Bearings and gears for operation in inert gases. Project DRAGON
Technical Report
·
OSTI ID:4105128
It is known that friction and wear of materials are influenced by the surrounding atmosphere. Often this atmosphere has a beneficial influence, for instance, if metal oxides of low shear strength are formed at the points of contact, leading to a reduction in coefficient of friction and wear. In the High Temperature Gas Cooled Reactor Dragon, helium of a very high purity is used as a coolant. The bearings and gears of various mechanisms such as the fuel element charge-discharge machine and the control rod drive mechanism run inside the pressure vessel. Some are exposed to high temperatures and to appreciable levels of nuclear radiation. Inert helium of high purity does not permit appreciable chemical reactions to take place on the rubbing surfaces. With certain rubbing combinations this will lead to high friction and wear. The main object of our tests was to find hearings and gears which can work satisfactorily under these conditions, rather than to do basic research. For this reason a programme was set up to cover tests on plain bearings, rolling type bearings and gears.
- Research Organization:
- Atomic Energy Establishment (AEE), Winfrith, England (United Kingdom)
- Sponsoring Organization:
- Atomic Energy Establishment (AEE)
- NSA Number:
- NSA-24-041566
- OSTI ID:
- 4105128
- Report Number(s):
- DP-Report--163; CONF-630512--1
- Country of Publication:
- United Kingdom
- Language:
- English
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Related Subjects
BEARINGS
BEARINGS/operation in Dragon Reactor helium coolant
tests on
DRAGON
GAS COOLANT
HELIUM
HIGH-TEMPERATURE GAS-COOLED REACTOR EXPERIMENT/cooling system for
testing of bearings and gears for operation in
MACHINE PARTS
MECHANICAL DRIVES/operation in Dragon Reactor helium coolant
tests on
N24200* --Engineering--Facilities & Equipment
N24500 -- Engineering--Materials Testing
N38100 --Power Reactor Development
OPERATION
REACTORS
BEARINGS/operation in Dragon Reactor helium coolant
tests on
DRAGON
GAS COOLANT
HELIUM
HIGH-TEMPERATURE GAS-COOLED REACTOR EXPERIMENT/cooling system for
testing of bearings and gears for operation in
MACHINE PARTS
MECHANICAL DRIVES/operation in Dragon Reactor helium coolant
tests on
N24200* --Engineering--Facilities & Equipment
N24500 -- Engineering--Materials Testing
N38100 --Power Reactor Development
OPERATION
REACTORS