TITLE: Technical Uncertainties in the SRC-II Reactor System. Report for the Technical Data Analysis Program.

INST.  AUTHOR: Pittsburg and Midway Coal Mining Co., Denver, CO.

SPONSOR: Department of Energy, Washington, DC.

LANGUAGE: English

PUB.  TYPE: Technical Report

PUB.  COUNTRY: United States

SOURCE: Department of Energy [DE],  Aug 84,  30p.

ABSTRACT:

Mechanical fabrication and process fluid dynamic uncertainties were present in the SRC-II Demonstration Plant dissolver design. Mechanical uncertainties resulted from the absence of detailed fabrication plans for the single and multiple dissolver per reaction train design options. Partial field fabrication with the single vessel per train option would likely have led to considerable cost inefficiencies compared to a totally shop fabricated design. Final design selection should be deferred until detailed fabrication proposals are available. The major fluid dynamic uncertainty concerns vapor phase holdup, which recent information suggests could be much greater than was expected in the Phase One design effort. This can be addressed by increasing reactor volume or accepting future economic risk due to reduced rate operation. Other areas of fluid dynamic  uncertainty are slurry phase backmixing and hydrogen mass transfer.  Reactor internals such as downcomers and flow distributors have been proposed to control internal fluid dynamics. These uncertainties are not expected to prevent successful operation of an SRC-II Demonstration Plant.  However, they do increase economic risks in such a plant. 13 references, 1 table. (ERA citation 09:042587)

REPORT  NUMBER: DOE/PC/50046-12

CONTRACT  NUMBER: AC22-82PC50046