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1 IMO Performance Standard for Protective Coatings Joo-Sung Park/Statutory Service Team 19th June 2006.

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Presentation on theme: "1 IMO Performance Standard for Protective Coatings Joo-Sung Park/Statutory Service Team 19th June 2006."— Presentation transcript:

1 1 IMO Performance Standard for Protective Coatings Joo-Sung Park/Statutory Service Team 19th June 2006

2 2 Mandatory performance standard by the SOLAS II-1/3-2: “PERFORMANCE STANDARD FOR PROTECTIVE COATINGS FOR DEDICATED SEAWATER BALLAST TANKS IN ALL TYPE OF SHIPS AND DOUBLE-SIDE SKIN SPACES OF BULK CARRIERS” 1.Amendment of SOLAS Reg. II-1/3-2 to introduce mandatory protective coating requirements in SOLAS -Adoption: To be adopted by MSC 82(Dec. 2006) -Enter into force: 1 July Scope -Maintenance and Repair: Guidelines to be developed later 2. SOLAS Reg. XII/6.3(for bulk carriers): deleted as of 1 July 2008 Amendment to SOLAS regulation

3 3 APPLICATION DATE Contract date base: Vessel(s) contracted on or after 1 st July 2008 or Delivery date base: Vessel(s) delivered on or after 1 st of July Dedicated seawater ballast tanks in all vessels above GT 500 T and above -Double –side skin spaces in bulk carriers of 150m in length and above -Permanent Means of Access(PMA): shall be applied to structural strength members and recommend to apply for non-structural strength members Bulk Carriers of 150 m and above: The SOLAS Contracting Government may apply the PSPC in advance for the ships in its flag constructed on or after 1 July 2006(I.e. ships under SOLAS Reg.XII/6.3) EARLY IMPLIMENTATION  By MSC circular to be approved by MSC 82 APPLICATION SCOPE


5 5 DEFINITIONS -DFT, NDFT -Edge Grinding -Hard coating -Target useful life: 15 years -Technical Data Sheet -GOOD condition - The coating ability to reach target life 15 yrs : depend on type of coating system, steel preparation, application, coating inspection and maintenance - Inspection of surface preparation and coating process: shall be agreed between ship owner, shipyard and coating manufacturer - Coating Technical File(CTF): shall be reviewed by Admin. or RO and be provided on board: Type approval cert. Technical Data sheet, Records of coating application, inspection and repair procedure during construction, procedure for in-service maintenance and repair of the coating system GENERAL PRINCIPLES

6 6 COATING STANDARD Coating system Job specification -Rust, grease, dust, salt, oil, etc. shall be removed prior to coating - Abrasive inclusions embedded in the coating shall be removed - Selection of coating system: Deck and tank boundaries  to withstand repeated heating/cooling - Coating type:epoxy based system(other type shall comply with test in Annex 1) - Pre-qualification test: * Epoxy based system shall be tested in accordance with Annex 1 or equivalent test procedures (e.g. Class B1?) * Documented field exposure results(5 yrs) also acceptable * New coating system shall be tested according to Annex 1

7 7 Job specification - Stripe coating There shall be a minimum of two stripe coats and two spray coats, except that the second stripe coat, by way of welded seams only, may be reduced in scope where it is proven that the NDFT can be met by the coats applied in order to avoid unnecessary over thickness. Any reduction in scope of the second stripe coat shall be fully detailed in the CTF. The application scope of brush may have a different interpretation according to the personnel knowledge, background and experiences. A strong necessity for development of a stripe coating tool which is combined two characteristic of roller and brush to improve quality and efficiency of stripe coating Stripe coats shall be applied by brush or roller. Roller to be used for scallops, ratholes, etc. only. COATING STANDARD

8 8 NDFTNDFT 320 Microns with 90/10 rule - max. TDFT -> according to manufacture’s spec. - Gauge type: SSPC-PA2 Current Standard NDFTNDFT 300 Microns with 80/20 rule i.About 7% of paint material cost increase Mean ㎛ Max. 1, ㎛ No. of Readings100 (100%) STD Deviation ㎛ Min ㎛ Reading above23 (3%) Coef. of Vari ㎛ High Limit ㎛ Reading below7 (7%) Low Limit ㎛ Sampling test result: DFT measuring based on the Current Standard 2 coats 300 ㎛ ii.Increase application M/H and material cost due to the relatively wider range of DFT than Current Standard iii. More potential risk for high DFT (may impact on progress)

9 9 COATING STANDARD Primary surface preparation - Blasting and profile: Sa 2 ½ (profile: ㎛ ) (average?) – ISO * restriction: humidity 85% or above, surface temp. below 3 ℃ - ISO /3 * surface cleanliness and roughness profile check before application - Salt limit(NaCl): ≤ 50 mg/ ㎡ (ISO Conductivity test) - Shop primer: * Inhibitor free zinc silicate based or equivalent * Compatibility with main coating system: shall be confirmed by coating manuf.

10 10 Secondary Surface Preparation(SSP): Steel condition - Edge Grinding The steel surface should be prepared so that the coating selected can achieve an even distribution at the required NDFT and have an adequate adhesion by removing weld spatter and any other surface contamination in accordance with ISO grade P2. The amount grinding activities will tremendously be increased at block assembly stage. A strong necessity for development of a grinding tool or process to mitigate the huge burden for labor and progress management. Edges to be treated to a rounded radius of minimum 2mm, or subjected to three pass grinding or at least equivalent process before painting. COATING STANDARD

11 11 SSP – surface treatment i.Damaged surface of shopprimer and welds: SIS Sa 2½ ( ISO ) ii.Compatible intact surface of shopprimer: Sweep blasting, high pressure water washing or equivalent method. (cf. compatible zinc silicate shop primer - cross over with other epoxy coatings: appdx. 1) iii.Intact shop primer not compatible with the main coat: Sa 2 (70% removal) Block division, erection procedure, working process should be take into account the limit of the amount of coating damages, erection butts to avoid the application of the blasting after erection. COATING STANDARD At block assembly stage After erection i.Butts: SIS St 3 or better or Sa 2½ where practicable. (ISO ) ii.Small damages up to 2% of total area: St 3 iii.Contiguous damages over 25m 2 or over 2% of the total area of the tank: Sa 2½ (definition of damage, calculation of damaged area?, 순차적인 덧칠로 해결 ?)

12 12 COATING STANDARD SSP - DUST i Dust grade “1” for dust size class “3” to “5” by means of adhesive tape test (ISO ) Ii Dust size classes “1” and “2”: shall be removed if visible (naked eye) Sampling of Current Standard for DUST grade FloorWallCeiling Dust Size (ISO ) 0 : Particles not visible under x10 magnification 1 : Particles visible under x10 magnification but not with normal or corrected vision(usually particles less than 50 ㎛ in diameter) 2 : Particles just visual with normal or corrected vision (usually particles between 50 ㎛ and 100 ㎛ diameter) 3 : Particles clearly visible with normal or corrected vision(particles up to 0.5mm in diameter) 4 : Particles between 0.5mm and 2.5mm in diameter 5 : Particles lager than 2.5mm in diameter

13 13 COATING STANDARD Soluble salt limit ISO : Extraction methodology (Bresel only ?) ISO : Assessment of soluble salt by conduct metric ≤ 50 mg/m 2 of NaCl (Pre-washing is not explicitly required) A test result for the comparison of the content of Sodium Chloride in Total Dissolved Salt

14 14 QUALIFICATION OF COATING INSPECTOR i. NACE CIP(COATING INSPECTOR PROGRAM): LEVEL II, or ii. FROSIO(NORWEGIAN STANDARD NS 476): LEVEL RED, or Iii Equivalent as verified by Administration or RO - Inspection items: Table in para Recordings: results from the inspection shall be recorded by the inspector and shall be included in the CTF – daily log and NC report. No. of Inspector No of Certified Remarks (FROSIO) Ship Builder24039 (16%)7 major ship yard in Korea Paint Maker50778 (15%)6 major paint Maker in Korea Increased inspection activities for DFT measurement acc. to Annex 3 Increased documentation for provision of CTF. Increased activity for the test such as dust, soluble salt, profiles, etc. Other activity for approval of the quality control system Ship Builder480At least, more than two times of the present coating inspectors are necessary to meet the PSPC comparing with the current shipbuilding standards. Paint Maker1,014 Current Status for Certified Coating Inspector (May, 2006)

15 15 VERIFICATION REQUIREMENTS Type Approval, Quality Control and Verification Administration or R.O Technical Data Sheet Type Approval Test Type Approval Cert. Inspection Report Coating Inspection Coating Technical File Safety Construction Certificate Coating Inspector Check Check (How ?) Review Issue Approve quality control system ? (How ?) Verify check Monitoring Ship Builder Ship Owner Coating Manufacturer Approve quality control system?) Paint Test Lab. Approval of Quality Control System of the ship yards? Type Approval of Costing System – by a third party (Who can be a third party?) Preparation of Coating Technical File ? Who will employ the inspectors ? Should IACS do direct coating inspection rather than monitoring? More clarification is needed

16 16 ANNEX 3 DFT measurements Note: Arrows of diagram indicate critical areas and should be understood to mean indication for both sides..4 Three(3) gauge readings for each set of primary support members and 2 gauge readings for each set of other members as indicated by the arrows in the diagram;.5 for primary support members (girders and transverses) one set of gauge readings for 2 to 3 meters run as shown in figure 3 above but not less than three sets;.6 around openings one gauge reading from each side of the opening;.7 five gauge readings per square meter (m 2 ) but not less than three gauge readings taken at complex areas (i.e. large brackets of primary support members); and.8 Additional spot checks to be taken to verify coating thickness for any area considered necessary by the coating inspector. The following verification check points of DFT are to be taken:.1 one gauge reading per 5 m 2 of flat surface areas;.2 one gauge reading at 2 to 3 meter intervals and as close as possible to tank boundaries, but not further than 15 mm from edges of tank boundaries;.3 longitudinal and transverse stiffener members: One set of gauge readings as shown below, taken at 2 to 3 meters run and not less than two sets between primary support members;

17 17 Evaluation sheet Items Expected increase of ship building cost based on evaluation of new performance standards Expected additional man power (Area/persons) Remarks Cost (USD) Man power (M/H) Construction schedule delay (Day) New facilities (USD) Total (USD) NDFT 320 ㎛ (90/10) Dust (ISO ) Soluble Slat (ISO , 9) Stripe coating Edge grinding (ISO , P2) Secondary surface preparation Block Hull Qualified Inspector Verification DFT measurement (ANNEX 3) Others (incl. provision of CTF)

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