Author: Publisher:
ISBN:
Category :
Languages : en
Pages : 0
Book Description
Process Specifications for Critical Mass Control: Purex Plant
Author: Supplement
Author: B. F. JudsonProcess Specifications for Critical Mass Control
Author: Publisher:
ISBN:
Category :
Languages : en
Pages : 22
Book Description
This document is Revision No. 2 of the ''Process Specifications for Critical Mass Control -- Purex Plant''. It encompasses the changes in flowsheet, equipment and plant operating philosophy that have developed since the plant startup. It supersedes Document HW-44064 (Revision No. 1). Plutonium-239 and uranium-235, either as the metals or as dissolved or solid compounds are capable of spontaneous and violent nuclear reactions. Following initial dissolution of irradiated natural uranium fuel elements the Purex Plant is normally involved in the processing of liquid solutions containing these isotopes. However, in Purex Plant solutions, uranium-235 is invariably associated with a large fraction of neutron-absorbing uranium-238, a condition which precludes the possibility of a nuclear reaction. (These specifications are based on the premise that no enriched uranium is processed in the Purex Plant.) Plutonium-239, on the other hand, is separated from uranium by means of the Purex process; and even prior (process-wise) to its separation, the ratio of plutonium to uranium must be controlled during the off-standard conditions of plutonium rework or recycle. Critical mass control in the Purex Plant is concerned solely with prevention of nuclear reactions of plutonim-239, which has been produced by irradiation of natural uranium fuel elements.
Application of Critical Mass Document HW-44064 to the Purex Process
Author: Publisher:
ISBN:
Category :
Languages : en
Pages : 7
Book Description
This document is a supplementary operating guide to document HW-44064, ''Process Specifications for Critical Mass Control -- Purex Plant.'' It is primarily intended that this document illustrate the actual operational means of conforming to the limits of critical mass control as presented in HW-44064.
Critical Mass Control Specifications
Author: L. M. MeekerCritical Mass Control Specification Hood 7-A.
Author: Publisher:
ISBN:
Category :
Languages : en
Pages : 4
Book Description
Hood 7-A will be used to handle filtrate and miscellaneous aqueous waste streams from the RMC button line. This document defines the critical mass control specifications for hood 7-A.
Fritz Höger, der niederdeutsche Backstein-Baumeister
Author: Nuclear Safety
Author: Publisher:
ISBN:
Category : Nuclear engineering
Languages : en
Pages : 1548
Book Description
Author: 
Author: