910-269-EN, Rev. B, June 2011
Software Features and Options (Conventional UT Mode) 229
11.4 AWS D1.1/D1.5 Weld Rating Software
The AWS D1.1 software option for the EPOCH 1000 Series has been created to assist
you in performing inspections covered under the American Welding Society D1.1 (or
D1.5) Structural Welding code for steel. This code provides inspectors with a method
to classify discontinuities found in welds using ultrasonic inspection. This code uses
the following formula to develop an indication rating for a reflector found during an
inspection:
A - B - C = D
where:
A = Discontinuity indication level (dB)
B = Reference indication level (dB)
C = Attenuation factor: 2 * (sound path in inches – 1 in.) (dB)
D = Indication rating (dB)
The AWS D1.1 inspector must take the Indication Rating (D) that is calculated based
on A, B, and C to an “Ultrasonic Acceptance – Rejection Criteria” table produced by
the AWS in order to classify the severity of the discontinuity that has been located. As
an inspection is performed, you are required to develop an AWS report that lists the
values for all variables listed above as well as transducer information, discontinuity
length and location, and the your overall evaluation of the discontinuity.
For further details regarding the test equipment, methods, interpretation, and
classification requirements for these inspections, please refer to the AWS D1.1 Code
Book.
11.4.1 Description
Olympus has developed the AWS D1.1 software option for the EPOCH 1000 Series
with the goal of simplifying inspector tasks and lowering the overall inspection time.
This is accomplished by having the EPOCH
1000 Series perform some required
calculations automatically and also by permitting the inspector to document
discontinuities in the EPOCH
1000 Series’ data logger for reporting purposes.
Downloaded from ManualsNet.com search engine
To Next Page
Loading...
