Detail of GB 50645-2011

Introduction of GB 50645-2011

1 General Provisions 1.0.1 This code is developed to strengthen construction quality management for petrochemical projects, standardize requirements for construction quality acceptance of insulation in petrochemical engineering (hereinafter referred to as the "Insulation Work"). and guarantee insulation construction quality. 1.0.2 This code is applicable to the construction quality acceptance of the external insulation for equipment and piping with design temperature between -196°C and 850°C in new construction, extension and renovation projects in the petrochemical industry. 1.0.3 In addition to this code, the construction quality acceptance of insulation in petrochemical industry shall also comply with the relevant requirements in other current national codes and standards. 2 Terms 2.0.1 inspection lot all objects involved with the quantity of product produced under the same manufacturing conditions or completed at the same work conditions and required for inspection in erection works in accordance with the provisions specified in design documents, standards, codes or contract, inspection and test documents 2.0.2 item work a physical work that is an integral part of sectional work 2.0.3 sectional work a physical work that may be constructed in a standalone basis and is an integral part of unit work or sub-unit work 2.0.4 main item inspection item that is critical to project construction safety and service functions, health and environment in erection works 2.0.5 general item inspection item other than main item in an erection work 2.0.6 insulation layer a structure that is constructed with insulation material and its products and erected over equipment and piping for isolating heat exchange so as to keep stable temperature of fluids in equipment and piping 2.0.7 vapor barrier a structural layer that is provided for avoiding damage to the performance and shape of insulation layer due to water or water vapor in special conditions 2.0.8 cladding a type of metal or non-metal protection jacket that is erected over insulation layer or vapor barrier for protection against external damage 2.0.9 support a type of metal component that is fixed on equipment and piping to withstand the load of insulation layer, vapor barrier or cladding, such as bracket, support ring and support plate 2.0.10 fastener a metal or non-mental component that is used to fix insulation layer, vapor barrier or cladding, such as anchor, bolt, nut, pin, hook nail, rivet, band, strapping, sliding ring and fixed ring

Contents of GB 50645-2011

Foreword I 1 General Provisions 2 Terms 3 Basic Requirements 3.1 Dividing of Construction Quality Acceptance 3.2 Evaluation of Construction Quality Acceptance Results 3.3 Procedure of Construction Quality Acceptance 4 Materials 4.1 Materials of Insulation Layer 4.2 Materials of Vapor Barrier 4.3 Materials of Cladding 4.4 Inspection Quantities 5 Construction Quality Acceptance of Insulation Layer 5.1 General Requirements 5.2 Supports and Fasteners 5.3 Insulation Layer 5.4 Inspection Requirements and Inspection Quantities 6 Construction Quality Acceptance of Vapor Barrier 7 Construction Quality Acceptance of Cladding 7.1 Metal Cladding 7.2 Non-metal Cladding 7.3 Inspection Requirements and Inspection Quantities 8 Quality Inspection Requirements and Records for Insulation Work Appendix A Record for Concealed Item Appendix B Record for Quality Acceptance of Inspection Lot Appendix C Record for Quality Acceptance of Item Work Appendix D Record for Quality Acceptance of Sectional Work