High temperature pressure vessel inspection procedure

Details High temperature pressure vessel inspection procedure High temperature pressure vessel inspection procedure

1986-02-28

1987-07-28

Goldberg, Howard N.

Metal working

Method of mechanical manufacture

With testing or indicating

29 81J, 29 81F, 29 81G, B23Q 1700, B21C 4300

Patent

active

046823972

ABSTRACT:
A method of inspecting a tube header bore comprises scoring an oxide scale layer within the bore using a hard scribing tool. The bore is then cleaned using one or more honing brushes having flexible bristles with carbide tips. After sufficiently cleaning the inner surface of the bore a florescent dye is applied to the surface for highlighting surface defects and a visual inspection is made. For easy access to the interior of the bore, the tube is cut at a point spaced from the bore. After the inspection is complete a new length of tube is connected such as by welding.

REFERENCES:
patent: 1122731 (1914-12-01), Gilman et al.
patent: 2058229 (1936-10-01), Hogkins
patent: 3331114 (1967-07-01), Neufelder
patent: 4200947 (1980-05-01), Ali
patent: 4445248 (1984-05-01), Hait

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