Abstract

This specification defines the chemical and physical requirements for boron carbide powder intended for a variety of nuclear applications. The powder shall be classified as: Type 1; Type 2; and Type 3. The material shall conform to the chemical composition requirements prescribed. Quality control tests, acceptance tests, referee tests, and retention of archive samples by the seller shall be performed to conform to the specified requirements.

This abstract is a brief summary of the referenced standard. It is informational only and not an official part of the standard; the full text of the standard itself must be referred to for its use and application. ASTM does not give any warranty express or implied or make any representation that the contents of this abstract are accurate, complete or up to date.

1. Scope

1.1 This specification defines the chemical and physical requirements for boron carbide powder intended for a variety of nuclear applications. Because each application has a different need for impurity and boron requirements, three different chemical compositions of powder are specified. In using this specification, it is necessary to dictate which type of powder is intended to be used. In general, the intended applications for the various powder types are as follows:

1.1.1 Type 1 For use as particulate material in nuclear reactor core applications.

1.1.2 Type 2 Powder that will be further processed into a fabricated shape for use in a nuclear reactor core or used in non-core applications when the powder directly or indirectly may cause adverse effects on structural components, such as halide stress corrosion of stainless steel.

1.1.3 Type 3 Powder that will be used for non-core applications or special in-core applications.

1.2 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard.

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

ANSI Standard

U.S. Government Document

ASTM Standards

B527 Test Method for Determination of Tap Density of Metallic Powders and Compounds

B822 Test Method for Particle Size Distribution of Metal Powders and Related Compounds by Light Scattering

B923 Test Method for Metal Powder Skeletal Density by Helium or Nitrogen Pycnometry

C371 Test Method for Wire-Cloth Sieve Analysis of Nonplastic Ceramic Powders

C791 Test Methods for Chemical, Mass Spectrometric, and Spectrochemical Analysis of Nuclear-Grade Boron Carbide

E11 Specification for Woven Wire Test Sieve Cloth and Test Sieves

E105 Practice for Probability Sampling of Materials

Keywords

boron carbide (nuclear grade); nuclear-grade boron carbide powder, spec;

ICS Code

ICS Number Code 27.120.30 (Fissile materials and nuclear fuel technology); 71.060.50 (Salts)

DOI: 10.1520/C0750-09

ASTM International is a member of CrossRef.

ASTM C750