Library Subscription: Guest
Begell Digital Portal Begell Digital Library eBooks Journals References & Proceedings Research Collections
International Journal of Energy for a Clean Environment
SJR: 0.195 SNIP: 0.435 CiteScore™: 0.74

ISSN Print: 2150-3621
ISSN Online: 2150-363X

International Journal of Energy for a Clean Environment

Formerly Known as Clean Air: International Journal on Energy for a Clean Environment

DOI: 10.1615/InterJEnerCleanEnv.2013006206
pages 153-167

THERMOSIPHON−BASED PASSIVE HEAT REMOVAL SYSTEM FOR SIMULTANEOUS COOLDOWN OF REACTOR AND PRESSURIZER

Igor Sviridenko
Sevastopol State University, Sevastopol, Russia
Organizer of Annual International Scientific and Practical Conference on Nuclear Power "Safety, Effectiveness, Resource of Nuclear Power Plants", Sevastopol, Ukraine
Dmitriy V. Shevielov
Sevastopol Branch of Scientific and Technical Support Separate Subdivision "Scientific and Technical Center" of State Enterprise National Nuclear Energy Generating Company "Energoatom", Sevastopol, Ukraine

ABSTRACT

The article discusses a proposal to introduce an autonomous passive heat removal system (PHRS) to increase the safety of nuclear power plants with the water-moderated water-cooled power reactor (WWER−1000) nuclear reactor. The residual heat is removed via heat exchangers composed from two-phase thermosiphons. The system operability can be maintained even under loss of all external power sources. The advantage of the system is its direct connection with the primary coolant circuit that provides the system compatibility with all types of light-water reactors. The system has three safety barriers to prevent activity release into the environment for any expected combinations of failures. The results of the analytical modeling carried out show that the suggested passive system provides conditions for timely injection of boric acid from hydro-accumulators (HAs) and thus sufficient subcriticality during the entire emergency process simultaneously with maintaining subcooling of the primary coolant. The results of analytical modeling of emergency cooldown of the reactor installation during a complete, long-term blackout event are presented. It is proved that the proposed PHRS provides efficient heat sink and primary depressurization. That provides conditions for actuation of the emergency core cooling system (ECCS) HAs and maintains adequate subcriticality during the transient along with maintaining subcooling conditions of the primary coolant in the reactor core.


Articles with similar content:

AUTONOMOUS THERMOSIPHON SYSTEM FOR WWER 1000 COOLDOWN
Heat Pipe Science and Technology, An International Journal, Vol.2, 2011, issue 1-4
Igor Sviridenko, Dmitriy V. Shevielov
ACTUATION ALGORITHM OF THE AUTONOMOUS PASSIVE RESIDUAL HEAT REMOVAL THERMOSIPHON SYSTEM FOR WWER REACTORS
International Journal of Energy for a Clean Environment, Vol.18, 2017, issue 4
Igor Sviridenko
Thermal-hydraulic analysis of loss of long-term core cooling accidents at RBMK-1500
International Heat Transfer Conference 12, Vol.56, 2002, issue
Eugenijus Uspuras, Algirdas Kaliatka
ANALYSIS OF THE EFFECT OF PASSIVE SAFETY SYSTEM ON THE INTEGRITY OF THE CONTAINMENT IN CONDITIONS OF SEVERE ACCIDENT
International Journal of Energy for a Clean Environment, Vol.13, 2012, issue 1-4
Vladimir A. Gerliga, Igor Sviridenko, Alexander S. Balashevsky, Dmitriy V. Shevielov
STUDY OF IN-VESSEL PHASE OF SEVERE ACCIDENT PHENOMENA OF VVER-1000/V412 WITH AND WITHOUT REFLOOD CONDITIONS
Proceedings of the 24th National and 2nd International ISHMT-ASTFE Heat and Mass Transfer Conference (IHMTC-2017), Vol.0, 2017, issue
Deb Mukhopadhyay, H. P. Rammohan , Mithilesh Kumar , Abhishek Kumar , S.M. Saxena , Sitesh Sil