P550c Operation Manual
7 Surveys
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Clock references
Many observations require a clock reference to locate the defect’s position on the pipe wall. For
example, you can observe a circumferential crack extending from 2 o’clock to 5 o’clock:
To help you record these defects accurately, when you type 1 to 12 in a
Clock field, a pop-up observation photo is shown with a superimposed
clock face that highlights your clock references.
Fig. 7.16: Entering a clock reference. 1 Clock face on pop-up photo illustrates the clock references.
In this example, a circumferential crack is observed from 2 o’clock to 5 o’clock.
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