Name:
ASTM C992-11 PDF
Published Date:
02/01/2011
Status:
Active
Publisher:
ASTM International
1.1 This specification defines criteria for boron-based neutron absorbing material systems used in racks in a pool environment for storage of nuclear light water reactor (LWR) spent-fuel assemblies or disassembled components to maintain sub-criticality in the storage rack system.
1.2 Boron-based neutron absorbing material systems normally consist of metallic boron or a chemical compound containing boron (for example, boron carbide, B4C) supported by a matrix of aluminum, steel, or other materials.
1.3 In a boron-based absorber, neutron absorption occurs primarily by the boron-10 isotope that is present in natural boron to the extent of 18.3 ± 0.2 % by weight (depending upon the geological origin of the boron). Boron, enriched in boron-10 could also be used.
1.4 The materials systems described herein shall be functional - that is always be capable to maintain a B10 areal density such that subcriticality Keff
| File Size : | 1 file , 73 KB |
| Note : | This product is unavailable in Russia, Ukraine, Belarus |
| Number of Pages : | 4 |
| Published : | 02/01/2011 |
| Redline File Size : | 2 files , 130 KB |
