PAUT CALIBRATION & VALIDATION BLOCK

Product ID: ALA07-V- PA01

Description:-

These pipe calibration blocks are specially-designed to facilitate phased array UT (PAUT). The ALCO block design includes various modifications to the original ASME design, including extra axial and arc length, a rearranged notch layout, and a 10° angled cut on one end for blocks over 5″ NPS.  These modifications help to minimize unwanted “noise” from the backwall while performing DAC/TCG calibrations with phased array UT equipment.

A calibration block should be a section of pipe of the same nominal size, schedule, heat treatment, and material specification as the material being examined.  ALCO maintains a large inventory of raw material for the machining of these standards, and they can be made from customer-supplied material as well.

Our Phased Array Pipe Calibration Blocks contain (4) EDM notches (axial and circumferential on both OD and ID) at a depth of 8-11% of nominal wall thickness x 1/4″ max wide (most notches are approximately .030-.040″ wide) x 1.000″ min long.  Blocks 5″ NPS and smaller are left at 360°, while blocks over 5″ are milled to a 180/120/90/60° arc section (depending on nominal pipe size). All blocks are 12″ in axial length minimum, or 10T, whichever is greater.  Made in accordance with ASME Section V Article 4 Figure T-434.3, with ALCO modification for PAUT.

Ready to request a quote for some blocks?  Here’s what we need

• What is the pipe material?
• What is the pipe NPS / OD size?
• What is the pipe schedule / wall thickness?
• Is ALCO supplying the material or will it be customer supplied?
• Are there any changes or modifications requested to the our block design?
• Call our office for details