Date post: | 19-Dec-2015 |
Category: |
Documents |
Upload: | gillian-caldwell |
View: | 222 times |
Download: | 0 times |
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
www.safinah.co.uk IMAREST/RINA09 3
www.safinah.co.uk IMAREST/RINA09 7
The Parties Involved at present
Productivity/
Environment
Shipyard Ship-owner
Performance
Coating supplier
www.safinah.co.uk IMAREST/RINA09 8
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
www.safinah.co.uk IMAREST/RINA09 9
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
www.safinah.co.uk IMAREST/RINA09 10
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!
www.safinah.co.uk IMAREST/RINA09 11
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?
www.safinah.co.uk IMAREST/RINA09 12
www.safinah.co.uk IMAREST/RINA09 13
Coating Performance Standard Review
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
www.safinah.co.uk IMAREST/RINA09 16
Coating Performance Standard Review
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
www.safinah.co.uk IMAREST/RINA09 17
Coating Performance Standard Review
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
www.safinah.co.uk IMAREST/RINA09 18
The Parties Involved
Productivity
Performance
Shipyard Ship-owner
?
Coating supplier
Classification Soc.
www.safinah.co.uk IMAREST/RINA09 19
Coating Performance Standard Review
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
www.safinah.co.uk IMAREST/RINA09 20
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
www.safinah.co.uk IMAREST/RINA09 21
The Paint Specification
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
www.safinah.co.uk IMAREST/RINA09 22
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
www.safinah.co.uk IMAREST/RINA09 23
Inspection process
The inspection process covers all the processes and defines the standards from:
Shop Primer Application
Block Painting
Post Erection Repairs
www.safinah.co.uk IMAREST/RINA09 24
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
www.safinah.co.uk IMAREST/RINA09 59www.safinah.co.uk 59
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
: 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
Data management - ELCOship
Electronic data gathering
Local PC
Remote database
Coating Technical FileIMO PSPC Compliant
Standard documents
Reference drwgs
www.elcoship.com
www.safinah.co.uk IMAREST/RINA09 66www.safinah.co.uk 66
Verification
• Tri-party agreement• Type approval• Test results• Process audit• Inspection audit• CTF audit and sign off – currently cannot be complied
with
www.safinah.co.uk IMAREST/RINA09 67
The Paint Specification
• 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
www.safinah.co.uk IMAREST/RINA09 68
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
www.safinah.co.uk IMAREST/RINA09 69
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?