Results 1 to 10 of about 90 (72)

Design of Control System of Once-Through Steam Generator Based on Proximal Policy Optimization Algorithm

open access: yesScience and Technology of Nuclear Installations, 2022
Because of the characteristics of the small water volume of OTSG, it is hard to control the outlet steam pressure when the load is changed or disturbed. This study is devoted to the control of the once-through steam generator (OTSG).
Cheng Li   +3 more
doaj   +2 more sources

Investigation of solid particle erosion‐related failures in once‐through steam generators (OTSGs) in oil sands in‐situ production: The limitations of the API RP 14E guideline in OTSG design or operational decision‐making

open access: yesThe Canadian Journal of Chemical Engineering, 2023
AbstractThe required steam for steam‐assisted gravity drainage (SAGD) oil sands operations is generated using a once‐through steam generator (OTSG) that is fed with relatively poor quality process water. Industries have reported possible solid particle erosion‐related failure in the OTSG boiler tubes because of the transport of precipitated dense ...
Oluwaseun Ezekiel Adedeji   +3 more
openaire   +2 more sources

Performance Analysis and Tube Inlet Orifice Length Evaluation of a Once–Through Steam Generator [PDF]

open access: yesE3S Web of Conferences, 2019
A numerical study is conducted for performance analysis and secondary side screw-type tube inlet orifice design of a once–through steam generator (OTSG).
Sik Han Hun   +5 more
doaj   +1 more source

Uncertainty quantification of once-through steam generator for nuclear steam supply system using latin hypercube sampling method

open access: yesNuclear Engineering and Technology, 2023
To study the influence of parameter uncertainty in small pressurized water reactor (SPWR) once-through steam generator (OTSG), the nonlinear mathematical model of the SPWR is firstly established.
Lekang Chen   +4 more
doaj   +1 more source

Optimization and Improvement of Sodium Heated Once-through Steam Generator Transient Analysis Code Based on the JFNK Algorithm

open access: yesEnergies, 2023
The sodium heated once-through steam generator (OTSG) is a vital barrier separating sodium and the water loop in the sodium-cooled fast reactor (SFR). In view of the timeliness requirement of OTSG operation performance evaluation, Fortran95 programming ...
Bo Wang   +8 more
doaj   +1 more source

A three-region movable-boundary helical coil once-through steam generator model for dynamic simulation and controller design

open access: yesNuclear Engineering and Technology, 2023
A simple but accurate mathematical model is crucial for dynamic simulations and controller design of helical coil once-through steam generator (OTSG). This paper presents a three-region movable boundary dynamic model of the helical coil OTSG.
Shifa Wu   +4 more
doaj   +1 more source

Fault-tolerant control system for once-through steam generator based on reinforcement learning algorithm

open access: yesNuclear Engineering and Technology, 2022
Based on the Deep Q-Network(DQN) algorithm of reinforcement learning, an active fault-tolerance method with incremental action is proposed for the control system with sensor faults of the once-through steam generator(OTSG).
Cheng Li   +3 more
doaj   +1 more source

Study on IMC-PID Control of Once-Through Steam Generator for Small Fast Reactor

open access: yesEnergies, 2022
The simplification of simulation inevitably leads to model mismatch. In this paper, a once-through steam generator (OTSG) for a small lead bismuth fast reactor (SLBFR) is established and verified, and the OTSG model is simplified by three different ...
Kai Xiao   +5 more
doaj   +1 more source

Neutron measurements of the fuel remaining in the TMI II once-through steam generators (OTSG'S) [PDF]

open access: yes, 1989
Polypropylene tubes containing a string of 18 copper rods were inserted into the lower head region and each J-leg of the two once-through steam generators (OTSG) of the unit two reactor at Three Mile Island. The object was to measure the neutron flux present in those regions and estimate the amount of residual fuel remaining in each OTSG.
Geelhood, B. D., Abel, K. H.
openaire   +2 more sources

Thermal Hydraulic Modeling of Once-Through Steam Generator by Two-Fluid U-Tube Steam Generator Code

open access: yesAtom Indonesia, 2017
The THERMIT U-tube steam generator (THERMIT-UTSG) code was used for evaluation for the parametric study of a scaled once-through pressurized water reactor steam generator (OTSG) made by Babcock & Wilcox.
A. Zeighami   +3 more
doaj   +1 more source

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