Crane Configuration Solutions for Nuclear Equipment Manufacturing
Cranes for nuclear power equipment manufacturing are configured across four categories: nuclear island, conventional island, BOP, and nuclear fuel. Nuclear island pressure vessels weighing 100–400 t require QD-type cranes with nuclear-grade quality assurance; conventional island steam turbines use QD-type cranes rated 50–200 t; BOP auxiliary equipment is served by LD-type cranes from 10–30 t; and nuclear fuel assemblies demand dedicated cleanroom cranes. A nuclear quality assurance system certification is mandatory.
Nuclear Island: Ultra-Large Tonnage QD-Type Cranes
Reactor pressure vessels weigh 200–400 t, measure 4–6 m in diameter, and stand 12–20 m tall. The recommended solution is a QD-type double-girder crane rated at 100–400 t. Compliance with the nuclear quality assurance code HAF003 is mandatory. Kelude's nuclear-grade QD-type cranes are equipped with dual braking, overspeed protection, overload protection, and seismic monitoring.
After plate bending, reactor pressure vessel shell sections undergo stress-relief annealing in a heat treatment furnace at 620°C. Each shell section weighs 50–150 t, and furnace loading and unloading require a crane fitted with a dedicated extraction fixture. Kelude's nuclear island cranes feature heat-resistant design to ensure safe operation in high-temperature environments.
Conventional Island: Precision Hoisting for Turbine Generators
Turbine rotors weigh 50–150 t and require G1 dynamic balancing. The recommended solution is a QD-type crane rated at 50–200 t. Rotors must be handled with a specialized spreader beam, maintaining levelness within 0.1 mm/m. Kelude cranes come standard with laser-guided positioning assistance.
Blade installation on the low-pressure turbine rotor is a critical assembly step in the conventional island. Blades (titanium alloy or stainless steel) weigh 20–100 kg each, with 20–100 blades per rotor stage. Kelude provides blade-specific lifting spreaders with nylon sheathing to prevent blade damage.
BOP Auxiliary Equipment: Standard Configuration
BOP equipment includes main pumps, emergency diesel generators, and similar items weighing 10–30 t. An LD-type crane rated at 10–30 t with a standard quality assurance system is sufficient.
Emergency diesel generator sets in the BOP section have an assembly weight of 10–30 t. Foundation installation requires base flatness within 0.5 mm/m. Kelude BOP cranes facilitate precise positioning of anchor bolts during installation.
Nuclear Fuel Manufacturing: Class 10,000 Cleanroom Cranes
Nuclear fuel element manufacturing takes place in a Class 10,000 cleanroom environment. The recommended solution is a cleanroom KBK system with stainless steel lifting spreaders and ESD anti-static design.
Fuel rods (zirconium alloy cladding) used in nuclear fuel assembly measure 4–5 m in length with a wall thickness of 0.6–0.8 mm. Hoisting must not cause bending or scratching, which is why Kelude's nuclear fuel KBK system uses specially designed soft vacuum suction lifters.
Nuclear Island QD Type100-400t Nuclear Class | Conventional Island QD Type50-200t | BOP LD Type10-30t |
Nuclear Fuel Clean KBK | Nuclear Classconfiguration Dual Brake+earthquake | investment 100-50010K+ |
Crane Configuration Table for Nuclear Power Applications
| Category | Model | tonnage | warranty | configuration | investment |
|---|---|---|---|---|---|
| Nuclear Island | QDExtra Large | 100-400t | Nuclear Class HAF003 | Dual Brake+earthquake | 100-50010K |
| Conventional Island | QD Type | 50-200t | Nuclear Class | Laser Positioning | 50-20010K |
| BOP | LD Type | 10-30t | Conventional | Conventional | 15-4010K |
| Nuclear Fuel | Clean KBK | 1-5t | Class 10K | ESD+Stainless Steel | 10-3010K |
Kelude Heavy Industry has the manufacturing capability for cranes used in nuclear power plants. This includes ultra-large-tonnage QD Type cranes rated at 100–400t for the nuclear island, precision rotor hoisting for G1-class conventional island applications, and Class 10,000 cleanroom KBK systems for the nuclear fuel handling area.
Nuclear Island Extra Large QD Type100-400t+Nuclear Class HAF003 | Precision Hoisting G1Classrotor+Laser Positioning | Clean Solution Class 10KKBK+Stainless Steel+ESD |
FAQ: Nuclear Crane Certification & Performance
Q: What certifications are required for nuclear island cranes?
A: Nuclear island cranes must hold HAF003 nuclear quality assurance system certification and an ASME nuclear manufacturing license. Kelude has obtained the Civil Nuclear Safety Equipment Manufacturing License, with the entire design, manufacturing, and testing process witnessed by the nuclear safety authority.
Q: What are the lifting accuracy requirements for heavy nuclear turbine rotors?
A: Nuclear turbine rotors require dynamic balancing to G1 grade (eccentricity ≤ 1 μm/kg) and a lifting levelness of ≤ 0.1 mm/m. Kelude's nuclear rotor lifting spreaders are equipped with redundant sensors for online monitoring.
Q: What cleanliness class is required for nuclear fuel handling workshops?
A: ISO Class 7 (10,000) cleanroom level. Cranes feature stainless steel construction, sealed electrical enclosures, and HEPA filtration. Kelude offers dedicated crane solutions for nuclear fuel cleanroom operations.
Q: What is the typical design and manufacturing lead time for nuclear cranes?
A: The full cycle (design, manufacturing, testing, and certification) for 100–400 t nuclear island cranes typically takes 12–18 months. Kelude also provides nuclear-grade engineering consulting services.
