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Pressurizer of Lufeng Nuclear Power Unit 1 Successfully Hoisted into Place

On September 30, the pressurizer of Lufeng Nuclear Power Unit 1, constructed by China Nuclear Industry 23 Construction Co., Ltd., was successfully hoisted into place. The success of this hoisting marks major progress in the installation of the primary circuit main equipment in the nuclear island of Lufeng Nuclear Power Unit 1, laying a solid foundation for the subsequent surge line welding, system equipment installation, and commissioning work. The pressurizer is a core main equipment of the nuclear island reactor coolant system and a Class 1 nuclear safety equipment. It undertakes the tasks of pressure regulation and overpressure protection for the primary circuit system and is key equipment for ensuring the safe and stable operation of the reactor. This equipment is a vertical cylindrical pressure vessel with a body height of more than ten meters and a total hoisting weight of over one hundred tons. It is installed in the pressurizer compartment of the CA01 module, with stringent design and manufacturing standards...

2026-09-30

The pressurizer of Unit 3 of the Zhangzhou Nuclear Power Plant has been hoisted into place.

At 19:03 on September 20, the pressurizer of Unit 3 of the Zhangzhou Nuclear Power Plant was hoisted into place. During this pressurizer hoisting operation, the pressurizer was horizontally lifted to the +16.5m platform by a gantry crane, transported and towed by a heavy-duty vehicle into the reactor building, then turned and erected by the polar crane, and finally hoisted into place. The pressurizer is one of the core main equipment items of the nuclear island reactor coolant system, and its main function is to undertake primary loop pressure control and overpressure protection, among other duties. When the temperature and pressure inside the reactor fluctuate, the pressurizer can maintain the temperature and pressure inside the reactor within a safe range by adjusting the flow rate and temperature of the coolant water, thereby ensuring the safe and stable operation of the reactor. At the same time, the pressurizer is crucial for ensuring the power generation efficiency of the unit and maintaining stable operation, and is key equipment for the safe operation of nuclear power units.

2026-09-21

Pressurizer of Zhangzhou Nuclear Power Unit 3 Hoisted into Place

At 19:03 on September 20, the pressurizer of Zhangzhou Nuclear Power Unit 3 was hoisted into place. During this pressurizer hoisting operation, the pressurizer was horizontally lifted to the +16.5m platform by a gantry crane, transported by a heavy-duty vehicle into the reactor building, then turned and erected by the polar crane, and finally hoisted into place. The pressurizer is one of the core main equipment items of the nuclear island reactor coolant system, and its main functions include primary loop pressure control and overpressure protection. When the temperature and pressure inside the reactor fluctuate, the pressurizer can maintain the temperature and pressure within the reactor in a safe range by adjusting the flow rate and temperature of the coolant water, ensuring the safe and stable operation of the reactor. At the same time, the pressurizer is...

2026-09-21

Zhejiang Jinqimen Nuclear Power Unit 1 Pressurizer Relief Tank Successfully Hoisted into Place

On August 30, the pressurizer relief tank, a major nuclear island equipment item of Unit 1 at Zhejiang Jinqimen Nuclear Power Plant, contracted by China Nuclear Industry Fifth Construction Co., Ltd. (CNF), was successfully hoisted into place. The entire hoisting process was smooth and orderly, with overall safety and quality under control. This hoisting has laid a solid foundation for the subsequent installation of main nuclear island equipment and the construction of the primary loop system. The pressurizer relief tank is an important auxiliary equipment of the reactor coolant system in a nuclear power plant. Its main function is to collect and condense the high-temperature and high-pressure steam discharged from the pressurizer safety valves, ensuring the safe and stable operation of the reactor system. The relief tank hoisted this time is pre-installed equipment in the nuclear island. The main body of the equipment is heavy in weight and large in size, with limited hoisting workspace. After being hoisted into place, it needs to be placed in the nuclear island building for a long period, and subsequent construction will be constrained by space, making it necessary to introduce the equipment precisely within the civil construction window period.

2026-09-02

Hualong One Pressurizer Electric Heaters Achieve Coverage of Two Major Technical Routes

The pressurizer electric heater is an important safety-class component of the reactor coolant system (primary loop) in pressurized water reactor nuclear power plants, directly affecting unit pressure regulation and safe, stable operation. The localized pressurizer electric heater developed by Chuanyi Instrument Co., Ltd., a subsidiary of SINOMACH Instrumentation Group under SINOMACH Group, has been applied to China's self-developed Generation III nuclear power units such as "Hualong One." The photo shows the qualification prototype of the Hualong One pressurizer electric heater. With the batch construction of Hualong One units advancing, units adopting different technical routes have imposed new customized operating condition requirements on pressurizer electric heaters. In October 2019, Chuanyi Instrument, together with China General Nuclear Power Engineering Co., Ltd., initiated the development of the CGN-version Hualong One pressurizer electric heater...

2026-08-27