Nuclear component horizontal seismic restraint
Abstract
A nuclear component horizontal seismic restraint. Small gaps limit horizontal displacement of components during a seismic occurrence and therefore reduce dynamic loadings on the free lower end. The reactor vessel and reactor guard vessel use thicker section roll-forged rings welded between the vessel straight shell sections and the bottom hemispherical head sections. The inside of the reactor guard vessel ring forging contains local vertical dovetail slots and upper ledge pockets to mount and retain field fitted and installed blocks. As an option, the horizontal displacement of the reactor vessel core support cone can be limited by including shop fitted/installed local blocks in opposing alignment with the reactor vessel forged ring. Beams embedded in the wall of the reactor building protrude into apertures in the thermal insulation shell adjacent the reactor guard vessel ring and have motion limit blocks attached thereto to provide to a predetermined clearance between the blocks and reactor guard vessel ring.
- Inventors:
-
- Lynchburg, VA
- Issue Date:
- Research Org.:
- BABCOCK & WILCOX CO
- OSTI Identifier:
- 866629
- Patent Number(s):
- 4752436
- Assignee:
- Babcock & Wilcox Company (New Orleans, LA)
- Patent Classifications (CPCs):
-
G - PHYSICS G21 - NUCLEAR PHYSICS G21C - NUCLEAR REACTORS
Y - NEW / CROSS SECTIONAL TECHNOLOGIES Y02 - TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE Y02E - REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- DOE Contract Number:
- AC06-79ET37111
- Resource Type:
- Patent
- Country of Publication:
- United States
- Language:
- English
- Subject:
- nuclear; component; horizontal; seismic; restraint; gaps; limit; displacement; components; occurrence; reduce; dynamic; loadings; free; reactor; vessel; guard; thicker; section; roll-forged; rings; welded; straight; shell; sections; bottom; hemispherical; head; inside; forging; contains; local; vertical; dovetail; slots; upper; ledge; pockets; mount; retain; field; fitted; installed; blocks; option; core; support; cone; limited; including; shop; opposing; alignment; forged; beams; embedded; wall; building; protrude; apertures; thermal; insulation; adjacent; motion; attached; thereto; provide; predetermined; clearance; shell sections; attached thereto; thermal insulation; reactor vessel; guard vessel; shell section; core support; reactor building; dynamic loadings; seismic restraint; straight shell; nuclear component; component horizontal; horizontal displacement; horizontal seismic; vessel core; spherical head; dynamic loading; /376/52/976/
Citation Formats
Snyder, Glenn J. Nuclear component horizontal seismic restraint. United States: N. p., 1988.
Web.
Snyder, Glenn J. Nuclear component horizontal seismic restraint. United States.
Snyder, Glenn J. Fri .
"Nuclear component horizontal seismic restraint". United States. https://www.osti.gov/servlets/purl/866629.
@article{osti_866629,
title = {Nuclear component horizontal seismic restraint},
author = {Snyder, Glenn J},
abstractNote = {A nuclear component horizontal seismic restraint. Small gaps limit horizontal displacement of components during a seismic occurrence and therefore reduce dynamic loadings on the free lower end. The reactor vessel and reactor guard vessel use thicker section roll-forged rings welded between the vessel straight shell sections and the bottom hemispherical head sections. The inside of the reactor guard vessel ring forging contains local vertical dovetail slots and upper ledge pockets to mount and retain field fitted and installed blocks. As an option, the horizontal displacement of the reactor vessel core support cone can be limited by including shop fitted/installed local blocks in opposing alignment with the reactor vessel forged ring. Beams embedded in the wall of the reactor building protrude into apertures in the thermal insulation shell adjacent the reactor guard vessel ring and have motion limit blocks attached thereto to provide to a predetermined clearance between the blocks and reactor guard vessel ring.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {Fri Jan 01 00:00:00 EST 1988},
month = {Fri Jan 01 00:00:00 EST 1988}
}