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Laboratory Fire Safety Inspection

Learn what inspectors look for and how to prepare your lab.

What to expect

The campus fire marshal works in cooperation with the Research Assistance Program to conduct fire inspections in all campus laboratories. Inspections focus on compliance with fire and life safety regulations including Title 19 of the California Code of Regulations and the California Fire Code, as well as campus policies. Fire inspections will not include a fire drill or interfere with research/instruction.

How to prepare

Biosafety Cabinets

BSC destroyed by fireInspectors look for:
  • Use of open flames in Biological Safety Cabinets
  • BSCs plumbed with a gas line

Open flames and flammable gases are prohibited in biological safety cabinets at UC San Diego unless approved by EH&S and Department Chair. See open flames and flammable gas policy

BSCs plumbed with a gas line will have their gas lines removed or shut off by Facilities Management (FM). Environment, Health & Safety will coordinate with FM and the lab's staff to facilitate removal or shut off of gas lines. New BSC installations will not be connected to gas lines. Prohibition of open flame is intended to prevent fires or explosion within BSCs. Many alternatives to continuous flame devices are available. Read the open flames and flammable gas policy for details.

CFC chemical allowance

Chemical storage areaInspectors look for:
  • Compliance with California Fire Code (CFC) chemical allowances within the building.

Keep inventories within fire code limits.

Fire code limits differ by building, building floor, or a defined storage. In some cases, these limits are subject to building occupancy, control areas, maximum allowable quantity and other circumstances. See chemical storage and inventory guidelines (fire code limits) for a description of variables that determine chemical allowances for each building. Department safety officers (DSOs) can monitor for control area overage through the My Research Safety Web portal. View and export uniform fire code summaries and details by building.

Contact your EH&S Research Assistance Program specialist to obtain more information about chemical storage allowances for your facility.

Chemical storage

Segregated chemicals in secondary containmentInspectors look for:
  • Incompatible chemicals are segregated and labeled
  • Proper storage of high hazard materials

Segregate incompatible chemicals to prevent accidental mixing which could cause fire, explosion, or toxic gases.

Follow UC San Diego chemical storage and inventory guidelines for safely and securely managing chemical supplies and complying with fire code requirements. Implement special storage requirements for high-hazard materials. Learn more about chemical compatibility guidelinesorganic peroxide formers and pyrophorics and other highly reactive materials.

Note: Pyrophoric materials can only be stored and used in completely fire sprinkled buildings, per California Fire Code.

Compressed gases

CG cylinders properly restrainedInspectors look for:
  • Proper storage and use of compressed gases
  • Special precautions for flammable, oxidizing, or corrosive gases

Follow requirements for compressed gases in UC San Diego facilities.

UC San Diego researchers working with compressed gases must follow an approved hazard control plan (HCP) obtained through the Hazard Control Plan (HCP) application. Compressed gas safety requirements are determined by the hazard class of the gas. Check toxic and hazardous gas classification to determine the hazard class of your material. Then follow the appropriate requirements.

Note: Compressed gas cylinders must be secured at all times, whether empty or full. The image above illustrates properly secured cylinders.


fire wall

Inspectors look for:

  • Modifications to wall or ceiling assemblies.
  • Breaches of fire-resistant construction

Keep walls and ceilings intact.

Some laboratories are constructed with fire-resistant barriers, such as walls and ceilings. These fire-rated constructions help prevent the spread of fire for a prescribed period of time. In case of a fire, displaced ceiling tiles or drilled holes compromise adjacent rooms and floors. Avoid making modifications to wall or ceiling assemblies. Any modifications (e.g., addition of a sink, running cable or wires, etc.) to a laboratory must be reviewed and approved by Facilities Management and Fire and Life Safety.

Corridors and CORE spaces

There's a clear exit path through this corridor.Inspectors look for:
  • Obstructions to exit corridors and aisles
  • Exit signage and emergency lighting
  • Fire doors propped open; dysfunctional closing mechanisms
  • Mechanical, electrical, custodian, and CORE spaces clearance
  • Breaches of fire-resistant construction

Learn what is permitted and prohibited in corridors to ensure building occupants have a clear pathway and safe exit in an emergency.

UC San Diego has a strict policy for permissible and prohibited use of equipment and storage of materials in corridors and CORE spaces. Follow UC San Diego corridor safety requirements.

Electrical safety

Frayed electrical cord plugged into a surge protectorInspectors look for:
  • Frayed, cracked, or damaged electrical cords
  • Overloaded outlets and multi-plug adaptors
  • Uncovered outlets and electrical boxes
  • Extension cords
  • Obstructed or unlabeled electrical panels
  • Labeling and signage

Identify potential electrical problems and promptly resolve them.

Serious fire and shock hazards can result when electrical equipment is not maintained or properly used. Follow UC San Diego electrical safety guidelines and reduce the possibility of fire or electrical shock.


Exit fire door propped openInspectors look for:
  • Doors from labs to exit corridors that are propped open
  • Maintenance of self-closing door and exit hardware
  • Unsecured equipment or furniture adjacent to exit doors

Keep exit doors closed, unobstructed, and operational.

Learn more about fire doors and how their special construction enables them to hold back smoke/fire long enough for people to evacuate during a fire emergency and limit damage to the building. 

Emergency exit doors and pathways of egress must remain unrestricted, free from obstructions and operational at all times. Remove any item that interferes with the operation, full closure, or access to exit doors. Remove items that interfere with or restrict the path of egress.

Emergency exit signs must be visible, unobstructed, illuminated and pointed in the correct direction of the exit.

For repairs to the exit signs or non-functioning doors, contact Facilities Management using the Facilities Management Request Service.


ABC fire extinguisher can be used on all kinds of fires.

The campus standard for fire extinguishers requires that there must be an ABC extinguisher located within 75 feet of travel in any direction and a minimum of one extinguisher within the lab area and must have a minimal ABC rating of 4A:60B:C. Note that specialty extinguishers, such as C02 and Class D, may be needed in addition to the ABC extinguishers but do not replace the ABC extinguisher requirement.

Inspectors look for:

  • Extinguishers are in designated locations, visible and unobstructed
  • Extinguishers are operational (gauge is in green) and within service date range
  • Appropriate type of extinguishers for materials and processes

Make sure your lab's fire extinguisher is unobstructed and ready to use.

Use the fire extinguisher inspection checklist to perform a monthly inspection of your lab's extinguisher(s). See fire Extinguisher types and maintenance to learn about types of fire extinguishers, maintenance requirements, and how to get training.

Note: Don’t confuse ‘DRY CHEMICAL’ with ‘DRY POWDER’ (terms you see on extinguisher labels). Dry Chemical refers to agents that extinguish class A, B, and C fires, while Dry Powder refers to agents that extinguish class D fires.

Flammable liquids

Example of a bonding and grounding configuration.Inspectors look for:
  • Proper storage and dispensing of flammable liquids

Follow requirements for flammable and combustible liquids in UC San Diego facilities.

Because their vapors ignite and burn easily, flammable and combustible liquids have strict storage requirements. California fire codes strictly limit the total quantity of flammable and combustible liquids and container size that may be stored in a facility. Department safety officers (DSOs) can monitor for control area overage through the My Research Safety Web portal and view and export uniform fire code summaries and details by building. Also, see special refrigerators for flammable liquids storage for more information.


fire strobe and panel

Inspectors look for obstructions to:

  • Fire strobe lights
  • Fire protection alarm systems
  • Obstructed electrical panels
  • Fire sprinklers (see sprinklers for more details)
  • Exit doors, corridors, and aisles

Keep fire protections systems and equipment clear.

Personal protective equipment

Researcher wearing a flame resistant lab coatInspectors look for:
  • Personal protective equipment (PPE) appropriate for the materials, equipment, and processes in use

Minimum lab attire and PPE equipment are required at all times for workers in labs: full-length pants (or equivalent) and closed toe/heel shoes.

Additional PPE, where pyrophorics and other highly reactive materials are present, may be required, based on the lab hazard assessment. UC San Diego researchers working with materials included on the high hazard chemicals list must follow an approved hazard control plan (HCP) obtained through the Hazard Control Application (HCP). The HCP will identify required PPE. See personal protective equipment for PPE requirements, supervisor and employee responsibilities, and how to select appropriate equipment for your work. See PPE support for researchers for information about UC San Diego's laboratory PPE Distribution Program.


Ceiling fire sprinkler headInspectors look for:
  • Fire sprinklers obstructed by storage or shelving
  • Fire protection systems

Maintain a minimum 18 inches of clearance between a sprinkler head and anything below it.

An obstructed sprinkler cannot detect heat and operate, allowing fire to spread until the next available sprinkler is activated. During one campus lab incident the sprinkler closest to the fire's origin probably would have extinguished the flames. Obstructions blocking the sprinkler prevented it from activating. The fire spread, ultimately causing 3 sprinklers to activate, flooding the lab and the floors below it, all the way down to the basement. Learn more about how fire sprinklers operate.

Note: Pyrophoric materials are not allowed in buildings that are not equipped with sprinklers.

Visit MyResearchSafety for Audits and other DSO Inspection Tools.

Questions? Contact Fire and Life Safety, (858) 534-3659.

For lab-related questions, contact the EHS RAP team