Spherical pressure vessels are extremely hard to make ... while a lack of abrupt edges guarantees strain is distributed well. Although hemispherical heads offer better strain distribution, shallower ...

Feb. 25, 2004 — The Nuclear Regulatory Commission is revising the Order for inspection requirements for reactor pressure vessel heads at pressurized water reactors. The change is part of the ...

The challenge came from a valued customer: Build a 1,500-gallon production vessel with rigorous ... in various jacket styles and pressure ranges, Lee Industries hemispherical kettles are available ...