METHOD AND APPARATUS FOR CORROSION MONITORING DURING STEAM GENERATOR CLEANING

摘要

A self-sampling corrosion monitor is structurally adapted to be connected to the blowdown system or other piping systems external to the steam generator (14). The monitor includes a pump (24) for providing positive solvent flow through the monitor, and a regenerative heat exchanger (30) using recovered heat at the outlet. Magnetite (44) is also added to a sludge cup within the corrosion monitor vessel (40) to simulate real time measurement of short-lived corrosion conditions in the steam generator. In addition, the available equipment is modified to provide automatic microprocessor-controlled range selection. Still further, data acquisition, storage, and display techniques are modified.