Advice Needed on 864ct Butt Splice

What’s up guys. I need some advice on testing/re-burning this span of 864ct butt splices I have. There are a total of (9) splice cases. Total span is 46,707ft / 14.236km. This job was expedited by the ISP due to poor management at the top level. As a result, we were not able to install the cabling in sequential order. Therefore, we were not able to test through all of our splices one at a time. The job is pulled and spliced and we are beginning the testing process right now.

There are a lot of reburns….. Around 10-20 bad fibers per case. Loss Thresholds are: 1310nm: .20db Splice loss 1550nm: .10db Splice Loss We are having a lot of trouble hitting these requirements with mass splices. Many have loss of .05 or so above the threshold.

72 mass splices per case, 9 cases, comes out to 648 mass splices total. If one fiber is bad in the mass splice, then the whole ribbon needs to be redone. When we redo one, we risk having another fiber come out bad on that reburned ribbon, which has happened multiple times now.

I’m curious, what do you guys think is the most effective way to get good test results on this cable. Should we be splitting the ribbons and just reburning the bad fibers? Or is there a different way I should be testing to make these pass?

We used (2) Fujikura 90Rs on this job and are testing with an EXFO FTB-1 Pro.

Any advice or suggestions are very much appreciated because this is turning out to be an absolute nightmare.