Qualification Requirements for Inorganic
Zinc Primer (APCS-17A) and (APCS-17B)
Paints and Coatings Standards Committee Members
Barouky, F.F., Chairman Hammad, B.S., Vice Chairman Al-Homayed, M.A.
Al-Khashram, M.S. Al-Nujaim, S.A. Al-Seba, Z.A. Suller, A.A.
Saudi Aramco DeskTop Standards
Table of Contents1 Scope...…... 2
2 Conflicts and Deviations...…... 2
3 References...….. 3
4 General Requirements...…... 4
5 Qualification Tests and Requirements...….. 4
1 Scope
This Specification defines the minimum mandatory requirements for qualifying individual coating products for use in Saudi Aramco's approved protective coating systems APCS-17A and APCS-17B for inorganic zinc coatings. 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, who wish to obtain initial approval for products 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 applicable Saudi Aramco
Materials System Specifications (SAMSSs), Engineering Standards (SAESs), Standard Drawings (SASDs), or industry standards, codes, 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
References noted below shall be of the latest edition, addenda, or revision in effect:
a) On the date of the Purchase Order.
b) On the date testing is begun if there is no Purchase Order involved.
3.1 Saudi Aramco References
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 Standards
SAES-H-101 APCS-17A Inorganic Zinc Primer (Solvent Based) SAES-H-101 APCS-17B Inorganic Zinc Primer (Water Based)
3.2 Industry Codes and Standards
American Society for Testing and Materials
ASTM A36 Structural Steel
ASTM B117 Salt Spray (Fog) Testing
ASTM D610 Evaluating Degree of Rusting on Painted Steel Surfaces
ASTM D660 Evaluating Degree of Checking of Exterior Paints ASTM D661 Evaluating Degree of Cracking of Exterior Paints ASTM D822 Operating Light-and-water Exposure Apparatus
(Carbon-arc Type) for Testing Paint, Varnish, Lacquer, and Related Products
ASTM D714 Evaluating Degree of Blistering of Paints ASTM D1654 Method for Evaluation of Painted or Coated
Specimens Subjected to Corrosive Environments
ASTM G26 Operating Light-Exposure Apparatus (Xenon-Arc Type) With and Without Water for Exposure of Nonmetallic Materials
The Society for Protective Coatings
SSPC-PA2 Measurement of Dry Coating Thickness with Magnetic Gages
SSPC-Paint 20 Zinc-Rich Primers (Type I, Inorganic) dated November 1, 1982
SSPC-Vis 1 Visual Standard for Abrasive Blast Cleaned Steel
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 shall submit a certified test report documenting 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. the RSA shall decide if the data presented by the Supplier satisfies all the requirements
4.3 All initial product qualification tests shall be carried out at no cost to Saudi
Aramco.
5 Qualification Tests and Requirements
5.1 Modification to SSPC-Paint 20
All paint supplied under this Specification shall meet the requirements of SSPC-Paint 20 except as modified below:
Paragraph 5.6: Shall be replaced by paragraph 4.2.2.1 of this Specification. Paragraph 5.9: Shall be replaced by paragraph 4.2.3 of this Specification. Paragraph 6, 7, 8, 9 and 10.8: Delete requirements
5.2 Requirements in Addition to SSPC - Paint 20 5.2.1 Physical Property Tests
Hardness: When cured for 24 hours at 20ºC and 50 to 60% relative humidity, the cured film shall have a hardness equivalent of not less than 2H when tested in accordance with ASTM D3363.
5.2.2 Steel Panel Preparation
5.2.2.1 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.
5.2.2.2 The surface cleanliness of the test panels shall meet (but not
exceed) the requirements of SSPC SP10, Near White Blast Cleaning (SIS Sa2-½, Very Thorough Blast Cleaning).
5.2.2.3 The profile of blasted surface shall be 40-65 micrometers
(1.5 - 2.5 mils) and shall be determined with replica tape.
5.2.2.4 Mix, apply, and cure, the in accordance with the Vendor's
recommendations. Measure and report the dry film thickness in accordance with SSPC-PA2. The dry film thickness shall be in the range of 65-100 micrometers (2.5 - 4 mils).
5.2.3 Performance Tests
Scribe the fully cured coating in accordance with ASTM D1654 and expose alternately in a Weather-O-Meter in accordance with either (a) ASTM D822, Procedure B (b) ASTM G26, Method B, or (c) ASTM G-53 and a salt fog cabinet in accordance with ASTM B117. Panels are to be initially placed in the Weather-O-Meter for 100 hours and then tested in the salt fog cabinet for 200 hours. This procedure shall be continued until the test panels are exposed for 500 hours in Weather-O-Meter and 1000 hours in salt fog. At the conclusion of the test, each coating shall be evaluated for and shall meet the criteria of Table 1.
Table 1 – Performance Test
Standard Acceptable Rating
ASTM D714 Evaluating Degree of
Blistering of Paints
No blisters
ASTM D660 Evaluating Degree of
Checking of Exterior Paints
No checking
ASTM D661 Evaluating Degree of
Cracking of Exterior Paints
No cracking
ASTM D610 Evaluating Degree of
Rusting on Painted Steel Surfaces
10
ASTM D1654 Standard Evaluation of
Painted or Coated Speciments Subjected to Corrosive Environments
Rating of Failure at Scribe shall be: 10.
N/A Erosion No more than 10% of the
total average thickness has been removed.
5.2.4 Recoat Time
Prepare two test panels in accordance with paragraph 5.2.2. Cure the panels for 48 hours at 55 to 80% relative humidity and 25ºC ± 1ºC. Topcoat one of the panels with 100-150 micrometers (4.0 - 6.0 mils) of an epoxy paint (APCS-1A topcoat or equivalent). Topcoat the other panel with 15 - 40 micrometers (0.5 - 1.5 mils) of a silicone aluminum paint (APCS-11A topcoat or equivalent). Allow the topcoats to cure. The panels shall show no signs of blistering or pinholing.
6 Method of Packaging
Coatings shall be Packaged in accordance with 09-SAMSS-060.
Revision Summary
31 October, 2004 Revised the "Next Planned Update". Reaffirmed the contents of the document and reissued with no other changes.
