Study on secondary shutdown systems in Tehran research reactor

Jalali, Houda; Fadaei, Amir Hosein; Gharib, Morteza

doi:10.1016/j.nucengdes.2015.05.018

Cited by 8 publications

(1 citation statement)

References 8 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…But due to the lim ited re main ing op er at ing life en vis aged for TRR as an old re ac tor, de sign ing an SSS with min imum in ter fer ences and changes to the ex ist ing core struc ture is pre ferred. Very re cently, a study was under taken to com pare pos si ble meth ods for SSS which could be used in TRR [10]. Among them, use of heavy wa ter as re flec tor tank around the re ac tor core was selected as the op ti mum sys tem for TRR, but the study was lim ited to the first op er at ing core of TRR and the se lected method re quires ma jor changes to the ex ist ing core struc ture and grid plate that in the present work as a requirement we avoid it as much as possible.…”

Section: Introductionmentioning

confidence: 99%

A pragmatic approach towards designing a second shutdown system for Tehran research reactor

2016

View full text Add to dashboard Cite

One second shutdown system is proposed for the Tehran Research Reactor to achieve the goal of higher safety in compliance with current operational requirements and regulations and improve the overall reliability of the reactor shutdown system. The proposed second shutdown system is a diverse, independent shutdown system compared to the existing rod based one that intends to achieve and maintain sub-criticality condition with an enough shutdown margin in many of abnormal situations. It is designed as much as practical based on neutron absorber solution injection into the existing core while the changes and interferences with the existing core structure are kept to a minimum. Core neutronic calculations were performed using MCNPX 2.6.0 and MTR_PC package for the current operational core equipped with the second shutdown system, and one experiment was conducted in the Tehran Research Reactor to test the neutronic calculations. A good agreement was seen between theoretical results and experimental ones. In addition, capability of the second shutdown system in the case of occurrence of design basis accident in the Tehran Research Reactor is demonstrated using PARET program.

show abstract

Section: Introductionmentioning

confidence: 99%