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1、I:CIRCMSC011205.doc INTERNATIONAL MARITIME ORGANIZATION 4 ALBERT EMBANKMENT LONDON SE1 7SR Telephone: 020 7587 3152 Fax: 020 7587 3210 IMO E Ref. T4/4.01 MSC.1/Circ.1205 26 May 2006 GUIDELINES FOR DEVELOPING OPERATION AND MAINTENANCE MANUALS FOR LIFEBOAT SYSTEMS 1 The Maritime Safety Committee, at i
2、ts eighty-first session (10 to 19 May 2006), taking into account the number of casualties with lifeboat systems, further recognizing the need to improve manuals for operation and maintenance of lifeboat systems, and having considered proposals by the Sub-Committee on Fire Protection at its fiftieth
3、session, approved the Guidelines for developing operation and maintenance manuals for lifeboat systems, as set out in the annex. 2 Member Governments are invited to bring the annexed Guidelines to the attention of all parties concerned with their application, as appropriate. * MSC.1/Circ.1205 I:CIRC
4、MSC011205.doc ANNEX GUIDELINES FOR DEVELOPING OPERATION AND MAINTENANCE MANUALS FOR LIFEBOAT SYSTEMS 1 Scope and purpose of the guidelines Seafarers often change ships and sometimes are not familiar with the lifeboats on their ships. Casualties with lifeboat systems are often caused by poor understa
5、nding of the lifeboat systems, especially release gear systems. User-friendliness of manuals for lifeboat systems is, therefore, important to help prevent casualties. The purpose of these guidelines is to encourage development of user-friendly manuals for operation and maintenance of lifeboat system
6、s including launching appliances. These manuals should be easy to understand. The guidelines demonstrate the appropriate level of detail and use of illustrations in explaining the safe use of critical systems. Manufacturers of lifeboats and launching/recovery appliances are invited to make manuals e
7、asy to understand, taking into account these guidelines. The use of video materials in conjunction with printed manuals can be an effective tool for mariners who may not be inclined to read a manual. These guidelines are not applicable to the emergency instructions required by SOLAS regulation III/8
8、, operating instructions such as posters and signs required by SOLAS regulation III/9 or other brief instructions for operation of lifeboats. These guidelines are for manuals to be carried on ships for use by seafarers, and accordingly the section on weekly and monthly inspection and maintenance doe
9、s not refer to detailed maintenance/repair work. Detailed maintenance/repair work should be conducted by the manufacturers representative or a person appropriately trained and certified by the manufacturer for the work in accordance with MSC.1/Circ.1206. 2 Collaboration of manufacturers of the lifeb
10、oat and the launching appliance A manual for a lifeboat system including launching appliance should be developed with the collaboration of manufacturers of the lifeboat and the launching appliance and preferably be a single document. As a minimum, the use of different words for the same gear/parts o
11、f the lifeboat system should be eliminated by the collaboration of manufacturers of the lifeboat and the launching appliance to prevent misunderstanding by seafarers. Hereafter, these guidelines assume a manual for a lifeboat system includes the launching appliance as a minimum, but separate lifeboa
12、t, release gear, and launching appliance manuals may be effective if adequately co-ordinated and using the same style of presentation per these guidelines. 3 Contents of a manual for a lifeboat system 3.1 Items to be included An operation and maintenance manual for a lifeboat system should include,
13、as a minimum, the following items: .1 overview and specification of the lifeboat system; .2 explanation of the structure and working principle of the major parts of the lifeboat system including release gear systems; MSC.1/Circ.1205 ANNEX Page 2 I:CIRCMSC011205.doc .3 operation of the lifeboat syste
14、m; and .4 routine inspection and maintenance of the lifeboat system. 3.2 Organization, description and layout of manual 3.2.1 Outline It is recommended that a manual for a lifeboat system be developed with the following major divisions: 1 General description of the whole lifeboat system. 2 Method of
15、 checking proper closure of release hooks. 3 Launching operation. 4 Recovery operation. 5 On-load/off-load release gear. 6 Inspection and maintenance. 3.2.2 Explanation of major components and their function The structure and working principle of the lifeboats major components, in particular the on-
16、load/off- load release gear, should be explained using figures and preferably three-dimensional perspectives. In addition, the operation of the release gear should be described sequentially, using short phrases written in the active voice. 3.2.3 Operation of lifeboat system including release gear sy
17、stems The operation of the lifeboat system should be described using the following elements: .1 flow of the operation should be explained; .2 detail of operation should be explained with figures. Operation and relevant movement of the parts of the release gear should be described with illustrations/
18、photos, preferably using annotations and arrows to show direction of movement; and .3 hazards, precautions and notes should be identified with symbols specific to the level of risk. As an example of the various levels of risk and the appropriate associated symbols, the following are recommended: .1
19、For the highest level of risk, such as in the explanation of “on-load release operation”, the following symbol (red background) should be used with a warning statement similar to the following: MSC.1/Circ.1205 ANNEX Page 3 I:CIRCMSC011205.doc Warning This operation releases the lifeboat and may resu
20、lt in the lifeboat dropping and causing death or serious injury if released too soon. Note: International standard symbols (ISO 3864-1 and ISO 7010) are recommended where appropriate, but since marine use is excluded from the scope of these standards, and they fail to indicate different levels of ri
21、sk, the “graduated” symbols are recommended. .2 For the second highest level of risk, such as in the explanation of “davit arm stop release operation”, the following symbol (yellow background) should be used with a caution statement similar to the following: Caution Incorrect or incomplete resetting
22、 may cause the lifeboat to drop resulting in death or serious injury. .3 For less critical mandatory instructions the following symbol (blue background) should be used with appropriate instruction: Mandatory Place the manual gripe out of the way to prevent tangling round the lifeboat. . . . .4 Impor
23、tant notes may be emphasized with symbol and style of instructions similar to the following: Note In case the hook is not released by the above operations, confirm condition of each hook and whether the boat is waterborne or not. Even though the hooks cannot be released by the above mentioned off- l
24、oad release operation, the on-load release procedure, described in the following pages, is possible. .5 Prohibited actions should use the following symbol (coloured red) and style of instruction: Never Never enter lifeboat without ensuring complete closure of release hooks. Incomplete resetting of t
25、he release hooks can cause the lifeboat to drop and may result in the death of occupants. MSC.1/Circ.1205 ANNEX Page 4 I:CIRCMSC011205.doc 3.2.4 Inspection and maintenance The items for weekly and monthly inspection/maintenance and other inspection/maintenance should each be explained separately. 4
26、Improvement of user-friendliness of a manual 4.1 Use of figures/photographs Figures, preferably coloured, or photographs should be used as far as practicable to make manuals easy to understand. 4.2 Use of standard wording The following standard wording should be used to explain lifeboat systems wher
27、e provided, and for each of the applicable items illustrations should be provided to show the items and their location in the lifeboat or on the ship. The use of alternative terms for variety should be avoided, except to further define or clarify a term so that the reader never has to guess what ite
28、m or system is being discussed. .1 Davit/winch: .1 Auto releasing gripe .2 Davit arm .3 Davit arm stop .4 Davit remote control wire handle .5 Frame .6 Maintenance (hanging off) pennant attachment points, if provided .7 Manual gripe, if provided .8 Remote control wire .9 Winch manual brake safety pin
29、 .10 Winch hand crank handle .11 Winch centrifugal or lowering brake .12 Winch hand brake or stop brake lever .2 Freefall: .1 Roller or sliding pad .2 Sea lashing rope .3 Emergency release device .3 Release gear: .1 Hook control cable .2 Hook retainer (lock piece) .3 Hydrostatic interlock .4 Hydrost
30、atic interlock lever, if provided .5 Interlock (“mechanical protection” of on-load release) .6 Maintenance (hanging off) pennant attachment points, if provided .7 On-load release .8 Release handle MSC.1/Circ.1205 ANNEX Page 5 I:CIRCMSC011205.doc .9 Release handle “closed (locked)” and “open” positio
31、ns .10 Release handle “safety pin” .11 Release hook (hook unit) (fore and aft hooks) .12 Reset lever, if provided .13 Safety latch (keeper) .4 Suspension: .1 Foul weather recovery strops .2 Suspension block .3 Suspension link (lifting ring) .5 “Officer in charge” of lifeboat 5 Example of an operatio
32、n and maintenance manual for a lifeboat system An example of an operation and maintenance manual for a fire-protected lifeboat system is attached in the following pages just for reference. It demonstrates the suitable level of detail that should be expected for manuals. It should be noted that lifeb
33、oat systems are different from each other and some specifications in the example manual are not applicable to lifeboat systems of other types. The example attached at appendix is a model manual which is recommended as an example for developing specific manuals for lifeboat systems launched by falls,
34、 but the same general principles should be used for manuals for freefall lifeboat systems. * * * MSC.1/Circ.1205 ANNEX Page 6 I:CIRCMSC011205.doc APPENDIX EXAMPLE OPERATION AND MAINTENANCE MANUAL FOR A LIFEBOAT SYSTEM* Table of contents 1 General 2 Method of checking proper closure of release hooks
35、3 Launching operation 3.1 Preparation before launching 3.2 Setting painter 3.3 Release of safety pin for winch hand brake lever 3.4 Release of davit arm stop 3.5 Boarding the lifeboat 3.6 Launching procedure 3.7 Release gear operation 3.8 Painter release and lifeboat operation 4 Recovery operation 4
36、.1 Resetting procedure of release hook 4.2 Recovery procedure 4.3 Stowage procedure 5 On-load/off-load release gear system 5.1 General 5.2 Fore and aft hook units 5.3 Release handle unit 5.4 Hydrostatic interlock unit 6 Inspection and maintenance 6.1 General precautions 6.2 Inspection and maintenanc
37、e of lifeboat and release gear system 6.3 Inspection and maintenance of launching appliances (davits and winches) * Of a lifeboat being launched using falls and a winch, hereinafter referred to as a lifeboat. MSC.1/Circ.1205 ANNEX Page 7 I:CIRCMSC011205.doc 1 General The lifeboats are stored on the
38、boat davits on both sides of the ship. In case of emergency, the crew can board the lifeboat and escaped with the lifeboat directly from its stowage position. The launching appliance consists of a boat davit (davit arm, frame, platform, falls, suspension block, and gripes/lashing device) and a boat
39、winch (reduction gears, hand brake and centrifugal brake). Swinging out and lowering of the lifeboat can be controlled both from the inside of the lifeboat and at the ships deck. The lowering speed of the lifeboat can be controlled by operating the remote control wire inside the lifeboat or by opera
40、ting the remote control lever on the ships deck. Moreover, it is possible to suspend the lowering operation of the lifeboat at any height. Recovery of the lifeboat is performed by operating the boat winch with the push-button switch box. When the davit arm reaches a prescribed position, the boat win
41、ch is automatically stopped by the limit switch. After the activation of the limit switch, the boat winch is operated manually to wind up the lifeboat to its stowage position. The boat winch is provided with a safety device to prevent the reverse operation of the manual handle. The lifeboat is equip
42、ped with on-load/off-load release gear which complies with the requirements of the IMO Life-Saving Appliance (LSA) Code. The release gear system is equipped with a hydrostatic interlock system so that it will normally not release the hooks until the boat is waterborne. To avoid possible injury or de
43、ath, read this manual carefully before using the boat davit, the boat winch, and the on-load/off-load release gear. MSC.1/Circ.1205 ANNEX Page 8 I:CIRCMSC011205.doc Suspension Link Davit Arm Stop Handle Remote Control Wire Platform Auto Releasing Gripes Boat WinchHand Brake Lever Deck Operation Devi
44、ce Hand crank Handle Skate Boat Fall Wire Davit Arm Trigger Hook Limit Switch Frame Suspension Block Davit Horn Fig. 1.1 Lifeboat davit arrangement MSC.1/Circ.1205 ANNEX Page 9 I:CIRCMSC011205.doc Release Hook Duct Rudder Propulsion Engine Fuel Oil Tank Centre Bench Hook Control Cable Steering Wheel
45、 Entrance Hatch Interior LightLockerHead RestSeat Belt HatchCompass Release Handle Steering Seat Breather Valve Emergency Steering Lever PropellerStern Tube Hydrostatic Interlock Unit Drinking Water Side Bench Winch Remote Control Wire Spray Pump Air Bottle Drain Valve F.O. Valve Fig. 1.2 Fire-prote
46、cted lifeboat MSC.1/Circ.1205 ANNEX Page 10 I:CIRCMSC011205.doc 2 Method of checking proper closure of release hooks 2.1 Safe use and operation of lifeboats during drills and inspection and maintenance is dependent on knowing that the release gear is properly reset. Never Never enter lifeboat withou
47、t ensuring complete closure of release hooks. Incomplete resetting of the release hooks can cause the lifeboat to drop resulting in death. 2.2 Purpose of on-load release. The IMO LSA Code requires, among other things, that the lifeboat be fitted with “on-load release capability which will release th
48、e lifeboat with a load on the hooks. The release mechanism shall be so designed that crew members in the lifeboat can clearly observe when the release mechanism is properly and completely reset and ready for lifting. . . .” On-load release is needed for launching when there is a current, when the sh
49、ip is making way, or potentially if there are waves which cause the hydrostatic interlock to only release intermittently. On-load release also allows an empty or fully loaded boat to drop from any height, which can kill or seriously injure the occupants. Therefore it is critical to know that the release gear is properly reset and the release handle secured. 2.3 Ensuring release hook closure. The first thing to check whenever entering the lifeboat when it is (or will be) supported by the falls is properly reset