Pma Urs31 Iacsdubai Vancouver

•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

2

Part 1 Latest IACS Rule

developmentPart 2 Situation on Permanent

Means of AccessPart 3 URS31 and software

« BULK »

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Part 1

Latest IACS Rules

developments

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IACS REQUIREMENTSIACS REQUIREMENTSIACS REQUIREMENTS

1

IACS IS INVOLVED IN THE DEFINITION OF THE FUTURE NEW RULES TO

INCREASE SHIP’S STRENGTH

HURRICANE CLAUDET – PACIFIC OCEAN

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IACS REQUIREMENTSIACS REQUIREMENTSIACS REQUIREMENTS

1

6

IACS REQUIREMENTS

1RULES ENTERED INTO FORCE

AFTER JULY 1ST. 1998:EXISTING SHIPS

RULES ENTERED INTO FORCE AFTER JULY 1ST. 1998:

EXISTING SHIPSURS 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)

BEFORE 1st.July 1998

(built) 1st.July 1998 (built)

1st.July 2003 (contract):

NEW RULES

URS 12: DESIGN OF SIDE WEBS

URS 18: DESIGN OF TRANSVERSE

CORRUGATED BULKHEAD BETWEEN HOLD 1 & 2

URS 20: DESIGN OF DOUBLE BOTTOM

STRUCTURE

URS 17: GLOBAL STRENGTH CHECKED AGAINST EACH HOLD

FLOODED

AFTER 1st.July 1998 (built):

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UISC 179-180 (EX URS 24): WATER

INGRESS ALARMS

1st.July 2004 (built)

URS 25: NEW LOADING

CONDITIONS

1st.July 2003 (contract)

IACS REQUIREMENTS

1RULES ENTERED INTO FORCE

AFTER JULY 1ST. 2003:EXISTING AND NEW SHIPS

RULES ENTERED INTO FORCE AFTER JULY 1ST. 2003:

EXISTING AND NEW SHIPSURS 26: STRENGTH OF SMALL HATCHES ON

EXPOSED FORE DECK

URS 27: FORE DECK EQUIPMENTS AND

OUTFITTINGS

1st.Jan 2004 (contract)

URS 30: CLOSING DEVICES OF

HATCHCOVERS N.1 & 2

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

URS 21: NEW SHIPS SCANTLING OF HATCH COAMINGS AND

HATCHCOVERS

URS 28: NEW SHIPS FITTING OF A

FORECASTLE

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ILLC: ADD VOLUME

FORWARD

SOLAS II-1/3.6: PERMANENT MEANS OF ACCESS

URS 32-33: INCREASED SCANTLING OF DOUBLE SIDE

STRUCTURES ?

1st.Jan 2005 (built)

IMO:

DOUBLE SIDE SKIN REQUEST

?

1st.Jan 2007 (built)

IACS REQUIREMENTS

1 RULES TO COME: FUTURE NEW SHIPS

RULES TO COME: FUTURE NEW SHIPS


1st.July 2003 (contract)

1st.Jan 2004 (contract)


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IACS work1 IACS future work programmeIACS future work programme

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LRS, ABS and DNV

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12


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JTP & JBP SCHEDULEJTP & JBP SCHEDULEIACS work1

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Part 2

Permanent Means of Access

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BackgroundBackground

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 Background2

Application date of Reg 3.6 & TP:

• Oil tankers & Bulk carriers constructed on or after 1st January 2005

500 gross tonnage 20,000 gross tonnage

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Background DE-47Background 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 Background2

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SOLAS Amended

Regulation II-1 / 3.6

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Amended Solas II-1 / Reg 3.6Amended 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

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General Technical SpecificationsGeneral Technical Specifications

Access through Horizontal openingsHorizontal openings, hatches or manholes :

• Minimum clear opening 600 x 600 mm & Corner radii up to 100 mm Max (IACS Interp.)

Access through Vertical openingsVertical 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

Document WordPad

Document WordPad

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

Document WordPad

2

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SOLAS

Amended Technical Provisions

MSC 133(76)

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Means of Access to cargo and other spaces

Means of Access to cargo and other spacesSOLAS Amended TP

MSC 133(76)2

Forward Ballast tanks: Included

Each space within the cargo areaShall be provided with a Means of Access

(Except Double bottom spaces)

Each space within the cargo areaShall be provided with a Means of Access

(Except Double bottom spaces)

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

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

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PreamblePreamble

PMA : Designed to be integral parts of structure

600

Gu

ard

Ra

il

Safe guards

Or

Grid cover

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

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Technical ProvisionsWhat changed ?

Technical ProvisionsWhat changed ?

Technical provisions

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


2

Oil TankerWing ballast of Ore carriers

Approved Alternative method in combination with

fitted PMA

Elevated passageways

• Clear width > 600 mm

• Except going around vertical webs Clear width > 450 mm

• Guard Rails

Tunnels Requirement Deleted

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Technical ProvisionsWhat changed ? ..2..

Technical ProvisionsWhat changed ? ..2..

Permanent Inclined Ladders

• Flight : Vert Height 6 m

• Resting platform : Vert Height 6 m

• Width : 400 mm

• Treads : Equally spaced200 Vert distance 300

Ve

rtic

al H

eig

ht

Vertical & Spiral Ladders

• Width & Construction International or National Standards accepted by the Administration

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


2

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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 :

Inclined ladders atat one endone end of cargo hold

Inclined ladders atat one endone end of cargo hold

Vertical ladder at the other endat the other end of cargo hold

Vertical ladder at the other endat the other end of cargo hold


2

Uppermost 2.5m :Vertical ladder

Flight : vertical Height 6 mLinking platforms

Lowest 6m : Vertical ladder

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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


2

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Technical Provisions:

Tables for Oil Tankers and Bulk Carriers

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Table ContentTable 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 TPTables

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Bulk Carriers - Cargo holds1/


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

Equivalent : Athwartship PMA

1.6 to 3 m below deck

Transv Bhd with full upperstool & access from main deck :

• PMA in cross deck not required

Height < 17m Alternative Means

Table 2 Bulk Carriers Amended TP MSC 133(76)

2

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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

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Bulk Carriers - Ballast TanksBulk 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

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


2

For DSS, L Cont PMA may be within 6m from knuckle,

IFIF in combination within combination with Alternative means

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Oil Tankers & Bulk CarriersFore Peak Tank

Oil Tankers & Bulk CarriersFore 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

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Future Evolution

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Next StepsNext 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 ?

1.1.05

SOLAS II-1Reg. 3.6 & TP

2002 Text

New Interpretations ?

DE

M

ar 2

004IMO

Assembly Dec 2003

Request of Revision

MS

C M

ay 2

004

Proposed amendmentsReg II-1/3.6 & TP

MS

C D

ec 2

004

Application date of Amendments ?

Application date of Amendments ?

SOLAS II-1Reg. 3.6 & TP

Amended

Future Evolution2

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Part 3

URS 31VERIFICATION OF SIDE WEBS

FOR THE EXISTING

BULK CARRIERS

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BULKBulk Carrier SafetyChecking new IACS structural unified requirements

3 IACS URS 31 IACS UR S31 for existing ships

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URS 31 – STRENGTH OF SIDE WEBSURS 31 – STRENGTH OF SIDE WEBS3 IACS URS 31

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WHAT IS “BULK” SOFTWAREWHAT 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.

3 IACS URS 31

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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

3 IACS URS 31 HOW THE “BULK” SYSTEM WORKSHOW THE “BULK” SYSTEM WORKS

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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.

3 IACS URS 31 HOW THE “BULK” SYSTEM WORKSHOW THE “BULK” SYSTEM WORKS

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3 IACS URS 31 RESULTS OF “BULK” ANALYSIS

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3 IACS URS 31 RESULTS OF “BULK” ANALYSISRESULTS OF “BULK” ANALYSIS

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RESULTS OF “BULK” ANALYSISRESULTS OF “BULK” ANALYSIS3 IACS URS 31

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3 SOME PRICE

SINGLE SIDE SKIN BULK CARRIERS

EXISTING SHIPS NEW SHIPS

ITEM BUILT BEFORE BUILT AFTERCONTRACTED

AFTERCONTRACTED

AFTER PRICE [€]July 1st. 1998 July 1st. 1998 JULY 1st. 2003 January 1st. 2004

SIDE WEBS URS 31(*) URS 12 URS 12 URS 12 3000-5000TRANSVERSE BULKHEAD BETWEEN HOLD N.1 AND

HOLD N.2 URS 19(*)DOUBLE BOTTOM HOLD

N.1 URS 22(*)ALL TRANSVERSE

BULKHEADS URS 18(*) URS 18(*) URS 18(*)DOUBLE BOTTOM ALL

HOLDS URS 20(*) URS 20(*) URS 20(*)

LONGITUDINAL STRENGTH URS 17 URS 17 URS 17CLOSING DEVICES HATCH-

COVERS N.1& N.2 URS 30 URS 30 URS 30 URS 21 1000SMALL HATCHES ON

EXPOSED FORE DECK URS 26 URS 26 URS 26 URS 26 1000REINFORCEMENTS OF

DECK FORE EQUIPMENTS AND OUTFITTINGS URS 27 URS 27 URS 27 URS 27 1000

HATCH-COAMINGS & HATCHCOVERS URS 21

FITTING OF A FORECASTLE URS 28

MASS CURVES URS 25(*) URS 25(*)

(*) VERIFIED WITH SOFTWARE "BULK"Full package of URS 26, 27, 30, 31: € 5500

“BULK” is available free of charge from BV internet site

“BULK” is available free of charge from BV internet site

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THANK YOU FOR YOUR ATTENTION

Pma Urs31 Iacsdubai Vancouver

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