USACE / NAVFAC / AFCESA UFGS-09 97 13.27 (January 2007)
------------------------------
Preparing Activity: NAVFAC Superseding
UFGS-09 97 13.27 (July 2006)
UNIFIED FACILITIES GUIDE SPECIFICATIONS
References are in agreement with UMRL dated January 2009
SECTION 09 97 13.27
EXTERIOR COATING OF STEEL STRUCTURES
01/07
NOTE: This guide specification covers the requirements for zinc-rich epoxy/epoxy/polyurethane
coating systems for exteriors of new Navy and Air Force steel structures, such
as fuel tanks, water tanks, aboveground piping, etc.
Edit this guide specification for project specific requirements by adding, deleting,
or revising text. For bracketed items, choose applicable items(s) or insert
appropriate information.
Remove information and requirements not required in respective project, whether
or not brackets are present.
Comments and suggestions on this guide specification are welcome and should
be directed to the technical proponent of the specification. A listing of technical
proponents, including their organization designation and telephone number, is
on the Internet.
Recommended changes to a UFGS should be submitted as a Criteria Change Request
(CCR).
NOTE: This guide specification is intended for coating of new structures and
coating of existing structures where all existing coating material is being
removed to bare metal. To determine the requirements for maintenance of an
existing coating, a coating inspection or coating condition survey (CCS), as
described herein, should be accomplished prior to designing the coating project.
Without a competent inspection, there is no reliable way to determine the type
or condition of the existing coating system. Without knowing the existing conditions,
proper (effective and financially supportable) surface preparation or coating
system selection cannot be made.
NOTE: This specification is for general use on steel structures, or miscellaneous
steel appurtenances, in atmospheric service (non-immersion). This includes
fuel tanks, water tanks, aboveground piping, cranes, towers, etc. It should
also be used for enclosed or exposed structural steel in buildings such as hangars,
acoustical enclosures, or other facilities where a high-performance coating
system is desired. This coating system is ideal for repairing and coating of
galvanized surfaces. Repair galvanizing with the zinc-rich primer, and apply
general coats of intermediate and topcoat to all surfaces.
NOTE: This specification should be edited by an SSPC certified Protective Coatings
Specialist (PCS) that has five or more years of experience preparing coating
specifications.
The designer should not alter the products and processes specified herein without
thorough knowledge of the need for the changes and the implications of those
changes.
NOTE: This guide specification complies with the intent of Air Force ETL 86-4,
as revised on 28 April, 1999 to eliminate the "second primer coat."
NOTE: The metric standard for measuring coating thickness is microns (25.4
microns=1 mil - use nominal 25 microns=1 mil).
NOTE: This specification is for an industry standard, 3 Coat, thin film, coating
system that is compliant with EPA VOC regulations as of June 2000:
- Epoxy coats 350 g/l 2.8 lbs/gal max. VOC
- Polyurethane Topcoat 350 g/l 2.8 lbs/gal max. VOC
The designer shall review state and local, regulations and determine whether
the coating in this Section complies with restrictions on volatile organic components
(VOC) and other chemical constituents.
NOTE: Previous versions of this specification have included a requirement for
surfaces to be abrasive blasted to SSPC SP 7, inspected, and repaired, prior
to coating. That requirement has been removed from this specification, and
if required for a repair project, it should be included in the structural repair
Section of the project specification. Tailor the paragraph to the needs of
cleaning that will be required in preparation for repairs, and note that the
abrasive blasting for inspection should be accomplished in such a manner that
it does not conflict with any surface condition requirements in this Section,
such as creating excessive surface profile that may require excessive primer
thickness. For repair projects, specify appropriate portions of the steel surfacing
requirements (according to NACE RPO178) from Section 33 56 13.13 STEEL TANKS
WITH FIXED ROOFS.
NOTE: For purposes of this specification, the term "maintenance coating" refers
to maintenance overcoating as opposed to complete removal of coatings and recoating.
For maintenance coating designs, or to determine if maintenance overcoating
is appropriate, a coating condition survey (CCS) should be accomplished. The
CCS should be accomplished by personnel from a business that routinely performs
coating evaluations, and the individual investigator should be Certified by
SSPC as a Protective Coatings Specialist. The CCS should be sufficiently detailed
to provide all technical information about the coatings, and structures to be
coated, required to properly design the project. At a minimum, the CCS should
provide a detailed report of:
1. Existing coating conditions, including condition of coating film, and the
existence of potentially hazardous substances that may impact coating management
(i.e. lead, cadmium, chromium);
2. Analysis of remaining coating life, suitability of overcoating, and technical
requirements for overcoating;
3. Technical recommendations for the most cost effective management of existing
coating systems, including any hazardous materials present in paint film; and
4. Any other information of interest to the coating system management that
should be identifiable by an individual trained and experienced in the field
of coating analysis, coating failure analysis, and coating design.
The scope of the CCS should be tailored to the specific project, and it should
be recognized that while multiple coating failures or deficiencies may look
similar to the untrained eye, the risks of generalizing to save evaluation costs
are potentially very high. The cost of large-scale failure of the overcoating,
and complete replacement of the coating system, is far more than the cost of
a CCS for all but the smallest projects.
The risks of overcoating can usually be avoided by designing project to remove
all existing coatings to bare metal, then providing appropriate surface preparation
and coating application. However, the extra costs of the coating removal, especially
if containing hazardous material, along with the cost of surface preparation
to SSPC SP 10 Abrasive Blast to Near-White Metal, may be exorbitant compared
to the costs of maintenance overcoating where the existing coating system is
in fair-to-good condition.
Additionally, NAVFAC Design Policy Letter DPL-09B-0001, Lead-containing Paint
on Non-residential Structures of 26 Mar 92 provides guidance for managing paints
containing lead and other hazardous materials in place. The fact that lead
was highly used as a primer is indicative of its value to the corrosion control
industry. Premature removal of sound lead primer is not considered to be a
good management practice.
Activities should consider an annual CCS to survey all structures to be authorized
for design in the coming year. When accomplished for multiple projects, the
per-structure cost will decrease. By accomplishing this survey prior to design,
the basis for design is fully identified.
The CCS can also be a very useful tool when used to screen structures for maintenance
painting requirements. A CCS can be scoped to provide a general inspection
of many structures to screen for near-term overcoating or recoating requirements,
and subsequent investigation can be made to provide appropriate details for
project planning and design.
It should be pointed out that the aesthetic features of a coating do not define
the coating condition; they only describe how the coating looks. Many coating
systems have been replaced when only the topcoat is in need of "refurbishment."
Likewise, many structures such as water tanks and fuel tanks have had complete
coating replacement when only the roof coating needed replacement. A CCS can
identify the weak components as well as the satisfactory components, and propose
solutions to make maximum use of existing resources.
SSPC: The Society for Protective Coatings (SSPC), has published a Technology
Update titled SSPC TU 3 Maintenance Overcoating. This document should be used
as a guide for scoping the CCS, for accomplishing the CCS, and for designing
the coating work.
NOTE: Designers are encouraged to contact J. H. Brandon, NFESC Code 63, 757
322-4645, Joseph.Brandon@navy.mil prior to beginning a new Navy design.
NOTE: Designers are encouraged to contact the Air Force Civil Engineering Corrosion
Program Manager at HQ AFCESA/CESM, 139 Barnes Drive, Ste 1, Tyndall AFB, FL
32403, Tel 850-283-6217, prior to beginning new Air Force design.
PART 1 GENERAL
1.1 REFERENCES
NOTE: This paragraph is used to list the publications cited in the text of
the guide specification. The publications are referred to in the text by basic
designation only and listed in this paragraph by organization, designation,
date, and title.
Use the Reference Wizard's Check Reference feature when you add a RID outside
of the Section's Reference Article to automatically place the reference in the
Reference Article. Also use the Reference Wizard's Check Reference feature
to update the issue dates.
References not used in the text will automatically be deleted from this section
of the project specification when you choose to reconcile references in the
publish print process.
The publications listed below form a part of this specification to the extent referenced. The publications are
referred to within the text by the basic designation only.
[ASTM INTERNATIONAL (ASTM)ASTM C 920(2008) Standard Specification for Elastomeric Joint SealantsASTM D 1200(1994; R 2005) Viscosity by Ford Viscosity CupASTM D 3276(2007) Painting Inspectors (Metal Substrates)ASTM D 3925(2002) Sampling Liquid Paints and Related Pigmented CoatingsASTM D 4285(1983; R 2006) Indicating Oil or Water in Compressed AirASTM D 7127(2005) Measurement of Surface Roughness of Abrasive Blast Cleaned Metal Surfaces using a Portable Stylus Instrument][INTERNATIONAL ORGANIZATION FOR STANDARDIZATION (ISO)ISO 9001(2008) Quality Management Systems- Requirements][THE SOCIETY FOR PROTECTIVE COATINGS (SSPC)SSPC AB 2(1996; E 2004) Cleanliness of Recycled Ferrous Metallic AbrasiveSSPC AB 3(2003; E 2004) Newly Manufactured or Re-Manufactured Steel AbrasivesSSPC Guide 12(1998; E 2004) Guide for Illumination of Industrial Painting ProjectsSSPC Guide 6(2004) Guide for Containing Debris Generated During Paint Removal OperationsSSPC PA 1(2000; E 2004) Shop, Field, and Maintenance PaintingSSPC PA 2(2004) Measurement of Dry Coating Thickness With Magnetic GagesSSPC QP 1(1998; E 2004) Standard Procedure for Evaluating Painting Contractors (Field Application to Complex Industrial Structures)SSPC QP 5(1999; E 2004) Standard Procedure for Evaluating the Quality of Coating and Lining Inspection CompaniesSSPC QS 1(2004) Standard Procedure for Evaluating a Contractor's Advanced Quality Management SystemSSPC SP 1(1982; E 2004) Solvent CleaningSSPC SP 10(2007) Near-White Blast CleaningSSPC SP 7(2007) Brush-Off Blast CleaningSSPC SP COM(2004) Surface Preparation Commentary for Steel and Concrete SubstratesSSPC VIS 1(2002; E 2004) Guide and Reference Photographs for Steel Surfaces Prepared by Dry Abrasive Blast Cleaning][U.S. DEPARTMENT OF DEFENSE (DOD)MIL-A-22262(Rev B; Am 2) Abrasive Blasting Media Ship Hull Blast CleaningMIL-DTL-24441(Rev C; Supp 1; INT Amd 1) Paint, Epoxy-PolyamideMIL-DTL-24441/19(Rev B) Paint, Epoxy-Polyamide, Zinc Primer, Formula 159, Type IIIMIL-DTL-24441/31(Rev A) Paint, Epoxy-Polyamide, White, Formula 152, Type IVMIL-PRF-85285(Rev D; Am 1, Am 2) Coating: Polyurethane Aircraft and Support EquipmentMIL-STD-161(Rev G) Identification Methods for Bulk Petroleum Products Systems Including Hydrocarbon Missile Fuels][U.S. GENERAL SERVICES ADMINISTRATION (GSA)FED-STD-595(Rev B; Am 1) Colors Used in Government Procurement][U.S. NATIONAL ARCHIVES AND RECORDS ADMINISTRATION (NARA)29 CFR 1910-SUBPART ZToxic and Hazardous Substances29 CFR 1910.1000Air Contaminants29 CFR 1910.134Respiratory Protection29 CFR 1926.59Hazard Communication]1.2 DEFINITIONS
Definitions are provided throughout this Section, generally in the paragraph where used, and denoted by capital
letters.
1.3 SUBMITTALS
NOTE: Submittals listed here are important to the project and to the project
records. In order to improve quality, most of these submittals have been changed
from gov't approval to contractor approval, thereby shifting final application
responsibility to the contractor.
A “G” following a submittal item indicates that the submittal requires Government approval.
For submittals requiring Government approval on Army projects, a code of up
to three characters within the submittal tags may be used following the "G"
designation to indicate the approving authority. Codes for Army projects using
the Resident Management System (RMS) are: "AE" for Architect-Engineer; "DO"
for District Office (Engineering Division or other organization in the District
Office); "AO" for Area Office; "RO" for Resident Office; and "PO" for Project
Office. Codes following the "G" typically are not used for Navy projects.
Submittal items not designated with a "G" are considered as being for Contractor
Quality Control approval.
Government approval is required for submittals with a "G" designation; submittals not having a "G" designation
are [for Contractor Quality Control approval.][for information only. When used, a designation following the
"G" designation identifies the office that will review the submittal for the Government.] The following shall
be submitted in accordance with Section 01 33 00 SUBMITTAL PROCEDURES:
SD-05, Design Data
Containment System
SD-06 Test Reports
Joint Sealant Qualification Test Reports
Coatings Qualification Test Reports
Metallic Abrasive Qualification Test Reports
Coating Sample Test Reports
Abrasive Sample Test Reports
Inspection Report Forms
Daily Inspection Reports
Recycled Metallic Abrasive Field Test Reports (Daily and Weekly)
SD-07 Certificates
Contract Errors, Omissions, and Other Discrepancies
Corrective Action Procedures
Coating Work Plan
Qualifications of Certified Industrial Hygienist (CIH)
Qualifications Of Individuals Performing Abrasive Blasting
Qualifications of Certified Protective Coatings Specialist (PCS)
Qualifications of Coating Inspection Company
Qualifications of QC Specialist Coating Inspector
Qualifications of Testing Laboratory for Coatings
Qualifications of Testing Laboratory for Abrasive
Qualifications of Coating Contractors
Joint Sealant Materials
Coating Materials
Coating System Component Compatibility
Non-metallic Abrasive
Metallic Abrasive
SD-08 Manufacturer's Instructions
Joint Sealant Instructions
Coating System Instructions
SD-11 Closeout Submittals
Disposal of Used Abrasive
Inspection Logbook; G, [_____]
1.4 QUALITY ASSURANCE
1.4.1 Contract Errors, Omissions, and Other Discrepancies
Submit all errors, omissions, and other discrepancies in contract documents the Contracting Officer within 30
days of contract award for all work covered in this Section, other than the work that will not be uncovered until
a later date. All such discrepancies shall be addressed and resolved, and the Coating Work Plan modified, prior
to beginning the Initial and Follow-Up phases of work. Discrepancies that become apparent only after work is
uncovered shall be identified at the earliest discoverable time and submitted for resolution. Schedule time
(Float) should be built into the project schedule at those points where old work is to be uncovered or where
access is not available during the first 30 days after award, to allow for resolution of contract discrepancies.
1.4.2 Corrective Action (CA)
CA shall be included in the Quality Control Plan.
1.4.2.1 Corrective Action Procedures
Develop procedures for determining the root cause of each non-compliance, developing a plan to eliminate the
root cause so that the non-compliance does not recur, and following up to ensure that the root cause was eliminated.
Develop Corrective Action Request (CAR) forms for initiating CA, and for tracking and documenting each step.
1.4.2.2 Implement Corrective Action
The Contractor shall take action to identify and eliminate the root cause of each non-compliance so as to prevent
recurrence. These procedures shall apply to non-compliance in the work, and to non-compliance in the QC System.
Corrective actions shall be appropriate to the effects of the non-compliance encountered. Each CAR shall be serialized,
tracked in a Log to completion and acceptance by the Contracting Officer, and retained in project records. The
Corrective Action Log, showing status of each CAR, shall be submitted to the Contracting Officer monthly. A
CAR may be initiated by either the Contractor or the Contracting Officer. The Contracting Officer must approve
each CAR at the root cause identification stage, the plan for elimination stage, and the close out stage after
verification that the root cause has been eliminated.
1.4.3 Coating Work Plan
NOTE: For maintenance painting, add requirement for pre-work determination of
the existing surface profile. If paint removal is specified in another Section,
such as a blast cleaning prior to inspection or repair, or in the lead removal
Section, include this evaluation of existing profile such that the paint removal
operation does not create excessive profile.
This work plan shall be considered as part of the Quality Control Plan.
Provide procedures for reviewing contract documents immediately after award to identify errors, omissions, and
discrepancies so that any such issues can be resolved prior to project planning and development of detailed procedures.
Provide procedures for verification of key processes during Initial Phase to ensure that contract requirements
can be met. Key processes shall include surface preparation, coating application and curing, inspection, and
documentation, and any other process that might adversely impact orderly progression of work.
Provide procedures for all phases of coating operations, including planned work, rework, repair, inspection,
and documentation. Address mobilization and setup, surface preparation, coating application, coating initial
cure, tracking and correction of noncompliant work, and demobilization. Coordinate work processes with health
and safety plans and confined space entry plans. For each process, provide procedures that include appropriate
work instructions, material and equipment requirements, personnel qualifications, controls, and process verification
procedures. Provide procedures for inspecting work to verify and document compliance with contract requirements,
including inspection forms and checklists, and acceptance and rejection criteria.
[ Provide procedures for determining the existing surface profile under paint, and procedures for ensuring that
the profile is not increased beyond the maximum profile specified herein.
]Provide procedures for correcting noncompliant work. Detailed procedures are required in advance to avoid delays
in meeting overcoat windows as well as to avoid delays in production. Provide procedures for repairing defects
in the coating film, such as runs, drips, sags, holidays, overspray, as well as how to handle correct coating
thickness noncompliance, any other areas of repair or rework that might be adversely affected by delays in preparing
and approving new procedures.
If a procedure is based on a proposed or approved request for deviation, the deviation shall be referenced.
Changes to procedures shall be noted by submittal number and date approved, clearly delineating old requirements
and new requirements, so that the records provide a continuous log of requirements and procedures.
1.4.4 Design Data
1.4.4.1 Containment System
Submit complete design drawings and calculations for the scaffolding and containment system, including an analysis
of the loads which will be added to the structure by the containment system and waste materials. A registered
engineer shall approve calculations and scaffold system design.
1.4.5 Test Reports
1.4.5.1 Joint Sealant Qualification Test Reports
Submit test results from independent laboratory of representative samples of joint sealant material. Samples
must have been tested within the last three years. Submit results as required in paragraph QUALITY ASSURANCE
PROVISIONS of ASTM C 920. Note that testing in accordance with QUALITY ASSURANCE PROVISIONS is a pre-qualification
requirement.
1.4.5.2 Coatings Qualification Test Reports
Submit test results from independent laboratory of representative samples of each coating material. U.S. Department
of Defense laboratories are considered to be independent laboratories for purposes of compliance with "QUALIFICATION
INSPECTION" requirements herein. Samples must have been tested within the last three years. Submit results
for epoxy materials as required in paragraph QUALIFICATION INSPECTION of MIL-DTL-24441, and as revised by paragraph
COATING SYSTEM herein. Submit results for polyurethane materials as required in paragraph QUALIFICATION INSPECTION
of MIL-PRF-85285, and as revised by paragraph COATING SYSTEM herein. Note that requirement for QUALIFICATION
INSPECTION is a pre-qualification requirement, and involves the same testing required for listing in the Qualified
Products List of the respective material. See appropriate Military Specification for specific test requirements.
1.4.5.3 Metallic Abrasive Qualification Test Reports
Submit results for abrasive as required in paragraph 4 REQUIREMENTS of SSPC AB 3. Submit test results from independent
laboratory of representative samples of each abrasive to be used on the jobsite. Samples must have been tested
within the last three years. Note that this testing is for the purpose of prequalifying the abrasive.
1.4.5.4 Recycled Metallic Abrasive Field Test Reports (Daily and Weekly)
Submit test results from independent laboratory of daily and weekly Quality Control testing required by SSPC AB 2
, as modified in paragraph ABRASIVE.
1.4.6 Qualifications
1.4.6.1 Qualifications of Certified Industrial Hygienist (CIH)
Submit name, address, telephone number, FAX number, and e-mail address of the independent third party CIH. Submit
documentation that hygienist is certified by the American Board of Industrial Hygiene in comprehensive practice,
including certification number and date of certification/recertification. Provide evidence of experience with
hazards involved in industrial coating application work.
1.4.6.2 Qualifications of Certified Protective Coatings Specialist (PCS)
Submit name, address, telephone number, FAX number, and e-mail address of the independent third party PCS. Submit
documentation that specialist is certified by SSPC: The Society for Protective Coatings (SSPC) as a PCS, including
certification number and date of certification/recertification. If the PCS is employed by the same coating inspection
company to which the coating inspector is employed, this does not violate the independent third-party requirements.
The PCS shall remain certified during the entire project, and the Contracting Officer shall be notified of any
change in certification status within 10 days of the change. The PCS shall not be the designated coating inspector.
1.4.6.3 Qualifications of Coating Inspection Company
Submit documentation that the coating inspection company that will be performing all coating inspection functions
is certified by SSPC to the requirements of SSPC QP 5 prior to contract award, and shall remain certified while
accomplishing any coating inspection functions. The coating inspection company must remain so certified for
the duration of the project. If a coating inspection company's certification expires, the firm will not be allowed
to perform any inspection functions, and all surface preparation and coating application work must stop, until
the certification is reissued. Requests for extension of time for any delay to the completion of the project
due to an inactive certification will not be considered and liquidated damages will apply. Notify the Contracting
Officer of any change in coating inspection company certification status.
1.4.6.4 Qualifications of QC Specialist Coating Inspector
Submit documentation that each coating inspector is employed, and qualified to SSPC QP 5, Level III, by the selected
coating inspection company. Each inspector shall remain employed by the coating inspection company while performing
any coating inspection functions.
1.4.6.5 Qualifications Of Individuals Performing Abrasive Blasting
Submit name, address, and telephone number of each person that will be performing abrasive blasting. Submit
documentation that each blaster is qualified by SSPC to the SSPC C-7 Dry Abrasive Blaster Qualification Program.
Each blaster shall remain qualified during the entire period of abrasive blasting, and the Contracting Officer
shall be notified of any change in qualification status.
1.4.6.6 Qualifications of Testing Laboratory for Coatings
Submit name, address, telephone number, FAX number, and e-mail address of the independent third party laboratory
selected to perform testing of coating samples for compliance with specification requirements. Submit documentation
that laboratory is regularly engaged in testing of paint samples for conformance with specifications, and that
persons performing analyses are qualified.
1.4.6.7 Qualifications of Testing Laboratory for Abrasive
Submit name, address, telephone number, FAX number, and e-mail address of the independent third party laboratory
selected to perform testing of abrasive for compliance with specification requirements. Submit documentation
that laboratory has experience in testing samples of abrasive for conformance with specifications, and that persons
performing analyses are qualified.
1.4.6.8 Qualifications of Coating Contractors
NOTE: If project involves removal of paint containing hazardous materials,
add requirement for SSPC QP-2 certification in section of specification where
the hazardous paint removal is specified, generally UFGS 02 83 13.00 20 or 02
82 33.13 20.
NOTE: Solicitations requiring certification for prequalification should point
out the existence and location of the certification requirement on the PROJECT
INFORMATION FORM. This requirement must be pointed out in the solicitation
documents for the "prior to contract award" requirement to be enforceable.
Certification is a special responsibility requirement pursuant to FAR 9.104-2.
This is analogous to requiring bidders to have a specified level of experience
or expertise and GAO has sustained these types of special requirements.
All Contractors and Subcontractors that perform surface preparation or coating application shall be certified
to either ISO 9001 or SSPC QP 1 and SSPC QS 1 prior to contract award, and shall remain certified while accomplishing
any surface preparation or coating application. The painting Contractors and painting Subcontractors must remain
so certified for the duration of the project. If a Contractor's or Subcontractor's certification expires, the
firm will not be allowed to perform any work until the certification is reissued. Requests for extension of
time for any delay to the completion of the project due to an inactive certification will not be considered and
liquidated damages will apply. Notify the Contracting Officer of any change in Contractor certification status.
1.4.6.9 Joint Sealant Materials
Provide manufacturer's certification of conformance to contract requirements.
1.4.6.10 Coating Materials
Provide manufacturer's certification of conformance to contract requirements.
1.4.6.11 Coating System Component Compatibility
Provide certification from each manufacturer of components of the coating system, epoxy primer, epoxy intermediate,
and polyurethane topcoat, that the supplied coating material is suitable for use in the specified coating system.
Each manufacturer shall identify the specific products, including manufacturer's name, which their product may
be used with. The certification shall provide the name of the manufacturer that will provide technical support
for the entire system. When all coating materials are manufactured by one manufacturer, this certification is
not required.
1.4.6.12 Non-metallic Abrasive
Provide manufacturer's certification that the materials are currently approved by the Naval Sea Systems Command
and listed on the Qualified Products Lists (QPL) for the specified materials.
1.4.6.13 Metallic Abrasive
Provide manufacturer's certification of conformance to contract requirements and provide copies of test results.
1.4.7 Protective Coating Specialist (PCS)
The PCS shall be considered a QC Specialist and shall report to the QC Manager, as specified in Section
01 45 02 NAVFAC QUALITY CONTROL. The PCS shall approve all submittals prior to submission to the QC Manager
for approval or submission to the government for approval.
1.4.8 Pre-Application Meeting
After approval of submittals but prior to the initiation of coating work, Contractor representatives, including
at a minimum, project superintendent and QC manager, paint foreman, coating inspector, and PCS shall have a pre-application
coating preparatory meeting. This meeting shall be in addition to the pre-construction conference. Specific
items addressed shall include: corrective action requirements and procedures, coating work plan, safety plan,
coordination with other Sections, inspection standards, inspection requirements and tools, test procedures, environmental
control system, safety plan, and test logs. Notify Contracting Officer at least ten days prior to meeting.
1.5 PRODUCT DATA
1.5.1 Joint Sealant Instructions
Submit manufacturer's printed instructions including detailed application procedures, minimum and maximum application
temperatures, and curing procedures. Include materials safety data sheets (MSDS) for materials to be used at
the job site in accordance with 29 CFR 1926.59.
1.5.2 Coating System Instructions
Submit manufacturer's printed instructions including detailed mixing and application procedures, number and types
of coats required, minimum and maximum application temperatures, and curing procedures. Include materials safety
data sheets (MSDS) for materials to be used at the job site in accordance with 29 CFR 1926.59.
1.6 DELIVERY AND STORAGE
Ship, store, and handle materials in accordance with SSPC PA 1, and as modified in this Section. Maintain temperature
in storage spaces between 5 and 29 degrees C 40 and 85 degrees F, and air temperature more than 3 degrees C 5
degrees F above the dew-point at all times. Inspect materials for damage prior to use and return non-compliant
materials to manufacturer. Remove materials with expired shelf life from government property immediately and
notify the Contracting Officer.
If materials are approaching shelf life expiration and an extension is desired, samples may be sent to the manufacturer,
along with complete records of storage conditions, with a request for shelf life extension. If the manufacturer
finds the samples and storage data suitable for shelf life extension, the manufacturer may issue an extension,
referencing the product evaluation and the review of storage records. Products may not be extended longer than
allowed in the product specification.
1.7 COATING HAZARDS
NOTE: This specification Section should be used with UFGS 01 35 29 "SAFETY
REQUIREMENTS".
Ensure that employees are trained in all aspects of the safety plan. Specified coatings may have potential health
hazards if ingested or improperly handled. The coating manufacturer's written safety precautions shall be followed
throughout mixing, application, and curing of the coatings. During all cleaning, cleanup, surface preparation,
and paint application phases, ensure that employees are protected from toxic and hazardous chemical agents which
exceed concentrations in 29 CFR 1910.1000. Comply with respiratory protection requirements in 29 CFR 1910.134
. The CIH shall approve work procedures and personal protective equipment.
1.8 JOB SITE REFERENCES
NOTE: Include any other jobsite related references that might be added during
design.
Make available to the Contracting Officer at least one copy each of ASTM D 3276, ASTM D 3925, ASTM D 4285, ASTM D 7127
, SSPC SP COM, SSPC SP 1, SSPC SP 7, SSPC SP 10, SSPC PA 1, SSPC PA 2, SSPC Guide 6, SSPC VIS 1, SSPC QP 1, SSPC QS 1
, and an SSPC Certified Contractor Evaluation Form at the job site.
PART 2 PRODUCTS
2.1 JOINT SEALANT
TT-S-00230, Type II, Class B
2.2 COATING SYSTEM
NOTE: Include bracketed text for new construction only.
Alternate systems or products will not be considered. All primer, intermediate coat and topcoat materials shall
be supplied by one supplier. [The entire coating system is intended to be applied in the field. Alternatively,
surface preparation may be accomplished in the shop, following all temperature, humidity, and testing requirements
listed herein, followed by an application of a hold-primer. Remove all shop-applied primer prior to final field
surface preparation and coating system application. Adjust all shop preparation to avoid conflicts with final
surface preparation requirements.]
The Military specification epoxy and polyurethane products specified in this Section do not require approval
for listing on the QPL prior to contract award, as indicated in paragraph 3.2 of MIL-DTL-24441 and paragraph
3.1 of MIL-PRF-85285. Testing of products by an independent laboratory to the QUALIFICATION INSPECTION requirements
of MIL-DTL-24441 and MIL-PRF-85285prior to contract award is required. See specific submittal requirements in
paragraph QUALITY ASSURANCE.
2.2.1 Zinc-Rich Epoxy Primer Coat
Epoxy polyamide, MIL-DTL-24441/19 (Formula 159, Type III).
2.2.2 Epoxy Intermediate Coat
Epoxy polyamide, MIL-DTL-24441/31 (Formula 152, Type IV, White (Tinted)). Tint to approximately FED-STD-595
color number 27778 parchment using pigment dispersions prepared for epoxy paint tinting. Manufacturer shall
tint material and appropriately label. All other requirements of this Military Specification apply.
2.2.3 Polyurethane Topcoat
NOTE: Check with the activity to determine the desired topcoat color and finish.
Generally, use white for Navy projects and beige for Air Force projects. Color
number 17925 is white, and 27769 is beige. FAA Safety colors are White 17875
and Orange 12197. Always specify contrasting colors between coats.
Polyurethane coating topcoat of MIL-PRF-85285, Type II, [White FED-STD-595 color number 17925][Beige FED-STD-595
color number 27769 in gloss][White FED-STD-595 color number 17875, and Orange FED-STD-595 color number 12197].
Modify paragraph 3.6.4 of MIL-PRF-85285, Viscosity and Pot Life, as follows:
The viscosity of the admixed coating, when tested in accordance with ASTM D 1200 through a No. 4 Ford
cup, shall be as follows:
Time from mix (minimum) Maximum time through a No. 4 Ford cup
Initially 30 seconds
2 hours 60 seconds
4 hours No gel
Modify paragraph 3.7.1 of MIL-PRF-85285, Drying Time, as follows:
When applied by spray techniques and when tested in accordance with ASTM D 1640, the coating shall be
set-to-touch within four hours and dry-hard within eight hours (see 4.6 and table I).
[2.3 COLOR IDENTIFICATION OF FUEL HANDLING AND STORAGE FACILITIES
Piping, conduit, and tank identification shall be in accordance with MIL-STD-161. Mark direction of fluids in
accordance with MIL-STD-161. The NATO symbol for JP-8 is F-34.
]2.4 COATING SAMPLE COLLECTION AND SHIPPING KIT
Provide a kit that contains one liter quart can for the base of each coating material, an appropriately sized
can for each activator, dipping cups for each component to be sampled, a shipping box sized for the samples to
to be shipped, and packing material. Mark cans for the appropriate component. Provide shipping documents, including
either pre-paid shipping or a shipper number that can be used by the QC Manager to arrange pickup, addressed
to the approved coating testing laboratory.
2.5 ABRASIVE SAMPLE COLLECTION AND SHIPPING KIT
Provide a kit that contains one suitable plastic bag or container for each sample to be collected. Mark containers
for the appropriate component. Provide shipping documents, including either pre-paid shipping or a shipper number
that can be used by the QC Manager to arrange pickup, addressed to the approved coating testing laboratory.
2.6 TEST KITS
2.6.1 Test Kit for Measuring Chloride, Sulfate and Nitrate Ions on Steel and Coated Surfaces
Provide test kits called CHLOR*TEST CSN Salts, as manufactured by CHLOR*RID International Inc. of Chandler, Arizona
(www.chlor-rid.com) or equal. An "equal" test kit shall meet the following requirements:
a. Kit contains all materials,supplies, tools and instructions for field testing and on-site quantitative
evaluation of chloride, sulfate and nitrate ions;
b. Kit extract solution is acidic, factory pre-measured, pre-packaged, and of uniform concentration;
c. Kit components and solutions are mercury free and environmentally friendly;
d. Kit contains new materials and solutions for each test extraction;
e. Extraction test container (vessel, sleeve, cell. etc.) creates a sealed, encapsulated environment
during salt ion extraction;
f. Test extract container is suitable for testing the following steel surfaces: horizontal (up/down configuration),
vertical, flat, curved, smooth, pitted, and rough;
g. All salt ion concentrations are directly measured in micrograms per square centimeter.
2.6.2 Test Kit for Identifying Amine Blush on Epoxy Surfaces
After coating and/or primer has hardened and prior to applying the next coat, test for unreacted amines using
the AMINE BLUSH CHECK, manufactured by Elcometer, Rochester Hills, Michigan, or equal. To be considered for approval
as an "equal" test kit it shall meet the following requirements:
a. Be a completely self-contained field test kit with all materials, supplies, tools and instructions
to perform tests and indicate the presence of unreacted amines;
b. Use an identifiable, consistent, uniform, pre-packaged, factory pre-measured indicating solution;
c. Kit contains no mercury or lead and is environmentally friendly;
d. Kit contains a solution of an unreacted amine for the purpose of "self checking" the indicator solution;
2.7 ABRASIVE
The referenced abrasive specifications have maximum limits for soluble salts contamination, however, this maximum
level of contamination does not guarantee that contamination will not be transferred to the steel surface during
abrasive blasting. Other factors such as on-site handling and recycling can allow contamination of abrasive.
Contractors are cautioned to verify that the chosen abrasive, along with work and storage processes, allow the
final surface cleanliness requirements to be achieved. Successful testing of chlorides in abrasive does not
negate the final acceptance testing of steel surfaces.
NOTE: The following paragraph is mandatory for all
PACNAVFACENGCOM projects. All other agencies may
use it after checking applicability.
[Interpret MIL-A-22262 to include the meaning that abrasive material
contains a maximum one percent by weight of any toxic substance listed in
either Table Z-1, Z-2, or Z-3 or 29 CFR 1910-SUBPART Z, with the
exception of inert or nuisance dust materials, arsenic, beryllium, cadmium,
cobalt, lead, mercury, rhodium, silver, tellurium, thallium, and uranium.
]
NOTE: Reduce allowable gross gamma radioactivity to 5 picocuries per gram for
all PACDIV projects. Reduce in other areas if states or localities require.
2.7.1 Non-metallic Abrasive
Conform to MIL-A-22262, Type I (Inorganic materials)[ except that the gross gamma radioactivity shall not exceed
5 picocuries per gram]. Abrasive shall be approved by the Naval Sea Systems Command and listed on the appropriate
Qualified Products List (QPL) for the specified materials. Use sampling procedures and testing frequencies as
prescribed in MIL-A-22262. Use abrasive that is specifically selected and graded to provide a sharp, angular
profile to the specified depth. Do not use ungraded abrasive. Make adjustments to processes or abrasive gradation
to achieve specified surface profile. Recycled non-metallic abrasive shall meet all requirements of the specification
each time that it is placed in the blast pot.
2.7.2 Metallic Abrasive
2.7.2.1 New and Remanufactured Steel Grit
Conform to the chemical and physical properties of SSPC AB 3 Class 1 (Steel) only[, except that the gross gamma
radioactivity shall not exceed 5 picocuries per gram]. Class 2 (Iron) abrasive shall not be used.
To develop a suitable work mix from new steel abrasive, a minimum of 200 - 400 recycles is required, therefore,
it is advantageous for a Contractor to use remanufactured steel grit or grit reclaimed from a previous project.
Such grit shall be considered to conform if it can be traced to new grit conforming to SSPC AB 3 Class 1 and
it meets all cleanliness requirements of SSPC AB 3 Class 1 when brought to the current jobsite. Submit one representative
sample of this work mix to the laboratory for testing, along with samples of new material. Acceptance and use
of this work mix shall not be used to justify any deviation from surface preparation requirements.
2.7.2.2 Recycled Steel Grit
Conform to the chemical and physical properties of SSPC AB 2
2.8 White Aluminum Oxide Non-skid Grit
Size #60, dust free (washed and dry), minimum 99 percent pure, having the
following sieve analysis when tested in accordance with ASTM E 11 using a 1000 gram 2.2 pound sample:
Sieve # % Retained
40 0
50 15-40
60 60-85
PART 3 EXECUTION
Perform all work, rework, and repair in accordance with approved procedures in the Coating Work Plan.
[3.1 REMOVAL OF COATINGS CONTAINING HAZARDOUS MATERIALS
NOTE: Include UFGS 02 82 33.13 20 in any project specification that requires
removal or disturbance of coating containing hazardous materials. Include a
contractor qualification requirement similar to the article entitled "Qualifications
of Coating Contractors" in Part 1 of this Section, except that the contractor
shall be qualified to SSPC QP-2, Category A. The removal of coatings containing
hazardous materials and application of new coating system can be accomplished
in a continuous operation if the contractor provides appropriate coordination
of removal, cleaning, and coating application. It is specified as two separate
operations to allow separate contractors to accomplish different phases of project.
With the use of SSPC QP-1 and QP-2 requirements in contracts, the same contractor
will generally be accomplishing both phases of work, and will probably want
to perform both phases as a single operation so as not to have to prepare surface
twice. To accomplish the coating removal and recoating in a continuous operation,
the contractors plan must be scrutinized for appropriate controls on the removal
process, and on the surface preparation/coating application process. Delete
this paragraph if no paint containing hazardous material is to be removed.
Coatings containing hazardous materials and identified for disturbance during surface preparation, including
removal, shall be handled in accordance with Section 02 82 33.13 20 REMOVAL AND DISPOSAL OF LEAD CONTAINING PAINT.
Coordinate surface preparation requirements from Section 02 82 33.13 20 REMOVAL AND DISPOSAL OF LEAD CONTAINING
PAINT with this Section.
]3.2 COATING AND ABRASIVE SAMPLE COLLECTION AND TESTING
Sample and test materials delivered to the jobsite. Notify Contracting Officer three days in advance of sampling.
The QC Manager and either the PCS or coating inspector shall witness all sampling.
3.2.1 Coating Sample Collection
Provide a sample collection kit as required in paragraph COATING SAMPLE COLLECTION AND SHIPPING KIT. From each
lot, obtain a one liter quart sample of each base material, and proportional samples of each activator based
on mix ratio, by random selection from sealed containers in accordance with ASTM D 3925. Prior to sampling,
mix contents of each sealed container to ensure uniformity. As an alternative to collecting small samples from
kits, entire kits may be randomly selected and shipped to laboratory, observing all requirements for witnessing
and traceability. For purposes of quality conformance inspection, a lot is defined as that quantity of materials
from a single, uniform batch produced and offered for delivery at one time. A batch is defined as that quantity
of material processed by the manufacturer at one time and identified by number on the label. Identify samples
by designated name, specification number, batch number, project contract number, sample date, intended use, and
quantity involved. The QC manager will take possession of the packaged samples, contact the shipping company
to arrange for pickup, and relinquish the samples only to the shipping representative for shipment to the approved
laboratory for testing as required by the paragraph COATING SAMPLE TEST REPORTS.
3.2.2 Abrasive Sample Collection
Provide a sample collection kit as required in paragraph ABRASIVE SAMPLE COLLECTION AND SHIPPING KIT. For purposes
of quality conformance inspection, a lot shall consist of all abrasive materials of the same type from a single,
uniform batch produced and offered for delivery at one time. Obtain samples of each abrasive lot using the sampling
techniques and schedule of MIL-A-22262. The addition of any substance to a batch shall constitute a new lot.
Identify samples by designated name, specification number, lot number, project contract number, sample date,
intended use, and quantity involved. The QC manager will take possession of the packaged samples, contact the
shipping company to arrange for pickup, and relinquish the samples only to the shipping representative for shipment
to the approved laboratory for testing as required by the paragraph ABRASIVE SAMPLE TEST REPORTS.
3.2.3 Coating Sample Test Reports
Submit test results for each lot of coating material delivered to the jobsite. Test samples of primer, intermediate,
and topcoat materials for compliance with requirements of Table I. Reject entire lot represented by samples
that fail one or more tests, select new lots, and test samples.
3.2.4 Abrasive Sample Test Reports
Submit test results for each lot of abrasive delivered to the jobsite. Test samples of metallic abrasive to
the requirements of paragraph REQUIREMENTS of SSPC AB 3, except paragraph 4.1.5 DURABILITY. Test samples of
non-metallic abrasive as required in paragraph QUALITY CONFORMANCE INSPECTION of MIL-A-22262. Reject entire
lot represented by samples that fail one or more tests, select new lots, and test samples.
3.3 SURFACES TO BE COATED
Coat exterior surfaces of [tank ][structure ][__________][including steel roof, shell, legs, stair, railing,
and other exterior appurtenances].
3.4 LIGHTING
Provide lighting for all work areas as prescribed in SSPC Guide 12.
3.5 ENVIRONMENTAL CONDITIONS
3.5.1 Containment
NOTE: Containment was a design option in previous versions where site congestion
dictated control of dust and paint overspray. Experience has shown, however,
that containment also provides cost-effective control of environmental conditions,
and the better conditions result in a better coating product.
SSPC Guide 6, has four classes of containment, from Class 1 being the highest
level of control. Generally Classes 1 and 2 are only required for removal of
hazardous materials, while Class 3 is probably satisfactory for most coating
operations. Class 4 requires minimal "knockdown" of airborne debris, and is
not generally usable as an airborne particulate control measure.
Design and provide a containment system for the capture, containment, collection, storage and disposal of the
waste materials generated by the work under this Section, to meet the requirements of SSPC Guide 6, Class [1][2][3].
Vapor concentrations shall be kept at or below 10 percent of Lower Explosive Limit (LEL) at all times. Containment
may be designed as fixed containment for complete structure or portable containment for sections of structure,
however, containment shall remain in any one place from beginning of abrasive blasting through initial cure of
coating. Waste materials covered by this paragraph shall not include any material or residue from removal of
coatings containing lead, chromium, cadmium, PCB, or any other hazardous material.
It is the Contractors responsibility to insure the feasibility and workability of the containment system. The
Contractor shall perform his operations and work schedule in a manner as to minimize leakage of the containment
system. The containment system shall be properly maintained and shall not deviate from the approved drawings.
If the containment system fails to function satisfactorily, the Contractor shall suspend all operations, except
those required to minimize adverse impact on the environment or government property. Operations shall not resume
until modifications have been made to correct the cause of the failure.
3.5.2 Automated Monitoring Requirements
Provide continuous monitoring of temperature, relative humidity, and dew point data at pertinent points on the
structure, during surface preparation, coating application, and initial cure. Locate sensors to provide pertinent
data for the surface preparation and coat application being performed. Monitor any heating, cooling, or dehumidification
equipment used. Make data available to the Contracting Officer through Internet access. Provide monitoring
equipment to perform as follows:
a. Data is collected in the field unit in one minute increments, and available for download (on-site)
in a standard format. Contractor shall collect this data and make available to the Contracting Officer;
b. Monitoring equipment shall have backup power such that data collection and transmission to web server
will be uninterrupted during the entire period of the dehumidification requirement;
c. Monitoring equipment shall have capability to measure surface temperatures at a minimum of four locations
anywhere on a 150 foot diameter by 50 foot high tank;
d. Monitoring equipment shall have capability to measure interior and exterior dry bulb temperature (DB),
relative humidity (RH), and dewpoint temperature (DP);
e. Data shall be available continuously through secure Internet connection, using widely available web
browsers;
f. Internet accessible data shall be collected and stored in maximum 15 minute increments, and lag time
between data collection and online availability shall be no greater than 70 minutes;
g. Internet accessible data shall be available for viewing online in tabular format, and graphical format
using selected data;
h. Internet accessible data shall be available for download in user-defined segments, or entire project
to date, in a standard format usable by Microsoft Excel and other spreadsheet programs.
i. Internet-based controls shall provide alerts to pre-designated parties through email messaging;
j. Internet-based controls shall monitor data uploads from field unit and issue alert if data not initiated
within 60 minutes of last upload;
k. Internet-based controls shall monitor operation of DH equipment and issues alert when power remains
off for more than 15 seconds, or if pre-determined temperature, RH, or DP conditions are exceeded;
The requirements listed here were developed around the Munters Exactaire Monitoring System, as this was the only
monitoring system having Internet connectivity known to be commercially available. There is no requirement for
connectivity of the monitoring system to control the DH equipment, therefore, any combination of equipment having
the required functionality will be accepted.
3.6 SURFACE PREPARATION
NOTE: When editing this specification for maintenance coating work for which
SSPC SP 12 Water Cleaning or Jetting surface preparation is to be allowed, include
note for the contractor to use potable water, monitor the quality of the water,
and adjust water quality to assure appropriate surface preparation and final
surface requirements. There are many problems that might arise from both dissolved
and suspended material. A common occurrence is water with high-chlorides, even
in potable water, which may leave unacceptable contamination on cleaned surfaces,
and may not be suitable for water jetting.
3.6.1 Abrasive Blasting Equipment
Use abrasive blasting equipment of conventional air, force-feed, or pressure type. Maintain a minimum pressure
of 650 kPa 95 psig at nozzle. Confirm that air supply for abrasive blasting is free of oil and moisture when
tested in accordance with ASTM D 4285. Test air quality at each startup, but in no case less often than every
five operating hours.
3.6.2 Operational Evaluation of Abrasive
Test abrasive for salt contamination and oil contamination as required by the appropriate abrasive specification
daily at startup and every five operating hours thereafter.
3.6.3 Surface Standard
Inspect surfaces to be coated, and select plate with similar properties and surface characteristics for use as
a surface standard. Blast clean one or more 300 mm 1 foot square steel panels as specified in paragraph SURFACE
PREPARATION. Record blast nozzle type and size, air pressure at nozzle and compressor, distance of nozzle from
panel, and angle of blast to establish procedures for blast cleaning. Measure surface profile in accordance
with ASTM D 7127. When the surface standard complies with all specified requirements, seal with a clearcoat
protectant. Use the surface standard for comparison to abrasive blasted surfaces throughout the course of work.
3.6.4 Pre-Preparation Testing for Surface Contamination
Perform testing, abrasive blasting, and testing in the prescribed order.
3.6.4.1 Pre-Preparation Testing for Oil and Grease Contamination
NOTE: When specifying maintenance painting, use a water based pH neutral degreaser
to avoid damaging existing coating.
Inspect all surfaces for oil and/or grease contamination using two or more of the following inspection techniques:
1) Visual inspection, 2) WATER BREAK TEST, 3) CLOTH RUB TEST. Reject oil and/or grease contaminated surfaces,
clean [using a water based pH neutral degreaser ]in accordance with SSPC SP 1, and recheck for contamination
until surfaces are free of oil and grease.
WATER BREAK TEST - Spray atomized mist of distilled water onto surface, and observe for water beading. If water
"wets" surface rather than beading up, surface can be considered free of oil or grease contamination. Beading
of water (water forms droplets) is evidence of oil or grease contamination.
CLOTH RUB TEST - Rub a clean, white, lint free, cotton cloth onto surface and observe for discoloration. To
confirm oil or grease contamination in lightly stained areas, a non-staining solvent may be used to aid in oil
or grease extraction. Any visible discoloration is evidence of oil or grease contamination.
3.6.4.2 Pre-Preparation Testing for Soluble Salts Contamination
Test surfaces for soluble salts, and wash as required, prior to abrasive blasting. Soluble salt testing is also
required in paragraph PRE-APPLICATION TESTING FOR SOLUBLE SALTS CONTAMINATION as a final acceptance test of prepared
surfaces after abrasive blasting, and successful completion of this phase does not negate that requirement.
This phase is recommended since pre-preparation testing and washing are generally more advantageous than attempting
to remove soluble salt contamination after abrasive blasting. Effective removal of soluble salts will require
removal of any barrier to the steel surface, including rust. This procedure may necessitate combinations of
wet abrasive blasting, high pressure water rinsing, and cleaning using a solution of water washing and soluble
salts remover. The soluble salts remover shall be acidic, biodegradable, nontoxic, noncorrosive, and after application,
will not interfere with primer adhesion. Delays between testing and preparation, or testing and coating application,
may allow for the formation of new contamination. Use potable water, or potable water modified with soluble
salt remover, for all washing or wet abrasive blasting. Test methods and equipment used in this phase are selected
at the Contractor's discretion.
3.6.5 Abrasive Blasting
NOTE: The issue of maximum profile on new structures is an important one.
Once a profile is established, it is nearly impossible to reduce it, therefore,
the initial profile will dictate the profile for the life of the structure.
The specified 2-3 mil surface profile is the preferred depth for preparing for
zinc primer. On steel that was previously prepared to a deeper depth and coated,
it is not feasible to reduce the deeper depth to the preferred depth. A depth
of 4 mils can be tolerated with an additional mil of zinc primer thickness.
Designers must be aware that profile found to be in excess of 3 mils may require
additional funding to add extra coating material.
To validate contractor claims of pre-existing profile greater than allowed,
test an appropriate number of representative spots with abrasive that removes
paint but does not affect profile, such as bicarbonate of soda, or other soft
abrasive, or waterblasting, etc.
Abrasive blast steel surfaces to near-white metal in accordance with SSPC SP 10. Prepared surfaces shall conform
to SSPC VIS 1 and shall match the prepared test-panels. Provide a 50 to 75 micron 2 to 3 mil surface profile.
Reject profile greater than 75 microns 3 mils, discontinue abrasive blasting, and modify processes and materials
to provide the specified profile. Measure surface profile in accordance with ASTM D 7127, using Rmax as the
measure of profile height. Record all measurements required in this standard. Measure profile at rate of three
test areas for the first 100 square meters 1000 square feet plus one test area for each additional 100 square
meters 1000 square feet or part thereof. When surfaces are reblasted for any reason, retest profile as specified.
Following abrasive blasting, remove dust and debris by vacuum cleaning. Do not attempt to wipe surface clean.
3.6.6 Disposal of Used Abrasive
Dispose of used abrasive off Government property in accordance with Federal, State, and Local mandated regulations.
3.6.7 Pre-Application Testing For Surface Contamination
3.6.7.1 Pre-Application Testing for Oil and Grease Contamination
Ensure surfaces are free of contamination as described in paragraph PRE-PREPARATION TESTING FOR OIL AND GREASE
CONTAMINATION, except that only questionable areas need be checked for beading of water misted onto surface.
3.6.7.2 Pre-Application Testing for Soluble Salts Contamination
NOTE: On new structures, require 30% of tests to be accomplished at welds.
On structures that have been in service, corroded areas should also be tested
for high chlorides.
Test surfaces for chloride contamination using the Test Kit described in TEST KIT FOR MEASURING CHLORIDE, SULFATE
AND NITRATE IONS ON STEEL AND COATED SURFACES. Test all surfaces at rate of three tests for the first 100 square
meters 1000 square feet plus one test for each additional 200 square meters 2000 square feet or part thereof.
[Concentrate testing of bare steel at areas of coating failure to bare steel and areas of corrosion pitting.
][Perform 30% of tests on bare steel at welds, divided equally between horizontal and vertical welds. ]One or
more readings greater than 3 micrograms per square centimeter of chlorides or 10 micrograms per square centimeter
of sulfates or 5 micrograms per square centimeter of nitrates is evidence of soluble salt contamination. Reject
contaminated surfaces, wash as discussed in paragraph PRE-PREPARATION TESTING FOR SOLUBLE SALTS CONTAMINATION,
allow to dry, and re-test until all required tests show allowable results. Reblast tested and cleaned areas
as required. Label all test tubes and retain for test verification.
3.6.7.3 Pre-Application Testing for Surface Cleanliness
Apply coatings to dust free surfaces. To test surfaces, apply strip of clear adhesive tape to surface and rub
onto surface with finger. When removed, the tape should show little or no dust, blast abrasive, or other contaminant.
Reject contaminated surfaces and retest. Test surfaces at rate of three tests for the first 100 square meters
1000 square feet plus one test for each additional 100 square meters 1000 square feet or part thereof. Provide
two additional tests for each failed test or questionable test. Attach test tapes to Daily Inspection Reports.
3.7 MIXING AND APPLICATION OF SEALANT AND COATING SYSTEM
3.7.1 Preparation of Sealant and Coating Materials for Application
Each of the sealant, primer, intermediate, and topcoat materials is a two-component material supplied in separate
containers.
3.7.1.1 Mixing Sealant, Primer and Intermediate Coat Materials
Mix in accordance with manufacturer's instructions, which may differ for each product. Do not mix partial kits,
or alter mix ratios. Mix materials in same temperature and humidity conditions specified in paragraph DELIVERY
AND STORAGE. Allow mixed material to stand for the required induction time based on its temperature.
3.7.1.2 Mixing Topcoat Material
Do not mix partial kits, or alter mix ratios. Mix polyurethane coating materials in same temperature conditions
specified in paragraph DELIVERY AND STORAGE. The polyurethane coating material is moisture sensitive and any
introduction of moisture or water into the material during mixing or application will shorten usable pot life.
Use a mixer that does not create a vortex. Do not add solvent without specific written recommendation from the
manufacturer. No induction time is required, only thorough agitation of the mixed material.
3.7.1.3 Pot Life
Apply mixed products within stated pot life for each product. Stop applying when material becomes difficult
to apply in a smooth, uniform wet film. Add all required solvent at time of mixing. Do not add solvent to extend
pot life. Pot life is based on standard conditions at 21 degrees C 70 degrees F and 50 percent relative humidity.
For every 10 degrees C 18 degrees F rise in temperature, pot life is reduced by approximately half, and for every
10 degrees C 18 degrees F drop it is approximately doubled. Usable pot life depends on the temperature of the
material at the time of mixing and the sustained temperature at the time of application. Other factors such
as the shape of the container and volume of mixed material may also affect pot life. Precooling or exterior
icing of components for at least 24 hours to a minimum of 10 degrees C 50 degrees F in hot climates will extend
pot life. High humidity at time of mixing and application shortens pot life of the Polyurethane topcoat material.
Following are approximate pot life times:
Sealant As specified by manufacturerEpoxy primer and intermediate materials
4 hours
Polyurethane topcoat materials 2 hours.
3.7.1.4 Application Conditions and Recoat Windows
NOTE: These new requirements are provided in an attempt to prevent the significant
number of intercoat delamination failures that are frequently found on industrial
structures. The very strict requirements on application conditions and recoat
windows may require work during abnormal hours, including weekends. Contractor
work hours should allow for such during coating application.
NOTE: Cold-weather application is not covered by this specification. If a project
is designed for coating in cold weather, then the enclosure and heating requirements
may be significant. It is not intended that contractors be forced to apply
coatings in cold weather, however, the underlying premise is that coatings must
be applied within the specified temperature ranges. A cold-weather specification
should not be used to simply save money, as the coating system will generally
not have the same longevity as one applied within 60-100 degrees F.
The application condition requirements for the coating system are very time and temperature sensitive, and are
intended to avoid the delamination problems frequently found on industrial structures. Plan coating application
to ensure that specified temperature, humidity, and condensation conditions are met. If conditions do not allow
for orderly application of sealant, primer, stripe coat, intermediate coat and topcoat, use appropriate means
of controlling air and surface temperatures, as required. Partial or total enclosures, insulation, heating or
cooling, or other appropriate measures may be required to control conditions to allow for orderly application
of all required coats.
Maintain air and steel surface temperature between 16 and 38 degrees C 60 and 100 degrees F during application
and the first four hours of cure for epoxy coats and the first eight hours of cure for polyurethane coats. Maintain
steel surface temperature more than 3 degrees C 5 degrees F above the dew-point of the ambient air for the same
period.
Use Table entitled "RECOAT WINDOWS" to determine appropriate recoat windows for each coat after the initial coat.
Apply each coat during appropriate RECOAT WINDOW of preceding coat. If a RECOAT WINDOW is missed, the minimum
and maximum primer and intermediate coat thickness may be adjusted to accommodate a FILL COAT, however, requirements
for total epoxy coating thickness and total coating thickness will not be modified. Missing more than one RECOAT
WINDOW may require complete removal of coating if maximum total coating thickness requirements cannot be achieved.
If coating is not applied during RECOAT WINDOW, or if surface temperature exceeds 49 degrees C 120 degrees F
between applications, provide GLOSS REMOVAL, apply next coat within 24 hours. If next planned coat is topcoat,
apply FILL COAT if required to fill sanding marks. Sanding marks from GLOSS REMOVAL of intermediate coat reflecting
through topcoat will be considered as noncompliant. Apply FILL COAT within 24 hours of GLOSS REMOVAL, then apply
topcoat within RECOAT WINDOW of FILL COAT.
RECOAT WINDOWS
EPOXY OVER EPOXY
Temperature degrees F 60-70 71-80 81-90 91-100 101-110 111-120
Temperature degrees C 16-21 22-27 28-32 33-38 39-43 44-49
RECOAT WINDOW 24-72 18-60 16-48 12-36 8-18 4-6
(Hrs.)
POLYURETHANE OVER EPOXY
Temperature degrees F 60-70 71-80 81-90 91-100 101-110 111-120
Temperature degrees C 16-21 22-27 28-32 33-38 39-43 44-49
RECOAT WINDOW 24-96 24-72 16-48 12-36 10-24 8-16
(Hrs.)
POLYURETHANE OVER POLYURETHANE
Temperature degrees F 60-70 71-80 81-90 91-100 101-110 111-120
Temperature degrees C 16-21 22-27 28-32 33-38 39-43 44-49
RECOAT WINDOW 8-48 6-48 4-36 3-24 2-12 1-2
(Hrs.)
The temperature ranges shown in the table above are for determining recoat windows. Choose recoat window based
on the highest surface temperature that was sustained for one or more hours between coats. This applies to the
entire time between coats. Measure and record air and surface temperatures on hourly basis to determine appropriate
recoat windows. If surface temperature goes above 38 degrees C 100 degrees F, measure and record temperatures
every half hour.
FILL COAT - Where indicated, apply coat of intermediate coat epoxy, at 50 to 75 microns 2 to 3 mils DFT, then
apply next specified full coat within recoat window of FILL COAT. A FILL COAT may be used to adjust coating
thickness to comply with requirements or to fill sanding marks in intermediate coat.
GLOSS REMOVAL - Where required, hand sand in a linear fashion to remove gloss using 120-200 grit wet/dry sandpaper,
followed by solvent wiping with a clean rag soaked with denatured alcohol to remove all dust. GLOSS REMOVAL
of primer coat is to scarify surface and shall consist of removal of approximately 25 microns 1 mil of coating.
If steel is exposed during GLOSS REMOVAL, repair in accordance with paragraph PROCEDURE FOR HOLIDAY AND SPOT
REPAIRS OF NEWLY APPLIED COATING. GLOSS REMOVAL of intermediate coat may include removal of up to 75 microns
3 mils of coating to avoid excess thickness, prior to application of FILL COAT.
3.7.2 Amine Blush Testing of Epoxy Coat Prior to Overcoating
Test epoxy surfaces prior to application of roof joint sealant, epoxy coat, or polyurethane topcoat for amine
blush contamination using the Test Kit described in paragraph TEST KIT FOR IDENTIFYING AMINE BLUSH ON EPOXY SURFACES.
Test all surfaces at rate of three tests for the first 100 square meters 1000 square feet plus one test for each
additional 200 square meters 2000 square feet or part thereof. Remove any identified contamination using an
approved procedure.
3.7.3 Application of Coating System and Joint Sealant
Apply coatings in accordance with SSPC PA 1 and as specified herein. Apply coatings to surfaces that meet all
stated surface preparation requirements.
After application of primer coat and prior to application of each subsequent coat, perform testing prescribed
in paragraph PRE-APPLICATION TESTING FOR SURFACE CONTAMINATION, as necessary, to ensure minimal intercoat contamination.
This testing may be reduced to one half of the prescribed rate for bare steel if the testing indicates no contamination
when sampling is evenly distributed over surfaces being tested. If contamination is found between coats, revert
to the specified testing rate. Generally, oil and grease contamination and soluble salts contamination are not
encountered if subsequent coats are applied within specified recoat windows and unusual atmospheric events do
not occur. Such atmospheric events as a coastal storm blowing onshore can bring unusual chloride contamination.
Concern for intercoat contamination should be continually prevalent, and spot testing should be accomplished
to verify satisfactory conditions. Where visual examination or spot testing indicates contamination, perform
sufficient testing to verify non-contamination, or to define extent of contamination for appropriate treatment.
Apply each coat in a consistent wet film, at 90 degrees to previous coat. Ensure that primer and intermediate
coat "cold joints" are no less than 150 mm six inches from welds. Apply stripe coat by brush. For convenience,
stripe coat material may be delivered by spray if followed immediately with brush-out and approved procedures
include appropriate controls on thickness. Apply all other coats by spray application. Use appropriate controls
to prevent airborne coating fog from drifting beyond[ [15][____] feet [three][____] meters from the structure
perimeter] [the tank berm]. Cover or protect all surfaces that will not be coated. The cleanliness, temperature,
recoat windows, and airborne paint containment requirements may necessitate the use of enclosures, portable shelters,
or other appropriate controls.
NOTE: Maximum thickness measurements are to limit internal stresses in each
coat and in total system. Internal stresses of epoxy and polyurethane coatings
on steel can be significant, and unless limited through thickness, can cause
premature failure as the coating ages. Such failures as shrinkage cracking
and delamination, either from the substrate or between coats, are common. This
system is limited to 12 mils to allow for maintenance overcoating without creating
excessive film build.
Apply coatings at the following specified thickness:
Minimum DFT Maximum DFT
Coat (Mils) (Mils)
Primer 3 5
Intermediate 3 5
Top 2 3
---- ----
Total system 8 13
Minimum DFT Maximum DFT
Coat (Microns) (Microns)
Primer 75 125
Intermediate 75 125
Top 50 75
---- ----
Total system 200 325
3.7.3.1 Application of Primer
Apply primer coat, maintaining paint supply container height within 1 meter 3 feet of the paint nozzle for applying
zinc primer. Maintain constant agitation of paint pot to ensure that zinc does not settle in container.
3.7.3.2 Application of Stripe Coat
Apply a stripe coat of intermediate coat epoxy material within RECOAT WINDOW of primer, allowing sufficient dry
time to allow application of intermediate coat within RECOAT WINDOW of primer. Apply by brush, working material
into corners, crevices, angles, and welds, and onto outside corners and angles.
3.7.3.3 Application of Intermediate Coat
Apply intermediate coat within RECOAT WINDOW of primer coat.
3.7.3.4 Non-skid for Stairs and Top
Where non-skid is required, apply a second intermediate coat, and immediately follow with application of non-skid
grit, broadcast at the rate of 2 pounds per 100 square feet, and backroll. Apply topcoat as specified.
3.7.3.5 Application of Topcoat
Make all required repairs to primer and intermediate coats as specified in paragraph entitled "Procedure for
Holiday and Spot Repairs of Newly Applied Coating" prior to applying topcoat. Apply topcoat within RECOAT WINDOW
of intermediate coat. The polyurethane topcoat may require multiple passes to achieve desired aesthetics and
required thickness. Consult manufacturer for thinning and application procedures for anticipated temperature,
humidity, and wind conditions. Touch-up blemishes and defects within recoat window of polyurethane topcoat.
Retain sample of polyurethane topcoat, from the same batch used to coat structure, to make touch-ups that might
be required later.
3.7.3.6 Application of Joint Sealant
Apply joint sealant to back-to-back steel joints that are less that 3/8 inches wide and are not seal welded.
Apply sealant to top and bottom, or each side, of narrow joints. Apply sealant within 48 hours of application
of the topcoat, and touch-up with topcoat after appropriate cure of the sealant.
3.7.3.7 Procedure for Holiday and Spot Repairs of Newly Applied Coating
Repair coating film defects at the earliest practicable time, preferably before application of the succeeding
coat. Observe all requirements for soluble salts contamination, cleanliness between coats, and application conditions.
Prepare defective area in accordance with SSPC SP 10, and feather coating as required to leave 100 mm 4 inches
of each succeeding coat feathered and abraded. Protect adjacent areas from damage and overspray. Remove dust
and solvent wipe the prepared area plus an additional 100 mm 4 inches beyond the prepared area with clean denatured
alcohol. Apply each coat within RECOAT WINDOW of preceeding coat. Within four hours of preparation, apply zinc-rich
primer to prepared steel and feather onto prepared primer. Apply intermediate coat to primed area and feather
to prepared intermediate area. Apply topcoat to intermediate coat and feather to prepared topcoat. Apply each
repair coat to approximate thickness of surrounding coating system.
3.7.3.8 Structure Occupancy After Coating Application
Use clean canvas or other approved shoe covers when walking on coated surfaces, regardless of curing time allowed.
For heavily trafficked areas, provide cushioned mats for additional protection.
3.8 PROJECT IDENTIFICATION
At the completion of the work, stencil the following information on the [structure ][tank exterior adjacent to
the main manway opening ]in 3/4 to one inch Helvetica style letters of contrasting color using acrylic stencil
paint:
Date exterior coated:
Project Number:
Contractor:
Address:
Coating System
Surface Prep: SSPC SP __ Profile: ____
Primer: ____________ Thickness: ____
Intermediate: ____________ Thickness: ____
Topcoat: ____________ Thickness: ____
Total Thickness: ____
3.9 FIELD QUALITY CONTROL
For marking of tank surfaces, use chalk for marking bare steel, and water based markers for marking coated surfaces,
and remove marks prior to coating. Do not use any wax or grease based markers, or any other markers that leave
a residue or stain.
3.9.1 Coating Inspector
The coating inspector shall be considered a QC Specialist and shall report to the QC Manager, as specified in
Section 01 45 02 NAVFAC QUALITY CONTROL. The Coating Inspector shall be present during all pre-preparation testing,
surface preparation, coating application, initial cure of the coating system, during all coating repair work,
and during completion activities as specified in Section 01 45 02 NAVFAC QUALITY CONTROL. The Coating Inspector
shall provide complete documentation of conditions and occurrences on the job site, and be aware of conditions
and occurrences that are potentially detrimental to the coating system. The requirements for inspection listed
in this Section are in addition to the QC inspection and reporting requirements specified in Section
01 45 02 NAVFAC QUALITY CONTROL.
3.9.2 Field Inspection
3.9.2.1 Inspection Requirements
Perform field inspection in accordance with ASTM D 3276 and the approved Coating Work Plan. Document Contractor's
compliance with the approved Coating Work Plan.
Provide all tools and instruments required to perform the required testing, as well as any tools or instruments
that the inspector considers necessary to perform the required inspections and tests. Document each inspection
and test, including required hold points and other required inspections and tests, as well as those inspections
and tests deemed prudent from on-site evaluation to document a particular process or condition, as follows:
a. Location or area;
b. Purpose (required or special);
c. Method;
d. Criteria for evaluation;
e. Results;
f. Determination of compliance;
g. List of required rework;
h. Observations.
Collect and record Environmental Conditions as described in ASTM D 3276 on a 24 hour basis, as follows:
a. During surface preparation, every two hours or when changes occur;
b. During coating application and the first four days of initial cure, every hour, or when changes occur;
c. Note location, time, and temperature of the highest and lowest surface temperatures each day;
d. Use a non-contact thermometer to locate temperature extremes, then verify with contact thermometers.
Document all equipment used in inspections and testing, including manufacturer, model number, serial number,
last calibration date and future calibration date, and results of on-site calibration performed.
Document Contractors compliance with the approved Coating Work Plan.
3.9.2.2 Inspection Report Forms
Develop project-specific report forms as required to report measurements, test results, and observations being
complete and and conforming to contract requirements. This includes all direct requirements of the contract
documents and indirect requirements of referenced documents. Show acceptance criteria with each requirement
and indication of conformity of each inspected item. The data may be in any format, but must be legible and
presented so that entered data can be quickly compared to the appropriate requirement.
3.9.2.3 Daily Inspection Reports
Submit one copy of daily inspection report completed each day when performing work under this Section, to the
Contracting Officer. Note all non-compliance issues, and all issues that were reported for rework in accordance
with QC procedures of Section 01 45 02 NAVFAC QUALITY CONTROL. Each report shall be signed by the coating inspector
and the QC Manager. Submit report within 24 hours of date recorded on the report.
3.9.2.4 Inspection Logbook
A continuous record of all activity related to this Section shall be maintained in an Inspection Logbook on a
daily basis. The logbook shall be hard or spiral bound with consecutively numbered pages, and shall be used
to record all information provided in the Daily Inspection Reports, as well as other pertinent observations and
information. The Coating Inspector's Logbook that is sold by NACE is satisfactory. Submit the original Inspection
Logbook to the Contracting Officer upon completion of the project and prior to final payment.
3.9.2.5 Inspection Equipment
All equipment shall be in good condition, operational within its design range, and calibrated as required by
the specified standard for use of each device.
3.10 FINAL CLEANUP
Following completion of the work, remove debris, equipment, and materials from the site. Remove temporary connections
to Government or Contractor furnished water and electrical services. Restore existing facilities in and around
the work areas to their original condition.
TABLE 1
COATING QUALITY CONFORMANCE INSPECTION REQUIREMENTS
Table Ia - Zinc-rich Epoxy Primer Coat MIL-DTL-24441/19 Formula 159
______________________________________________________________________________
Test Component A Component B Mixed
Min. Max. Min. Max. Min. Max.
______________________________________________________________________________
Pigment content, --- --- 81.5 85.5 --- ---
percent (zinc dust)
Volatiles, percent 42.8 44.3 8.0 8.4 --- ---
Non-volatile vehicle 53.7 57.7 8.3 8.7 --- ---
percent
Weight,
Kilograms/liter 0.87 1.01 3.30 3.40 2.80 2.91
Pounds/gallon 7.3 8.4 27.5 28.4 23.4 24.4
Flashpoint
Degrees C 35.6 --- 37.8 --- --- ---
Degrees F 96 --- 100 --- --- ---
Consistency, grams --- --- 250 500 150 300
Set to touch time, --- --- --- --- --- 2
hours at 23 degrees C,
73 degrees F
Dry-hard time, hours --- --- --- --- --- 8
at 23 degrees C,
73 degrees F
Pot life, hours at --- --- --- --- 4 ---
23 degrees C,
73 degrees F
Sag resistance
Micrometers --- --- --- --- 300 ---
Mils --- --- --- --- 12 ---
VOC
Grams/liter --- --- --- --- --- 304
Pounds/gallon --- --- --- --- --- 2.5
NOTES:
Test methods as specified in MIL-DTL-24441.
TABLE 1
COATING QUALITY CONFORMANCE INSPECTION REQUIREMENTS
Table Ib. - Epoxy Intermediate Coat MIL-DTL-24441/31 Formula 152 Type IV
(White (Tinted))
______________________________________________________________________________
Test Component A Component B Mixed
Min. Max. Min. Max. Min. Max.
______________________________________________________________________________
Pigment content, percent 44.0 49.0 33.0 38.0 --- ---
Volatiles, percent 29.0 35.0 16.0 21.0 --- ---
Non-volatile vehicle, 17.5 23.5 44.0 49.0 --- ---
percent
Coarse particles, percent --- 0.3 --- 0.3 --- ---
Consistency, grams 180 320 300 470 180 245
Weight
Kilograms/liter 1.39 1.45 1.29 1.35 1.34 1.40
Pounds per gallon 11.6 12.1 10.8 11.3 11.2 11.7
Set to touch, hours --- --- --- --- --- 3
at 23 degrees C,
73 degrees F
Dry-hard time, hours --- --- --- --- --- 8
at 23 degrees C,
73 degrees F
Fineness of grind, Hegman 4 --- 4 --- --- ---
Flashpoint
Degrees C 35.5 --- 37.8 --- --- ---
Degrees F 96 --- 100 --- --- ---
Titanium dioxide, 91 --- --- --- --- ---
percent of pigment
Pot life, hours at 23 --- --- --- --- 4 ---
degrees C, 73 degrees F
Sag resistance
Micrometers --- --- --- --- 300 ---
Mils --- --- --- --- 12 ---
Color of dry film to --- --- --- --- Conform
approximate color of
FED-STD 595 color 27778
Contrast ratio, at --- --- --- --- 0.98 ---
75 micrometers, 3 mils DFT
Gloss, 60 degree specular --- --- --- --- 35 ---
VOC
Grams/liter --- --- --- --- --- 340
Pounds/gallon --- --- --- --- --- 2.8
GENERAL NOTES:
Test methods as specified in MIL-DTL-24441.
Where "Conform" is indicated, refer to specific requirements of
MIL-DTL-24441/31.
TABLE 1
COATING QUALITY CONFORMANCE INSPECTION REQUIREMENTS
Table Ic - Polyurethane Topcoat MIL-PRF-85285 Type II
(White and Colors)
______________________________________________________________________________
Test Component A Component B Mixed
Min. Max. Min. Max. Min. Max.
______________________________________________________________________________
Moisture content, --- 2 --- --- --- ---
percent
Coarse particles, --- --- --- --- --- .5
percent
Viscosity --- --- --- --- See Note 1
Fineness of grind, Hegman --- --- --- --- 7 ---
Drying to touch (See Note 2) --- --- --- --- --- 4 Dry hard (See Note 2) --- ---
--- --- --- 8
VOC, grams per liter --- --- --- --- --- 340
Color --- --- --- --- delta E+-1.0
Gloss 60 degree specular gloss
Gloss --- --- --- --- --- 90
Semi-gloss --- --- --- --- 15 45
Opacity --- --- --- --- 0.95 ---
Flexibility --- --- --- --- Conform
Fluid resistance --- --- --- --- Conform
Heat resistance (cure) --- --- --- --- Conform
Solvent resistance (cure) --- --- --- --- Conform
Condition in container --- --- --- --- Conform
Odor --- --- --- --- Conform
Lead percent --- --- --- --- --- 0.06
Cadmium percent --- --- --- --- --- 0.06
Chromium percent --- --- --- --- --- 0.00
NOTES:
(1) Modify paragraph 3.6.4 Viscosity and Pot Life, of MIL-PRF-85285 as follows:
The viscosity of the admixed coating, when tested in accordance
with ASTM D 1200 through a No. 4 Ford cup, shall be as follows:
Time from mix (minimum) Maximum time through a No. 4 Ford cup
Initially 30 seconds
2 hours 60 seconds
4 hours No gel
(2) Modify paragraph 3.7.1 Drying Time, of MIL-PRF-85285
When applied by spray techniques and when tested in accordance with
ASTM D 1640, the coating shall be set-to-touch within four hours and
dry-hard within eight hours (see 4.6 and table I).
GENERAL NOTES:
- Test methods as specified in MIL-PRF-85285.
- Where "Conform" is indicated, refer to specific requirements of
MIL-PRF-85285.