H&S Historical Evidence Library

Pipe & Boiler Insulation

Start with what you remember, then test the history against period-specific records. This page organizes a historical research path; it does not establish what was present at a particular workplace.

Thermal insulationEvidence-led
Memory clue: White/chalky pipe covering, block insulation, blankets, insulating cement, corrugated-looking paper, canvas-covered insulation

Work activities worth reconstructing

  • Installing or removing insulation
  • Accessing equipment beneath insulation
  • Repair and maintenance near damaged insulation
  • Boiler or steam-system work

Equipment and systems that may help identify the history

Pipes

Boilers

Hot-water tanks

Heat exchangers

Ducts

Time changes the answer

EPA states installation of certain friable asbestos pipe and block insulation on facility components was banned in 1975; older installed material can remain.

Historical sources used for this research path

These sources support the generic historical relationship described here. They do not establish a manufacturer, product or material at a particular New York workplace.

Continue from your memory

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