ML20076B337
| ML20076B337 | |
| Person / Time | |
|---|---|
| Site: | Arkansas Nuclear  |
| Issue date: | 06/27/1991 |
| From: | ENTERGY OPERATIONS, INC. |
| To: | |
| Shared Package | |
| ML20076B333 | List: |
| References | |
| NUDOCS 9107110172 | |
| Download: ML20076B337 (5) | |
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l PROPOSED TECilNICAI. SPEUIFICATION CilANGES
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5.3-REACTOR Specification
-5.3.1 Raftator Coro 5.3.1.1 The reactor coro contains approximately 93 metric tons of alightly enriched uranium dioxide pollets. The pollots are encapsulated In Zircoloy-4 tubing to form fuel rods. The reactor core is mado up of 177 fuel assemblies.
Each fuel assembly is fabricated with 208 fuel rods. -(1,2) Starting with Datch 11. a reconstitutable fue! assembly design is implemented.
This_dosign allows the replacement of up to 208 fuel rods in the assembly.
For Cycle 10-operation only, fuel assembly.NJ0539 will-contain one stainless steel filler rod ja place of one fuel rod.
5.3.1.2 The reactor coro approximates a right circulat cylinder with an equivalent diameter of 128.9 inches.and an activo baight of
--144 inches. The activo fuel length is approximately 142 luchos.(8) 5.3.1.3- -The average enrichment of the initial core is a nominal 2.62 weight percent-of U-235.
Thron fuel enrichments are used.In
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the initial core. The highest enrichment is less than 3.5 weight percent U-235.
l 5.3.1.4 Thorn are 60' full-length control rod assemblies (CRA) and 8 axial power shaping rod assemblies (ApSRA) distributed in the reactor coro as shown in FSAR Figure 3-60.
The.ful1-length CRA contain a 134-inch length of silver-indium-cadminum alloy clad with' stainless stool..Each APSRA contains a 63-inch
- length of Inconel-600 alloy.(3) 5.3.1.5 The core has 68 burnable poison spider. assemblies with si_milar dimensions as.the full-length control rods.-
The cladding is Zircaloy-4 filled with alumina-boron and placod in the core asLahown in FSAR Figure 3-2.
5.3.1.6 Reload fuel shall conform to the dosign and ovaluntion described in FSAR and shall not exceed an enrichment of 4.1 weight percent of U-235.
5.3.2 Reactor Coolant Systag 5.3.2.1 The reactor coolant system is designed and constructed in accordance with codo requiromonts.('*)
Amendment No. /03, //A, /4/,
114
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5.4 NEW AND SPENT FUEL STORAGE FACILITIES i
Applicability Applies to storage facilities for new and spent fuel assemblies.
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Objective To assure that both new and spent fuel assemblies will be stored in such a manner that an inadvertent criticality could nr.t occur.
EnnificAlinn 5.4.1 New Fuel Storage
- 1. New fuel assemblies may be stored in the Fresh Fuel Storage Rack (FFSR).
The FFSR consists of a nine by eight array of storage cells on nominal center to center distance of 21 inches in both directions. Ten interior storage cells, as shown in Figure 5.4-1, are precluded f rom use and will be physically blocked prior to any storage in the fresh fuel rack. This configuration is sufficient to maintain a K 77 of less than 0.98 with optimum moderation and 0.95 under normal conditions, based on fuel with an enrichment of 4.1 weight percent U-235, 2.
New fuel may also be stored in the spent fuel pool or in its shipping containers.
5.4.2 Soent Fuel Storage 1.
The spent fuel racks are designed and shall be maintained so that the calculated effective multiplication factor is no greater than 0.95 (including all known uncertainties) when the pool.is flooded with unborated water.
2.
The spent fuel pool and t he new fuel pool racks are designed as seismic Class I equipment.
REFERENCffi FSAR. Sectton 9.6 Amendment No. J /, / f>,
116
-FIGURE 5.4-1 ANO FFbR LOADING PATTERN
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NO NO i
NO NO NO NO NO NO NO NO "NO" Indicates a location in which fuel' londing.is prohibited.-
Amendment No.
116a
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ATTACllMENT 1 CRITICALITY ANALYSIS OF ANO-1 FRESil FUEL RACK 4
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