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Major defects in the castings may be repaired by welding with the consent of the contracting
officer. If the rings are fabricated from more than one piece, welding procedures and drawings
identifying the welds shall be submitted for approval. All welds shall be 100-percent
nondestructively inspected by radiographic, dye penetrant, or other nondestructive means. These
inspections shall be at the expense of the contractor. The qualification of welding procedures,
welders, and welding operators shall conform to section IX of the American Society of
Mechanical Engineers (ASME) Boiler and Pressure Vessel Code.
LADLE ANALYSIS AND MECHANICAL PROPERTIES
Certificates showing the results of the ladle analysis and mechanical properties tests shall be
submitted for approval. Test coupons for mechanical properties shall be worked and heat treated
in the same manner as the seal rings and shall be destructively tested to determine tensile strength,
yield strength, and Brinell hardness. Mechanical properties shall meet the specified values in the
above ASTM codes.
V. FINISH OF SEAL RINGS
The finished rings shall be free from voids, cracks, and surface defects. The finished surfaces of
the seal rings shall not exceed 125-microinches maximum surface roughness in accordance with
American National Standards Institute (ANSI) 46.1.
VI. FINAL INSPECTION
Inspection of the seal rings will be made by the contracting officer or the contracting officer's
representative at the point of manufacture prior to preparation for shipment. A manufacturer's
inspection report with final dimensions of each ring shall be submitted to the contracting officer
for approval before shipment.
The seal rings shall be sufficiently supported during shipment to assure a rigid retention of their
shape. Shipping will be the responsibility of the contractor.
This Information is Reprinted From UNITED STATES DEPARTMENT OF THE
INTERIOR BUREAU OF RECLAMATION