ML19176A011

Attachment: CoC 1004 Amendment 16, Fqt Example (06/21/2019, E-Mail with Attachments from D. Shaw/Orano to N. Garcia-Santos/NRC Amendment 16 for the Model No. NUHOMS - Request to Supplement Request for Additional Information After Telephone

ML19176A011
Person / Time
Site:	07201004
Issue date:	06/21/2019
From:	Shaw D TN Americas LLC
To:	Garcia-Santos N Spent Fuel Licensing Branch
Garcia-Santos N
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ML19176A010	List: ML19175A284 ML19176A011 ML19176A014
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Page 1 of 1 CoC 1004 Amendment 16, FQT Example June 2019 This document provides an example of the FQT methodology proposed for CoC 1004 Amendment 16. The methodology is based largely on the proposed FQT methodology for the EOS system (CoC 1042 Amendment 1). CoC 1042 Amendment 1 is currently under NRC review.

In CoC 1042, the general approach is to include FQTs in the Technical Specifications (TS) only for the following conditions:

The maximum heat load in any HLZC in the system, applicable to all fuel, and The dominant fuel in the peripheral region of the bounding HLZC This example is based upon the 32PT DSC (UFSAR Appendix M). The 32PT DSC has four HLZCs, defined in TS Figure 1-2 through TS Figure 1-4a. The HLZCs have the following characteristics:

32PT DSC Maximum Heat in the DSC (kW)

Maximum Heat in Peripheral Region (kW)

HLZC 1 (TS Figure 1-2) 0.87 0.87 HLZC 2 (TS Figure 1-3) 1.2 1.2 HLZC 3 (TS Figure 1-4) 0.7 0.7 HLZC 4 (TS Figure 1-4a) 2.2 2.2 It is stated in UFSAR Section M.5.4.16 that HLZC 4 bounds HLZC 1, 2, or 3. For the bounding HLZC 4, the maximum heat in the basket and the maximum heat in the peripheral region is the same, 2.2 kW. Therefore, the 2.2 kW fuel dominates the reported dose rates and only one FQT for 2.2 kW fuel is required for the 32PT DSC.

TS Table 1-3n is for 2.2 kW fuel in the enrichment range 0.7% to 5.0%. TS Table 1-3p contains all of the decay heats in the enrichment range 0.2% to 0.6%, although only the 2.2 kW information is applicable in this example. For clarity, the 2.2 kW information in TS Table 1-3p has been added to TS Table 1-1n in the FQT provided with this example, as shown in the bullets below. The 2.2 kW FQT is applicable for all fuel loaded in the 32PT DSC HLZC 1, 2, 3, or 4.

The FQTs for the lower kW decay heats will not be 32PT DSC TS limits. Compliance with the lower kW FQTs is required, but lower cooling times could be justified with a site-specific analysis using the 10 CFR 72.48 process.

For the example to be considered by NRC, the following are provided herein:

The PWR Fuel Specification for the 32PT DSC is TS Table 1-1e.

o An abbreviated version of TS Table 1-1e as it pertains to FQT implementation is provided.

Example FQT 1-3n is included, made up of three pages:

o The table for 2.2 kW and 380 kgU o The table for 2.2 kW and 475 kgU o The 380 kgU and 475 kgU sub-tables from current Table 1-3p Note: Only 380 kgU and 475 kgU FQTs are provided because the 492 kgU FQTs are not applicable to the 32PT DSC.

The FQT notes are also provided with this example.

Lastly, for reference, the 32PT HLZC maps (TS Figures 1-2, 1-3, 1-4, and 1-4a) are included.

Table 1-1e PWR Fuel Specifications for Fuel to be Stored in the NUHOMS-32PT DSC (partial table only)

Minimum Cooling Time (excluding transfer in OS197L)

Per Table 1-3n Maximum Burnup (excluding transfer in OS197L) 62 GWd/MTU Minimum Assembly Average Initial Enrichment (excluding transfer in OS197L) 0.2 wt.% U-235 Decay Heat (excluding transfer in OS197L)

DSC and fuel assembly decay heat limits as specified in Figure 1-2, Figure 1-3, Figure 1-4, and Figure 1-4a

Tables Standardized NUHOMS System Technical Specifications Renewed Amendment 15 T-114 Table 1-3n PWR Fuel Qualification Table for 2.2 kW per Fuel Assembly (Minimum required years of cooling time after reactor core discharge for fuel with 380 kgU per Fuel Assembly)

BU GWd/MTU Maximum Assembly Average Initial U-235 Enrichment, wt. %

0.7 0.8 0.9 1.0 1.1 1.2 1.3 1.4 1.5 1.6 1.7 1.8 1.9 2.0 2.1 2.2 2.3 2.4 2.5 2.6 2.7 2.8 2.9 3.0 3.1 3.2 3.3 3.4 3.5 3.6 3.7 3.8 3.9 4.0 4.1 4.2 4.3 4.4 4.5 4.6 4.7 4.8 4.9 5.0 10 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 11 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 12 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 13 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 14 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 15 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 16 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 17 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 18 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 19 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 20 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 21 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 22 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 23 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 24 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 25 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 26 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 27 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 28 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 29 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 30 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 31 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 32 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 33 2.1 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 34 2.1 2.1 2.1 2.1 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 35 2.2 2.1 2.1 2.1 2.1 2.1 2.1 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 36 2.2 2.2 2.2 2.2 2.1 2.1 2.1 2.1 2.1 2.1 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 37 2.3 2.2 2.2 2.2 2.2 2.2 2.2 2.1 2.1 2.1 2.1 2.1 2.1 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 38 2.3 2.3 2.3 2.3 2.2 2.2 2.2 2.2 2.2 2.2 2.1 2.1 2.1 2.1 2.1 2.1 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 39 2.3 2.3 2.3 2.3 2.2 2.2 2.2 2.2 2.2 2.2 2.1 2.1 2.1 2.1 2.1 2.1 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 40 2.4 2.4 2.3 2.3 2.3 2.3 2.3 2.2 2.2 2.2 2.2 2.2 2.2 2.1 2.1 2.1 2.1 2.1 2.1 2.1 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 41 2.4 2.4 2.4 2.4 2.4 2.3 2.3 2.3 2.3 2.3 2.2 2.2 2.2 2.2 2.2 2.2 2.2 2.1 2.1 2.1 2.1 2.1 2.1 2.1 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 42 2.5 2.5 2.4 2.4 2.4 2.4 2.4 2.4 2.3 2.3 2.3 2.3 2.3 2.2 2.2 2.2 2.2 2.2 2.2 2.2 2.1 2.1 2.1 2.1 2.1 2.1 2.1 2.1 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 43 2.5 2.5 2.5 2.5 2.5 2.4 2.4 2.4 2.4 2.4 2.4 2.3 2.3 2.3 2.3 2.3 2.3 2.2 2.2 2.2 2.2 2.2 2.2 2.1 2.1 2.1 2.1 2.1 2.1 2.1 2.1 2.1 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 44 2.6 2.6 2.6 2.5 2.5 2.5 2.5 2.5 2.4 2.4 2.4 2.4 2.4 2.4 2.3 2.3 2.3 2.3 2.3 2.3 2.2 2.2 2.2 2.2 2.2 2.2 2.2 2.1 2.1 2.1 2.1 2.1 2.1 2.1 2.1 2.1 2.0 2.0 2.0 2.0 45 2.7 2.6 2.6 2.6 2.6 2.6 2.5 2.5 2.5 2.5 2.5 2.4 2.4 2.4 2.4 2.4 2.4 2.3 2.3 2.3 2.3 2.3 2.3 2.2 2.2 2.2 2.2 2.2 2.2 2.2 2.2 2.1 2.1 2.1 2.1 2.1 2.1 2.1 2.1 2.1 46 2.4 2.4 2.4 2.4 2.3 2.3 2.3 2.3 2.3 2.3 2.3 2.2 2.2 2.2 2.2 2.2 2.2 2.2 2.2 2.1 2.1 2.1 2.1 2.1 47 2.5 2.4 2.4 2.4 2.4 2.4 2.4 2.3 2.3 2.3 2.3 2.3 2.3 2.3 2.2 2.2 2.2 2.2 2.2 2.2 2.2 2.2 2.2 2.1 48 2.5 2.5 2.5 2.5 2.4 2.4 2.4 2.4 2.4 2.4 2.4 2.3 2.3 2.3 2.3 2.3 2.3 2.3 2.2 2.2 2.2 2.2 2.2 2.2 49 2.5 2.5 2.5 2.5 2.5 2.4 2.4 2.4 2.4 2.4 2.4 2.4 2.3 2.3 2.3 2.3 2.3 2.3 2.3 2.3 2.2 2.2 50 2.6 2.6 2.5 2.5 2.5 2.5 2.5 2.5 2.4 2.4 2.4 2.4 2.4 2.4 2.4 2.4 2.3 2.3 2.3 2.3 2.3 2.3 51 2.6 2.6 2.6 2.6 2.6 2.5 2.5 2.5 2.5 2.5 2.5 2.5 2.4 2.4 2.4 2.4 2.4 2.4 2.4 2.3 2.3 2.3 52 2.7 2.7 2.7 2.6 2.6 2.6 2.6 2.6 2.6 2.5 2.5 2.5 2.5 2.5 2.5 2.4 2.4 2.4 2.4 2.4 2.4 2.4 53 2.8 2.7 2.7 2.7 2.7 2.7 2.6 2.6 2.6 2.6 2.6 2.6 2.5 2.5 2.5 2.5 2.5 2.5 2.5 2.4 2.4 2.4 54 2.8 2.8 2.8 2.8 2.7 2.7 2.7 2.7 2.7 2.6 2.6 2.6 2.6 2.6 2.6 2.5 2.5 2.5 2.5 2.5 2.5 2.5 55 2.8 2.8 2.8 2.8 2.7 2.7 2.7 2.7 2.7 2.7 2.6 2.6 2.6 2.6 2.6 2.6 2.5 2.5 2.5 2.5 2.5 2.5 56 2.9 2.9 2.9 2.8 2.8 2.8 2.8 2.8 2.7 2.7 2.7 2.7 2.7 2.6 2.6 2.6 2.6 2.6 2.6 2.6 2.5 2.5 57 2.9 2.9 2.9 2.8 2.8 2.8 2.8 2.8 2.7 2.7 2.7 2.7 2.7 2.7 2.6 2.6 2.6 2.6 2.6 58 3.0 2.9 2.9 2.9 2.9 2.9 2.8 2.8 2.8 2.8 2.8 2.7 2.7 2.7 2.7 2.7 2.7 2.7 2.6 59 3.0 3.0 3.0 3.0 2.9 2.9 2.9 2.9 2.9 2.8 2.8 2.8 2.8 2.8 2.8 2.7 2.7 2.7 2.7 60 3.1 3.1 3.0 3.0 3.0 3.0 3.0 2.9 2.9 2.9 2.9 2.9 2.8 2.8 2.8 2.8 2.8 2.8 2.7 61 3.1 3.1 3.1 3.0 3.0 3.0 3.0 3.0 2.9 2.9 2.9 2.9 2.9 2.9 2.8 2.8 2.8 62 3.2 3.2 3.1 3.1 3.1 3.1 3.1 3.0 3.0 3.0 3.0 3.0 2.9 2.9 2.9 2.9 2.9 Enr. wt. %

0.7 0.8 0.9 1.0 1.1 1.2 1.3 1.4 1.5 1.6 1.7 1.8 1.9 2.0 2.1 2.2 2.3 2.4 2.5 2.6 2.7 2.8 2.9 3.0 3.1 3.2 3.3 3.4 3.5 3.6 3.7 3.8 3.9 4.0 4.1 4.2 4.3 4.4 4.5 4.6 4.7 4.8 4.9 5.0 (continued)

Note: The pages that follow Table 1-3p provide the explanatory notes and limitations regarding the use of this table.

Tables Standardized NUHOMS System Technical Specifications Renewed Amendment 15 T-115 Table 1-3n PWR Fuel Qualification Table for 2.2 kW per Fuel Assembly (Minimum required years of cooling time after reactor core discharge for fuel with 475 kgU per Fuel Assembly)

BU GWd/MTU Maximum Assembly Average Initial U-235 Enrichment, wt. %

0.7 0.8 0.9 1.0 1.1 1.2 1.3 1.4 1.5 1.6 1.7 1.8 1.9 2.0 2.1 2.2 2.3 2.4 2.5 2.6 2.7 2.8 2.9 3.0 3.1 3.2 3.3 3.4 3.5 3.6 3.7 3.8 3.9 4.0 4.1 4.2 4.3 4.4 4.5 4.6 4.7 4.8 4.9 5.0 10 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 11 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 12 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 13 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 14 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 15 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 16 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 17 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 18 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 19 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 20 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 21 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 22 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 23 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 24 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 25 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 26 2.1 2.1 2.1 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 27 2.1 2.1 2.1 2.1 2.1 2.1 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 28 2.2 2.2 2.2 2.2 2.1 2.1 2.1 2.1 2.1 2.1 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 29 2.3 2.2 2.2 2.2 2.2 2.2 2.2 2.1 2.1 2.1 2.1 2.1 2.1 2.1 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 30 2.3 2.3 2.3 2.3 2.3 2.2 2.2 2.2 2.2 2.2 2.1 2.1 2.1 2.1 2.1 2.1 2.1 2.1 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 31 2.4 2.4 2.3 2.3 2.3 2.3 2.3 2.3 2.2 2.2 2.2 2.2 2.2 2.2 2.1 2.1 2.1 2.1 2.1 2.1 2.1 2.1 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 32 2.4 2.4 2.4 2.4 2.4 2.3 2.3 2.3 2.3 2.3 2.3 2.2 2.2 2.2 2.2 2.2 2.2 2.2 2.1 2.1 2.1 2.1 2.1 2.1 2.1 2.1 2.1 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 33 2.5 2.5 2.5 2.4 2.4 2.4 2.4 2.4 2.4 2.3 2.3 2.3 2.3 2.3 2.3 2.2 2.2 2.2 2.2 2.2 2.2 2.2 2.2 2.1 2.1 2.1 2.1 2.1 2.1 2.1 2.1 2.1 2.1 2.0 2.0 2.0 2.0 2.0 2.0 2.0 34 2.6 2.5 2.5 2.5 2.5 2.5 2.4 2.4 2.4 2.4 2.4 2.4 2.3 2.3 2.3 2.3 2.3 2.3 2.3 2.2 2.2 2.2 2.2 2.2 2.2 2.2 2.2 2.1 2.1 2.1 2.1 2.1 2.1 2.1 2.1 2.1 2.1 2.1 2.1 2.0 35 2.6 2.6 2.6 2.6 2.5 2.5 2.5 2.5 2.5 2.5 2.4 2.4 2.4 2.4 2.4 2.4 2.3 2.3 2.3 2.3 2.3 2.3 2.3 2.2 2.2 2.2 2.2 2.2 2.2 2.2 2.2 2.2 2.1 2.1 2.1 2.1 2.1 2.1 2.1 2.1 36 2.7 2.7 2.7 2.6 2.6 2.6 2.6 2.5 2.5 2.5 2.5 2.5 2.5 2.4 2.4 2.4 2.4 2.4 2.4 2.3 2.3 2.3 2.3 2.3 2.3 2.3 2.3 2.2 2.2 2.2 2.2 2.2 2.2 2.2 2.2 2.2 2.2 2.2 2.1 2.1 37 2.8 2.7 2.7 2.7 2.7 2.6 2.6 2.6 2.6 2.6 2.6 2.5 2.5 2.5 2.5 2.5 2.4 2.4 2.4 2.4 2.4 2.4 2.4 2.3 2.3 2.3 2.3 2.3 2.3 2.3 2.3 2.3 2.2 2.2 2.2 2.2 2.2 2.2 2.2 2.2 38 2.8 2.8 2.8 2.8 2.7 2.7 2.7 2.7 2.7 2.6 2.6 2.6 2.6 2.6 2.5 2.5 2.5 2.5 2.5 2.5 2.4 2.4 2.4 2.4 2.4 2.4 2.4 2.4 2.3 2.3 2.3 2.3 2.3 2.3 2.3 2.3 2.3 2.2 2.2 2.2 39 2.8 2.8 2.8 2.8 2.8 2.7 2.7 2.7 2.7 2.7 2.6 2.6 2.6 2.6 2.6 2.5 2.5 2.5 2.5 2.5 2.5 2.4 2.4 2.4 2.4 2.4 2.4 2.4 2.3 2.3 2.3 2.3 2.3 2.3 2.3 2.3 2.3 2.3 2.2 2.2 40 2.9 2.9 2.9 2.8 2.8 2.8 2.8 2.8 2.7 2.7 2.7 2.7 2.7 2.6 2.6 2.6 2.6 2.6 2.5 2.5 2.5 2.5 2.5 2.5 2.5 2.4 2.4 2.4 2.4 2.4 2.4 2.4 2.4 2.3 2.3 2.3 2.3 2.3 2.3 2.3 41 3.0 3.0 2.9 2.9 2.9 2.9 2.9 2.8 2.8 2.8 2.8 2.7 2.7 2.7 2.7 2.7 2.6 2.6 2.6 2.6 2.6 2.6 2.5 2.5 2.5 2.5 2.5 2.5 2.5 2.4 2.4 2.4 2.4 2.4 2.4 2.4 2.4 2.4 2.3 2.3 42 3.1 3.0 3.0 3.0 3.0 2.9 2.9 2.9 2.9 2.9 2.8 2.8 2.8 2.8 2.7 2.7 2.7 2.7 2.7 2.7 2.6 2.6 2.6 2.6 2.6 2.6 2.5 2.5 2.5 2.5 2.5 2.5 2.5 2.5 2.4 2.4 2.4 2.4 2.4 2.4 43 3.1 3.1 3.1 3.1 3.0 3.0 3.0 3.0 2.9 2.9 2.9 2.9 2.9 2.8 2.8 2.8 2.8 2.8 2.7 2.7 2.7 2.7 2.7 2.7 2.6 2.6 2.6 2.6 2.6 2.6 2.5 2.5 2.5 2.5 2.5 2.5 2.5 2.5 2.5 2.4 44 3.2 3.2 3.2 3.1 3.1 3.1 3.1 3.0 3.0 3.0 3.0 2.9 2.9 2.9 2.9 2.9 2.8 2.8 2.8 2.8 2.8 2.7 2.7 2.7 2.7 2.7 2.7 2.6 2.6 2.6 2.6 2.6 2.6 2.6 2.6 2.5 2.5 2.5 2.5 2.5 45 3.3 3.3 3.2 3.2 3.2 3.2 3.1 3.1 3.1 3.1 3.0 3.0 3.0 3.0 3.0 2.9 2.9 2.9 2.9 2.8 2.8 2.8 2.8 2.8 2.8 2.7 2.7 2.7 2.7 2.7 2.7 2.7 2.6 2.6 2.6 2.6 2.6 2.6 2.6 2.6 46 3.0 3.0 2.9 2.9 2.9 2.9 2.9 2.8 2.8 2.8 2.8 2.8 2.8 2.7 2.7 2.7 2.7 2.7 2.7 2.7 2.6 2.6 2.6 2.6 47 3.0 3.0 3.0 3.0 3.0 2.9 2.9 2.9 2.9 2.9 2.9 2.8 2.8 2.8 2.8 2.8 2.8 2.7 2.7 2.7 2.7 2.7 2.7 2.7 48 3.1 3.1 3.1 3.1 3.0 3.0 3.0 3.0 3.0 2.9 2.9 2.9 2.9 2.9 2.9 2.8 2.8 2.8 2.8 2.8 2.8 2.7 2.7 2.7 49 3.1 3.1 3.1 3.1 3.1 3.0 3.0 3.0 3.0 3.0 2.9 2.9 2.9 2.9 2.9 2.9 2.9 2.8 2.8 2.8 2.8 2.8 50 3.2 3.2 3.2 3.2 3.1 3.1 3.1 3.1 3.1 3.0 3.0 3.0 3.0 3.0 2.9 2.9 2.9 2.9 2.9 2.9 2.9 2.8 51 3.3 3.3 3.2 3.2 3.2 3.2 3.2 3.1 3.1 3.1 3.1 3.1 3.0 3.0 3.0 3.0 3.0 3.0 2.9 2.9 2.9 2.9 52 3.4 3.4 3.3 3.3 3.3 3.3 3.2 3.2 3.2 3.2 3.2 3.1 3.1 3.1 3.1 3.1 3.0 3.0 3.0 3.0 3.0 3.0 53 3.5 3.4 3.4 3.4 3.4 3.3 3.3 3.3 3.3 3.2 3.2 3.2 3.2 3.2 3.1 3.1 3.1 3.1 3.1 3.1 3.0 3.0 54 3.5 3.5 3.5 3.5 3.4 3.4 3.4 3.4 3.3 3.3 3.3 3.3 3.3 3.2 3.2 3.2 3.2 3.2 3.1 3.1 3.1 3.1 55 3.6 3.6 3.5 3.5 3.5 3.4 3.4 3.4 3.4 3.4 3.3 3.3 3.3 3.3 3.2 3.2 3.2 3.2 3.2 3.1 3.1 3.1 56 3.7 3.7 3.6 3.6 3.6 3.5 3.5 3.5 3.5 3.4 3.4 3.4 3.4 3.3 3.3 3.3 3.3 3.3 3.2 3.2 3.2 3.2 57 3.7 3.7 3.6 3.6 3.6 3.5 3.5 3.5 3.5 3.4 3.4 3.4 3.4 3.4 3.3 3.3 3.3 3.3 3.3 58 3.8 3.8 3.7 3.7 3.7 3.6 3.6 3.6 3.6 3.5 3.5 3.5 3.5 3.4 3.4 3.4 3.4 3.4 3.3 59 3.9 3.9 3.8 3.8 3.8 3.7 3.7 3.7 3.6 3.6 3.6 3.6 3.5 3.5 3.5 3.5 3.5 3.4 3.4 60 4.0 3.9 3.9 3.9 3.9 3.8 3.8 3.8 3.7 3.7 3.7 3.7 3.6 3.6 3.6 3.6 3.5 3.5 3.5 61 4.0 4.0 4.0 3.9 3.9 3.9 3.8 3.8 3.8 3.8 3.7 3.7 3.7 3.7 3.6 3.6 3.6 62 4.1 4.1 4.1 4.0 4.0 4.0 3.9 3.9 3.9 3.8 3.8 3.8 3.8 3.7 3.7 3.7 3.7 Enr. wt. %

0.7 0.8 0.9 1.0 1.1 1.2 1.3 1.4 1.5 1.6 1.7 1.8 1.9 2.0 2.1 2.2 2.3 2.4 2.5 2.6 2.7 2.8 2.9 3.0 3.1 3.2 3.3 3.4 3.5 3.6 3.7 3.8 3.9 4.0 4.1 4.2 4.3 4.4 4.5 4.6 4.7 4.8 4.9 5.0 (continued)

Note: The pages that follow Table 1-3p provide the explanatory notes and limitations regarding the use of this table.

Table 1-3n PWR Fuel Qualification Table for 2.2 kW per Fuel Assembly (Continuation for low enrichments, this information is currently in Table 1-3p)

(Minimum required years of cooling time after reactor core discharge) 380 kgU Dec. Heat 2.2 kW/FA Burn-up, GWD/MTU Enrichment, wt.%

0.2 0.3 0.4 0.5 0.6 10 2.0 2.0 2.0 2.0 2.0 11 2.0 2.0 2.0 2.0 2.0 12 2.0 2.0 2.0 2.0 2.0 13 2.0 2.0 2.0 2.0 2.0 14 2.0 2.0 2.0 2.0 2.0 15 2.0 2.0 2.0 2.0 2.0 16 2.0 2.0 2.0 2.0 2.0 17 2.0 2.0 2.0 2.0 2.0 18 2.0 2.0 2.0 2.0 2.0 19 2.0 2.0 2.0 2.0 2.0 20 2.0 2.0 2.0 2.0 2.0 475 kgU Dec. Heat 2.2 kW/FA Burn-up, GWD/MTU Enrichment, wt.%

0.2 0.3 0.4 0.5 0.6 10 2.0 2.0 2.0 2.0 2.0 11 2.0 2.0 2.0 2.0 2.0 12 2.0 2.0 2.0 2.0 2.0 13 2.0 2.0 2.0 2.0 2.0 14 2.0 2.0 2.0 2.0 2.0 15 2.0 2.0 2.0 2.0 2.0 16 2.0 2.0 2.0 2.0 2.0 17 2.0 2.0 2.0 2.0 2.0 18 2.0 2.0 2.0 2.0 2.0 19 2.0 2.0 2.0 2.0 2.0 20 2.0 2.0 2.0 2.0 2.0

Tables Standardized NUHOMS System Technical Specifications Renewed Amendment 15 T-123 Notes: Table 1-3a through 1-3p:

Note A: General Notes These tables apply to the 24PTH, 32PT, 32PTH1, and 37PTH DSCs. Refer to the heat load zoning configuration figures for each DSC for a description of allowable heat loads (see Note B).

BU = Assembly Average burnup.

Use burnup and enrichment to look up minimum cooling time in years. Licensee is responsible for ensuring that uncertainties in fuel enrichment and burnup are correctly accounted for during fuel qualification.

Round burnup UP to next higher entry, round enrichments DOWN to next lower entry.

Fuel with an assembly average initial enrichment less than 0.2 wt.% U-235 or greater than 5.0 wt.% U-235 is unacceptable for storage.

Fuel with a burnup greater than 62 GWd/MTU is unacceptable for storage.

Fuel with a burnup less than 10 GWd/MTU is acceptable for storage after 2.0 years cooling.

These tables are applicable to fuel assemblies with or without control components.

The cooling times for failed, damaged, and intact assemblies are identical.

For fuel assemblies containing BLEU fuel pellets, add 3.0 years of additional cooling time.

For each fuel assembly heat load, tables are provided for uranium loadings of 380 kgU, 475 kgU, and 492 kgU. Use an FQT table with a uranium loading that exceeds the fuel assembly uranium loading. (Note that the 492 kgU tables are not applicable to the 32PT DSC.) Optionally, cooling times may be interpolated between tables based on the fuel assembly uranium loading, as described in Note C below.

The gray shaded areas of the tables represent unanalyzed regions. Limited interpolation of cooling times into the unanalyzed regions may be performed, as described in Note D below.

Requirements for reconstituted fuel assemblies are described in Note E below.

Example:

A fuel assembly with 488 kgU is to be loaded into the 24PTH DSC. The decay heat zone is limited to 1.7 kW per fuel assembly. The fuel assembly has an initial enrichment of 3.65 wt.% U-235 and a burnup of 41.5 GWd/MTU. The 1.7 kW FQTs are defined in Table 1-3l. Because 488 kgU is larger than 380 kgU and 475 kgU, the 492 kgU FQT applies.

This assembly is acceptable for storage after 3.3 years as defined by 3.6% (rounding down) and 42 GWd/MTU (rounding up) per the 492 kgU/FA section of Fuel Qualification Table 1-3l.

Note B: DSC Specific Notes 24PTH DSC heat load zoning configurations are defined in Figures 1-11 through 1-15a.

32PT DSC heat load zoning configurations are defined in Figures 1-2 through 1-4a.

32PTH1 DSC heat load zoning configurations are defined in Figures 1-26 through 1-28c.

37PTH DSC heat load zoning configurations are defined in Figures 1-39 and 1-40.

These notes will remain in the Technical Specifications, although table cross-referencing will change when various FQTs are moved.

Tables Standardized NUHOMS System Technical Specifications Renewed Amendment 15 T-124 24PTH DSC: WE 15x15 PLSAs shall be limited to a minimum assembly average enrichment of 1.2 wt.% U-235.

32PT DSC: The maximum basket assembly average burnup is limited to 55 GWd/MTU (individual fuel assemblies are limited to 62 GWd/MTU).

32PTH1 DSC: Failed fuel is limited to 250 kgU.

Note C: Interpolation of Cooling Times based on Uranium Loading If the fuel assembly uranium loading kgUnew falls within the range kgUlow < kgUnew < kgUhigh, where kgUlow and kgUhigh represent the uranium loadings of the fuel qualification tables, cooling times may be interpolated between fuel qualification tables using the following equation:

CTnew =

CThigh* ln(kgUnew /kgUlow) + CTlow* [ln(kgUhigh /kgUlow) - ln(kgUnew /kgUlow)]

ln( kgUhigh/kgUlow)

In this equation, CTlow and CThigh correspond to the cooling times in the fuel qualification tables for the low and high uranium loadings.

Because fuel qualification tables are available for 380 kgU, 475 kgU, and 492 kgU, interpolation may be performed either between the 380 kgU and 475 kgU tables or between the 475 kgU and 492 kgU tables. The fitting equation solution shall be rounded up to the nearest 0.1 years.

The above equation may be simplified for the two interpolation regions.

For 380 kgU < kgUnew < 475 kgU, CTnew = 4.4814*[CThigh*ln(kgUnew/380) - CTlow*ln(kgUnew/475)]

For 475 kgU < kgUnew < 492 kgU, CTnew = 28.4382*[CThigh*ln(kgUnew/475) - CTlow*ln(kgUnew/492)]

Note that the 475 kgU < kgUnew < 492 kgU equation does not apply to the 32PT DSC, which is limited to 475 kgU.

Examples of cooling time interpolation are provided in the UFSAR, Section M.5.6.

Note D: Extrapolation into Unanalyzed Region Limited extrapolation of FQT cooling times into the unanalyzed regions is allowed. The extrapolation may be performed for a maximum difference of 4 GWd/MTU in burnup or 0.4 wt.% in enrichment. The extrapolation may be performed for either fixed enrichment (variable burnup, fixed FQT column) or fixed burnup (variable enrichment, fixed FQT row). The methodology is:

Perform a regression analysis on the FQT cooling times and associated variable (either burnup or enrichment). Note: All FQT cooling times in either the row or column of data being extrapolated shall be used, even if many of the cooling times are the same.

Develop a fitting equation for the data. A fourth-order polynomial with parameters having at least six significant digits to avoid rounding errors is recommended.

Use the fitting equation to compute the extrapolated cooling time at the desired enrichment or burnup.

Add 0.2 years as additional margin.

An example application of the extrapolation methodology is provided in the UFSAR, Section M.5.2.6.

Alternately, the required cooling time in the unanalyzed region may be explicitly determined using the fuel qualification methodology documented in the UFSAR.

Tables Standardized NUHOMS System Technical Specifications Renewed Amendment 15 T-125 Note E: Requirements for Reconstituted Fuel Assemblies For reconstituted fuel assemblies with UO2 rods and/or Zr rods or Zr pellets and/or stainless steel rods, use the assembly average equivalent enrichment to determine the minimum cooling time.

For irradiated stainless steel rods, the following extra cooling times are required:

24PTH/32PTH1/37PTH DSCs: For 10 reconstituted rods, add an additional 1 year of cooling time if the FQT cooling time is < 10 years. Alternatively, the licensee can qualify fuel assemblies with fewer than the maximum number of irradiated stainless steel rods and reduce cooling time requirements.

32PT DSC: For 10 reconstituted rods, add an additional 1.5 years of cooling time; for 11 to 56 reconstituted rods, add an additional 6 years of cooling time. Alternatively, the licensee can qualify fuel assemblies with fewer than the maximum number of irradiated stainless steel rods and reduce cooling time requirements.

Example:

A fuel assembly has 7 irradiated stainless steel rods and is to be loaded in the 24PTH DSC. The fuel assembly has an initial enrichment of 5.0 wt.% U-235, burnup of 62 GWd/MTU, uranium loading of 370 kgU, and decay heat of 1.7 kW/FA. Per the 380 kgU part of FQT Table 1-3l, the minimum cooling time is 3.8 years. Because 3.8 years < 10 years, an additional 1.0 year of cooling is required. The minimum cooling time is 3.8 + 1.0 = 4.8 years.

Figures Standardized NUHOMS System Technical Specifications Renewed Amendment 15 F-2 Zone 2*

Zone 2*

Zone 2*

Zone 2*

Zone 2*

Zone 1*

Zone 1*

Zone 1*

Zone 1*

Zone 2*

Zone 2*

Zone 1*

Zone 1 Zone 1 Zone 1*

Zone 2*

Zone 2*

Zone 1*

Zone 1 Zone 1 Zone 1*

Zone 2*

Zone 2*

Zone 1*

Zone 1*

Zone 1*

Zone 1*

Zone 2*

Zone 2*

Zone 2*

Zone 2*

Zone 2*

Denotes locations where intact or damaged FAs may be stored.

Zone 1 Zone 2 Max. Decay Heat / FA (kW) 0.63 0.87 Max. Decay Heat / Zone (kW) 10.08 13.92 Max. Decay Heat / DSC (kW) 24.0 Notes:

(1)

Up to 28 damaged FAs may be stored in Zone 1 and Zone 2 only.

Figure 1-2 Heat Load Zoning Configuration 1 for the NUHOMS-32PT DSC

Figures Standardized NUHOMS System Technical Specifications Renewed Amendment 15 F-3 Zone 2**

Zone 1*

Zone 1*

Zone 2**

Zone 2**

Zone 1*

Zone 1*

Zone 1*

Zone 1*

Zone 2**

Zone 1*

Zone 1*

Zone 1 Zone 1 Zone 1*

Zone 1*

Zone 1*

Zone 1*

Zone 1 Zone 1 Zone 1*

Zone 1*

Zone 2**

Zone 1*

Zone 1*

Zone 1*

Zone 1*

Zone 2**

Zone 2**

Zone 1*

Zone 1*

Zone 2**

Denotes locations where intact or damaged FAs may be stored.

• • Denotes locations where intact or damaged FAs or FFCs may be stored.

Zone 1 Zone 2 Max. Decay Heat / FA (kW) 0.6 1.2 Max. Decay Heat / Zone (kW) 14.4 9.6 Max. Decay Heat / DSC (kW) 24.0 Notes:

(1)

The maximum allowable heat load per FFC is 0.8 kW.

(2)

Up to 28 damaged FAs may be stored in Zone 1 and Zone 2 only. When storing damaged FAs in Zone 1, intact FAs or Failed Fuel Cans (FFCs) may be stored in the remaining Zone 1 and Zone 2 locations.

(3)

Up to 8 FFCs may be stored in Zone 2 only. When storing FFCs in Zone 2, intact or damaged FAs may be stored in the remaining Zone 1 and Zone 2 locations.

Figure 1-3 Heat Load Zoning Configuration 2 for the NUHOMS-32PT DSC

Figures Standardized NUHOMS System Technical Specifications Renewed Amendment 15 F-4 Zone 1*

Zone 1*

Zone 1*

Zone 1*

Zone 1*

Zone 1*

Zone 1*

Zone 1*

Zone 1*

Zone 1*

Zone 1*

Zone 1*

Zone 1 Zone 1 Zone 1*

Zone 1*

Zone 1*

Zone 1*

Zone 1 Zone 1 Zone 1*

Zone 1*

Zone 1*

Zone 1*

Zone 1*

Zone 1*

Zone 1*

Zone 1*

Zone 1*

Zone 1*

Zone 1*

Zone 1*

Denotes locations where intact or damaged FAs may be stored.

Zone 1 Max. Decay Heat / FA (kW) 0.7 Max. Decay Heat / Zone (kW) 22.4 Max. Decay Heat / DSC (kW) 22.4 Notes:

(1)

Up to 28 damaged FAs may be stored in Zone 1 only.

Figure 1-4 Heat Load Zoning Configuration 3 for the NUHOMS-32PT DSC

Figures Standardized NUHOMS System Technical Specifications Renewed Amendment 15 F-5 Zone 3 Zone 5*

Zone 5*

Zone 3 Zone 3 Zone 2*

Zone 2*

Zone 2*

Zone 2*

Zone 3 Zone 5*

Zone 2*

Zone 1 Zone 1 Zone 2*

Zone 5*

Zone 5*

Zone 2*

Zone 1 Zone 1 Zone 2*

Zone 5*

Zone 4 Zone 2*

Zone 2*

Zone 2*

Zone 2*

Zone 4 Zone 4 Zone 5*

Zone 5*

Zone 4

• Denotes where damaged FAs may be stored.

Zone 1 Zone 2 Zone 3 Zone 4 Zone 5 Max. Decay Heat / FA (kW) 0.40 0.60 2.20 1.70 0.8(2)

Max. Decay Heat / DSC (kW) 24(1)

Notes:

(1)

Adjust payload to maintain the total DSC heat load within the specified limit.

(2)

If damaged FAs are loaded in any Zone 5 locations, the maximum allowable decay heat per FA in Zone 5 is 0.6 kW.

(3)

Up to 20 damaged FAs may be stored in Zones 2 and 5 only.

Figure 1-4a Heat Load Zoning Configuration 4 for the NUHOMS -32PT DSC