Yan'an Mobile Toilet Safety Inspection

The safety inspection of mobile toilets in Yan'an should be carried out comprehensively from multiple aspects, including electrical safety, structural safety, wind and earthquake resistance, etc..

I. Electrical Safety Inspection
Electrical safety is one of the core elements of mobile toilet safety inspections. Instruments such as voltmeters and ammeters are required to measure the working voltage and current of lighting, ventilation, heating, and other equipment to ensure they are within safe ranges. The grounding resistance of the electrical system should be checked to prevent the risk of electric leakage. Short-circuit and electric leakage scenarios should be simulated to verify whether the leakage protectors can quickly cut off the power supply. Additionally, the sensitivity of automatic control switches and buttons should be checked, and the installation of doors and windows should comply with safety standards to avoid accidents caused by operational failures or structural defects.

II. Structural Safety Inspection
Structural stability directly affects usage safety. During inspections, tools such as infrared distance meters and tape measures should be used to check for tilting, cracks, or deformation in walls, floors, and roofs. Push tests should be conducted to evaluate resistance to overturning, wind, and earthquakes. For load-bearing components (such as steel beams and columns), aging and deformation should be checked, with a focus on inspecting node connections (such as welds and bolts) for looseness or cracking. If necessary, non-destructive testing techniques such as ultrasonic and magnetic particle testing should be employed to verify weld quality. Additionally, samples of materials such as steel should be tested for tensile strength, yield strength, and other indicators to ensure material performance meets standards.

III. Specialized Wind and Earthquake Resistance Inspection
Such inspections should be carried out by professional institutions. By simulating the effects of wind and earthquake forces, the overall structural stability and the stability of supporting structures should be evaluated. Strength tests should be conducted on materials such as steel structures and plastics to ensure they have sufficient wind and earthquake resistance capabilities. Protective measures such as fixed and reinforced facilities should be checked for completeness and their ability to protect users under adverse conditions. Furthermore, professional equipment should be used to test parameters such as wind pressure resistance and vibration resistance, and adaptability under high-temperature, low-temperature, and humid environments should be evaluated.

IV. Inspection Process and Precautions
Inspections should follow the principle of 'electrical first, then structural; local first, then overall,' with a focus on identifying hidden hazards in concealed works. The inspection report should clearly indicate risk levels and provide recommendations for rectification. For wind and earthquake resistance inspections, a qualified third-party institution must be selected to ensure the authority of the results. During daily use, electrical wiring should be regularly maintained, and structural components should be tightened to prevent performance degradation due to long-term exposure to harsh environments.