Shenzhen, China — CESTSEN, a professional manufacturer of radiation safety and monitoring instruments, has officially launched the RAD-S300 submersible radioactive wastewater activity monitor, a state-of-the-art solution purpose-built for nuclear medicine decay pools. Designed and developed in accordance with the HHJ 1188-2021 Radiation Protection and Safety Requirements for Nuclear Medicine standard issued by China’s Ministry of Ecology and Environment, the RAD-S300 delivers real-time, continuous measurement of radioactive activity in decay pool wastewater, helping hospitals meet strict daily supervision requirements and ensuring that treated radioactive liquid waste is discharged only when fully compliant with national standards.

Why Radioactive Wastewater Monitoring Matters

Nuclear medicine departments generate low-level radioactive liquid waste from diagnostic and therapeutic procedures. This waste must be stored in decay pools until its activity falls below regulatory discharge limits. Traditional sampling and laboratory analysis are slow and labor-intensive, creating compliance risks and operational bottlenecks. The RAD-S300 radioactive wastewater activity monitor eliminates these issues with in-situ, real-time measurement directly inside the decay pool, giving radiation safety officers continuous visibility of activity levels without manual sampling.

Key Features of the RAD-S300

• High-sensitivity scintillation detector with a 360-degree axial measurement angle for accurate, representative readings.
• Innovative structural design and patented passive efficiency scale algorithm that simplify calibration and improve long-term stability.
• Direct submersible installation — the probe is inserted vertically and stably at the bottom of the decay pool, with no bypass piping required.
• IP68 waterproof rating, ensuring reliable operation in submerged wastewater environments.
• Flexible measurement cycles — default 30 seconds per measurement, fully user-configurable.
• Standard Modbus RTU 485 communication, compatible with mainstream PLCs, with ready-to-use communication routines included.
• Low-background shielded lead chamber (≥5 mmPb) that minimizes environmental interference.

Technical Specifications

System Configuration

Each RAD-S300 system comprises three main components: the low-background shielded lead chamber, the wastewater activity detector, and a central control host or PLC controller (optional). This modular architecture allows seamless integration into existing hospital radiation protection and waste management workflows.

Applications

The RAD-S300 radioactive wastewater activity monitor is ideal for hospital nuclear medicine departments, oncology centers, isotope laboratories, and centralized radioactive waste treatment facilities that operate decay tanks or decay pools and need reliable, documented evidence of discharge compliance.

About CESTSEN

CESTSEN is a Shenzhen-based manufacturer specializing in radiation protection and monitoring solutions for medical and industrial applications. Combining innovative engineering with rigorous quality control, CESTSEN supports customers worldwide with dependable instruments for radiation safety management.

For more information about the RAD-S300 radioactive wastewater activity monitor and other CESTSEN radiation monitoring products, please contact our sales team.