Open Table
Operating time
(% of year)
Equivalent continuous process monitoring frequency time in use
Monthly Quarterly Semiannually
  0 to <25% Quarterly Annually Annually.
25 to <50% Quarterly Semiannually Annually.
50 to <75% Bimonthly Three times Semiannually.
75 to 100% Monthly Quarterly Semiannually.

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