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China KRS Series Radiation-Resistant Rotary Platform - Trusted Suppliers & Factory for Nuclear Waste Treatment Solutions
Ordering Information
1 Product series
KRS series rotation stage
2 Construction size
60/100/160mm
3 Ratio
KRS60 = 180
KRS100 = 180
KRS160 = 90 or 180
4 Environmental temperature ratings
| Environmental temperature rating code | Temperature range (°C) | Vacuum class (Pa, optional) | Radiation resistance (Gy, optional) |
|---|---|---|---|
| RHT | -20～+200 | 10-3 | 106 |
| SHT | -20～+200 | 10-3/10-5/10-7 | - |
| HT | -20～+150 | 10-3/10-5/10-7 | - |
| NTL1 | -40～+85 | 10-3/10-5 | - |
| NTL2 | -40～+100 | - | - |
| NTL3 | -65～+125 | 10-3 | - |
| NTL4 | -80～+40 | 10-3 | - |
| NTL5 | -55～+150 | - | - |
5 Vacuum class
Blank = Non-vacuum
V3 = Low pressure or vacuum to 10-3Pa
V5 = Vacuum to 10-5Pa
V7 = Vacuum to 10-7Pa
6 Radiation resistance
Blank = No radiation resistance
RH = Radiation resistance (total dose 106Gy)
7 Designator of mounted motor
e.g.
KH42 = KH series 42mm stepper motor
KVM57 = KVM series 57mm stepper motor
KECM100 = KECM series 100W servo motor
KSSM400 = KSSM series 400W servo motor
Description
Nuclear waste treatment processes involve the transfer, encapsulation, and interim storage of radioactive materials, with all operations carried out remotely within hot cells or shielded enclosures. In such scenarios, motion mechanisms must withstand cumulative radiation doses of up to 1×10⁶ Gy in high-dose-rate fields, while maintaining positioning accuracy and load capacity. The KRS Series Radiation-Resistant Rotary Platform employs radiation-screened insulating materials and metallic structural components, with motor windings and feedback devices reinforced against radiation damage to ensure controlled operation under high-dose conditions. This radiation-resistant rotary platform incorporates design features that eliminate conventional organic seals and greases, replacing them with metal bellows seals and solid-film lubricants to reduce the risk of sealing failure due to radiation-induced aging.
In typical applications, this radiation-resistant rotary platform is installed on the manipulator arm or workpiece indexing table inside hot cells, used for alignment of waste canisters, lid tightening/removal, or switching of sampling bottle positions. The repeatable accuracy of ±0.005° (±0.3′) ensures precise alignment between the manipulator gripper and the target object during encapsulation, reducing the probability of radioactive leakage or jamming incidents caused by positioning errors. This radiation-resistant rotary platform accommodates an ambient temperature range of -80°C to +200°C, covering the operational requirements of high-temperature zones in vitrification processes for high-level waste, as well as low-temperature handling stages in spent fuel reprocessing. Drive options include stepper motor or servo motor, with all electrical connections routed through hermetic feedthroughs to the exterior of the hot cell. Control signals and power cables can be routed within lead-shielded conduits, preventing additional radiation exposure to operating personnel. In existing project deployments, this radiation-resistant rotary platform has accumulated over 12,000 hours of continuous operation without any positioning deviation or shutdown incidents attributable to radiation damage, verifying its engineering suitability for the demanding conditions of the nuclear industry.
Frequently Asked Questions
Q: What is the maximum radiation dose the KRS Series platform can withstand?
The KRS Series Radiation-Resistant Rotary Platform is designed to withstand cumulative radiation doses of up to 1×10⁶ Gy in high-dose-rate fields while maintaining optimal positioning accuracy and load capacity.
Q: What is the operating temperature range of this rotary platform?
It supports an exceptionally wide ambient temperature range from -80°C up to +200°C, making it suitable for both high-temperature vitrification zones and extreme low-temperature handling stages.
Q: How does the platform prevent sealing failures caused by radiation aging?
The platform replaces conventional organic seals and greases with robust metal bellows seals and specialized solid-film lubricants, eliminating the risk of radiation-induced degradation.
Q: What is the repeatable positioning accuracy of the KRS Series?
It features a repeatable accuracy of ±0.005° (±0.3′), ensuring highly precise alignment during remote encapsulation and handling processes, minimizing the risk of jamming or leakage.
Q: What motor options are available for the KRS Series?
The system is compatible with both stepper motors (such as the KH42 and KVM57 series) and servo motors (such as the KECM100 and KSSM400 series) depending on application requirements.
Q: Has the KRS Series been field-tested in nuclear environments?
Yes, the platform has successfully accumulated over 12,000 hours of continuous operation in existing deployments without any positioning deviations or shutdowns due to radiation damage.