Boiler

A boiler, comprising:

• a boiler main body;
• and
• a steel support frame suspending and supporting the boiler main body,
• wherein the boiler main body includes:
• a furnace wall composed of water pipes and plate-like fins arranged in an alternating manner;
• an internal element housed inside the furnace wall;
• and
• a buffering mechanism configured to interfere with the internal element to attenuate vibration energy when relative displacement, of the internal element with respect to the furnace wall, occurs and exceeds a predetermined value,
• wherein the furnace wall includes an inner surface facing the internal element and an outer surface opposite the inner surface,
• the buffering mechanism is fixed to the inner surface of the furnace wall,
• the buffering mechanism includes an energy attenuating body configured to compress to plastically deform due to the interference, and
• the energy attenuating body is configured to have mechanical characteristics whereby the energy attenuating body yields prior to the internal element and the furnace wall becoming damaged when the internal element interferes with the energy attenuating body.