A chlorine gas mask should be provided

• A. Just inside the chlorine room door
• B. Just outside the chlorine room door
• C. In the plant superintendent's office
• D. In a locked tamper-proof container

Answer: (B)

PPE for hazardous chlorine must be readily accessible so you can protectedly respond in minutes. Placing the chlorine gas mask just outside the chlorine room door gives immediate access as you approach or exit the area, allowing you to don the mask quickly before exposure worsens or you move to a safer location. Storing it inside the room would slow response and could require entering a space that’s potentially leaking gas. A locked tamper-proof container would also delay access in an emergency, defeating the purpose of rapid protection. The plant superintendent’s office is far from the work area and not practical for urgent protection. So the best placement is just outside the chlorine room door.