Site Inspections

What Happens During a Metal Bellows Expansion Joint Survey?

Customer to Provide

1. Access to all expansion joints (scaffolding, work platforms, etc.).
2. Remove covers and insulation and/or lagging prior to Senior Flexonics Pathways arrival.
3. Applicable drawings for subject expansion joints to be inspected.
4. General arrangement of piping system drawings, if applicable.
5. Pre-approved camera permits, if applicable.
6. Manway accessibility, lighting and ventilation, when applicable.

Scope of Work for On-Line Site Inspections

1. Identify and tag each expansion joint per location and type of expansion joint.
2. Visually inspect each expansion joint bellows for the following: leaks, dents, convolution uniformity, discoloration, foreign materials, longitudinal and bellows attachment weld cracking.
3. Dimensionally inspect the bellows with regard to overall length, tie rod nut gaps, slotted hinge gaps (for gimbal and hinged units) and note orientation of expansion joint with regard to movements.
4. Temperature reading (whenever applicable) on various locations of the bellows and pipe wall.
5. Inspect hardware welds, where accessible.
6. Inspect for general distortion of hardware, missing hardware, etc.

Scope of Work for Off-Line Site Inspections

1. All of the above, when applicable.
2. All accessible welds to be dye penetrant tested in addition to visually inspected.
3. Sampling and analysis of any foreign material found in expansion joint.
4. Magnetic particle testing, positive material identifi cation utilizing Texas Nuclear Analyzer, ultrasonic testing and replicate testing, when applicable.
5. Visually examine all accessible wetted surfaces from inside the expansion joint.
6. Inspect liner cavity, packing, refractory and liners, when applicable.
7. Verify movements.
8. Verify design movements versus actual movements when reference is available.

For more information about Senior Flexonics Pathway’s Site Inspections, contact On Site Services.