Pozor!

Vo Vašom prehliadači nie je aktuálne povolené spúšťanie Javascriptu. Je možné, že niektoré funkcie nebudú fungovať správne. Pre plnú funkčnosť internetového obchodu odporúčame povoliť Javascript. Tu sú inštrukcie ako povoliť JavaScript vo Vašom webovom prehliadači.

Zobrazovaná mena: €

Zobrazenie ceny: bez DPH

Doplňujúce informácie

ASTM C1233-15

Standard Practice for Determining Equivalent Boron Contents of Nuclear Materials

Automaticky preložený názov:

Štandardná prax pre stanovenie ekvivalentnej bór Obsah jadrových materiálov

NORMA vydaná dňa 1.6.2015

Jazyk
Prevedenie	PDF - okamžité stiahnutie - 61.20 € Tlačené - 61.20 €
Dostupnosť	SKLADOM
Cena	61.20 € bez DPH
61.20 €

Informácie o norme:

Označenie normy: ASTM C1233-15
Poznámka: NEPLATNÁ
Dátum vydania normy: 1.6.2015
Kód tovaru: NS-591303
Počet strán: 3
Približná hmotnosť: 9 g (0.02 libier)
Krajina: Americká technická norma
Kategória: Technické normy ASTM

Tlač

Odoslať známemu

Otázka

Kategórie - podobné normy:

Štěpné materiály

Anotácia textu normy ASTM C1233-15 :

Keywords:
boron, neutron absorption, nuclear materials, nuclear poisons ,, ICS Number Code 27.120.30 (Fissile materials and nuclear fuel technology)

Doplňujúce informácie

Significance and Use

4.1 Use of this standard practice yields an equivalent boron content (EBC) that can be used to characterize the neutron-absorbing properties of a nuclear material. The elements included in the calculation are typically chosen so that the EBC represents either the entire material (for example, for a moderator) or the impurities in the material (for example, for a nuclear fuel). This practice is typically used for materials in which thermal neutron absorption is undesirable. The EBC is not intended for use as an input to any neutronic calculation. The EBC factors in Table 1 were selected to represent neutron absorption in water reactors under normal operating conditions. It is the responsibility of the user to evaluate their suitability for other purposes.

1.1 This standard details a recommended practice for the calculation of the Equivalent Boron Content (EBC) for nuclear materials. The EBC is used to provide a measure of the macroscopic neutron absorption cross section of a nuclear material. EBC factors for the natural elements are determined from their atomic masses and thermal neutron absorption cross sections. This practice is illustrated by using EBC factors that are based on thermal neutron (2200 m/s) absorption cross sections. Other EBC factors may be used depending upon the actual neutron energy spectrum.

1.2 The EBC is a characteristic of a homogeneous material. Characterization of inhomogeneous materials and calculation of neutron multiplication factors require techniques that are beyond the scope of this practice.

1.3 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

C698-16	Standard Test Methods for Chemical, Mass Spectrometric, and Spectrochemical Analysis of Nuclear-Grade Mixed Oxides ((U, Pu)O2)
C761-18	Standard Test Methods for Chemical, Mass Spectrometric, Spectrochemical, Nuclear, and Radiochemical Analysis of Uranium Hexafluoride
C799-19	Standard Test Methods for Chemical, Mass Spectrometric, Spectrochemical, Nuclear, and Radiochemical Analysis of Nuclear-Grade Uranyl Nitrate Solutions
C696-19	Standard Test Methods for Chemical, Mass Spectrometric, and Spectrochemical Analysis of Nuclear-Grade Uranium Dioxide Powders and Pellets
C859-24	Standard Terminology Relating to Nuclear Materials