Dr M Raouf Kattan FRINA C.Eng IMAREST/RINA091 Implementing The Paint Specification in the...

Dr M Raouf Kattan FRINA C.Eng www.safinah.co.uk IMAREST/RINA09 1

Implementing The Paint Specification in the Performance Standard for Protective

Coatings – The Challenge

The North East Coast Joint Branch of IMAREST and RINA

Newcastle upon Tyne

12 March 2009

www.safinah.co.uk IMAREST/RINA09 2

Objective

To provide a review of the requirements/challenges posed by the IMO PSPC and highlight some key issues.

Rust is a Must – a poem

…….All the ships upon the sea

Slowly turn to Fe203…….

T.B Watson


High Technology shipbuilding


Surface preparation


Painting

Improvement is needed


The Parties Involved at present

Productivity/

Environment

Shipyard Ship-owner

Performance

Coating supplier


The Parties Involved

A paint specification is in many ways a compromise:

– It has to meet with the yards building procedures, environmental and productivity requirements

– The shipyard is the customer of the coating manufacturers and they have to be competitive on standards as well as price

– It has to match the paint suppliers product range.

The PSPC is in effect making the compromise redundant


Coating Performance Standard Review

The Performance Standard for Protective Coatings (PSPC) provides the technical requirements for protective coatings in dedicated sea water ballast tanks of all types of ships of 500 gt and greater and double sided skin spaces on bulk carriers of 150m and greater in length.

It will be mandatory and is intended to be included as amendments to SOLAS regs II-1/3-2 and XII/6

It is also recommended to be applied where possible to items, not integral to the structure e.g. ladders, platforms – Permanent means of access


Tip of the iceberg

A family of regulations– PSPC– Permanent means of access– Cargo tanks– Maintenance

These will change the current compromise solutions

SOLAS Regulation

All vessels now cannot be delivered without a compliant ballast tank coating systems

For Common Structural Rule vessels – this now becomes a condition of class!


Why?

Structural failures

Chase for minimum standards

Use of high tensile steels

Paint as part of the solution – but was it part of the problem?




Aims of the PSPC

– to provide a 15 year life for ballast tank coatings over which it is defined as in being ‘good’ condition.

– ‘Good’ condition is defined in resolution A.744(18) and is “ condition with only minor rust spotting”

– Better coating systems with reduced maintenance

– Improved safety at sea



Aims of the PSPC



Entry into force

The proposals will apply to the aforementioned types of vessels:

– For which the building contract is placed on or after 1st July 2008, or

– In the absence of a building contract, the keels of which are laid or which are at a similar stage of construction on or after 1st January 2009, or

– The delivery of which is on or after 1st July 2012



Entry into force

However IACS applied the proposals on ratification to tankers ( L > 150m) and bulkers (L > 90m) under the Common Structural Rules (CSR) for contracts signed from December 8th 2006

The first new building classed under the above rules were delivered in the second half of 2008


The Parties Involved

Productivity

Performance

Shipyard Ship-owner

?

Coating supplier

Classification Soc.



Main Elements of the PSPC:

– Design of a specification and coating system

– Coating System approval

– Definition of inspection procedures

– Production of a Coating Technical File (CTF) which records all aspects of the process

– Verification of compliance


The Paint Specification

The paint specification is at the heart of the PSPC and covers:– Primary and Secondary surface preparation standards– Steel profile range– Cleanliness of surfaces prior to coating– Soluble salt limits– Steel condition– Thickness and number of coats– Environmental conditions allowed



The paint specification applies to the coating system that has been selected

Selection of the coating system takes into account the service conditions and planned maintenance

All coatings to be epoxy based or equivalent and consist of multi-coat systems of contrasting colour

The top coat to be a light colour


Type approval

All coatings to be pre-qualified by:– A method corresponding to a specified test procedure or

equivalent ( now Annex 1), cross test with shop primer or…– Documented field exposure with a final condition of “GOOD”

after 5 years

Non Annex 1 test must show equivalent testing procedures and needs.

A Statement of Compliance or Type Approval Certificate to be issued by a third party - independent of the coating manufacturer


Inspection process

The inspection process covers all the processes and defines the standards from:

Shop Primer Application

Block Painting

Post Erection Repairs


The inspection process

• The inspection processat each stage can be separated into the following simple processes:

– Cleaning the surface

– Preparing the surface

– Coating the surface

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Coating technical file (CTF)

• YARD– A statement of agreement

between Owner/yard and paint company for this contract

– Paint specification as issued by yard including key criteria and data sheets

– A summary or full log of work carried out by yard/coating inspector - one for each tank and Non-conformity/repair summary log for each tank - including verified inspection reports

– Statement of conformance

– Copy of type approval certificate or statement of compliance

– Yard procedures (for inspection and repair) audit certificate from class (includes application ).

• Paint Company– Planned maintenance

procedures for in service

• Ship owner– Maintenance log– Inspection log– Condition log– Class inspection log

DFT Measurement

Typical Double Bottom Block

WT BHD

FWD

Long spacing 0.7 – 0.95m3 – 6m

DFT Measurement

: Long & Trans (2 reading/2~3m) : Flat area (1 reading / 5 m2)

Flat area 22 points

Long and Trans 60 points

DFT Measurement

26 Openings

12 Openings

8 Openings42 openings – 92 measurements

Openings > 400mm – 4 measurements

DFT Measurement

Total area to paint 2,790m2

Total measurements 3,400

DFT measurements

Total area of WBT = 240,000m2

About 40 football fields

Data management - ELCOship

Electronic data gathering

Local PC

Remote database

Coating Technical FileIMO PSPC Compliant

Standard documents

Reference drwgs

www.elcoship.com

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Verification

• Tri-party agreement• Type approval• Test results• Process audit• Inspection audit• CTF audit and sign off – currently cannot be complied

with



• The main elements of the specification in the PSPC are already being carried out in many shipyards and have been for a number of years

• The main items that are new are :

– A Coating Technical File has to be produced by the shipyard

– All inspectors are to be qualified to a recognised standard

– Increased inspection and prescriptive inspection and data collection

– Audit by class


Ambiguities

• There are many ambiguities in the standard:– Salt measurement– 90:10 rule– Area judgement and other subjective elements– CTF detail and content– Products approved through testing – will they last 15 years target life– What happens if they do not– Approved inspector

• There are some guidelines– PR34 from IACS– IACS guidance notes

• Maintenance requirements• Costs of implementation• IACS members not acting in harmony – adding costs• Conflict with other regulations


Conclusions

• Added time and cost to the process• Needs a bedding in period• Needs a cool and calm interpretation• In the wrong hands is adding to costs.• Places a clear increased burden on yards• It is going to get worse before it gets better.• Will it bring with it improvements?• Is it needed?• Can we do better?

Do it soon

Thank you – but how does the poem end?

……Here’s to rust no doubt about it

Most of us would starve without it!…..


Acknowledgement to Hyun- Kug Lee for some images (Korean Shipbuilders Assoc and Samsung Heavy Industry) for some images

Dr M Raouf Kattan FRINA C.Eng IMAREST/RINA091 Implementing The Paint Specification in the...

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