GB 26859-2011Safety code of electric power industry - Electric lines (English PDF)

4.1 Staff

4.1.1 physician identified, without prejudice to working condition (medical examination at least once every two years).

4.1.2 have the necessary safety knowledge and skills of personnel engaged in electrical work should have a shock first aid rescue method.

4.1.3 have the necessary electrical knowledge and business skills, familiar with the electrical equipment and systems.

4.2 Job site

4.2.1 job site production conditions, safety, work tools and safety equipment shall comply with the national standards or industry requirements, Safety equipment and labor protection products before use should be qualified available.

4.2.2 appropriate breaks and construction vehicles often working on someone with first aid kits, first aid supplies store, and designate a person check, supplement or replace.

4.3 Job measures

4.3.1 should work to ensure the safety of the system measures the electrical circuit (hereinafter referred to as "line") and power distribution equipment, may include job applications, Work arrangement, site investigation, a written security requirements, work permit, work monitoring, and intermittent work and end work program.

4.3.2 All power failure or partial power outage work on line and power distribution equipment, the equipment operation and maintenance unit shall make an application outage, Required by the scheduling of competent jurisdiction to apply in advance outage scheduling mechanism, arrangements for maintenance work only after consent.

4.3.3 repair work should be carried out before the work is arranged, clear place of work, tasks, responsible person, work environment, work programs and books Surface safety requirements, division of tasks and working class members.

4.4 Other Requirements

4.4.1 Staff should be informed of their risk factors and preventive measures exist job site.

4.4.2 found directly endanger the safety of emergency, the scene shall have the authority to stop work and to organize the evacuation job site.

4.4.3 before the field work, field work should be prepared in accordance with the characteristics of job preparation, work environment dangerous point for investigation, and to guard against Measures.

4.4.4 Distribution system switching stations, high-voltage power distribution stations (the) working can refer to GB 26860-2011 "electrical safety work order issued The relevant provisions of the electrical part of power plants and substations, "the execution.

5.1 General Requirements

5.1.1 Safety Measures Organization as one of the measures to ensure the safety of the system, including job tickets, work permits, monitoring, and termination and other discontinuities. Job ticket issuer, who is responsible for the work (guardian), work permits who dedicated guardians and members of the working class throughout the workflow should perform Their security responsibilities.

5.1.2 job ticket is one written permission of the security requirements on line and power distribution equipment to operate, may contain numbers, place of work, work within Yung, plan working hours, work permit time, the end of the work time, the scope of power and safety measures, and work ticket issuer, work permit Person in charge of the work and working class members and so on.

5.1.3 In addition to working with the ticket Required fields work, the other may be given orally or by telephone command mode.

5.2 Site survey

5.2.1 ticket issuer or person in charge of the work, site survey line jobs, jobs, organizational units should live according to task INVESTIGATION.

5.2.2 The site investigation should look at on-site maintenance within the (construction) work scope Facilities, field operating conditions, the environment, power equipment, security Stay or adjacent live parts and the like.

5.2.3 according to the site survey results, the greater the risk, complexity and degree of difficulty operating the project, should formulate organizational measures, technical measures And security measures.

5.3 Job Ticket types

5.3.1 require lines or power distribution equipment all or part of the work of a power outage, power lines filled with a first work sheet (see Appendix A).

Note. All power distribution equipment refers to the supply of the power distribution equipment on all power lines have all been disconnected. Workers on the line towers

5.3.2 Charged with live wires in accordance with Table 1 minimum safety distance specified operating and running distribution equipment For, filled with a second power line work sheet (see Appendix B). Table

1 Work and live wire minimum safety distance on live line tower Voltage level kV safe distance 10 and below 0.7 20,35 1.0 66,110 1.5 220 3.0 330 4.0 500 5.0 750 8.0 1000 9.5 ± 50 1.5 ± 500 6.8 ± 660 9.0 ± 800

5.6 Work Permit

5.6.1 power lines filled with a first job ticket work, responsible person should get a full license to the licensor's work before beginning jobs.

5.6.2 power line filled with a second job ticket, it does not perform work permits.

5.6.3 live working responsible person in charge before work begins, the unit should maintain or duty dispatcher and equipment operation and performance of contact Related permits. After the charging operation should be promptly reported.

5.6.4 Licensing of the following commands can be used by.

a) calls issued;

b) personally issued;

c) sent delivered.

5.6.5 After the work permit shall in all respects to the power lines may all wind up power, good ground wire installation, repair power lines may only issue Licensing work order.

5.6.6 should not be about time to stop power transmission.

5.7 Working guardianship

5.7.1 Work Permit, responsible person, dedicated members account guardian should work shift work content and on-site security measures. Provided good After the on-site ground, working class members to fulfill confirmation procedures before beginning work.

5.7.2 responsible person, dedicated guardian should always be at the job site, the work of the members of the class monitor. When power lines work, workload The person in charge in the working class members are free from electric shock and other dangerous situations, you may participate in the work together.

5.7.3 work ticket issuer or the responsible person should be based on security conditions in the field, the scope of work, work needs and other specific circumstances, additional special Guardians and responsible for determining custody staff.

5.8 Intermittent work

5.8.1 When inclement weather conditions or other threats to the safety of staff at work, responsible person or dedicated guardian under Make temporary stops working.

5.8.2 When work stopped, all the ground work stations can remain unchanged. If the working class need to temporarily leave the workplace, should be taken to safety Measures. Before resuming work, you should check the integrity of safety measures ground lines.

5.8.3 filled with a valid power line a first job ticket within a few days, when the daily workplace knock If the installation of ground wire removed, times Day before restoration work should be re-examine the electrical grounding.

5.9 End of work and restore power

5.9.1 Upon completion, the responsible person should check the status line maintenance area, confirm towers, conductors, insulators and other auxiliary equipment on string Personal security lines no legacy, tools, materials, etc., confirm that all the staff removed from the tower, and then ordered the demolition work area loaded The ground wire is provided. After removal of the grounding line, should not board the lever work.

5.9.2 After the end of the work, responsible person who shall report to work permits, reports as follows:

a) report in person;

5.9.3 The report should include the end of the work responsible person's name, the name and the completion of the line segment, the device changes the situation and work instructions The location for the installation of ground wire and personal security lines have been removed, this is no longer the team of staff and remnants on the line, it can send electricity.

5.9.4 Upon receipt of work permits people responsible for all the work the work of the end of the report, and confirm that all work has been completed, all staff have been The withdrawal from the line, the ground lines have all been removed, after verification, ordered the demolition of each side before security measures to restore power transmission.

6.1 General Requirements

6.1.1 works on lines and distribution equipment, there should be power outages, electrical inspection, installation of ground wire and personal security lines, and the installation of cover bar hanging nameplate (Fencing) and other technical measures to ensure the safety. Insulation

6.1.2 Work safety equipment used should meet the requirements of Appendix E.

6.2 Blackout

6.2.1 power lines before work, take the following measures.

a) Disconnect the power plant, variable (with) power plant circuit breakers and disconnectors;

b) Disconnect the end of each working line (including branches) circuit breakers, disconnectors and fuse;

c) Disconnect the power lines endanger jobs, and can not be cross-cutting measures taken in parallel with the tower and line circuit breakers, disconnectors And fuses;

d) Disconnect the power transmission possible anti-low-voltage power circuit breakers, disconnectors and fuses. Each end of the device

6.2.2 power should be obvious break point, or should be able to reflect other electrical and mechanical equipment operating status indication and should not be in Only by working off the circuit breaker on the power supply equipment.

6.2.3 operating mechanism or power equipment parts, should take the following measures.

a) can be directly in the ground operation of the circuit breaker, isolating switch operating mechanism should be locked;

b) the circuit breaker can not be operated directly on the ground, isolation switch should be in the operating parts of the suspension nameplate;

c) Drop-out fuse fuse tube should be off or on the operating parts of the suspension nameplate.

6.3 Electrical test

6.3.1 on the line prior to the installation of ground wire, grounding should verify that the site is indeed no line voltage.

6.3.2 Direct should use the appropriate electrical inspection electroscope by voltage level at the ground of the equipment phase (line-by-pole DC) electrical inspection. Electrical inspection before, Electroscope should be confirmed in an electrical equipment electroscope good. HVDC lines and 330kV and above the AC line can be used with metal Insulation rod or a dedicated portion of the insulating rope gradually contact wires, according to whether the discharge sound and spark electrical inspection method to determine whether the power line, Electrical inspection should wear insulated gloves.

6.3.3 When bad weather conditions, outdoor power distribution equipment and other electrical equipment can not directly test, it can be indirect electrical inspection.

6.3.4 tower erected on the same multi-layered, multi - lines on the same crossarm electrical inspection should be a priori low pressure, posterior high pressure, a priori lower posterior upper layer, Prior proximal, distal posterior.

6.3.5 line contact with the circuit breaker, disconnecting switch or a combination thereof when maintenance, electrical inspection should be separately on both sides.

6.3.6 When the inspection body with the power from the electrical inspection equipment shall comply with the safety distance requirements in Table 1.

6.4 Installation of ground wire, personal security lines

6.4.1 installation of ground wire should not be a single person.

6.4.2 the body should not touch ungrounded conductor.

6.4.3 clear line experience no voltage, should immediately furnish ground wire and three-phase short circuit. Before grounding cable should gradually phase fully discharge.

6.4.4 equipment, demolition ground conductor terminal shall be insulated rod or special insulation rope, the body should not touch the ground.

6.4.5 do not apply the method of winding to ground or shorted.

6.4.6 Complete grounding wire should have a transparent sheath of multi-strand copper wire and special clamp components. Grounding line section not less than 25mm2, and Installation location should meet the requirements of the short-circuit current.

6.4.7 When installation of ground wire, personal security lines, you should install a ground terminal, installed after the end of the wire. Remove ground wire of the order to the contrary.

6.4.8 ground or personal security lines should be good contact, reliable connection.

6.4.9 When installed in a tower or ground wire cross arm grounded in good condition, the ground wire can be used alone or connected to the tower after the merger.

6.4.10 When no grounding deflectors tower installed ground wire, can be temporary grounding. Cross-sectional area of not less than the temporary grounding 190mm2. Temporary grounding depth of not less than 0.6m. High soil resistivity areas should take measures to improve the grounding resistance.

6.4.11 power lines operating furnish ground wire shall comply with the following provisions.

a) at each end of the work area and the possible power transmission line to the branch line maintenance work area shall be provided with ground wire;

b) DC grounding line, the operating point should be installed at both ends of the ground line;

c) power lines with a ground wire can be installed only in the vicinity of the workplace.

10.1

Note 1. The table listed voltage level by a high-speed voltage levels safe distance.

Note 2. 750kV 2000m altitude data is corrected by the other level data is corrected according to an altitude of 1000m.

5.3.3 live or work with live equipment is less than the distance specified in Table 1, but are not safe distance from power by charging work practices undertaken fill Charged with the job work sheet (see Appendix C).

5.3.4 accident emergency repair work using a single emergency repairs (see Appendix D) or job ticket. Accident repair work should be carried out using non-continuous Work sheet.

5.4 work filled with votes

5.4.1 work should use a unified ticket coupon format.

5.4.2 a line, with a portion of the electrical connection with a few lines or stop transmission tower erection and simultaneously work on a few lines of electricity, It can be filled with a power line a first job ticket.

Note. electrical connections with a part of the device means that several electric unit electrically connected to each other.

5.4.3 of the same voltage level, the same type of work without power several lines can be filled with a second power line work sheet.

5.4.4 of the same voltage level, the same type of job to take charge of security measures on the same number of lines in turn, can be filled with a power Live line work job ticket.

5.4.5 Maintenance work ticket by the device or operating unit issued by a unit of the device operation and maintenance after passing the examination and approval of the issuance of additional units. On contract projects, work tickets can be issued in the form of both sides to implement.

5.4.6 pay a working ticket responsible person, another post job ticket issuer or person work permit.

5.4.7 a responsible person should work simultaneously perform two or more votes.

5.4.8 holding work ticket line to enter the substation (including power plants booster station and converter station, hereinafter the same) of overhead lines, cables, etc., should be Substation get a work permit only after the permission to work.