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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


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 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 Test panels shall be prepared in accordance with paragraph 5.1. All tests shall be performed in duplicate. 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. 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 Prepare test panels as in Section 5.1 except that the total dry film thickness shall not exceed 450 micrometers (18 mils). 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 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.


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