Eddy Current Calibration Standards
ASME Sec. V Calibration Reference Standard 2007 Code
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This standard is used to establish and verify system response for ET examination of nonferromagnetic steam generator heat exchanger tubing. Manufactured from tubing of the same nominal size and material type as that being examined. Discontinuities include one (1) through-wall hole (0.052” dia for tubing 3/4” and under; 0.067” dia for over 3/4”); four (4) through-wall holes @ .026” dia (for tubing 3/4” and under) or .033” dia (for tubing over 3/4”) indexed 90°; one (1) 7/64” FBH @ 60%; and four (4) 3/16” FBHs @ 20% indexed 90°. Tubing can be customer or PH Tool-supplied.
In accordance with 2007 ASME Section V, Article 8, Appendix II, Paragraph II-860.2. |
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ASME Sec. V Calibration Reference Standard Pre – 2007 Code
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This standard is used to establish and verify system response for ET examination of nonferromagnetic steam generator heat exchanger tubing. Manufactured from tubing of the same nominal size and material type as that being examined. Discontinuities include one (1) through-wall hole (0.052” dia for tubing 3/4” and under; 0.067” dia for over 3/4”); one (1) 5/64” dia FBH @ 80% deep; one (1) 7/64” FBH @ 60%; one (1) 3/16” FBH @ 40%; four (4) 3/16” FBHs @ 20% indexed 90°; one (1) 1/8” wide 360° OD groove at 20% deep; and one (1) 1/16” wide 360° ID groove @ 10%. Tubing can be customer or PH Tool-supplied. In accordance with ASME Section V, Article 8, Appendix I, Paragraph I-865.
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ID FBH Calibration Standard
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Custom standard containing five (5) 0.010” diameter FBHs at varying depths from 0.002” to 0.006”, and one (1) 0.010” diameter through-wall hole. FBH depth and location can be customer-directed. Typical separation between holes is 2”.
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180° 3-Flaw Wearscar Standard
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Popular standard containing three (3) wearscars at 180° circumferential extent at depths (wall loss) of 25%, 50%, and 75% of wall thickness. 20%, 40%, 60% also popular. Extent of wearscar can be other than 180° if preferred. Standard also contains one (1) through-wall hole (0.052” dia. for tubing 3/4” and under; 0.067” dia. for tubing over 3/4”. Circ extents of 120° and 360° also available.
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Circ Notch Eddy Current Standard
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This standard contains nine (9) circumferentially-oriented OD EDM notches. All notches are 20% TWD (through-wall depth). Circumferential extent is 10° through 90° in 10° increments. Notch width is normally 0.005” to 0.010”. Other variations are available.
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Tube Support Simulation Ring
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Used with ASME and other eddy current calibration standards. ID of support ring fits OD of tube standard with approximately 0.010” clearance. Length of support ring typically varies from 1/4” to 1” depending on application. Available in many materials.
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Specialized Tube Standards for ET
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Custom variations are also available containing EDM notches, FBHs (OD and ID), wall thinning, simulated ID pitting, and other unusual discontinuities. Also includes standards of extra-long overall length, very small IDs, and exotic alloys such as tantalum and iridium.
Send us your sketch of any unique standard and we’ll provide a prompt price quotation. |
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ID Thinning Standard
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Popular eddy current standard used to represent general uniform wastage (ID wall loss). Contains four (4) 2.0” long bands @ 10%, 20%, 30%, and 40% wall loss at 360° circumferential extent. Standard is made in two (2) 11” long pieces (22” overall) and is joined with a plastic coupling on the OD. Can be made in any tube alloy and size. Material is typically available from our stock with MTRs. If we don’t stock it, we’ll get it. Or, as always, this standard can be made from customer-supplied material.
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