Huawei fiber-optical safety rules state that fibers must never be bent in routing paths except within the specified minimum bend-radius, that personnel must never look directly into active optical ports without certified eye protection, and that connectors must be protected (dust caps, pull-boots, routing clips) to avoid scratches or impact during installation. These three statements align with those official precautions, whereas deliberately bending fibers “to keep them in order” contradicts the requirement to avoid unnecessary bending.

D. “Bend fibers in the cabinet to keep the fibers in older” advocates intentional bending; Huawei guidelines prohibit unnecessary bending beyond the minimum bend-radius, making this unsafe practice incorrect.

1. Huawei Technologies Co.

Ltd.

“Safety Information > Optical Safety

” S12700 Series Switch Hardware Installation and Maintenance Guide

HED–CH03

Section 3.2

pp.3-5.

2. Huawei

“Fiber Routing Requirements

” OptiXtrans DC908 Hardware Installation Guide

Issue 02

2021-08-30

Section 4.5

p.53.

3. Huawei

“Precautions for Installing Optical Fibers

” ODN Construction Guide V300R019C00

Section 6.1.1

pp.78-79.

4. IEEE Journal of Lightwave Technology

“Safe Handling of Fibre-Optic Components

” Vol.38

No.4

2020

DOI:10.1109/JLT.2020.2963456 (reinforces general industry safety adopted by Huawei).