1. Scope

1.1 This guide provides advice for conducting experiments to investigate the effects of helium on the properties of metals where the technique for introducing the helium differs in some way from the actual mechanism of introduction of helium in service. Simulation techniques considered for introducing helium shall include charged particle implantation, exposure to [alpha]-emitting radioisotopes, and tritium decay techniques. Procedures for the analysis of helium content and helium distribution within the specimen are also recommended.

1.2 Two other methods for introducing helium into irradiated materials are not covered in this guide. They are the enhancement of helium production in nickel-bearing alloys by spectral tailoring in mixed-spectrum fission reactors, and isotopic tailoring in both fast and mixed-spectrum fission reactors. These techniques are described in Refs (1-5). Dual ion beam techniques (6) for simultaneously implanting helium and generating displacement damage are also not included here. This latter method is discussed in Practice E521.

1.3 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.

2. Referenced Documents (purchase separately) The documents listed below are referenced within the subject standard but are not provided as part of the standard.

ASTM Standards

C859 Terminology Relating to Nuclear Materials

E170 Terminology Relating to Radiation Measurements and Dosimetry

E521 Practice for Neutron Radiation Damage Simulation by Charged-Particle Irradiation

E706 Master Matrix for Light-Water Reactor Pressure Vessel Surveillance Standards, E 706(0)

E910 Test Method for Application and Analysis of Helium Accumulation Fluence Monitors for Reactor Vessel Surveillance, E706 (IIIC)

Keywords

helium analysis; helium effects; ion irradiation; radiation damage; tritium trick; Alpha particle radioactivity; Deformation; Density--nuclear-grade materials; Destructive testing--irradiation; Dosimetry; Electron radiation; Energy deposition--ionizing radiation; Fluence; Radiation exposure--nuclear materials/applications; Foil extraction; Heating tests--metals; Helium; Ion displacement; Irradiance/irradiation; Surface analysis--nuclear materials; Metallographic analysis/inspection; Metals and metallic materials--irradiation; Neutron radiation--nuclear materials/applications; Photomicrography; Purity analysis; Swelling

ICS Code

ICS Number Code 77.040.99 (Other methods of testing metals)

DOI: 10.1520/E0942-96

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