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Lockdown Plans

Reference Number: MTAS-1929
Reviewed Date: 09/19/2025

From the ICC’s “Chapter 4 — Emergency Planning and Preparedness,” Section 404 requires fire safety, evacuation, and (where applicable/approved) lockdown plans. 

Here are the key elements (summarized) of what the IFC 2024 Edition requires:

SubsectionWhat it requires / key points
404.1 GeneralWhere a fire safety & evacuation plan is required by Section 403, that plan must also comply with the provisions in 404.2–404.4 (fire safety, evacuation, and lockdown where applicable)
404.2 Plan Contents & LockdownThe plan must include:
  • Identification of individuals who can issue lockdown (and terminate it). 
  • Security measures in regular (normal) operations that could interfere with egress or fire department operations.  
  • Description of emergency/security threats addressed and associated lockdown procedures.  
  • Means and methods for initiating lockdown for each threat, including: a distinct notification method (different from fire alarm), which doors/access points will be secured, how they will be secured, and how locking complies with egress/accessibility (§404.2.3.1).  
  • Procedures for reporting to fire department any lockdown condition that affects egress or fire operations.  
  • Procedures for determining and reporting who is onsite / absent during the lockdown.  
  • Two-way communication between “central location” and each area that may be secured during lockdown (with some occupancy-type exceptions). 
  • Identification of the pre-arranged signal for terminating lockdown and who can issue the termination.  
  • Procedures to unlock doors and verify that egress has been restored to normal after lockdown.  
  • Training procedures and frequency of drills for lockdown plan. 
404.3 MaintenanceThe fire safety, evacuation, and lockdown plans must be reviewed/updated at least annually, or sooner if there are changes in staff assignments, occupancy, or layout of building. 
404.4 Availability & DistributionPlans must be kept available in the workplace; copies given to the fire code official upon request. Also, distributed to tenants, building staff; relevant parts given to employees so they know their roles.

It is important to note that Tennessee has not yet adopted the 2024 edition of the IFC; the statewide minimum code is still the 2021 IFC, plus Tennessee has specific amendments.

Here’s what that means for lockdown plans in Tennessee:

RequirementIn Tennessee under the adopted 2021 IFC + amendmentsNotes / Differences vs. model 2024 IFC
Lockdown Plan RequirementUnder 2021 IFC (Section 404), lockdown plans are permitted (or required if used) only where approved by the fire code official and in compliance with specific contents. 
ContentsThe 2021 version requires many of the same items as the 2024 model: who can order lockdown; how doors/access points will be secured; etc.  
Drills & TrainingRequired under the 2021 code; drills must be conducted according to the approved plan. Training is required.  
Maintenance, Distribution, AvailabilityThe 2021 IFC in Tennessee mandates that fire safety, evacuation, and lockdown plans be reviewed/updated annually or when needed; that the plan be available; that parts be distributed to staff/tenants. 
Locking Means & Egress / AccessibilityTennessee’s code requires compliance with existing rules for egress and accessibility (doors, locking methods etc.), similar to the model code.  

Key Differences & What to Watch For

When comparing the model 2024 IFC requirements vs what Tennessee has right now, here are some things to pay special attention to:

  1. Adoption Date
    • Since Tennessee has not yet universally adopted IFC 2024 for all jurisdictions, some places still enforce the 2021 version. So if you are dealing with a facility in Tennessee, check which code version the local fire code official enforces.
  2. Local Amendments
    • Tennessee may have specific amendments (for example, in how locking devices are allowed, stipulations for school or classroom doors). These can modify or restrict what the model code says.
  3. Scope & Approval
    • Under Tennessee’s 2021 code, the lockdown plan must be approved by the fire code official. It may not be acceptable to simply write a plan without obtaining that approval.
  4. “Permitted” vs “Required”
    • Model 2024 IFC suggests that lockdown plans are required when certain threat conditions are identified. Under Tennessee’s 2021 code, they are allowed/permitted and required if used or if required by the jurisdiction. So usage may be less mandatory in places unless specified.
  5. Notification Methods
    • Having a notification method distinct from the fire alarm signal is emphasized in the model. Tennessee’s 2021 edition also requires that.

What You Should Do / Implement Given Both

To be compliant (both with model code expectations and what Tennessee requires), here are recommended steps:

  • Check whether your facility is governed under the 2021 IFC or whether your jurisdiction has adopted 2024, or has amended versions. Ask your local fire marshal.
  • Ensure you have a written plan that covers both fire safety & evacuation, and—if you decide to or are required to—lockdown procedures.
  • Use the model list of required contents (as listed above) as a checklist. Make sure to include who can order lockdown / end lockdown, door locking/access, communication, etc.
  • Make sure the plan is approved by the fire code official if required in your area.
  • Conduct drills and training per the plan; update it annually or when changes occur.
  • Provide copies or parts of the plan to staff, building service employees, and tenants; keep the plan available for review.