In an emergency, responders can locate an MSDS from:

• A. The facility preincident plan
• B. The on-site chemical inventory
• C. The incident action plan
• D. The emergency phone list

Answer: (A)

Locating hazard information quickly during an emergency relies on having a plan that consolidates safety data and response details for the site. The facility preincident plan is designed for exactly this purpose, listing where MSDS/SDS for chemicals on site can be found and providing the necessary hazard and response information in one place. The on-site chemical inventory shows what is present but not the detailed safety data or where to access it; the incident action plan outlines overall incident tactics and objectives rather than chemical-specific data; and the emergency phone list provides contact numbers but not the safety data itself. So the preincident plan is the most reliable source to locate the MSDS quickly.