(2) Before the operation, be sure to check the cable name in detail, and whether its signboard is consistent with that written on the operation ticket, especially when multiple cables are laid together, it is necessary to distinguish which one is the maintenance cable.
(3) Cable maintenance work, whether it is moving position, dismantling and reassembling, replacing connector or cable terminal head, must be carried out under power failure. Due to the particularity of cables, in addition to general safety measures. Before operation, if there is no electricity, treat it as electricity.
(4) The operation of excavating cables or junction boxes must be carried out step by step according to the sign piles from the beginning, and metal tools shall not be used for forced excavation, so as not to damage its steel armor or insulation.
(5) For the dug cable or junction box, when the operation needs to be hollowed out below it, it must be hung for protection; Suspension cables shall be installed every1.0-1.5m.
Hang it slightly to ensure that its bending radius is within the allowable range. The minimum allowable bending radius of the cable is shown in the table. The hanging connector box must be placed flat and firm, and the connector shall not be pulled. When moving the cable junction box, it should generally be carried out without electricity; If live moving is required, it should be moved horizontally and slowly to prevent explosion or electric shock caused by insulation damage.
6) Before sawing the cable, it must be verified with the cable list and cable laying plan, and the instrument can be verified without electricity. The switch on the power transmission side must be hung with warning signs and locked. When necessary, there should be a special person to guard the cable. The saw blade should be reliably grounded and have an insulated handle. Operators should wear insulating gloves, stand on insulating mats and wear goggles when necessary.
7) Wear insulating gloves and boots when repairing cable head or cable joint.
(8) When making epoxy cable head and preparing epoxy resin, anti-virus and fire prevention measures should be taken. When making on the pole, there should be measures to prevent falling.
9) When entering the cable tunnel or manhole for maintenance, the polluted gas in the well should be removed first, and ventilation equipment should be used when necessary.
(10) Records cannot be used as an absolute basis when judging whether cables have electricity or not and judging their specifications and models. The actual quantity must be measured.
1 1) When the running cable has obvious trauma, the operator shall not touch the injured part, and shall apply for power failure when handling. Before the formal power failure, it is not allowed to saw the steel armor or seal the lead skin with a blowtorch.
(12) Cable leakage detector should be equipped during cable maintenance to accurately judge whether the cable is charged.
(13) After the cable is overhauled, it must pass the test before it can be put into operation. Before and after the test, the electricity must be checked and discharged.
(14) Guarantee of cable trench and cable tunnel after maintenance to prevent flooding.