Boiler permit to operate

Definition

A boiler's yearly permit to operate, which California does not require of a low-pressure boiler.

Why It Matters

California puts every boiler its orders cover through an annual internal and external inspection, and requires a permit to operate. The orders also take low-pressure, miniature and other small boilers out of annual inspection and the permit, provided their controls are kept working, so the rating plate decides what the diligence budget covers. The longer cycle where an inspector reads the operating logs and water treatment records belongs to plants the state approves for a longer gap between internal inspections. Ask for the current permit or the exemption the boiler sits under, and read a thin water-treatment record as a repair bill waiting either way.