IMO IA275E-2012 CODE OF SAFE PRACTICE FOR SHIPS CARRYING TIMBER DECK CARGOES 2011.pdf

1、IA275Ewww.imo.orgThe Code of Safe Practice for Ships carrying Timber Deck Cargoes, 2011 (2011 TDC Code) was adopted by resolution A.1048(27) at the twenty-seventh session of IMOs Assembly in November 2011. This Code revises and updates the previous Code adopted in 1991 by resolution A.715(17). The 2

2、011 TDC Code is non-mandatory and applies to all ships of 24 m or more in length carrying a timber deck cargo. The Code aims to ensure that stowage and cargo securing arrangements for timber deck cargoes enable a safe yet rational securing of the cargo so that it is satisfactorily prevented from shi

3、fting. 2011 TDC Code also includes alternative design principles, taking into account the acceleration forces cargo may be subjected to throughout the voyage.2012 EDITIONCODE OF SAFE PRACTICE FOR SHIPS CARRYINGTIMBER DECKCARGOES2011London, 2012First published in 1974 by the INTERNATIONAL MARITIME OR

4、GANIZATION 4 Albert Embankment, London SE1 7SR www.imo.orgPrinted by CPI Group (UK) Ltd, Croydon, CR0 4YYISBN: 978-92-801-1549-9IMO PUBLICATIONSales number: IA275ECopyright International Maritime Organization 2012All rights reserved. No part of this publication may be reproduced, stored in a retriev

5、al system, or transmitted in any form or by any means, without prior permission in writing from the International Maritime Organization.Reproduction and/or translation rights may be available for this title. For further details please contact IMO Publishing at copyrightimo.org.This publication has b

6、een prepared from official documents of IMO, and every effort has been made to eliminate errors and reproduce the original text(s) faithfully. Readers should be aware that, in case of inconsistency, the official IMO text will prevail.iiiContentsForeword . 1Resolution A.1048(27) Code of Safe Practice

7、 for Ships carrying Timber Deck Cargoes, 2011 (2011 TDC Code) . 3Preface 5Chapter 1 General . 71.1 Purpose 71.2 Application . 71.3 Definitions 8Part A Operational requirementsChapter 2 General recommendations on stowage and securing of timber deck cargoes . 112.1 Goals 112.2 Pre-loading operation .

8、112.3 Permitted loading weights on decks and hatch covers . 122.4 Stability 132.5 Load line . 132.6 Timber freeboard . 142.7 Visibility . 142.8 Work safety and work environment aspects . 142.9 Stowage 162.10 Securing . 172.11 Post-loading operation . 23Page2011 TDC Codeiv2.12 Voyage planning . 242.1

9、3 Cargo securing manual 25Chapter 3 Visibility . 27Chapter 4 Physical properties of timber cargoes . 294.1 Stowage factors 294.2 Friction factors . 304.3 Plastic covers 314.4 Package marking . 324.5 Water absorption . 324.6 Weight of ice 324.7 Rigidity of sawn wood packages . 32Part B Design of carg

10、o securing arrangementsChapter 5 Design principles . 355.1 General 355.2 Uprights . 375.3 Loose or packaged sawn wood 385.4 Logs, poles, cants or similar cargo 395.5 Testing, marking, examination and certification 395.6 Lashing plans 39Chapter 6 Alternative design principles 416.1 General requiremen

11、ts . 416.2 Accelerations and forces acting on the cargo 426.3 Physical properties of timber deck cargoes . 436.4 Safety factors 446.5 Design criteria for different securing arrangements 45Chapter 7 Uprights . 53Chapter 8 Denotations used . 55PageContentsvPageAnnex A Guidance in developing procedures

12、 and checklists . 57A.1 Preparations before loading of timber deck cargoes . 57A.2 Safety during loading and securing of timber deck cargoes . 60A.3 Securing of timber deck cargoes . 62A.4 Actions to be taken during the voyage . 64A.5 Safety during discharge of timber deck cargoes 67Annex B Samples

13、of stowage and securing arrangements . 69B.1 Example calculation: top-over lashings . 69B.2 Example calculation: bottom blocking and top-over lashings 71B.3 Example calculation: loop lashings 74B.4 Example calculation: uprights for packages of sawn wood 77B.5 Example calculation: uprights for round

14、wood . 81B.6 Example calculation: frictional securing of transversely stowed round wood . 90B.7 Maximum bending resistance in common profiles for uprights . 92Annex C Instruction to a master on calculation of mass change of a timber deck cargo due to water absorption . 95Annex D References 971Forewo

15、rdThe Code of Safe Practice for Ships carrying Timber Deck Cargoes, 2011 (2011 TDC Code) was adopted at the twenty-seventh session of IMOs Assembly in November 2011 by resolution A.1048(27). This Code revises and updates the previous Code adopted in 1991 by resolution A.715(17). The 2011 TDC Code is

16、 non-mandatory and applies to all ships of 24 m or more in length carrying a timber deck cargo. The Code aims to ensure that stowage and cargo securing arrangements for timber deck cargoes enable a safe yet rational securing of the cargo so that it is satisfactorily prevented from shifting. The 2011

17、 TDC Code also includes alternative design princi-ples, taking into account the acceleration forces cargo may be subjected to throughout the voyage.3Resolution A.1048(27) adopted on 30 November 2011 Code of Safe Practice for Ships carrying Timber Deck Cargoes, 2011 (2011 TDC Code)The Assembly,Recall

18、ing Article 15(j) of the Convention on the International Maritime Organization regarding the functions of the Assembly in relation to regula-tions and guidelines concerning maritime safety,Recalling also its adoption, by resolution A.715(17), of the Code of Safe Practice for Ships carrying Timber De

19、ck Cargoes, 1991,Recognizing the need to improve the provisions contained in the Code in the light of experience gained,Having considered the recommendations made by the Maritime Safety Committee at its eighty-ninth session,1. Adopts the Code of Safe Practice for Ships carrying Timber Deck Cargoes,

20、2011 (2011 TDC Code), as set out in the annex to the present resolution;2. Recommends Governments to use the provisions of the 2011 TDC Code as a basis for relevant safety standards;3. Authorizes the Maritime Safety Committee to amend the Code as necessary in the light of further studies and experie

21、nce gained from the implementation of the provisions contained therein;4. Revokes resolution A.715(17).5PrefaceThe Code of Safe Practice for Ships carrying Timber Deck Cargoes was first developed by the Organization in 1972 and subsequently amended in 1978.The Code was revised by IMO resolution A.71

22、5(17), Code of Safe Practice for Ships carrying Timber Deck Cargoes, 1991, which was adopted on 6 November 1991.This Code is based on the previous Code, which has been revised and amended in order to reflect the capability of todays ships and the equipment available on board and also anticipating ex

23、pected future innovations.This Code is designed to assist:.1 shipowners, charterers, operating companies and ships crews;.2 port industries, shippers and pre-packaging organizations, which are involved in preparation, loading, and stowing of timber deck cargoes; and.3 Administrations, manufacturers

24、and designers of ships and equipment associated with the carriage of timber deck cargoes and those developing cargo securing manuals.This Code is directed primarily at providing recommendations for the safe carriage of timber deck cargoes.Status of referencesThe references given in this consolidated

25、 text do not form part of the Code but are inserted for ease of reference.7Chapter 1 General1.1 Purpose1.1.1 The purpose of the Code is to ensure that timber deck cargoes are loaded, stowed and secured to prevent, as far as practicable, throughout the voyage, damage or hazard to the ship and persons

26、 on board as well as loss of cargo overboard.(1)1.1.2 The Code provides:.1 practices for safe transportation;.2 methodologies for safe stowage and securing;.3 design principles for securing systems;.4 guidance for developing procedures and instructions to be included in ships cargo securing manuals

27、on safe stowage and securing; and.5 sample checklists for safe stowage and securing.1.2 Application1.2.1 The provisions of this Code apply to all ships of 24 m or more in length, carrying a timber deck cargo. This Code will be effective from 30 November 2011.1.2.2 Cargo securing of timber deck cargo

28、es should be in accordance with the requirements in the ships cargo securing manual (CSM), based on the principles in chapter 5 or chapter 6 of part B of this Code.1.2.3 The Master should note that national requirements may exist which may restrict the application of either chapter 5 or chapter 6, a

29、nd these may also require third party inspections to ensure that the cargo has been properly secured according to the ships cargo securing manual.1.2.4 Cargo securing manuals for timber deck cargoes, approved follow-ing the implementation date of this Code, should meet the contents of this Code. Exi

30、sting cargo securing manuals approved under the previous Timber Deck Cargo Code (resolution A.715(17) may remain valid.2011 TDC Code81.3 Definitions1.3.1 The following definitions apply to this Code:General expressions.1 Administration means the Government of the State whose flag the ship is entitle

31、d to fly.2 Company means the Owner of the ship or any other organiza-tion or person such as the Manager, or the Bareboat Charterer, who has assumed the responsibility for operation of the ship from the Ship owner and who, on assuming such responsi-bility, has agreed to take over all duties and respo

32、nsibilities imposed by SOLAS.(2).3 Load Lines Convention means the International Convention on Load Lines, 1966, or the 1988 Protocol relating thereto, as applicable.4 Organization means the International Maritime Organization (IMO).5 Port industries means the port facilities and/or stevedoring comp

33、anies serving ships engaged in the stowage of timber deck cargoes.6 Shipper means any person, organization or Government which prepares or provides a consignment for transport.(3).7 SOLAS means the International Convention for the Safety of Life at Sea, 1974, as amended.8 2008 IS Code means the Inte

34、rnational Code on intact stabil-ity, 2008.9 Restricted sea area means any sea area in which the weather can be forecast for the entire sea voyage or shelter can be found during the voyage.Cargo related expressions.10 Cant means a log which is “slab-cut”, i.e., ripped lengthwise so that the resulting

35、 thick pieces have two opposing, parallel flat sides and, in some cases, a third side which is sawn flat.Chapter 1 General9.11 Non-rigid cargo means sawn wood or lumber, cants, logs, poles, pulpwood and all other types of loose timber or timber in packaged forms not fulfilling specified strength req

36、uire-ment, as defined in section 4.7.12 Rigid cargo package means sawn wood or lumber, cants, logs, poles, pulpwood and all other types of timber in packaged forms, fulfilling specified strength requirement, as defined in s e c tion 4.7.13 Round wood means parts of trees that have not been sawn on m

37、ore than one long side. The term includes, among others, logs, poles and pulpwood in loose or packed form.14 Sawn wood means parts of trees that have been sawn so that they have at least two parallel flat long sides. The term includes, among others, lumber and cants in loose or packed form.15 Timber

38、 is used as a collective expression used for all types of wooden material covered by this Code, including both round and sawn wood but excluding wood pulp and similar cargo.Technically related expressions.16 Blocking device means physical measures to prevent sliding and/or tipping of cargoes and/or

39、collapse of stow.17 Lashing plan means a sketch or drawing showing the required number and strength of securing items for the timber deck cargo to obtain safe stowage and securing of timber deck cargoes.18 Timber deck cargo means a cargo of timber carried on an uncovered part of a freeboard or super

40、structure deck.19 Timber load line means a special load line assigned to ships complying with certain conditions set out in the International Convention on Load Lines.20 Stowage Factor (SF) means the volume occupied by one tonne of a cargo when stowed and separated in the accepted manner.21 Weather

41、deck means the uppermost complete deck exposed to weather and sea.2011 TDC Code10.22 Reeving means the process where a rope, chain or any other type of lashing can freely move through a sheave or over a fulcrum such as a rounded angle piece, in such a manner so as to minimize the frictional effect o

42、f such movement.23 Height of cargo means the distance from the base of the deck cargo stow to the highest part of the cargo.11Part A Operational requirementsChapter 2 General recommendations on stowage and securing of timber deck cargoes2.1 Goals2.1.1 The stowage and cargo securing arrangements for

43、timber deck cargoes should enable a safe yet rational securing of the cargo so that it is satisfactorily prevented from shifting by collapsing, sliding or tipping in any direction, taking into account the acceleration forces the cargo may be subjected to throughout the voyage in the worst sea and we

44、ather conditions which may be expected.2.1.2 This chapter lists measures and factors that should be taken under consideration in order to achieve such level of cargo securing.2.1.3 Procedures should be established for the preparation of plans and instructions, including checklists as appropriate, fo

45、r key shipboard opera-tions.(5)Guidance is provided in annex A to assist the development of such checklists.2.2 Pre-loading operation2.2.1 Prior to loading the vessel, relevant cargo information,(4)as defined in chapter 4 of this Code, should be provided by the shipper, according to the custom of th

46、e trade.2.2.2 The master of the vessel should study the relevant cargo informa-tion and take the precautions necessary for proper stowage, securing and safe carriage of the cargo as defined in this Code and as prescribed in the vessels cargo securing manual.2011 TDC Code122.2.3 Prior to loading, the

47、 stevedoring company should be made aware of specific requirements according to the ships cargo securing manual regard-ing stowage and securing of timber deck cargoes.2.2.4 During loading of deck cargo the master should ensure that all tanks are maintained in such a condition that free surface effec

48、ts are minimized. Ballast tanks should as far as practicable be either full or empty and ballast movement during loading operations should be avoided.2.2.5 Before timber deck cargo is loaded on any area of the weather deck:.1 hatch covers and other openings to spaces below that area should be secure

49、ly closed and battened down;.2 air pipes and ventilators should be effectively protected and check-valves or similar devices should be examined to ascer-tain their effectiveness against the entry of water;.3 objects which might obstruct cargo stowage on deck should be removed and safely secured in places appropriate for storage;.4 the condition of friction-enhancing arrangements, where fitted, should be checked;.5 accumulations of ice and snow on such area should be removed;.6 it is normally preferable to have all deck lashings, uprig