Description
MAWP & MDMT per ASME VIII Div 1 Calculation
Engineering Spreadsheet — Instant Download
What This Spreadsheet Does
Determines MAWP and MDMT values for pressure vessel components per ASME VIII Division 1 — the two key ratings stamped on the vessel nameplate and recorded on the U-1 form. Used for new design rating and re-rating of existing vessels.
What’s Inside the Excel File
- Inputs — component geometry, material spec, allowable stress at design temperature, corrosion allowance, joint efficiency
- MAWP calculation for shell, heads, nozzles — governed by lowest component
- Hot and cold MAWP at design and ambient temperatures
- MDMT determination per Part UCS-66 and UCS-66.1 impact test exemption curves
- UCS-66.1 stress ratio reduction for components operating below maximum stress
- Hydrotest pressure per UG-99(b) or UG-99(c)
Who This Is For
- Pressure vessel design engineers
- QA/QC engineers verifying nameplate ratings
- Inspection engineers performing re-rating of existing vessels
- EPC mechanical teams
Codes & Standards Referenced
- ASME VIII Division 1 — particularly UG-22, UG-99, UCS-66, UCS-66.1
How It Works
| 1 | Purchase — secure payment |
| 2 | Download — instant Excel access |
| 3 | Enter Values — vessel and material data |
| 4 | Get Results — MAWP, MDMT, hydrotest |
File Format & Compatibility
Microsoft Excel (.xlsx). Opens in Excel 2016+, Excel 365, Google Sheets. No macros, no locked cells.
What You Get After Payment
- ✅ Instant download (also emailed)
- ✅ Lifetime access
- ✅ Engineer email support
- ✅ 7-day refund if file fails to open
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Frequently Asked Questions
New design or re-rating?
Both — works for new vessel rating and for re-rating existing vessels after thickness inspection.
Impact test exemption curves?
Yes — Curves A, B, C, D from Figure UCS-66 are embedded.
Custom version needed?
Request a custom quote.
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