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Overview of Bolts
A Bolt is a threaded fastener that has an external male thread used in conjunction with nuts to attach separate pieces of equipment together. Bolts are often used to hold together sections of pipelines, piping, boilers or other equipment. In industrial applications it is extremely important for bolts to be tightened properly and inspected regularly. Because bolt failure can lead to significant process safety incidents, operators should take measures to ensure they have implemented an effective joint integrity management program.
ASME PPC-1 provides guidelines for pressure boundary bolted flange joint assemblies and can be used to develop joint assembly procedures for a broad range of services.
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Articles about Bolts
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July/August 2015 Inspectioneering JournalBy Neil Ferguson at Hydratight
With the increasing demand for oil, gas, and petrochemical products in a highly competitive market, products and services irrespective of their origin must satisfy customer quality requirements. Additionally, the needs to ensure quality control and regulatory compliance are now more scrutinized and critical than ever.
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BlogApril 27, 2015
One problem that nearly everyone in the industry has experienced is where, in certain situaions, a tight bolt will perform correctly while a loose bolt will fail. This happens because of two fundamental types of loading that a bolt may encounter: “static” or steady state loading, and “cyclic” or continuously changing loading.
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May/June 2014 Inspectioneering JournalBy Neil Ferguson at Hydratight
In November 2013, ASME released its updated PCC-1 guidelines for pressure boundary bolted flange joint assemblies. Contained within the document is Appendix A, which represents a major change from the previous 2010 release and is considered to be one of the most critically important changes for BFJA technicians, operators, and other industry professionals.
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March/April 2014 Inspectioneering JournalBy Neil Ferguson at Hydratight
Joint integrity programs (JIP) should be an integral part of every refinery, petrochemical, production, or other industrial-complex facility operations.
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January/February 2014 Inspectioneering JournalBy Neil Ferguson at Hydratight
If necessity is the mother of invention, then the American Society of Mechanical Engineers (ASME), the Occupational Safety and Health Administration (OSHA), and the Environmental Protection Agency (EPA) are the parents of guidelines, standards, and regulations that help keep industrial operations safe for humans and the environment.
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May/June 2011 Inspectioneering JournalBy Del Underwood at Det Norske Veritas
In two previous issues we discussed the important difference between steady and cyclic loading, and why loose bolts fail while tight ones do not. This issue will offer two suggestions for reducing the tendency for bolts to become loose.
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March/April 2011 Inspectioneering JournalBy Del Underwood at Det Norske Veritas
In the previous issue we dealt with the fact that bolts can withstand significantly less cyclic loading than steady loading. We are now looking at the mechanics of why bolts fail if flanges are allowed to separate during operation.
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January/February 2011 Inspectioneering JournalBy Del Underwood at Det Norske Veritas
A continually frustrating phenomenon to many of us is the situation where a tight bolt will function satisfactorily, but in the same situation, a loose bolt will fail...
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September/October 2009 Inspectioneering JournalBy Warren Brown at The Equity Engineering Group, Inc., Wayne McKenzie at Syncrude Canada, and Shane Ryan at Syncrude Canada
Leakage of pressure vessel and piping bolted joints in refineries is an unnecessary hazard, with high associated cost, that can be easily rectified using currently available technology. There have been advances in gasket testing technology in recent years that have allowed great improvements to be made in the specification of gaskets for refinery applications. This minimizes the likelihood of joint leakage and results in reduce operating cost. In addition, there have also been advances in joint assembly procedures that have enabled significant reduction in joint assembly times, while resulting in a better final gasket stress distribution and therefore lower likelihood of leakage.
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May/June 1999 Inspectioneering JournalBy Del Underwood at Det Norske Veritas
In two previous issues we discussed the important difference between steady and cyclic loading, and why loose bolts fail while tight ones do not. This issue will offer two suggestions for reducing the tendency for bolts to become loose.
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January/February 1999 Inspectioneering JournalBy Del Underwood at Det Norske Veritas
In the previous issue, we dealt with the fact that bolts can withstand significantly less cyclic loading then steady loading. We are now looking at the mechanics of why bolts fail if flanges are allowed to separate during operation.
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August 13 - 14 2019Location: Houston, Texas, United States
Hosted By: Asset Optimization Consultants
Dates: August 13, 2019 - August 14, 2019
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June 25 - 27 2019Location: Houston, Texas, United States
Hosted By: Stress Engineering Services
Dates: June 25, 2019 - June 27, 2019
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November 18 - 21 2019Location: Atlanta, Georgia, United States
Hosted By: American Petroleum Institute
Dates: November 18, 2019 - November 21, 2019
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