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Boiler Controls
Can someone replace the drum water level gauges with a “magnetic type” level indicator on a Heat Recovery Steam Generator (HRSG). The HRSG is a three pressure level drum with high pressure operating at 2000 psi and 1050 F?
Owners should consult with and obtain approval from their insurance company inspector of record, who would be familiar with the equipment and operations. Compliance with ASME Section I requirements is necessary per SPS 341.
Review these sections:
ASME Section I, PG 60.1 Requirements for water level indicators.
ASME Section I, PG 60.2 Requirements for water columns
ASME Section I, PG 60.3 Requirements for connections
Does SPS 341 require all single-family installations to include a low water cut-off as do commercial projects?
Yes, SPS 323.04(3) of the Uniform Dwelling Code (UDC) states boilers shall comply with SPS 341, the Boilers and Pressure Vessels Code.
Does Wisconsin allow automatic bottom blow down of low-pressure boilers?
SPS 341 does not address this. DSPS cautions against the practice for safety reasons.