X-ray diffraction apparatus for life assessment of boiler feed water pump shaftHayashi, M., Ueyama, Y., Hashimoto, Y., Ogiso, K. and Sasaki, K. J. Soc. Mater. Sci. Jpn (June 1993) 42(477), 634–640 (in Japanese)

1994 ◽  
Vol 16 (7) ◽  
pp. 518-519
Keyword(s):  
Life Assessment ◽  
Feed Water ◽  
Water Pump ◽  
X Ray Diffraction ◽  
X Ray ◽  
Boiler Feed Water

scholarly journals X-Ray diffraction Apparatus for Life Assessment of Boiler Feed Water Pump Shaft.

1993 ◽  
Vol 42 (477) ◽  
pp. 634-640
Author(s):  
Makoto HAYASHI ◽  
Yoshiharu UEYAMA ◽  
Yoshiyuki HASHIMOTO ◽  
Katsuhiko OGISO ◽  
Katsunari SASAKI
Keyword(s):  
Life Assessment ◽  
Feed Water ◽  
Water Pump ◽  
X Ray Diffraction ◽  
X Ray ◽  
Pump Shaft ◽  
Boiler Feed Water

Assessment of Fatigue Life for High-Temperature Pipeline Welds Using X-Ray Diffraction Technique

2007 ◽  
Vol 353-358 ◽  
pp. 130-133
Author(s):  
Keun Bong Yoo ◽  
Jae Hoon Kim
Keyword(s):  
High Temperature ◽  
Fatigue Life ◽  
Fatigue Damage ◽  
Power Plants ◽  
Low Cycle Fatigue ◽  
Diffraction Method ◽  
Life Assessment ◽  
Fatigue Properties ◽  
X Ray Diffraction ◽  
X Ray

The objective of this study is to examine the feasibility of the X-ray diffraction method for the fatigue life assessment of high-temperature steel pipes used for main steam pipelines, re-heater pipelines and headers etc. in power plants. In this study, X-ray diffraction tests were performed on the specimens simulated for low cycle fatigue damage, in order to estimate fatigue properties at the various stages of fatigue life. As a result of X-ray diffraction tests, it was confirmed that the full width at the half maximum (FWHM) decreased with an increase in the fatigue life ratio, and that the FWHM and the residual stress due to fatigue damage were algebraically linearly related to the fatigue life ratio. From this relationship, a direct assessment of the remaining fatigue life was feasible.

Assessment of Fatigue Life for High-Temperature Pipeline Welds by Non-Destructive Method

2006 ◽  
Vol 326-328 ◽  
pp. 497-500
Author(s):  
Keun Bong Yoo ◽  
Hyun Sun Choi ◽  
Eui Hyun Kim ◽  
Sun Young Cho ◽  
Jae Hoon Kim
Keyword(s):  
High Temperature ◽  
Fatigue Life ◽  
Fatigue Damage ◽  
Maximum Intensity ◽  
Life Assessment ◽  
Full Width ◽  
Half Maximum ◽  
X Ray Diffraction ◽  
X Ray ◽  
Half Maximum Intensity

The objective of this study is to estimate the feasibility of X-ray diffraction method application for fatigue life assessment of the high-temperature pipeline steel such as main steam pipe, re-heater pipe and header etc. in power plant. In this study, X-ray diffraction tests using various types of specimen simulated low cycle fatigue damage were performed in order to analyze fatigue properties when fatigue damage conditions become various stages such as 1/4, 1/2 and 3/4 of fatigue life, respectively. As a result of X-ray diffraction tests for specimens simulated fatigue damages, we conformed that the variation of the full width at half maximum intensity decreased in proportion to the increase of fatigue life ratio. And also, the ratio of the full width at half maximum intensity due to fatigue damage has linear relationship with fatigue life ratio algebraically. From this relationship, it was suggested that direct expectation of the life consumption rate was feasible.

scholarly journals STUDI DINAMIKA ROTOR POMPA PENGISI AIR KETEL (BFWP) 6 TINGKAT MENGGUNAKAN PERANGKAT LUNAK

2017 ◽  
Vol 8 (1) ◽  
pp. 209-218
Author(s):  
Fatkur Rachmanu
Keyword(s):  
Critical Speed ◽  
Feed Water ◽  
Water Pump ◽  
Hydrodynamic Bearing ◽  
Unbalance Response ◽  
Boiler Feed Water

Pompa multi tingkat untuk mengatasi kebutuhan fluida cair agar dapat mengalirkan ke tempat yang elevasinya sangat tinggi atau sangat jauh atau mempunyai perbedaan tekanan terhadap sisi masuk dan keluar pompa yang sangat tinggi. Pompa multi tingkat digunakan sebagai pompa pengisi air ketel (Boiler Feed Water Pump) dengan 6 buah/tingkat baling-baling (impeller) dan di hubungkan dengan kopling menggunakan penggerak mula turbin uap yang mempunyai variasi kecepatan 4000 rpm   hingga 6000 rpm. Dengan daya input pompa sebesar 831.050 Watt. Torsi putar untuk putaran 6000 Rpm adalah1323,33 Nm. Ditopang hydrodynamic bearing di kedua ujung poros. Pada penelitian ini diamati frekuensi pribadi pada poros rotor, menentukan modeshape poros rotor (Critical speed map ), respon takseimbang(Unbalance response) pada bearing station. Menggunakan Software-X berupa perhitungan perangkat lunak dinamika rotor dibandingkan dengan software Solidworksmenggunakan metode elemen hingga. Studi dinamika rotor mempunyai kecepatan kritis sebesar 2750 CPM dengan kekakuan bearing 1x106 lbf/inchi pada mode 1. Pada mode no.7 akan terjadi simpangan amplitudo yang besar.

scholarly journals PROSES PRODUKSI BODY UPPER GENERATING DRUM TYPE CAP.120 T/H

Otopro ◽  
2019 ◽  
Vol 14 (2) ◽  
pp. 40
Author(s):  
Anggra Fiveriati ◽  
Tri Hartutuk Ningsih ◽  
Abdul Ghoni
Keyword(s):  
Tube Wall ◽  
Feed Water ◽  
Water Pump ◽  
Water Tube ◽  
Control Product ◽  
Boiler Feed Water

Jurnal ini menjelaskan proses produksi body upper generating drum type CAP.120 T/H. Komponen upper generating drum adalah salah satu komponen pada boiler pipa air yang berfungsi sebagai reservoir campuran air dan uap air, dan juga berfungsi untuk memisahkan uap air dengan air pada proses pembentukan uap superheater. Namun tidak semua boiler pipa air (water tube) yang menggunakan upper generating drum ini. Boiler supercritical beroperasi pada tekanan sangat tinggi di atas tekanan kritis, sehingga tidak dimungkinkan terbentuk gelembung-gelembung uap air, karena itulah boiler supercritical tidak memerlukan upper generating drum untuk memisahkan air dengan uap air. Air feed water yang disupply oleh boiler feed water pump, masuk ke boiler menuju economiser dan selanjutnya masuk ke upper generating drum. Dari upper generating drum, air dipompa oleh pompa sirkulasi boiler menuju ke raiser tube/wall tube untuk dapat mencapai fase uap saturasi. Dari raiser tube air kembali masuk ke upper generating drum. Proses Proses produksi body upper generating drum di PT. Bromo Steel (PT. BOSTO) Indonesia melewati beberapa tahapan yaitu: persiapan material, persiapan marking cutting, proses marking cutting, proses rolling, proses welding, dan terakhir yaitu proses control product (QC) untuk menjamin kualitas pengerjaan.

scholarly journals Analysis of Corrosion Products Transported through Secondary Side of Candu Steam Generator Using GIXRD

2020 ◽  
Vol 71 (2) ◽  
pp. 99-104
Author(s):  
Alice Dinu ◽  
Mariana Tunaru
Keyword(s):  
Iron Oxide ◽  
Steam Generator ◽  
Corrosion Products ◽  
Feed Water ◽  
X Ray Diffraction ◽  
Blow Down ◽  
X Ray ◽  
Oxide Hydroxide ◽  
Secondary Side ◽  
Millipore Filters

To verify the chemistry of secondary side of CANDU steam generators, Millipore filters are used to sampling from condensing extraction pump, feed water header and blow down of steam generator. These filters retain the corrosion products as very fine particles and are used as samples in chemistry water control. X-Ray diffraction (XRD) is the most used technique that can provide information about the phase composition of analyzed samples. Because the crud layers on the Millipore filters are very thin, to identify the corrosion products Grazing Incidence X-Ray diffraction (GIXRD) technique was used. The following compounds have identified: magnetite (Fe3O4), hematite (Fe2O3), and iron oxide hydroxide (FeOOH). It was observed a brown-reddish background specific to hematite and iron oxide hydroxide, especially for filters extracted from condensing extraction pump. The black colour of crud present on filters extracted from feed water header and blow down of steam generator shows the presence of magnetite.

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