Small– Bore Piping & Vibration– Induced Fatigue

What you'll learn

Screen a plant for high-energy lines and rank them for small-bore risk
Assess an individual connection and decide between accept, monitor and modify
Separate flow-induced, acoustic-induced, pulsation and mechanical excitation sources
Design bracing that actually works, including why single-plane support is not enough
Estimate the natural frequency of a branch assembly with a valve on the end of it
Identify the full small-bore population on a unit, including the connections nobody has recorded
Recognise thermal fatigue at injection points and the design that avoids it
Judge when detailed analysis is justified and what inputs it needs
Build a small-bore management programme that closes rather than continuing indefinitely
Integrate small-bore into inspection, RBI and management of change

Requirements

No vibration or stress analysis background is required — resonance and natural frequency are built up from the start
Any engineering, technical or inspection background is enough to follow the course
Comfortable with basic algebra — the screening and frequency calculations are worked step by step
Helpful but not essential: access to a plant, an isometric set or a survey report to apply the method to
No software or purchases needed — no analysis package is required at any point

Description

This course contains the use of artificial intelligence.
▸ Half-inch connections have caused some of the largest losses of containment in the industry.
A small-bore branch is the least engineered item on a process plant. It carries no line number worth reviewing, it is often installed by fabrication rather than designed, it is rarely stressed, and there may be several thousand of them on a single unit. It is also, consistently, where loss of containment starts.
The mechanism is almost always the same. Something in the system puts energy into the pipe — a reciprocating machine, turbulent flow in a high-energy line, acoustic energy from a pressure reduction — the small-bore branch has a natural frequency close to that excitation, and a valve hanging on the end of an unsupported cantilever does the rest. The failure appears at the branch weld, usually with no prior warning and no inspection finding.
This course teaches the whole discipline: where the energy comes from, how a connection responds to it, how to screen a plant and prioritise what to look at, how to assess an individual connection, and what remediation actually works.
▸ A method you can run on a real plant
The course follows the assessment logic used in industry — screen the main lines for energy, find the connections attached to them, assess the connections for likelihood of failure, and remediate by priority. It covers the qualitative route that a survey team can run at scale and the point at which detailed analysis becomes justified, rather than treating finite element work as the default answer.
Remediation is treated seriously, because most of it is done badly. Single-plane gussets that stiffen the connection in the one direction it was not vibrating, braces welded to the main line without assessing the attachment, and clamp assemblies that loosen within a year. The course covers what works, and the option that is almost always overlooked — deleting the connection entirely.
Five focused sections, worked through in an afternoon.
▸ What you will master
• Recognise why small-bore connections dominate loss of containment statistics, and where they sit on your own plant
• Identify every small-bore population — instrument tappings, drains, vents, sample points, injection points and utility connections
• Separate the failure mechanisms — vibration-induced fatigue, thermal fatigue at injection points, dead-leg corrosion and mechanical damage
• Understand flow-induced vibration and the energy screening parameter used to rank main lines
• Understand acoustic-induced vibration, where it comes from, and why it attacks the shell wall rather than the branch
• Estimate the natural frequency of a real branch assembly, including the effect of valve mass and cantilever length
• Screen a plant systematically and build an assessment register that can actually be worked through
• Assess an individual connection and decide between accept, monitor and modify
• Design bracing that works — two-plane support, attachment detail, and the retrofit that survives
• Build a small-bore management programme that closes rather than running indefinitely
▸

Who this course is for

• Piping and mechanical engineers responsible for small-bore design and modification
• Integrity, inspection and corrosion engineers running small-bore or AVIF programmes
• Reliability engineers eliminating repeat failures on high-energy systems
• Process safety engineers assessing loss of containment risk on operating plant
• Project and construction engineers who specify and install branch connections
• Operations and turnaround engineers building survey and remediation scope
▸ Why this subject gets handed to somebody
Small-bore management arrives as an action from an incident, an audit or an insurer, and it lands on whoever is available. The engineer who understands the mechanism can turn that action into a defensible programme with a finite end. The engineer who does not ends up with a survey report nobody can close.
▸ Why learn it here
Taught by a Chartered Engineer (CEng MIMechE) with over fifteen years delivering safety-critical projects in oil, gas and energy infrastructure — from the perspective of someone who has had to walk the lines and defend the remediation list.
Very little of this subject is governed by code, and the course says so throughout. Where something is genuinely addressed by ASME B31.3, API 570 or published industry guidance it is identified as such; where it is engineering judgement, survey practice or owner procedure, that is said plainly rather than presented as a rule.
This course is independent training and is not affiliated with, endorsed by or accredited by the Energy Institute, API, ASME or any consultancy, and it does not reproduce clause text, scoring tables or figures from any published guideline.
▸ What you get
• Structured on-demand video across 20 focused lessons and five sections
• A final exam
• able presentations
• Lifetime access on mobile and TV, and a certificate of completion
▸ No vibration or stress analysis background is required — excitation, resonance and natural frquency are built up from the start, and any engineering, technical or inspection background is enough to follow the course.
Enrol now and find the connections before they find you.

Who this course is for

Piping and mechanical engineers responsible for small-bore design and modification
Integrity, inspection and corrosion engineers running small-bore or AVIF programmes
Reliability engineers eliminating repeat failures on high-energy systems
Process safety engineers assessing loss of containment risk
Project and construction engineers specifying and installing branch connections
Operations and turnaround engineers building survey and remediation scope

Homepage

https://www.udemy.com/course/small-bore-piping-vibration-induced-fatigue/

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