2012-054 RES AWARDING CONTRACT FOR REHABILITATION OF EAST ELEVATED STORAGE TANK TO CLASSIC PROTECTIVE COATINGS INC

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SSPC-Guide 12 June 1, 1998 Editorial Revisions November 1, 2004 8.2.2 Do not modify or otherwise alter connectors. Use an outlet that is compatible with the connector. 8.2.3 Immediately replace or repair any device or cabie that appears to be worn or broken. 8.3 REPAIRS 8.3.1 Disconnectpowerandremoveanylightsorelectricai apparatus needing repair outside any hazardous atmosphere before performing repairs. 8.3.2 All connections, seals and assemblies must be repaired per the manufacturer's instructions, using the manufacturer's recommended parts. 8.3.3 Parts for repair other than those specified by the manufacturer of the lighting system should not be used. 8.3.4 Replacement bulbs other than those specified by the manufacturer of the Iighting system should not be used. 9. Disclaimer This material has been developed under the published procedures of SS PC: The Society for Protective Coatings, which has been designed to assure the appointment of technically competentcommittees having balanced representation. While these procedures assure the highest degree of care, neither SSPC, its members, nor those participating in its activities accept any liability resulting from compliance or noncompliance with the provisions given herein, for any restrictions imposed on materials or processes, or for the completeness of the text. SSPC has no power or authority to police or enforce compliance with the contents of this document, and any certi- fication of products stating compliance with requirements of this document is made at the peril of the certifier. 10. Notes 10.1 Air cooled lighting systems, which direct the flow of compressed air across the lens or around the globe, help to keep the lens free of contaminants, prolong bulb life, and generally are of higher intensity required for the lighting of areas with high concentrations of airborne dust. 10.2 OTHER PERTINENT STANDARDS: Other industry standards which may be pertinent for illumination in industrial painting projects are listed below. 10.2.1 National Fire Protection Associatlon (NFPA) Standards: 70E Standard for Electrical Safety Requirements for Employee Workplaces 77 Recommended Practice on Static Electricity 497 Recommended Practicenfor the Classifica- tion of Flammable Liquids, Gases, orVapors, and of Hazardous (Classified) Locations for Electrical Installations in Chemical Process Areas. 654 Standard for Prevention of Fire and Dust Explosions from the Manufacturing, Pro- cessing, and Handling of Combustible Particulate Solids 10.2.2 Underwriters' Laboratories (UL) Standards, ANSI Approved: 781 Standard for Portable Electric Lighting Units for Use in Hazardous (Classified) Locations Appendix A. Explosion Hazards A.IBACKGROUND Achieving acceptable levels of illumination by natural or artificial means inthe industrial painting industry is complicated due to the complexity of structures, vision inhibiting dust, and potentially hazardous concentrations of explosive dust or solvent vapors. This appendix has been added to provide some direction, but is not considered a requirement of this guide. A. 2 DEFINITIONS Hazardous locations are classified as Class I, Class II, or Class IIl depending upon the physical properties of the substances which are present. These classes are further subdivided as Division 1 or Division 2. Class I locations: Class I locations are those in which flam- mable gases or vapors are or may be present in the air in quantities sufficient to produce explosive or ignitable mixtures. Class 1 locations include the following: Class I Division 1: A Class I Division I location is a loca- tion (a) in which hazardous concentrations of gases or vapors may exist under normal operating conditions or (b) in which hazardous concentrations of such gases or vapors may exist frequently because of repair or mainte- nance operations or because of leakage or (c) in which breakdown or faulty operation of equipment or processes might release hazardous concentrations (e.g., greater than 10% of the Lower Explosive Limit) of flammable gases or vapors and might also cause simultaneous failure of electric equipment. Class I, Divisfon 2: A Class I, Division 2 location is a location (a) in which volatile flammable liquids or flam- mable gases are handled, processed or used, but in which the hazardous liquids, vapors, orgaseswill normally be confined within closed containers or closed systems from which they can escape only in case of accidental rupture or breakdown of such containers or systems, or 9-50