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NDT Calculators
193 calculations across every NDT method — each with the governing formula, a worked example and the standard it comes from. 12 are free to use for everyone; membership unlocks them all.
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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 shear UT FreeAngle 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…
Shear wave UTAttenuation 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 shear UTAxial and lateral resolution
Smallest separation two reflectors can have and still be seen as two — along the beam (from pulse…
Compression or shear UTBeam diameter at range
Width of an unfocused beam at a given sound path from the divergence half-angle, for scan-plan coverage and…
Compression or shear UTBeam divergence angle
Half-angle and full-angle beam spread from sin θ = k·λ/D, with k selectable for the −6 dB, −20…
Compression or shear UTCorrosion rate and remaining life
Long-term and short-term corrosion rates from thickness history, and the remaining life to the minimum required thickness, following…
Compression wave UTCritical angles
First and second critical angles for a wedge on a test material, plus the smallest refracted shear angle…
Compression or shear UTCurved 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…
Shear wave UTDAC curve level and indication assessment
Builds the distance amplitude correction curve from the reference reflector law plus material attenuation, then reports how many…
Compression or shear UTDecibel amplitude ratio
Convert between two screen heights and a dB difference, and find the resulting screen height after a stated…
UTDGS / AVG equivalent reflector size
Sizes an indication as an equivalent flat disc reflector from a back-wall reference, using the far-field DGS relation…
Compression or shear UTElastic 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 shear UTFocal spot size
−6 dB focal spot diameter of a focused probe, BD = 1.02·λ·F/D, with the near-field check that decides…
Compression or shear UTFocal zone length
Depth range over which a focused beam stays within 6 dB of its peak: FZ = N·S_F²·2/(1 +…
Compression or shear UTHigh temperature thickness correction
Corrects a wall thickness reading taken on hot equipment for the fall in compression-wave velocity with temperature —…
Compression wave UTImmersion water path
Minimum water path to keep interface multiples clear of the part, the steel path a water path is…
Compression or shear UTInterface reflection and transmission coefficients
Pressure and energy reflection/transmission coefficients at a plane interface at normal incidence, from the density and velocity of…
Compression wave UTLamb 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,…
UTMaximum pulse repetition frequency
Highest PRF that will not produce ghost (wrap-around) echoes for a given maximum sound path, and the unambiguous…
Compression or shear UTMinimum 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,…
UT FreeNear field length, circular probe
Near-field (Fresnel zone) length N = D²f/4c for a circular single-crystal probe, with the wavelength it is built…
Compression or shear UTNear 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…
Compression or shear UTNext inspection interval from remaining life
Sets the next thickness inspection interval as the smaller of the code fraction of remaining life and the…
UTRayleigh (surface) wave velocity
Surface wave velocity from the shear velocity and Poisson's ratio, with the Rayleigh wavelength and its effective penetration…
Surface (Rayleigh) wave UTReference 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…
Compression or shear UTSecond, third and fourth leg depth
Folds an angle-beam sound path back through the wall to give the true depth and leg number for…
Shear wave UTSkip 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…
Shear wave UTSnell's law refraction angles
Refracted longitudinal and shear angles in the test material for a given incident angle in the wedge, using…
Compression or shear UTThickness grid statistics and projection
Minimum, mean, range and standard deviation for up to eight readings at a condition monitoring location, with the…
Compression wave UTTransfer correction
Gain correction between the reference block and the component, with a sound-path spread term and the resulting total…
UTUltrasonic 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…
Compression wave UTUltrasonic wavelength
Wavelength, half-wavelength and pulse period from material velocity and probe frequency, for compression or shear waves.
Compression or shear UTVelocity 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…
Compression wave UTVelocity correction for temperature
Sound velocity at an elevated temperature, the thickness over-read that results from ignoring it, and the corrected wall…
Compression wave UTWedge 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…
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…
Compression wave TOFDToFD backwall dead zone
Calculates how close to the far surface a diffracted signal can be resolved before it is masked by…
Compression wave TOFDToFD beam spread and wall coverage
Computes the beam divergence from the probe crystal diameter and frequency, and the band of wall depth a…
Compression wave TOFDToFD depth error from PCS error
Shows how much depth error an error in the probe centre separation produces at a given flaw depth,…
Compression wave TOFD FreeToFD depth from time of flight
Converts a measured ToFD arrival time into the depth of the diffracting tip below the scanning surface.
Compression wave TOFDToFD depth resolution against depth
Converts a timing uncertainty into a depth uncertainty at a stated depth, using the gradient of the ToFD…
Compression wave TOFDToFD depth zone division
Splits a thick wall into ToFD depth zones and gives the PCS and arrival-time window for the selected…
Compression wave TOFDToFD flaw through-wall height
Sizes a planar flaw by converting the upper and lower tip diffraction times to depths and taking the…
Compression wave TOFDToFD gate start and width
Derives the digitising gate start, end and width from the predicted lateral wave and backwall arrival times plus…
Compression wave TOFDToFD lateral wave arrival time
Predicts where the lateral wave should appear on the ToFD A-scan for a given probe centre separation, velocity…
Compression wave TOFDToFD near-surface dead zone
Calculates the depth below the scanning surface within which diffracted signals are masked by the lateral wave pulse.
Compression wave TOFDToFD off-axis depth error
Gives the apparent depth of a diffractor that is not on the centreline between the probes, for an…
Compression wave TOFDToFD PCS for a target crossing depth
Sets the probe centre separation so the two ToFD beam axes intersect at a chosen depth in the…
Compression wave TOFDToFD 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 wave TOFDToFD 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…
Compression wave TOFDToFD probe selection by wall thickness
Recommends ToFD probe frequency, beam angle, element size and number of setups for a given wall thickness, with…
Compression wave TOFDToFD scan increment and speed
Checks the ToFD scan increment against the allowed value and the encoder resolution, and gives the maximum scan…
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…
Compression or shear PAUTCurved surface wedge fit
Gap between a flat wedge and a curved surface, whether contouring is required, and the pipe size band…
PAUTDead element tolerance
Checks inactive elements in an aperture against the usual 25 percent and no-two-adjacent limits, with the resulting sensitivity…
PAUTDepth 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 shear PAUTEncoder resolution
Pulses per millimetre for a wheel encoder from wheel diameter, pulses per revolution and quadrature multiplier.
PAUTFirst 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…
Compression wave PAUTFocal law delays
Per-element transmit delay for a direct contact or immersion linear array steering and focusing at a chosen angle…
Compression or shear PAUTGrating lobe angle
Angle at which grating lobes appear for a given pitch and steering angle, so ghost indications can be…
Compression or shear PAUTGrating lobe free pitch
Maximum element pitch that keeps grating lobes out of the propagating field over a required steering range.
Compression or shear PAUTLinear (E-scan) law count
Number of focal laws, index resolution and coverage width for an electronic raster scan stepping a fixed aperture…
PAUTMaximum focal depth
Checks a requested focal depth against the near field length of the aperture and gives the element count…
Compression or shear PAUT FreeMaximum PAUT scan speed
Highest encoded scan speed that still records every acquisition point, from the frame rate and the scan axis…
PAUTPassive aperture beam spread
Elevation beam spread and width of a linear array, set by the fixed passive aperture that cannot be…
Compression or shear PAUTPAUT acquisition rate
Frames per second from the pulse repetition frequency, law count and averaging, with the PRF ceiling set by…
Compression or shear PAUTPAUT active aperture
Active aperture size of a phased array group from element count and pitch, with the aperture expressed in…
Compression or shear PAUTPAUT data file size
Raw file size of an encoded phased array scan from samples per A-scan, law count, scan length and…
Compression or shear PAUTPAUT near field length
Near field length of a rectangular phased array aperture using the k factor for the active to passive…
Compression or shear PAUTPAUT steering limit
Maximum useful steering angle set by the directivity of a single element, and the sensitivity lost at a…
Compression or shear PAUTPAUT wedge geometry and refracted angle range
Natural refracted angle of a phased array wedge and the refracted angle range reachable with a given amount…
Compression or shear PAUTPAUT weld bevel coverage
Bevel geometry, the angle that strikes the fusion face square, and the probe index positions needed to cover…
Shear wave PAUTReference sensitivity and scanning gain
Gain that puts a reference reflector at the required screen height, plus transfer correction and the code scanning…
PAUTScan line count and index offsets
Number of parallel scan lines and the index offset between them to cover a required width with a…
PAUTSectorial scan law count
Number of focal laws in a sectorial sweep from the angular range and step, including multiple focal depths…
PAUTSkip distance and probe stand-off
Half skip, full skip and the exit point stand-off needed to place a shear beam on a reflector…
Shear wave PAUTTCG point gain
Gain needed at a TCG point relative to the reference point, from the far field reflector law and…
Compression or shear PAUTTFM amplitude fidelity
Worst case amplitude fidelity loss from TFM grid sampling, and the coarsest pixel pitch that still meets a…
Compression or shear PAUTTFM frame rate
TFM frame rate from the delay-and-sum load and from the full matrix capture time, showing which of the…
PAUTTFM grid sizing
Maximum TFM pixel pitch from the wavelength, the resulting grid dimensions for a zone, and the delay-and-sum load…
Compression or shear PAUTWedge attenuation and steering loss
Extra gain needed at a steered refracted angle relative to the wedge natural angle, from the longer wedge…
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,…
RTBarrier distance
Finds the distance at which an unshielded gamma source falls to a chosen dose-rate limit, giving the radius…
RTBasic spatial resolution from duplex wire
Converts the first unresolved duplex wire pair on an ISO 19232-5 IQI into basic spatial resolution and image…
RTCircumferential weld exposure count
Works out how many exposures are needed to cover a girth weld for panoramic, single-wall and double-wall techniques,…
RTCoverage angle per film
Works out how much of a pipe circumference one film covers, how many films wrap the joint, and…
RTDetector pixel size versus IQI wire
Translates detector pixel pitch and type into basic spatial resolution at the object, the finest IQI wire that…
RTDose rate at distance
Calculates the unshielded gamma dose rate at any distance from a source using D = Gamma x A…
RTElliptical DWDI source offset
Calculates the axial source offset needed to separate the source-side and film-side weld images by a chosen amount…
RTExposure transfer
Transfers a known good exposure to a new thickness, distance, film class or source activity using inverse square,…
RTFilm density adjustment
Corrects an exposure time to move a radiograph from the density it achieved to the density you want,…
RTGamma exposure time
Converts an exposure factor from a gamma exposure chart into a shot time for the actual source activity,…
RTGamma isotope library
Reference data for the six industrial gamma sources - half-life, gamma constant, mean photon energy and practical steel…
RTGeometric unsharpness
Calculates radiographic geometric unsharpness Ug from focal spot size, object-to-film distance and source-to-object distance, and checks it against…
RTHalf value layer and tenth value layer
Half value layer and tenth value layer for the industrial gamma sources in lead, steel, concrete and tungsten,…
RTInverse square law
Converts exposure time and dose rate between two distances using the inverse square law, for both exposure planning…
RTIQI selection
Selects the required hole-type and wire-type image quality indicator for a material thickness to ASME V T-276, with…
RTLead screen and backscatter selection
Recommends front and back lead screen thicknesses for a given radiation quality and sets out the ASME V…
RTMinimum 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…
RTMinimum 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…
RTNormalised 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…
RTPersonnel dose tracker
Tracks an individual radiation worker against the 20 mSv annual average, the 50 mSv single-year ceiling and the…
RTPipeline crawler positioning
Axial stopping tolerance for an internal crawler on a girth weld, the panoramic geometric unsharpness, and the travel…
RTRadiographic equivalence factors
Converts a thickness of any common engineering material into the steel-equivalent thickness for a given radiation energy, so…
RTRadiographic magnification
Calculates projected image magnification from source-to-object and object-to-film distances, with the unsharpness penalty and the optimum magnification for…
RTRadiographic sensitivity
Calculates achieved radiographic sensitivity as a percentage of material thickness from the finest wire or smallest hole visible…
RTShielding thickness
Calculates the shield thickness needed to bring a gamma field down to a target dose rate, with an…
RT FreeSource decay
Calculates the present activity of a gamma radiography source from its assay activity and the elapsed time, for…
RTSource replacement date
Calculates how many days remain before a gamma source decays below a chosen working activity, and the exposure…
RTStay time
Calculates how long a person may remain in a known dose-rate field before reaching a chosen dose allowance.
RTX-ray tube voltage selection
Gives the maximum permitted X-ray tube voltage for a steel-equivalent thickness and a lower starting kV that preserves…
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…
MTCentral conductor magnetisation
Current and rotation schedule for a centred or offset central conductor, including the effective inspection band of about…
MTCoil 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).
MTCoil shot current, intermediate fill factor
Ampere-turns for a part in a coil whose bore area is between 2 and 10 times the part…
MT FreeCoil shot current, low fill factor
Ampere-turns and coil current for longitudinal magnetisation in a low fill factor coil - part against the coil…
MTDemagnetisation steps and residual field
Number of reversing, decaying magnetising steps needed to bring a residual field below the acceptance limit, typically 3…
MTDirect circular magnetisation current
Head shot current for direct circular magnetisation at 300 to 800 A per inch (about 12 to 31…
MTEffective 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…
MTMagnetic field strength unit conversion
Converts a magnetic field reading between A/m, kA/m, oersted, gauss, millitesla and tesla, and checks it against the…
MTMagnetic particle bath concentration
Settling test result in mL per 100 mL against the 0.1 to 0.4 mL fluorescent and 1.2 to…
MTMagnetising shot duty cycle
Minimum rest between magnetising shots for a stated duty cycle rating, with the continuous-method minimum shot duration and…
MTProd technique current and spacing
Magnetising current for the prod technique from prod spacing and material thickness, with the 50 to 200 mm…
MTUV-A irradiance at working distance
Scales a measured UV-A irradiance to a different working distance by the inverse square law and checks it…
MTYoke lifting power check
Checks a measured yoke lift against the code minimum - 4.5 kg (10 lb) for AC yokes and…
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…
PTEmulsification time
Nominal emulsification time windows for post-emulsifiable penetrants - 30 s to 2 min hydrophilic, 10 s to 3…
PTPenetrant drying temperature limits
Checks part temperature during drying against the 71 °C (160 °F) ASTM limit or the 52 °C (125…
PT FreePenetrant dwell time
Minimum penetrant and developer dwell times from ASME V Table T-672 by material and product form, with the…
PTPenetrant inspection lighting verification
Checks measured lighting against the code requirements - 1000 µW/cm² UV-A with ambient white light at or below…
PTPenetrant process timeline
Total elapsed time for a complete penetrant examination from pre-clean to post-clean, the earliest interpretation point, and throughput…
PTPenetrant temperature qualification check
Checks part and penetrant temperature against the standard qualified range and shows how far outside it the process…
PTPenetrant wash parameters
Checks rinse water pressure and temperature against the 275 kPa (40 psi) and 10 to 40 °C limits,…
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…
ETCoil impedance and reactance
Inductive reactance, total impedance, phase angle and Q of an eddy current probe coil at the test frequency,…
ETConductivity and resistivity conversion
Convert between %IACS, conductivity in MS/m and resistivity in uohm.cm or nohm.m, correcting the reading to the 20…
ETEddy current array coverage and pitch
Active coverage width of an eddy current array from element count, pitch and width, with pass count for…
ETEddy current phase lag with depth
Phase lag of the eddy current at a given depth (57.3 degrees per standard depth of penetration), with…
ETFill factor and lift-off sensitivity
Fill factor for a bobbin or encircling coil from coil and bore diameters, with radial clearance and the…
ETLimit 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…
ETRemote 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…
ETScan speed and sampling rate
Maximum eddy current scan speed for a required number of samples across the smallest reportable flaw, with the…
ET FreeStandard depth of penetration
Eddy current standard depth of penetration (skin depth) from resistivity, relative permeability and test frequency, with field strength…
ETTest frequency for a target depth
Eddy current test frequency needed to place a target depth at a chosen number of standard depths of…
ETTube wall loss from phase angle
Percentage through-wall loss and remaining wall in a tube, read from the measured signal phase angle by interpolating…
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…
OMAE linear source location
Locates an acoustic emission source between two sensors from the difference in arrival time and the measured wave…
OMAE planar location and sensor spacing
Gives the hyperbolic locus for one sensor pair and sets the maximum array spacing from the measured attenuation…
OMBorescope 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…
OMConcrete ultrasonic pulse velocity
Converts path length and transit time into pulse velocity, classifies the concrete quality and estimates the dynamic modulus…
Compression wave OMDirect visual examination conditions
Checks viewing distance, viewing angle and surface illuminance against the direct visual examination requirements of ASME V Article…
OMDry film thickness acceptance
Applies the ISO 19840 surface profile correction to gauge readings and tests them against the mean, 80% minimum,…
OMEmissivity and reflected temperature correction
Corrects a radiometric temperature reading for surface emissivity, reflected apparent temperature and atmospheric transmission, and shows how sensitive…
OMGPR velocity and target depth
Converts two-way travel time to target depth using the wave velocity from relative permittivity, and back-calculates permittivity from…
OMGuided wave test range from attenuation
Converts the available amplitude budget and the pipe's attenuation per metre into a realistic guided wave inspection range,…
Compression or shear OMHalf-cell potential corrosion probability
Converts a half-cell potential reading to the copper/copper sulphate scale and reads the ASTM C876 corrosion probability, with…
OMHelium test detectability
Scales a leak detector's minimum detectable leak rate by the helium partial pressure actually present, giving the smallest…
OM FreeLeak 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…
OMLock-in thermography diffusion length
Gives the thermal diffusion length for a modulation frequency and material, and the frequency needed to probe to…
OMMFL saturation and scanning speed limit
Compares the flux density an MFL magnetiser achieves at scanning speed with the level needed for saturation, using…
OM FreeNDT unit converter hub
One-stop conversions for the units NDT actually uses: length and thickness, pressure, temperature, velocity, density, force, stress, decibels,…
OMPressure decay leak rate
Turns a pressure drop over a hold period into a leak rate, correcting the final pressure for the…
OMPressure test pressure and hold time
Applies the code multiplier and temperature stress ratio to a design pressure to give the required hydrostatic or…
OMPulsed thermography depth and observation time
Relates defect depth to the thermal diffusion time for a material, giving the observation window needed and the…
OMRebound hammer strength estimate
Applies the impact-direction correction to a rebound number and converts it to an indicative compressive strength, or to…
OMThermal camera spot size and IFOV
Projects a thermal camera's instantaneous field of view onto the target to give the spot size at distance,…
OMTracer 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…
OMUPV surface crack depth
Estimates the depth of a surface-breaking crack in concrete from two indirect ultrasonic transit times measured across it…
Compression waveHeat 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…
MAT FreeCarbon 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,…
MAT FreeHardness scale conversion
Converts between HV, HBW, HRC, HRB and HK for non-austenitic steels using the ASTM E140 conversion tables, with…
MATLarson-Miller / Hollomon-Jaffe tempering parameter
Computes the Larson-Miller tempering parameter for a heat treatment and converts a soak at one temperature to the…
MATPipe schedule dimensions and weights
Looks up outside diameter, wall thickness, bore, metal area, mass per metre and contained volume for ASME B36.10M…
MATPreheat 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…
MATVickers hardness from diagonal measurement
Converts the two measured diagonals of a Vickers indentation and the test force into HV, with the ISO…
MATWeld metal volume and filler consumption
Calculates groove cross-section, deposited weld metal mass and the filler quantity to purchase, from joint geometry, weld length…
MATWelding arc energy and heat input
Calculates arc energy and heat input in kJ/mm from arc voltage, current and travel speed, applying the EN…
MATWRC-1992 chromium and nickel equivalents
Computes the WRC-1992 Creq and Nieq from weld metal chemistry and gives the predicted solidification mode, ready to…
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…
FFSAPI 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…
FFSB31G remaining strength of corroded pipe
Estimates the failure pressure and safe operating pressure of a corroded pipeline by the original ASME B31G method…
FFSBS 7910 failure assessment diagram
Plots an assessment point on the BS 7910 Option 1 failure assessment diagram and returns the utilisation against…
FFSHydrostatic 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…
FFSMAWP 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…
FFSPipeline design pressure to ASME B31.8
Calculates the design pressure of a steel pipeline from the Barlow formula with the ASME B31.8 location class…
FFSRSTRENG effective area remaining strength
Calculates failure and safe pressure for corroded pipe from the measured effective metal-loss area of a river-bottom profile,…
FFSWeld 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…
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…
CERTNDT composite examination grade
Composite grade from general, specific and practical examination scores, with the 70 % per-part and 80 % composite…
CERTRadiation 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…
CERTRecertification and vision test due dates
Expiry month of a five-year NDT certification, months remaining, when the recertification window opens, and when the annual…
CERTSNT-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…
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