Inadvertent actuation block valve for a small modular nuclear reactor
Abstract
An inadvertent actuation block valve includes inlet and outlet orifices being in selective fluid communication via a chamber. A disc is disposed within the chamber and a bellows is configured to contract at a predetermined pressure differential between reactor fluid entering a reference pressure orifice and control fluid entering the inlet orifice. When the bellows contracts, the disc engages the outlet orifice and isolates fluid communication between the inlet and outlet orifices. The inadvertent actuation block valve prevents inadvertent opening of an emergency core cooling valve when a reactor is at operating pressure that is above the predetermined set pressure range. The inadvertent actuation block valve permits the emergency cooling valves to open and to remain open when reactor pressure is below the predetermined set pressure range. The inadvertent actuation block valve does not impede long term emergency cooling that occurs when the reactor is at low pressure.
- Inventors:
- Issue Date:
- Research Org.:
- Curtiss-Wright Flow Control Corporation, Farmingdale, NY (United States); NuScale Power LLC, Corvallis, OR (United States)
- Sponsoring Org.:
- USDOE
- OSTI Identifier:
- 1986916
- Patent Number(s):
- 11521757
- Application Number:
- 16/294,062
- Assignee:
- Curtiss-Wright Flow Control Corporation (Farmingdale, NY); NuScale Power, LLC (Corvallis, OR)
- DOE Contract Number:
- NE0000633
- Resource Type:
- Patent
- Resource Relation:
- Patent File Date: 03/06/2019
- Country of Publication:
- United States
- Language:
- English
Citation Formats
O'Brien, Hugh S., and Velkoff, Jr., William Jeffrey. Inadvertent actuation block valve for a small modular nuclear reactor. United States: N. p., 2022.
Web.
O'Brien, Hugh S., & Velkoff, Jr., William Jeffrey. Inadvertent actuation block valve for a small modular nuclear reactor. United States.
O'Brien, Hugh S., and Velkoff, Jr., William Jeffrey. Tue .
"Inadvertent actuation block valve for a small modular nuclear reactor". United States. https://www.osti.gov/servlets/purl/1986916.
@article{osti_1986916,
title = {Inadvertent actuation block valve for a small modular nuclear reactor},
author = {O'Brien, Hugh S. and Velkoff, Jr., William Jeffrey},
abstractNote = {An inadvertent actuation block valve includes inlet and outlet orifices being in selective fluid communication via a chamber. A disc is disposed within the chamber and a bellows is configured to contract at a predetermined pressure differential between reactor fluid entering a reference pressure orifice and control fluid entering the inlet orifice. When the bellows contracts, the disc engages the outlet orifice and isolates fluid communication between the inlet and outlet orifices. The inadvertent actuation block valve prevents inadvertent opening of an emergency core cooling valve when a reactor is at operating pressure that is above the predetermined set pressure range. The inadvertent actuation block valve permits the emergency cooling valves to open and to remain open when reactor pressure is below the predetermined set pressure range. The inadvertent actuation block valve does not impede long term emergency cooling that occurs when the reactor is at low pressure.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {Tue Dec 06 00:00:00 EST 2022},
month = {Tue Dec 06 00:00:00 EST 2022}
}
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