Free tools for working technicians
NDT Calculators
190 calculations across every NDT method, each with the governing formula, a worked example and the standard it comes from. Ultrasonic beam geometry, ToFD setup, phased array coverage, radiation safety, magnetic particle amperage, penetrant dwell, eddy current depth — and the certification arithmetic nobody enjoys doing twice.
Conventional UT — beam geometry, calibration, angle-beam trigonometry, thickness and corrosion.
Acoustic impedance
Specific acoustic impedance Z = ρ·c in MRayl, for compression or shear waves, from material density and velocity.
Compression or shearAngle beam sound path, surface distance and depth
Solves the first-leg angle-beam triangle — sound path, surface distance and depth — from any one of the three, and…
Shear wave FreeAttenuation coefficient from backwall echoes
Material attenuation in dB/mm from the amplitude difference between two backwall echoes, with the far-field beam-spread correction.
Compression or shearAxial and lateral resolution
Smallest separation two reflectors can have and still be seen as two — along the beam (from pulse length) and…
Compression or shearBeam diameter at range
Width of an unfocused beam at a given sound path from the divergence half-angle, for scan-plan coverage and index spacing.
Compression or shearBeam divergence angle
Half-angle and full-angle beam spread from sin θ = k·λ/D, with k selectable for the −6 dB, −20 dB or…
Compression or shearCorrosion rate and remaining life
Long-term and short-term corrosion rates from thickness history, and the remaining life to the minimum required thickness, following API 510,…
Compression waveCritical angles
First and second critical angles for a wedge on a test material, plus the smallest refracted shear angle that can…
Compression or shearCurved surface correction for angle beam on pipe
Exact sound path, central angle and arc surface distance for a shear beam scanned circumferentially from the outside of a…
Shear waveDAC curve level and indication assessment
Builds the distance amplitude correction curve from the reference reflector law plus material attenuation, then reports how many decibels an…
Compression or shearDecibel amplitude ratio
Convert between two screen heights and a dB difference, and find the resulting screen height after a stated gain change.
DGS / AVG equivalent reflector size
Sizes an indication as an equivalent flat disc reflector from a back-wall reference, using the far-field DGS relation together with…
Compression or shearElastic constants from ultrasonic velocity
Young's modulus, shear modulus, bulk modulus and Poisson's ratio from measured compression and shear velocities and density.
Compression or shearFocal spot size
−6 dB focal spot diameter of a focused probe, BD = 1.02·λ·F/D, with the near-field check that decides whether focusing…
Compression or shearFocal zone length
Depth range over which a focused beam stays within 6 dB of its peak: FZ = N·S_F²·2/(1 + 0.5·S_F), with…
Compression or shearHigh temperature thickness correction
Corrects a wall thickness reading taken on hot equipment for the fall in compression-wave velocity with temperature — about 1…
Compression waveImmersion water path
Minimum water path to keep interface multiples clear of the part, the steel path a water path is equivalent to,…
Compression or shearInterface reflection and transmission coefficients
Pressure and energy reflection/transmission coefficients at a plane interface at normal incidence, from the density and velocity of both media.
Compression waveLamb wave A0 and S0 velocities in steel plate
Phase and group velocity of the fundamental antisymmetric and symmetric Lamb modes in steel plate against frequency-thickness product, with wavelength…
Maximum pulse repetition frequency
Highest PRF that will not produce ghost (wrap-around) echoes for a given maximum sound path, and the unambiguous range at…
Compression or shearMinimum required thickness — ASME VIII UG-27 and B31.3
Pressure design thickness for cylindrical shells and straight pipe to ASME VIII Division 1 UG-27 or ASME B31.3, with the…
Near field length, circular probe
Near-field (Fresnel zone) length N = D²f/4c for a circular single-crystal probe, with the wavelength it is built on.
Compression or shear FreeNear field length, rectangular probe
Near-field length for a rectangular or square element, N = k·L²/4λ, with k interpolated from the short/long aspect ratio.
Compression or shearNext inspection interval from remaining life
Sets the next thickness inspection interval as the smaller of the code fraction of remaining life and the code maximum,…
Rayleigh (surface) wave velocity
Surface wave velocity from the shear velocity and Poisson's ratio, with the Rayleigh wavelength and its effective penetration depth.
Surface (Rayleigh) waveReference reflector equivalence: FBH, SDH and notch
Compares flat-bottomed holes, side-drilled holes and notches by their far-field echo relative to a plane back wall, and converts each…
Compression or shearSecond, third and fourth leg depth
Folds an angle-beam sound path back through the wall to give the true depth and leg number for reflectors beyond…
Shear waveSkip distance and leg sound path
Half-skip and full-skip surface distances and the shear-wave sound path per leg, giving the scanning band needed to sweep a…
Shear waveSnell's law refraction angles
Refracted longitudinal and shear angles in the test material for a given incident angle in the wedge, using sin θ₁/c₁…
Compression or shearThickness grid statistics and projection
Minimum, mean, range and standard deviation for up to eight readings at a condition monitoring location, with the wall projected…
Compression waveTransfer correction
Gain correction between the reference block and the component, with a sound-path spread term and the resulting total scanning gain.
Ultrasonic thickness from time of flight
Converts a measured pulse-echo time of flight into remaining wall thickness using the compression-wave velocity, with the probe zero (delay)…
Compression waveUltrasonic wavelength
Wavelength, half-wavelength and pulse period from material velocity and probe frequency, for compression or shear waves.
Compression or shearVelocity and probe zero from a calibration block
Derives the true compression-wave velocity and the probe zero offset from timed echoes on one or two known thicknesses of…
Compression waveVelocity correction for temperature
Sound velocity at an elevated temperature, the thickness over-read that results from ignoring it, and the corrected wall reading.
Compression waveWedge delay and shear velocity from an IIW block
Derives the angle-beam wedge delay and the true shear velocity from timed radius echoes on an IIW V1 or V2…
Shear waveToFD setup and depth arithmetic. Compression wave throughout.
ToFD backwall arrival time
Predicts the backwall reflection time on a ToFD A-scan and the time window between the lateral wave and the backwall.
Compression waveToFD backwall dead zone
Calculates how close to the far surface a diffracted signal can be resolved before it is masked by the backwall…
Compression waveToFD depth error from PCS error
Shows how much depth error an error in the probe centre separation produces at a given flaw depth, and the…
Compression waveToFD depth from time of flight
Converts a measured ToFD arrival time into the depth of the diffracting tip below the scanning surface.
Compression wave FreeToFD depth resolution against depth
Converts a timing uncertainty into a depth uncertainty at a stated depth, using the gradient of the ToFD time-to-depth curve.
Compression waveToFD depth zone division
Splits a thick wall into ToFD depth zones and gives the PCS and arrival-time window for the selected zone.
Compression waveToFD flaw through-wall height
Sizes a planar flaw by converting the upper and lower tip diffraction times to depths and taking the difference.
Compression waveToFD gate start and width
Derives the digitising gate start, end and width from the predicted lateral wave and backwall arrival times plus operator margins.
Compression waveToFD lateral wave arrival time
Predicts where the lateral wave should appear on the ToFD A-scan for a given probe centre separation, velocity and probe…
Compression waveToFD near-surface dead zone
Calculates the depth below the scanning surface within which diffracted signals are masked by the lateral wave pulse.
Compression waveToFD off-axis depth error
Gives the apparent depth of a diffractor that is not on the centreline between the probes, for an offset across…
Compression waveToFD PCS for a target crossing depth
Sets the probe centre separation so the two ToFD beam axes intersect at a chosen depth in the wall.
Compression waveToFD PCS from the two-thirds wall rule
Gives the standard single-setup ToFD probe centre separation for beams crossing at two-thirds of the wall thickness.
Compression waveToFD probe delay and velocity from lateral wave and backwall
Solves the material compression velocity and the total wedge delay from the measured lateral wave and backwall arrival times on…
Compression waveToFD probe selection by wall thickness
Recommends ToFD probe frequency, beam angle, element size and number of setups for a given wall thickness, with the resulting…
Compression waveToFD scan increment and speed
Checks the ToFD scan increment against the allowed value and the encoder resolution, and gives the maximum scan speed for…
Compression waveAperture, steering, focusing and the acquisition arithmetic behind an encoded scan.
Beam width at the focus
The −6 dB beam width at a focal depth, compared with the narrowest width the same aperture reaches unfocused.
Compression or shearCurved surface wedge fit
Gap between a flat wedge and a curved surface, whether contouring is required, and the pipe size band a contoured…
Dead element tolerance
Checks inactive elements in an aperture against the usual 25 percent and no-two-adjacent limits, with the resulting sensitivity loss.
Depth of field of a focused beam
Axial extent of the −6 dB focal zone of a focused array beam, from the normalised focal depth.
Compression or shearEncoder resolution
Pulses per millimetre for a wheel encoder from wheel diameter, pulses per revolution and quadrature multiplier.
First element height, wedge delay and exit point
Wedge path, wedge delay and beam exit point for an active group on an angle wedge, from the first element…
Compression waveFocal law delays
Per-element transmit delay for a direct contact or immersion linear array steering and focusing at a chosen angle and depth.
Compression or shearGrating lobe angle
Angle at which grating lobes appear for a given pitch and steering angle, so ghost indications can be recognised and…
Compression or shearGrating lobe free pitch
Maximum element pitch that keeps grating lobes out of the propagating field over a required steering range.
Compression or shearLinear (E-scan) law count
Number of focal laws, index resolution and coverage width for an electronic raster scan stepping a fixed aperture along the…
Maximum focal depth
Checks a requested focal depth against the near field length of the aperture and gives the element count needed to…
Compression or shearMaximum PAUT scan speed
Highest encoded scan speed that still records every acquisition point, from the frame rate and the scan axis resolution.
FreePassive aperture beam spread
Elevation beam spread and width of a linear array, set by the fixed passive aperture that cannot be steered or…
Compression or shearPAUT acquisition rate
Frames per second from the pulse repetition frequency, law count and averaging, with the PRF ceiling set by the sound…
Compression or shearPAUT active aperture
Active aperture size of a phased array group from element count and pitch, with the aperture expressed in wavelengths.
Compression or shearPAUT data file size
Raw file size of an encoded phased array scan from samples per A-scan, law count, scan length and resolution.
Compression or shearPAUT near field length
Near field length of a rectangular phased array aperture using the k factor for the active to passive aperture ratio.
Compression or shearPAUT steering limit
Maximum useful steering angle set by the directivity of a single element, and the sensitivity lost at a chosen steering…
Compression or shearPAUT wedge geometry and refracted angle range
Natural refracted angle of a phased array wedge and the refracted angle range reachable with a given amount of electronic…
Compression or shearPAUT weld bevel coverage
Bevel geometry, the angle that strikes the fusion face square, and the probe index positions needed to cover root and…
Shear waveReference sensitivity and scanning gain
Gain that puts a reference reflector at the required screen height, plus transfer correction and the code scanning gain addition.
Scan line count and index offsets
Number of parallel scan lines and the index offset between them to cover a required width with a specified overlap.
Sectorial scan law count
Number of focal laws in a sectorial sweep from the angular range and step, including multiple focal depths and groups.
Skip distance and probe stand-off
Half skip, full skip and the exit point stand-off needed to place a shear beam on a reflector at a…
Shear waveTCG point gain
Gain needed at a TCG point relative to the reference point, from the far field reflector law and material attenuation,…
Compression or shearTFM amplitude fidelity
Worst case amplitude fidelity loss from TFM grid sampling, and the coarsest pixel pitch that still meets a 2 dB…
Compression or shearTFM frame rate
TFM frame rate from the delay-and-sum load and from the full matrix capture time, showing which of the two is…
TFM grid sizing
Maximum TFM pixel pitch from the wavelength, the resulting grid dimensions for a zone, and the delay-and-sum load per frame.
Compression or shearWedge attenuation and steering loss
Extra gain needed at a steered refracted angle relative to the wedge natural angle, from the longer wedge path and…
Shear waveExposure geometry, technique and the radiation safety calculations that keep a shot legal.
ALARA exposure planner
Combines source decay, inverse square distance and shield attenuation to give the dose rate at a work position, the dose…
Barrier distance
Finds the distance at which an unshielded gamma source falls to a chosen dose-rate limit, giving the radius of the…
Basic spatial resolution from duplex wire
Converts the first unresolved duplex wire pair on an ISO 19232-5 IQI into basic spatial resolution and image unsharpness, and…
Circumferential weld exposure count
Works out how many exposures are needed to cover a girth weld for panoramic, single-wall and double-wall techniques, from the…
Coverage angle per film
Works out how much of a pipe circumference one film covers, how many films wrap the joint, and whether film…
Detector pixel size versus IQI wire
Translates detector pixel pitch and type into basic spatial resolution at the object, the finest IQI wire that can realistically…
Dose rate at distance
Calculates the unshielded gamma dose rate at any distance from a source using D = Gamma x A / d…
Elliptical DWDI source offset
Calculates the axial source offset needed to separate the source-side and film-side weld images by a chosen amount on a…
Exposure transfer
Transfers a known good exposure to a new thickness, distance, film class or source activity using inverse square, half value…
Film density adjustment
Corrects an exposure time to move a radiograph from the density it achieved to the density you want, using the…
Gamma exposure time
Converts an exposure factor from a gamma exposure chart into a shot time for the actual source activity, distance and…
Gamma isotope library
Reference data for the six industrial gamma sources - half-life, gamma constant, mean photon energy and practical steel range -…
Geometric unsharpness
Calculates radiographic geometric unsharpness Ug from focal spot size, object-to-film distance and source-to-object distance, and checks it against the ASME…
Half value layer and tenth value layer
Half value layer and tenth value layer for the industrial gamma sources in lead, steel, concrete and tungsten, with the…
Inverse square law
Converts exposure time and dose rate between two distances using the inverse square law, for both exposure planning and radiation…
IQI selection
Selects the required hole-type and wire-type image quality indicator for a material thickness to ASME V T-276, with ASTM E747…
Lead screen and backscatter selection
Recommends front and back lead screen thicknesses for a given radiation quality and sets out the ASME V backscatter check.
Minimum SOD for pipe
Minimum source-to-object distance for panoramic, single-wall and double-wall pipe techniques, and whether the geometry available inside the pipe can meet…
Minimum source-to-object distance
Finds the shortest source-to-object distance that still keeps geometric unsharpness inside the ASME V T-274.2 limit for the material thickness.
Normalised signal-to-noise ratio
Normalises a measured signal-to-noise ratio to the ISO 17636-2 reference basic spatial resolution of 88.6 micrometres, and gives the measured…
Personnel dose tracker
Tracks an individual radiation worker against the 20 mSv annual average, the 50 mSv single-year ceiling and the 100 mSv…
Pipeline crawler positioning
Axial stopping tolerance for an internal crawler on a girth weld, the panoramic geometric unsharpness, and the travel and cycle…
Radiographic equivalence factors
Converts a thickness of any common engineering material into the steel-equivalent thickness for a given radiation energy, so a steel…
Radiographic magnification
Calculates projected image magnification from source-to-object and object-to-film distances, with the unsharpness penalty and the optimum magnification for a microfocus…
Radiographic sensitivity
Calculates achieved radiographic sensitivity as a percentage of material thickness from the finest wire or smallest hole visible on the…
Shielding thickness
Calculates the shield thickness needed to bring a gamma field down to a target dose rate, with an added half…
Source decay
Calculates the present activity of a gamma radiography source from its assay activity and the elapsed time, for any of…
FreeSource replacement date
Calculates how many days remain before a gamma source decays below a chosen working activity, and the exposure time penalty…
Stay time
Calculates how long a person may remain in a known dose-rate field before reaching a chosen dose allowance.
X-ray tube voltage selection
Gives the maximum permitted X-ray tube voltage for a steel-equivalent thickness and a lower starting kV that preserves radiographic contrast.
Amp-turns, prod spacing, central conductor coverage and field verification.
Cable wrap magnetisation
Current, number of turns, cable length and shot positions for longitudinal magnetisation by wrapping a flexible cable around a part.
Central conductor magnetisation
Current and rotation schedule for a centred or offset central conductor, including the effective inspection band of about four conductor…
Coil shot current, high fill factor
Ampere-turns and coil current for longitudinal magnetisation of a part that fills the coil, NI = 35 000/((L/D)+2).
Coil shot current, intermediate fill factor
Ampere-turns for a part in a coil whose bore area is between 2 and 10 times the part area, interpolated…
Coil shot current, low fill factor
Ampere-turns and coil current for longitudinal magnetisation of a part inside a low fill factor coil, NI = 45 000/(L/D).
FreeDemagnetisation steps and residual field
Number of reversing, decaying magnetising steps needed to bring a residual field below the acceptance limit, typically 3 G.
Direct circular magnetisation current
Head shot current for direct circular magnetisation at 300 to 800 A per inch (about 12 to 31 A/mm) of…
Effective L/D ratio for coil magnetisation
Effective diameter of a hollow or tubular part, D_eff = sqrt(OD² - ID²), and the resulting L/D ratio clamped to…
Magnetic field strength unit conversion
Converts a magnetic field reading between A/m, kA/m, oersted, gauss, millitesla and tesla, and checks it against the 30 to…
Magnetic particle bath concentration
Settling test result in mL per 100 mL against the 0.1 to 0.4 mL fluorescent and 1.2 to 2.4 mL…
Magnetising shot duty cycle
Minimum rest between magnetising shots for a stated duty cycle rating, with the continuous-method minimum shot duration and shot count.
Prod technique current and spacing
Magnetising current for the prod technique from prod spacing and material thickness, with the 50 to 200 mm spacing limits.
UV-A irradiance at working distance
Scales a measured UV-A irradiance to a different working distance by the inverse square law and checks it against the…
Yoke lifting power check
Checks a measured yoke lift against the code minimum - 4.5 kg (10 lb) for AC yokes and 18 kg…
Dwell and process timing by material, discontinuity type and temperature.
Developer dwell time
Developer dwell window from the penetrant dwell - half to twice that time, never less than 10 min - with…
Emulsification time
Nominal emulsification time windows for post-emulsifiable penetrants - 30 s to 2 min hydrophilic, 10 s to 3 min lipophilic…
Penetrant drying temperature limits
Checks part temperature during drying against the 71 °C (160 °F) ASTM limit or the 52 °C (125 °F) ASME…
Penetrant dwell time
Minimum penetrant and developer dwell times from ASME V Table T-672 by material and product form, with the standard temperature…
FreePenetrant inspection lighting verification
Checks measured lighting against the code requirements - 1000 µW/cm² UV-A with ambient white light at or below 20 lx…
Penetrant process timeline
Total elapsed time for a complete penetrant examination from pre-clean to post-clean, the earliest interpretation point, and throughput per hour…
Penetrant temperature qualification check
Checks part and penetrant temperature against the standard qualified range and shows how far outside it the process sits, which…
Penetrant wash parameters
Checks rinse water pressure and temperature against the 275 kPa (40 psi) and 10 to 40 °C limits, and flags…
Penetration depth, phase lag, frequency selection and conductivity.
Bobbin probe sizing for tube ID
Bobbin probe diameter range for a tube, sized to a target fill factor band (commonly 85 to 90 %), with…
Coil impedance and reactance
Inductive reactance, total impedance, phase angle and Q of an eddy current probe coil at the test frequency, plus the…
Conductivity and resistivity conversion
Convert between %IACS, conductivity in MS/m and resistivity in uohm.cm or nohm.m, using the International Annealed Copper Standard reference of…
Eddy current array coverage and pitch
Active coverage width of an eddy current array from element count, pitch and width, with pass count for a given…
Eddy current phase lag with depth
Phase lag of the eddy current at a given depth (57.3 degrees per standard depth of penetration), with the depths…
Fill factor and lift-off sensitivity
Fill factor for a bobbin or encircling coil from coil and bore diameters, with radial clearance and the loss of…
Limit frequency for rod and tube testing
Forster limit (characteristic) frequency for an encircling coil on a rod or tube, the frequency ratio f/fg at the test…
Remote field transition and probe spacing
Exciter-to-detector spacing for remote field testing of ferromagnetic tube, with the double-transit wall phase lag and attenuation at the chosen…
Scan speed and sampling rate
Maximum eddy current scan speed for a required number of samples across the smallest reportable flaw, with the sample spacing…
Standard depth of penetration
Eddy current standard depth of penetration (skin depth) from resistivity, relative permeability and test frequency, with field strength at the…
FreeTest frequency for a target depth
Eddy current test frequency needed to place a target depth at a chosen number of standard depths of penetration, with…
Tube wall loss from phase angle
Percentage through-wall loss and remaining wall in a tube, read from the measured signal phase angle by interpolating between the…
Acoustic emission, leak testing, visual, thermography, guided wave, MFL and civil NDT.
AE Felicity ratio
Divides the load at which significant acoustic emission restarts by the previous maximum load, and compares the result against the…
AE linear source location
Locates an acoustic emission source between two sensors from the difference in arrival time and the measured wave velocity.
AE planar location and sensor spacing
Gives the hyperbolic locus for one sensor pair and sets the maximum array spacing from the measured attenuation of the…
Borescope field of view and resolvable detail
Projects a borescope's angular field of view onto the target at working distance and gives the smallest feature the sensor…
Concrete ultrasonic pulse velocity
Converts path length and transit time into pulse velocity, classifies the concrete quality and estimates the dynamic modulus of elasticity.
Compression waveDirect visual examination conditions
Checks viewing distance, viewing angle and surface illuminance against the direct visual examination requirements of ASME V Article 9, ISO…
Dry film thickness acceptance
Applies the ISO 19840 surface profile correction to gauge readings and tests them against the mean, 80% minimum, 20% count…
Emissivity and reflected temperature correction
Corrects a radiometric temperature reading for surface emissivity, reflected apparent temperature and atmospheric transmission, and shows how sensitive the result…
GPR velocity and target depth
Converts two-way travel time to target depth using the wave velocity from relative permittivity, and back-calculates permittivity from a target…
Guided wave test range from attenuation
Converts the available amplitude budget and the pipe's attenuation per metre into a realistic guided wave inspection range, with the…
Compression or shearHalf-cell potential corrosion probability
Converts a half-cell potential reading to the copper/copper sulphate scale and reads the ASTM C876 corrosion probability, with the thresholds…
Helium test detectability
Scales a leak detector's minimum detectable leak rate by the helium partial pressure actually present, giving the smallest real leak…
Leak rate unit converter
Converts a leak rate between mbar·L/s, Pa·m³/s, atm·cc/s, Torr·L/s, sccm and scfh so acceptance criteria and instrument readings can be…
FreeLock-in thermography diffusion length
Gives the thermal diffusion length for a modulation frequency and material, and the frequency needed to probe to a required…
MFL saturation and scanning speed limit
Compares the flux density an MFL magnetiser achieves at scanning speed with the level needed for saturation, using the magnetic…
NDT unit converter hub
One-stop conversions for the units NDT actually uses: length and thickness, pressure, temperature, velocity, density, force, stress, decibels, activity, dose…
FreePressure decay leak rate
Turns a pressure drop over a hold period into a leak rate, correcting the final pressure for the change in…
Pressure test pressure and hold time
Applies the code multiplier and temperature stress ratio to a design pressure to give the required hydrostatic or pneumatic test…
Pulsed thermography depth and observation time
Relates defect depth to the thermal diffusion time for a material, giving the observation window needed and the depth reachable…
Rebound hammer strength estimate
Applies the impact-direction correction to a rebound number and converts it to an indicative compressive strength, or to a site-calibrated…
Thermal camera spot size and IFOV
Projects a thermal camera's instantaneous field of view onto the target to give the spot size at distance, and the…
Tracer gas leak rate correction
Converts a leak rate measured with one gas into the equivalent rate for another, using the molecular-flow square-root-of-molar-mass law or…
Heat input, carbon equivalent, hardness conversion and ferrite number.
Brinell hardness from indentation diameter
Converts a measured Brinell indentation diameter, ball diameter and test force into HBW, with the ISO 6506-1 indentation-ratio and load-diameter…
Carbon equivalent CE(IIW), Pcm and CET
Calculates the IIW carbon equivalent, the Ito-Bessyo Pcm cracking parameter and the EN 1011-2 CET from steel chemistry, with a…
FreeHardness scale conversion
Converts between HV, HBW, HRC, HRB and HK for non-austenitic steels using the ASTM E140 conversion tables, with an indicative…
FreeLarson-Miller / Hollomon-Jaffe tempering parameter
Computes the Larson-Miller tempering parameter for a heat treatment and converts a soak at one temperature to the equivalent time…
Pipe schedule dimensions and weights
Looks up outside diameter, wall thickness, bore, metal area, mass per metre and contained volume for ASME B36.10M and B36.19M…
Preheat temperature to EN 1011-2 Method B
Calculates minimum preheat for ferritic steel from CET, combined thickness, diffusible hydrogen and heat input using the EN 1011-2 Method…
Vickers hardness from diagonal measurement
Converts the two measured diagonals of a Vickers indentation and the test force into HV, with the ISO 6507-1 diagonal-difference…
Weld metal volume and filler consumption
Calculates groove cross-section, deposited weld metal mass and the filler quantity to purchase, from joint geometry, weld length and process…
Welding arc energy and heat input
Calculates arc energy and heat input in kJ/mm from arc voltage, current and travel speed, applying the EN 1011-1 thermal…
WRC-1992 chromium and nickel equivalents
Computes the WRC-1992 Creq and Nieq from weld metal chemistry and gives the predicted solidification mode, ready to plot on…
Minimum thickness, MAWP, remaining strength and Level 1 FFS screening.
API 579 Level 1 general metal loss
Runs the API 579-1 Part 4 Level 1 assessment for general metal loss: length for thickness averaging, the two acceptance…
API 579 Level 1 local thin area and pitting
Screens a local thin area or a deep pit in a cylindrical shell against the API 579-1 Part 5 Level…
B31G remaining strength of corroded pipe
Estimates the failure pressure and safe operating pressure of a corroded pipeline by the original ASME B31G method and the…
BS 7910 failure assessment diagram
Plots an assessment point on the BS 7910 Option 1 failure assessment diagram and returns the utilisation against the fracture…
Hydrostatic and pneumatic test pressure
Calculates the code test pressure for ASME VIII-1, B31.3 and B31.1, applies the allowable-stress ratio, and checks the resulting hoop…
MAWP and required thickness for a cylindrical shell
Calculates the maximum allowable working pressure and the required thickness of a cylindrical shell or sphere from ASME VIII-1 UG-27,…
RSTRENG effective area remaining strength
Calculates failure and safe pressure for corroded pipe from the measured effective metal-loss area of a river-bottom profile, the RSTRENG…
Weld flaw acceptance limits for elongated indications
Compares a measured elongated slag or tungsten indication against the workmanship acceptance limits of ASME VIII-1 UW-51, ASME B31.3 and…
Qualification hours, exam grades, recertification dates, dose tracking and unit conversion.
ISO 9712 training hours and industrial experience
Minimum training hours and industrial experience months required for ISO 9712 certification by method and level, including the direct-entry summation…
NDT composite examination grade
Composite grade from general, specific and practical examination scores, with the 70 % per-part and 80 % composite pass rules…
Radiation dose record and five-year headroom
Running five-year effective dose total against the 20 mSv/year average and 50 mSv single-year limits, with remaining headroom and a…
Recertification and vision test due dates
Expiry month of a five-year NDT certification, months remaining, when the recertification window opens, and when the annual near-vision test…
SNT-TC-1A training and experience hours
Recommended initial training hours and work experience by NDT method and level to SNT-TC-1A, with shortfall against hours already logged.
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