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FIFTH CANADIAN CONFERENCE ON NONDESTRUCTIVE ... - IAEA

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Step 1<br />

Step<br />

2<br />

Step 3<br />

Step 4<br />

No<br />

- 187 -<br />

TABLE 5<br />

Sequence for CIGARette Inspection<br />

Action Objective<br />

Axial Scan Using Eddy<br />

Current Garter Spring<br />

Probe<br />

Garter Springs Located?<br />

\ f Yes<br />

Garter Springs in design location?<br />

No<br />

Ultrasonic Inspection<br />

of longest span<br />

Record any indications<br />

Yes<br />

Ultrasonic Inspection<br />

of span between outlet<br />

rolled joint& nearest<br />

garter springs<br />

Axial/rotational scans to measure<br />

PT/CT gap using eddy current<br />

Ultrasonic Gauging of pressure<br />

tube wall thickness<br />

Report Results<br />

Locate Garter<br />

Springs<br />

Detect<br />

Hydride<br />

Blisters,<br />

if present<br />

Eddy Current<br />

and ultrasonics<br />

to measure PT/<br />

CT gap

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