| Question |
Answer |
| Concrete ISFSI Pad |
|
| Please give a general description of the
ISFSI pad design. |
The pad will be approximately 3 feet thick and 100
feet by 200 feet with a crushed rock apron. Pad design
and construction take into consideration the issues
of earthquakes, access roads, drainage, instrumentation,
cask transport equipment, security systems and lighting. |
| How much concrete is required to build the
ISFSI? |
About 2000 cubic yards of concrete is needed. The concrete
will be mixed on site to minimize truck traffic through
the surrounding community. During the construction of
the pad and prior to loading of casks, the NRC will be
present on site to verify Entergy has met all applicable
requirements. |
| What are the design and construction specifications
for the ISFSI pad? |
The design and construction specifications for the
ISFSI pad are found in NRC regulations and industry
standards. They include:
- The Standard Review Plan for Dry Cask Storage Systems,
NUREG-1536
- The Certificate of Compliance COC, a 318 page document
issued by the U.S. Nuclear Regulatory Commission,
pursuant to 10 CFR 72, "Licensing Requirements
for Independent Storage of Spent Nuclear Fuel and
High-Level Radioactive Waste", including, Subpart
G-Quality Assurance
- American Concrete Institute-349-85 and 91, Code
Requirements for Nuclear Safety Related Concrete Structures
- HOLTEC Hi Storm Technical Specifications and Final
Safety Analysis Report (a 2651 page analytical document)
|
| Is the ISFSI pad designed for dynamic loads? |
Yes. Dynamic Load Factor Equations have been calculated
and are included in the Hi-Strom FSAR. All static stress
calculations use these dynamic load amplifiers to evaluate
the adequacy of final safety factors. |
| Has ISFSI pad construction begun yet? |
Yes. Excavation for the pad began in late 2004 and is now complete. A six-foot thick layer of engineered fill has been placed in the excavated site, providing a foundation for about 21 miles of rebar used for strength and reinforcement. In mid-May approximately 480 truckloads of concrete will be poured to complete the ISFSI. Nuclear Regulatory Commission specialists from the Spent Fuel Projects Office along with IPEC resident NRC inspectors will be present during the pour to ensure strict adherence to applicable procedures. |
