Design Calculation
Short checklist to complete a design calculation according to the ASME Boiler and Pressure Vessel Code Section VIII-1.
0 |
Computer program verification incl. evidence of alternate calculation per method applied |
1
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Drawing + Calculation a) Drawing No. and Revision b) ASME Code Edition and Addenda c) Code Cases d) Units: SI/U.S. Customary e) Design- operational data f) MDMT(see also point 12) g) Materials h) Dimensions(ID, T, OD etc) I) Loads (use separate checklist as well) j) Check permissible S- value listed in applicable Code Section k) Services Restrictions l) Nameplate data, location of nameplate m) National Board registration Y/N n) CRN- Registration Y/N o) Identification of joints on the drawing p) Assignment WPS to joints on the drawing q) Compliance of groove design drawing with ranges on WPS |
2 |
Test Pressure (Minimum) a) Hydrostatic Test 1.3*MAWP*(S[Ttest] / S [Tdesign] ) b) Pneumatic Test 1.1* MAWP*(S[Ttest/ S [Tdesign]) |
3 |
Type of Weld Joint a) RT Examination b) Selection, location of "Spot" c) NDE(PT/MT) on Corner Joints Joggle Joint d) Hubbed flanges from rolled plate |
4 |
Corrosion Allowance |
5 |
Tolerances a) Wall thickness, plate and pipe b) Misalignment c) Tapered transitions d) Staggered longitudinal joints e) Out-of-roundness for internal pressure f) Out-of-roundness for ext. pressure calculated + data transfered to prod./QC |
6 |
Inspection Openings |
7 |
Check whether design calculations have been made for all presure bearing parts: a) Shell, conical reducer section(conical reducer section shall also meet the requirements of Appendix 1-5 and/or 1-8) b) Dished heads, conical heads c) Compensation of openings(large openings see also App. 1-7 or 1-10) d) Flanges (App. 2 or ASME B16.5) e) Covers, flat heads f) Bolts g) Tube sheets: applicability and use od UHX(otherwise, see also TEMA) h) Expansion joint (see also EJMA) i) Nozzle attachment welds(allowable stresses in welds) j) External pressure k) Jacketed vessel Appendix 9 l) loadings e.g. vessel supports m) shell sections and heads extreme fibre elongation |
8 |
Minimum wall thickness a) Shell b) Dished head c) Nozzle d) Remaining wall thickness underneath tapped holes |
9 |
Minimum weld dimensions a) Flange attachment to the nozzle b) Nozzle attachment to the shell or head c) Attachment of flat heads + covers |
10 |
Pressure rating of standard parts based on material and temperature (ASME Products) Calculated at straight seamless pipe |
11 |
Heat treatment |
12 |
Impact Test Requirements (cryogenic vessels) Exemptions documented for all mat. |
13 |
Exposed inside edges chamfered or rounded |
14 |
Telltale holes in nozzle reinf. plates |
15 |
Split/ segmental reinf. plates |
16 |
Referenced standards |
17 |
Proof Test |
18 |
Partial Data Report |
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