What types of ongoing inspections should be done to a bunker?

What types of ongoing inspections should be done to a bunker?

Ongoing inspections and maintenance are essential for bunker safety, functionality, and long-term survivability. Even a well-built bunker can develop structural, mechanical, or environmental issues if left unchecked. Here’s a comprehensive guide:

1. Structural Integrity

  • Frequency: Every 6–12 months, or after seismic events, heavy storms, or ground shifts.

  • Check for:

    • Cracks in walls, floors, or ceilings

    • Water intrusion or leaks

    • Corrosion or rust on metal reinforcements

    • Settlement or shifting of foundation

  • Tip: Keep a structural engineer involved for periodic professional inspection.

2. Water and Moisture Systems

  • Frequency: Monthly for visual checks; yearly for full system inspection.

  • Check for:

    • Plumbing leaks and water pressure

    • Standing water or damp spots

    • Proper function of sump pumps, water tanks, or filtration systems

  • Maintenance: Replace filters, inspect tanks, clean drains, and test water quality.

3. Power Systems

  • Frequency: Monthly visual check; quarterly or semi-annual functional tests.

  • Check for:

    • Generators, batteries, and solar panels

    • Fuel supply and storage conditions

    • Wiring integrity and circuit breakers

  • Maintenance: Run generators periodically, rotate fuel, charge batteries, and test emergency lights.

4. Ventilation and Air Quality

  • Frequency: Monthly visual and functional checks; filter replacement as needed.

  • Check for:

    • Proper airflow in all rooms

    • Carbon monoxide, CO₂, radon, or other gas detection systems

    • Clean and replace HEPA or activated carbon filters

  • Maintenance: Ensure backup fans are operational and vents are clear of debris.

5. Fire and Safety Systems

  • Frequency: Monthly for smoke and CO detectors; yearly for suppression systems.

  • Check for:

    • Smoke, heat, and CO detectors

    • Fire extinguishers and suppression systems

    • Emergency lighting and signage

  • Maintenance: Replace batteries, inspect extinguisher pressure, and test alarms.

6. Waste and Sanitation Systems

  • Frequency: Weekly or monthly depending on use; quarterly for tanks and composting systems.

  • Check for:

    • Septic tanks, compost toilets, or chemical toilet status

    • Gray water systems for clogs or leaks

    • Odors and pest intrusion

  • Maintenance: Empty holding tanks, clean systems, rotate compost, and sanitize surfaces.

7. Mechanical and Equipment Inspections

  • Frequency: Monthly to quarterly.

  • Check for:

    • Pumps, generators, air compressors, or other mechanical systems

    • Emergency tools and backup equipment

    • Storage integrity (shelves, anchors, tie-downs)

  • Maintenance: Lubricate moving parts, test functionality, and replace worn components.

8. Security and Access

  • Frequency: Monthly; after any security breach or event.

  • Check for:

    • Doors, locks, and blast doors

    • Surveillance systems and alarms

    • Emergency egress routes and signage

  • Maintenance: Lubricate locks, test alarms, and ensure backup keys or override systems are available.

9. Environmental Monitoring

  • Frequency: Continuous if sensors installed; monthly if manual.

  • Check for:

    • Humidity and temperature levels

    • Pest or rodent activity

    • Mold or mildew growth

  • Maintenance: Adjust dehumidifiers, inspect for leaks, and remove pests as needed.

10. Best Practices

  1. Create a detailed inspection log — date, findings, corrective actions.

  2. Prioritize safety-critical systems (air, water, power).

  3. Train all occupants on basic inspections and emergency procedures.

  4. Schedule professional inspections periodically for structural, electrical, or mechanical systems.