- (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.
Statutory/Other Authority
ORS 183.335, 823.011, 825.210 & 825.252
Statutes/Other Implemented
ORS 825.210 & 825.252
History
MCT 3-1996, f. & cert. ef. 3-14-96, Renumbered from 860-066-0101
PUC 16-1993, f. & cert. ef. 8-19-93 (Order No. 93-1157)