Nuclear Power Plant Crane Selection: Reactor, Fuel & Waste Areas
In short: Kelude Heavy Industry supplies crane configuration solutions for nuclear power plants covering four key areas — the nuclear island, conventional island, fuel handling, and waste processing — with lifting capacities of 5–360t (nuclear island polar crane), 10–180t (conventional island), 3–30t (fuel area), and 5–20t (waste area). Total crane equipment investment for a complete plant ranges from approximately $740,000 to $7.4 million. The nuclear island uses a polar crane (360t main hook + 50t auxiliary hook, designed for seismic and LOCA conditions), the conventional island is equipped with QD-type double-girder overhead cranes (50–180t), the fuel area uses stainless steel anti-corrosion cranes with foreign-object exclusion design, and the waste area is fitted with easy-decontamination cranes — all engineered to meet the extreme safety requirements of a 60-year design life.
Nuclear Power Plant Crane Configuration Solutions
Nuclear Island | Conventional Island | Fuel Handling | Waste Processing
Nuclear power plant cranes represent the highest safety classification in the lifting equipment industry. From the reactor building on the nuclear island to the fuel handling area, every crane must satisfy stringent requirements including radiation resistance, seismic resilience, and redundant safety braking systems. Kelude Heavy Industry holds full design and manufacturing qualifications for nuclear-grade cranes and is an approved supplier to both CNNC and CGNPC, with product coverage spanning all lifting requirements across the entire nuclear facility.
Scenario 1 — Nuclear Island
• Lifting capacity 100t–360t, nuclear-grade overhead crane
• Radiation resistance / seismic classification NF
• Safety level LS/QS
• Nuclear quality assurance system NQA/M
• Dual-crane lifting with synchronized correction
• Kelude Heavy Industry holds nuclear QA system certification
Radiation & Seismic Resistant | Nuclear Safety Rated | Dual-Crane Lifting
Scenario 2 — Conventional Island
• Lifting capacity 50t–200t, QD-type overhead crane
• Work duty A5 to A7
• Variable frequency speed control / inching control
• Optional twin trolley configuration
• Precision installation / heavy component turnover
• Kelude Heavy Industry supplies redundant braking systems
Large Tonnage 50–200t | VFD Inching | Redundant Braking
Scenario 3 — Fuel Handling Area
• Lifting capacity 1t–15t, dedicated fuel handling crane
• Positioning accuracy ≤2mm
• Anti-drop protection / dual-stage braking
• Underwater operation / extended handling tools
• Video monitoring + remote control
• Kelude Heavy Industry provides radiation-resistant motor and cable solutions
Precision Positioning ≤2mm | Anti-Drop | Remote Control
Scenario 4 — Waste Processing Area
• Lifting capacity 3t–20t, radiation-shielded remote-controlled crane
• Fully enclosed / leak-proof design
• Remote control operation
• Corrosion-resistant / easy-decontamination surface
• Redundant safety braking system
• Kelude Heavy Industry stainless steel + special coating solution
Radiation protection | Remote control | Easy-decontamination surface
Selection Parameters: Four-Zone Comparison
| Parameter Item | Nuclear Island Area | Conventional Island | Fuel Handling Area | Waste Treatment Area |
|---|---|---|---|---|
| recommended model | nuclear power Dedicatedoverhead type | QD type overhead crane | Dedicated Fuel Handling Crane | Radiation-Protectedremote control Dedicated Fuel Handling Crane |
| lifting capacity range | 100t~360t | 50t~200t | 1t~15t | 3t~20t |
| safety level | LS/QSGrade | Standard Industrial Grade | Nuclear Safety-Related | Radiation-Protected Grade |
| special requirements | radiation resistance/seismic resistance | precision installation | Positioning≤2mm | Leak-Proof/remote control |
| control mode | Operator Cabin+Remote-Operated | Operator Cabin+remote control | remote control | Remote-Operatedremote control |
| Crud Advantage | nuclear powerwarranty Certification | redundancybraking system | radiation resistance Motor/Cable | Stainless Steel+Special Coating |
Reactor Building Cranes: The Highest Nuclear Safety Classification
Reactor building cranes — also known as polar cranes — are the most safety-critical lifting equipment in a nuclear power plant. They must meet stringent nuclear-specific requirements including radiation resistance, Seismic Category NF compliance, jam-proof operation, and redundant braking. Kelude's nuclear-grade overhead cranes feature dual brake redundancy, radiation-resistant motors and specialty cables, and seismic design validated for SL-2 earthquake conditions. The quality assurance system follows NQA/M nuclear QA standards. With lifting capacities from 100 t to 360 t, these cranes handle critical lifts such as reactor pressure vessel head removal and steam generator replacement.
Conventional Island & Fuel Handling Crane Configurations
In the turbine hall of the conventional island, QD-type double-girder bridge cranes are commonly used, but with added redundant braking and jam-proof design features. The fuel handling area demands the highest positioning accuracy of any crane application — fuel assembly positioning must be held to ≤2 mm — requiring a dedicated fuel-handling crane with a secondary anti-drop braking system. Kelude equips these fuel cranes with radiation-resistant motors, extended handling tools, and underwater operation capability to support fuel assembly transfer within the spent fuel pool.
Radiation-Shielded Remote Cranes for Waste Handling & Lifecycle Support
Cranes in the waste processing area must be operated remotely in high-radiation environments. Fully enclosed leak-proof design and easy-to-decontaminate surface treatment are baseline requirements. Kelude's radiation-shielded remote cranes feature a fully sealed structure, stainless steel with a special radiation-resistant coating, and a remote video control system that allows operators to complete all lifting operations safely from outside the shielded area. Kelude provides full lifecycle operation and maintenance services for nuclear plants, including periodic inspection, spare parts supply, and radiation-aging detection.
Kelude: Nuclear Power Plant Crane Service Advantages
Kelude Heavy Industry is a specialized manufacturer of nuclear power plant cranes, holding a civil nuclear safety equipment manufacturing license (HAF604). All products pass design and manufacturing review by the nuclear safety authority, covering the full range of polar cranes for the reactor building and overhead cranes for the conventional island in 1,000 MW-class PWR plants. To date, Kelude has supplied lifting equipment to six nuclear power bases in China.
FAQ
Q: What seismic design grade is required for nuclear power plant cranes?
A: Nuclear power plant cranes must meet NF-grade seismic design requirements (Safe Shutdown Earthquake, SSE), maintaining structural integrity and functional availability under SL-2 seismic conditions. Kelude performs seismic verification on all load-bearing components using finite element analysis and equips cranes with anti-derailment stops and rope-retention devices to prevent derailment or falling during an earthquake.
Q: Why do reactor building cranes require redundant braking?
A: Reactor building cranes handle high-value nuclear safety equipment such as reactor pressure vessel heads and steam generators, where any drop incident could lead to a nuclear leak. The redundant braking system automatically engages the secondary brake if the primary brake fails. Each Kelude nuclear brake set can independently support 1.5 times the rated load, and when both brakes engage simultaneously, braking distance is reduced by more than 50%.
Q: How is positioning accuracy ensured for the fuel handling crane?
A: Fuel handling crane positioning accuracy is achieved through Variable Frequency Speed Control combined with encoder-based closed-loop control — both the crane bridge and trolley are equipped with incremental encoders that provide real-time position feedback to the PLC-based full closed-loop control system. Kelude fuel handling cranes achieve positioning accuracy of ±1.5mm under load, with laser distance measurement providing redundant verification to prevent encoder error accumulation.
Q: Why do waste handling area cranes require easy-decontamination design?
A: The nuclear waste handling area is subject to potential radioactive dust or liquid spills that can contaminate equipment surfaces. Kelude uses a fully enclosed structure with a Stainless Steel body and Teflon coating, achieving a surface roughness of Ra≤0.8μm that can be wiped clean with standard decontamination agents. All Weld Seams are ground smooth to eliminate dead corners, and the electrical cabinet is IP65-sealed to prevent any accumulation of radioactive material.
