Duct fiber optic cable
①The optical cable in the hand hole should be protected by a serpentine hose (or soft plastic tube), the optical cable after laying should be close to the wall of the hand hole, and tied to the bracket with a plastic tie or handled according to the design requirements; at the same time, ensure that the optical cable is The trend in the hand hole is smooth and there is no cross-twist phenomenon
②The optical cable is generally reserved for 15 meters in the lead-up well of the base station. If there are more old optical cables reserved in the lead-in well, the reserved optical cable will be reserved in the previous hand well; the straight section is reserved every 500 meters or so 15 meters; 15 meters are reserved for the joint well; 15 meters are reserved for the line passing through the bridge or the sewers; the reserved optical cables are bound and fixed according to the regulations
③In the hand hole, hang an optical cable identification plate about 35CM from the bell mouth of the optical cable; a cable identification plate should also be hung at the reserved place and the joint of the optical cable.
④The pipe optical cable joint box is located in the man (hand) hole, about 20-30 cm away from the wellhead, and the connecting disk surface is level with the ground; the joint box is fixed with expansion bolts; the optical cable reserved ring is fixed on one side of the well wall; the joint box is installed And the position of the remaining cable reel should not affect the placement of other optical cable connectors in the manhole
⑤Bending is not allowed within the 15cm length of the cable outlet tube hole
⑥The laying of the sub-pipes should be laid in three-color or four-color full capacity according to the requirements of various cities. Multiple sub-pipes are arranged in the same color order and the whole path is the same. And put on the plug drum, and put the end cap of the sub-pipe on the empty sub-pipe without laying the optical cable.
⑦ When laying optical cables to pass through obstacles such as railways, highways, rivers, ditches, and other underground pipelines, specific location markings should be made or effective protective measures should be taken, and the location of manholes should be safe.
⑧ Check whether the route and length of the pipeline are consistent with the drawings
⑨ During the inspection and acceptance, it is found that the wells and wells are damaged, the manhole covers are missing, the stakes are not aligned and other problems such as insufficient auxiliary facilities should be raised in the acceptance report or meeting, and a rectification plan should be formulated.
Aerial fiber optic cable
①Check whether the direction of the pole path, the buried position of the pole cable (strut), the height of the pole, the distance between the poles, the type of the cable, the position of the optical cable connector, the position of the remaining optical cable, and the total length of the pole road are in line with the engineering design.
②The optical cable at the pole must have a certain curvature (and be protected by a hose—depending on the design), and the optical cable at the corner pole must be protected by a plastic hose
③The upper and lower parts of the overhead lead should be tied firmly and protected by steel pipes (required above 2.5 meters).
④The place where the overhead optical cable and the power line are crossed and parallel (not meeting the required separation distance of the specification) must be insulated with a three-wire cross protection sleeve.
⑤ When the overhead optical cable crosses the intersection where the vehicle passes, it must be ensured that the crossing height is more than 7 meters, and the safety sign or sign is hung on the suspension line; the short-circuit pole and the cable affect the line and traffic safety, and the reflective sign shall be treated. Conditional construction of poles and piers for protection
⑥The pole road constructed together with the optical cable requires that the poles must not be seriously skewed or marked, and the poles must not be broken or exposed.
⑦The cable should be in a diagonally deep position, and the ground anchor should not be more than 0.5 meters when unearthed.
⑧ The hooks are uniform and do not move, the sag of the hanging wire meets the specification, and the optical cable and the hanging wire do not cross
⑨The optical cable connector is firmly installed, and the remaining binding is neat and beautiful, which meets the design requirements
⑩ Every other pole or according to the design requirements, tie a sign on the optical cable on the pole. The content of the sign is the same as that of the pipeline optical cable. Within 500 meters of entering and leaving the office, tie a sign on the optical cable on each overhead pole.