System Requirements.pdf

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T. S. KENNEDY - FY20 Drydocking Repairs and ABS Intermediate Survey
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6933A220Q000005
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This document provides requirements for a coating system renewal and maintenance project for the training vessel T.S. Kennedy. The U.S. Department of Transportation Maritime Administration intends to award a firm fixed price contract to perform drydocking repairs, an ABS intermediate survey, and apply new coating systems. Work is to be completed between March and May 2020 at the contractor's shipyard, with the vessel returning to service by May 5th. The document outlines surface preparation and coating requirements for the underwater hull, boottop, topsides, decks, machinery spaces, cargo holds, bilges, tanks, and other areas. Coating systems specified include epoxies, anticorrosives, and nonskid topcoats. The pre-proposal site visit was held on December 17, 2019, and questions are due by December 20th. Minority, women, and disadvantaged owned firms are encouraged to compete.

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U.S. Maritime Administration Office of Ship Operations

RRF Coatings Guidelines Approved Coatings Lists

Generic Coating Systems Requirements

April 2000

NOTES

Please note that SSPC SP-1 Solvent Cleaning Standard is specified under surface preparation for each category. This is intended to be a reminder of the fact that all SSPC surface preparation specifications require SSPC SP-1 as a prerequisite where required. Certain applications (i.e.

ablative anti-fouling) may be solvent sensitive, and cleaning to SP-1 using solvents may not be recommended.

These situations will be handled with alternative cleaning methods on a case-by-case basis.

Comparable SSPC surface preparation standards for mechanical cleaning, abrasive blast cleaning and water jetting have been listed for each system. Coatings products proposed to meet these requirements should be compatible with each surface preparation standard shown. If necessary alternative coatings should be proposed if a particular product is not suitable for application over all of the listed surface preparation standards.

All thicknesses shown are dry film thickness (dft).

APPENDIX A-1: COMPLETE COATING SYSTEM RENEWAL

1. Underwater Hull (Keel to Light load line)

Surface Prep: SSPC SP-1 (Solvent Cleaning) SSPC SP-10 (Near White Blast)

SSPC SP-12/WJ-2

System: AC: Optional 1st Coat: 1 coat epoxy holding primer, suitable for immersion service, 75 micron/3 mils.

2 coats surface tolerant high solids epoxy, 100-150 microns/4-6 mils each.

AF: Optional Tie-Coat: 1 coat "solvent softenable" AC tie-coat, 50 microns/2 mils.

1 coat scrubbable, non-TBT, copper based AF, 50 microns/2 mils min.

Multiple coats controlled depletion ablative, non-TBT, copper based AF, 100-150 microns/4-6 mils each (# coats tbd per application).

1a. Boottop (Light load line to Deep load line) note: Boottop is a continuation of the Underwater Hull system. It is intended that the Underwater Hull system be carried to the Deep Load Line, and that the Boottop area differ from the Underwater Hull only in the Anti-fouling coatings. Where optional coatings are exercised in the Underwater Hull system, these coatings are also to be exercised in the Boottop area.

Surface Prep: SSPC SP-1 (Solvent Cleaning) SSPC SP-10 (Near White Blast)

SSPC SP-12/WJ2

System: AC: 2 coats surface tolerant high solids epoxy, 100-150 microns/4-6 mils each.

AF: 1 coat scrubbable, non-TBT, copper based AF, 100 microns/4 mils min.

2. Freeboard/Topside (Deep load line to top of Superstructure)

Surface Prep: SSPC SP-1 (Solvent Cleaning) SSPC SP-6 (Commercial Blast)

SSPC SP-12/WJ3

System: 1 coat zinc rich epoxy primer, 75 microns/3 mil min.

1 coat high solids epoxy, 100-150 microns/4-6 mil.

1 coat high gloss modified (acrylic) epoxy, 40-50 microns/1.5-2 mil.

note: Alternative topcoats (silicone alkyd, urethane) will continue to be listed separately.

3. Decks

Surface Prep: SSPC SP-1 (Solvent Cleaning) SSPC SP-6 (Commercial Blast)

SSPC SP-12/WJ3

System: 1 coat zinc rich epoxy primer, 75 microns/3 mil min.

1 coat high solids epoxy, 100-150 microns/4-6 mil.

and either 1 coat modified (acrylic) epoxy, 40-50 microns/1.5-2 mil.

or

MARAD Coatings Guidelines April 2000 Appendix A-1: Complete coating system renewal

1 coat acrylic epoxy with non-skid aggregate/ 1 coat sprayable non-skid, dft tbd.

note: Alternative topcoats listed for topsides are acceptable as final coat on decks where non-skid is not required. Alternative inorganic zinc deck primers are listed separately.

4. Machinery Spaces (excluding bilges)

Surface Prep: SSPC SP-1 (Solvent Cleaning) SSPC SP-3 (Power Tool Cleaning) SSPC SP-6 (Commercial Blast)

SSPC SP-12/WJ3

System: 2 coats alkyd primer, 50 microns/2 mils min each.

2 coats alkyd finish, 40-50 microns/1.5-2 mils each.

note: Interior spaces use the same system, with lesser (SSPC SP-2, Hand Tool) surface prep.

5. Cargo Holds/Pumprooms

Surface Prep: SSPC SP-1 (Solvent Cleaning) SSPC SP-3 (Power Tool Cleaning) SSPC SP-6 (Commercial Blast) where feasible

SSPC SP-12/WJ3

System: 2 coats surface tolerant high solids epoxy, 100-150 microns/4-6 mils each.

6. Bilges

Surface Prep: SSPC SP-1 (Solvent Cleaning) SSPC SP-11 (Power Tool to Bare Metal)

System: 2 coats surface tolerant high solids epoxy, 100-150 microns/4-6 mils each.

7. Cargo Tanks

Surface Prep: SSPC SP-1 (Solvent Cleaning) SSPC SP-10 (Near White Blast)

System: 2 coats high solids epoxy, 100-150 microns/4- 6 mils each note: Coatings recommended for cargo tanks must be DOD approved for carriage of milfuels (Mil-Std 23236 or MSC).

8. Ballast/Sea Water Service Tanks

Appendix A-1: Complete coating system renewal

Surface Prep: SSPC SP-1 (Solvent Cleaning) SSPC SP-10 (Near White Blast)

System: 2 coats high solids epoxy, 100-150 microns/4- 6 mils each

9. Potable Water Tanks

Surface Prep: SSPC SP-1 (Solvent Cleaning) SSPC SP-10 (Near White Blast)

System: see note below.

note: Recommended systems for potable water tanks must be approved by the National Sanitation Foundation, and be listed in ANSI/NSF Standards 60/61.

10. Separately listed coatings

a. Alternative Primers for Decks

* Solvent based Inorganic Zinc, 75-100 microns/3-4 mils

* Modified Inorganic Zinc, 75-100 microns/3-4 mils ** Waterborne Inorganic Zinc, 75-100 microns/3-4 mils

* Must be VOC compliant at 340g/ml max.

** Must be compatible with epoxy intermediate coat.

b. Alternative Topcoats for Topside/Decks

Silicone Alkyd, 40-50 microns/1.5-2 mils.

Urethane, 40-50 microns/1.5-2 mils.

c. Sprayable Non-Skid Coatings

d. Coatings for carriage of both Milfuels and Potable Water in Cargo Tanks *** note: A requirement exists for RRF tankers to be capable of carrying both milfuels and potable water in cargo tanks.

Coatings recommended for this purpose must be approved by both DOD (see cargo tanks) and the NSF *** (see potable water tanks).

*** For dual-use coatings only MARAD will consider coatings which meet DOD potable water approval (MSC, NSTM Ch. 631).

DOD potable water approval must be demonstrated.

APPENDIX A-2, MAINTENANCE OF EXISTING INTACT COATINGS SYSTEMS

Note: For the systems categories (items 1 - 9) and separately listed alternate primers/topcoats (item 10) listed below, maintenance coatings should be based on the specific manufacturer products listed in the corresponding full replacement systems in Appendix A-1. For separately listed generic coatings (item 11) intended for general purposes (i.e. surface tolerant epoxies), other products may be identified

1. Underwater Hull (Keel to Light load line) 1a. Boottop (Light load line to Deep load line)

Maintenance of underwater and boottop coatings will be determined on a case-by-case basis.

2. Freeboard/Topside (Deep load line to top of Superstructure)

Surface Prep: SSPC SP-1 (Solvent cleaning) Spot blast to SSPC SP-10 (Near White)

System: 1 spot coat zinc rich epoxy primer, 75-100 microns/3-4 mils.

1 spot coat high solids epoxy, 100-150 microns/4-6 mils.

1 full topcoat per full replacement system.

3. Decks

Surface Prep: SSPC SP-1 (Solvent Cleaning) Spot blast to SSPC SP-10 (Near White) or SSPC SP-12/WJ2

System: 1 spot coat zinc rich epoxy primer, 75-100 microns/3-4 mils.

1 spot coat high solids epoxy, 100-150 microns/4-6 mils.

1 full topcoat per full replacement system.

4. Machinery Spaces (excluding bilges)

Surface Prep: SSPC SP-1 (Solvent Cleaning) Spot clean to SSPC SP-3 (Power Tool)

System: 2 spot coats alkyd primer, 50 microns/2 mils min each.

2 spot coats alkyd finish, 40-50 microns/1.5- 2 mils each.

5. Cargo Holds/Pumprooms

Surface Prep: SSPC SP-1 (Solvent Cleaning) Spot clean to SSPC SP-3 (Power Tool)

Spot blast to SSPC SP-10 (Near White) where feasible or SSPC SP-12/WJ2

System: 2 spot coats surface tolerant high solids epoxy, 100-150 microns/4-6 mils each.

or 1 spot coat surface tolerant high solids epoxy, 100-150 microns/4-6 mils.

and 1 full coat surface tolerant high solids epoxy, 100-150 microns/4-6 mils.

6. Bilges

Surface Prep: SSPC SP-1 (Solvent Cleaning) Spot clean to SSPC SP-3 (Power Tool)

System: 2 spot coats surface tolerant high solids epoxy, 100-150 microns/4-6 mils each.

7. Cargo Tanks

Surface Prep: SSPC SP-1 (Solvent Cleaning) Spot blast to SSPC SP-10 (Near White)

System: 2 spot coats high solids epoxy, 100-150 microns/4-6 mils each note: Maintenance coatings must meet the same requirements of full replacement systems (ie. DOD, NSF approvals as appropriate).

8. Ballast/Sea Water Service Tanks

Spot repair of Ballast/Sea Water Service Tanks is not recommended. Ballast and sea water tanks are to be maintained using soft or semi-soft type coatings until such time as total replacement is required. See item 12 below.

9. Potable Water Tanks

Surface Prep: SSPC SP-1 (Solvent Cleaning) Spot blast to SSPC SP-10 (Near White)

System: see note below.

note: Recommended systems for potable water tanks must be approved by the National Sanitation Foundation, and be listed in ANSI/NSF Standards 60/61.

10. Separately listed coatings

a. Alternative Primer for Decks

* Solvent based Inorganic Zinc, 75-100 microns/3-4 mils

* Modified Inorganic Zinc, 75-100 microns/3-4 mils

Appendix A-2: Maintenance of existing intact coatings systems

** Waterborne Inorganic Zinc, 75-100 microns/3-4 mils

* Must be VOC compliant at 340g/ml max.

** Must be compatible with epoxy intermediate coat.

b. Alternative Topcoats for Topside/Decks

Silicone Alkyd, 40-50 microns/1.5-2 mils.

Urethane, 40-50 microns/1.5-2 mils.

c. Sprayable Non-Skid Coatings

d. Coatings for carriage of both Milfuels and Potable Water in Cargo Tanks note: Maintenance coatings must meet the same requirements of full replacement systems (ie. DOD, NSF approvals as appropriate).

11. General Purpose Maintenance Coatings

a. Surface Tolerant Epoxies, min 65% solids (Surface Prep

SSPC SP-2/3/6/12-WJ3)

b. Surface Tolerant, 100% Solids Epoxies for overcoating compromised, and lead contaminated surfaces (Surface Prep SSPC SP-2/3/6/12-WJ3)

c. Zinc Rich Epoxy, min 65% solids (Surface Prep SSPC SP- 3/6)

d. Alkyd Interior coatings, (Surface Prep, SSPC SP-1/2/3)

e. Latex Interior coatings, (Surface Prep, SSPC SP-1/2/3)

12. Ballast Tank Maintenance Coatings

Spot repair of Ballast/Sea Water Service Tanks is not recommended. Ballast and sea water tanks are to be maintained using soft or semi-soft type coatings until such time as total replacement is required.

a. Soft, Semi-soft and Semi-hard type Coatings for Ballast Tanks & Voids (indicate type & base)

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