Research in Ballast Water Exchange for a Jack-Up Drilling Unit

2018 ◽  
Author(s):  
Li Chunhui ◽  
Zhang Xuehui ◽  
Xiao Jianwei ◽  
Zhou Bo ◽  
Cheng Lei ◽  
...  
Keyword(s):  
Water Management ◽  
Ballast Water ◽  
Water Exchange ◽  
Sequential Method ◽  
Whole Process ◽  
Major Vessel ◽  
The Stability ◽  
Jack Up ◽  
Ballast Water Management ◽  
Flag State

A new IMO Ballast Water Management Convention was adopted and came into force in 8th Sep. 2017. The IBWMC (International Ballast Water Convention) covered four major vessel types: Single/Double Hull Tanker, Bulk Carrier and Containership. Research in BWM (Ballast Water Management) of Jack-up Platform is rare. The Jack up was built prior to the date which Convention comes into force and was delivered after date, so BWM of the Jack up is focused on Ballast Water Exchange Plan, which should be approved by Flag State or by CLASS (if authorized by Flag State). In this paper, a sequential method is hosen to exchange ballast water, and calculation is carried out to ensure that the stability is maintained in whole process.

scholarly journals Using Onboard-Produced Drinking Water to Achieve Ballast-Free Management

2021 ◽  
Vol 13 (14) ◽  
pp. 7648
Author(s):  
Kun-Tu Lu ◽  
Hon-Kit Lui ◽  
Chen-Tung Arthur Chen ◽  
Li-Lian Liu ◽  
Lei Yang ◽  
...  
Keyword(s):  
Water Management ◽  
Drinking Water ◽  
Ballast Water ◽  
Water Tank ◽  
Ballast Tank ◽  
International Convention ◽  
Small Vessels ◽  
The Stability ◽  
Control And Management ◽  
Ballast Water Management

Based on the International Convention for the Control and Management of Ships’ Ballast Water and Sediments (the Ballast Water Management Convention, or BWM Convention) of the International Maritime Organization, from 8 September 2017, all ships must have an approved Ballast Water Management Treatment System (BWTS) to prevent the invasion of alien species through the discharge of ballast. Generally speaking, the need for an approved BWTS is limited to large vessels, as they are too large or too expensive for small vessels to install. This study aims to propose a simple ballast-free approach for small vessels (e.g., tugs, workboats, research vessels) that require ballast to compensate for the weight loss of fuel when sailing. Our approach involves refitting the dedicated ballast tank of these small vessels to be drinking water tanks and filling the tanks with onboard-generated distilled or reverse osmosis water to adjust the stability of the ships. We assessed our approach using three vessels. Two ships using our proposed method were certified by the American Bureau of Shipping as containing no ballast water tank, and not being subject to the BWM Convention. This study provides an environmentally harmless, easy to use, and economical approach for small vessels to comply with the BWM Convention.

Analysis of Yielding and Buckling Strength of a Minimal Ballast Water Crude Oil Tanker

2018 ◽  
Author(s):  
Xueqian Zhou ◽  
Hexing Song ◽  
Chenfeng Li ◽  
Huilong Ren ◽  
Siyu Wang
Keyword(s):  
Water Management ◽  
Water Pollution ◽  
Crude Oil ◽  
Ballast Water ◽  
Structural Strength ◽  
Buckling Strength ◽  
Trapezoidal Shape ◽  
The Cost ◽  
Oil Tanker ◽  
Ballast Water Management

The minimal ballast water crude oil tanker has the design of a trapezoidal-shape inclined bilge entirely instead of the regular U-shaped tanker, also known as the trapezoidal tanker, which reduces the amount of the ballast water. This type of ship does not only reduce the cost on ballast water management, but also is beneficial to the environment for reducing the risk of water pollution. Since it is a new design, there are no applicable specifications for the assessment of structural strength at present. In order to find out characteristics of the yielding and buckling strength of this type of ship, the strength of a conventional tanker and a trapezoidal tanker are calculated by a finite element method and then compared with a variety of cases. It can be seen that the trapezoidal tanker has lots of advantages in strength and lighting weight.

scholarly journals Diagnostics in ballast water management

2018 ◽  
Vol 182 ◽  
pp. 02004 ◽  
Author(s):  
Marcin Bielski ◽  
Jacek Wachowicz ◽  
Ryszard Bielski ◽  
Arkadiusz Adamczyk ◽  
Hendra Jantanata
Keyword(s):  
Water Management ◽  
Invasive Species ◽  
Natural Environment ◽  
Ballast Water ◽  
Environmental Safety ◽  
The Face ◽  
Ballast Tanks ◽  
Ballast Water Management

Diagnostics in ballast water management is the main remedy to protect against the threat of spreading invasive species that can be carried in ships' ballast tanks. This phenomenon is getting better known and understood. New and more effective methods of preventing threats related to this are being developed. Procedures are created to ensure environmental safety in the face of ever-increasing transport by sea. The article characterizes both the background of the problem, basic diagnostic medics used in ballast water management, as well as procedures and basic techniques used to ensure the safety of the natural environment..

scholarly journals ATP assay for rapid onboard testing to detect living microorganisms in Ballast Water

2017 ◽  
Author(s):  
Seungshic Yum ◽  
Bong Gil Hyun ◽  
Kitae Rhie ◽  
Kyoungsoon Shin
Keyword(s):  
Water Management ◽  
Water Treatment ◽  
Cell Volume ◽  
Ballast Water ◽  
Treatment System ◽  
Diatom Species ◽  
Water Treatment System ◽  
Atp Assay ◽  
Ballast Water Treatment ◽  
Ballast Water Management

Rapid and simple analytical methods for viable microorganism detection in ballast water are required to evaluate the efficiency of ballast water treatment system. During the course of systematic investigation of the cytotoxicity and apoptosis assays, it was found that the adenosine triphosphate (ATP) and luminescence based cell viability assay, in other word, an ATP assay was the most sensitive and applicable to ballast water management (BWM). The assay was applied to cultured microalgae samples, and it could detect the existence of 5 viable cells in 100 μl. Comparably low luminescent values were detected in two cultured diatom species than in cultured dinoflagellates. This result might be caused by the small cell volume in diatom species. Following a regression model between ATP concentration and cell volume, an ATP guideline (876 – 109246 relative luminescence units: RLU) was developed for the evaluation of treated ballast water. ATP assay was also applied to the evaluation of ballast water treatment system (BWTS). The luminescence value which obtained from the ATP assay also showed a good correlation with the presence of living natural plankton cells with comparably low luminescence values than the cultured species. The low ATP concentration in natural plankton cells may reflect a decline in their biological activity because of extended exposure to dark conditions. ATP assay could be a suitable method for the monitoring of ballast water management compliance even though the results of this study need further validation.

Sign in / Sign up

Export Citation Format

Share Document