Caiyan Industrial Factory Safety Assessment Report, Wuhan Factory Inspection Agency

Caiyan Industrial Factory Safety Assessment Report, Wuhan Factory Inspection Agency Inspection Items: Three integrated projects including the load-bearing structural system, structural layout and support system, and envelope structural system. The comprehensive assessment of the factory is based on the structural system, current condition of the structure, process layout, usage conditions, and assessment objectives, dividing the entire factory, structural, or section systems into one or more assessment units for comprehensive evaluation.

The general process for factory audits typically includes:
Hire a property assessment agency to conduct a factory inspection and property evaluation.
2. The housing appraisal institution assigns a housing safety appraiser to conduct on-site inspections, detailing the usage history, structural system, and damage conditions of the factory.
3. The **structural integrity** of Caidian industrial factory buildings can be verified through on-site investigation, which may involve documentation in writing, drawings, photographs, or videos, recording the main structure and load-bearing components.
4. The mechanical property test of the factory building structure materials should be determined based on the need for structural bearing capacity calculation.
5. As necessary, establish a calculation model based on the structural characteristics of the factory building. Evaluate the safety reserve of the factory building's structure according to the actual mechanical properties of the structural materials and the applied loads, as well as the current regulations.

General Process for Safety Inspection and Appraisal of Steel Structure Factories:
1. Conduct on-site investigations on the type of house structure, number of floors, house address, construction year, orientation, general condition of house decoration, and the purpose of the house.
2. Review the steel structure layout, component dimensions, and floor heights of the buildings based on the drawings provided by the client; for those without design drawings, conduct on-site measurements of the existing upper structure layout, component dimensions, and floor heights for each building and draw structural plans.
3. Inspect and appraise the current exterior damages of steel components in houses, including cracks, damages, coating peeling, rust on steel, joint injuries, welding appearance defects, and connection tightness conditions.
4. Conduct magnetic particle or penetrant testing in accordance with regional standard specifications to inspect and verify the surface quality of steel components.
5. Select certain steel trusses and steel structural components in accordance with regional inspection and acceptance standards. Utilize ultrasonic or magnetic particle testing for weld inspection to determine the presence of defects such as blowholes, slag inclusions, arc pit cracks, and arc burns.
6. Conduct a torque coefficient assessment of high-tension bolts in steel structural connections using an axial force gauge and a torque wrench.
7. Utilize electronic theodolites to measure the vertical components of the building for their verticality, analyzing for any signs of tilting, deformation, or uneven settlement. The specific number of inspections is determined based on the on-site conditions and relevant standards.
8. Wuhan's factory inspection agency uses total station or stringing methods to detect and assess the deflection deformation of trusses, girder structures, and their components.
9. We use calipers and micrometers to measure and verify the thickness of steel components.
10. Utilize ultrasonic thickness gauges to inspect and verify the wall thickness of pipe steel components.
11. Conduct strength assessment of steel using the surface hardness method.
12. Utilize a coating thickness gauge to inspect and verify the corrosion or fire-resistant coating thickness on steel structures.
13. Conduct magnetic particle inspection on truss structure ball bolts according to regional specification standards.
14. The Wuhan factory building inspection report, based on actual on-site testing data and design requirements, calculates the load-bearing capacity of the upper structure of the building in accordance with the "Code for Design of Building Structures" (GB50009-2001) and local building structure design specifications. It evaluates whether the current load-bearing capacity of the building meets the regional specification requirements and the future safety usage requirements.
15. Based on the inspection, testing conditions, and calculation results, determine the structural safety of the building in compliance with the "Civil Building Safety Assessment Standard" (GB 50292-1999) or the "Industrial Building Safety Assessment Standard" (GB50144-2008). Assess the current safety grade of the building, and propose reasonable treatment suggestions for components that do not meet safety usage requirements and those currently showing structural damage.