MSC/Circular.1165 – Revised Guidelines for the Approval of Equivalent Water-Based Fire-Extinguishing Systems – Set C

Source: MSC/Circular.1165 – Revised Guidelines for the Approval of Equivalent Water-Based Fire-Extinguishing Systems for Machinery Spaces of Category A and Cargo Pump-Rooms, including Appendix A (component manufacturing standards) and Appendix B (test method).
Reference: imorules.com – MSC/Circ.1165

Question 1 of 10

1. How is the response time index (RTI) expressed in Appendix A?

A) RTI = t/u, where t is time and u is gas velocity B) RTI = tu^0.5, where t is the time constant of the heat responsive element in seconds and u is the gas velocity in metres per second C) RTI = Q/P^0.5, where Q is flow rate and P is pressure D) RTI = C x t, where C is the conductivity factor

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