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HWCTR CONTROL ROD AND SAFETY ROD DRIVE SYSTEMS

Technical Report ·
OSTI ID:4701097
The Heavy Water Components Test Reactor (HWCTR) is a pressurized, D/sub 2/O reactor designed for operation up to 70 Mw at 1500 psig and 3l5 deg C. It has 18 control rods and six safety rods, each driven by an electric motor through a rack and pinion gear train. Racks, pinions, and bearings are located inside individual pressure housings that are penetrated by means of floating ring labyrinth seals. The drives are mounted on the reactor vessel top head. Safety rods have electromagnetic clutches and fall into the reactor when scrammed. The reliability and performance of the rod drives are very good. Seal leakage is well within design limits. Recent inspections of seals and control rod plants showed no evidence of crud buildup or stress corrosion cracking of type 17- 4PH'' stainless steel components. (auth)
Research Organization:
Du Pont de Nemours (E.I.) & Co. Savannah River Lab.
NSA Number:
NSA-17-029841
OSTI ID:
4701097
Report Number(s):
TID-19001
Country of Publication:
United States
Language:
English

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