Recently, the Level C maintenance for Unit #1 has fully commenced. This Level C maintenance is scheduled to last 18 days, with a total of 403 standard maintenance items and 2 special projects planned. Entering the maintenance site, the maintenance team operates in unison, with standardized fencing marking the work areas. Employees from various maintenance departments demonstrate their sense of responsibility through their actions, fully committing to their tasks, creating a magnificent maintenance “spring plowing” scene for Unit #1.
Follow the Lens to See the Maintenance
At the Level C maintenance site for Unit #1
Each resolute figure
Each focused face
Each busy scene
Forms the most captivating landscape of maintenance
These moments captured by the lens
Are the actions of the power maintenance personnel demonstrating their responsibility
Practicing professionalism and commitment
Let us follow the lens
To get closer to these admirable and respectable power maintenance workers
Feel the perseverance and strength of the maintenance personnel from each team
Maintenance Department Boiler Team members Wang Fei and Guo Qingxin checking the oil pump of the 1A induced draft fan
Maintenance Department Electrical Team conducting DC withstand voltage tests on the stator windings of the 1st generator
Maintenance Department Electrical Team repairing the excitation small gap demagnetization switch of the 1st generator
Maintenance Department Electrical Team repairing the neutral grounding resistance cabinet of the high plant transformer
Maintenance Department Electrical Team conducting no-load tests on the PT at the generator outlet
Pre-checking the internal inspection of the desulfurization limestone slurry tank
Maintenance Department Electrical Team checking the submersible pump #3 of the main transformer
Maintenance Department Electrical Team wiring the circulating oil pump motor of the induced draft fan
Maintenance Department Relay Protection Team conducting protection verification for the generator-transformer set
Maintenance Department Relay Protection Team verifying the rotor grounding protection device
Maintenance Department Thermal Engineering Team managing the aging of cable insulation at turbine shaft measurement points
Maintenance Department Thermal Engineering Team optimizing DCS logic for Unit #1
Maintenance Department Turbine Team member Ding Yun repairing the sealing oil differential pressure valve
Maintenance Department Turbine Team member Li Chunyang repairing the sealing oil pump
Maintenance Department member Liu Xin checking the quality inspection points of the cold water system repair work instruction
Maintenance Department Turbine Team member Zhang Wenlong checking the copper sleeve of the accident drainage valve
Power Generation Department Maintenance Operation Group member Li Jinzhe conducting electric door drive experiments
Power Generation Department Maintenance Operation Group members Wang Yan and Li Jinzhe
Implementing isolation safety measures for the condensate pump maintenance
Power Generation Department Maintenance Isolation Group utilizing spare time for training
Operational principles of the sealing oil system for Unit #1
This Level C maintenance adheres to the principles of “standardized operations yield results, refined management improves levels, and mandatory training enhances skills”, strictly following the “node progress combat map” to advance all tasks, clarifying maintenance safety processes, quality requirements, and acceptance standards. Through the deployment of cameras, safety inspections by personnel, and owner representation, we ensure that the entire maintenance process is safe and controllable.
The current maintenance work for Unit #1 has entered the comprehensive reinstallation phase. The Power Generation Department Maintenance Isolation Group, along with various maintenance teams and participating units, actively implements standardized management requirements for maintenance safety, strictly adhering to regulations and maintenance operation procedures. They effectively manage maintenance risk identification, safety control for confined space operations, and personnel safety protection, aiming for “zero violations, zero accidents, and zero delays”, integrating the concept of standardized on-site operations and high-quality civilized maintenance throughout the process. They strictly follow the daily maintenance plan and project timelines, focusing on safety and civilized site management to ensure that maintenance projects progress according to plan, achieving the goal of “safely controlled and high-quality” throughout the maintenance process.
The stars do not ask about the traveler, and time does not disappoint those who work hard. All employees of the company will earnestly practice the work requirements of “high standards, meticulousness, practicality, speed, and specialization”, using the sword of diligence and rigor to cut through the thorns on the path of Level C maintenance, and win the tough battle of Level C maintenance for Unit #1.
Author: Maintenance Teams
Editor: Xie Jinghua
Proofreader: Peng Na
Reviewer: Tian Yuxiang
(2025 Issue 65)
