DSEAR Assessment
Ventilation calculator and local job records
Use this app as an assessment aid. A competent person must verify the site conditions, ventilation assumptions and current company procedures before deciding the final action.
Saved assessments
0 recordsInstall on your phone
iPhone: open this page in Safari, tap Share, then Add to Home Screen.
Android: open this page in Chrome, open the menu, then tap Install app or Add to Home screen.
Data storage
Assessments are saved only in this browser on this phone. They are not written back to the company Google Sheet.
Use Backup data before changing phones or clearing browser data. CSV exports can be opened in Excel or uploaded to Google Sheets.
Calculation rules copied from the workbook
Free-area factors: Mesh 30%, Louvres 80%, Cage 100%. Required ventilation is 3% for one-wall distribution and 2% for two or more walls. A frequently visited area passes the workbook’s ventilation test. The final result also requires pressure at or below 75 mbar and no electrical apparatus within 150 mm.