Boiler Noise

• Click here for a plot of the latest week of data for boilers 1, 2, 5, & 6

  • Plots for previous weeks will begin on page 2.

• Click here for numbers of run hours for boilers 3 & 4.

• Click here for a summary of UVMMC’s boiler comparison study & a 1-paragraph intro to the paper “Thermoacoustic Vibrations in Industrial Furnaces and Boilers”

• Click here for a brief description of ‘nulls’ for the stack silencer (frequencies where it does not reduce the noise much) and two graphs.

• Click here for a brief primer on resonance in tubes (such as the boiler) and “rumble” (i.e., low frequency noise) in boilers.

Background

• Dec. 17, 2018 - UVMMC agrees to reduce usage of problematic boilers 5 & 6, shooting for a threshold of 70% and provide weekly summaries of hourly boiler operations on Mondays.
• Dec. 17 - City Councilor Richard Deane asks UVMMC to reduce operation of boilers 5 & 6 and requests operational data for boiler levels.
• Dec. 14-17 - Mayor Weinberger asks City Councilor Deane to request operational data for boiler levels.
• Dec. ~10 - ~17 - UVMMC is contacted by several State Legislators, Mayor Weinberger’s office, members of the Green Mountain Care Board, and UVM President Sullivan’s office, among others about the ongoing boiler noise issues.