Things to Be Noted When Transmission Line Inspection

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 Transmission line inspection

Line inspection is to regularly grasp the operating status of the line, timely discover defects or hidden dangers in the line body, ancillary facilities and line protection areas, observe, inspect and record the line at close range, and provide the basis for line inspection, maintenance and condition evaluation. (evaluation) and so on provide the basis.

 

According to different needs (or purposes) and the inspection methods adopted, line inspections are divided into the following four types:
◆ Regular inspections
Regular inspections (also called normal inspections) are inspections of lines conducted by dedicated line inspectors on a basically fixed cycle. New (renovated, expanded) lines (sections) should be inspected once a month within 12 months after the line is put into operation. . After the line has been put into operation for 12 months, the inspection cycle is generally once a month. It can be adjusted appropriately according to the specific conditions of the line, such as the division of dangerous points, the division of special sections, seasonal changes, load changes, or to meet special needs. However, In order to discover and grasp changes in the line in a timely manner, the inspection cycle shall not exceed 2 months each time. The inspection scope is the entire line or the jurisdictional maintenance section.
◆Fault inspection
Fault inspection is a line inspection organized by the operating unit to identify line fault points, fault causes and fault conditions. Fault inspection should be organized promptly after a line failure occurs, regardless of whether the restart is successful or not. The inspection personnel are determined by the operating unit according to needs (not just the dedicated line inspectors), and the inspection scope is the section where the fault occurs or the entire line. To make up for the lack of ground patrols, tower inspections must be carried out when necessary.
◆Special inspection
Special inspections are line inspections conducted under special circumstances or according to special needs using special inspection methods. Special inspections include: night inspections, cross inspections, tower inspections, inspections to prevent external damage, and helicopter (or other aircraft) aerial inspections. wait. Special inspections usually should be organized based on line operating status, climate change, path characteristics, natural disasters, external damage, etc. There is no fixed cycle. The personnel involved in special inspections are not limited to dedicated line inspectors. The scope of inspections can be the entire line, specific sections or individual components depending on the circumstances.


◆Supervisory inspections
Supervisory inspections are line inspections conducted by production management personnel at all levels to check the work quality of operating units and dedicated inspectors for assessment, research and other purposes. Supervisory inspections shall be carried out at least three times a year by the production management personnel of the transmission department of the line operating unit; and at least twice a year by line management personnel of the Ministry of Safety and Health and above. The scope of the inspection is not fixed and can be one or more lines, or individual sections can be selected.


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