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MX camera using Motion Amplification Software to detect coupling wear and bolt looseness.

2. MX camera using Motion Amplification Software to detect coupling wear and bolt looseness.

PROBLEM OVERVIEW

PROBLEM

There are two (duty and standby) Stator Coolant Pumps (SCP) critical to the operation of each 500+ megawatt turbo generator at the Loy Yang Power Station. One of the two SCP’s for Unit 1 turbo generator has had a long history, more than 10 years, of high lateral vibration, sometimes reaching 20 mm/sec RMS. There have been many attempts to remedy the problem at an estimated material cost of AU$160k.

TESTING

There are two (duty and standby) Stator Coolant Pumps (SCP) critical to the operation of each 500+ megawatt turbo generator at the Loy Yang Power Station. One of the two SCP’s for Unit 1 turbo generator has had a long history, more than 10 years, of high lateral vibration, sometimes reaching 20 mm/sec RMS. There have been many attempts to remedy the problem at an estimated material cost of AU$160k.

RDI TECHNOLOGIES SOLUTIONS

SOLUTION

Optical Motion Technologies (OMT) were contracted to apply RDI’s Motion Amplification™ software to solve the long-running problem on 1-SCP-2. From arriving at the location of the SCPs in the power station, setting up the video camera acquisition system and then collecting nine Motion Amplification™ videos took less than one hour. The process involved taking wide angle ‘whole of machine’ videos, analyzing them in the field and then honing in with zoomed videos on the root cause of the problem. It was clear from the videos that the problem was a soft foot condition between the pump base frame and skid base plate. In fact, there was a twisting operational deflection shape of the pump base frame.

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