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 4 of 10

4. Nozzles should be provided with a nominal inlet thread of what minimum size, or equivalent?

A) 3 mm (1/8 in.) B) 6 mm (1/4 in.) C) 10 mm (3/8 in.) D) 15 mm (1/2 in.)

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