shell boiler

Not all shell boilers raise steam; some are designed specifically for heating pressurised water.

In homage to the Lancashire design, modern shell boilers can come with a twin furnace design.

It describes those procedures considered to be good practice, and incorporates advice in assessing defects in shell-to-endplate welds and furnace-to-endplate welds in shell boilers.

Require classification surveyors and ship owners to report: cases where shell boiler or economiser repairs are necessary because of cracking; cases where boiler or economiser safety valves are found to have seized.

Various study groups of the CEN TC 269 are working out the details for EN standards concerning shell boiler and water-tube boiler applications as well as steam boiler equipment and boiler operating modes (WG 3).

However, ferritic stainless steel is often used in superheater sections that will not be exposed to boiling water, and electrically-heated stainless steel shell boilers are allowed under the European "Pressure Equipment Directive" for production of steam for sterilizers and disinfectors.