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Nuclear Grade Cables
for Safety-Critical
Power Plant Systems
Engineered for Class 1E and non-Class 1E applications, these nuclear cables withstand extreme radiation, high temperature, and accident conditions while ensuring long-term operational reliability in nuclear power plants.
- Radiation resistance up to 350 MRad, LOCA-tested
- High-temperature tolerance up to 250°C
- Customizable for reactor containment, turbine island, instrumentation circuits, and balance-of-plant applications
What is a Nuclear Cable?
A nuclear cable is a specialized electrical cable engineered to perform reliably in nuclear power plant environments, including reactor containment, turbine island, and instrumentation & control systems. These cables maintain electrical and mechanical integrity under high radiation (up to 350 MRad), elevated temperatures (up to 200°C), and accident scenarios such as LOCA.
Our nuclear grade cables are designed according to IEEE 323/383, IEC 60332, 60754, 60811, and 10CFR50 standards, ensuring safety-critical system performance and long-term plant operation.
Technical Specifications
Parameter | Range / Capability | Recommended Application |
|---|---|---|
Conductor Type | Copper / Silver-plated copper | Power & instrumentation circuits |
Voltage Rating | 300V – 15kV | Class 1E & Non-Class 1E systems |
Temperature | -40°C to 200°C | High temperature nuclear environments |
Radiation Resistance | Up to 350 MRad | LOCA-tested safety circuits |
Flame Retardancy | IEC 60332-3 | Reactor containment & BOP |
Smoke / Halogen | Low smoke, halogen-free | Safety-critical areas |
Insulation Material | PTFE, FEP, XLPE | Radiation-resistant nuclear cables |
Typical Service Life | 40–60 years | Long-term plant operation |
Our Product
Power Cables
Class 1E & Non-Class 1E
1.Voltage: 300V–15kV, 2.Temperature: -40°C to 200°C, 3.Radiation: up to 350 MRad
UL 10086
The UL 10086 wire features 200 °C fluoropolymer insulation, offering excellent thermal stability, chemical resistance, and long-term durability. Ideal as a core conductor material for high-temperature power cables in nuclear applications, it supports Class 1E and Non-Class 1E designs when integrated into engineered nuclear cable assemblies.
UL 10133
The UL 10133 wire provides high-temperature performance with fluoropolymer insulation, making it suitable as a building block for nuclear-grade power and control cables. Its thermal and chemical resistance ensures reliability in safety-critical circuits in nuclear power plants.
UL 10580
The UL 10580 wire is engineered for extreme temperature environments, with robust fluoropolymer insulation that provides thermal stability, low outgassing, and chemical resistance. It is ideal for nuclear instrumentation and power cables, serving as a reliable core component in high-performance Class 1E and Non-Class 1E cable assemblies.
UL 1180
The UL 1180 wire combines high-temperature fluoropolymer insulation with excellent dielectric properties, making it an ideal choice for custom nuclear power plant cable solutions. Perfect for power, control, and instrumentation circuits, it can be integrated into Class 1E-certified cable assemblies after appropriate nuclear qualification testing.
Control Cables
Safety System Control
1.Signal integrity for I&C circuits, 2.Flame retardant, low smoke, halogen-free, 3.Suitable for safety system control loops
UL 10142
The UL 10142 wire features robust fluoropolymer insulation with excellent thermal stability up to 200–250 °C, ensuring reliable signal integrity for I&C circuits. Ideal for integration into safety system control loops, it is designed to be flame retardant, low smoke, and halogen-free, making it suitable as a core conductor in custom nuclear control cable assemblies.
SAE J1939
The SAE J1939 cable provides shielded twisted pair construction for excellent signal integrity and EMI protection in instrumentation and control (I&C) circuits. Its 250 °C fluoropolymer insulation is flame retardant, low smoke, and halogen-free, making it ideal for safety system control loops in industrial and nuclear environments.
UL 1659
The UL 1659 wire is a high-voltage control cable component with temperature-resistant fluoropolymer insulation, supporting reliable operation in safety-critical control circuits. Its low smoke, halogen-free, and flame retardant properties make it suitable for control loops in nuclear power plant safety systems where thermal and electrical stability are essential.
UL 1726
The UL 1726 series is a multi-conductor fluoropolymer-insulated wire engineered for instrumentation and control (I&C) circuits, ensuring signal integrity and flexible routing in complex safety system control loops. Rated for high temperature operation and flame retardant, low smoke, halogen-free, it serves as a core material for custom nuclear control cable assemblies.
Instrumentation Cables
EMI/RFI Shielded
1.Shielded for EMI/RFI protection, 2.Radiation resistant and LOCA-tested, 3.Data acquisition, monitoring & communication
CASFLON™ 300 TWIN
The CASFLON™ 300 TWIN is a twin-core instrumentation cable designed for EMI/RFI protection in critical control and monitoring systems. Its robust fluoropolymer insulation provides radiation resistance and LOCA compliance, ensuring reliable data acquisition, monitoring, and communication in high-demand industrial and nuclear environments.
CASFLON™ NEMA HP3 Type E
CASFLON™ NEMA HP3 Type E offers full shielding for EMI/RFI protection, making it ideal for safety-critical instrumentation and control circuits. Designed with radiation-resistant fluoropolymer insulation and LOCA-tested performance, it ensures secure and accurate data acquisition, monitoring, and communication in nuclear and high-reliability environments.
CASFLON™ NEMA HP3 Type EE
The CASFLON™ NEMA HP3 Type EE is a high-performance shielded instrumentation cable engineered for EMI/RFI protection in data acquisition and monitoring systems. With radiation-resistant insulation and LOCA-tested reliability, it is suitable for nuclear power plant instrumentation, control loops, and communication circuits.
CASFLON™ NEMA HP3 Type ET
The CASFLON™ NEMA HP3 Type ET provides high-integrity EMI/RFI shielding for instrumentation and control circuits in nuclear and industrial environments. Its radiation-resistant fluoropolymer insulation and LOCA-tested design ensure reliable data acquisition, monitoring, and communication, making it ideal for safety-critical instrumentation applications.
Applications Across Plant Systems
Plant Area | Recommended Cable | Key Specifications |
|---|---|---|
Reactor Containment | Radiation-resistant instrumentation cables | LOCA-tested, Class 1E |
Turbine Island & BOP | Power & control cables | Flame-retardant, low smoke, halogen-free |
Instrumentation & Control | Shielded control & instrumentation cables | EMI/RFI protection, radiation tolerant |
SMR & Legacy Plant Upgrades | Custom assemblies & harnesses | Flexible lengths, small-batch customization |
Technical Performance
Electrical Performance
- Voltage rating: 300V–15kV
- Conductor resistance: ≤ 1.2 Ω/km
- Insulation resistance: ≥ 500 MΩ·km
- Shielding: EMI/RFI protection available
Environmental Performance
- Radiation: up to 350 MRad
- Temperature: -40°C to 200°C
- Flame performance: LOCA certified
- Low smoke / halogen-free
- Moisture & chemical resistance
Compliance & Nuclear Certifications
these standards, ensuring Class 1E compliance and reliable performance in safety-
critical systems. Test reports and certifications are available upon request.
Client Reviews
Tailored Solutions for
Your Nuclear Project
Each nuclear power plant has unique requirements. Our engineering team collaborates to provide:
- Custom conductor and insulation materials
- Adjustable insulation thickness & shielding
- Special jacket materials for harsh environments
- Small batch or project-specific orders
- Full technical consultation for cable selection & system integration
Frequently Asked Questions
A nuclear cable is engineered to maintain performance under radiation, high temperature, and accident conditions in nuclear power plants. Keywords: nuclear cable, nuclear grade cable, LOCA cable
Nuclear cables meet stricter safety, radiation resistance, and LOCA performance standards than industrial cables.
Depending on design and insulation, up to 350 MRad for safety-critical systems.
Yes. We provide custom nuclear cables with tailored insulation, shielding, and conductor configurations.
IEEE 323 / 383, IEC 60332 / 60754 / 60811, 10CFR50 Appendix B, ASME NQA-1
Download detailed datasheets and application guides to match high temperature nuclear cable and LOCA cable requirements.
A Class 1E nuclear cable is designed for safety-related electrical systems in nuclear power plants. These cables must continue to function during and after accident conditions such as Loss of Coolant Accident (LOCA). Class 1E cables are tested according to standards such as IEEE 323 and IEEE 383, ensuring reliability in critical reactor protection systems.
Selecting the correct nuclear cable for reactor environments requires evaluating several factors, including operating temperature, radiation exposure, voltage rating, installation location, and applicable safety standards. Engineers typically choose radiation-resistant nuclear cables with suitable insulation materials such as PTFE, FEP, or XLPE, depending on environmental conditions.
Common insulation materials for nuclear grade cables include PTFE, FEP, ETFE, and cross-linked polyethylene (XLPE). These materials offer excellent radiation resistance, thermal stability, and chemical durability, making them suitable for high temperature nuclear cable applications and long-term nuclear plant operation.
Most nuclear power plant cables are designed for a service life of 40 to 60 years, depending on environmental conditions and installation location. Long-term performance is ensured through aging tests, radiation exposure testing, and LOCA qualification, allowing cables to maintain electrical integrity throughout the plant lifecycle.
