ASTM E317-21 PDF

Full title and description

ASTM E317-21 — Standard Practice for Evaluating Performance Characteristics of Ultrasonic Pulse‑Echo Testing Instruments and Systems without the Use of Electronic Measurement Instruments. This practice defines practical, non‑electronic procedures for characterizing and comparing pulse‑echo ultrasonic instruments and complete examination systems used with A‑scan presentation.

Abstract

This practice describes procedures to evaluate key performance characteristics of ultrasonic pulse‑echo examination instruments and systems (A‑scan, pulsed‑wave). Evaluations include horizontal and vertical limits and linearity, entry‑ and far‑surface resolution, sensitivity and noise, and the accuracy of calibrated gain controls. Procedures are intended for shop or field use without the need for additional electronic measurement instruments and are useful for comparative testing, baseline establishment, and periodic checks to detect long‑term changes in instrument performance.

General information

• Status: Active
• Publication date: June 1, 2021
• Publisher: ASTM International
• ICS / categories: 19.100 — Non‑destructive testing
• Edition / version: E317‑21 (2021 edition)
• Number of pages: 13

Scope

This practice provides step‑by‑step procedures for evaluating the performance characteristics of ultrasonic pulse‑echo instruments and complete systems (including search units, instrument, interconnections and fixtures) using pulsed‑wave A‑scan presentation. It applies to shop and field conditions and is intended to be used for comparing instruments, establishing baselines, and detecting long‑term drift or impending failures. The practice does not set acceptance limits — any pass/fail criteria must be specified by the user or contracting parties — and it is not intended as a substitute for calibration or standardization for a specific inspection application.

Key topics and requirements

• Evaluation of horizontal limit and horizontal linearity (beam/scan horizontal response).
• Evaluation of vertical limit and vertical linearity (time‑/depth‑related response).
• Resolution measurements at entry surface and far surface (ability to distinguish reflectors).
• Sensitivity and noise assessment (signal‑to‑noise considerations and reproducibility).
• Accuracy checks for calibrated gain controls and indication amplitude response.
• Use of selected test blocks, reference reflectors and a precision external attenuator where specified.
• Procedures applicable without additional electronic measurement instruments; A‑scan (rf or video) presentation required.
• Guidance on test conditions, frequency of tests, and reporting; user to define acceptance criteria when needed.

Typical use and users

Commonly used by nondestructive testing (NDT) technicians and supervisors, inspection service providers, instrument and transducer manufacturers, quality assurance and calibration laboratories, and asset owners/operators. Typical uses include factory acceptance checks, periodic preventive maintenance checks, performance comparison between instruments, and establishing baseline behavior for instruments and systems prior to service.

Related standards

Closely related ASTM and guidance documents include: Guide/Practice E1324 (measurement of electronic characteristics of ultrasonic testing instruments), Practice E114 (pulse‑echo straight‑beam contact testing), Practice E797 (manual ultrasonic thickness measurement), relevant calibration‑block practices and test‑block fabrication guides (used as reference blocks in E317 evaluations), and other E07 committee publications on ultrasonic methods and reference blocks. Users commonly apply E317 together with these documents when more detailed electronic measurements or specific inspection calibrations are required.

Keywords

ultrasonic, pulse‑echo, A‑scan, performance evaluation, calibration block, sensitivity, resolution, linearity, nondestructive testing, NDT, instrument performance, gain accuracy, test practice

FAQ

Q: What is this standard?

A: ASTM E317‑21 is a practice that defines hands‑on, non‑electronic procedures to evaluate the performance characteristics of ultrasonic pulse‑echo instruments and complete examination systems used with A‑scan displays.

Q: What does it cover?

A: It covers methods to measure horizontal and vertical limits and linearity, entry‑ and far‑surface resolution, sensitivity and noise, and the accuracy of calibrated gain controls using test blocks and, where specified, an external attenuator. It is intended for shop or field use without specialized electronic test equipment.

Q: Who typically uses it?

A: NDT technicians and supervisors, inspection companies, instrument manufacturers, QA/calibration labs, and plant inspection/maintenance personnel use it for comparative testing, baseline establishment, and routine performance checks.

Q: Is it current or superseded?

A: The document is the 2021 edition (E317‑21) and is published as the active practice; users should confirm in their national/regional catalog or with ASTM International for any later revisions or amendments.

Q: Is it part of a series?

A: It is part of the ASTM E07 committee publications on nondestructive testing and is commonly used alongside related practices and guides (for example E1324, E114, E797 and calibration‑block guidance) that together support ultrasonic examination and instrument characterization.

Q: What are the key keywords?

A: Ultrasonic, pulse‑echo, A‑scan, instrument performance, calibration block, sensitivity, resolution, linearity, NDT.