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SSPC-SP 5 March 1, 1985 abrasive recovery. 6.2.3 Dry abrasive blasting, using a closed cycle, recirculating abrasive system with centrifugal wheels and abrasive. 6.3 Other methods of surface preparation (such as wet abrasive blasting) may be used to achieve a White Metal Blast Cleaned surface by mutual agreement be- tween the party responsible for performing the work and the party responsible for establishing the requirements or his representative. `NOTE: If wet abrasive blasting is used, information on the use of inhibitors to prevent the formation of rust im- mediately after wet blast cleaning is contained in Section A.9 of the Appendix. 7. Procedures Following Blast Cleaning and Immediately Prior to Painting 7.1 Visible deposits of oil, grease, or other con- taminants shall be removed by any of the methods specified in SSPC-SP 1 or other methods agreed upon by the party responsible for establishing the requirements and the party responsible for performing the work. 7.2 Dust and loose residues shall be removed from prepared surfaces by brushing, blowing off with clean, dry air, vacuum cleaning or other methods agreed upon by the party responsible for establishing the requirements and the party responsible for performing the work. Moisture separators, oil separators, traps, or other equipment may be necessary to achieve clean, dry air. 7.3 After blast cleaning, surface imperfections which remain (i.e., sharp fins, sharp edges, weld spatter, burning slag, scabs, slivers, etc.) shall be removed to the extent re- quired in the procurement documents (project specifica- tion). Any damage to the surface profile resulting from the removal of surface imperfections shall be corrected to meet the requirements of section 2.3. "NOTE: Additional information on surface imperfections is contained in Section A.5 of the Appendix. 7.4 Any visible rust that forms on the surface of the steel after blast cleaning shall be removed by reblasting the rusted areas to meet the requirements of this specification before painting. "NOTE: Information on rust -back (rerusting) and surface condensation is contained in Sections A.7 and A.8 of the Appendix. 8. Inspection 8.1 Work and materials supplied under this specifica- tion are subject to inspection by the party responsible for establishing the requirements or his representative. Materials and work areas shall be accessible to the in- spector. The procedures and times of inspection shall be as agreed upon by the party responsible for establishing the requirements and the party responsible for performing the work. 8.2 Conditions not complying with this specification shall be corrected. In case of dispute the arbitration or settlement procedure established in the procurement documents (project specification) shall be followed. If no arbitration or settlement procedure is established, then the procedure established by the American Arbitration Association shall be used. 8.3 The procurement documents (project specifica- tion) should establish the responsibility for inspection and for any required affidavit certifying compliance with the specification. 9. Safety and Environmental Requirements 9.1 Blast cleaning is a hazardous operation. Therefore, all work shall be conducted in such a manner to comply with all applicable insurance underwriter, local, state, and federal safety and environmental rules and requirements. "NOTE: SSPC-PA Guide 3, "A Guide to Safety in Paint Application," addresses safety concerns for coating work. 10.1 While every precaution is taken to insure that all information furnished in SSPC specifications is as ac- curate, complete, and useful as possible, the Steel Struc- tures Painting Council cannot assume responsibility nor incur any obligation resulting from the use of any mate- rials, paints, or methods specified therein, or of the specification itself. 10.2 Additional information and data relative to this specification are contained in the following brief Appen- dix. More detailed information and data are presented in a separate document, SSPC-SP COM, "Surface Preparation Commentary." The recommendations contained in the Notes, Appendix, and SSPC-SP COM are believed to repre- sent good practice, but are not to be considered as re- quirements of the specification. The table below lists the subjects discussed relevant to White Metal Blast Cleaning and appropriate section of SSPC-SP COM. Subject Commentary Section Abrasive Selection .............. 5• Degree of Cleaning .............. 11.5 Film Thickness ................. 10. Wet Abrasive Blast Cleaning...... 9• Maintenance Painting ........... 3.2 Rust Back (Rerusting) ........... 8. SurfaceProfile ................. 6. Visual Standards ............... 7. Weld Spatter ................... 4.1