Tools & Accessories
8.1 Accessories & Spare Parts Inventory List
A well-stocked accessories and spare parts inventory is essential for minimizing downtime during field maintenance and emergency repairs. Underground environments present access challenges — reaching a failed camera in a deep tunnel or flooded pump room may require specialized equipment and safety procedures. Having the right spare parts on-site reduces mean time to repair (MTTR) from days to hours. The recommended inventory list below covers five categories and is sized for a typical 50-camera, 10-zone installation. Scale quantities proportionally for larger or smaller deployments.
8.2 Installation Tools
Underground security surveillance installations require a specific set of tools that differ from standard surface installations. The confined spaces, high humidity, and potential for explosive atmospheres (in some facilities) impose additional requirements on tool selection. All tools used in potentially explosive atmospheres must be ATEX/IECEx certified. The following table lists the mandatory and recommended tools for underground installations.
| Tool | Specification | Purpose | Priority |
|---|---|---|---|
| Network & Fiber Tools | |||
| OTDR (Optical Time Domain Reflectometer) | 1310/1550 nm, dynamic range ≥30 dB | Fiber link testing, fault location, end-to-end loss measurement | Mandatory |
| Fiber Cleaver | Precision cleaver, <0.5° cleave angle | Field fiber termination and splicing | Mandatory |
| Optical Power Meter + Light Source | 1310/1550 nm, ±0.2 dB accuracy | Insertion loss measurement for fiber links | Mandatory |
| Network Cable Tester | Cat6 wiremap + PoE test, TIA-568 standard | Verify Cat6 wiring, PoE voltage, and pin assignment | Mandatory |
| RJ45 Crimping Tool | Pass-through or standard, Cat6 compatible | Field termination of Cat6 cables | Mandatory |
| Electrical & Power Tools | |||
| Clamp Meter | AC/DC, 600 A, TRMS, CAT III 600V | Measure PoE current, verify power supply output | Mandatory |
| Earth Resistance Tester | 3-pole method, 0–200 Ω range | Verify grounding resistance <1 Ω at all cabinets | Mandatory |
| Insulation Resistance Tester | 500/1000 VDC, >1 GΩ range | Cable insulation test before energizing | Recommended |
| Mechanical & Safety Tools | |||
| Torque Screwdriver Set | 0.5–5 Nm, metric and imperial bits | Correct torque on camera mounts and cabinet hardware | Recommended |
| Gas Detector | LEL, O2, CO, H2S, 4-gas | Confined space entry safety check before underground work | Mandatory (confined space) |
| Thermal Camera (handheld) | 160×120 px minimum, ±2°C accuracy | Detect hot spots in cabinets, verify camera IR operation | Recommended |
| Laser Distance Meter | ±1.5 mm accuracy, 100 m range | Camera coverage area measurement, cable run length estimation | Recommended |
8.3 Consumables & Sealing Materials
Proper sealing of all cable entries, conduit joints, and enclosure penetrations is critical for maintaining IP ratings in underground environments. The sealing materials must be compatible with the enclosure material, resistant to the chemicals present in the environment, and rated for the operating temperature range. The following consumables are required for every underground installation and must be stocked as part of the site maintenance kit.
| Material | Specification | Application | Qty per 10 Cabinets |
|---|---|---|---|
| Silicone Sealant (IP67 grade) | Neutral cure, -60°C to +200°C, UV stable | Cable entry sealing, conduit joints, enclosure gaskets | 10 tubes (310 ml each) |
| Cable Gland Sealing Compound | Polyurethane foam, expanding type | Multi-cable conduit sealing (fire-rated where required) | 5 cartridges |
| Anti-Corrosion Spray | Zinc-rich primer, aerosol, 400 ml | Touch-up of scratched powder coating, exposed steel | 5 cans |
| Conformal Coating Spray | Acrylic, IPC-CC-830B, 400 ml | PCB protection in high-humidity environments | 3 cans |
| Heat Shrink Tubing (assorted) | 2:1 ratio, -55°C to +125°C, UL224 | Cable splice insulation, connector strain relief | 2 assorted kits |
| Cable Labels (self-laminating) | Polyester, -40°C to +150°C, UV stable | Cable identification at both ends of every run | 200 labels per roll, 2 rolls |
| Fiber Cleaning Kit | IEC 61300-3-35 compliant, LC/SC adapters | Fiber connector end-face cleaning before every connection | 2 kits |
Sealing Rule: Every cable entry into an IP-rated enclosure must be sealed with an IP67-rated cable gland of the correct size for the cable outer diameter. Never use foam or tape as a substitute for a proper cable gland. Unsealed cable entries are the most common cause of IP rating failure in underground installations and will void the enclosure warranty.