Which of the following statements is true concerning the control activators, i.e., pull-handles, push- buttons or levers, for a space protected by a CO2 fixed fire extinguishing system?
• CO2 fixed fire extinguishing systems on vessels and their safety requirements • The purpose and location of control activators (pull handles, push buttons, levers) for CO2 systems • Requirements for pre-discharge alarms in spaces that may be occupied
• Think about why CO2 systems are especially dangerous to people and how that affects both the number of activators and alarm timing. • Consider which statements relate to safety redundancy in operating the system and which relate to warning people before CO2 is released. • Ask yourself: if a stop valve could isolate a space, would you need more or fewer control points to be sure CO2 goes where it is intended?
• Verify what 46 CFR says about number of control activators when a stop valve is installed in the main discharge line. • Check the regulation on pre-discharge alarm duration for CO2 in spaces that are likely to be occupied (how many seconds before discharge?). • Confirm whether each individual statement (A, B, C) matches the regulatory wording; then decide if they can all be simultaneously true.
No comments yet
Be the first to share your thoughts!