Mobile Toilet Inspection Standards
The inspection standards for mobile toilets cover multiple aspects such as equipment quality, structural safety, appearance and decoration, sealing and waterproofing, tank sealing, and hygiene conditions, as detailed below:
Equipment Quality and Performance: The equipment must be brand new and unused, fully complying with the quality, specifications, and performance requirements specified in the bidding technical documents. Under correct installation, use, and maintenance conditions, it should maintain satisfactory performance throughout its service life. The quantity and materials used must also strictly adhere to the technical specifications outlined in the bidding documents.
Structural Safety: The overall structure should be stable and capable of withstanding overturning forces, with an overall wind resistance of no less than Level 10 and an earthquake resistance of no less than Level 8, ensuring a service life of at least 10 years. Steel structure welding must comply with the JGJ81 standard, while anti-corrosion and anti-rust treatments must meet the GB50212 standard. The main load-bearing components should show no significant aging or deformation, with no abnormalities at the connections of stressed steel members. The connections between steel beams and columns should be reliable, with no welding defects or cracks.
Appearance and Decoration Quality: Visual inspection is required to ensure that the toilet's exterior, interior, sanitary ware, and signage are complete and effective. The error between the measured exterior and interior dimensions and those on the design drawings should not exceed 5mm. The decorative layer should be flat and free of depressions, firmly attached, with a smooth, clean, aesthetically pleasing surface that is rainproof and easy to clean and flush. The caulking should be sealed and connected without any leaks or water seepage. The floor should be flat and sealed, with no water seepage or ponding.
Sealing and Waterproofing: Use a water jet, adjusting the nozzle pressure to 0.1MPa and maintaining a spraying distance of 500mm, to continuously spray water along the exterior walls, corners, and roof connections of the mobile toilet for 15 minutes. After stopping for 1 hour, check for any leakage.
Tank Sealing Performance: Fill the tank with water and let it stand for more than 1 hour to check for any leakage in the storage and fecal tanks. Visually inspect the visible parts of the water supply and drainage pipelines for neat, smooth, stable, and reliable arrangement, with no leakage. Check the partition between the cleanout port and the interior space of the mobile toilet for tightness. Use a stopwatch to test the action completion time of the toilet fixture in its sealed state, taking the average of five consecutive measurements. The results should meet the requirements for self-cleaning and odor prevention functions, with the automatic cleaning and sealing action time of the toilet compartment during fecal discharge not exceeding 3 seconds. Visually inspect whether the fecal storage tank is isolated from the interior of the toilet compartment, and whether the vent pipe, fecal extraction port, and emptying valve are reasonably set. Check whether the cleanout port cover opens and closes flexibly and seals well.
Hygiene Conditions: Visual inspection is required to check for any obvious stains or garbage inside the public toilet. Use bacterial culture dishes for sampling, followed by bacterial culture and analysis to detect hygiene conditions.
