Detail of GB/T 51075-2015

Introduction of GB/T 51075-2015

1 General Provisions 1.0.1 This provision defines the purpose of formulating this code. 1.0.2 This provision defines the range this code is applicable to. 1.0.3 This provision reflects the roles of other relevant standards and specifications.Mineral processing equipment installation involves a lot relating to engineering technique, safety, environmental protection.Besides specialized equipment installation, such installation also covers manufacturing and installation of hydraulic, pneumatic and lubrication equipment, lifting equipment, continuous transportation equipment, dust-removing equipment, general equipment, medium pipelines of different types, and manufacturing, installation, anticorrosion and thermal insulation of technical steel structure;therefore, in addition to the requirements stipulated in this code, the installation of mineral processing equipment shall also comply with the requirements stipulated in the current relevant standards of the nation. 2 Terminologies 2.0.1 aligning it is the process to adjust the position and state of equipment and parts to ensure the conformance to the requirements of design and this code. 2.0.2 dye method The method for determining the manufacture, assembly and installation quality of parts by applying or pasting colored materials on contact surfaces of mechanical parts and checking the contact condition. 2.0.3 scraping The method of treating the surface of parts by scraping off higher points from contact surfaces of parts with a tool. 2.0.4 joint inspection joint inspection carried out jointly by the owner or the general contractor, the supervisor and the contractor on the mechanical equipment that has been installed. 3 Basic Requirement 3.0.1 Design documents and drawings shall be available for construction and self-examination, joint examination and technical interpretation of design intention shall be down for drawings.Installation of equipment shall meet the requirements of design documents. 3.0.2 Technical documents such as the construction organization design shall be prepared for mineral processing equipment installation engineering. 3.0.3 Design alteration will be needed from time to time during construction.This provision clearly specifies that the contractor has no right to alter the design drawing, and shall contact the owner and designer promptly in case any problem is found with the construction drawing during construction.To alter construction drawings, required formal design alternation formalities from the design institute must be provided. 3.0.4 Using unqualified measuring instruments that have not been metrologically verified in installation will bring about unpredictable serious consequences to engineering quality and economic losses to the enterprise.Therefore, this provision stresses measuring instruments that have been metrologically verified and calibrated shall be used for mineral processing equipment.In addition, precision of measuring instruments shall match that in the quality standard, and their grade shall meet the requirements of quality standard. 3.0.5 Welding procedure qualification shall be provided prior to welding work and welding procedure specifications shall be made according to a qualified welding procedure qualification report. 3.0.6 The construction road at the mechanical equipment installation site shall be clear;water, electricity, air and other resources for construction shall be available. 3.0.7 The quality of equipment foundation shall meet relevant requirements of current national standard GB50204 Code for Construction Quality Acceptance of Concrete Structure Engineering and acceptance material and records shall be provided. 3.0.8 Processing equipment installation involves a lot of works of different types, such as civil work and electrical work, different type of works shall be shifted according to specified procedures.For instance, the installation of the equipment will follow after the foundation work is completed.During shift between different types of work, required inspection shall be carried out and corresponding quality records shall be made. 3.0.9 Concealed works in mineral processing equipment installation mainly refer to equipment secondary grouting, gearbox sealing and large bearing support sealing.Secondary grouting is to grout between the foundation and the equipment base after the equipment is installed and accepted.Secondary grouting shall be in accordance with the technical design document and the current national standard GB50231 General Code for Construction and Acceptance of Mechanical Equipment Installation Engineering. 3.0.10 Special schemes shall be made for construction in winter and rainy periods. 3.0.11 Test run of equipment shall be in accordance with the following requirements: 1 Test run scheme shall be prepared before test run; 2 Warning lines and signs shall be set up in test run area; 3 The safety device of equipment shall be complete and work reliably; 4 Hydraulic, lubrication and cooling water system shall operate normally; 5 Each rotating part shall be operating smoothly without abnormal sound and fasteners shall not be loose; 6 The temperature rise and max temperature of the sliding bearing shall not exceed 35℃ and 70℃ respectively and that of the rolling bearing shall not exceed 40℃ and 80℃ respectively; 7 Each rotating part shall be running normally and the test run shall not be less than 2h after the bearing temperature is stable; 8 After the no-load test run, connecting bolts shall be checked for loosening, and if the bolts are loose, tighten them. 4 Equipment Foundation, Anchor Bolt and Base Plate 4.1 General Requirement 4.1.1 This chapter is applicable to the installation of foundation, anchor bolt and base plate of mineral processing equipment. 4.1.2 Due to the heavy weight of mineral processing equipment (such as crushing equipment) and excessive vibration when operating in production, designer shall determine whether or not to carry out settlement observation for equipment foundation according to the geological condition. 4.2 Equipment Foundation 4.2.1 Before installation of equipment, equipment foundation contractor shall hand over the foundation to the equipment installation organization.Foundation contractor shall include the settlement observation record of main equipment foundation and measurement record of equipment foundation in the shift material.Elevation of foundation, longitudinal and horizontal centerlines of equipment, and positions of holes reserved for anchor bolts shall be included in the measurement record.The equipment installation organization shall re-measure the handed-over foundation and may install the equipment after it is qualified. 4.2.2 The appearance of equipment foundation shall be inspected and oil dirt, water and other contaminations on its surface and in the holes reserved for anchor bolts shall be removed thoroughly;threads and nuts of buried anchor bolts shall be kept in good condition. 4.2.3 Inspection items specified herein shall be completed prior to equipment lifting. 4.2.4 There shall be measuring data for foundation and the data shall be handed over. 4.2.5 Before installation of equipment, the datum line for equipment installation shall be determined according to the construction drawing and the measurement control network.The planimetric position and elevation for equipment installation shall be measured in accordance with the established datum line.For main equipment and continuous production line, permanent centerline plate and elevation datum mark shall be embedded to provide reliable benchmark for installation construction and future maintenance.

Contents of GB/T 51075-2015