Revised_Spec_for_Coating_Steel.pdf

NATIONAL OCEANIC AND ATMOSPHERIC ADMINISTRATION

(NOAA)

STANDARD SPECIFICATION

COATING SYSTEMS FOR STEEL SURFACES

1. SCOPE. This specification contains the general requirements for surface preparation and application of the coating systems most frequently used on the steel surfaces of NOAA steel ships and boats.

2. REFERENCES.

(a) SSPC: The Society for Protective Coatings Paint Application Specification No. 1 (SSPCPA 1), “Shop, Field, and Maintenance Painting” (April 1, 2000)

(b) SSPC: The Society for Protective Coatings Paint Application Standard No. 2 (SSPCPA 2), “Measurement of Dry Coating Thickness with Magnetic Gages” (June 1, 1996)

(c) SSPC: The Society for Protective Coatings Joint Surface Preparation Standard SSPCSP 10/NACE No. 2, “NearWhite Blast Cleaning” (September 1, 2000)

(d) SSPC: The Society for Protective Coatings Surface Joint Surface Preparation Standard SSPCSP 12/NACE No. 5, “Surface Preparation and Cleaning of Steel and Other Hard Materials by High and UltrahighPressure Water Jetting Prior to Recoating” (1995)

(e) SSPC: The Society for Protective Coatings Surface Preparation Specification No. 3 (SSPCSP 3), “Power Tool Cleaning” (November 1, 1982 Editorial Changes September 1, 2000)

(f) SSPC: The Society for Protective Coatings Surface Preparation Specification No. 1 (SSPCSP 1), “Solvent Cleaning” (November 1, 1982 Editorial Changes September 1, 2000)

(g) SSPC: The Society for Protective Coatings Surface Preparation Specification No. 11 (SSPCSP 11), “Power Tool Cleaning to Bare Metal” (November 1, 1987 Editorial Changes September 1, 2000)

(h) SSPC: The Society for Protective Coatings Joint Surface Preparation Standard SSPCSP 7/NACE No. 4, “BrushOff Blast Cleaning” (September 1, 2000)

3. REQUIREMENTS.

3.1 General Requirements.

3.1.1 All paint application shall applied in compliance

with reference (a) as reinforced and supplemented by this specification.

3.1.2 Comply with the manufacturers' printed

recommendations and instructions for all aspects of handling, mixing, and application of the paint materials.

3.1.3 All paint shall be delivered to the jobsite in

original, unopened containers with labels intact. All containers shall remain unopened until required for use. Each container of paint shall be clearly marked or labeled to show paint identification, date of manufacture, batch number, analysis of contents, identification of all toxic substances, and special instructions.

3.1.4 Paint shall be used before its shelf life has expired.

If a paint has no stated shelf life or is more than one year old, the manufacturer must certify in writing that the paint is suitable for use.

3.1.5 All coating thicknesses are stated in dry film

thickness (DFT). All dry film thickness determinations shall be performed in accordance with reference (b).

3.1.6 Coatings shall be applied only when the

following conditions are maintained:

a. Apply paint only to dry surfaces and when there is no chance of precipitation until after the paint has cured. The steel surface temperature shall be at least five degrees Fahrenheit above the dew point. The dew point can be presumed to be satisfactory if a thin, clearly defined film of water applied to the cleaned surface with a damp cloth evaporates within 15 minutes. Otherwise, the dew point shall be measured prior to painting by taking the drybulb temperature of the surface and the wetbulb temperature at the jobsite.

b. The air temperature and surface temperature must both be a minimum of 45 degrees Fahrenheit at all times, unless a lower temperature is specifically authorized by the paint manufacturer's printed instructions.

c. Painting is permitted only when the humidity is less than 95 percent.

d. When paint must be applied in damp or cold weather, the steel must be painted under cover and the surrounding air and the steel heated to establish the required conditions. The steel shall remain under cover or be protected until dry or until weather conditions permit its exposure.

3.1.7 Each coat of paint shall be in a proper state of cure

or dryness before the application of the succeeding coat. Paint shall be considered dry for recoating when an additional coat can be applied without the development of any detrimental film irregularities, such as lifting, wrinkling, or loss of adhesion of the undercoat. The time interval between coating applications shall be in compliance with the manufacturer's printed instructions.

3.1.8 All paint materials shall be furnished by the

Contractor and shall be applied using spray equipment, unless otherwise specified. When applying touchup coatings to small areas disturbed by other work, brushes and rollers may be used.

3.1.9 Comply with and enforce all safety and environmental

protection regulations relative to removal, disposal, mixing, and application of paints and other materials.

3.1.10 Mask, tape, cover, and otherwise protect all

equipment, machinery, cables, piping, insulation, glass, furnishings, and other government materials from damage, overspray and contamination. Remove and reinstall parts and loose gear as necessary to avoid damage.

3.1.11 Plug, wrap, blank, cover, or mask all openings as

needed to prevent entry of blast materials into the ship or boat and to confine blast materials inside the compartment being sandblasted. Install industrial foam filter materials on the intake and exhaust of ventilation systems which will be in use. Renew filter materials when air flow becomes restricted.

3.1.12 When surface preparation and coating of a

compartment or surface is specified, included shall be all plating, frames, longitudinals, beams, stiffeners, brackets, baffles, and other structural steel members.Steel ladders in tanks, voids, and cofferdams are also to be included.

3.1.13 Surface preparation and paint application of shell

plating and frames below the Load Waterline shall be accomplished only while the ship is in drydock, unless otherwise and specifically authorized.

3.1.14 Where colors are not specified in this specification, the color for coatings shall be as specified in other procurement documents or specifications. Where colors are not specified elsewhere, the colors shall be selected by the COTR or other NOAA representative responsible for acceptance of the work.

3.2 Surface Preparation.

3.2.1 Unless otherwise specified, all steel surfaces shall

be prepared by sandblasting to a "near white" surface in accordance with reference (c). or prepared by "ultrahigh pressure water jetting” to a visual surface preparation condition of WJ2 in accordance with reference (d).

3.2.2 When other procurement documents or specifications

require "power tool clean" surface preparation, the therein specified steel surfaces shall be prepared in accordance with reference (e).

3.2.3 When other procurement documents or specifications

require "solvent clean" surface preparation, the therein specified steel surfaces shall be prepared in accordance with reference (f).

3.2.4 When other procurement documents or specifications

require "power tool clean to bare metal" surface preparation, the therein specified steel surfaces shall be prepared in accordance with reference (g).

3.2.5 When other procurement documents or specifications

require “brushoff blast cleaning” surface preparation, the therein specified steel surfaces shall be prepared in accordance with reference (h).

3.2.6 The surfaces to be painted shall have the specified

surface preparation at the time of application of the paint. If the surface is degraded or contaminated subsequent to surface preparation and prior to painting, the surface shall be restored before paint application.

3.2.7 In order to prevent degradation or contamination of

the prepared surfaces, the first coat of paint shall be applied as soon as possible after the surfaces have been prepared. The first coat shall always be applied the same day as surface preparation is completed. Succeeding coats shall be applied before contamination of the under surface occurs.

3.2.5 After surface preparation, surfaces shall be

brushed with clean brushes, blown off with compressed air, or cleaned by vacuum to remove all traces of blast products and dust.

3.2.6 Whenever sandblasting or spray painting is specified

for surface preparation of exterior steel surfaces at a Government facility, or when applicable regulations and laws prohibit release of blast materials and paint into the atmosphere, the surfaces shall be enclosed in a cover adequate to contain the blast materials and paint.

3.2.7 Cleaning and painting shall be so scheduled that

detrimental amounts of dust or other contaminants do not fall on wet, newlypainted surfaces.

3.3 Coating Systems. Following acceptance of the

surface preparation by the COTR, apply the coating system specified in the procurement document or detail specification and defined below. It is understood that newer coating systems have been and are being developed that may supercede the defined coating systems. The contractor may recommend application of these newer coating systems through the use of a Condition Report which is subject to acceptance by the

COTR.