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IMO Performance Standard for Protective Coatings

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Stripe coats shall be applied by brush or roller. Roller to be used for scallops, ratholes, etc. only. COATING STANDARD. 8. COATING STANDARD ... – PowerPoint PPT presentation

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Title: IMO Performance Standard for Protective Coatings


1
IMO PerformanceStandard for Protective
Coatings
19th June 2006
Joo-Sung Park/Statutory Service Team
2
Amendment to SOLAS regulation
  • 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 2008
  • Scope
  • Maintenance and Repair Guidelines to be
    developed later
  • 2. SOLAS Reg. XII/6.3(for bulk carriers) deleted
    as of 1 July 2008

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
3
APPLICATION DATE
Contract date base Vessel(s) contracted on or
after 1st July 2008 or
Delivery date base Vessel(s) delivered on or
after 1st of July 2012
APPLICATION SCOPE
  • 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

EARLY IMPLIMENTATION ? By MSC circular to be
approved by MSC 82
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)
4
The Contents of PSPC ? (MSC 81/WP.13,
Annex 3)
  • PURPOSE
  • DEFINITIONS
  • GENERAL PRINCIPLES
  • COATING STANDARD
  • COATING SYSTEM APPROVAL
  • COATING INSPECTION REQUIREMENTS
  • VERIFICATION REQUIREMENTS
  • ALTERNATIVE SYSTEM

ANNEX 1 TEST PROCEDURES FOR COATING
QUALIFICATION FOR BALLAST TANK OF ALL TYPES SHIP
AND DOUBLE-SIDE SKIN SPACES OF BULK CARRIERS
COATING - APPENDIX 1 TEST ON SIMULATED BALLAST
TANK CONDITION - APPENDIX 2 CONDENSATION CHAMBER
TEST ANNEX 2 EXAMPLE OF DAILY LOG AND
NON-CONFORMITY REPORT ANNEX 3 DRY FILM THICKNESS
MEASUREMENTS ANNEX 4 STANDARDS REFERENCE TO THE
PERFORMANCE STANDARDS ON PROTECTIVE COATINGS
5
DEFINITIONS
  • DFT, NDFT
  • Edge Grinding
  • Hard coating
  • Target useful life 15 years
  • Technical Data Sheet
  • GOOD condition

GENERAL PRINCIPLES
- 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
6
COATING STANDARD
Coating system
  • - Selection of coating system Deck and tank
    boundaries? to withstand repeated heating/cooling
  • - Coating typeepoxy 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

Job specification
  • Rust, grease, dust, salt, oil, etc. shall be
    removed prior to coating
  • Abrasive inclusions embedded in the coating
    shall be removed

7
COATING STANDARD
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.
Stripe coats shall be applied by brush or roller.
Roller to be used for scallops, ratholes, etc.
only.
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
The application scope of brush may have a
different interpretation according to the
personnel knowledge, background and experiences.
8
COATING STANDARD
NDFT
NDFT 320 Microns with 90/10 rule -
max. TDFT -gt according to manufactures spec.
- Gauge type SSPC-PA2
  • About 7 of paint material cost increase
  • 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)
Current Standard NDFT
NDFT 300 Microns with 80/20 rule
Sampling test result DFT measuring based on the
Current Standard 2 coats 300 ?
9
COATING STANDARD
Primary surface preparation
  • - Blasting and profile Sa 2 ½ (profile 30- 75
    ?) (average?) ISO 8501-1
  • restriction humidity 85 or above, surface
    temp. below 3? - ISO 8503-1/3
  • surface cleanliness and roughness profile
    check before application
  • - Salt limit(NaCl) 50 mg/? (ISO 8502-9
    Conductivity test)
  • - Shop primer
  • Inhibitor free zinc silicate based or
    equivalent
  • Compatibility with main coating system shall
    be confirmed by coating manuf.

10
COATING STANDARD
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
8501-3 grade P2.
Edges to be treated to a rounded radius of
minimum 2mm, or subjected to three pass grinding
or at least equivalent process before painting.
A strong necessity for development of a grinding
tool or process to mitigate the huge burden for
labor and progress management.
The amount grinding activities will tremendously
be increased at block assembly stage.
11
COATING STANDARD
SSP surface treatment
At block assembly stage
  • Damaged surface of shopprimer and welds SIS Sa
    2½ ( ISO 8501-1)
  • 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)
  • Intact shop primer not compatible with the main
    coat Sa 2 (70 removal)

After erection
  • Butts SIS St 3 or better or Sa 2½ where
    practicable. (ISO 8501-1)
  • Small damages up to 2 of total area St 3
  • Contiguous damages over 25m2 or over 2 of the
    total area of the tank Sa 2½ (definition of
    damage, calculation of damaged area?, ???? ???
    ???)

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.
12
COATING STANDARD
i Dust grade 1 for dust size class 3
to 5 by means of adhesive tape test (ISO
8502-3) Ii Dust size classes 1 and 2
shall be removed if visible (naked eye)
SSP - DUST
Dust Size (ISO 8502-3) 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
Sampling of Current Standard for DUST grade
Floor
Wall
Ceiling
13
COATING STANDARD
ISO 8502-6 Extraction methodology (Bresel only
?) ISO 8502-9 Assessment of soluble salt by
conduct metric
Soluble salt limit
50 mg/m2 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
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 6.2
  • Recordings results from the
  • inspection shall be recorded by the
  • inspector and shall be included in the
  • CTF daily log and NC report.

Current Status for Certified Coating Inspector
(May, 2006)
Increased inspection activities for DFT
measurement acc. to Annex 3
Increased activity for the test such as dust,
soluble salt, profiles, etc.
Increased documentation for provision of CTF.
Other activity for approval of the quality
control system
15
VERIFICATION REQUIREMENTS
Type Approval, Quality Control and
Verification
Approve quality control system?)
Administration
Coating
Type Approval of Costing System by a third
party (Who can be a third party?)
or R.O
Manufacturer
Technical Data
Check
Sheet
Type Approval
Paint
Test Lab.
Test
Type Approval
Issue
check
Cert.
Preparation of Coating Technical File ?
Approve quality control system ? (How ?)
Ship Builder
Verify
Coating
Who will employ the inspectors ?
Inspector
Coating
Inspection
Monitoring
Should IACS do direct coating inspection rather
than monitoring?
Check (How ?)
Inspection
Report
Approval of Quality Control System of the ship
yards?
Coating
Review
Technical File
Ship Owner
More clarification is needed
Safety
Issue
Construction
Certificate
16
ANNEX 3
DFT measurements
The following verification check points of DFT
are to be taken .1 one gauge reading per 5 m2 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
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 (m2) 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.
17
Evaluation sheet
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