Success Story of First Malaysia Flare Tips Decommissioning in Sarawak Offshore Field Platform

2021 ◽  
Author(s):  
M Sahir Ahmad Shatiry ◽  
Tajul Ekram Tajul Arif ◽  
Norhafizah Baharuddin ◽  
Firdaus Harun ◽  
M Noraznan Asmadi ◽  
...  
Keyword(s):  
High Pressure ◽  
Offshore Platform ◽  
Suitable Method ◽  
Single Type ◽  
Concept Selection ◽  
Separation System ◽  
Success Story ◽  
Ignition System ◽  
Offshore Field ◽  
Lower Deck

Abstract The project was for part production enhancement project which to cater for brownfield & greenfield project. To cater to the production (oil) increment for the brownfield project, the existing flare tips and separation system need to be upgraded with higher capacity. The inclusive project was upgrading existing. Part of the scope was decommissioning the existing flare tip and associated system, e.g., ignition panel and ignition pipe. The project will decommission the current flare tips and replaced it with new higher capacity flare tips with Low Pressure (LP) & High Pressure (HP) connection. The existing flare panel was a single-type ignition system. The existing flare tip had LP & HP tip with 8″ inch size; the weight for both tip was estimated at 300 kg. The concept selection was discussed on the suitable method to lifting down the decommissioning flare tip at the offshore platform. There were 2 suitable techniques selected at the initial of the concept selection. One was lifting down the decommissioning flare tip directly from flare boom to vessel. Another method was manual rigging of the flare tips from the flare boom to the lower deck. After several discussions and workshops, it was decided to proceed with manual rigging of the decommissioning flare tip to the safe deck area. The removal of the decommissioning flare tip was performed during turnaround. The total days for the overall activity of the decommissioning & installation of the new flare tip was 3 days, 2 days ahead from planned duration 5 days.

Simple Continuous High-Pressure Hydrogen Production and Separation System from Formic Acid under Mild Temperatures

ChemCatChem ◽  
2016 ◽  
Vol 8 (5) ◽  
pp. 874-874
Author(s):  
Masayuki Iguchi ◽  
Yuichiro Himeda ◽  
Yuichi Manaka ◽  
Koichi Matsuoka ◽  
Hajime Kawanami
Keyword(s):  
High Pressure ◽  
Hydrogen Production ◽  
Formic Acid ◽  
Separation System ◽  
Pressure Hydrogen

High Pressure Liquid Chromatographic Determination of Aflatoxins by Using Radial Compression Separation

1982 ◽  
Vol 65 (3) ◽  
pp. 665-671
Author(s):  
Eric C Shepherd ◽  
Timothy D Phillips ◽  
Norman D Heidelbaugh ◽  
A Wallace Hayes
Keyword(s):  
High Pressure ◽  
Retention Time ◽  
Rapid Determination ◽  
Chromatographic Determination ◽  
Peak Height ◽  
Radial Compression ◽  
Good Resolution ◽  
Separation System ◽  
Flow Rates

Abstract A rapid method for the determination of aflatoxins was developed using high pressure liquid chromatography and a radial compression separation system. A standard solution of aflatoxins B1, B1, G1, G2, and M1 was analyzed at flow rates of 2.0 and 6.0 mL/min. Retention times, peak heights, and peak areas were reproducible over a 3-day period. Coefficients of variation for aflatoxin B1 at 2.0 and 6.0 mL/min were, respectively, 1.04 and 0.87% (retention time); 2.9 and 4.7% (peak height); and 8.2 and 4.7% (peak area). At 6.0 mL/min there was an approximate 25% loss in sensitivity but a greater than 50% reduction in retention time. Separation of all the aflatoxins was excellent using a dual flow rate of 2.0 mL/min with a change to 8.0 mL/min at 15 min post-injection. The applicability of the radial compression separation system for the rapid determination of aflatoxins in human tissues was also tested. Spiked samples of liver, serum, and urine showed good resolution of all aflatoxin peaks at the higher flow rates.

High Pressure Liquid Chromatographic Determination of Zearalenone in Chicken Tissues

1983 ◽  
Vol 66 (1) ◽  
pp. 102-104
Author(s):  
G Vincent Turner ◽  
Timothy D Phillips ◽  
Norman D Heidelbaugh ◽  
Leon H Russell
Keyword(s):  
High Pressure ◽  
Kidney Tissue ◽  
Chromatographic Determination ◽  
Radial Compression ◽  
Separation System ◽  
High Pressure Liquid Chromatographic ◽  
Chicken Fat ◽  
Liquid Chromatographic Determination ◽  
Liquid Chromatographic

Abstract A method is reported for the extraction and analysis of zearalenone in chicken fat, heart muscle, and kidney tissue by using high pressure liquid chromatography (HPLC). Zearalenone is extracted with acetonitrile, cleaned up with hexane, and extracted further with ethyl acetate. Zearalenone is determined by HPLC using a reverse phase radial compression separation system, an ultraviolet absorbance detector, and a mobile phase of acetonitrile-water (60 + 40) (v/v). Recoveries of zearalenone added at levels from 50 to 200 ng/g are in the range 82.6-95.1%.

Systematic Development and Optimization of an in-situ Gelling System for Moxifloxacin Ocular Nanosuspension using High-pressure Homogenization with an Improved Encapsulation Efficiency

2018 ◽  
Vol 24 (13) ◽  
pp. 1434-1445 ◽  
Author(s):  
Lalit Kumar Khurana ◽  
Romi Singh ◽  
Harinder Singh ◽  
Manju Sharma
Keyword(s):  
High Pressure ◽  
Process Parameters ◽  
Encapsulation Efficiency ◽  
Quality By Design ◽  
Polynomial Equation ◽  
Single Type ◽  
Application Site ◽  
High Pressure Homogenization ◽  
In Situ Gelling

Background: The objective of this study was to apply Quality by Design (QbD) principles on process parameter optimization for the development of hybrid delivery system (combination of (SLNs) and In-situ gelling system) for hydrophilic drug Moxifloxacin Hydrochloride (MOX) to achieve its controlled delivery, which otherwise may not be possible through single type of technology. Methods: Risk assessment studies were carried out to identify probable risks influencing CQAs on the product. In design of experiments (DoE), the process parameters (independent variables) i.e., chiller temperature X1, High Pressure Homogenization (HPH) pressure X2, and HPH cycles X3 were optimized using a three-factor two level face-centered central composite design to streamline the influence on three responses, namely encapsulation efficiency Y1, particle size Y2 and outlet temperature Y3. Independent and dependent variables were analyzed to establish a full-model second-order polynomial equation. F value is used to confirm the omission of insignificant parameters/interactions to derive a reduced-model polynomial equation to predict the Y1, Y2 and Y3 for optimized moxifloxacin in situ gelled nanosuspension. Results: Desirability plots showed the effects of X1, X2, and X3 on Y1, Y2 and Y3, respectively. The design space is generated to obtain optimized process parameters viz. chiller temperature (-5°C), HPH pressure 800 – 900 bar and 8 cycles that resulted in nanosuspension with ≈ 500 nm size, encapsulation efficiency >65% and final formulation temperature <23°C that were necessary to maintain the formulation in a liquid state. Conclusion: Quality by Design (QbD) approach is recently been encouraged by regulatory bodies to improve the quality of the finished product. This approach proved to be a useful tool in the development of robust nanosuspension of highly hydrophilic drugs with improved efficiency. Results indicate that such hybrid gel systems can be used to control the release of SLNs from application site and prolong their action in a sustained manner.

Crosslinked Gel Provides Long-Term Control of High-Pressure Gas Well During Coiled-Tubing Fishing: Challenges and Success Story

2006 ◽  
Author(s):  
Linus Ayajuru Nwoke ◽  
Chike Valentine Uchendu ◽  
Onyemaechi Onwubiko Ubani ◽  
John Button ◽  
James Ohioma I. Arukhe
Keyword(s):  
High Pressure ◽  
Success Story ◽  
Gas Well ◽  
Coiled Tubing

Study on the ignitability of a high-pressure direct-injected methane jet using a diesel pilot, a glow-plug, and a pre-chamber

2021 ◽  
pp. 146808742110481
Author(s):  
Walter Vera-Tudela ◽  
Bruno Schneider ◽  
Silas Wüthrich ◽  
Kai Herrmann
Keyword(s):  
High Pressure ◽  
Internal Combustion Engines ◽  
Injection System ◽  
Gas Jet ◽  
Pilot Injection ◽  
Large Engine ◽  
Promising Alternative ◽  
Ignition System ◽  
Glow Plug ◽  
Gas Jets

Natural gas is a promising alternative fuel for internal combustion engines, it allows for a reduction of engine-out emissions without impairing high engine efficiencies. Although this approach is already utilized from small to large engine classes, it is almost exclusively based on the combustion of a premixed, homogeneous charge. For ignition, small engines use standard spark-plugs or pre-chambers, while large and lean-operated engines use pre-chambers and pilot injections. Direct high-pressure gas injection is a more recent, alternative way to operate gas engines which offers benefits compared to premixed operation such as high compression ratio, high combustion pressures, lean operation, quantity regulation, among others. However, in contrast to diesel direct injection, the compression temperatures are too low for the auto-ignition of the gas jets. Therefore, an additional ignition system is required, usually a pilot injection system is used. In this study, the usability and performance of three ignition strategies for direct injected high-pressure gas jets have been investigated in an optically accessible test-rig that is able to operate at engine-like conditions. The first type of ignition system is a pilot injection with a liquid fuel, the second is a glow-plug located near the main gas jet, and the third system is a pre-chamber with a nozzle hole aimed at the main gas jet. Results show that all three strategies are feasible options under the studied conditions. Ignition by a pilot fuel injection is a safe and reliable way to ignite the main fuel. The glow-plug is less reliable and leads to high cycle-to-cycle variation. The best option in the present study is the pre-chamber, it is very reliable, delivers the highest peak cylinder pressure and exhibits the lowest cyclic variability. The good performance is attributed to the intense mixing of the main gas jet with the hot jet exiting the pre-chamber.

Impact Estimation of a Transient Temperature Field on the Service Life of the High Pressure Rotor of K-1000-60/3000 Turbine

2021 ◽  
Vol 23 ◽  
pp. 408-419
Author(s):  
Olga Chernousenko ◽  
Tetyana Nikulenkova ◽  
Anatolii Nikulenkov
Keyword(s):  
High Pressure ◽  
Service Life ◽  
Steam Turbine ◽  
Strain State ◽  
Life Assessment ◽  
Single Type ◽  
Stress Strain ◽  
Stress Strain State ◽  
Operation Modes ◽  
Numerical Examination

The one of purposes of this paper is to estimation some impact on the service life of the high-pressure cylinder rotor of a typical high-speed turbine K-1000-60/3000. The residual life assessment of power equipment would require determining viability and damage of its base metal. Typical degradation mechanisms of steam turbine equipment include long-term strength reduction and low cycle fatigue accumulation. Intensity of their impact is determined by a numerical examination of equipment thermal (TS) and stress strain states (SSS) for standard operation modes. To perform a numerical examination of the stress strain state would require solving a thermal conductivity boundary problem in quasi-stationary (for nomal operation modes) and nonstationary models (for transients). It is convenient to solve such problems of mathematical physics through discretization of the calculation object using the finite element method (Chernousenko et al. 2018). The service life of steam turbine is determined as an individual one and is assigned based on the results of individual an inspection of a separate element or the largest group of single-type equipment elements of the considered plant. The fleet service life being reached is followed by diagnostics of specific units of power installations and analysis of their operation, measurement of actual dimensions of components, examination of structure, properties and damage accumulation in the metal, non-destructive testing and estimate of stress strain state and residual service life of the component. The results of performed studies are used to determine an individual service life of each element of energy equipment (Nikulenkov et al. 2018).

Use of a Membrane Air Separation System for Nitrogen Generation on an Offshore Platform

1990 ◽  
Author(s):  
J.L. Gwin ◽  
R.T. Milne ◽  
R.H. Helm ◽  
R.J. Pogers
Keyword(s):  
Offshore Platform ◽  
Air Separation ◽  
Separation System

On-Engine Demonstration of Micro-Pilot Ignition System for a Cooper-Bessemer GMV-4TF

2003 ◽  
Author(s):  
Jacob A. Brown ◽  
John Mizia ◽  
Daniel B. Olsen ◽  
Bryan D. Wilson
Keyword(s):  
High Pressure ◽  
Rail Pressure ◽  
High Pressure Pump ◽  
Ignition System ◽  
Fuel Injectors ◽  
Natural Gas Engine ◽  
Fuel Delivery ◽  
Spark Plug ◽  
Pilot Fuel ◽  
Variable Displacement

This investigation assesses the benefits of retrofitting a diesel micro-pilot ignition system on a Cooper-Bessemer GMV-4TF two-stroke cycle natural gas engine with a 14” (36 cm) bore and a 14” (36 cm) stroke. The pilot fuel injectors are mounted through an adaptor in one of the spark plug holes in a set of dual-spark plug heads. A high pressure, common-rail, diesel fuel delivery system is employed and customizable power electronics control the current signal to the pilot injectors. Pilot fuel is supplied by a variable displacement, high-pressure pump that is driven with an electric motor. Software is developed that interfaces with the pump and controls and monitors the fuel rail pressure. Micro-pilot quantities from 11.5 to 20 mm3 (.0007 to .0012 in3) are explored at rail pressures from 200 to 1400 bar (2,900 to 20,300 psig). Three independent variables, pilot ignition timing, pilot fuel quantity, and pilot fuel rail pressure, are manipulated. An optimization sequence is performed to minimize total fuel consumption.

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