With the rapid development of industry, many cities have established factories. However, due to continuous operation and factors like machinery vibrations, factories are prone to quality issues. Therefore, we conduct regular inspections. Sometimes, when a factory encounters problems, reinforcement and renovation work is necessary. Before construction, a detection and assessment report must be prepared. These reports cover several aspects. Today, we'll delve into the inspections before factory reinforcement and renovation.
 
In reality, factory safety and seismic tests must be conducted both before and after the reinforcement construction. Prior to the renovation, it is necessary to re-evaluate and model the factory's structure and load-bearing capacity to provide data support and recommendations for the renovation project and plans. Post-renovation, a review and acceptance of the factory's current condition and drawings are required to ensure the quality of the renovated factory and to meet the requirements for obtaining certificates. This is referred to as the completion acceptance.

Factory safety inspections involve investigating, on-site testing, structural analysis calculations, and assessing the safety of the factory. They are primarily applicable to factories that have identified potential hazards, dangerous signs, or those requiring safety rating assessments.
 
Factory seismic testing refers to the assessment of structural safety and seismic performance during the use of a factory, which may involve changes in its functional use, such as converting a factory into an office building or an office building into a shopping mall. It may also require local modifications, such as opening doorways, creating holes in floor slabs, or removing beams and columns. These factors can impact structural safety, necessitating safety inspections and evaluations. The structure must be recalculated and its safety assessed based on new functional uses and structural layouts. When there are significant changes in function and structure, seismic performance evaluation is also required. Therefore, the factory's functional change testing primarily involves assessing the safety and seismic performance of the factory under altered functional loads.
 
Factory safety inspections typically involve on-site reviews of structural layouts and load conditions, material property testing, crack and damage inspections, settlement and deformation measurements. After structural calculations and analysis, an assessment of the structure's safety is made, along with necessary reinforcement recommendations and treatment.
 
Seismic-resistant buildings are those that must be designed to withstand earthquakes of magnitude 6 or higher. Investigations of major earthquake disasters globally reveal that over 95% of human casualties are due to building damage or collapses. Therefore, conducting seismic performance tests on buildings is a key task in earthquake prevention and disaster reduction efforts. Factory seismic testing involves assessing the safety of a factory under the effects of a specified earthquake magnitude, based on current quality conditions and prescribed seismic fortification requirements.


When it comes to factory buildings or existing projects that have been in use for several years, the following conditions necessitate a factory safety inspection:
 
1) Plans to continue using despite reaching the designed service life.
2) Structural safety concerns have arisen.
3) Change in Operating Environment
4) Change of Use
5) There are significant quality defects present.
6) Suffering from disasters or accidents.
7) Not reached the designed service life.
8) Doubts on reliability.
 
General testing units conduct the following specific testing tasks during the actual implementation of inspections:
 
1) Conduct an investigation of the factory building overview.
2) Component size and reinforcement verification inspection
3) Architectural structural drawing surveying
4) Factory tilt and settlement measurements
5) Investigate the historical evolution of the factory, focusing on key protected areas and protective requirements.
6) Structural material testing
7) Factory damage and condition inspection
8) Seismic Performance Evaluation
9) Structural Calculation and Safety Analysis
10) Structural system review and testing
11) Feasibility Suggestion for Structural Maintenance.
 
The aforementioned factory inspections are primarily conducted to assess the current condition of the facility, offering a comprehensive safety and quality evaluation. Such inspections are essential to ensure the optimal operational status of the building. Following the inspection, the testing company is required to provide a detailed inspection report and offer recommendations and plans for reinforcing the factory as needed.