How To Use Oil Base Zinc Oxide Painting System
PAINTING SYSTEM NO. 1.10 – Four-Coat Oil Base Zinc Oxide Painting System (Without Lead or Chromate Pigment)
1.1 This speciﬁcation covers an oil base, lead- and chromate-free painting system for steel cleaned with hand or power tools.
1.2 This system is suitable for use on parts or structures exposed in Environmental Zone 1A (interior, normally dry) and Zone 1 B (exterior, normally dry).
1.3 The ﬁnish paint allows for a choice of durable, fade-resistant colors.
2.1 This painting system consists of surface preparation by solvent cleaning and hand or power tool cleaning, two coats of zinc oxide linseed oil/alkyd primer, and two coats of alkyd white or tinted ﬁnish coat.
3. Referenced Standards
3.1 The latest issue, revision, or amendment of the referenced standards in effect on the date of invitation to bid shall govern, unless otherwise speciﬁed. Standards marked with an asterisk (*) are referenced only in the Notes, which are not requirements of this speciﬁcation.
3.2 If there is a conﬂict between the requirements of any of the cited referenced standards and this speciﬁcation, the requirements of this speciﬁcation shall prevail.
3.3 SSPC STANDARDS AND JOINT STANDARDS:
PA 1 Shop, Field, and Maintenance Painting of Steel
PA 2 Measurement of Dry Coating Thickness With Magnetic Gages
PA Guide 4 Guide to Maintenance Repainting with Oil Base or Alkyd Painting Systems
Paint 25 Red Iron Oxide, Zinc Oxide, Raw Lin seed Oil, and Alkyd Primer
Paint 101 Aluminum Alkyd Paint
Paint 104 White or Tinted Alkyd Paint
Paint 108 High-Build Thixotropic Leaﬁng Aluminum Paint
SP 2 Hand Tool Cleaning
SP 3 Power Tool Cleaning
SP 5/NACE No. 1 White Metal Blast Cleaning
SP 6/NACE No. 3 Commercial Blast Cleaning
SP 7/NACE No. 4 Brush-Off Blast Cleaning
SP 8 Pickling
SP 10/NACE No. 2 Near-White Blast Cleaning
3.4 AMERICAN SOCIETY FOR TESTING AND MATERIALS (ASTM) STANDARD:
D 3925 Standard Practice for Sampling Liquid Paints and Related Pigmented Coatings
4. Surface Preparation
4.1 SSPC-SP 2, “Hand Tool Cleaning,” or SSPC-SP 3, “Power Tool Cleaning.” If speciﬁed in the procurement documents, blast cleaning or pickling shall be substituted (SSPC-SP 5, 6, 7, 8, or 10).
5.1 PRIMER: SSPC-Paint 25, “Red Iron Oxide, Zinc Oxide, Raw Linseed Oil and Alkyd Primer.”
5.2 SECOND COAT: SSPC-Paint 25, “Red Iron Oxide, Zinc Oxide, Raw Linseed Oil and Alkyd Primer” tinted with carbon black or lampblack dispersion to a color contrasting with that of the primer.
5.3 THIRD COAT: SSPC-Paint 104, “White or Tinted Alkyd Paint,” tinted with carbon black or lampblack dispersion to a color contrasting with that of the ﬁnish paint.
5.4 FINISH COAT: SSPC-Paint 104, “White or Tinted Alkyd Paint.” The color must be speciﬁed.
5.5 ALTERNATIVE FINISH COAT: If speciﬁed in the procurement documents, a ﬁnish coat complying with speciﬁcation SSPC-Paint 101, “Aluminum Alkyd Paint, Leaﬁng (Type I),” shall be applied in place of the standard ﬁnish coat. If this alternative ﬁnish coat is used, then the intermediate coat shall consist of one coat of SSPC-Paint 101, “Alkyd Aluminum Paint, Non-Leaﬁ ng (Type II).”
5.6 ALTERNATIVE FINISH COAT: If speciﬁed in the procurement documents, a ﬁnish coat complying with speciﬁcation SSPC-Paint 108, “High-Build Thixotropic Leafing Aluminum Paint,” shall be applied in place of the standard ﬁnish coat. If this alternative ﬁnish coat is used, then no third coat shall be required, but the dry ﬁlm thickness shall not be less than 64 micrometers (2.5 mils) for the ﬁnish coat and 150 micrometers (6.0 mils) for the painting system.
6. Paint Application
6.1 PAINT APPLICATION: Follow requirements of SSPCPA 1, “Shop, Field, and Maintenance Painting of Steel.”
6.2 TOUCH-UP PAINTING: In accordance with speciﬁcation SSPC-PA 1, “Shop, Field, and Maintenance Painting of Steel” and in particular with the Section thereof entitled “Field Painting.”
6.3 MAINTENANCE PAINTING:The provisions of SSPCPA Guide 4, “Guide to Maintenance Repainting with Oil Base or Alkyd Painting Systems” should be followed.
6.4 NUMBER OF COATS: Minimum of four.
6.5 DRY FILM THICKNESS OF PAINT SYSTEM: Not less than the following as measured in accordance with SSPC-PA 2, “Measurement of Dry Coating Thickness with Magnetic Gages”: primer 50 micrometers (2.0 mils); for the four coat painting system 150 micrometers (6.0 mils). If alternative ﬁnish coat is used as indicated in Section 5.6, see that section for dry ﬁlm thickness requirements.
7.1 All work and materials supplied under this speciﬁcation are subject to timely inspection by the purchaser or his authorized representative. The contractor shall correct such work or replace such material as is found defective under this speciﬁcation (See Note 9.1.). In case of dispute, unless otherwise speciﬁed, the arbitration or settlement procedure established in the procurement documents shall be followed. If no arbitration or settlement procedure is established, then a procedure mutually agreeable to purchaser, material supplier, and contractor shall be used.
7.2 Samples of paints under this painting system may be requested by the purchaser and shall be supplied upon request along with the manufacturer’s name and identiﬁcation for the materials. Samples may be requested at the time the purchase order is placed, or may be taken from unopened containers at the job site.
7.3 Unless otherwise speciﬁed, the sampling shall be in accordance with ASTM D 3925.
8.1 While every precaution is taken to ensure that all information furnished in SSPC standards and speciﬁcations is as accurate, complete, and useful as possible, SSPC cannot assume responsibility nor incur any obligation resulting from the use of any materials, coatings, or methods speciﬁed herein, or of the speciﬁcation or standard itself.
8.2 This painting system speciﬁcation does not attempt to address problems concerning safety associated with its use. The user of this speciﬁcation, as well as the user of all products or practices described herein, is responsible for instituting appropriate health and safety practices and for insuring compliance with all governmental regulations.
Notes are not a requirement of this speciﬁcation.
9.1 The procurement documents should establish the responsibility for samples, testing, and any required afﬁdavit certifying full compliance with the painting system speciﬁcation.