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Title: Operating history of Hanford Piles

Abstract

This document has been written because of a request for information from the Advisory Committee on Reactor Safeguards. Hanford operating experience has been summarized in terms of operating hours, startups and scram analysis.

Authors:
Publication Date:
Research Org.:
General Electric Co., Richland, WA (United States). Hanford Atomic Products Operation
Sponsoring Org.:
USDOE, Washington, DC (United States)
OSTI Identifier:
10104677
Report Number(s):
HW-37304
ON: DE93003406
DOE Contract Number:
AC06-76RL01830
Resource Type:
Technical Report
Resource Relation:
Other Information: PBD: 15 Jun 1955
Country of Publication:
United States
Language:
English
Subject:
22 GENERAL STUDIES OF NUCLEAR REACTORS; HANFORD PRODUCTION REACTORS; REACTOR OPERATION; SCRAM; REACTOR START-UP; MAINTENANCE; FUEL ELEMENTS; REACTOR SAFETY; 220900; 220600; RESEARCH, TEST, TRAINING, PRODUCTION, IRRADIATION, MATERIALS TESTING REACTORS

Citation Formats

Talbott, J.W. Operating history of Hanford Piles. United States: N. p., 1955. Web. doi:10.2172/10104677.
Talbott, J.W. Operating history of Hanford Piles. United States. doi:10.2172/10104677.
Talbott, J.W. Wed . "Operating history of Hanford Piles". United States. doi:10.2172/10104677. https://www.osti.gov/servlets/purl/10104677.
@article{osti_10104677,
title = {Operating history of Hanford Piles},
author = {Talbott, J.W.},
abstractNote = {This document has been written because of a request for information from the Advisory Committee on Reactor Safeguards. Hanford operating experience has been summarized in terms of operating hours, startups and scram analysis.},
doi = {10.2172/10104677},
journal = {},
number = ,
volume = ,
place = {United States},
year = {Wed Jun 15 00:00:00 EDT 1955},
month = {Wed Jun 15 00:00:00 EDT 1955}
}

Technical Report:

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  • The operating history for the Peach Bottom-1 Reactor is presented for the years 1966 through 1975. Information concerning general chemistry data, general physics data, location of sensing elements in the primary helium circuit, and postirradiation examination and testing of reactor components is presented.
  • An overview of the Peach Bottom test element program and a detailed record of the fission gas release data determined for the various test elements is presented. The report was prepared under the Peach Bottom End-of-Life Program which is jointly sponsored by ERDA and EPRI to validate specific HTGR design codes and predictions by comparison of actual to predicted thermal, physics, fission product, and materials behavior in Peach Bottom.
  • Allowing a Hanford reactor to attain a critical state after the coolant has been lost will not result in an appreciable increase in the fission products released to the surrounding country side. The fission product inventory within the reactor cannot be increased by as little as 1% by any conceivable excursion during a meltdown. In addition, damage to the Hanford reactor will be independent of whether a delayed critical state is reached or not. Since holding the reactor sub-critical will help neither the reactor plant nor the surrounding areas there is no reason to maintain the present control requirements. Instead,more » it is recommended that the control strength be sufficient to hold the pile sub-critical only until the process tubes have been rendered useless as cooling channels.« less
  • During the summer of 1952 a series of leaking process tubes and badly pitted slugs was encountered in the Hanford piles. In August 1952, a program was initiated to determine the mechanism of the observed attack and to determine what corrective measures could be taken. Two suggested hypotheses, cavitation and erosion-corrosion, were considered the most practical explanations of the observed attack. Flow laboratory investigations of these hypotheses conclusively showed that erosion-corrosion in uninhibited process water was the cause of the excessive attack noted. The addition of an inhibitor, 2 ppM sodium dichromate, to the water resulted in the complete eliminationmore » of the erosion-corrosion attack on the aluminum slugs and tubes. 5 refs.« less
  • This document was prepared in response to a request from the Atomic Energy Commission for a brief review of the principal ideas and technical developments which might effect power levels over the following six years. Also requested were approximate data on any pile modifications that might be involved, including rough estimates covering possible cost and completion dates. A brief discussion of plans for increasing the power levels of the Hanford Piles is provided.