ASME 45mm acceptance calculator - NDT Inspect - NDT Career and Community Portal

ASME VIII-2 Table 7.10 Acceptance Calculator

Fixed wall thickness t = 45 mm | Direct Table 7.10 values for 25 mm ≤ t < 64 mm

Table basis: a/l → allowable a/t S rule: Surface if S ≤ a/2 Minimum flaw length note: l = max(actual l, 6.4 mm)

Project / Report Information

Project / Vessel

Component / Weld ID

Inspection Method

Inspector

Calculation Settings

Wall Thickness t (mm)

Combine flaws when ligament gap ≤ (mm)

Mid-wall tolerance band (mm)

Interaction mode

Interpolation logic: for t = 45 mm, allowable a/t uses the Table 7.10 values directly from the 25 mm ≤ t < 64 mm group. Intermediate a/l values are linearly interpolated. No thickness interpolation is required.

Input Flaws

ID	Start Pos. (mm)	Length l (mm)	Height a (mm)	Center Depth z from OD (mm)	X Offset in Weld (mm)	Auto S (mm)	Class	Region

Input guidance: enter flaw start position along weld, actual flaw length l, flaw height a, center depth z from OD, and optional X offset relative to weld centerline. For Table 7.10 evaluation, this calculator uses effective length = max(actual l, 6.4 mm).

Evaluation

Input flaws

Effective flaws

Accepted

Rejected

Acceptance Plot (a/l vs a/t)

Interactive plot of effective flaws against the ASME VIII-2 Table 7.10 allowable curves for 45 mm thickness.

Surface allowable curve Subsurface allowable curve Accept Reject

Effective Flaw Results

Eff. ID	Constituent flaws	Start	End	Actual l	Eff. l	a	S	Class	Region	a/l	a/t	Allowable a/t	Status

Weld Configuration & Geometry

Weld Configuration

Geometry Thickness (mm)

Root Gap (mm)

Root Face / Land (mm)

Top Bevel Depth (mm)

Bottom Bevel Depth (auto, mm)

Top Left Bevel Angle (deg)

Top Right Bevel Angle (deg)

Bottom Left Bevel Angle (deg)

Bottom Right Bevel Angle (deg)

Cap Height OD (mm)

Back Cap Height ID (mm)

Plot Margin Each Side (mm)

Sync Geometry Thickness to t

Weld Length Display (mm)

Smart geometry note: for double-sided welds the Bottom Bevel Depth is calculated automatically as Thickness − Top Bevel Depth − Root Face/Land.

Weld Configuration & Defect Location View

Interactive weld cross-section for 45 mm thickness with corrected upper and lower bevel geometry.

Weld profile OD cap ID / root side Accept Reject

Weld Length / Flaw Location View

Top view along weld length showing each flaw span and grouped effective flaw span.

Pan along weld length

0.0 mm 50.0 mm

Raw flaw Effective grouped flaw Accept Reject

Engineering Notes

Acceptance basis: ASME VIII-2 Table 7.10 for 25 mm ≤ t ≤ 300 mm.

Thickness used: 45 mm.

Classification rule: a subsurface indication is treated as a surface flaw when S ≤ a/2.

Interpolation used: linear interpolation for intermediate flaw aspect ratio a/l only. For 45 mm thickness, the 25 mm ≤ t < 64 mm column is used directly.

Smart weld geometry: for double-sided preparations, bottom bevel depth is calculated automatically from top bevel depth and root face / land.