Using Software Options
Part # 910-250C
149
Figure 101 Displaying the D Value
Pressing the [SAVE WAVE] key saves the data for this discontinuity in the EPOCH
4PLUS datalogger. In instruments with operating software versions 1.09 and higher, this
information is available for review in the instrument datalogger. For instruments with
operating software version 1.08, the AWS data must be reviewed in the GageView PRO
Interface Program version 3.0 or higher.
Note: While using the EPOCH 4PLUS and the AWS D1.1 software option, you
must be aware of any inspection conditions that may cause variations in the
displayed Indication Rating (D) value. You must also be able to interpret the
meaning of echo indications and reported D values corresponding to these
indications.
9.17 API 5UE
9.17.1 Description
The API 5UE software option for the EPOCH 4PLUS assists with performing inspections
in accordance with the American Petroleum Institute’s Recommended Practice 5UE. This
practice was developed specifically for Oil Country Tubular Goods (OCTG)
manufacturers to inspect and characterize inner-diameter (ID) cracking in newly
fabricated pipe. The API 5UE code uses two crack sizing methods to characterize ID
cracking: the Amplitude Comparison Technique (ACT) and the Amplitude-Distance
Differential Technique (ADDT). The software developed for the EPOCH 4PLUS aids in
performing the ADDT method, which uses the following formula to determine ID crack
size:
d
i
= A
max
(T
2
-T
1
)k, where:
d
i
= Imperfection size
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