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IACS latest developments URS 31 Side frames verification PMA Permanent Means of Access. Dubai, March 26 th .2004 Andrea Zamburlini - Paris. For the benefit of business and people. Part 1 Latest IACS Rule development Part 2 Situation on Permanent Means of Access Part 3

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slide1

IACS latest developments

  • URS 31 Side frames verification
  • PMA Permanent Means of Access

Dubai, March 26th.2004

Andrea Zamburlini - Paris

For the benefit of business and people

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

1

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 requirements1

1

IACS REQUIREMENTS

IACS REQUIREMENTS
slide6

RULES ENTERED INTO FORCE

AFTER JULY 1ST. 1998:

EXISTING SHIPS

1

IACS REQUIREMENTS

  • URS 23: IMPLEMENTATION OF REQUIREMENTS IN TERM OF:
  • STRENGTH OF TRANSVERSE CORRUGATED BULKHEAD BETWEEN HOLD 1 & 2 (URS 19)
  • STRENGTH OF DOUBLE BOTTOM STRUCTURE WITH HOLD N.1 FLOODED (ALLOWABLE HOLD LOADING, URS 22)

URS 12: DESIGN OF SIDE WEBS

URS 17: GLOBAL STRENGTH CHECKED AGAINST EACH HOLD FLOODED

URS 20: DESIGN OF DOUBLE BOTTOM STRUCTURE

URS 18: DESIGN OF TRANSVERSE CORRUGATED BULKHEAD BETWEEN HOLD 1 & 2

AFTER 1st.July 1998 (built):

BEFORE 1st.July 1998 (built)

1st.July 1998 (built)

1st.July 2003 (contract):

NEW RULES

slide7

RULES ENTERED INTO FORCE

AFTER JULY 1ST. 2003:

EXISTING AND NEW SHIPS

1

URS 26: STRENGTH OF SMALL HATCHES ON EXPOSED FORE DECK

URS 21:NEW SHIPSSCANTLING OF HATCH COAMINGS AND HATCHCOVERS

URS 27: FORE DECK EQUIPMENTS AND OUTFITTINGS

URS 31: RENEWAL OF SIDE WEBS OF BULK BUILT BEFORE JULY 1ST. 1998

URS 30: CLOSING DEVICES OF HATCHCOVERS N.1 & 2

URS 28: NEW SHIPS FITTING OF A FORECASTLE

UISC 179-180 (EX URS 24): WATER INGRESS ALARMS

URS 25: NEW LOADING CONDITIONS

1st.July 2003 (contract)

1st.Jan 2004 (contract)

1st.July 2004 (built)

IACS REQUIREMENTS

slide8

1

SOLAS II-1/3.6: PERMANENT MEANS OF ACCESS

ILLC: ADD VOLUME FORWARD

IMO:

DOUBLE SIDE SKIN REQUEST

?

URS 32-33: INCREASED SCANTLING OF DOUBLE SIDE STRUCTURES

?

1st.July 1998 (built)

1st.July 2003 (contract)

1st.Jan 2005 (built)

1st.July 2004 (built)

1st.Jan 2007 (built)

1st.Jan 2004 (contract)

RULES TO COME:

FUTURE NEW SHIPS

IACS REQUIREMENTS

iacs future work programme1

1

IACS work

LRS, ABS and DNV

IACS future work programme
slide11

1

IACS work

IACS future work programme

slide15

Part 2

Permanent Means of Access

background

 500 gross tonnage

 20,000 gross tonnage

2

Background

SOLAS 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
  • Application date of Reg 3.6 & TP:
    • Oil tankers & Bulk carriers constructed on or after 1st January 2005
background de 47

2

Background DE-47

SOLAS Background

  • 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
amended solas ii 1 reg 3 6

2

Amended Solas II-1 / Reg 3.6

SOLAS Amended Reg II-1/3.6

  • 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
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

2

General Technical Specifications

SOLAS Amended Reg II-1/3.6

  • Height > 600 mm
    • Steps & handgrips
    • It should be demonstrated that an injured person can be easily evacuated
  • Oil tankers DWT < 5000 t
    • Adm may approve smaller dimensions
slide21

SOLAS

Amended Technical ProvisionsMSC 133(76)

means of access to cargo and other spaces

Each space within the cargo areaShall be provided with a Means of Access(Except Double bottom spaces)

Forward Ballast tanks: Included

2

Means of Access to cargo and other spaces

SOLAS Amended TP MSC 133(76)

Regulation not applied to Chemical Carriers engaged in intermittent carriage of oil cargoes

preamble

Safe guards

OrGrid cover

2

Preamble

SOLAS Amended TP MSC 133(76)

PMA  : Designed to be integral parts of structure

  • 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

  • Opening in stringer plating utilized as PMA:
technical provisions what changed

Approved Alternative method in combination with fitted PMA

Oil TankerWing ballast of Ore carriers

2

Technical ProvisionsWhat changed ?

SOLAS Amended TP MSC 133(76)

  • Technical provisions
    • Structural members subject to Close-up Insp. & Thick. measurements : Permanent Means of Access  2 tables (Except Double bottom)
  • 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

International or National Standards accepted by the Administration

2

Technical ProvisionsWhat changed ? ..2..

SOLAS Amended TP MSC 133(76)

  • 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
bulk carriers access ladders to cargo hold

Inclined ladders atone end of cargo hold

Vertical ladder at the other end of cargo hold

Uppermost 2.5m :Vertical ladder

Flight  : vertical Height  6 mLinking platforms

Lowest 6m : Vertical ladder

2

Bulk Carriers  :Access ladders to cargo hold

SOLAS Amended TP MSC 133(76)

  • Access ladders to cargo spaces
    • Vertical distance  6 m Vertical or series of inclined ladders
    • Vertical distance > 6 m :
bulk carriers access ladders to other spaces

2

Bulk Carriers  :Access ladders to other spaces

SOLAS Amended TP MSC 133(76)

  • 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
technical provisions tables for oil tankers and bulk carriers
Technical Provisions:

Tables for Oil Tankers and Bulk Carriers

table content

4

Table Content

SOLAS Amended TPTables

  • 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
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

Equivalent :

Athwartship PMA

1.6 to 3 m below deck

Height < 17m  Alternative Means

2

Bulk Carriers - Cargo holds1/

Table 2 Bulk Carriers Amended TP MSC 133(76)

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)

2

Bulk Carriers - Cargo holds2/

Table 2 Bulk Carriers Amended TP MSC 133(76)

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 girderLongit. 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

For DSS, L Cont PMA may be within 6m from knuckle, IFin combination with Alternative means

2

Bulk Carriers - Ballast Tanks

Table 2 Bulk Carriers Amended TP MSC 133(76)

It should be demonstrated that means of access may be brought into the bilge tank

Double Hull : Same as for Oil Tankers

Alternative Solution(Min 1.6 m below the knuckle)

oil tankers bulk carriers fore peak tank

2

Oil Tankers & Bulk CarriersFore Peak Tank

Table 1 & 2 Amended TP MSC 133(76)

  • 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
next steps

Application date of Amendments ?

SOLAS II-1Reg. 3.6 & TP2002 Text

SOLAS II-1Reg. 3.6 & TPAmended

IMO Assembly Dec 2003

DE Mar 2004

MSC May 2004

1.1.05

MSC Dec 2004

Request of Revision

Proposed amendmentsReg II-1/3.6 & TP

2

Next Steps

Future Evolution

  • 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 ?

slide36

Part 3

URS 31

VERIFICATION OF SIDE WEBS FOR THE EXISTING BULK CARRIERS

slide37

3

IACS URS 31

IACS UR S31 for existing ships

BULK

Bulk Carrier Safety

Checking new IACS structural unified requirements

what is bulk software

3

IACS URS 31

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

3

IACS URS 31

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 works1

3

IACS URS 31

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.

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