1) When there are multiple new fiber optic cables of the same specification and type at the same cutover site, if the two ends of each fiber optic cable are not marked with the same color and are in the same pipe hole, it is very easy to make mistakes during cutover.
2) The old optical cable to be cut is usually marked with red tape to mark the reserved end, but after the old optical cable is pulled out of the manhole, is it the left end or the right end of the saw red tape when cutting? It is very easy to make mistakes. In fact, blue tape should be used to mark the discarded end. When cutting, cut off between the red tape and the blue tape and keep the red end so that there is no mistake.
3) In the same old optical cable to be cut, because there are multiple splice boxes and various types of optical cables, and the splice boxes are not opened before the cut and the fiber is recorded and recorded, the wrong fiber is inevitable during cutover. .
4) In the optical cable cutover of the city line, since the optical cables in different directions all go through the same pipe, it is easy to get the direction wrong during the cutover.
5) In the safety management of on-site cutover, a little carelessness will lead to safety accidents. If you enter the manhole without proper ventilation, use an open flame in the manhole, no warning signs around the manhole, no warning signs when pumping water, refuel the oil machine while smoking, work on the pole without checking with a test pen , start the cable opening without the review and approval of the person in charge of the cutover point, etc.
The cutover can only be done at night. When the temperature is close to 0 degrees outdoors, the face, hands, and ears are all red from the cold, but the work in hand cannot be stopped for a moment. It takes several hours from preparation to completion.
Every cutover is like going to the battlefield, the atmosphere is tense and orderly.
