ISTEC 7ISTEC 7thth – 8 – 8thth September 2007 September 2007

Agenda item 4.2Agenda item 4.2Ballast Tank CoatingsBallast Tank Coatings

Andy AldersonAndy AldersonManager, Technical Excellence Centre, RINAManager, Technical Excellence Centre, RINA

Chairman IACS EG/CoatingChairman IACS EG/CoatingChairman JWG/CoatingChairman JWG/CoatingChairman JWG/COTCPSChairman JWG/COTCPS

•Background:Background:– PSPC Adopted at MSC 82PSPC Adopted at MSC 82– PSPC Applicable to CSR vessels from Date of PSPC Applicable to CSR vessels from Date of

AdoptionAdoption– Practical Guidance felt required for application of Practical Guidance felt required for application of

PSPCPSPC– JWG/Coatings established first meeting in Busan JWG/Coatings established first meeting in Busan

22-2422-24thth May 2006 May 2006– JWG comprises Class, Owners, Shipbuilders & JWG comprises Class, Owners, Shipbuilders &

Coating ManufacturersCoating Manufacturers

• Terms of ReferenceTerms of ReferenceThe JWG/The JWG/Coating is a forum to develop and Coating is a forum to develop and

unanimously agree, an industry best practice unanimously agree, an industry best practice document for the uniform application of IMO PSPC document for the uniform application of IMO PSPC covering areas outside the scope of PR 34. The covering areas outside the scope of PR 34. The exact contents to be discussed and agreed by the exact contents to be discussed and agreed by the JWG but would be expected to include:JWG but would be expected to include:– The contents of tripartite agreement between The contents of tripartite agreement between

owners, builders and paint manufacturers as owners, builders and paint manufacturers as required in PSPC 3.2.required in PSPC 3.2.

– Minimum scope of inspection and practical Minimum scope of inspection and practical guidance for the qualified inspector.guidance for the qualified inspector.

– Scope, format and content of the Coating Technical Scope, format and content of the Coating Technical File.File.

– Clarification of acceptable equivalences where Clarification of acceptable equivalences where permitted in the PSPC. permitted in the PSPC.

– Interpretations not within the scope of PR34.Interpretations not within the scope of PR34.The JWG/Coating does not have the remit to discuss The JWG/Coating does not have the remit to discuss

any changes to the requirements or reference any changes to the requirements or reference standards of the PSPC. Outcomes that constitute standards of the PSPC. Outcomes that constitute interpretations of the PSPC will be submitted to interpretations of the PSPC will be submitted to IMO for consideration, if found necessary.IMO for consideration, if found necessary.

• Method of WorkMethod of WorkIn order to meet its terms of In order to meet its terms of

reference the group worked on reference the group worked on the following principle.the following principle.– Any organisation could raise an Any organisation could raise an

item where it felt clarification was item where it felt clarification was needed and propose the wording.needed and propose the wording.

– It was discussed by the group to It was discussed by the group to better understand the issue.better understand the issue.

– If no objections then the guidance If no objections then the guidance was included.was included.

• Progress to DateProgress to Date– Final Guideline Document Final Guideline Document

Agreed.Agreed.– Items to be referred to IMO Items to be referred to IMO

identified.identified.•Two items identified however these Two items identified however these

are not new items and have been are not new items and have been some of the main areas of debate some of the main areas of debate since the beginning.since the beginning.

• Clarification Items for IMOClarification Items for IMO– Stripe coats shall be applied by brush or Stripe coats shall be applied by brush or

roller. Roller to be used for scallops, ratholes, roller. Roller to be used for scallops, ratholes, etc., onlyetc., only

This is a problem that was raised in numerous This is a problem that was raised in numerous discussions in IMO and has the following discussions in IMO and has the following interpretations by different members of the interpretations by different members of the group, either;group, either;

– Stripe coating can be done using a brush or a Stripe coating can be done using a brush or a roller, in ratholes scallops etc a roller must be roller, in ratholes scallops etc a roller must be used not a brush. used not a brush.

oror– Stripe coating can be done by brush or roller, Stripe coating can be done by brush or roller,

a roller may only be used in ratholes, scallops a roller may only be used in ratholes, scallops etc.etc.

•Clarification Items for IMOClarification Items for IMO

•This is another area where the wording in the standard causes This is another area where the wording in the standard causes confusion. As currently written there are two views on the confusion. As currently written there are two views on the wording the first view being the majority.wording the first view being the majority.

– The conductivity of total soluble salts are measured, and compared The conductivity of total soluble salts are measured, and compared with the conductivity of 50mg NaCl. If the measured conductivity is with the conductivity of 50mg NaCl. If the measured conductivity is lower then it is acceptable.lower then it is acceptable.

– The total soluble salts are measured, and then the quantity of NaCl in The total soluble salts are measured, and then the quantity of NaCl in that sample is calculated using conversion factor based upon that sample is calculated using conversion factor based upon experience of the shipyard. This result should be less than 50mg NaCl. experience of the shipyard. This result should be less than 50mg NaCl.

Water soluble salt limit Water soluble salt limit equivalent to NaClequivalent to NaCl

50 mg/m2 of sodium 50 mg/m2 of sodium chloridechloride

• Work RemainingWork RemainingThe view of the JWG is that this document should The view of the JWG is that this document should

be submitted to IMO as soon as possible in be submitted to IMO as soon as possible in order to aid implementation and that it should order to aid implementation and that it should be as an INF document so that the JWG can be as an INF document so that the JWG can revise in the future in light of experience.revise in the future in light of experience.– Agreement from member organisation TC’s to co-Agreement from member organisation TC’s to co-

sponsor submission to IMO as INF paper.sponsor submission to IMO as INF paper.– Submission to IMO regarding items for clarification.Submission to IMO regarding items for clarification.