Nuclear LP turbine design and operating experience

Conference · Mon Mar 31 23:00:00 EST 1986 · Proc. Am. Power Conf.; (United States)

OSTI ID:6982698

Aubry, P; Bayard, S; Anis, A

Alsthom is the only company in the world which has extensive operating experience with large nuclear LP rotors of two radically different designs. The first one, using shrunk-on disks, was developed with emphasis on keeping stresses low. No disk cracking has been encountered in 28 units having logged up to 55,000 operating hours. 15 turbines of the second type featuring welded shafts have been operating for up to 23,000 hours. No cracking problems have been encountered. Compared to built-up rotors, the welded LP shaft offers a larger safety margin against failure, due to its intrinsically lower stress level. For this reason, Alsthom is exclusively using welded shafts for all its second-generation nuclear units rated up to 1500 MW.

• Research Organization: Alsthom, Le Bourget
• OSTI ID: 6982698
• Report Number(s): CONF-860422-
• Journal Information: Proc. Am. Power Conf.; (United States), Journal Name: Proc. Am. Power Conf.; (United States) Vol. 48; ISSN PAPWA
• Country of Publication: United States
• Language: English

Related Subjects

22 GENERAL STUDIES OF NUCLEAR REACTORS
220200* -- Nuclear Reactor Technology-- Components & Accessories
DESIGN
FABRICATION
FRACTURE MECHANICS
JOINING
MACHINE PARTS
MACHINERY
MECHANICS
NUCLEAR FACILITIES
NUCLEAR POWER PLANTS
OCCUPATIONAL SAFETY
OPERATION
PERFORMANCE
PLATES
POWER PLANTS
POWER RANGE 1-10 GW
POWER REACTORS
REACTORS
ROTORS
SAFETY
SHAFTS
STRESSES
THERMAL POWER PLANTS
TURBINE BLADES
TURBINES
TURBOMACHINERY
WELDING