MSC.1/Circ.1432 – Maintenance and Inspection of Fire Protection Systems and Appliances – Set E

Source: MSC.1/Circ.1432 – Revised Guidelines for the Maintenance and Inspection of Fire Protection Systems and Appliances (31 May 2012), circular and annex, sections 1 to 6 and 8 to 10.
Reference: imorules.com – MSC.1/Circ.1432

Question 5 of 10

5. Every five years, foam proportioners or other foam mixing devices should be tested to confirm that the mixing ratio tolerance is within:

A) +30 to -10% of the nominal mixing ratio defined by the system approval B) +10 to -30% of the nominal mixing ratio C) Plus or minus 5% of the nominal mixing ratio D) Plus or minus 20% of the nominal mixing ratio

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