PHOTO #1

Plugged tubes due to fretting cut-like defects.

PHOTO #4 NOTE Defects:

Spiral-wound gasket. As found when bundle was pulled.

PHOTO #5

Gasket extending into bundle matrix.

PHOTO #6

Removed gasket section.

PHOTO #7

In-situ defect. Note defect contour "V" corresponding with gasket surface contour.

PHOTO #8

60% depth defect. this tube is 2nd row down in bundle tube matrix.

PHOTO #9

Actual failure. Note deep defect. Gasket section was removed for photo.

PHOTO #10

INSPECTION PHOTOS

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