39g3g37g60g3g38g50g51g60g53g44g4

2、2g43g55g3g47g36g58BS ISO 22673:2008This British Standard was published under the authority of the Standards Policy and Strategy Committee on 30 April 2008 BSI 2008ISBN 978 0 580 57112 1National forewordThis British Standard is the UK implementation of ISO 22673:2008.The UK participation in its prepa

3、ration was entrusted by Technical Committee SME/32, Ships and marine technology Steering committee, to Panel SME/32/-/4, Ships and marine technology Outfitting and deck machinery.A list of organizations represented on this committee can be obtained on request to its secretary.This publication does n

4、ot purport to include all the necessary provisions of a contract. Users are responsible for its correct application.Compliance with a British Standard cannot confer immunity from legal obligations.Amendments/corrigenda issued since publicationDate CommentsReference numberISO 22673:2008(E)INTERNATION

5、AL STANDARD ISO22673First edition2008-03-15Ships and marine technology Launching appliances for free-fall lifeboats Navires et technologie maritime Engins de mise leau des embarcations de sauvetage par chute libre BS ISO 22673:2008ii iiiContents Page Foreword iv Introduction v 1 Scope 1 2 Normative

6、reference 1 3 Terms and definitions .2 4 Performance .2 4.1 Free-fall launching of lifeboat (hereinafter simply frerred to as free-fall launching)2 4.2 Recovery of lifeboat 3 4.3 Controlled launching of lifeboat.3 4.4 Stowage of lifeboat3 4.5 Float-free launching of lifeboat 3 5 Design and construct

7、ion.3 5.1 General requirements3 5.2 Construction.4 5.3 Launching ramp.4 5.4 Arm4 5.5 Winch 5 5.6 Loose gears5 5.7 Lashing gears.6 5.8 Embarkation platform6 5.9 Operation 6 6 Test method6 6.1 Test of winch6 6.2 Test of loose gears 6 6.3 Test of launching appliance .6 7 Acceptance code .9 7.1 Prototyp

8、e test.9 7.2 Production test.10 8 Inspection and maintenance 10 9 Marking .11 Bibliography 12 BS ISO 22673:2008iv Foreword ISO (the International Organization for Standardization) is a worldwide federation of national standards bodies (ISO member bodies). The work of preparing International Standard

9、s 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. International organizations, governmental and non-governmental, in liaison with ISO, also take

10、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 rules given in the ISO/IEC Directives, Part 2. The main task of technical committees is t

11、o 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 least 75 % of the member bodies casting a vote. Attention is drawn to the possibility

12、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 22673 was prepared by Technical Committee ISO/TC 8, Ships and marine technology, Subcommittee SC 4, Outfitting and deck machinery. BS I

13、SO 22673:2008vIntroduction This International Standard forms a code of practical interpretation and amplification of the requirements of the convention for the Safety of Life at Sea (SOLAS), to provide an identical basis for design, manufacture and acceptance of launching appliances for free-fall li

14、feboats for use by ship-owners, shipbuilders and appropriate organizations. This International Standard provides the design requirements for launching ramp length and angle. According to 6.1.4.7 of the LSA Code, the secondary launching appliance can use both the ships main and emergency power suppli

15、es, so it is significant to admit the conviction that boat handling appliances can be independent of launching ramps. A simulated launching test and strip for inspection are supplemented in the test method. This International Standard includes requirements of lifeboat stowage, arrangement on board,

16、inspection and maintenance because the launching appliances for free-fall lifeboats are closely related to ships. This International Standard is mainly based on amendments to SOLAS 1974, dating from 1983 to 1996, and relevant IMO resolutions and protocols, especially Res.MSC.47(66)1, Res.MSC.48(66)2

17、, Res.MSC.81(70)3, Res.MSC.216(82)4and Res.MSC.218(82)5. This International Standard also refers to MSC/Circ.9806, MSC/Circ.1205 and MSC/Circ.1206. BS ISO 22673:2008blank1Ships and marine technology Launching appliances for free-fall lifeboats 1 Scope This International Standard defines certain term

18、s for launching appliances for free-fall lifeboats (hereinafter simply referred to as free-fall launching appliances) and specifies the requirements for design, construction, acceptance, examination, performance, operation and maintenance. This International Standard is applicable to the launching a

19、ppliances which use inclined ramps to launch free-fall lifeboats (hereinafter simply referred to as lifeboats) from ships and from offshore platforms. 2 Normative reference The following referenced documents are indispensable for the application of this document. For dated references, only the editi

20、on cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies. ISO 2944, Fluid power systems and components Nominal pressures ISO 3828, Shipbuilding and marine structures Deck machinery Vocabulary and symbols ISO 4413, Hydraulic fluid powe

21、r General rules relating to systems ISO 4414, Pneumatic fluid power General rules relating to systems ISO 15516 Ships and marine technology Launching appliances for davit-launched lifeboats IEC 60092 (all parts), Electrical installations in ships IEC 60529:2001, Degrees of protection provided by enc

22、losures (IP Code) IMO LSA Code, International Convention for the Safety of Life at Sea (SOLAS) 1974 Marpol 73/78, International Convention for the Prevention of Pollution From Ships, 1973 MSC.1/Circ.1205, Measures to prevent accidents with life-boats MSC.1/Circ.1206, Guidelines for developing operat

23、ion and maintenance manuals for life-boat systems BS ISO 22673:20082 3 Terms and definitions For the purposes of this document, the terms and definitions given in ISO 3828, ISO 15516, IMO LSA Code and the following apply. 3.1 maximum working load load applied to the ramp or loose gear of a free-fall

24、 launching appliance when it launches the boat of the maximum all-up weight for which it is designed 3.2 maximum recovering load load applied to the loose gear of a free-fall launching appliance in order to recover the non-loaded boat with the operating crew of the maximum all-up weight for which it

25、 is designed NOTE The minimum operating crew compliment is three persons, their average mass being 75 kg. 3.3 lightest launching load load applied to the ramp or loose gear of a free-fall launching appliance when it launches the non-loaded boat of the minimum all-up weight for which it is designed 3

26、.4 maximum working load of winch load applied to the exit end of the falls on the outmost layer at the winch drum of a free-fall launching appliance under any working condition 3.5 hoisting load of winch load applied to the exit end of the falls on the outmost layer at the winch drum of a free-fall

27、launching appliance when it hoists the maximum recovering load by means of its arms and falls 3.6 launching load of winch load applied to the exit end of the falls on the outmost layer at the winch drum of a free-fall launching appliance when it launches the maximum working load by means of its arms

28、 and falls 3.7 lightest launching load of winch load applied to the exit end of the falls on the outmost layer at the winch drum of a free-fall launching appliance when it launches the lightest launching load by means of its arms and falls 4 Performance 4.1 Free-fall launching of lifeboat (hereinaft

29、er simply frerred to as free-fall launching) 4.1.1 A free-fall launching appliance shall, by means of launching ramps, be capable of safe free-fall launching the fully-loaded boat (equivalent to maximum working load) and/or the non-loaded boat (equivalent to lightest launching load) from the stowed

30、position, against a trim of up to 10 and a list of up to 20 either way, independent of any means other than gravity or stored mechanical power which, in turn, is independent of the ships power supply. It shall also be capable of enabling the lifeboat to be effectively clear of the ship after entry i

31、nto the water. 4.1.2 Notwithstanding the requirement of 4.1.1, a free-fall launching appliance for oil tankers, chemical tankers and gas carries with a final angle of heel greater than 20 calculated in accordance with MARPOL 73/78, shall be capable of free-fall launching of the fully-loaded boat or

32、the non-loaded boat at the final angle of heel on the lower side of the ship taking into consideration the final damaged waterline of the ship. It shall also be capable of enabling the lifeboat to be effectively clear of the ship after entry into the water. BS ISO 22673:200834.1.3 A free-fall launch

33、ing appliance shall be capable of simulating launching of the lifeboat stationed on the ramp, without allowing the lifeboat to fall into the water. 4.2 Recovery of lifeboat A free-fall launching appliance shall be capable of recovering a non-loaded lifeboat with crew (equivalent maximum recovering l

34、oad) by power, from the water to its stowed position under ship conditions of approximately even keel. 4.3 Controlled launching of lifeboat Each free-fall launching appliance shall be provided with a secondary means of launching the fully-loaded boat and the non-loaded boat by means of arms and fall

35、s under control, against a trim of up to 2 and a list of up to 5 either way, from its stowed position, into the water. Such means can use the ships main and emergency power supplies. 4.4 Stowage of lifeboat 4.4.1 A free-fall launching appliance shall be so designed and arranged that the distance fro

36、m the lowest point on the lifeboat it serves, to the still waters surface does not exceed the lifeboats free-fall certification height. 4.4.2 The lifeboat shall not only be held securely in its stowed position, but also be constantly in a ready-to-launch state so that two crew members can complete t

37、he preparation for embarkation and launching the lifeboat within 5 min. 4.5 Float-free launching of lifeboat Where a free-fall launching appliance is designed to float free, the float-free release of the lifeboat from its stowed position shall be automatic. 5 Design and construction 5.1 General requ

38、irements 5.1.1 A free-fall launching appliance shall be constructed from materials that are not damaged in the air temperature range 30 C to +65 C. 5.1.2 Materials of a free-fall launching appliance which are exposed to the weather shall be resistant to deterioration and corrosion, or protected by g

39、alvanizing and other safeguarding means. 5.1.3 Equipment that is likely to be immersed in seawater such as hydrostatic release units and weak links shall operate in the seawater temperature range 1 C to 30 C. 5.1.4 The major structural members, such as ramps, arms, sheave racks, etc., shall be made

40、from materials in the form of steel plates, tubes or profiled bar that meet the requirements for seagoing conditions and have the satisfactory weldability. Their minimum thickness shall be not less than 6 mm. The major structural members shall be designed with a factor of safety of not less than 4,5

41、 on the basis of the maximum working load assigned and the ultimate strengths of the materials used for construction. 5.1.5 Loose gears, such as lifting beams, blocks, chains, links, shackles, hooks, padeyes, etc., shall not be made from cast and/or similar fragile materials. Loose gears shall be de

42、signed with a factor of safety of not less than 6 on the basis of the maximum working load assigned and the ultimate strengths of the materials used in connection with launching equipment. 5.1.6 Each free-fall launching appliance shall remain effective for life-saving under conditions of icing. BS I

43、SO 22673:20084 5.1.7 Each free-fall launching appliance shall be so constructed that only a minimum amount of routine maintenance is necessary. All parts requiring regular maintenance by the ships crew shall be readily accessible and easily maintained. 5.2 Construction For the purpose of meeting the

44、 performance requirements as specified in 4.1 to 4.4, each free-fall launching appliance shall have four functions: viz, free-fall launching, recovering, controlled launching, lifeboat stowage. Therefore, the construction of a free-fall launching appliance shall consist of two major portions: the la

45、unching ramp and the boat recovery/launching appliance. The two portions are usually designed to be integrated into one unit, but sometimes can be designed to be constructed separately with independent performance. Notwithstanding the design, the four functions as mentioned above shall be provided w

46、ith, and all relevant performances shall be in compliance with, the accorded requirements of this International Standard. 5.3 Launching ramp 5.3.1 The launching ramp shall be designed and arranged according to the parameters provided by the manufacturer of the lifeboat and certified by the approving

47、 authority in order to protect the occupants in the lifeboat from harmful acceleration forces resulting from free-fall launching, and to ensure the lifeboats effective clearing of the ship after entry into the water. With the ship on an even keel, the angle between the horizontal and the launch rail

48、 of the lifeboat in its launching position shall be equal to the certified launching ramp angle. This angle shall not be less than 30. With the ship on an even keel, the distance from the stern of the lifeboat in its launching position to the lower end on the ramp shall comply with the requirements

49、of the certified launching ramp length. 5.3.2 The launching ramp shall be so designed and arranged that only one release hook is used to link the lifeboat to the launching ramp. The ramp shall also be provided with means to carry out simulated launching of the lifeboat. 5.3.3 A free-fall launching appliance shall be constructed so as to prevent sparking and/or incendiary friction during the launching of the lifeboat. Means such as rollers or sliding boards can be used on the launching ramp. 5.3.4 Against unfavourable conditions of tri