Nuclear Qualified Proximity / Limit Switches
Nuclear Qualified Proximity / Limit Switches
Euroswitch have a broad range of nuclear-qualified proximity limit switches to provide dependable and robust sensing solutions in safety-critical applications.
Building upon the hazardous area certification attained for the FS range of sensors, Euroswitch Nuclear Approved range provides the utmost robustness and resilience to the harshest conditions found in the Nuclear Power Generation industry.
Key Features
Qualified for Containment, Harsh and Mild Levels
- Life of 60 years + 1 Post Accident
- Versions suitable for K1 (Inside Containment), K2 and K3 environments.
- Safety-critical certified for SIL 2 and SIL 3.
- Radiation aged to >1MRad (1000kGy).
- High-temperature models (260°C excursion)
- Models available for high pressure (10,000 psi)
- Seismic and vibration resilient with solid contact pressure to prevent chatter.
- Non-contact proximity sensing technology.
- Immune to EMC and RFI.
- Multi-Voltage capability in one package.
- Volt free, dry contacts (no power consumption).
Applications
- Motorised Valves
- Cylinder Extension/ Retraction
- Airlocks and Hatches
- Cranes and Lifts
- Direct Damper Position Indication
- Containment Door Position Indication
- Fuel Transfer / Control rods
- Refuelling and transfer machines allowing valves to be immersed during LOCA
Construction
- 316L Stainless Steel billet machined housing.
- Models available with integral leads (PEEK insulated) IP66/67/68.
- Wireable connection head available with PEEK terminals for connection of customer cable in plant. IP 66/67.
- Available with qualified connectors to suit plant standardisation. i.e. Souriau 8N45 8NA4G, SAIB NURS.
- Compact and lightweight design
- SPDT and DPDT Contact Forms
- High and low current switch capability
- No mechanical lever arm torque, or adjustment required throughout lifetime.
- Mechanical Life of 1.5 million operations (max current).
Specification Compatibility
IEEE 60780-323-2016 Nuclear facilities — Electrical equipment important to safety – Qualification
IEEE 382-2006 Qualification of Safety-Related Actuators for Nuclear Power Generating Stations
IEEE 572-2019 Qualification of Class 1E Connection Assemblies for Nuclear Power Generating Stations and Other Nuclear Facilities
IEEE 344-2013 Seismic Qualification of Equipment for Nuclear Power Generating Stations
RCC-E K1 Design and construction rules for electrical equipment of PWR nuclear islands
KTA 3505 2015 -11 Type Testing of Measuring Sensors and Transducers of the Instrumentation and Control System Important to Safety
KTA 3506 2017-11 System Testing of the Instrumentation and Control Equipment Important to Safety of Nuclear Power Plants
KTA 3507 2014-11 Factory Tests, Post-Repair Tests and the Certification of Proven Performance of Modules and Devices of the Instrumentation and Control System Important to Safety
AECL98-30830-TS-008 Seismic qualification of valves
AECL98-60000-TS-005 Seismic qualification of Instruments and Control Equipment
AECL98-60000-TS-006 Environmental qualification of Instruments and Control Equipment
GO™ switch Safety Related Dry Contact Proximity Switches alternative/equivalent to C7, R7 H7, M7 and SV7.
GO™ switch Safety Related Dry Contact Proximity Switches alternative/equivalent to C8, H8 and M8
GO™ switch Safety Related targets alternative/equivalent to target magnets AMS7A and AMS12.
NAMCO™ EA120 Nuclear Radiation Qualified Harsh Environment Proximity Switch Alternative/Equivalent with Accident Conditions (LOCA/HELB), such as EA120-12000 and EA120-11020.
NAMCO™ EA120 Nuclear Harsh Environment Proximity Switch SPDT Alternative/equivalent without accident conditions, such as EA120-51020 and EA120-52000.
NAMCO™ EA-120 (SPDT or DPDT) Nuclear Mild Environment Proximity Switch Alternative/equivalent and target magnet EA120-10001 or EA120-10002. EC590-44020 Quick Disconnect (QDC) connector with plug in cable assy.
GO is a registered trademark of General Equipment and Manufacturing Company, Inc. d/b/a TopWorx. TopWorx is not associated or affiliated with Longvale Ltd in any way, nor has TopWorx Controls sponsored, approved, or otherwise reviewed any products made or sold by Longvale Ltd.
