Compact Flanged Connections for High Temperature Applications

2002 ◽  
Author(s):  
Sjur Lassesen ◽  
Frank Woll
Keyword(s):  
Oil And Gas ◽  
High Reliability ◽  
Oil And Gas Industry ◽  
Temperature Dependent ◽  
Static Behavior ◽  
Element Analysis ◽  
Gas Industry ◽  
Start Up ◽  
Low Weight ◽  
Offshore Industry

The Steelproducts Offshore Compact Flange System (SPO CFS) has proven to be an exceptionally good flange design for the oil and gas industry with service temperatures normally ranging from −100°C to +250°C. High reliability, small size and low weight are properties the offshore industry has appreciated. The design relies on a high bolt pre-tension in order to obtain the double sealing capability and the static behavior. For limited temperatures, the high pre-tension can be applied without any risk of loosing the pre-tension when the operating temperature is reached. For high temperatures, the temperature dependent material properties in flange and bolt need to be carefully evaluated and taken into account when designing the connection. Finite element analysis simulating all relevant phases from flange make-up to process start up and shut down have been performed in order to study flange behavior such as bolt tension, flange stresses, and seal contact. Relatively simple analytical equations have been used in order to predict the flange behavior and hence been basis for choosing bolting material, prestress and flange face angle. For process industry dealing with temperatures up to 720°C, it is now possible to use compact flanges. The use of compact flanged connection will first of all increase the reliability of the flanged connection, reducing the need for maintenance.

Identifying Key Safety Culture Factors for the Offshore Industry

2021 ◽  
Author(s):  
Ning Lou ◽  
Ezra Wari ◽  
James Curry ◽  
Kevin McSweeney ◽  
Rick Curtis ◽  
...  
Keyword(s):  
Safety Culture ◽  
Oil And Gas ◽  
Oil And Gas Industry ◽  
Transportation Safety ◽  
Key Factors ◽  
Gas Industry ◽  
The Us ◽  
Offshore Industry ◽  
Offshore Oil And Gas ◽  
Offshore Oil

This research identifies key factors, or safety culture categories, that can be used to help describe the safety culture for the offshore oil and gas industry and develop a comprehensive offshore safety culture assessment toolkit for use by the US Gulf of Mexico (GoM) owners and operators. Detailed questionnaires from selected safety culture frameworks of different industries were collected and analyzed to identify important safety culture factors and key questions for assessment. Safety frameworks from different associations were investigated, including the Center for Offshore Safety (COS), Bureau of Safety and Environmental Enforcement (BSEE), and the National Transportation Safety Board (NTSB). The safety culture factors of each of these frameworks were generalized and analyzed. The frequency of the safety culture factors in each framework was analyzed to explore commonality. The literature review and analysis identified a list of common factors among safety culture frameworks.

SafeOCS Industry Safety Data Program: An Industrywide Safety Data Management Framework

2020 ◽  
Vol 72 (12) ◽  
pp. 34-37
Author(s):  
Demetra V. Collia ◽  
Roland L. Moreau
Keyword(s):  
Oil And Gas ◽  
High Reliability ◽  
Safety Data ◽  
Oil And Gas Industry ◽  
Near Miss ◽  
Outer Continental Shelf ◽  
Gas Industry ◽  
The Us ◽  
Recommended Practices ◽  
Industry Associations

Introduction In the aftermath of the Deepwater Horizon oil spill, the oil and gas industry, regulators, and other stakeholders recognized the need for increased collaboration and data sharing to augment their ability to better identify safety risks and address them before an accident occurs. The SafeOCS program is one such collaboration between industry and government. It is a voluntary confidential reporting program that collects and analyzes data to advance safety in oil and gas operations on the Outer Continental Shelf (OCS). The US Bureau of Safety and Environmental Enforcement (BSEE) established the program with input from industry and then entered into an agreement with the US Bureau of Transportation Statistics (BTS) to develop, implement, and operate the program. As a principal statistical agency, BTS has considerable data-collection-and-analysis expertise with near-miss reporting systems for other industries and the statutory authority to protect the confidentiality of the reported information and the reporter’s identify. Source data submitted to BTS are not subject to subpoena, legal discovery, or Freedom of Information Act (FOIA) requests. Solving for the Gap Across industries, companies have long realized the benefits of collecting and analyzing data around safety and environmental events to identify risks and take actions to prevent reoccurrence. These activities are aided by industry associations that collect and share event information and develop recommended practices to improve performance. In high-reliability industries such as aviation and nuclear, it is common practice to report and share events among companies and for the regulators to identify hidden trends and create or update existing recommended practices, regulations, or other controls. The challenge for the offshore oil and gas industry is that industry associations and the regulator are typically limited to collecting data on agency-reportable incidents. With this limitation, other high-learning-value events or observed conditions could go unnoticed as a trend until a major event occurs. This lack of timely data represented an opportunity for the industry and the offshore regulator (BSEE) to collaborate on a means of gathering safety-event data that would allow for analysis and identification of trends, thereby enabling appropriate interventions to prevent major incidents and foster continuous improvement. The SafeOCS Industry Safety Data (ISD) program provides an effective process for capturing these trends by looking across a wider spectrum of events, including those with no consequences.

POL and LDO for Harsh Environment Applications

2013 ◽  
Vol 2013 (HITEN) ◽  
pp. 000075-000081
Author(s):  
Ramesh Khanna ◽  
Srinivasan Venkataraman
Keyword(s):  
High Temperature ◽  
Oil And Gas ◽  
High Reliability ◽  
Oil And Gas Industry ◽  
Building Blocks ◽  
Low Noise ◽  
Harsh Environment ◽  
Buck Converters ◽  
Gas Industry ◽  
Component Selection

Harsh Environment approved components/ designs require high reliability as well as availability of power to meet their system needs. The paper will explore the various design constrains imposed on the high temperature designs. Down hole oil and gas industry requires high reliability components that can withstand high temperature. Discrete component selection, packaging and constrains imposed by various specification requirements to meet harsh environment approval are critical aspect of high-temp designs. High temperature PCB material, PCB layout techniques, trace characteristics are an important aspect of high-temperature PCB design and will be explored in the article. Buck Converters are the basic building blocks, but in order to meet system requirements to power FPGA's where low output voltage and high currents are required. Converter must be able to provide wider step down ratios with high transient response so buck converters are used. The paper with explore the various features of a buck-based POL converter design. Low noise forces the need for Low-dropout (LDO) Regulators that can operate at high Temperatures up to 210°C. This paper will address the power requirements to meet system needs.

Root Cause Analysis of 8-Inch FRP Pipeline Failure That Resulted in a Spill and Fire

2016 ◽  
Author(s):  
Frank Gareau ◽  
Alex Tatarov
Keyword(s):  
Oil And Gas ◽  
Oil And Gas Industry ◽  
Failure Rates ◽  
Material Degradation ◽  
Element Analysis ◽  
Dynamic Stresses ◽  
Gas Industry ◽  
Root Cause ◽  
Reinforced Plastic ◽  
Fire Initiation

Fibreglass reinforced plastic pipe (FRP) is the second most common type of pipe in the Canadian oil and gas industry, based on installed length. Industry methods to define risks and prevent failures are difficult because industry is still learning how these types of materials fail. Current industry failure records indicate that the failure rates for some of these materials are higher than steel failure rates. Unique details related to a specific FRP failure will be discussed in this paper. This failure occurred on an 8-inch OD FRP pipeline at the bottom of a riser. The failure resulted in a spill and a fire. The reasons for failure and fire initiation were analysed separately. The failure was a result of a combination of several types of stresses and material degradation. Both static and dynamic stresses contributed to the failure. • Ground settling resulted in high static bending stress of the last section of the pipeline connected to the riser elbow supported by the anchor. • The failure was in the last connection of the pipeline. Static tie-in stresses could have contributed to the failure. • Static stresses were evaluated using Finite Element Analysis (FEA) approach and found to be insufficient for the failure. • Dynamic stresses contributed to the failure. The failure happened soon after a power outage, when numerous wells were restarted, and several fluid surges may have occurred. • Material degradation associated with a specific orientation of glass fibres at the connection pup contributed to the failure. The failure sequence was established and different modes of fire initiation were analysed.

High-reliability extra-large motor drives for oil and gas industry

2013 ◽  
Author(s):  
T. Yoshino ◽  
H. Masuda ◽  
H. Hosoda ◽  
M. Tsukakoshi ◽  
M. A. Mostafa ◽  
...  
Keyword(s):  
Oil And Gas ◽  
High Reliability ◽  
Oil And Gas Industry ◽  
Motor Drives ◽  
Gas Industry ◽  
Large Motor

Integration between RCM and RAM: a case study

2016 ◽  
Vol 33 (6) ◽  
pp. 852-880 ◽  
Author(s):  
Ilaria De Sanctis ◽  
Claudia Paciarotti ◽  
Oreste Di Giovine
Keyword(s):  
Oil And Gas ◽  
Oil And Gas Industry ◽  
Practical Method ◽  
Environmental Safety ◽  
Gas Industry ◽  
Content Type ◽  
Availability Analysis ◽  
Plant Safety ◽  
Offshore Industry

Purpose – The purpose of this paper is to propose a practical method of performing maintenance in the offshore industry where engineers have to manage problems such as the high cost of operations, assuring an high availability of the plant, safety on board and environmental protection. Indeed an efficient maintenance method it is necessary in order to offer methods and criteria to select the rights maintenance strategies keeping in to account the environmental, safety and production constrains. Design/methodology/approach – The paper provides an overview of reliability centered maintenance (RCM) and reliability, availability, maintainability methodologies and an integration of the two methodologies in a particular case study in the oil and gas sector. Findings – This paper suggests an improvement of the well-established RCM methodology applicable to industries with high priority level. It is proposed an integration between a reliability analysis and an availability analysis and an application on the offshore oil and gas industry. Practical implications – The methodology provides an excellent tool that can be utilized in industries, where safety, regulations and the availability of the plant play a fundamental role. Originality/value – The proposed methodology provides a practical method for selecting the best maintenance strategy considering the equipment redundancy and sparing, the asset’s performance over long time scales, and the system uptime, downtime and slowdowns.

FLOATING PRODUCTION, STORAGE AND OFFLOADING FACILITIES—IMPACT OF THE NEW OIL TANKER CONSTRUCTION RULES

1994 ◽  
Vol 34 (1) ◽  
pp. 178
Author(s):  
Robin C. Gehling ◽  
Michael P. Lane ◽  
Robert M. Thornton
Keyword(s):  
Oil And Gas ◽  
Oil And Gas Industry ◽  
Cooperative Effort ◽  
Gas Industry ◽  
Safety Certification ◽  
Offshore Industry ◽  
Offshore Oil And Gas ◽  
Oil Tankers ◽  
Offshore Oil ◽  
Double Hull

FPSOs are often converted from, and carry ship safety certification as, oil tankers. The two types of ship have been reasonably compatible until passage in early 1992 of new international requirements for tankers to be constructed or converted to double hull requirements and for existing vessels to be phased out when they have been in service for 25 to 30 years. Such requirements, which have become increasingly onerous since 1973, are based on the hazards involved in navigation of oil tankers and do not reflect the risks applying to FPSO operations.In cooperation with the Australian offshore industry, AMSA made a number of submissions to the International Maritime Organisation (IMO), seeking clarification on whether FPSOs should be subjected to the rules for oil tankers. To cover the possibility that it is confirmed that FPSOs should comply with the rules, the submission proposed modifications to those rules to reflect the FPSO operating environment.The submissions resulted in IMO deciding, in March 1993, that although FPSOs would continue to be treated as oil tankers, they would not be required to comply with the double hull requirements which could have necessitated their withdrawal from service upon reaching 30 years of age.Achievement of a successful conclusion to this project has involved a cooperative effort between AMSA and the offshore oil and gas industry.

ANALYSIS OF A STRAIN GAUGE FOR THE OIL AND GAS INDUSTRY

2020 ◽  
pp. 10-15
Author(s):  
G.A. Ermolaev ◽  
N.V. Gorbunov
Keyword(s):  
Oil And Gas ◽  
New Technologies ◽  
Raw Materials ◽  
Oil And Gas Industry ◽  
Element Analysis ◽  
Gas Industry ◽  
Analysis And Design ◽  
Sensor Model ◽  
Specialized Equipment ◽  
Tension Sensor

Hydrocarbon raw materials are the cornerstone of modern civilization. Evaluating the resources of existing fields is the most important condition for making a decision on the feasibility of production using new technologies. We discuss the results of analysis and design of a rope tension sensor model for delivering specialized equipment to wells to determine the prospects of a well. The calculations were performed using the universal finite element analysis software package ANSYS.

Qualification of AM-Parts for The Offshore Industry

2021 ◽  
Author(s):  
Ole-Bjørn Ellingsen Moe ◽  
Bertrand Henri Benoit Maillon
Keyword(s):  
Additive Manufacturing ◽  
Oil And Gas ◽  
Oil And Gas Industry ◽  
Gas Industry ◽  
Industry Standards ◽  
Expert Advisory ◽  
Independent Expert ◽  
Recommended Practices ◽  
Offshore Industry ◽  
Wire Arc Additive Manufacturing

Abstract Use of additive manufacturing (AM) technology is quite mature in medicine and aerospace industries but adoption of the technology has been limited in the oil and gas industry. One of the reasons behind the slow adoption is the non-availability of industry standards and recommended practices. DNV aims to help the adoption of AM in the oil and gas industry by providing the needed industry standards and recommended practices. DNV is one of the largest classification societies in the world and provides classification, technical assurance, software and independent expert advisory services to the maritime, oil & gas and energy industries. DNV has been running several projects globally to help the industry qualify materials and products produced by additive manufacturing. DNV has been working since January 2018 together with main stakeholders in a joint Industry Project (JIP) to develop requirements necessary to introduce components made by AM for oil and gas and related applications. The outcome of the JIP was released to the industry in 2020; a standard that describes the qualification and quality assurance of AM parts. The AM technologies addressed in the standard are laser based powder bed fusion (PBF-LB) and wire arc additive manufacturing (WAAM). In this paper, the standard is presented, and a systematic way to qualify parts made by PBF-LB and WAAM technologies described. A case study, leading to a qualified part according to the standard will be presented. It has been led by Vallourec, a world leader in tubular solutions for the energy sectors. Vallourec embraced additive manufacturing a few years ago and is currently developing and offering WAAM components for various industries.

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