Trenchless UV in-situ curing is a technique that uses ultraviolet light to cure a curing agent, which is commonly used in pipeline rehabilitation and local underground engineering. The following are the main quality control points of the method:
UV lamp power and wavelength control:
Power control: Ensure that the power of the UV lamp meets the design requirements to provide sufficient UV light intensity.
Wavelength control: Ensure that the wavelength of light produced by the UV lamp meets the requirements of the curing agent for effective curing.
Uniform distribution of hardener:
Coating uniformity: Ensure that the coating is evenly distributed on the surface to be cured to prevent uneven curing results.
Curing agent formulation: Control the formulation and amount of hardener to ensure uniform application.
Curing time and speed control:
UV lamp irradiation time: Control the time of UV lamp irradiation to ensure that the curing agent is cured under sufficient UV light exposure.
Curing speed: Adjust the formulation of the curing agent and the intensity of the UV lamp to control the speed of curing.
Temperature Control: Ambient Temperature: Controls the temperature of the construction environment to ensure UV curing within the appropriate temperature range.
Curing agent temperature: Make sure the hardener is at the right temperature before applying it.
The distance and angle between the UV lamp and the working surface:
Distance Control: Control the distance between the UV lamp and the work surface to ensure that the UV light can evenly illuminate the entire work area.
Angle Adjustment: Adjust the angle of the UV lamp so that it maximizes the amount of exposure to the surface that needs to be cured.
On-site monitoring and control systems:
Real-time monitoring: Use a real-time monitoring system to detect the intensity and duration of UV light to ensure that the curing process is monitored in real time.
Automatic control system: Utilize an automatic control system to adjust the UV lamp power and irradiation time to maintain the consistency of the curing process.
Curing effect detection:
Surface Hardness: The hardness of the surface is tested after curing to ensure that the design requirements are met.
Adhesion test: Adhesion testing is performed to ensure good adhesion between the cured layer and the substrate.
Safety Controls: Operator Safety: Ensure that operators wear appropriate personal protective equipment to prevent injury from UV radiation.
Equipment Safety: Perform regular inspections and maintenance of UV lamps and other equipment to ensure their safe operation.
Records & Document Management:
Detailed records: Detailed records of the entire UV in-situ curing process, including equipment parameters, construction parameters, test results, etc.
Document Management: Keep all relevant documents and ensure complete documentation for future maintenance and monitoring.