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The use of RTR for industrial purposes is the result of the NDT industry’s “latching on” to what the medical profession has been doing with real time in previous years. As a result, there are fewer specifications for RTR than for the NDT test methods, which have been established for a longer period.

At present, specifications are being put together by industry users in various settings. These are written for in-house use and for such organizations as the ASTM. (Refer to the applications booklet for worksheet exercises related to the ASTM.)

The following is a list of RTR specifications listed in the 1996 Annual Book of ASTM Standards, Section 3 Volume 03.03, “Nondestructive Testing”. Note the definitions for “standard practice”, standard test method, and standard guide.

An ASTM standard practice is a definitive procedure for performing one or more specific operations or functions and does not produce a test result.

A standard test method is a definitive test procedure producing a result.

A standard guide is a series of options or instructions recommending no specific course of action.

E747: A standard practice for controlling the quality of radiographic examination using wire image quality indicators.
E801: A standard practice for controlling the quality of radiological examination of electronic devices.
E100: A standard guide for radioscopy.
E1025: A standard practice for hole-type image quality indicators.
E1255: A standard practice for radioscopy.
E1411: A standard practice for qualifying radioscopic systems.
E1416: A standard test method for radioscopic examination of weldments.
E1441: A standard guide for computer tomography (CT) imaging.
E1453: A standard guide for storage of media containing analog or digital radioscopic data.
E1475: A standard guide for data fields for computerized transfer of digital radiological test data.
E1647: A standard practice for determining contrast sensitivity in radioscopy.
E1734: A standard practice for radioscopic examination of castings.

Other standards applying to RTR involve the American National Standard that establishes requirements for the design and operation of installations using gamma and X-rays for nonmedical uses. The objective is to protect personnel from overexposure to radiation.

The Code of Federal Regulations or the rules of the applicable state department of health provide other safety RTR equipment rules/regulations relating to radiation.