Interpretation Response #PI-78-005 ([The Standard Oil Company] [Mr. Robert R. Young])
Below is the interpretation response detail and a list of regulations sections applicable to this response.
Interpretation Response Details
Response Publish Date:
Company Name: The Standard Oil Company
Individual Name: Mr. Robert R. Young
Location State: OH Country: US
View the Interpretation Document
Response text:
Mr. Robert R. Young
The Standard Oil Company
Midland Building
Cleveland, Ohio 44115
Dear Mr. Young:
This responds to your letter dated November 18, 1977, in which you ask, "does the term 'cracks' as stated in DOT Section 195.230 and Section 195.232 exclude 'shallow crater cracks or star cracks' which are of acceptable dimensions and 'not considered injurious defects' according to Section [sic] 6.7 of API 1104 and DOT Section 195.228?" The answer is Yes, because the acceptability of a weld is determined according to the standards in Section 6 of the 1973 edition of API Standard 1104.
Section 6.7 of API 1104 states: "Shallow crater cracks or star cracks which are located at the stopping point of weld beads and which are the result of weld metal contraction during solidification are not considered injurious defects unless their length exceeds 5/32 inch. With exception of these shallow crater cracks, no weld containing cracks, regardless of size or location, shall be acceptable." The Office of Pipeline Safety Operations interpreted the requirement to mean that shallow crater cracks or star cracks 5/32 inch or less are not significant in the assessment of a weld. We believe that it would be incorrect to conclude that these specific cracks are identified in Section 195.230(a)(1) and Section 195.232(a), since they are not considered injurious defects.
We trust that we have satisfactorily responded to your inquiry.
Sincerely,
Cesar DeLeon
Acting Director
Office of Pipeline
Safety Operations
Regulation Sections
| Section | Subject |
|---|---|
| 195.228 | Welds and welding inspection: Standards of acceptability |