The work ticket is a written basis for implementing safety technical measures, organizational measures and the safety responsibilities of relevant personnel during equipment and system maintenance operations, and is an important measure to ensure personal safety and equipment safety during maintenance operations. .

Notes on handling work tickets:

1. When working on production equipment and in the production area, you must comply with Huaneng Group's "Electric Safety Operating Procedures" and Huaneng Longkai Hydropower Plant's "Production Site Safety Management Standards", perform work permit and termination procedures, and achieve "four no-starts" and "five no-ends."

2. It is strictly prohibited to use verbal communication to work in the production area, and it is strictly prohibited to work without tickets.

3. The production management information system is used to handle work tickets. In special circumstances, handwritten work tickets in a fixed format can be used, but the signature must be handwritten.

4. To carry out defect treatment, daily maintenance, regular maintenance, installation or testing on electrical equipment, operators need to take power outages on the electrical equipment (power outages include primary power supply, secondary power supply and DC power supply) , electrical isolation, closing grounding switches or hanging grounding wires and other measures to ensure the safety of people and equipment, an electrical work ticket or an outsourced electrical work ticket must be filled in.

5. To carry out defect treatment, daily maintenance, regular maintenance, installation or testing on hydraulic machinery and equipment, operators need to cut off the air, water and oil sources of the machinery and implement safety isolation, To prevent rotation (movement) and other measures to ensure the safety of people and equipment operation, a hydraulic machinery work ticket or an outsourced hydraulic machinery work ticket must be filled in.

6. Any work such as defect treatment, daily maintenance, regular inspection, installation or testing on the equipment under the control of the Central Regulation does not require the operator to take safety measures, and a work ticket must be filled in.

7. When carrying out defect treatment, daily maintenance, regular maintenance, installation or testing on the equipment, the operating personnel do not need to take prescribed safety measures. When operating the excitation system, speed regulator system, For work carried out by the computer monitoring system, work tickets must be filled in for work that may lead to accidental issuance and affect the safe operation of the unit.

8. It is strictly prohibited to use verbal communication to work in the production area. Any work in the production area that does not require a work ticket must fill in the production area work contact form or the production area outsourcing work contact form.

9. When the maintenance work involves hot work, a hot work measure ticket must be attached. When relay protection and automatic control measures are involved, a relay protection and automatic control work measure ticket must be attached.

10. Special operation measures tickets must be attached when welding work involving toxic and harmful gases, oxygen-deficient environments, flammable and explosive containers, and radioactive operations.

11. The measure ticket must be attached to the work ticket, and the measure ticket cannot be processed separately.

12. For accident emergency repairs, use the accident emergency repair order with the permission of the person in charge of the operation duty. However, when the emergency repair time of the accident exceeds eight hours or the night maintenance work extends into the day shift, a work ticket should be issued or reissued.

13. Work tickets must always be kept at the work place and collected by the person in charge of the work.

14. In the same work ticket, the issuer of the work ticket, the person in charge of the work and the person in charge of the work permit shall not serve as each other concurrently. The person in charge of the job can fill in the job ticket.

15. A work leader can only issue one work ticket. The work location listed on the work ticket is limited to one electrical connection. If the equipment belongs to the same voltage, is located on the same floor, is out of power at the same time, and does not touch live conductors, it is allowed to use one work ticket for several electrical connection parts. All safety measures in the work ticket should be completed at once before starting work. 16. If the same type of work is performed on several electrical connection parts in sequence without power outage, an electrical work ticket can be issued.

17. The validity time of the electrical work ticket is limited to the approved maintenance period. If the work ticket has not been completed until the scheduled time, the person in charge of the work should handle the extension procedures. The extension procedure shall be applied by the person in charge of the work to the person in charge of the operation duty. 18. When it is necessary to change the members of the work team, the consent of the person in charge of the work must be obtained. When it is necessary to change the person in charge of the work, the issuer of the work ticket should record the change on the work ticket and notify the person in charge of the operation duty, and the person in charge of the work should reprint the work ticket. If the work tasks are expanded, the work leader must, through the work permitter and with the consent of the person in charge of the operation shift, add work items to the work ticket and record it in the shift handover record. If safety measures need to be changed or added, a new work ticket must be filled in and the work permit procedures must be completed again.

19. Neither the person in charge of the work nor the work permit holder may change the safety measures without authorization, and the operation personnel on duty shall not change the operation wiring method of the maintenance equipment. If there are special circumstances at work that require changes, the other party's consent should be obtained in advance. Changes should be recorded in the shift handover record in a timely manner, indicating the reasons for the change and the content and implementation of the changed safety measures. 20. The person in charge of the work shall strictly implement the work supervision system at work. The person in charge of the work (guardian) must always be at the work site, carefully monitor the safety of the work team members, and promptly correct safety violations.

21. After completing the work ticket approval procedures, the person in charge of the work (guardian) should explain the work content, personnel division of labor, on-site safety measures, live parts and other precautions to the work shift personnel, and inform the dangerous points. The person in charge of the work (guardian) must always be at the work site, carefully monitor the safety of the work crew, and promptly correct safety violations.

22. The person in charge (guardian) of the work can participate in the work shift when there is a total power outage. During a partial power outage, work can only be carried out if safety measures are reliable, personnel are concentrated at one work location, and conductive parts are not accidentally touched. 23. The work ticket displays a red warning when the license status and safety measures are retained. After the safety measures are restored, the person restoring the measures and the person in charge of the operation duty should enter the relevant information in a timely manner to ensure that the safety measures are correct before the equipment is put into operation. Recovery without missing a beat.

24. Strictly implement the work interruption, transfer and termination system during the implementation of work tickets.

25. The numbers of in-factory work tickets and outsourced work tickets are automatically generated by the production management system. Each time a new work ticket is added, a number is added.

26. The invalidated tickets must be stamped with the "voided" stamp and stored in the computer system. They are not allowed to be deleted. The invalidated tickets still occupy the number.