Fitness-for-service assessment and failure analysis of AISI 304 demineralized-water (DM) pipeline weld crack

Zangeneh, Sh.; Lashgari, H.R.; Sharifi, H.

doi:10.1016/j.engfailanal.2019.104210

Cited by 12 publications

(2 citation statements)

References 10 publications

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“…Pada kolam reaktor, air pendingin dimurnikan oleh sistem pemurnian air kolam reaktor (KBE01) yang memiliki resin mixed bed yang berfungsi untuk menangkap produk aktivasi dan pengotor dari air kolam reaktor dan air dikembalikan ke kolam reaktor setelah dimurnikan. Air pendingin tersebut merupakan air bebas mineral dengan kualitas tertentu (Zangeneh et al 2020). Air bebas mineral atau air demineralisasi adalah air minim mineral yang diproses dengan cara mengurangi atau menghilangkan ion-ion mineral yang terkandung dalam air dengan cara pertukaran ion (Suryani et al 2022).…”

Section: Pendahuluanunclassified

Analisis Kadar Silika Dioksida pada Sistem Pemurnian Air Kolam Reaktor Serba Guna G.A. Siwabessy dengan Spektrofotometer UV-VIS

Aziz,

Utomo,

Ramadhina

2024

jrskt

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Abstrak Reaktor Serba Guna G.A. Siwabessy (RSG-GAS) adalah reaktor riset yang menggunakan air sebagai pendingin. Air pendingin reaktor berfungsi sebagai moderator dan media pemindah panas yang timbul sebagai akibat terjadinya reaksi fisi dalam teras reaktor. Air sebagai pendingin akan berhubungan langsung dengan material komponen atau struktur reaktor, sehingga memungkinkan akan terjadi reaksi kimia antara air dan material komponen atau struktur reaktor yang dapat menyebabkan terjadinya korosi atau timbulnya kerak pada permukaan logam sehingga menurunkan efisiensi pertukaran panas. Dalam penelitian ini, dilakukan pengamatan kadar silika dioksida (SiO2) dalam sistem pemurnian air kolam reaktor dan air sistem penyedia air bebas mineral yang digunakan sebagai pasokan air pendingin reaktor. Dari hasil kajian menunjukkan bahwa kadar SiO2 pada sistem pemurnian air kolam reaktor cukup tinggi yaitu sebesar 17,02 ppm. Kadar SiO2 yang tinggi pada sistem pemurnian air kolam reaktor berasal dari sistem penyedia air bebas mineral dan air baku PAM Puspiptek. Kadar SiO2 pada sistem air bebas mineral dapat berkurang setelah dilakukan regenerasi resin kation-anion dan resin mixed bed. Kata kunci: silika dioksida, siwabessy (RSG-GAS), spektrofotometer UV-VIS Abstract The G.A. Siwabessy Multi-Purpose Reactor (RSG-GAS) is a research reactor that uses water as a coolant. Reactor cooling water functions as a moderator and the media heat transfer of result of the fission reaction in the reactor core. Water as a coolant will be in direct contact with component materials or reactor structures, making it possible for chemical reactions to occur between water and component materials or reactor structures which can cause corrosion or scale to appear on the metal surface, thereby reducing heat exchange efficiency. In this research, observations were made of silica dioxide (SiO2) levels in reactor water purification system. The result of the study shows that the SiO2 level in the reactor water purification system are quite high, namely 17,02 ppm. The high SiO2 levels in the reactor purification system come from the mineral-free water system and PAM Puspiptek raw water. Silica dioxide (SiO2) levels in mineral-free water systems can be reduced after regeneration of cation-anion resins and mixed bed resins. Keywords: silica dioxide, siwabessy (RSG-GAS), spektrofotometer UV-VIS

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Section: Pendahuluanunclassified

Analisis Kadar Silika Dioksida pada Sistem Pemurnian Air Kolam Reaktor Serba Guna G.A. Siwabessy dengan Spektrofotometer UV-VIS

Aziz,

Utomo,

Ramadhina

2024

jrskt

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“…Moreover, the fitness-for-service assessment is equally vital, particularly in assessing the structural integrity of flowlines and pressure vessels. It is beneficial to hindering unprecedented flaws or defects during their service [2]. However, it is noteworthy to remember that the defects or anomalies primarily may appear to be corrosion.…”

Section: Introductionmentioning

confidence: 99%

Development of plant integrity inspection on the API 5L X65 material under humid conditions: emerging fitness for service assessment approach

Aribowo,

Soedarsono,

Sicilia

et al. 2024

EEJET

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This work reports the development and corresponding monitoring of pipeline integrity inspection in the arid zone, which typically experiences external corrosion. The recent method poses the challenge which indaquate to synchronize the internal and external corrosion monitoring of API 5L X65 material trunklines and flowlines owing to imperfect types of inspection on the external progressive damage only. Red-clay soil, soil porosity, oxygen content, and moisture become critical parameters for controlling the corrosion of the above conditions. The combination of ultrasonic guided wave test, visual inspection, and design life calculation is implemented to address the above challenges. Based on the results, trunkline B (12-inch) is more severe than A (18-inch), with the shorter measured remaining thickness and remaining life of 4.35 mm and 1.9 years. External corrosion and visual inspection results show that sand threatens corrosion. The external corrosion product is evident at the 3 and 6 o’clock positions, corresponding to the exposure of the buried pipelines to moisture. The maximum metal loss in the trunk is 14.5 %, which confirms the environment of trunkline B. The internal corrosion has little effect on the integrity of the plant. Despite the three fluid phases inside the flowlines and trunklines, the measured corrosion rate on the coupon is relatively lower. The highest recorded corrosion rate is 0.443 mmpy, while the contribution to internal corrosion from the rest of the monitor well is insufficient. This research is designed to model the strategy to utilize instrumentation of Ultrasonic tests and human intervention in corrosion mitigation

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Fitness-for-Service Assessment of Local Thin Area in a Line Pipe

Zangeneh

2021

J Fail. Anal. and Preven.

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Fitness-for-service assessment and failure analysis of AISI 304 demineralized-water (DM) pipeline weld crack

Cited by 12 publications

References 10 publications

Analisis Kadar Silika Dioksida pada Sistem Pemurnian Air Kolam Reaktor Serba Guna G.A. Siwabessy dengan Spektrofotometer UV-VIS

Analisis Kadar Silika Dioksida pada Sistem Pemurnian Air Kolam Reaktor Serba Guna G.A. Siwabessy dengan Spektrofotometer UV-VIS

Development of plant integrity inspection on the API 5L X65 material under humid conditions: emerging fitness for service assessment approach

Fitness-for-Service Assessment of Local Thin Area in a Line Pipe

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