Quarterly report on the Strontium Heat Source Development Program, Advanced Systems and Materials Production Division for January--March 1978. [WESF /sup 90/SrF/sub 2/ capsules]
Work has started on a theoretical analysis of the possible consequences of a WESF /sup 90/SrF/sub 2/ capsule rupture in an ocean environment. ORNL has begun work on sectioning the capsules from the 12,000 hr compatibility tests with WESF /sup 90/SrF/sub 2/. Examination of the Haynes Alloy 25 specimens which were exposed to WESF /sup 90/SrF/sub 2/ for 6000 hr has been completed. The 6000-hr specimens suffered much greater attack than the equivalent 1000-hr specimens. The chemical attack mechanisms appeared to vary depending on the exposure temperature, while the addition of Zr + ZrF/sub 4/ to the /sup 90/SrF/sub 2/ to simulate decay product buildup, produced a marked decrease in metal attack. The preliminary design of the outer capsule for the /sup 90/SrF/sub 2/ heat source has been completed. Fabrication of prototype test capsules from AISI 1018 low carbon steel, as a stand-in for thermally aged Hastelloy S, is now underway. The prototype capsules will be subjected to the major /sup 90/SrF/sub 2/ heat source qualification test requirements (1000-bar hydrostatic pressure test, impact test, and puncture test) to determine the adequacy of the outer capsule design.
- Research Organization:
- Battelle Pacific Northwest Labs., Richland, WA (USA)
- DOE Contract Number:
- EY-76-C-06-1830
- OSTI ID:
- 6702048
- Report Number(s):
- BNWL-1845-38
- Country of Publication:
- United States
- Language:
- English
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