ML18016A770

From kanterella
Jump to navigation Jump to search
Proposed Tech Specs 5.6, Fuel Storage, Increasing Spent Fuel Storage Capacity by Adding Rack Modules to Pools C & D
ML18016A770
Person / Time
Site: Harris Duke Energy icon.png
Issue date: 12/23/1998
From:
CAROLINA POWER & LIGHT CO.
To:
Shared Package
ML18016A769 List:
References
NUDOCS 9812290058
Download: ML18016A770 (5)
v • d • e


Text

Enclosure 5 to Serial: HNP-98-188 SHEARON HARRIS NUCLEARPOWER PLANT DOCKET NO. 50-400/LICENSE NO. NPF-63 REQUEST FOR LICENSE AMENDMENT SPENT FUEL STORAGE TECHNICALSPECIFICATION PAGES q8jpP90058 98%223 PDR ADOCK 050Q0400'=

't

>DR Q

DESIGN FEATURES 8 EFo<<

5e6 FUEL STORAGE CRITICALITY 5.6.1.a The spent fuel storage racks are designed and shalL be maintained with a k E less than or equaL to 0.95 when flooded with unborated

water, which incfudes an allowance Eor uncertainties as described in Section 4.3.2.6 of the FSAR.

This is assured by maintaining:

l.

A nominal 10.5 inch center-to-center distance between fuel assemblies placed in the PWR storage racks and 6.25 inch center-to"center distance in the BWR storage racks.

2.

The maximum core geometry K

Eor PWR fueL assemblies less than or equal to 1.470 at 68'F.

5.6.1.b The keff for new fuel Eor the first core Loading stored dry in the spent fuel storage racks shall not exceed 0.98 when aqueous foam moderation is assumed.

DRAINAGE 5.6.2 The new and spent fuel storage pools are designed and shalL be main-tained to prevent inadvertent draining of the pools below elevation 277.

CAPACITY 5.6.3 The new and spent fuel storage pools are designed Eor a storage capacity of 1832 PWR fuel assemblies and a variable number of PWR and BWR storage spaces in 48 interchangeable 7x7 PWR and llxll BWR racks.

These interchangeable racks will be installed as needed.

Any combination of BWR and PWR racks may be used.

5.7 COMPONENT CYCLIC OR TRANSIENT LIMIT 5.7.1 The components identiEied in Table 5.7-1 are designed and shall be maintained within the cyclic or transient limits of Table 5.7-1.

SHEARON HARRIS - UNIT 1 5-7 Amendment No.

12

DESIGN FEATURES 5.6 FUEL STORAGE CRITICALITY 5.6.1 The spent fuel storage racks are designed and shall be maintained with a k,iiless than or equal to 0.95 when flooded with unborated water, which includes an allowance for uncertainties as described in Section 4.3.2.6 ofthe FSAR.

The reactivity margin is assured for pools 'A'nd 'B'y maintaining a nominal 10.5 inch center-to-center distance between fuel assemblies placed in the fluxtrap style PWR storage racks and 6.25 inch center-to-center distance in the BWR storage racks.

The reactivity margin is assured for pools 'C'nd 'D'y maintaining a nominal 9.017 inch center-to-center distance between fuel assemblies placed in the non-flux trap style PWR storage racks and 6.25 inch center-to-center distance in the BWR storage racks.

The followingrestrictions are also imposed through administrative controls:

a. PWR assemblies must be within the "acceptable range" ofthe burnup restrictions shown in Figure 5.6.1 prior to storage in Pools 'C'r

'D'.

BWR assemblies are acceptable for storage in Pool 'C'rovided that the maximum planar average enrichments is less than 4.6 wt% U235 and K;<is less than or equal to 1.32 for the standard cold core geometry (SCCG).

DRAINAGE 5.6.2 The pools 'A', 'B', 'C'nd 'D're designed and shall be maintained to prevent inadvertent draining ofthe pools below elevation 277.

CAPACITY 5.6.3.a Pool 'A'ontains six (6 x 10 cell) fluxtrap type PWR racks and three (11 x 11 cell)

BWR racks for a total storage capacity of723 assemblies. Pool 'B'ontains six (7 x 10 cell),

five (6 x 10 cell), and one (6 x 8 cell) fluxtrap style PWR racks and seventeen (11 x 11 cell)

BWR racks and is licensed for one additional (11 x 11 cell) BWR rack that willbe installed as needed.

The combined pool 'A'nd 'B'icensed storage capacity is 3669 assemblies.

5.6.3.b Pool 'C's designed to contain a combination of PWR and BWR assemblies. Pool

'C'an contain two (11 x 9 cell) and nine (9 x 9 cell) PWR racks for storage of 927 PWR assemblies.

Pool 'C'an contain two (8 x 13 cell), two (8 x 11cell), six (13 x 11 cell), and nine (13 x 13 cell) BWR racks for storage of2763 BWR assemblies. The (9 x 9 cell) PWR racks and the (13 x 13 cell) BWR racks are dimensioned to allow interchangeability between PWR or BWR storage rack styles as required. The racks in pool 'C'illbe installed as needed.

Shearon Harris Unit 1 5-7 Amendment No.

DESIGN FEATURES 5.6.3.c Pool 'D'ontains a variable number ofPWR storage spaces. These racks willbe installed as needed.

Pool 'D's designed for a maximum storage capacity of 1025 PWR assemblies.

5.6.3.d The heat load from fuel stored in Pools 'C'nd 'D'hall not exceed 1.0 MBtu/hr.

5.7 COMPONENT CYCLICOR TRANSIENTLIMIT 5.7.1 The components identified in Table 5.7-1 are designed and shall be maintained within the cyclic or transient limits ofTable 5.7-1.

Shearon Harris Unit I 5-7a Amendment No.

DESIGN FEATURES 45000 40000 Acceptable Burnup Domain 35000 30000 5'5000 20000 15000 Unacceptable Burnup Domain 10000 5000 2.5 3

35 4

Enrichment (ivt% U235) 4.5 Figurc 5.6.1: Burnup Versus Enrichment forPWR Fuel Shearon Harris Unit 1 Amendment No.

Retrieved from "https://kanterella.com/w/index.php?title=ML18016A770&oldid=5043372"