Hazardous Material Storage Requirements

Safe Chemical Storage Practices

This article provides safety requirements for storing hazardous materials and other types of chemicals; including flammable, non-flammable and combustible substances. Follow the hazardous material storage requirements listed below to maintain a safe work atmosphere.

General Safety Requirements For Storing Hazmat

  • Store hazardous materials away from ignition sources. Keep hazardous material storage away from heat or direct sunlight. Ignition sources can create chemicals to react, ignite, and/or explode.
  • Segregate incompatible chemicals. Separating hazmat storage atmospheres can eliminate risks including harmful vapors, fires and explosions.
  • When storing flammables or combustibles nearby occupied facilities utilize fire-rated chemical storage buildings. Check with your fire marshal for local variance regulations and fire codes.
  • Hazardous material liquid storage should be stored in secondary containment trays. Different trays offer resistance to different chemicals. Select proper trays for each type of chemical.
  • Do not stockpile chemicals. Only purchase what is needed.
  • Utilize proper ventilation systems. Consider mechanical ventilation or passive ventilation. Research material safety data sheets or contact local officials for proper ventilation processes.

Hazardous Material Storage Requirements – Refrigerators/Freezers

  • Use laboratory-safe / explosion proof refrigerators or freezers for storing certain types of flammable chemicals.
  • Do not use domestic type refrigerators for storing chemicals.
  • Do not store food in laboratory-safe refrigerators.
  • Label chemical storage refrigerators “CAUTION KEEP FIRE AWAY – FLAMMABLE MATERIALS REFRIGERATOR”.

Flammable and Combustible Hazardous Material Storage Requirements

Flammable Liquids Class I: Liquids having a flash point below 100°F (37.8°C) and vapor pressures not exceeding forty (40) psi at 100°F (37.8°C). Class I flammable liquids are divided into three classes illustrated below:

  • Class IA: A liquid having a flash point below 73°F (22.°8C) and boiling points below 100°F (37.8°C).
  • Class IB: Liquids having a flash point below 73°F (22.8°C) and boiling points at or above 100°F (37.8°C).
  • Class IC: Flash points at or above 73°F (22.8°C) and below 100°F (37.8°C).

Combustible Liquids: Liquids having a flash point at or above 100°F (37.8°C). Classes are subdivided below:

  • Class II: Liquids having a flashpoint at or above 100°F (37.8°C) and below 140°F (60°C).
  • Class IIIA: Liquids having flashpoints at or above 140°F (60°C) and below 200°F (93.4°C).
  • Class IIIB: Liquids having flash points at or above 200°F (93.4°C).

US Chemical Storage is dedicated to keeping your hazardous material storage safe, secure and 100% compliant. Our Strength is Your Security.

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