ACQUIP ServicesWhat Qualifies as a Machine Train?

• A Machine Train should have at least three separate machines

• The feet must be connected by at least two couplings.

Conventional Plant Machine Trains 

• Motor-Gearbox-Compressor.• Turbine HP-Turbine LP- Generator.• Engine-Gearbox-Pump.• Boiler Feed Pump-Turbine-Gearbox-Booster

Pump.

What is a Complete Machine Train Alignment?

• Recognize the Machine Train as a Whole.• Evaluate Alignment targets from the

Manufacture or calculated by measuring dynamic movement.

• Apply the fundamentals alignment principles to ensure proper shaft alignment.

• Flexible, more alternatives of components to move than a single coupling alignment.

 

Easier than a SingleCoupling Alignment

More options on whatpoints can be moved

Problems with Machine Train

Alignment

Bold BoundBase Bound

ACQUIP ServicesWalking Through the

Procedure

Safety First• Lock out/Tag

out!

ACQUIP ServicesWalking Through the

Procedure

Clean Up the Mess• Remove all dirt and

grease• Replace rusty Shims• Check for unwanted

objects

Checking List

Rough Soft Foot • Loosen all hold down

bolts• Fill any obvious gapsCommon Issues• Bolt bound• Base bound

Identify Coupling Type

• Rigid• Flexibl

e• Spacer

Readings Performance. Keep It Simple!

• Take all measurements first.

• Keep it Simple, view alignment as a whole.

 

Moves Selection

• Decide what is movable

• Fix points, not components

• Horizontal and vertical fixed points can be different

 

Dynamic Movement

• Consider Coupling Targets

• Growth at the feet• Analyze Dynamic

Movement• Compare measured

Changes 

Considering Targets

• Coupling Manufacturer

• Machine Manufacturer

• In-House Specification

Growth at the Feet

Theoretical calculation.• Material Constant• Distance between

center of shaft and machine feet• Delta Temperature

Analyze Dynamic Movement

• Across the coupling

• At the bearing bracket

Combine & Compare Alignment Information

• Misalignment readings, Coupling Targets

• Measured dynamic movement

 

Graph It Out!

ACQUIP SphereAction™ Services

Machine Train Benefits• A full profile of the machine train is entered into

the computer, so it can be looked as a whole rather than each coupling at a time.

• Best-case scenarios can be instantly tested in the computer before actually performing them and discovering you are bolt bound.

• All machine train dimensions and readings are stored in the computer, and can be recalled for further machine train alignment needs.

 

Why ACQUIP SphereAction™ is The best Choice

for your Alignment Needs?• Alignment is our Passion; we are

experts in the field.• We think outside the box, we use

existing technology resources and apply it to new and complex problems.

• We travel for your planned outages and last minute emergencies.

• We guarantee our alignment work. 

For More Information

Toll Free +1 855 ACQUIP1 Phone (305) 538 7101

info@acquip.comacquip.com

PO Box 191502 Miami Beach, FL 33119

USA – Middle East – Latin America and beyond.

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