ABS 45 NOTICE 2-2014 GUIDE FOR CERTIFICATION OF CONTAINER SECURING SYSTEMS.pdf

1、 ABSGUIDE FOR CERTIFICATION OF CONTAINER SECURING SYSTEMS .2010 1 GUIDE FOR CERTIFICATION OF CONTAINER SECURING SYSTEMS NOVEMBER 2010 NOTICE NO. 2 April 2014 The following Rule Changes were approved by the ABS Rules Committee on 31 March 2014 and become EFFECTIVE AS OF 1 APRIL 2014. (See http:/www.e

2、agle.org for the consolidated version of the Guide for Certification of Container Securing Systems 2010, with all Notices and Corrigenda incorporated.) Notes - The date in the parentheses means the date that the Rule becomes effective for new construction based on the contract date for construction.

3、 (See 1/5.5) SECTION 2 GENERAL (Revise Subsection 2/1, as follows:) 1 Scope (1 April 2014) This Guide sets forth requirements for the certification of the initial installation of container securing systems and lashing calculation computer software aboard vessels classed by ABS. It is to be clearly u

4、nderstood that no representation is made as to the ability of any onboard container to withstand the loads allowed. The allowable loads have been derived from successful usage over a number of years and may exceed the design loads set forth in International Organization for Standardization (ISO) Sta

5、ndard 1496-1:1990, American National Standards Institute (ANSI) Standard MH 5.1.1M, the ABS Rules for Certification of Cargo Containers, and similar standards. It is the responsibility of the client, shipowner, or charterer to ascertain that the containers used in the system can withstand the loads

6、applied to them. It is also to be understood that no representation is made as to the absolute validity of the values for dynamic forces from roll, pitch, and heave, vessel vertical center of gravity, container spring constants, and lashing spring constants contained in this Guide. It is the respons

7、ibility of the client, shipowner, or charterer to establish the validity of the values for the above items used in the system. A vessel classed by ABS having an installed container securing system certified by ABS may be distinguished by the additional notation CSC in the Record for unrestricted ser

8、vice. A computer lashing program to calculate forces acting on the container securing arrangements and maximum permissible stack weights for unrestricted service may be installed onboard a vessel, see 9/3.9.4. An onboard computer lashing program installed on a vessel assigned the CSC notation shall

9、be certified in accordance with Appendix 4 of this Guide and the vessel assigned the notation CLP for computer lashing program. A vessel having an installed container securing system certified by ABS for operation in specific voyage trade routes where reduced accelerations are used in the calculatio

10、n of forces acting on the container securing system, see 6/3.7.3, shall have an onboard certified computer lashing program, which is mandatory. Such operation may have a different maximum number and arrangement of containers than the unrestricted voyage trade. The suffix V shall be added to the comp

11、uter lashing program notation, CLP-V, to signify the certification of the computer lashing programs capability to address both unrestricted service and specific voyage routes. Notice No. 2 April 2014 2 ABSGUIDE FOR CERTIFICATION OF CONTAINER SECURING SYSTEMS .2010 Typically, vessel stow planning is

12、performed with an onboard computer lashing program that can calculate the maximum permissible stack weights for each individual stack based on the provided container lashing arrangements, and then the permissible stack weights are compared against the actual planned stack weights. Should an actual s

13、tack weight exceed the permissible, corrective action is to be taken by either reducing the stack weight or modifying the lashing arrangement accordingly. Consideration regarding the use of the unrestricted lashing and stack weights or the voyage route-specific service lashing and stack weights rest

14、 with the vessels Master depending on the anticipated conditions to be encountered during the voyage. The following table illustrates the general relationships between the CSC, CLP and CLP-V notations: Container Securing Systems CSC Computer Lashing Program Unrestricted Service Unrestricted Service

15、and Additional Route Specific Service CLP (mandatory if computer lashing program is installed) CLP-V (mandatory for route specific service) SECTION 3 CONTAINER CHARACTERISTICS (Revise Section 3, Table 3, as follows:) TABLE 3 Design Loads on Containers and Container Fittings (1 April 2014) Nominal Co

16、ntainer Size: 20-ft Container 40-ft Container Maximum Gross Weight: 30.48 tonnes 30 Lton 30.48 tonnes 30 Lton Units: kN Ltf kN Ltf End Wall Racking 150 15.0 150 15.0 Side Wall Racking 125 12.5 125 12.5 Corner Post Compression 848 85.1 848 85.1 Transverse Securing Force on Corner Fitting: Top Corner

17、Tension 250 25.1 250 25.1 Compression 250 25.1 250 25.1 Bottom Corner Tension 350 35.1 350 35.1 Compression 350 35.1 350 35.1 Longitudinal Securing Force on Corner Fitting: Top Corner Tension 100 10.0 100 10.0 Compression 50 5.0 50 5.0 Bottom Corner Tension 200 20.1 300 30.1 Compression 200 20.1 300

18、 30.1 Lashing Force on Top and Bottom Corner Fitting (See Section 3, Figure 1) Vertical 300 30.1 300 30.1 Horizontal 150 15.0 150 15.0 Vertical Tension on Top Corner Fitting 250 25.1 250 25.1 Vertical Tension on Bottom Corner Fitting 250 25.1 250 25.1 Notice No. 2 April 2014 ABSGUIDE FOR CERTIFICATI

19、ON OF CONTAINER SECURING SYSTEMS .2010 3 SECTION 6 SECURING SYSTEM DESIGN PRINCIPLES 3 Design Loads (Revise first four paragraphs of Paragraph 6/3.7, as follows:) 3.7 Accelerations (1 April 2014) Containers and their securing systems shall be capable of withstanding the forces generated by the follo

20、wing load combinations for unrestricted service: Condition A: The maximum roll condition generating maximum across-the-deck accelerations, expected in quartering stern or beam seas. Condition B: The maximum pitch condition generating maximum normal-to-deck accelerations, expected in head or near hea

21、d seas. The designer is to ensure that the stowage system satisfies all of the strength criteria for both Condition A and Condition B accelerations. For conventional lashed systems on the deck with containers having properties as listed in Section 3, Table 3, Condition A governs and Condition B need

22、 not be evaluated. For containers stowed in cell guides, Condition B governs and Condition A need not be evaluated. For other configurations, including block stowage in the holds of bulk carriers, Condition A and Condition B are to be evaluated. (Following text remains unchanged.) (Revise definition

23、 of a0, as follows:) a0= common acceleration parameter, in gs = 0.2012 for B 32.2 m (B 106 ft) = 0.2012 + (0.0618 GM 0.2125)*(B 32.2)/7.8 for 32.2 m 32.2 m 0.8 m 4.0 m 37 m 1.0 m 5.0 m 40 m 1.0 m 6.0 m 42 m 1.0 m 7.0 m 48 m 1.0 m 8.0 m 51 m 1.0 m 9.0 mA separate supporting document is to be prepared

24、 that describes the computer lashing program and assumptions, and provides calculation examples as described in Appendices 4 and 5. This document is to be submitted for review when the Manual is submitted for review and approval. The supporting document is to also be placed on board the vessel as ba

25、ckground for the crew. The container weight limits given by the computer lashing program are to be strictly followed in practice. APPENDIX 2 SHIPBOARD SAFETY SYSTEMS (Revise Subsection A2/9, Item ii), as follows:) ii) (1 April 2014) The crane is to be equipped with a remote shut-off switch that can

26、stop trolley, gantry, and hoist functions. The shut-off switch is to be under the control of the personnel operating the gantry crane; and Notice No. 2 April 2014 6 ABSGUIDE FOR CERTIFICATION OF CONTAINER SECURING SYSTEMS .2010 APPENDIX 3 MAPS OF ROUTE-SPECIFIC TRADES (1 April 2014) (Add new Appendi

27、x 3, as follows:) The specific trade routes in 6/3.7.3 are shown in the following maps. 1 Asia Europe 2 Pacific Atlantic Notice No. 2 April 2014 ABSGUIDE FOR CERTIFICATION OF CONTAINER SECURING SYSTEMS .2010 7 3 North Pacific 4 North Sea Mediterranean Notice No. 2 April 2014 8 ABSGUIDE FOR CERTIFICA

28、TION OF CONTAINER SECURING SYSTEMS .2010 5 North Atlantic 6 Asia South America (West Coast) Notice No. 2 April 2014 ABSGUIDE FOR CERTIFICATION OF CONTAINER SECURING SYSTEMS .2010 9 7 South America (East Coast) Africa 8 Africa East Asia Notice No. 2 April 2014 10 ABSGUIDE FOR CERTIFICATION OF CONTAIN

29、ER SECURING SYSTEMS .2010 9 Europe (Rotterdam) Africa Notice No. 2 April 2014 ABSGUIDE FOR CERTIFICATION OF CONTAINER SECURING SYSTEMS .2010 11 10 Europe (Rotterdam) South America (Brazil) Notice No. 2 April 2014 12 ABSGUIDE FOR CERTIFICATION OF CONTAINER SECURING SYSTEMS .2010 11 US (NYC) South Ame

30、rica (Brazil) APPENDIX 4 ONBOARD COMPUTERS FOR LASHING CALCULATIONS (1 April 2014) (Add new Appendix 4, as follows:) 1 General Container lashing calculation software is used to calculate and verify that the container securing arrangements are in compliance with the applicable strength requirements a

31、nd acceptance criteria in this Guide. The software is at least to include all information and perform all calculations or checks as necessary for compliance with the applicable container securing requirements. 3 General Requirements A users manual is to be provided for the lashing software and kept

32、onboard. The onboard computer for lashing calculations is ship specific equipment and the results of the calculations are only applicable to the vessel for which it has been certified. In case of modifications implying changes in the ships design or container securing arrangement, the software is to

33、 be modified accordingly and re-certified. Notice No. 2 April 2014 ABSGUIDE FOR CERTIFICATION OF CONTAINER SECURING SYSTEMS .2010 13 The calculation program is to be able to calculate for any container bay whether the stowage of containers and securing arrangements are within the approval limits, an

34、d show the obtained values and the conclusions (criteria fulfilled or not fulfilled). The calculation program is to include a graphical representation of the containers and lashing arrangements. For each container arrangement the software output should indicate: GM value Roll period Maximum roll ang

35、le Container racking stiffness Lashing rod stiffness Position of each stack Gross container weight Actual stack weights Lashing arrangement Transverse, vertical and longitudinal accelerations of each container Lifting forces Lashing forces Transverse and longitudinal racking forces Corner post loads

36、 Pressure loads at bottom 5 Certification of Computer Software A general description of the computer lashing program and a users manual are to be submitted for review. Container lashing test cases that show the following results are also to be submitted for review: Complete lashing cases required by

37、 9/3.9.1 of this Guide A test case resulting in unacceptable excessive stack weight A test case resulting in unacceptable excessive lash forces A test case resulting in unacceptable excessive corner post compression A test case resulting in unacceptable excessive racking forces Mixed 20 ft and 40 ft container stow For a ship assigned the route-specific CLP-V notation, additional cases for the specified routes are to be submitted. Test cases for a minimum of three bays are to be submitted for each route. (Renumber existing Appendix 3 as Appendix 5.)