OAR 740-105-0110
Joint Design
(1)
Complete information recording location, type, size, and extent of all welds shall be shown on the approved welding procedures and drawings upon which the LTR repairs are based.(2)
All reach welds shall be full penetration groove welds made from one side only and completely fused to a backing strip.(3)
The effective area of the weld is the effective length multiplied by the effective throat.(4)
The effective length of the groove weld is the length throughout which the correctly proportioned weld cross section exists.(5)
The effective throat is the minimal distance from the root of the weld to its face, less any reinforcement.(6)
Intermittent groove welds are prohibited.(7)
Outside or external surface of all groove welds shall be ground flush with the reach base metal.(8)
In order to minimize stress concentration and provide more length of weld to carry the stresses, a splice angle of from 45 to 60 degrees from the centerline of the reach tube is required.
Source:
Rule 740-105-0110 — Joint Design, https://secure.sos.state.or.us/oard/view.action?ruleNumber=740-105-0110.