Inspection Documentation

Designers & Mappers SOP Guide

Standard Operating Procedures for using the TEMA Tube Designer, API 650/653 Tank Designer, and Phased Array UT Setup Builder.

TEMA Tube Designer

Industrial heat exchanger tubesheet bundle mapping tool.

TEMA Standard

The TEMA Tube Designer generates dimensional bundle layouts compliant with the Tubular Exchanger Manufacturers Association standards. Inspectors use it to visualize bundles, map active defects, track plugged tubes, and export files to CAD formats.

Custom Polygon Drawing Mode: To model asymmetric channels or custom shell cutouts, select the **Polygon** shape option, click **Draw**, then click on the canvas to place vertices. Double-click to close the layout.

1. Parameters Guide

Parameter	Description	Standard Values
Shell Shape	Defines the boundary geometry of the tubesheet.	Circle, Rectangle, Ellipse, Hexagon, Polygon
Shell Diameter	Inner diameter of the cylindrical shell.	6" up to 60"+ (in TEMA standard increments)
Tube OD	Nominal outer diameter of individual tubes.	5/8", 3/4", 7/8", 1", 1-1/4", 1-1/2"
Pitch Pattern	The angle of tube alignment relative to fluid flow.	Triangular (30°), Rotated Tri (60°), Square (90°), Rotated Square (45°)
Tube Passes	Defines partition lanes for multi-pass exchangers.	1P, 2P, 4P, 6P, 8P

2. Canvas Viewport Tools

Select Tool (S)

Click tubes to select them. Drag a bounding box to bulk-select. Hold `Shift` or `Ctrl` to toggle tubes in/out of the current selection.

Pan Tool (H)

Click and drag to pan across large bundles. Scroll wheel zooms relative to cursor position. Use **Fit View** to reset the viewport.

3. Mapping Defects

Select one or more tubes using the **Select Tool**.
Right-click to open the **Defect Editor** dialog.
Toggle **Plugged** to decommission tubes. (Plugged tubes appear as solid red on the map).
Log inspection findings (e.g., wall loss, crack indications, pitting) and assign location (e.g., Inlet, Outlet, Full Length).
Click **Save** to lock in measurements and update the layout representation.

4. File Actions & Exports

Save / Load

Sync your work to the secure Firestore database attached to active client jobs.

DXF / CAD Export

Download dimensionally precise CAD drawings of the tube pitch vector geometry.

CSV & JSON

Export full reports containing Row/Col offsets, coordinates, and logged defect listings.

Storage Tank Designer

API 650/653 storage tank inspection mapping utility.

API 650/653

The API 650/653 Storage Tank Designer maps wall loss and corrosion thickness readings across three principal areas: shell courses, annular plate rings, and the bottom floor plates.

1. Thickness Mapping Workflows

01 Shell Courses

Input thickness data (Min, Max, Avg) for each vertical plate course. The unrolled cylinder view visualizes thickness trends.

02 Annular Ring

Log UT thickness readings at critical stress clock points: **12**, **3**, **6**, and **9 o'clock** positions.

03 Floor Mapping

Map localized MFL or ultrasonic floor scanner readings by inputting X/Y coordinate offsets per floor plate.

2. Interactive Health Summary

API 653 Integrity Verification

The designer aggregates shell readings, annular inputs, and floor plate grids, then automatically identifies and flags critical spots that violate minimum wall thickness standards.

Calculates Min / Average

Sample Population: Use the **"Auto-populate sample data"** button in the dashboard to fill the courses and floor scans with standard API baseline configurations for demo presentations.

NDT Setup Builder

Phased Array Ultrasonic (PAUT) & Conventional UT modeling engine.

ASME Sec V / ISO 18563

The Setup Builder models ultrasound refraction, beam spreads, near-field limits, and visualizes acoustic coverage over customizable weld bevel profiles on flat or pipe geometry.

1. Main Control Panels

1. Specimen & Weld

Select the material (sets VL/VS velocities), weld templates (e.g. V-groove, Double V, T-joint), specimen thickness, and curved dimensions for pipe OD/ID scans.

2. Transducer & Wedge

Choose active probe elements, pitch spacing, frequency (MHz), and wedges. You can also craft custom configurations and toggle inactive array elements.

3. Scan & Acquisition

Configure sectorial S-scans or linear E-scans, define angular sweeps, gate limits (A & B gates), gain, pulse width, digitizer rates, and rectification.

2. Focal Law Physics

The builder computes Snell's Law refraction indexes, acoustic near-field boundaries, and beam divergence half-angles (-6 dB) to generate focal law delay laws.

Snell's Law:sin(θ₁) / V₁ = sin(θ₂) / V₂

Near-Field limit (N):D² * f / (4 * V)

Beam Divergence half-angle (sin θ):0.514 * V / (f * D)

3. Interactive Acoustics Coverage SVG

The integrated live ray-tracing engine renders wedge placement and sound path reflections through the specimen. Use this visual guide to verify that the refracted ultrasonic beam sweeps across the entire heat-affected zone of the weld, eliminating potential volumetric scan blind spots.

4. Setup Exports

Setup File (.ondt.json)

Saves probe coordinates, wedge properties, material velocity, and acquisition variables, allowing quick setups for future field audits.

Focal Laws (.law.json)

Calculates and exports array delay values matching standard Olympus/Evident equipment setups for direct hardware upload.