Operation of the vessel

In this study an optimal weather routing model (OWR) considers the meteorological and oceanographic information, ship’s characteristics combined with adaptive Bacterial Foraging Optimization Algorithm will be proposed and applied for ship’ navigation. The simulation results will be presented to show the effectiveness as well as the reliability of this model. The OWR will make it possible for safe navigation, effective operation, energy efficiency and reduce emission from vessel.

4p visergey 02-04-2024 1 0   Download

Continued part 1, part 2 of ebook "Surface production operations: Facility piping and pipeline systems (Volume III)" includes the following main contents: Chapter 8 - Relief, vent and flare disposal systems; Chapter 9 - Piping system design, layout, supports, and piping vessels and equipment; Chapter 10 - Pipe expansion and flexibility; Chapter 11 - Pipeline systems; Chapter 12 - Pressure testing and nondestructive examination; Chapter 13 - Pipeline pigging; Chapter 14 - Pipeline operations;...

558p khuynhlinhnguyet1009 05-04-2024 5 1   Download

This specification covers 8 and 9 % nickel-alloy steel forged or rolled flanges, fittings, valves, and parts intended for use in welded pressure vessels for low-temperature service. The specification is applicable to forgings with maximum section thickness of 3 in. [75 mm] in the double normalized and tempered condition and 5 in. [125 mm] in the quenched and tempered condition. Forgings under this specification are intended for service at operating temperatures not lower than −320 °F [−196 °C] for Type I or −275 °F [−170 °C] for Type II or higher than 250 °F [121 °C].

4p hth_hn_vn 10-12-2023 8 3   Download

This specification covers nonstandard as-forged fittings, valve components, and parts for glass-lined piping and pressure vessel service. Mechanical properties are certified on the basis of test material subjected to heat treatments to simulate glass-coating operations.

3p hth_hn_vn 10-12-2023 7 4   Download

Part 1 book "Fundamentals of congenital minimally invasive cardiac surgery" includes content: The evolution of minimally invasive cardiac surgery for patients with chds in our institution anesthesia for minimally invasive cardiac surgery, surgical instruments and materials, operative echocardiography, peripheral cardiopulmonary bypass - the percutaneous cannulation of the internal jugular vein, peripheral cardiopulmonary bypass - the surgical isolation and cannulation of femoral vessels.

79p oursky01 24-07-2023 10 2   Download

Objectives of this study: To determine the optimum solid concentration that can be used in mixing vessel under baffled and unbaffled conditions using various impeller types; To study the effects of design and operating conditions on the suspension performance; To improve the minerals treatment processes while maintaining as much as possible the current design to minimize the operating costs.

125p runthenight07 01-03-2023 5 2   Download

The main aims of this study are to: understand the phenomena of isolated mixing regions (IMRs) in Newtonian fluids agitated in mechanically stirred vessels, in particular, the formation of core torus, using experimental studies; investigate the behavior of IMRs structures by manipulating the operating variables such as impeller rotational speed and direction, as well as geometrical variables such as impeller types and baffle location; investigate the temporal chaotic mixing using different speed modulation protocols.

94p runthenight07 01-03-2023 7 2   Download

In the paper, the Station Blackout accident accompanied with IVR implementation has been analyzed for VVER1000/V320 reactor by using MELCOR code 1.8.6. Four SBO scenarios have been proposed for the study, among, two SBO scenarios with long-term high pressure showed that the failure of lower head occurred early due to high pressure and high temperature causing creep-rupture, and the external cooling only delayed the failure of lower vessel.

15p vidumbledore 06-01-2023 23 2   Download

Residual stress in the welds that attach Control Rod Drive Mechanism nozzles into the upper head of a PWR reactor vessel can influence the vessel’s structural integrity and initiate Primary Water Stress Corrosion Cracking. PWSCC at Alloy 600 CRDM nozzles has caused primary coolant leakage in operating PWRs. We have used Deep Hole Drilling to characterise residual stresses in a PWR vessel head.

9p vironald 15-12-2022 11 3   Download

Lecture Drilling engineering: Introduction to deepwater well control. By the end of this lecture you should be able to describe the key aspects of well control in deepwater operations; the hazards, risks, probability and consequence of well control incidents; plans and processes will be used to manage and control well control incidents;...

15p hanthienngao 15-04-2022 11 2   Download

In this study, the performance and exhaust emissions of the marine main engine (ME) of a large cargo vessel operating on the east coast of Australia by numerical thermodynamic simulation were investigated. The simulation were validated using on-board measurements of the ME conducted in October and November 2015 on a large cargo ship cruising between Ports of Brisbane, Gladstone and Newcastle.

5p viwilliamleiding 04-12-2021 30 1   Download

The article proposes a system of simulation for the formation of crews of ships. The main directions of simulation modeling are described, which allow to optimize the volume of work of the team during the operation of the vessel.

13p orianahuynh 08-06-2020 29 0   Download

Marine fisheries of India has been witnessed with substantial increase of fishing effort and fishing efficiency during the last five decades which resulted in overexploitation of fish stocks together with the increase of fossil fuel burning and CO2 emission into the atmosphere. The present study covered three important fishing harbours of Kerala to reveal an estimation of CO2 footprint (considering the emission of CO2 only during the fishing operation) by the mechanised fishing trawlers which showed a considerable higher value than the previous studies.

6p nguathienthan5 04-06-2020 8 1   Download

The main objective of this research was to develop a solar energy based thermal reservoir cum heat exchanger using thermic fluid viz. paraffin oil as thermal heat storage and heat transfer medium for generation of hot water which can be used for milk processing operation like pasteurization of milk.

12p caygaocaolon2 14-03-2020 17 2   Download

Alexandria port is the main Egyptian port at the Mediterranean Sea. It is connected to the Nile River through Nubaria canal, which is a main irrigation canal. The canal was designed to irrigate eight hundred thousand acres of agricultural lands, along its course which extends 100 km. The canal has three barrages and four locks to control the flow and allow light navigation by some small barges. Recently, it was decided to improve the locks located on the canal. More than 40 million US$ was invested in these projects.

9p kethamoi1 17-11-2019 19 0   Download

The evaluation of feasibility, safety, and outcomes of single port laparoscopic colectomy (SPLC) for colonic cancer. Prospective study of 114 patients with colonic cancer (84 right side, 17 left side, and 13 sigmoid colon) who underwent SPLC between October 2010 and October 2016 in Hue Central Hospital. Results: Mean age of patients was 56.1±15.2 (25-87 years), male/female ratio was 70/44. Mean BMI was 23.5±2.2 kg/m2 . Procedures included 84 right hemi-colectomies (73.7%), 17 left hemi-colectomies (14.9%), and 13 sigmoidectomies (11.4%).

5p caygaocaolon1 13-11-2019 26 0   Download

The most important ageing effect on the reactor pressure vessel (RPV) is radiation embrittlement, which is mainly caused by fast neutrons during operation lifetime of nuclear reactors. The aim of this study was to investigate the DPA (displacement per atom) rate, an important parameter describing radiation damage to the RPV, and identify the position of the maximum DPA rate in the RPV of the VVER-1000/V320 reactor using the Monte Carlo code MCNP5.

10p vineptune2711 04-11-2019 10 0   Download

Controlling and reduction of the bleeding are one of the key factors in liver resection, to ensure a safe resection, and to reduce post-operative complications, especially post-operative liver failure. Hepatic vascular clamping helps to reduce intra-operative bleeding. The main disadvantage of this is parenchymal damage due to ischemia and reperfusion after clamping.

9p viathena2711 10-10-2019 12 1   Download

The precise prediction of radiation embrittlement of aged reactor pressure vessels (RPVs) is a prerequisite for the long-term operation of nuclear power plants beyond their original design life. The expiration of the operation licenses for Korean reactors the RPVs of which are made from SA533B-1 plates and welds is imminent. Korean regulatory rules have adopted the US Nuclear Regulatory Commission's transition temperature shift (TTS) models to the prediction of the embrittlement of Korean reactor pressure vessels.

4p minhxaminhyeu4 26-06-2019 15 0   Download

In Vietnam the number of fishing vessels, especially near the shore, has increased continuously, despite the Government’s target of a reduction. In particular, 80% of the fishing vessels operating in the coastal areas make up only 11% of the exclusive economic zone.

20p danhnguyentuongvi27 18-12-2018 15 0   Download