ML15244B263

Slides for Public Meeting with Arizona Public Service Company to Discuss License Amendment Request for Palo Verde Regarding Revised Methodology for Spent Fuel Pool Criticality Analysis

ML15244B263
Person / Time
Site:	Palo Verde
Issue date:	08/27/2015
From:	Edington R Arizona Public Service Co
To:	Watford M Plant Licensing Branch IV
Watford M
References
TAC MF6600, TAC MF6601, TAC MF6602
Download: ML15244B263 (5)

Text

8/27/2015 Follow-up to Pre-submittal Meeting for Updated New Fuel and Spent Fuel Pool Criticality Analysis September 1, 2015 Purpose Address additional topics brought up in the pre-submittal meeting on May 11, 2015 2

1

8/27/2015 Topics

• Spent fuel pool arrays

- See attached proposed Tech Spec page

• New fuel storage

- Treatment of concrete and elevated temperature specifically addressed in analysis 3

Topics (contd)

• Soluble boron

- Current Tech Spec 3.7.15 remains unchanged at 2150 ppm boron

• Neutron absorber monitoring program

- New Tech Spec program based on industry operating experience

- Existing stainless steel L-inserts not included 4

2

8/27/2015 Topics (contd)

• Fuel reconstitution

- Definition

- Enrichment and burnup limits

• Linked applications

- Licensing discussion 5

Topics (contd)

• Transition plan

- Both sets of pages in Tech Specs

- Module-by-module transition

- When work starts in a unit, it will continue in a controlled manner until complete 6

3

8/27/2015 Additional Questions ?

7 4

PROPOSED Spent Fuel Assembly Storage 3.7.17 Figure 3.7.17-1 Allowable Storage Arrays Array A 1 X Two Region 1 assemblies (1) checkerboarded with two blocked cells (X). The Region 1 assemblies are each in a cell with an L-insert. No NETCO-SNAP-IN inserts are credited. X 1 Array B 1 TC Two Region 1 assemblies (1) checkerboarded with two cells containing trash cans (TC). The Region 1 assemblies are each in a cell with an L-insert. Every cell without an L-insert must contain a NETCO-SNAP-IN insert. TC 1 Array C 2 X Two Region 2 assemblies (2) checkerboarded with one Region 3 assembly (3) and one blocked cell (X). The Region 2 assemblies are each in a cell with an L-insert. The Region 3 assembly is in a cell containing a NETCO-SNAP-IN insert. 3 2 Array D 2 4 One Region 2 assembly (2) checkerboarded with three Region 4 assemblies (4). The Region 2 assembly and the diagonally located Region 4 assembly are each in a storage cell with an L-insert. The two storage cells without an L-insert contain a 4 4 NETCO-SNAP-IN insert.

Array E 5 5 Four Region 5 assemblies (5). Two storage cells contain an L-insert. One cell contains a NETCO-SNAP-IN insert. One storage cell contains no insert.

5 5 Array F 6 6 Four Region 6 assemblies (6). Two storage cells contain an L-insert. The other two cells contain no inserts.

6 6 Notes:

1. The shaded locations indicate cells which contain an L-insert.

2. A blocked cell (X) contains a blocking device and only water in the active fuel region.

3. NETCO-SNAP-IN inserts must be oriented in the same direction as L-inserts.

4. NETCO-SNAP-IN inserts are only located in cells without L-inserts.

5. Any cell containing fuel or a TC may instead be an empty (water-filled) cell in all storage arrays.

6. Any storage array location designated for a fuel assembly may be replaced with non-fissile material.