Search results
1 – 10 of over 5000B.B.V.L. Deepak, M.V.A. Raju Bahubalendruni and B.B. Biswal
The purpose of this paper is to describe the reviews of past research work on various in-pipe robotic systems and their operations. This investigation has been focussed on the…
Abstract
Purpose
The purpose of this paper is to describe the reviews of past research work on various in-pipe robotic systems and their operations. This investigation has been focussed on the implemented methodologies for performing in-pipe cleaning and inspection tasks.
Design/methodology/approach
This work has been concentrated on review of various sensors used in robots to perform in-pipes inspection operation for determining flaws/cracks, corrosion-affected areas, blocks and coated paint thickness. Various actuators like DC motors, servo motors, pneumatic operated and hydraulic operated are discussed in this review analysis to control the motion of various mechanical components of the robot.
Findings
In the current analysis, categorisation of various pipe cleaning robots according to their mechanical structure has been addressed. A lot of information has been gathered regarding the control of in-pipe robots for performing inspection and cleaning tasks.
Originality/value
In this paper, various in-pipe cleaning and inspection techniques have been studied. Necessary information provided regarding different types of in-pipe robots like PIG, wall-pressed, walking, wheel and inchworm. This investigation provides a through literature on various types of sensors like ultrasonic, magnetic, touch, light amplification by stimulated emission of radiation, X-ray, etc., that have been used for inspection and detection of flaws in the pipe.
Details
Keywords
Jinchang Fan, Canjun Yang, Yanhu Chen, Hansong Wang, Zhengming Huang, Zhicheng Shou, Ping Jiang and Qianxiao Wei
This paper aims to present an underwater climbing robot for wiping off marine life from steel pipes (e.g. jackets of oil platforms). The self-adaption mechanism that consists of a…
Abstract
Purpose
This paper aims to present an underwater climbing robot for wiping off marine life from steel pipes (e.g. jackets of oil platforms). The self-adaption mechanism that consists of a passive roll joint and combined magnet adhesion units provides the robot with better mobility and stability.
Design/methodology/approach
Adhesion requirements are achieved by analyses of falling and slipping. The movement status on pipes is analyzed to design the passive roll joint. The optimized structure parameters of the combined magnet adhesion unit are achieved by simulations. An approximation method is established to simplify the simulations conditions, and the simulations are conducted in two steps to save time effectively.
Findings
The self-adaption mechanism has expected performance that the robot can travel on pipes in different directions with high mobility. Meanwhile, the robot can clean continuous region of underwater pipes’ surface of offshore platforms.
Practical implications
The proposed underwater robot is needed by offshore oil platforms as their jackets require to be cleaned periodically. Compared with traditional maintenance by divers, it is more efficient, economic and safety.
Originality/value
Due to the specific self-adaption mechanism, the robot has good mobility and stability in any directions on pipes with different diameters. The good performance of striping attachments from pipes makes the underwater robot be a novel solution to clean steel pipes.
Details
Keywords
Although constant research is being carried out for improvements in the manner of new techniques, materials and every sphere possible to afford the best protection that can be…
Abstract
Although constant research is being carried out for improvements in the manner of new techniques, materials and every sphere possible to afford the best protection that can be provided for every type and size of pipe against the problem of corrosion, whether such corrosion exists or forms internally or externally, or whether it takes the form of erosion of the pipe or as a build‐up of internal encrustation, it may be worth briefly summarising the details of at least one process of internal protection which has stood the test of time in a very definitive manner.
In the period before Britain entered the European Community and again at the Labour Government's referendum, one factor which caused most concern in both those in favour and those…
Abstract
In the period before Britain entered the European Community and again at the Labour Government's referendum, one factor which caused most concern in both those in favour and those against entry, was the possible loss of sovereignty by the Houses of Parliament to a supra‐national body. That there would be some loss was accepted but fears that it would be anything more than minimal were discounted, and not enough to affect the lives of ordinary people. Far‐reaching changes required by some of the EEC food directives and regulations, which even if held in abeyance for the usual transitional period will have to be implemented eventually, must be causing many to have second thoughts on this. If more were needed, the embarassing situation at the recent energy conference, at which Britain, as a major oil producer, demanded a separate seat, but had to submit to the overall authority of the Community, the other members of which, figuratively, do not produce a gallon of oil between them. A shift of power from Whitehall to Brussels may not be so evident at higher levels of government, however, as in secondary legislation; the language of the departments of government.
Traditionally carbon steel has been used for both offshore and onshore pipelines and these have been coated with a variety of anticorrosion coatings including bituminous coatings…
Abstract
Traditionally carbon steel has been used for both offshore and onshore pipelines and these have been coated with a variety of anticorrosion coatings including bituminous coatings such as reinforced coal tar enamel, asphalt enamel; fusion bonded epoxy powder and polyethylene. The use of more exotic alloys (e.g. Duplex stainless steel) had previously been limited to risers.
Historically, man's efforts to resist the effects of corrosion can be traced back several hundred years. Sir Hugh Platt (1552–1611) noted that an ‘oily substance’ prevented iron…
Abstract
Historically, man's efforts to resist the effects of corrosion can be traced back several hundred years. Sir Hugh Platt (1552–1611) noted that an ‘oily substance’ prevented iron work rusting. The famous Dr. Angus Smith (1817–1884) patented a technique for coating heated metal pipes with ‘coal oil’ to resist corrosion. We have in the above some of the fundamental requirements of a coating, namely: 1. Surface preparation, aiming to clean the pipe surfaces of corrosion products, moisture and foreign matter. 2. Material having a water‐resistant quality.
Underground cast iron and steel pipelines are used for the conveyance of potable water for domestic supply and steel pipelines are used to transport fresh water in fire water…
Abstract
Underground cast iron and steel pipelines are used for the conveyance of potable water for domestic supply and steel pipelines are used to transport fresh water in fire water mains in both installations onshore and on offshore oil and gas platforms. Seawater is conveyed by pipeline for industrial cooling applications.
About fourteen years ago a unique pipe coater was built in Alabama to apply fusion coating to large diameter pipe—24 in. and larger. This was after about 10 years' experience in…
Abstract
About fourteen years ago a unique pipe coater was built in Alabama to apply fusion coating to large diameter pipe—24 in. and larger. This was after about 10 years' experience in coating small diameter pipe mainly in gas distribution systems.
J.G. Parry and J.R. James
In the early days of pipe protection, it was thought that any coating reinforced with any type of wrapping could not fail to extend the life of a buried pipeline system. Today, as…
Abstract
In the early days of pipe protection, it was thought that any coating reinforced with any type of wrapping could not fail to extend the life of a buried pipeline system. Today, as a result of experience accumulated by many users in different parts of the world, we know that only the careful selection of both pipe coatings and reinforcing inner and outer wraps can be relied on to protect a buried pipeline system effectively. This article considers the functions of a pipeline coating, and the materials and coating systems which best carry out these functions.
In the manufacture of the Jaguar aircraft at Toulouse Breguet were confronted with certain cleaning problems involving hydraulic circuits. The problems stemmed principally from…
Abstract
In the manufacture of the Jaguar aircraft at Toulouse Breguet were confronted with certain cleaning problems involving hydraulic circuits. The problems stemmed principally from the demand for extremely high cleanliness requirements in such circuits to assure viability, eliminate deterioration risks in expensive equipment and reduce serious hold‐ups at the final assembly stage caused by defective or sub‐standard components thereby affecting price and delivery dates.