Causes and Repair Process of Fiber Optic Cable Line Faults
2023-08-22
PART 01: Classification of Fiber Optic Cable Line Faults
Based on the situation of fiber interruption in the cable, the types of faults can be divided into three categories: total cable interruption, partial bundle tube interruption, and partial fiber interruption within a single bundle tube.
1.Total Cable Interruption
If there are reserves on both sides of the site, a centralized reserve can be added by introducing a new connector.
If there is a joint near the fault point and sufficient reserves on-site, a reserved fiber can be pulled and the original joint can be utilized.
In case there are no reserves or joints near the fault point, extending the cable is recommended.
2.Partial Bundle Tube Interruption or Partial Fiber Interruption within a Single Bundle Tube
If there is a joint near the fault point and sufficient reserves on-site, a reserved fiber can be pulled and the original joint can be utilized.
In case there are no reserves or joints near the fault point, extending the cable is recommended.
To repair such faults without affecting other operational fibers, the preferred method is the "sky window" splicing method.
PART 02: Analysis of Causes of Fiber Optic Cable Line Faults
There are four main categories of causes leading to fiber optic cable line faults: external factors, natural disasters, cable defects, and human factors.
1.Faults Caused by External Factors
Excavation: For faults caused by excavation, verify cable damage in handholes near the fault point and perform bidirectional testing on the interrupted cable.
Vehicle Accidents: Test the fault point cable bidirectionally and then proceed with targeted repair.
Gunfire: This type of fault is usually partial rather than total interruption, making it difficult to locate.
2.Faults Caused by Natural Disasters
Vehicle Accidents: Test the fault point cable bidirectionally and then proceed with targeted repair.
Gunfire: This type of fault is usually partial rather than total interruption, making it difficult to locate.
Damage from animals (rodents, birds), fires, floods, strong winds, ice, lightning, and electrical faults.
3.Faults Caused by Cable Self-Defects
a.Natural Fiber Breakage: Due to the fragile nature of fiber made from glass or plastic, it can weaken over time and break naturally.
b.Temperature Effects: Extreme temperatures can lead to fiber damage or increased attenuation.
4.Faults Caused by Human Factors
b.Temperature Effects: Extreme temperatures can lead to fiber damage or increased attenuation.
a.Maintenance Mistakes: Human errors during maintenance or installation can lead to cable faults, such as improper splicing, bending, or accidental cuts.
b.Theft: Cable theft resulting in cable interruption.
c.Vandalism: Intentional damage causing cable interruption.
b.Theft: Cable theft resulting in cable interruption.
c.Vandalism: Intentional damage causing cable interruption.
PART 03: Principles of Fault Handling
The priority is to restore the operational system, minimize downtime, and take immediate action regardless of time, weather, or maintenance boundaries.
The general principles for fault handling are: restore before repair, core before edge, local before remote, and handle based on fault severity. In cases of multiple simultaneous faults, prioritize major ones. Repairs should not halt until line issues are resolved.
PART 04: Fiber Optic Cable Line Fault Repair Process
1.Post-Fault Handling:
Different fault types require varying approaches.
6.Cable Repair:
a.If usable fibers are available on the same route, substitute the interrupted fiber with another good one following an emergency plan, and then repair the faulted fiber.
b.If substitution is impossible, implement repair or substitution according to the emergency plan, prioritizing critical circuits.
2.Fault Localization: Determine the fault location quickly and notify relevant maintenance units for further testing. 3.Preparation for Repair: Equip repair tools and instruments, notify maintenance personnel, and start the investigation.
4.Establish Communication: Maintain communication with the control room once on-site.
5.Organization and Command: Technical department leads repairs, supervising the process. Maintenance unit leaders command the repair on-site.b.If substitution is impossible, implement repair or substitution according to the emergency plan, prioritizing critical circuits.
Use emergency cables or other measures to restore the main fiber channel, analyze the situation, document findings, and report to authorities if needed.
7.Service Restoration: Test the repaired cable, confirm functionality, and restore communication as quickly as possible.
8.Post-Repair Handling: Clean tools, organize data, complete paperwork, secure the site, and leave personnel on-site if necessary.
9.Line Data Update: Update line data, summarize repair actions, and report to higher authorities after repair completion.
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Choosing Faso means choosing reliability, innovation, and a commitment to building lasting partnerships. We extend a warm invitation to all fiber optic cable buyers worldwide to connect with us and explore the potential for collaboration. Let's empower connectivity together!
Choosing Faso means choosing reliability, innovation, and a commitment to building lasting partnerships. We extend a warm invitation to all fiber optic cable buyers worldwide to connect with us and explore the potential for collaboration. Let's empower connectivity together!
We look forward to the opportunity of collaborating with you and contributing to your success.
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