Preliminary characterization of the pressure suppression experiment load response and source analysis: air test series. [BWR]
Abstract
Data from air tests conducted on the 1/5-Scale Model Mark I Pressure Suppression Facility at Lawrence Livermore Laboratory were analyzed for the purpose of determining the various sources of load signature characteristics. It was determined that hydrodynamic vertical loading function embodies effects from: (a) momentum flux associated with flow from the downcomers; (b) momentum rate associated with bulk pool motion; and (c) unbalanced internal pressure forces related to phenomena associated with vent clearing. The integral form of the linear momentum equation is used to derive qualitative and quantitative insight into the mechanics of the hydrodynamic loading function. Amplitude spectra derived from Fourier transformations show that the 25 Hz (approximate) structural mode is the only frequency which appears consistently in all wave forms which were spectrum analyzed.
- Authors:
- Publication Date:
- Research Org.:
- California Univ., Livermore (USA). Lawrence Livermore Lab.
- Sponsoring Org.:
- USDOE
- OSTI Identifier:
- 5234307
- Report Number(s):
- UCID-17552
TRN: 78-005846
- DOE Contract Number:
- W-7405-ENG-48
- Resource Type:
- Technical Report
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 21 SPECIFIC NUCLEAR REACTORS AND ASSOCIATED PLANTS; BWR TYPE REACTORS; LOSS OF COOLANT; PRESSURE SUPPRESSION; PRESSURE GRADIENTS; CONTAINMENT SYSTEMS; MOCKUP; PERFORMANCE TESTING; STRESSES; TEST FACILITIES; ACCIDENTS; CONTAINMENT; ENGINEERED SAFETY SYSTEMS; REACTOR ACCIDENTS; REACTORS; STRUCTURAL MODELS; TESTING; WATER COOLED REACTORS; WATER MODERATED REACTORS; 210100* - Power Reactors, Nonbreeding, Light-Water Moderated, Boiling Water Cooled
Citation Formats
Davis, B. W. Preliminary characterization of the pressure suppression experiment load response and source analysis: air test series. [BWR]. United States: N. p., 1977.
Web. doi:10.2172/5234307.
Davis, B. W. Preliminary characterization of the pressure suppression experiment load response and source analysis: air test series. [BWR]. United States. doi:10.2172/5234307.
Davis, B. W. Mon .
"Preliminary characterization of the pressure suppression experiment load response and source analysis: air test series. [BWR]". United States.
doi:10.2172/5234307. https://www.osti.gov/servlets/purl/5234307.
@article{osti_5234307,
title = {Preliminary characterization of the pressure suppression experiment load response and source analysis: air test series. [BWR]},
author = {Davis, B. W.},
abstractNote = {Data from air tests conducted on the 1/5-Scale Model Mark I Pressure Suppression Facility at Lawrence Livermore Laboratory were analyzed for the purpose of determining the various sources of load signature characteristics. It was determined that hydrodynamic vertical loading function embodies effects from: (a) momentum flux associated with flow from the downcomers; (b) momentum rate associated with bulk pool motion; and (c) unbalanced internal pressure forces related to phenomena associated with vent clearing. The integral form of the linear momentum equation is used to derive qualitative and quantitative insight into the mechanics of the hydrodynamic loading function. Amplitude spectra derived from Fourier transformations show that the 25 Hz (approximate) structural mode is the only frequency which appears consistently in all wave forms which were spectrum analyzed.},
doi = {10.2172/5234307},
journal = {},
number = ,
volume = ,
place = {United States},
year = {Mon Aug 08 00:00:00 EDT 1977},
month = {Mon Aug 08 00:00:00 EDT 1977}
}
-
Because of time constraints, the final report for the 1/5-scale Mark I boiling water reactor pressure suppression experiment presented results without critical analysis of the data. In particular, error bounds were not determined for the hydrodynamic vertical load function (HVLF). The objective of this study is to calculate the HVLF and the maximum download and maximum upload ratios for the 90/sup 0/ sector to 7.5/sup 0/ sector (i.e., the 3D to 2D ratios) together with their associated error bounds. Methodologies used to compute the HVLF, the 3D to 2D ratios, and error propagation for Test 1.3.1 are presented.
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Mark I 1/5-scale boiling water reactor pressure suppression experiment summary of effects due to vent line orifice variations: air test series
Twenty-seven air tests have been completed in the /sup 1///sub 5/-scale Mark I test facility. The observed effects of vent line orifice variations on the hydrodynamic vertical load function (HVLF) are presented. The conditions for standard tests, to which the orifice variation tests are compared, are defined and discussed. These tests used the ''standard'' or 9.5 inch orifices in the 90/sup 0/ sector vent lines. -
BWR Mark I pressure suppression study: characterization of the vertical load function utilizing bench top model tests
A study was conducted to characterize the mechanisms which give rise to observed oscillations in the vertical load function (VLF) of bench top pool dynamics tests. This is part of a continuing investigation at the Lawrence Livermore Laboratory of the General Electric Mark I Nuclear Reactor pressure suppression system. -
Progress report: qualitative differences between first and second order fit of pressure data - 1/5 scale Mk I BWR pressure suppression experiment and analysis program
Results are presented for the 1/5-scale Mark I boiling water reactor pressure suppression experiment. The objective of this study is to calculate the hydrodynamic vertical load function (HVLF) and the maximum download and maximum upload ratios for the 90/sup 0/ sector to 7.5/sup 0/ section (i.e., the 3D to 2D ratios) together with their associated error bounds. Special graphs are presented of the pressure data that are useful in diagnostic studies of the HVLF. These graphs are three dimensional plots which depict the spatially dependent pressure as a function of time. These plots are qualitative but present an overview, notmore » -
BWR Mark I pressure suppression study: effect of downcomer fill level on the vertical load function
The investigation reported forms a part of the BWR Mark I Pressure Suppression Experiment Program and is one of a series of small scale studies designed to evaluate limited aspects of the pool dynamics phenomena prior to conduct of the 1/5 scale air test series. Presented is an experimental study of the effect of downcomer fill level (DFL) on the vertical load function (VLF).