PMA URS31 IACSDUBAI VANCOUVER

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Information about PMA URS31 IACSDUBAI VANCOUVER
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Published on November 8, 2007

Author: Miguel

Source: authorstream.com

Slide1:  IACS latest developments URS 31 Side frames verification PMA Permanent Means of Access For the benefit of business and people Dubai, March 26th.2004 Andrea Zamburlini - Paris Slide2:  Part 1 Latest IACS Rule development Part 2 Situation on Permanent Means of Access Part 3 URS31 and software « BULK » Slide3:  Part 1 Latest IACS Rules developments IACS REQUIREMENTS:  IACS REQUIREMENTS IACS IS INVOLVED IN THE DEFINITION OF THE FUTURE NEW RULES TO INCREASE SHIP’S STRENGTH HURRICANE CLAUDET – PACIFIC OCEAN IACS REQUIREMENTS:  IACS REQUIREMENTS Slide6:  RULES ENTERED INTO FORCE AFTER JULY 1ST. 1998: EXISTING SHIPS Slide7:  IACS REQUIREMENTS 1 RULES ENTERED INTO FORCE AFTER JULY 1ST. 2003: EXISTING AND NEW SHIPS Slide8:  IACS REQUIREMENTS 1 RULES TO COME: FUTURE NEW SHIPS IACS future work programme:  IACS future work programme IACS future work programme:  IACS future work programme Slide11:  IACS future work programme IACS future work programme:  IACS future work programme IACS future work programme:  IACS future work programme JTP & JBP SCHEDULE:  JTP & JBP SCHEDULE Slide15:  Part 2 Permanent Means of Access Background:  Background SOLAS New Regulation II-1 / 3.6 Original text adopted by MSC 134(76) on Dec 2002 Refer to Technical Provisions MSC133(76) for detailed structural arrangement Purpose : PMA shall be provided to enable Overall inspections, Close-up inspections & Thickness measurements Concerned Ships : Oil tankers Bulk carriers SOLAS Background 2 Application date of Reg 3.6 & TP: Oil tankers & Bulk carriers constructed on or after 1st January 2005 Background DE-47:  Background DE-47 Industry reacted against the existing text in 2003 IMO Assembly (Dec 2003) agreed to update the texts of Reg 3.6 & TP Proposals from : Greece Industry  : BIMCO, IGS, INTERCARGO, INTERTANKO & OCIMF IACS Korea DE 47 (25th Feb to 5th March 2004) started to work SOLAS Background 2 Slide18:  SOLAS Amended Regulation II-1 / 3.6 Amended Solas II-1 / Reg 3.6:  Amended Solas II-1 / Reg 3.6 Means of access Each space shall be provided with a permanent means of access ... No modification for : Safe access to cargo holds, ballast and other spaces  : direct from deck Number and Arrangement of access Ship structure access manual Access through openings Proposal to move the requirements into the Technical Provisions Kept in the Reg 3.6 - General Technical Specifications SOLAS Amended Reg II-1/3.6 2 General Technical Specifications:  General Technical Specifications Access through Horizontal openings, hatches or manholes : Minimum clear opening 600 x 600 mm & Corner radii up to 100 mm Max (IACS Interp.) Access through Vertical openings or manholes  : Minimum clear opening 600 x 800 mm May include corner radii up of 300 mm (IACS Interp.) Alternative to traditional opening (850x620) (IACS Interp.) Subject to verification of easy evacuation of injured person on a stretcher SOLAS Amended Reg II-1/3.6 Oil tankers DWT < 5000 t Adm may approve smaller dimensions Height > 600 mm Steps & handgrips It should be demonstrated that an injured person can be easily evacuated 2 Slide21:  SOLAS Amended Technical Provisions MSC 133(76) Means of Access to cargo and other spaces:  Means of Access to cargo and other spaces SOLAS Amended TP MSC 133(76) 2 Regulation not applied to Chemical Carriers engaged in intermittent carriage of oil cargoes Preamble:  Preamble PMA  : Designed to be integral parts of structure Opening in stringer plating utilized as PMA: SOLAS Amended TP MSC 133(76) 2 Stringer definition : Stiffened horizontal plating structure In Double Side ballast tanks  : If Continuous passage > 600 mm width past frames on Side shell or Long Bhd then considered as stringer and longitudinal PMA Technical Provisions What changed ?:  Technical Provisions What changed ? Technical provisions Structural members subject to Close-up Insp. & Thick. measurements : Permanent Means of Access  2 tables (Except Double bottom) SOLAS Amended TP MSC 133(76) 2 Elevated passageways Clear width > 600 mm Except going around vertical webs Clear width > 450 mm Guard Rails Tunnels  Requirement Deleted Technical Provisions What changed ? ..2..:  Technical Provisions What changed ? ..2.. Permanent Inclined Ladders Flight : Vert Height  6 m Resting platform : Vert Height  6 m Width :  400 mm Treads : Equally spaced 200  Vert distance 300 Vertical & Spiral Ladders Width & Construction Alternative means of access (not exhaustive list) Hydraulic arm fitted with stable base (local control deleted) Wire lift platform Staging Rafting Robot arm or Remotely Operated Vehicles Portable ladders > 5m long (if mechanical securing device) Other means of access approved by & accepted to Administration SOLAS Amended TP MSC 133(76) 2 Bulk Carriers  : Access ladders to cargo hold:  Bulk Carriers  : Access ladders to cargo hold Access ladders to cargo spaces Vertical distance  6 m  Vertical or series of inclined ladders Vertical distance > 6 m : SOLAS Amended TP MSC 133(76) 2 Bulk Carriers  : Access ladders to other spaces:  Bulk Carriers  : Access ladders to other spaces Access ladders to Top Side Tank Vertical distance  6 m  Vertical ladders  Distance : Deck to Long Means of Access / Stringer / Bottom of space Uppermost 2.5m : Vertical Linking platform except if Landing on Long. M.A. / Stringer / Bottom Vertical distance > 6 m  Inclined ladders Uppermost 2.5m : Vertical & landing platform Flight  : length  9 m & vertical Height  6 m Lowermost 2.5m : Vertical Access ladders to Double Side Skin with Width < 2.5m Vertical ladders & Linking platform with vertical distance < 6m Spiral ladders  Alternative to vertical ladders (for all spaces) Uppermost 2.5m : need not to be Vertical SOLAS Amended TP MSC 133(76) 2 Slide28:  Technical Provisions: Tables for Oil Tankers and Bulk Carriers Table Content:  Table Content Technical provisions : 2 Tables Table 1 : Oil tankers  : Means of access for ballast & cargo tanks Combined underdeck and vertical structure access Requirements for WB tanks & cargo oil tanks Requirements for Wing WB tanks Width < 5 m Forming double side spaces, including bilge hopper sections Table 2 : Bulk carriers Separation of underdeck and vertical structure Requirements for cargo holds Requirements for WB tanks SOLAS Amended TP Tables 4 Bulk Carriers - Cargo holds 1/:  Bulk Carriers - Cargo holds 1/ Underdeck Structure at Transverse Bhd 3 PMA both sides of cross deck & iwo centreline 1.6 to 3 m below deck Accessible from deck or cargo hold Transv Bhd with full upperstool & access from main deck : PMA in cross deck not required Table 2 Bulk Carriers Amended TP MSC 133(76) 2 Bulk Carriers - Cargo holds 2/:  Bulk Carriers - Cargo holds 2/ Vertical Structure 25% of all hold frames (P&Sbd) Equally distributed (Fwd to Aft)  3 (Fwd, Midspan, Aft) Portable or movable means for remaining frames Portable or movable means Carried on board Readily available for use Min. width of ladder  : 300 mm Single vertical ladder over 6 m : acceptable for inspection of SSS DSS construction : no vert ladder required (inspection within DSS) Table 2 Bulk Carriers Amended TP MSC 133(76) 2 Bulk Carriers - Ballast Tanks:  Bulk Carriers - Ballast Tanks Top Side Tank H  6 m One Continuous long PMA along side shell 1.6 to 3 m from deck If no access hole at 600mm/base & web height > 1m : Step rungs  / grap rails 3 PMA (ends & middle of bay) up to hatch side girder Longit. structure on sloping may be used H < 6 m Alternative means Bilge Hopper H  6 m One Continuous longitudinal PMA below top of clear opening at min 1.2m Vertical access ladder at each end of tank (tank access) Access ladder between LPMA & bottom H < 6 m : Alternative or portable means Alternative Solution (Min 1.6 m below the knuckle) It should be demonstrated that means of access may be brought into the bilge tank Double Hull : Same as for Oil Tankers Table 2 Bulk Carriers Amended TP MSC 133(76) 2 Oil Tankers & Bulk Carriers Fore Peak Tank:  Oil Tankers & Bulk Carriers Fore Peak Tank Fore Peak Tank depth > 6 m (at CL) Suitable Means of Access to : Underdeck structure Stringers Collision Bhd Side shell structure Stringer vertical distance < 6 m Considered as suitable access in combination with portable means Vertical distance  6m : Alternative means to be provided Table 1 & 2 Amended TP MSC 133(76) 2 Slide34:  Future Evolution Next Steps:  Next Steps Date of application : DE 47 did not decide and report on MSC MSC 78 (May 2004) has to decide the application date of amended texts (Solas Reg II-1/3.6 & Technical Provisions) IACS - Industry : Needs of up-date interpretations ? New Interpretations ? Future Evolution 2 Slide36:  Part 3 URS 31 VERIFICATION OF SIDE WEBS FOR THE EXISTING BULK CARRIERS Slide37:  BULK Bulk Carrier Safety Checking new IACS structural unified requirements IACS UR S31 for existing ships URS 31 – STRENGTH OF SIDE WEBS:  URS 31 – STRENGTH OF SIDE WEBS WHAT IS “BULK” SOFTWARE:  WHAT IS “BULK” SOFTWARE BULK has been conceived to help owners and designers to assess the compliance of their single side skin bulk carriers of 150 m in length or above, with the IACS ship’s structural requirements. Based on a very user-friendly platform under Windows environment, BULK will provide the User with a comprehensive view of compliance with the new strength criteria. The Unified Requirements have already been included in BV Rules. HOW THE “BULK” SYSTEM WORKS:  A Pre-calculation is carried out by BV Technical Dept. or by the Local Plan Approval Office Local Plan Approval Offices are located in: CENTRAL PLAN OFFICE PARIS CHINESE PLAN OFFICE SHANGHAI DUTCH PLAN OFFICE ROTTERDAM FRENCH PLAN OFFICE NANTES GERMAN PLAN OFFICE HAMBURG HELLENIC PLAN OFFICE PIRAEUS JAPANESE PLAN OFFICE KOBE KOREAN PLAN OFFICE PUSAN MADRID PLAN OFFICE MADRID NORDIC PLAN OFFICE COPENHAGEN RIO PLAN OFFICE RIO DE JANEIRO SINGAPORE PLAN OFFICE SINGAPORE TURKISH PLAN OFFICE ISTANBUL HOW THE “BULK” SYSTEM WORKS HOW THE “BULK” SYSTEM WORKS:  This pre-calculation is carried out with the software “Bulk” which has been specifically designed for the purpose of: calculating the minimum required thicknesses before the survey is started allowing the Surveyor to take appropriate actions during the survey, with respect to steel renewal or repairs or reinforcements of the frames and brackets, by comparing the measured thicknesses on-board to the pre-calculated thicknesses. The calculation sheets are then sent to the SHIPOWNER and to the SURVEY CENTRE, when known, in advance of the survey. One calculation sheet is available for each frame which has been pre-calculated. The calculation sheet also indicates the concerned hold No. for each pre-calculated frame. HOW THE “BULK” SYSTEM WORKS RESULTS OF “BULK” ANALYSIS:  RESULTS OF “BULK” ANALYSIS RESULTS OF “BULK” ANALYSIS:  RESULTS OF “BULK” ANALYSIS RESULTS OF “BULK” ANALYSIS:  RESULTS OF “BULK” ANALYSIS RESULTS OF “BULK” ANALYSIS:  RESULTS OF “BULK” ANALYSIS RESULTS OF “BULK” ANALYSIS:  RESULTS OF “BULK” ANALYSIS “BULK” is available free of charge from BV internet site:  “BULK” is available free of charge from BV internet site Slide48:  THANK YOU FOR YOUR ATTENTION

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