THIS SHEET SHALL NOT FORM A PART OF THE BIDDING OR CONTRACT DOCUMENTS.
REMOVE THIS SHEET BEFORE ISSUING TO BIDDERS OR CONSTRUCTION CONTRACTORS.
DEPARTMENT OF THE NAVY
NAVAL FACILITIES
ENGINEERING COMMAND
STANDARD SPECIFICATION
NAVFAC
NFSS-C49 (JUNE 1990)
SPECIFICATION C49
ATTACK SUBMARINE CAMEL
NOTES ON THE USE OF THIS SPECIFICATION
1. STANDARD SPECIFICATION SECTIONS. The Standard Specification Sections
listed below become part of the project specification together with the
addition of other required sections prepared from NAVFAC Guide
Specifications listed in Military Bulletin 34. The Standard Specification
Sections are included herein and shall not be edited, changed, or modified
unless specific authorization is obtained from NAVFACENGCOM Code 04.
Section No.
Title
01010
Summary of Work
02935
Rubber Fendering
05501
Metal Fabrications
06500
Fiberglass Grating
09875
Metal Fabrications Coating
2.
APPLICABLE NFGS.
Not applicable.
*************************************************************************
* Prepared by: M. D. MUTTER, P.E.
Date:
*
*
*
* Approved:
EFD: LANTDIV Date:
NAVFAC:
Date:
*
*
*
* Branch Head: C. R. ROSE, P.E.
*
*
*
* Division Director: W. H. CRONE, P.E.
*
*
*
* Approved for NAVFAC: T. R. GANNON, P.E.
*
*
*
*************************************************************************
THIS SHEET SHALL NOT FORM A PART OF THE BIDDING OR CONTRACT DOCUMENTS.
REMOVE THIS SHEET BEFORE ISSUING TO BIDDERS OR CONSTRUCTION CONTRACTORS.
1
THIS SHEET SHALL NOT FORM A PART OF THE BIDDING OR CONTRACT DOCUMENT.
REMOVE THIS SHEET BEFORE ISSUING TO BIDDERS OR CONSTRUCTION CONTRACTORS.
3. STANDARD DRAWINGS. The below listed drawings forming a part of this
specification are STANDARD DRAWINGS and shall not be changed in any respect.
This list shall be edited to suit a specific project and incorporated in
Section NFGS-01011, "General Paragraphs." All modifications necessary to
suit a specific project shall be shown on new drawings prepared for that
purpose.
Drawing No.
Title
SD-1404667
General Arrangement
SD-1404668
Plan, Elevation, and Section
SD-1404669
Catwalk Details
SD-1404670
Miscellaneous Fitting Details
4. REFERENCED PUBLICATIONS. The listed designations for publications
referenced in this standard specification are those that were in effect
when this standard specification was prepared, and the current edition shall
be listed in the project specification under the appropriate section.
Designations that are known to be out of date when project specifications are
prepared should be changed to those current at that time, and the
nomenclature, types, grades, classes, etc., referenced in this standard
specification should be checked for conformance to the latest revision or
amendment. The current issues of Military Bulletin 34, ENGINEERING AND
DESIGN CRITERIA FOR NAVY FACILITIES, the DEPARTMENT OF DEFENSE INDEX OF
SPECIFICATIONS AND STANDARDS, and other applicable publication indexes should
be consulted before listing specifications and standards in the project
specifications.
TECHNICAL NOTES
A. The following items, materials, equipment, requirements, etc., are
unique for this construction and are not currently included in the NAVFAC
Guide Specifications. The information shall be added without editing, except
as specified herein, to the guide specifications indicated. The guide
specifications shall be edited to reflect the project requirements, and the
sections prepared from these guide specifications shall be included in the
project specification. Use the guide specifications current at the time the
project specification is being prepared. When paragraphs listed below are
added to a NAVFAC Guide Specification, be certain that all publications
referred to in these added paragraphs are added to paragraph 1.1 APPLICABLE
PUBLICATIONS of the guide specification.
THIS SHEET SHALL NOT FORM A PART OF THE BIDDING OR CONTRACT DOCUMENTS.
REMOVE THIS SHEET BEFORE ISSUING TO BIDDERS OR CONSTRUCTION CONTRACTORS.
2
THIS SHEET SHALL NOT FORM A PART OF THE BIDDING OR CONTRACT DOCUMENTS.
REMOVE THIS SHEET BEFORE ISSUING TO BIDDERS OR CONSTRUCTION CONTRACTORS.
I.
Guide Specification 01010, "Summary of Work."
1.
Paragraph "General Intention," specify the number of camels.
2.
Paragraph "Location," fill in information requested.
3.
Paragraph "Delivery," specify the delivery location for mooring
camels.
4.
Paragraph "Availability of Utility Services," if utility services
are available, leave in paragraph and make appropriate selections.
5.
Paragraph "Contractor's Work Area," select work area or areas which
are available to the Contractor.
5.
Delete Specification Section 01010, "Summary of Work" if NAVFAC
Guide Specifications NFGS-01010, "General Paragraphs" and NFGS-01011,
"Additional General Paragraphs" are included in the specification.
Include information from Specification Section 01010, "Summary of
Work" in the appropriate locations within Sections NFGS-01010 and
01011.
THIS SHEET SHALL NOT FORM A PART OF THE BIDDING OR CONTRACT DOCUMENTS.
REMOVE THIS SHEET BEFORE ISSUING TO BIDDERS OR CONSTRUCTION CONTRACTORS.
3
SECTION 01010
SUMMARY OF WORK
1.
GENERAL PARAGRAPHS:
1.1 General Intention: It is the declared and acknowledged intention
and meaning to provide and secure [_____] camel[s] complete in place and
ready for use.
1.2 General Description: The work includes steel tube and
miscellaneous metal framing system, rubber fendering, steel tube buoyancy,
painting, and incidental related work.
1.3 Location: The work shall be located at the [name of Naval
Station], [city], [state], approximately as shown. The exact location
will be indicated by the Contracting Officer.
1.4 Delivery: Deliver the mooring camels to the [name of Naval
Facility]. The exact location will be indicated by the Contracting
Officer. Notify the Contracting Officer [_____] days prior to the
delivery date.
1.5 Drawings Accompanying Specification: The following drawings
accompany this specification and are a part thereof. Drawings are the
property of the Government, and shall not be used for any purpose other
than that intended by the specification. [The drawings included with this
specification are half-size.] [Full-size drawings are available at the
bidder's or Contractor's expense. Information on procuring these fullsize drawings may be obtained from the Contracting Officer. Full-size
drawings may be inspected during regular working hours at the office of
the Contracting Officer.]
NAVFAC Drawing No.
Title
SD-1404667
General Arrangement
SD-1404668
Plan, Elevation, and Section
SD-1404669
Catwalk Details
SD-1404670
Miscellaneous Fitting Details
1.6 Availability of Utility Services: Pursuant to contract clauses
titled, "Availability of Utilities," reasonable amounts of the following
utilities will be made available to the Contractor [at the following rates]
[without charge]:
NFSS-C49
01010-1
Electricity
[$
per
]
Potable Water
[$
per
]
Saltwater
[$
per
]
Compressed Air
[$
per
]
Steam
[$
per
]
Natural Gas
[$
per
]
The contract drawings indicate the point at which the Government will deliver
such utilities or services and the quantity available. The Contractor shall
pay costs incurred in connecting, converting, and transferring the utilities
to the work. The Contractor will be responsible for such items as making
connections, providing transformers, and for disconnections. Clean up the
work area and dispose of debris [off station] [at a location designated by
the Contracting Officer] if any part of the mooring camels is constructed on
station.
1.7 Record Drawings: Maintain one set of full-size contract drawings
marked to show any deviations which have been made from the contract
drawings. Upon completion of the work, deliver the marked set of prints
to the Contracting Officer. Requests for partial payments will not be
approved if the marked prints are not kept current, and request for final
payment will not be approved until the marked prints are delivered to the
Contracting Officer.
1.8 Storm Protection: Storm protection includes, but is not limited to
removing loose materials, tools, and equipment from exposed locations; and
removing or securing scaffolding and other temporary work.
1.9
Contractor's Work Area:
The following options are available:
[a.
Use the area designated for on-station construction and
launching of the camels.]
[b.
Select a location and construct a launch area off station.]
[c.
Use a combination of on-station and off-station construction.]
1.9.1 The Contractor shall determine the suitability of the designated
work area for storage, assembly, and launching requirements. Take
appropriate measures to ensure that station property is not damaged by
Contractor's use.
1.9.2 Submit for review proposed operation, assembly, and launching
plans, including schedules.
NFSS-C49
01010-2
1.10 Inspection and Workmanship: Materials and workmanship shall be
subjected to inspection by the Government representative as services are
rendered. The Government shall have the right to reject inferior material
and workmanship or require its correction. If the Contractor fails to
proceed at once with the correction of inferior material and workmanship, the
Government will have such corrections made, as necessary, and charge the cost
thereof to the Contractor. The Contractor shall give the Contracting Officer
sufficient notice prior to operations that require a Government witness.
*** END OF SECTION ***
NFSS-C49
01010-3
SECTION 02935
RUBBER FENDERING
PART 1 - GENERAL
1.1 APPLICABLE PUBLICATIONS: The publications listed below form a part
of this specification to the extent referenced. The publications are
referred to in the text by the basic designation only.
1.1.1
American Society for Testing and Materials (ASTM) Publications:
D256-88
Impact Resistance of Plastics and Electrical
Insulating Materials
D638-89
Tensile Properties of Plastics
D1894-87
Static and Kinetic Coefficients of Friction of
Plastic Film and Sheeting
D2000-86
Rubber Products in Automotive Applications
D2240-86
Rubber Property - Durometer Hardness
1.2
SUBMITTALS:
1.2.1 Shop Drawings: Obtain approval prior to ordering fenders along
with templates, and erection and installation details, as appropriate, for
rubber fenders. Submittals shall be complete in detail; shall indicate
thickness, type, properties, and dimensions; and shall show construction
details, anchorage, and installation with relation to the construction.
1.2.2 Tests and Test Reports: Provide certified copies of test reports
from approved laboratories performed on previously manufactured materials.
Test reports shall be for tests accompanied by certificates from the
manufacturer certifying that the previously tested material is of the same
type, quality, manufacturer, and make as that proposed for this project.
Tests shall have been conducted not more than one year prior to the date test
reports are submitted. Test reports shall be submitted to the Contracting
Officer for record purposes.
1.3 DELIVERY, STORAGE, AND HANDLING: Deliver materials to the site in an
undamaged condition. Store material in a clean, properly drained location
out of contact with the ground. Replace damaged material with new material
or repair the damaged material in an approved manner.
PART 2 - PRODUCTS
2.1 FENDERS: Shall conform to ASTM D2000, M3BA 717 A14B13C12F17. Size
and shape of fenders shall be as indicated. Fenders shall be uniform in
NFSS-C49
02935-1
in appearance and workmanship and shall not contain porous areas, bubbles,
foreign matter, or irregularities. Fenders shall be molded, and metal
reinforcing strips shall be bonded and encapsulated. Fenders shall be
provided in two pieces for 12-foot length with a square butt joint and zero
clearance between pieces. Horizontal joints shall be staggered in each pair
of fenders provided per camel.
2.2 WEAR PADS: Shall be constructed of low friction, abrasion
resistant, high impact strength, and chemically inert material with the
following properties:
2.2.1 Frictional Properties: Friction between mild steel and wear pad
determined in accordance with ASTM D1894:
Static
0.15-0.20
2.2.2
Kinetic
0.12-0.20
Mechanical Properties:
Properties
ASTM
Test
Wear Pad
Min. Valves
Units
Tensile Strength @ Break
D638
(psi)
Elongation @ Break
D638
Izod Impact Strength
D256(1)
(ft-lb/in.)
29
Hardness, Shore "D"
D2240
-
65
Abrasion Resistance
(2)
-
100
%
5500
570
(1) Izod Impact Strength: Samples have two (15 degrees + 1/2degrees)
notches; each notch on opposite sides to a depth of 5 mm.
(2) Abrasion Resistance: Sand slurry abrasion; 2 parts water, 3 parts sand;
1" x 3" x 1" specimen; rotational speed = 1200 rpm; test period = 24 hours.
PART 3 - EXECUTION
3.1 INSTALLATION: Install rubber fenders and wear pads in accordance
with the manufacturer's recommendations and as indicated.
*** END OF SECTION ***
NFSS-C49
02935-2
SECTION 05501
METAL FABRICATIONS
PART 1 - GENERAL
1.1 APPLICABLE PUBLICATIONS: The publications listed below form a part
of this specification to the extent referenced. The publications are
referred to in the text by the basic designation only.
1.1.1
American Institute of Steel Construction (AISC) Publications:
AISC M011-80
Manual of Steel Construction (Eighth Edition)
AISC M013-83
Detailing for Steel Construction
AISC M014-84
Engineering for Steel Construction
1.1.2
American Society for Testing and Materials (ASTM) Publications:
A36/A36M-89
Structural Steel
A53-89
(Rev. A)
Pipe, Steel, Black and Hot-Dipped, Zinc-Coated
Welded and Seamless
A123-89
(Rev. A)
Zinc (Hot-Dip Galvanized) Coatings on Iron and
Steel Products
A153-82
(R 1987)
Zinc Coating (Hot-Dip) on Iron and Steel Hardware
A307-89
Carbon Steel Bolts and Studs, 60,000 psi Tensile
Strength
A563-89
(Rev. A)
Carbon and Alloy Steel Nuts
A780-80
(R 1987)
Repair of Damaged Hot-Dip Galvanized Coatings
F844-89
Washers, Steel, Plain (Flat), Unhardened for
General Use
1.1.3
American Welding Society, Inc. (AWS) Publication:
D1.1-90
1.1.4
Structural Welding Code Steel (Twelfth Edition)
Federal Specifications (Fed. Spec.):
RR-G-661E(1)
Grating, Metal, Bar Type (Floor, Except for Naval
Vessels)
NFSS-C49
05501-1
1.1.5
Military Specifications (Mil. Spec.):
MIL-I-24172A
1.2
Insulation, Plastic, Cellular Polyurethane,
Rigid Preformed and Foam-in-Place
SUBMITTALS:
1.2.1 Shop Drawings: Submit for approval by the Contracting Officer
prior to fabrication. Prepare in accordance with AISC M013 and AISC M014.
Shop drawings shall not be reproductions of contract drawings. Include
complete information for the fabrication and erection of the structure's
components, including the location, type, and size of bolts, welds, member
sizes and lengths, connection details, blocks, copes, and cuts. Use AWS
standard welding symbols.
1.2.2
Manufacturer's Certificates of Compliance:
a.
Steel
b.
Bolts, nuts, and washers
c.
Welding electrodes and rods
1.2.3 Welder, Welding Operation, and Tacker Qualification: Prior to
welding, submit certification for each welder stating the type of welding and
positions qualified for, code and procedure qualified under, date qualified,
and firm and individual certifying the qualification tests.
1.3 DELIVERY, STORAGE, AND HANDLING: Handle, store, and protect
materials in accordance with manufacturer's recommendations. Replace damaged
items with new items, or repair as approved by the Contracting Officer.
1.4 SAFETY AND HEALTH PRECAUTIONS: The foam listed in this section
contains isocyanate fumes, which are toxic. Follow safety procedures as
recommended by the manufacturer. Work in a well ventilated area or provide
air masks. Provide and require workers to use goggles, rubber gloves and
protective clothing for protection during preparation of foam.
PART 2 - PRODUCTS
2.1 MATERIALS:
with AISC M011.
Materials not specified shall be provided in accordance
2.1.1
Structural Steel:
2.1.2
Steel Pipe:
2.1.3
Bolts:
ASTM A36/A36M.
ASTM A53, Type E or S, Grade B.
ASTM A307, Grade A, galvanized.
2.1.4 Nuts: ASTM A563, Grade A, heavy hex style, except nuts under 1 1/2
inches may be provided in hex style, galvanized.
NFSS-C49
05501-2
2.1.5
Washers:
ASTM F844, galvanized.
2.1.6
Gratings:
2.1.7
Foam Insulation:
Fed. Spec. RR-G-661, with banded edges.
Mil. Spec. MIL-I-24172, Type II, Class 1.
2.2 PAINTING: As specified in Specification Section 09875, "Metal
Fabrications Coating."
2.3 GALVANIZING:
specified otherwise.
ASTM A123 or ASTM A153, as applicable, unless
2.3.1
Galvanizing Repair:
ASTM A780.
2.3.2
Welding Electrodes and Rods:
AWS D1.1.
PART 3 - EXECUTION
3.1 INSTALLATION: Installation including materials, workmanship,
fabrication, and assembly shall be provided in accordance with AISC M011,
except as modified herein.
3.2 FABRICATION: Metalwork shall be well formed to shape and size, with
sharp lines, angles, and true curves. Work shall be fabricated to allow for
expansion and contraction of materials. Provide welding and bracing of
adequate strength and durability, with tight, flush joints, dressed smooth
and clean.
3.2.1 Metal Surfaces: Shall be clean and free from mill scale,
flake rust, and rust pitting. Shearing and punching shall leave clean
true lines and surfaces. Weld permanent connections. Finish welds flush
and smooth on surfaces that will be exposed after installation.
3.2.2 Fastenings: Provide the necessary rabbets, lugs, and brackets
necessary for assembly of the work. Holes for bolts and screws shall be
drilled.
3.3 CONNECTIONS:
AISC M011.
3.4
WELDING:
Design non-detailed connections in accordance with
AWS D1.1.
[3.5 FOAM: After welding has been completed, pressure inject Mil. Spec.
MIL-I-24172 foam into closed pipes.]
NOTE: Pressure injecting foam into closed pipes increases the corrosion
protection and buoyancy. However, the foam gives off toxic fumes when
subjected to welding which will require special respirators and ventilation
of the work area when making any welding repairs. Based on the above, the
specifier shall decide if the pressure injected foam will or will not be
included.
NFSS-C49
05501-3
3.6 FIELD TESTS AND INSPECTIONS: Perform field tests, and provide
labor, equipment, and incidentals required for testing.
3.6.1 Welds: Perform the visual inspection in accordance with AWS D1.1,
Part 6. Provide AWS certified welding inspectors for fabrication and
erection inspection and testing and verification inspections. Welding
inspectors shall visually inspect and mark welds.
3.6.2 Nondestructive Testing: AWS D1.1. Test each lifting eye weld
using magnetic particle method. Defective welds shall be repaired and
retested after repair.
*** END OF SECTION ***
NFSS-C49
05501-4
SECTION 06500
FIBERGLASS GRATING
PART 1 - GENERAL
1.1 APPLICABLE PUBLICATIONS: The publications listed below form a part
of this specification to the extent referenced. The publications are
referred to in the text by the basic designation only.
1.1.1
American Society for Testing and Materials (ASTM) Publications:
D2584-68
(R 1985)
Ignition Loss of Cured Reinforced Resins
E84-89
(Rev. A)
Surface Burning Characteristics of Building Materials
1.2
SUBMITTALS:
1.2.1 Manufacturer's Catalog Data: Submit manufacturer's standard
catalog data, including load tables, for grating and accessories to the
Contracting Officer for approval.
1.3 DELIVERY, STORAGE, AND HANDLING: Deliver, store, and handle grating
and accessories in such a manner not to damage or overload grating during
construction period.
1.4 DESIGN CRITERIA: Grating shall be suitable for safely supporting a
uniform load of 100 pounds per square foot. Deflection for a simply supported
span of 36 inches shall not exceed 0.4 inch.
PART 2 - PRODUCTS
2.1
MATERIALS:
2.1.1 General: Grating shall be constructed of fiberglass reinforced
chlorendic polyester resin. Resin shall be a premium chemical grade polyester
resin which completely wets the glass fibers. Glass content shall be a minimum
of 25 percent and a maximum of 35 percent by weight as determined by ASTM D2584
for maximum sunlight and chemical resistance. ASTM E84, flame spread 25 or
less.
2.1.2 Configuration: Grating shall be one-piece construction,
rectangular grid pattern having approximately equal strength in both grid
directions. Grating depth shall be as indicated or deeper as required to
support the loads indicated. The tops of the bearing bars and cross members
shall be in the same plane. Top surface of grating shall have a nonskid finish.
2.1.3
Color:
Grating color shall be orange.
NFSS-C49
06500-1
2.1.4 Holddown Attachments: Provide with stainless steel "saddle clip"
type fasteners and stainless steel bolts.
2.2
FABRICATION:
2.2.1 Main Bars: Main bars shall be vertical within a tolerance of 0.10
inch per inch of depth. Longitudinal bow (before fastening to supports) shall
be less than 1/200 of the length. Transverse bow (before fastening to
supports) shall be less than 3/8 inch in 3 feet.
2.2.2 Crossbars: Crossbars shall not deviate from a straight line
perpendicular to the main bars by more than 3/16 inch in 3 feet. Crossbars
shall match crossbars of adjacent sections to form a continuous pattern of
straight lines. Panel width and length tolerances shall be plus or minus one
inch.
2.2.3 Openings: Provide openings in gratings indicated as required for
installing ballast. End cuts shall be coated with resin.
PART 3 - EXECUTION
3.1
INSTALLATION:
3.1.1 Grating Panels: Place grating panels on supports and properly
adjust and align. Grating shall bear at least one inch on supports. Cuts
shall be coated with resin. Stainless steel clips shall be used to tie the end
span bars of each panel together.
3.1.2 Anchorage: Space fasteners as required to overcome irregularities
and maintain grating contact with supports. Minimum anchorage of each panel
shall be two fasteners at each end and one fastener at each intermediate
support. Gratings shall be removable.
*** END OF SECTION ***
NFSS-C49
06500-2
SECTION 09875
METAL FABRICATIONS COATING
PART 1 - GENERAL
1.1 APPLICABLE PUBLICATIONS: The publications listed below form a part
of this specification to the extent referenced. The publications are
referred to in the text by the basic designation only.
1.1.1
Federal Specifications (Fed. Spec.):
QPL-24441-26
1.1.2
Paint, Epoxy-Polyamide
Military Specifications (Mil. Spec.):
MIL-P-15931E(3)
Paint, Antifouling, Vinyl (Formulas No. 121 and
No. 129)
MIL-P-24441A(SH)
Suppl 1
Paint, Epoxy-Polyamide
MIL-P-24441/1B(SH) Paint, Epoxy-Polyamide, Green Primer, Formula
150, Type I
MIL-P-24441/2B(SH) Paint, Epoxy-Polyamide, Exterior Topcoat, Haze
Gray, Formula 151, Type I
MIL-P-24441/4B(SH) Paint, Epoxy-Polyamide, Exterior Topcoat, Black,
Formula 153-Ro = 1.8, Type I
1.1.3
American Society for Testing and Materials (ASTM) Publications:
D1186-87
Nondestructive Measurement of Dry Film Thickness of
Nonmagnetic Coatings Applied to a Ferrous Base
E376-89
Measuring Coating Thickness by Magnetic-Field or
Eddy Current (Electromagnetic) Test Methods
1.1.4
Steel Structures Painting Council (SSPC) Publications:
SSPC SP 1-82
Solvent Cleaning
SSPC SP 10-89
Near-White Blast Cleaning
1.2
SUBMITTALS:
1.2.1 Manufacturer's Certificates of Compliance: Submit manufacturer's
certificates of compliance before delivery of the coating system to the job
site attesting that the materials proposed for use meet the requirements
specified as follows:
NFSS-C49
09875-1
1.2.1.1 Epoxy-Polyamide: Mil. Spec. MIL-P-24441, Type I.
Fed. Spec. QPL-24441-26 is satisfactory evidence.
Listing on
1.3 ENVIRONMENTAL CONDITIONS: Start work only when ambient and curing
temperatures are within limits of coating manufacturer's recommendations and at
least 5 degrees F above the dew point temperature.
1.4 SAFETY AND HEALTH PRECAUTIONS: Materials listed in this section
contain coal tar pitch volatiles, which are toxic. Follow safety procedures
as recommended by the manufacturer. Work in a well ventilated area. Provide
and require workers to use impervious clothing, gloves, face shields (8-inch
minimum), and other appropriate protective clothing necessary to prevent eye
and skin contact with coating materials. Keep coatings away from heat, sparks
and flame during storage, mixing, and application.
PART 2 - PRODUCTS
2.1
MATERIALS:
2.1.1 Coating: Epoxy-Polyamide, Mil. Spec. MIL-P-24441, Type I.
Provide catalyst components for coatings specific for resin components.
thinners which are compatible with the coating.
2.1.1.1
Primer:
2.1.1.2
Intermediate Coat:
2.1.1.3
Top Coat:
2.1.2
Grade B.
Use
Mil. Spec. MIL-P-24441/1.
Mil. Spec. MIL-P-24441/2.
Mil. Spec. MIL-P-24441/4.
Antifouling Paint:
Mil. Spec. MIL-P-15931, Type II, Class 2,
PART 3 - EXECUTION
3.1
CLEANING AND PREPARATION OF SURFACES:
3.1.1 Solvent Cleaning: SSPC SP 1. Remove visible oil, grease, and
drawing and cutting compounds by solvent cleaning.
3.1.2 Blast Cleaning: SSPC SP 10. After solvent cleaning, complete
surface preparation by near-white blast cleaning. Remove residual dust from
blasted surface by blowing with dry, oil-free air, vacuuming, or sweeping.
Provide surface profile of at least 1 1/2-mil thickness.
3.2
PROPORTIONING AND MIXING OF COATING SYSTEM:
3.2.1 Proportioning of Epoxy-Polyamide System: Epoxy-polyamide coatings
consist of a two-component system that includes a pigmented polyamide resin,
Component A and an epoxy resin, Component B. Mix both components in a ratio
of 1 to 1 by volume. Should the coating thicken appreciably during cold
NFSS-C49
09875-2
temperature application, and thinning is necessary, or to improve application
characteristics, add up to one pint of ethylene glycol monoethyl (EGM) ether
for each gallon of the coating.
3.2.2 Mixing of Epoxy-Polyamide System: Mix components of coating by
power stirring until a smooth, uniform consistency results. Stir coating
periodically during its induction period. Follow Table 1 for induction time
and pot life of mixed batches.
Table 1
Job Site Ambient Temperature and
Induction Time for Epoxy-Polyamide System
3.3
Ambient Temperature
Degrees F (degrees C)
Induction Time
(in hours)
40 to 50 (4.4 to 10.0)
2 at 70 degrees F
(21.1 degrees C)
50 to 60 (10.0 to 15.6)
2
60 to 70 (15.6 to 21.1)
1 to 1 1/2
70 and above (21.1 and above)
1/2 to 1
COATING APPLICATION:
3.3.1 General: Apply primer coating to dry surfaces not more than 4
hours after near-white blast cleaning. Except as specified, shop or field
apply. Apply coats of each system so that finished surfaces are free from
runs, sags, brush marks, and variations in color. Coat surfaces to minimum
thicknesses specified.
3.3.1.1 Application Method for Epoxy-Polyamide System: Allow previous
coat to dry to tack-free condition but not more than 72 hours before applying
the next coat. If more than 72 hours should elapse between coats, then clean
the surface and apply a fog coat at a minimum dry film thickness of one mil,
using the same material as the previous coat. Allow the fog coat to become
tacky, and then apply the subsequent coat.
3.3.2 Repair of Defects: Repair detected coating holidays, thin areas,
and exposed areas damaged prior to or during installation by surface
treatment and application of additional coating or by manufacturer's
recommendations. Allow a period of not less than 72 hours to pass following
the final coat before placing in immersion service.
3.3.3 Three-Coat Epoxy-Polyamide System:
thickness of between 3 mils and 4 mils.
NFSS-C49
09875-3
Apply each coat at a dry film
3.3.4 Dry Film Thickness: Provide total epoxy-polyamide system minimum
dry film thickness of 9 mils. Measure using a magnetic gauge.
3.3.5 Antifouling Paint: While the last coat of epoxy-polyamide is still
tacky, apply first coat of antifouling paint. After first coat is dry, apply
a second coat. Total minimum dry film thickness for both coats shall be
4 mils.
3.4
SURFACES TO BE COATED:
Coat steel work.
3.5
FIELD TESTS:
3.5.1 Holiday Testing: Prior to installation, test for holidays in
total coating system. Use a low-voltage holiday detector of less than 90
volts in accordance with manufacturer's instructions. After repair of any
holidays by surface treatment and application of additional coating or by
manufacturer's recommendation, retest with detector.
3.5.2 Dry Film Thickness: After repair of holidays, measure the total
dry film thickness of the epoxy-polyamide system and the antifouling paint
using a magnetic dry film thickness gauge in accordance with ASTM D1186 and
ASTM E376.
*** END OF SECTION ***
NFSS-C49
09875-4