1、Ships and marine technology Launching appliances for davit-launched liferafts Navires et technologie maritime Engins de mise leau des radeaux de sauvetage sous bossoirs ISO 2011 Reference number ISO 13122:2011(E) First edition 2011-08-15 ISO 13122 INTERNATIONAL STANDARDISO 13122:2011(E)COPYRIGHT PRO
2、TECTED DOCUMENT ISO 2011 All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized in any form or by any means, electronic or mechanical, including photocopying and microfilm, without permission in writing from either ISO at the address below or ISOs
3、member body in the country of the requester. ISO copyright office Case postale 56 CH-1211 Geneva 20 Tel. + 41 22 749 01 11 Fax + 41 22 749 09 47 E-mail copyrightiso.org Web www.iso.org Published in Switzerland ii ISO 2011 All rights reservedISO 13122:2011(E)Contents Page Foreword iv Introduction v 1
4、 Scope 1 2 Normative references . 1 3 Terms and definitions . 1 4 Performance . 2 5 Design . 3 6 Construction . 4 6.1 General . 4 6.2 Loose gears 4 6.3 Davit 4 6.4 Turning device 4 6.5 Winch 5 6.6 Automatic release hook . 5 7 Operation and safety 6 8 Inspection and maintenance 6 9 Test methods 7 9.1
5、 General . 7 9.2 Loose gears 7 9.3 Winch 7 9.4 Launching appliances 8 10 Acceptance code . 9 10.1 Prototype testing . 9 10.2 Production testing .10 11 Marking .10 ISO 2011 All rights reserved iiiForeword ISO (the International Organization for Standardization) is a worldwide federation of national s
6、tandards bodies (ISO member bodies). The work of preparing International Standards 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
7、organizations, governmental and non-governmental, in liaison with ISO, also take 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 gi
8、ven in the ISO/IEC Directives, Part 2. The main task of technical committees is to 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
9、 75 % of the member bodies casting a vote. Attention is drawn to the possibility 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 13122 was prepared by Technical Committee ISO/TC 8, Sh
10、ips and marine technology, Subcommittee SC 4, Outfitting and deck machinery. ISO 13122:2011(E)iv ISO 2011 All rights reservedIntroduction This International Standard forms a code of practical interpretation and amplification of the requirements of the International Convention for the Safety of Life
11、at Sea (SOLAS). It provides an identical basis for design, construction and acceptance of launching appliances for davit-launched liferafts for use by ship-owners, shipbuilders and appropriate organizations. Automatic release hooks are usually considered as independent equipment for statutory survey
12、 and have to obtain type approval and undergo acceptance testing by the authorities or their delegates. There are special requirements for their design, construction and acceptance testing stipulated by the IMO (International Maritime Organization). It is therefore intended that an International Sta
13、ndard specific to the automatic hook be drafted separately. This International Standard is mainly based on amendments to SOLAS 1974, dating from 1983 to 1996, and related IMO resolutions and protocols, in particular Resolutions MSC.47(66), MSC.48(66), MSC.81(70), MSC.216(82), MSC.218(82) and MSC.226
14、(82). It also refers to IMO circulars MSC/Circ.1205 1)and MSC/Circ.1206 2) . 1) Guidelines for Developing Operation and Maintenance Manuals for Lifeboat Systems. 2) Measures to Prevent Accidents with Lifeboats. ISO 13122:2011(E) ISO 2011 All rights reserved vINTERNATIONAL STANDARD ISO 13122:2011(E)
15、Ships and marine technology Launching appliances for davit-launched liferafts 1 Scope This International Standard specifies requirements for the performance, design, construction, operation, safety, inspection, maintenance, and testing and acceptance of launching appliances for davit-launched lifera
16、fts (hereinafter referred to as “liferafts”) installed on a variety of sea-going ships. 2 Normative references The following referenced documents are indispensable for the application of this document. For dated references, only the edition cited applies. For undated references, the latest edition o
17、f the referenced document (including any amendments) applies. ISO 15516, Ships and marine technology Launching appliances for davit-launched lifeboats ISO 2944, Fluid power systems and components Nominal pressures ISO 4413, Hydraulic fluid power General rules and safety requirements for systems and
18、their components ISO 4414, Pneumatic fluid power General rules and safety requirements for systems and their components IEC 60092 (all parts), Electrical installations in ships IEC 60529, Degrees of protection provided by enclosures (IP Code) 3 Terms and definitions For the purposes of this document
19、, the terms and definitions given in ISO 15516 and the following apply. 3.1 non-loaded liferaft liferaft fully equipped without persons 3.2 fully loaded liferaft liferaft fully equipped and loaded with a full complement of persons NOTE The mass of each person is taken as being 82,5 kg. 3.3 maximum w
20、orking load load assigned by the design applied to the release hook of a launching appliance during launching of the maximum weight of the fully loaded liferaft it serves 3.4 recovering load load assigned by the design applied to the release hook of a launching appliance during recovering of the max
21、imum weight of the non-loaded liferaft it serves 3.5 maximum working load of winch maximum load assigned by the design held by the falls at the winch drum when the launching appliance is launching or recovering the maximum working load ISO 2011 All rights reserved 13.6 hoisting load of winch load as
22、signed by the design held by the falls at the winch drum when the launching appliance is hoisting the recovering load 3.7 davit major structure of the launching appliance, generally composed of frame, davit arm and fittings, etc. 3.8 winch mechanism of the launching appliance used for launching and
23、recovering the liferaft 3.9 turning device device of the launching appliance used for slewing or swinging the davit arm so as to bring the liferaft from inboard to outboard or vice versa 3.10 automatic release hook hook used for suspending the liferaft with the function of lowering and automatically
24、 releasing the liferaft when waterborne 4 Performance 4.1 A launching appliance shall depend only on manpower, gravity or stored mechanical power that is independent of the ships power supplies to safely turn out the non-loaded liferaft it serves from inboard to full outboard, ready for embarking an
25、d lowering the liferaft with the ship against a trim of up to 10 and list of up to 20 either way. 4.2 A launching appliance shall not depend on any means other than gravity or stored mechanical power independent of the ships power supplies to lower the liferaft it serves with the ship against a trim
26、 of up to 10 and list of up to 20 either way. 4.3 A launching appliance shall be capable of safely lowering the liferaft in a controlled manner, and the speed at which the liferaft is lowered to the water shall conform to Table 1. 4.4 The loose gears and automatic release hook shall have sufficient
27、total weight to overcome the friction in the davit reeving system, so as to lower freely the non-loaded release hook (referred to hereinafter as “non-loaded hook”). 4.5 A launching appliance shall be capable of manually recovering a non-loaded liferaft from the water to the deck with the ship on an
28、approximately even keel. 4.6 Where a launching appliance serves to launch several liferafts, a manually operated means for the rapid recovery of the non-loaded hook shall be provided; it shall be ensured that all the liferafts it serves capable of being lowered are brought to the water within 30 min
29、 for a passenger ship or 10 min for a cargo ship. In order to quickly bring the non-loaded hook to the next liferaft, the launching appliance shall be provided additionally with a recovery pulling line. ISO 13122:2011(E)2 ISO 2011 All rights reservedTable 1 Liferaft lowering speed Condition of lifer
30、aft Limit Lowering speed S Fully loaded liferaft Lower limit S = 0,4 + 0,02 H where S is the lowering speed in metres per second (m/s); H is the height in metres from the davit head to the waterline with the ship at the lightest seagoing condition, without consideration of trim and list given in 4.1
31、, and with the davit arm in the full outboard position. Regardless of the values obtained using this equation, the maximum values shall not exceed 1 m/s, unless otherwise stipulated by the relevant authority. Upper limit 1,3 m/s, unless otherwise stipulated by the relevant authority Non-loaded lifer
32、aft Lower limit 0,1 m/s, unless otherwise stipulated by the relevant authority 5 Design 5.1 A launching appliance shall be constructed using materials that will not be damaged in stowage throughout an air temperature range of 30 C to +65 C. 5.2 All materials exposed to weather shall possess excellen
33、t resistance to corrosion and deterioration, or shall be protected by galvanizing or other effective means. 5.3 The major structural components, such as davit arm, frame and sheave block, shall be made from materials such as steel plates, tubes or profiled bar that meet the requirements for seagoing
34、 conditions and have satisfactory weldability. Their minimum thickness shall be not less than 6 mm, unless they are of stainless materials with sea-water corrosion resistance. 5.4 Loose gears such as lifting chains, shackles and eye plates shall be made of ductile materials; grey iron castings shall
35、 not be used. 5.5 A launching appliance shall be designed to have the minimum safety factors in accordance with Table 2, on the basis of the maximum load applied to those major parts and corresponding to the ultimate strength of their materials. Table 2 Minimum safety factors Launching appliance par
36、ts Minimum safety factor Loose gears, falls, release hook 6 Davit arm, frame and their fittings 4,5 Winch, turning device 4,5 5.6 A launching appliance shall remain effective under the condition of icing. 5.7 Launching appliances shall be constructed so as to reduce routine maintenance to a minimum.
37、 All parts requiring regular maintenance shall be readily accessible and easily maintained by the ships crew. ISO 13122:2011(E) ISO 2011 All rights reserved 36 Construction 6.1 General A launching appliance generally consists of loose gears, davit, turning gear, winch and automatic release hook, etc
38、. It may be specifically designed for launching and recovering the liferaft, or as a combined launching appliance for multi-purpose functions, as long as those functions do not interfere with each other. Whatever the design, all relevant requirements for launching or recovering the liferaft are to b
39、e met by the launching appliance for conformance with this International Standard. Launching appliances shall be ready for immediate use at all times. 6.2 Loose gears 6.2.1 The falls used for hoisting and lowering the liferaft shall be rotation-resistant and of galvanized steel wire rope or others h
40、aving high resistance to corrosion. 6.2.2 Falls shall be long enough so that at least three dead turns of rope remain on the winchs drum after the liferaft has been successfully lowered to the water, with the ship in its lightest seagoing condition and under the unfavourable conditions of a trim of
41、up to 10and list of up to 20 either way. 6.2.3 The sheave diameter at the bottom of the sheave groove shall be at least 12 times the diameter of the falls, and the depth of the sheave groove shall be at least 1,5 times the diameter of the falls. A sheave cover with a small clearance between cover an
42、d sheave shall be provided to prevent the falls from coming out of the sheave groove. 6.3 Davit 6.3.1 During turning-out of the davit to the full outboard position and with the ship under the unfavourable conditions of a trim of up to 10 and list of up to 20 either side, the davit arm and frame and
43、their fittings shall be of sufficient strength to withstand a dynamic load caused by a lowering and braking of 1,1 times the maximum working load, and shall be able to withstand a static load of 2,2 times the maximum working load with the launching appliance in the worst-case trim and list condition
44、s. 6.3.2 The davit arm shall be so arranged that it has sufficient outreach to successfully lower the liferaft in a fully inflated condition to the water. 6.4 Turning device 6.4.1 The turning device may be designed to be power-driven or to be driven by stored mechanical power or manpower; neverthele
45、ss, all launching appliances shall be fitted with a turning device that can at least be driven by manpower. In turning out, the davit arm shall bring the non-loaded liferaft it serves to full outboard with the ship under unfavourable conditions of trim and list. 6.4.2 Where the turning device is pow
46、er-driven, it shall be fitted with a brake in order to stop the turning davit arm at the prescribed position with the ship under unfavourable conditions of trim and list. ISO 13122:2011(E)4 ISO 2011 All rights reserved6.5 Winch 6.5.1 A winch may be designed to be electrically, hydraulically or pneum
47、atically powered, or to be driven by manpower. 6.5.1.1 Where driven by manpower, the rotation radius of the handles or hand wheels of the winch shall be not more than 500 mm and the continuance force for hand operation shall not exceed 160 N, unless otherwise stipulated by a relevant authority. 6.5.
48、1.2 Electrical drives and control equipment shall conform to the requirements of IEC 60092. Deck-mounted enclosures of motors and controller shall conform to IEC 60529, IP56. 6.5.1.3 Hydraulic drives and control equipment shall conform to the requirements of ISO 4413. System nominal pressures shall
49、be selected from ISO 2944, and the drive shall operate satisfactorily at a pressure 10 % below the selected nominal pressure. 6.5.1.4 Pneumatic drives and control equipment shall conform to the requirements of ISO 4414. System nominal pressures shall be selected from ISO 2944, and the drive shall operate satisfactorily at a pressure 10 % below the selected nominal pressure. 6.5.2 Each winch shall be fitted with brakes capable of stopping the descent of a fully loaded liferaft at the maximum lowering speed and of holding i
