VALVE STEM FREEZE SEAL FOR HIGH-TEMPERATURE SODIUM
Valve stem freeze seals for high-temperature service in advanced sodium- cooled reactor systems were studied. An experimental model, suitable for use with a 6-in. size valve, operated satisfactorily under a variety of conditions. The freeze seal region was cooled by natural convection to ambient atmosphere; cooling by both circumferential and longitudinal finned sections was experimentally studied. The operating conditions included sodium bulk temperatures up to 1300 tained F, sodium pressures up to 75 psig, and ambient temperatures as high as 150 tained F. Anticonvection rings were pcsitioned in the sodium-filled annulus between stem and stemguide, and the effects of their presence was studied. Predictions of temperature profiles along the stem, using several different analytical methods, were compared with experimental results. (auth)
- Research Organization:
- Atomic International. Div. of North American Aviation, Inc., Canoga Park, Calif.
- Sponsoring Organization:
- USDOE
- DOE Contract Number:
- AT(11-1)-GEN-8
- NSA Number:
- NSA-14-021079
- OSTI ID:
- 4181737
- Report Number(s):
- NAA-SR-4869
- Country of Publication:
- United States
- Language:
- English
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