Flat tables with one header row, units in column names, numbers stored as numbers and filters on. An Info sheet carries the date, stock source and status definitions.
Sources: HX SHEET.xlsx, Heat Exchanger Gasket data Aug-2025, PRL 19468 sheets 1, 2, 5, TA-2024 Inspection Report. Verify against PRL drawings and TEMA/ASME before use.