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CHANNEL ANALYSIS OF OPERATION POWER FLUCTUATION FOR AP1000 REACTOR

Muh. Darwis Isnaini, MDI and Deswandri, DS and Geni Rina Sunaryo, GRS (2017) CHANNEL ANALYSIS OF OPERATION POWER FLUCTUATION FOR AP1000 REACTOR. CHANNEL ANALYSIS OF OPERATION POWER FLUCTUATION FOR AP1000 REACTOR. pp. 9-15. ISSN ISSN: 2355-7524

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Abstract

ABSTRACT CHANNEL ANALYSIS OF OPERATION POWER FLUCTUATION FOR AP1000 REACTOR. A study to analyze the influence of operation power fluctuations on channel analysis of AP1000 reactor has been carried out. The calculation was conducted as channel analysis, because sub-channel analysis could not be done by using COBRA-EN code for transient or power as time function. The calculations found that hot channel at peak linear power of 42.66 kW/m could represent hot sub-channel with peak linear power of 48.88 kW/m, fairly well. Between the two models, it was found that the peak center line fuel temperature, the peak radial average fuel temperature and MDNBR were 5.54%, -2.83% and 6.35%, respectively. For calculations of operation power fluctuations the 12-3-3-3-0.5-0.5- 0.5-0.5-1 mode was used as a model for the hot channel using fuel and clad thermal properties as temperature functions. The results showed that on full power, 50-percent power and 110-percent power, the peak center line fuel temperatures were found to be 1697.25°C, 840.25°C and 1868.75°C, respectively. Moreover, the MDNBR were 2.65, 5.32 and 2.41, respectively. It was concluded that the reactor could be operated safely, while operation power fluctuation occurred. Keywords: channel analysis, operation power fluctuation, COBRA-EN, AP1000. ABSTRAK ANALISIS KANAL TERHADAP PENGARUH FLUKTUASI DAYA OPERASI PADA REAKTOR AP1000.Telah dilakukan suatu penelitian untuk mengetahui pengaruh fluktuasi daya operasi pada analisis kanal reaktor AP1000. Perhitungan dilakukan dengan analisis kanal, karena pada kondisi transien atau daya fungsi waktu, analisis sub kanal tidak bisa dilakukan dengan menggunakan kode COBRA-EN. Dari perhitungan diperoleh bahwa kanal panas dengan puncak daya linier 42,66 kW/m mampu mewakili sub kanal panas dengan puncak daya linier 48,88 kW/m dengan cukup baik. Antara kedua model, diperoleh perbedaan untuk temperatur puncak sumbu bahan bakar, temperatur puncak rerata radial bahan bakar dan MDNBR masing-masing sebesar 5,54%, -2,83% dan 6,35%. Pada perhitungan fluktuasi daya dengan model 12-3-3-3-0.5-0.5-0.5-0.5-1, pada kanal panas dengan sifat termal sebagai fungsi temperatur. Hasil analisis menunjukkan bahwa pada daya penuh, daya 50-persen dan daya 110-persen diperoleh temperatur puncak sumbu bahan bakar masing-masing sebesar 1697,25°C, 840,25°C dan 1868,75°C. Sedangkan MDNBR masing-masing sebesar 2,65, 5,32 dan 2,41. Dari hasil tersebut dapat disimpulkan bahwa reaktor dapat beroperasi dengan tetap selamat, ketika terjadi fluktuasi daya operasi. Kata kunci: analisis kanal, fluktuasi daya operasi, COBRA-EN, AP1000.

Item Type: Article
Subjects: Keselamatan dan Keamanan Nuklir
Divisions: Pusat Teknologi dan Keselamatan Reaktor Nuklir
Depositing User: USER PTKRN BATAN
Date Deposited: 08 May 2018 01:06
Last Modified: 08 May 2018 01:06
URI: http://repo-nkm.batan.go.id/id/eprint/1105

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