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Previous Issue: Issue: 28 28 June June 2009 2009 Next Next Planned Planned Update: Update: 28 28 June June 20142014
Qualification Requirements for Coa
Qualification Requirements for Coal T
l Tar Epoxy in Bur
ar Epoxy in Buried
ied
or Immersion Services (APCS-3) for Steel & Concrete
or Immersion Services (APCS-3) for Steel & Concrete
Document Responsibility: Paints and Coatings Standards Committee
Document Responsibility: Paints and Coatings Standards Committee
Saudi Aramco DeskTop Standards
Saudi Aramco DeskTop Standards
Table of Contents Table of Contents
1 Scope... 1 Scope... 22 2
2 Conflicts Conflicts and and Deviations....Deviations... 22 3 References... 3 References... 33 4
4 General General Requirements....Requirements... 44 5
5 Qualification Qualification Tests Tests and and Requirements...Requirements... 44 6
1 Scope
This Specification defines the minimum mandatory requirements for qualifying coal tar epoxy coating products for use in Saudi Aramco's Approved Protective Coating System APCS-3 on steel and concrete. It shall be used when any of the following situations occur:
1.1 Initial Product Approval
This specification shall be given to coating manufacturers, or other vendors of coating products, that wish to obtain initial approval for produc ts that have not previously been qualified in accordance with this specification.
1.2 Purchase Requisitions/Purchase Orders
This specification shall be attached to Purchase Requisitions or Purchase Orders when those documents address the procurement of coating products that have not been previously qualified in accordance with this specification.
This specification does not apply to, and should not be included with, Purchase orders or requisitions for coating products that have been previously qualified per this specification. This specification should also not be included with purchase orders or requisitions for coated items or equipment when a Saudi
Aramco approved protective coating system has been specified. 1.3 Periodic Product Compliance Checks
This specification may be used for periodic product compliance checks on previously approved coatings. It shall be given to the organization conducting
the compliance tests. 2 Conflicts and Deviations
2.1 Any conflicts between this specification and other Saudi Aramco Materials System Specifications (SAMSSs), Saudi Aramco Engineering Standards
(SAESs), industry codes and standards, and Saudi Aramco Standard Drawings (SASDs) and Forms shall be resolved in writing by the Company or Buyer Representative through the Manager, Consulting Services Department of Saudi Aramco, Dhahran.
2.2 Direct all requests to deviate from this specification in writing to the Company or Buyer Representative, who shall follow internal company procedure SAEP-302 and forward such requests to the Manager, Consulting Services Department of Saudi Aramco, Dhahran.
3 References
Materials or equipment supplied to this specification shall comply with the latest edition of the references listed below, unless otherwise noted.
3.1 Saudi Aramco Documents
Saudi Aramco Engineering Procedure
SAEP-302 Instructions for Obtaining a Waiver of a Mandatory Saudi Aramco Engineering Requirement
Saudi Aramco Materials System Specification
09-SAMSS-060 Packaging Requirements for Coatings Saudi Aramco Engineering Standard
SAES-H-101 APCS-3 Coal-Tar Epoxy Coating for Immersion Service 3.2 Industry Codes and Standards
American Society for Testing and Materials ASTM A36 Structural Steel
ASTM D610 Evaluating Degree of Rusting on Painted Steel Surfaces
ASTM D714 Evaluating Degree of Blistering of Paints ASTM D1640 Drying, Curing or Film Formation of Organic
Coatings at Room Temperature ASTM D1849 Package Stability of Paint
ASTM D4541 Pull-off Strength of Coatings Using Portable Adhesion Testers
ASTM G42 Cathodic Disbonding of Pipeline Coatings
Subjected to Elevated or Cyclic Temperatures National Association of Corrosion Engineers
NACE TM0174 Laboratory Methods for the Evaluation of Protective Coatings and Lining Materials in Immersion Service
The Society for Protective Coatings
Magnetic Gages
SSPC - Guide to VIS 1 Pictorial Surface Preparation Standards for Painting Steel Surfaces
SSPC SP 10 Near-white Metal Blast Swedish Standards Institute
SIS Sa 2-½ Very Thorough Blast Cleaning International Concrete Repair Institute (ICRI)
Technical Guide 03730 Guide for Surface Preparation for the Repair of Deteriorated Concrete Resulting from
4 General Requirements
4.1 For purposes of this specification the Buyer's Representative shall be the Responsible Standardization Agency Representative (RSA).
4.2 In order to qualify a coating system as acceptable under this specification, the coating supplier must submit a certified test report documenting to the RSA that the proposed coating system meets the qualification tests and requirements of this SAMSS. Preparation and testing shall be performed and/or witnessed by an independent laboratory or inspection agency. This report shall be submitted to the Saudi Aramco RSA for review and approval if the data presented by the Supplier satisfied all the requirements.
4.3 All initial product qualification tests and any other laboratory tests that Saudi Aramco sees necessary to qualify this product shall be carried out at no cost to Saudi Aramco.
4.4 Certified test report of the coal tar epoxy coatings for soil buried concrete or for internal oily water sump up to 70°C shall include tests on water permeability, chemical tests, adhesion value, crack bridging value, surface preparation requirement
5 Qualification Tests and Requirements 5.1 Test Panel Preparation
5.1.1 Test panels shall be ASTM A36 hot rolled steel approximately 100 mm X 150 mm. Prior to preparing the surface, the condition of the test panel shall be equivalent to SSPC - Guide to VIS 1 Rust Grade A, Adherent Mill Scale. The minimum thickness of the test panel shall be 5 mm.
If coal tar epoxy coating for concrete, the panel shall be concrete
coupons. The surface preparation of concrete shall be in accordance to technical guide ICRI 03730.
5.1.2 Abrasive blast the test panels to near white metal, SSPC SP 10 (SIS Sa 2-½).
5.1.3 The profile of the blasted surface shall be 65-100 micrometers. 5.1.4 Coatings shall be mixed, applied and cured in accordance with the
Vendor's recommendations. Dry film thickness shall be measured and recorded in accordance with SSPC PA 2, and shall meet the following requirements:
Each coat for steel: 300 micrometers maximum per c oat Total coating thickness for steel: 400 - 600 micrometers.
Total coating thickness for concrete: 750 micrometer (30 mils) 5.1.5 Holding Primer
Coating systems employing a holding primer shall be tested as a complete system. Apply the holding primer at the thickness
recommended by the manufacturer. Cure the panel at a temperature of 25ºC ± 2°C for 7 days. Then apply and cure the topcoats in accordance with paragraph 5.1.4.
5.2 Physical Properties Tests
5.2.1 Package Stability of Paint
When stored at 52°C ± 1°C for 6 months in accordance with ASTM D1849, the sample shall meet the following requirements: a) Weight loss - 0
b) Skinning, pressure and corrosion - 10
c) Settling - 6 or better d) Grains, lumps or steaks - 8 or better 5.2.2 Adhesion Test
5.2.2.1 Prepare test panels as in Section 5.1.
inter- by using an adhesion tester, 450 kg capacity, in accordance with ASTM D4541. Lightly sand the coated surface and aluminum dolly and apply an epoxy adhesive. Allow the adhesive to cure as directed by the adhesive supplier. Scribe the coating and adhesive around the dolly prior to testing. Make a minimum of three trials and report the average. The average shall be at least 2750 kPa (400 psi).
5.2.3 Spray Properties
The ready mixed paint shall be easily applied at 300 micrometers to a vertical surface with no tendency to sag, creep or run.
5.2.4 Drying Times
When tested in accordance with ASTM D1640, the through (or dry-to-handle) time shall be 12 hours or less and the dry-to-recoat time shall be in accordance with Vendor's published data sheets.
5.2.5 Cure Time
The paint shall cure completely within 7 days at a temperature of 20°C. 5.2.6 Usable Pot life
At 40°C, the viscosity of the ready-mixed paint shall remain within the range recommended by the manufacturer for spray ability without additional thinning for not less than 1 hour.
5.3 Performance Tests 5.3.1 Immersion Tests
5.3.1.1 Test panels shall be prepared in accordance with paragraph 5.1. 5.3.1.2 All tests shall be performed in duplicate.
5.3.1.3 The fully cured coating shall be tested per NACE TM0174, Procedure B-Immersion Testing and shall be exposed to the following test conditions:
a) Reagent Grade Distilled Water which meets the
requirements of ASTM D1193, Type I. Test solution temperature shall be 70°C ± 2°C.
b) A one-to-one mixture of mineral spirits and brine (5% by weight sodium chloride in distilled water). Test solution
temperature shall be 70°C ± 2°C.
5.3.1.4 At the conclusion of six months exposure, the coating systems shall be evaluated for and shall meet the following criteria:
Standard Acceptable Rating ASTM D714
Evaluating Degree of Blistering of Paints
No blisters ASTM D610
Evaluating Degree of Rusting on Painted Steel Surfaces 9 or better NACE TM0174 (paragraph 6.2.4) Hardness and Adhesion
The coating shall show no more than a two pencil hardness difference and adhesion between wet and dry portions of the panel shall be similar. After conditioning in laboratory for seven days there shall be no difference.
5.3.2 Cathodic Disbondment Test
5.3.2.1 Prepare test panels as in Section 5.1 except that the total dry film thickness shall not exceed 450 micrometers (18 mils). 5.3.2.2 When tested in accordance with ASTM G42 at 70°C, there
shall be no disbonding of the coating after thirty (30) days. 5.3.3 Coating Testing Requirement for Concrete
Submit certified test reports for review by CSD of the coal tar epoxy coatings for soil buried concrete or for internal oily water sump up to 70°C shall include tests on water vapor permeability, chemical and water immersion tests following paragraph 5.3.1.3 test condition a) and b), adhesion value, crack bridging value, elongation value, surface preparation requirement.
6 Method of Packaging
Coating shall be packaged in accordance with 09-SAMSS-060.
Revision Summary
28 June 2009 Revised the “Next Planned Update”. Reaffirmed the contents of the document, and reissued with minor changes.
