Full Description

1.1 These reference radiographs for heavy-walled steel castings are applicable to nominal section thicknessesof 4 1/2 to 12 in. [114 to 305 mm] and consists of two sets as follows:

1.1.1 2-MV X rays and Cobalt-60Thisincludes cobalt-60 or equivalent isotope radiation and from 2 MV up to 4 MV X rays. Set of 28 plates in 81/2 by11 in. [216 by 279 mm] ring binders.

1.1.2 4-MV to 30-MV X rays.

1.1.3 Each set consists of threecategories of graded discontinuities in increasing severity levels, and three categories of ungradeddiscontinuities furnished as examples only, as follows:

1.1.3.1 Category A-Gas porosity; severity levels 1through 5.

1.1.3.2 Category B-Sand and slag inclusions; severity levels 1 through 5.

1.1.3.3. CategoryC-Shrinkage; 3 types:

Type 1 - Severity levels 1 through 5.
Type 2 - Severity levels 1 through 5.

Type 3 - Severity levels 1 through 5.

1.1.3.4 Category D-Crack; one illustration D5 in pre-1972 documents.

1.1.3.5 Category E-Hot tear; one illustration D3 inpre-1972 documents.

1.1.3.6 Category F-Insert; one illustration EB2 in pre-1972 documents.

1.2 Thisstandard does not purport to address all of the safety concerns, if any, associated with its use. It is theresponsibility of the user of this standard to establish appropriate safety and health practices and determine theapplicability of regulatory limitations prior to use.

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Published: 01/01/2004 Number of Pages: 3 File Size: 1 file , 35 KB