Review of Bonded Rubber Flexible Hose Design Codes and Guidelines in Relation to Sea Water Intake Risers on FPSO Vessels

2016 ◽  
Author(s):  
Ian Craig
Keyword(s):  
Water Intake ◽  
Sea Water ◽  
Design Codes ◽  
Flexible Hose

How to Increase the Capacity of an Existing Sea Water Intake

2007 ◽  
Author(s):  
Said Mazaheri ◽  
Zeynab Sabouri Shargh
Keyword(s):  
Water Intake ◽  
Current Velocity ◽  
Power Plants ◽  
Sea Water ◽  
Flow Line ◽  
Gas Field ◽  
Cooling Systems ◽  
Northern Shore ◽  
The Persian Gulf

Sea Water Intakes supplying water for desalination, cooling systems, or other parts of many important industrial components, such as refineries, and power plants are usually built in the shore lines and close to the target systems. In some conditions, such as expansion of the refinery, or other plants and in order to avoid building a new sea water intake because of lack of the suitable land or expending a lot of money, it is required to enhance the amount of withdrawing water and increase the capacity of the existing sea water intake. In such conditions, several important factors such as, minimum required submergence depth for the pumps, maximum allowed current velocity at the entry of the suction chambers, maximum allowed current velocity inside the intake and near the filters, and the flow pattern should be checked. In this paper, it is tried to describe these factors and restrictions. In addition, a case study sea water intake located in South Pars Gas Field at the northern shore line of the Persian Gulf in the province of Boushehr, Iran, is considered and the mentioned factors and restrictions for increasing the capacity of sea water intake from 25,000 to 35,000 is discussed. Besides, a hydraulic mathematical model has been used to check the flow line of the developed system. At the end the results are discussed.

FLNG Cold Sea Water Intake Risers

2014 ◽  
Author(s):  
Ange Luppi ◽  
David Mayau
Keyword(s):  
Water Intake ◽  
Sea Water

scholarly journals MENGHITUNG BERAT BANDUL UNTUK MENGGERAKKAN BUTTERFLY VALVE (UV-7209) DI SEA WATER INTAKE DALAM MENCEGAH BACK PRESSURE PADA POMPA (G-7201) PADA KONDISI BLACKOUT

2021 ◽  
Vol 18 (01) ◽  
Author(s):  
Jerry Eka Mukti ◽  
Zulkifli . ◽  
Zulfikar .
Keyword(s):  
Water Intake ◽  
Sea Water ◽  
Back Pressure ◽  
Butterfly Valve

Air laut disuplai langsung dari lautan lepas menggunakan media pompa jenis submersible yang pada bagian discharge memliki tekanan 5,57 kg/cm2 dengan debit 11.600 m3/h melalui pipa 48” menuju pipa 66” dalam distribusinya ke berbagai unit. Dengan kapasitas tersebut, digunakan sebuah alat pengaman sistem distribusi, yang berguna untuk dapat menahan aliran balik dari sistem menuju discharge pompa pada kondisi listrik mati (blackout). Sebuah valve dengan menggunakan flange seberat 700  kg  dan  actuator  berupa  couter  weight  dengan  massa  933,334  kg  sebagai pemutus aliran mampu menahan aliran balik dengan daya 5621,564 hd, kecepatan 2,134  m/s  dan  tekanan  5,57  kg/cm2.  Pada kondisi  blackout  actuator  akan  jatuh kebawah  yang  menimbulkan  daya  sebesar  20,774  hp  untuk  menutup  90%  dan 20,517 hp untuk menutup penuh. Dari hasil daya tersebut maka valve akan membutuhkan waktu menutup 11,696 s pada 90% dan 14,349 s pada posisi full close.  Dengan   waktu   yang   diperoleh   maka   penggunaan   valve   masih   layak digunakan.Keyword : Air laut, blackout, counter weight, massa, daya.

New sea water intake filtration system

Desalination ◽  
1991 ◽  
Vol 82 (1-3) ◽  
pp. 281-301
Author(s):  
Muftah M. Elarbash
Keyword(s):  
Water Intake ◽  
Sea Water ◽  
Filtration System

scholarly journals Investigation of Salt Intrusion Condition in the Belat Estuary

2018 ◽  
Vol 150 ◽  
pp. 03005
Author(s):  
Jacqueline Isabella Gisen ◽  
Siti Syuhaida Adnan ◽  
Ahmad Amirul Ahmad Tajudin ◽  
Tian Xian Chan
Keyword(s):  
Fresh Water ◽  
Water Intake ◽  
Sea Water ◽  
Water Discharge ◽  
Spring Tide ◽  
Salinity Distribution ◽  
Salt Intrusion ◽  
Conducting Salt ◽  
High Precipitation ◽  
Fresh Water Discharge

Awareness on salt intrusion problem is still lacking in Malaysia due to high precipitation in the region. However, the El-Nino phenomenon that occurred recently has caused extremely low fresh water discharge in the Kuantan River which allowed the sea water to intrude further into its water intake region. Consequently, the Belat River may become potential water resources alternative to build new water intake station for the water supply in the Kuantan River Basin. The aims of this study are to: 1) investigate the salinity distribution in the Belat Estuary; 2) evaluate the applicability of the 1-D analytical salt intrusion solution; 3) determine the calibration parameters in the salt intrusion model. Salt intrusion measurements was conducted during the dry season at spring tide when the fresh water discharge is the minimum. Collection of data such as hydrological data, river cross section and salinity were collected to be used in the salt intrusion analysis. The results obtained show good agreement between the simulated and observed salinity distribution in the estuary with low RMSE and high NSE values. This indicates that the model is reliable and can become an important tool for water manager in conducting salt intrusion study for this area.

Reduction in Fatigue Strength of Arc Welded Aluminium 5083-H111 on Immersion in NaCl

2014 ◽  
Vol 891-892 ◽  
pp. 1469-1475
Author(s):  
Madeleine du Toit ◽  
Kalenda Mutombo
Keyword(s):  
Sea Water ◽  
Base Material ◽  
Fatigue Loading ◽  
Ambient Air ◽  
Fatigue Behaviour ◽  
Design Codes ◽  
Corrosive Environment ◽  
Nacl Solution ◽  
Fatigue Design ◽  
Reference Curves

The design of welded aluminium structures subjected to fatigue loading is usually carried out on the basis of reference fatigue curves published in design codes. The reference curves are usually relevant to dynamic loading in ambient air and make provision for the presence of a corrosive environment by downgrading the detail category for a particular joint type. This investigation studied the corrosion-fatigue behaviour of Al 5083-H111 welded using ER5356 wire. Comparison between experimentally determined fatigue curves and reference fatigue design curves published in Eurocode 9 confirms that 5083-H111 welds display significantly lower reference fatigue strengths than unwelded base material. Immersion in a NaCl solution during testing reduced the reference fatigue strengths even further. The reduction in detail category number recommended in Eurocode 9 for aluminium butt welds on immersion in sea water appears suitable (or even marginally conservative) for the 5XXX series Al-Mg-Mn welds examined in this investigation.

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