ML090540553
| ML090540553 | |
| Person / Time | |
|---|---|
| Site: | Indian Point  |
| Issue date: | 11/22/2005 |
| From: | - No Known Affiliation |
| To: | NRC Region 1 |
| References | |
| Download: ML090540553 (3) | |
Text
General Information, Terminology:
Holtec Containers:
HI-TRAC (Holtec International Transfer Cask)
HI-STORM (Holtec International Storage and Transfer Operation Reinforced Module)
HI-TRAC(Short) (specially modified for U1, i.e., shorter, less shielding) Part 72 license amendment is in rulemaking since it is a modified design; and since U1 crane is not single failure proof, the license amendment addresses the effect of loss of fuel integrity in a cask drop condition. The HI-TRAC (Short) was designed lighter since the U1 fuel is older and requires less shielding, and shorter to allow clearance at U1. The HI-TRAC (Short) is able to be handled by the U1 crane.
HI-TRAC (original design) is the generally licensed container that will be used at U2.
Multi-Purpose Canister (MPC)-inner container capable of handling 32 Fuel Elements.
HI-STORM-the overpack container that is used for final storage on the iSFSI pad.
UI General Sequence:
MPC is loaded into HI-TRAC (short). The assembly is lifted by U1 crane into the SFP.
U1 fuel will be put into debris containers, whether leaking or not. The debris containers will be placed into the MPC. Shielded lid is applied to MPC. Assembly is lifted out of SFP. Water is drained from HI-TRAC and MPC. MPC is forced-helium dehydrated with warm He. The lid is welded to the MPC and cover applied to HI-TRAC. The HI-TRAC assembly is moved to U2 by special transporter. At U2, the HI-TRAC is stacked on the HI-STORM by the new U2 crane. The MPC is lowered into the HI-STORM. The HI-STORM is closed and welded; and moved out of the FSB by a specially designed hydraulic rail-mounted skid system. Once outside the FSB, a specially designed mobile crane will move the HI-STORM assembly to the ISFSI pad. Five HI-TRAC loads will be required to remove all U1 fuel, U2 General Sequence:
Same as U1, essentially. HI-TRAC (normal design), with MPC inserted, is placed in U2 SFP. Fuel is loaded into the MPC racks, and the lid is applied. The HI-TRAC/MPC assembly is removed from the pool, dewatered and forced-He dehydrated. The HI-TRAC is stacked on HI-STORM. The MPC is lowered into HI-STORM. The HI-STORM is moved out of the FSB by a specially designed hydraulic rail-mounted skid system.
Once outside the FSB, a specially design mobile crane move the assembly to the ISFSI pad.
Estimated Milestones for IPEC's Groundwater-related Activities Entergy estimates the following (based on discussions dated August 22, 2007):
Ground Water final report to NRC early November 2007.
o An important aspect to the report will be the sampling results from a new riverfront monitoring well, MW-67. MW-67 is a deep well (200') ,with six
packer segments, that is positioned in the middle of both groundwater plumes (i.e., Unit-1 and Unit-2); and is expected! to be a major contributor to the bases for Entergy's dose assessment of groundwater migration to the Hudson River. Packer installation is currently in progress. The well.
is expected to be sampled early September. If there are delays in sampling, it may affect Entergy's ability to issue the report in November.
Unit 2 dry cask first fuel moves to pad are expected to begin in late October/early November, 2007, and extend into Ist quarter 2008.
Unit I fuel offload activities are expected to begin mid-July 2008. License amendment for the HI-TRAC container is in process.
All Unit 1 pools, are expected to be drained by the end CY 2008.
o Note: While termination of the leakage to groundwateris pending pool drain-down, removal of the fuel (the cause of the strontium-90 source term) is expected to result in significantdose reduction since the pool water will continue to be filtered and demineralized until drained.
Entergy expects to have the latest fish sampling results by mid-September; and intends to include the analysis and assessment in the final groundwater characterization report.
By the end of December 2007, Entergy expects to inform NRC of the following:
o Completion of characterization of the onsite contaminated groundwater condition; establishment of measures to effect mitigation and monitoring of the existing condition; and the establishment, implementation and maintenance of procedures, processes, and controls to assure continuous and effective assessment of the radiological condition of the site.
o Institution of changes to the environmental monitoring program (including the Off-site Dose Calculation Manual and affected procedures) sufficient to provide early radiological detection of new, or changes in existing, groundwater contamination having potential to migrate to the environment.
Planned NRC Activities In late September, NRC (Region I and RES), NYS/DEC, and ,USGS expect to meet with Entergy relative to its conclusions on site characterization and dose assessment modeling.
Upon Entergy's issuance of its final report, Entergy and NRC (with support from RES and USGS) will organize a public outreach. Given Entergy's current timeline, this may be early CY 2008.
Region I provided a bases and a proposed budget to NRR to continue support of limited split sampling throughout CY 2008, since groundwater leakage will continue until Unit 1 drain down; and initiated a "User Need" through NRR for RES support in reviewing Entergy's final report, and participation in a subsequent.
public outreach on this matter.
ORISE expects to complete strontium-90 analysis of fish samples by early September. Since strontium-90 is likely to be identified in some samples, Region I initiated a Technical Assistance Request with RES to research available information that would aid in providing perspective on current strontium-90 background in the environment. A communication plan will be developed, as necessary.
ISFSI and Crane Activity Status (8/23/07)
The ISFSI Pad is controlled and maintained within the Protected Area.
Alleyway rail system nearing completion (hydraulic skid for moving HI-STORM assemblies out of U2 FSB for transport by mobile crane to ISFSI)... expect completion in about 3 weeks.
Rail and electrical work in FSB remain.. .expect 2 to 3 weeks.
U2 Crane is installed and acceptance testing in progress. Currently, no specific load test is planned for the crane, as installed. 125% test was completed at manufacturer, disassembled and reassembled at IPEC. While it is reasonable not to load test over spent fuel pool, NRC inspectors will review QA records for the crane reassembly and determine if additional load testing is advisable prior to dry runs over the SFP pool..
Expect Entergy to initiate dry runs in September. NRC verification dry run verification is planned for mid-October.
NRC will be onsite w/o September 5 to observe cask welding performance demonstration (Gray); and perform inspection and review of U2 crane related QA documentation (Chaudrey). Also plan to review dry run and crane load testing concerns with Entergy.
Coatings have been applied to U1 pools that will be utilized for fuel transfer; cask loading work platform and cask welding platform are being installed.
Testing has been completed on U1 crane. Entergy is in the process of responding to RAI concerning license amendment relative to the non-single failure proof condition of the crane relative to potential drop of the HI-TRAC(short). Expectation is that activities will be completed by end of 2007.