Dry Cask Storage Project - INMM

ZIONSOLUTIONSLLC
An EnergySolutions Company
Dry Cask Storage Project
William J. Szymczak, Fuel Specialist

01/15/2014 INMM XXIX Spent Fuel Mgt Seminar

FUEL TRANSFER NOW IN PROGRESS! ZIONSOLUTIONSLLC
An EnergySoluitons Company

Dry Cask Operations Have Commenced!!!

• First Fuel assembly loaded 12/18/13 23:59
• First Cask placed on ISFSI PAD 01/09/2014

• Second cask loaded and is being processed

01/15/2014 INMM XXIX Spent Fuel Mgt Seminar 2

1st CASK LOAD ZIONSOLUTIONSLLC
An EnergySoluitons Company

01/15/2014 INMM XXIX Spent Fuel Mgt Seminar 3

SS Neutron Absorber Retainer ZIONSOLUTIONSLLC
An EnergySoluitons Company
First Cask Processing Challenges: 4
- Bent SS neutron absorber retainer
- Measurement of TSC blowdown–
flow totalizer anomaly
- Helium backfill fitting leak
- TSC corrosion/water clarity
- Extremely cold weather

01/15/2014 INMM XXIX Spent Fuel Mgt Seminar

Presentation Overview ZIONSOLUTIONSLLC
An EnergySoluitons Company

• Zion Station Background
• Zion Station Decommissioning
• ZS D&D Project Status
• Fuel Modification & Inspection Campaigns
• Fuel Load Planning/Fuel Load Plan
• Final Comments
• Acknowledgement

01/15/2014 INMM XXIX Spent Fuel Mgt Seminar 5

ZNPS Background ZIONSOLUTIONSLLC
An EnergySoluitons Company

• Two - 4-Loop, 1100 MWe W – PWRs
• Unit-1 Operated 6/19/73 – 2/21/97 (15-cycles)
• Unit-2 Operated 12/24/73 – 9/19/96 (14-cycles)
• Site Permanently shut down in January 1998
• Site in SAFSTOR: 1998 – 2010
• 2226 spent fuel assemblies stored in a common fuel pool

01/15/2014 INMM XXIX Spent Fuel Mgt Seminar 6

Zion Station Decommissioning ZIONSOLUTIONSLLC
An EnergySoluitons Company

September 2010

ZionSolutions assumed Part 50 License from Exelon to dismantle and
decommission Zion Nuclear Power Station (ZNPS) including transfer of
fuel to dry cask storage

01/15/2014 INMM XXIX Spent Fuel Mgt Seminar 7

Asset Sale Agreement ZIONSOLUTIONSLLC
An EnergySoluitons Company

Asset Sale Agreement with Exelon Nuclear, ZionSolutions has;
– Acquired the assets of Zion Station (trust fund)
– Leased the land from Exelon
– Taken possession of spent nuclear fuel and
– Transferred the Part 50 NRC licenses for Zion Station
– Assumed all liabilities

U-2 Reactor Head Removal

8

ZNPS Decommissioning Schedule Milestones ZIONSOLUTIONSLLC
An EnergySoluitons Company
• 2012/2013 Preparation to transfer spent 9
nuclear fuel into dry storage canisters

• 2013/2014 Reactor Vessel internals
segmentation complete

• 2014 Complete transfer of spent nuclear fuel

• 2014 Complete segmentation of Reactor
Vessels

• 2014 Take the plant cold and dark

• 2015 Complete removal of contaminated
equipment

• 2016 Complete demolition of the Turbine
and support buildings

• 2017 Complete all major demolition

• 2018-2019 Complete site restoration and
Final Status Surveys

• 2020 Complete Project

01/15/2014 INMM XXIX Spent Fuel Mgt Seminar

2013 Major Work Activity ZIONSOLUTIONSLLC
An EnergySoluitons Company

 Complete Construction of the ISFSI
 Accept fuel transfer equipment
 Commence fuel transfer operations
• Complete U-2 reactor internals segmentation
• U-1 reactor internals segmentation (underway)
• Commence equipment removal from Aux building
• Continue MARSAME release of balance of plant
• LTP development
• Shipment of B&C waste to WCS
• Rail shipments of LLW to Clive

10

ZNPS Decommissioning Schedule Milestones ZIONSOLUTIONSLLC
An EnergySoluitons Company

Transfer Fuel to Dry Cask Storage *

• 2011-2013 – Fuel-related Preparatory Activities
• 2011-2013 – Dry Cask Transfer Preparatory Activities
• 2013-2014 - Fuel Transfer to Dry Cask Storage (ISFSI)

*ZS selected NAC MAGNASTOR/MAGNATRAN System

01/15/2014 INMM XXIX Spent Fuel Mgt Seminar 11

Zion Dry Cask Storage Status 01/15/2014 ZIONSOLUTIONSLLC
An EnergySoluitons Company

ISFSI Physical Facility – complete ISFSI Security Plan – Approval pending
• 2 -148-ft x 68-ft concrete pads &35-ft wide alleyway • Completion of NRC review process
• Heavy Haul Path
• Monitoring Building
• Security Systems

01/15/2014 INMM XXIX Spent Fuel Mgt Seminar 12

Zion Dry Cask Storage Status 01/15/2014 Cont. ZIONSOLUTIONSLLC
An EnergySoluitons Company

• NAC Hardware on-site
– 2 MTCs (MAGNASTOR transfer casks) w/adapter plates & lift yokes
– VCT (vertical cask transporter) & LPCRT (low profile cask rail transporter)
– 61 fuel & 4 GTCC VCCs (vertical concrete casks) constructed
– 20 of 31 TSCs,17 of 30 TSCDFs, 4 of 4 GTCC TSCs delivered to date
– 99 DFCs (damaged fuel cans) (includes 2 spares)
– 2131 TSC fuel spacers

Concrete Cask MAGNASTOR System 2 Transfer Casks
61 Fuel + 4 GTCC for SNF and GTCC

Canister – 37 FAs Transfer Cask

01/15/2014 INMM XXIX Spent Fuel Mgt Seminar 13

ZS Dry Cask Storage – NAC Components ZIONSOLUTIONSLLC
An EnergySoluitons Company
LIFT YOKE

TSCs

VCC Const. Pad

CASK DECON PIT

METAL
TRANSFER
CASK (MTC)

VCT with VCC INMM XXIX Spent Fuel Mgt Seminar 14
01/15/2014

Fuel Modification & Inspection Campaigns ZIONSOLUTIONSLLC
An EnergySoluitons Company

• Westinghouse Mod (ITTR-I) Inspection Campaign (7/2011-3/2012)
– ITTRs installed in 1451 FAs
– GTAs installed in 3 FAs
– 2226 FAs visual inspection
– 392 FAs for RTN lock-tube inspection
– 196 FAs bottom nozzle debris inspection
– 1369 FAs vacuum sipped
– 15 loose rods consolidated in skeleton cage guide tubes
– 1 FA cut & removed stuck source insert to allow GTA installation

• Westinghouse Mod (ITTR-II) Inspection Campaign (June 2013)
– ITTRs installed in an additional 27 FAs

• 97 F/As will be packaged in DFCs based on results of fuel inspection and fuel
characterization/classification reviews

01/15/2014 INMM XXIX Spent Fuel Mgt Seminar 15

FUEL LOAD PLANNING PROCESS ZIONSOLUTIONSLLC
An EnergySoluitons Company

• Fuel load planning requires the making of many interconnected
storage decisions first at the F/A level, then cask level and, finally,
ISFSI pad level.

• Decisions rely on a large body of information

– Storage regulatory requirements (Part 72, MAGNASTOR CoC/SAR)
– Transportation regulatory requirements (Part 71, MAGNATRAN CoC/SAR)
– Offsite Dose Calculations
– Fuel classification / Fuel characterization results
– Cask Modeling Requirements (CASKLOADER)
– Full pad loading / alternative assembly strategy
– Site Specific Requirements (e.g., proximity to site boundary)

• ZS fuel load plan must ensure requirements of both storage and
transportation are met.

01/15/2014 INMM XXIX Spent Fuel Mgt Seminar 16

FUEL LOAD PLANNING – FUEL SELECTION ZIONSOLUTIONSLLC
An EnergySoluitons Company

Key drivers affecting fuel selection
• Meeting offsite dose calculation assumptions for fully loaded ISFSI

– 7 F/A zones defined (BU, Enrichment, Cool Time)
– 6 Cask types defined each with unique F/A zone-cell assignments
– Individual casks assigned by type to specific pad locations

• MAGNATRAN criticality requirements

– Reliance on BU credit for transportation criticality accident
– F/As must meet minimum burnup requirements based initial enrichment
– 7 Cask criticality classes applied (intact fuel -37,36, 35 & 33 pay loads,

damaged fuel – 37-3.8, 37-4.05 and 36 payloads)
– F/As not meeting min-burnup require an RCCA inserted

• MAGNASTOR/MAGNATRAN restrictions for certain hardware

– RCCAs & NSAs – restricted to center 3x3 cell locations
– NSAs & FAs with irradiated SS inert rods – limited to one per cask

01/15/2014 INMM XXIX Spent Fuel Mgt Seminar 17

FUEL LOAD PLANNING – Other Considerations ZIONSOLUTIONSLLC
An EnergySoluitons Company

ALTERNATE ASSEMBLY STRATEGY

• Required in the unlikely event a F/A is damaged during loading
process

– Two spare DFCs reserved for this purpose

• Two DFC-capable TSCs contain designated F/A alternates

– FSP-04 in ISFSI Pad Row H (last of type 1 casks)
– FSP-56 in ISFSI Pad Row E (very last cask to be loaded)
– Contain F/As that can be substituted into predecessor casks to permit

continuation of loading

• F/As damaged during the loading process will be packaged in DFCs
loaded into an alternate-designated TSC

• All F/As must eventually be loaded

01/15/2014 INMM XXIX Spent Fuel Mgt Seminar 18

FUEL LOAD PLAN – SUMMARY ZIONSOLUTIONSLLC
An EnergySoluitons Company
• 61 Fuel Selection Packages (FSPs)
• ISFSI Pad VCC locations assigned
• Fully compliant with regulatory

requirements

– MAGNASTOR CoC & FSAR
– Draft MAGNATRAN CoC &SAR
– Offsite dose analysis

01/15/2014 INMM XXIX Spent Fuel Mgt Seminar 19

Final comments ZIONSOLUTIONSLLC
An EnergySoluitons Company

• Fuel loading planning benefitted greatly from ~4-years of discovery

– ITTR & Inspection campaigns
– Dealing with anomalies & issues
– Constant researching of the “What’s, Why’s and “That can’t be right’s!”

– Very low chances of last minute surprises due to lack of discovery

• Planning for transfer of all fuel in one campaign and meeting both
storage and transportation requirements is challenging

• Focus now turns to

– Production of Cask Load Packages including spacer/DFC matrixes and
fuel/TSC movesheets

– Support of Fuel Loading Campaign (24-7 operations)

01/15/2014 INMM XXIX Spent Fuel Mgt Seminar 20

DCS Project – Fuel Transfer Prep. Activities ZIONSOLUTIONSLLC
An EnergySoluitons Company

QUESTIONS?

01/15/2014 INMM XXIX Spent Fuel Mgt Seminar 21

ZIONSOLUTIONSLLC
An EnergySoluitons Company

BACK-UP slides

01/15/2014 INMM XXIX Spent Fuel Mgt Seminar 22

FUEL LOAD PLANNING – F/A Zone Definitions ZIONSOLUTIONSLLC
An EnergySoluitons Company

Assembly Zone Fuel Parameter Definitions

Assembly Max. Burnup Min. Cool Min.
Zone (GWd/MTU) Time (years) Enrichment
(w/o 235U)
1a 20.1 36.47
1b 30.4 35.39 2.24
2 34.7 29.25
3 36.9 26.26 2.24
4 32.3 20.00
DFC Corner A 48.4 24.71 2.8
DFC Corner B 48.4 16.77
2.7

3.2

2.8

3.2

01/15/2014 INMM XXIX Spent Fuel Mgt Seminar 23

FUEL LOAD PLANNING – Cask Type Definitions ZIONSOLUTIONSLLC
An EnergySoluitons Company

Assembly Zone Basket Locations by Cask Type TSC Basket – Symmetric Locations

Cask Type Assembly Zones Basket Locations
1 1a #7
2 1b
2a 2 #6,#8
2b 4 #5
3 2
3a 4 #1, #2, #3, #4
2 #6, #7, #8
3
4 #1, #2, #3, #4, #5
2 #6,#7
#8
DFC Corner A
4 #1, #2, #3, #4, #5
3 #6,#7
4 #8

DFC Corner B #1, #2, #3, #4, #5
3 #6, #7, #8
4
#1, #2, #3, #4, #5
#8

#6,#7
#1, #2, #3, #4, #5

01/15/2014 INMM XXIX Spent Fuel Mgt Seminar 24

FUEL LOAD PLANNING – Cask Type 1 Example ZIONSOLUTIONSLLC
An EnergySoluitons Company

01/15/2014 INMM XXIX Spent Fuel Mgt Seminar 25

FUEL LOAD PLANNING – Cask Type 3A Example ZIONSOLUTIONSLLC
An EnergySoluitons Company

01/15/2014 INMM XXIX Spent Fuel Mgt Seminar 26

FUEL LOAD PLANNING – ISFSI Pad Layout ZIONSOLUTIONSLLC
An EnergySoluitons Company

01/15/2014 INMM XXIX Spent Fuel Mgt Seminar 27

CFH/LCFH/FH ZIONSOLUTIONSLLC
An EnergySoluitons Company

ZNPS Defueled Tech Spec Requirements

• Certified Fuel Handler = SS/SRO for decom. plants
• All fuel handling operations must be directly supervised by CFH

ZS created Limited-CFH (LCFH) position and training program for SFP
fuel handling supervision (Yankee decom plants established this precedence)

• LCFH = Limited SRO/Fuel Handling Supervisor for decomm plants
• LCFH reports to CFH/SS to maintain TS compliance

ZS contracted for experienced fuel handling personnel and qualified them
to ZNPS LCFH and Fuel Handler training programs

ZS utilized ZS Fuel Group Supervisors (FGS) to act in an oversight and
facilitator role for contracted fuel handling

28

Campaign Challenges ZIONSOLUTIONSLLC
An EnergySoluitons Company

• Fuel Building Environmental Conditions - Summer 2011

– Hot/humid conditions
– Marginal cooling from ventilation system
– Utilized “spot coolers” and established “cool room” tent in work area
– Established RP-approved drinking water protocol in work areas
– Limited worker stay times and rotated crews more frequently

• Human Performance Issues as field campaign ramped up

– Snagging of tools/poles due to unfamiliarity with ZNPS SFP and Bridge Crane
– Dropped FME items
– Shift turnover communications
– Procedure place-keeping
– Documentation consistency between crews/shifts

• Movesheet Generation Software

– Encountered difficulties implementing TracWorks movesheet generation software
– Database wasn’t accurate regarding SFP inserts status
– Numerous “bugs” found for certain unique ZNPS circumstances (loose rods, etc.)
– As result, movesheets for entire campaign had to be generated manually

01/15/2014 INMM XXIX Spent Fuel Mgt Seminar 29

Campaign Challenges (cont.) ZIONSOLUTIONSLLC
An EnergySoluitons Company

• Tooling/Equipment Issues

– Underwater Tooling (both site and Westinghouse)

• Snagged on interferences
• Inserts became stuck in two different handling tools
• Limit switch adjustments

– SFP Bridge Crane

• Control pushbutton reliability issues
• Crane crabbing causing seismic restraint bars rubbing on rails
• Lost production due to eventual guide roller wheel failure and replacement

– Fuel Building Roof Hoist

• Declared inoperable following inspection by Crane Vendor
• Crew de-mobilized for one week to allow for replacement

– Unexpected SFP interferences

• Bent rack cell wall
• Sonar Level Detector
• Weir Gate Bracket
• Inadequate fuel assembly lift height clearances w/new load cell/shackle config

01/15/2014 INMM XXIX Spent Fuel Mgt Seminar 30

BONE YARD ZIONSOLUTIONSLLC
An EnergySoluitons Company

The following slides were removed from the original
6/26/2012 presentation.

31

DAMAGED FUEL POPULATION ZIONSOLUTIONSLLC
An EnergySoluitons Company

• 97 F/As will be packaged in DFCs based on results of fuel inspection
and fuel characterization/classification reviews

# of F/As Remarks
9 Leakers (previously identified)
43 Leakers (vacuum sipping)
6 Damaged (visual inspection)
1 Failed Rod Storage Basket (13 leaking fuel rods)
1 Damaged F/A skeleton cage (15 intact rods in guide tubes)
59 subtotal
36 High burnup F/As (>45 GWd/MTU)
95 subtotal
1 Near-high burnup F/A (fuel classification)
1 Undamaged F/A with SS insert rod w/inadequate documentation
97 Total DFCs planned to be used

01/15/2014 INMM XXIX Spent Fuel Mgt Seminar 32

DAMAGED FUEL POPULATION CONT. ZIONSOLUTIONSLLC
An EnergySoluitons Company
• Examples of damaged F/A’s:

F/A Remarks
Z26A
H04C Broken fuel rod (1)
C15P
Two consecutive sections of grid straps missing (>60-inches)
C62R
Damaged grid straps causing DFC envelope concern
B64R (attempted “repair” resulted in pinhole leak in one rod)

Y48 F/A with stuck secondary source rodlets (not classified as
damaged)
FRSB
F/A with broken/stuck secondary source rod let (not classified as
damaged)

Damaged skeleton cage – 15 loose (intact) fuel rods from W
high burnup campaign F/As

13 loose (leakers) fuel rods from past reconstitution campaigns

01/15/2014 INMM XXIX Spent Fuel Mgt Seminar 33

Zion Dry Cask Storage Status 01/15/2014 Cont. ZIONSOLUTIONSLLC
An EnergySoluitons Company

• Fuel Transfer Preparations

– Cask processing and transfer equipment ready
– FT procedures approved and personnel trained
– NRC dry runs completed

• FHB Overhead Crane upgraded (single-failure proof)
• SFP Bridge Crane, North & South Hoists improvements (not yet

resolved???)
• Fuel Load Plan complete

– 61 Fuel Selection Packages (FSPs)
– ISFSI Pad VCC Location Assignments
– TSC Loading Sequence
– Alternate Fuel Assembly Strategy

• 72.212 Report complete and NRC reviewed
• Cask Loading Operations to begin upon receipt of NRC approval (S-Plan)

01/15/2014 INMM XXIX Spent Fuel Mgt Seminar 34

FUEL LOAD PLANNING – Items to Store ZIONSOLUTIONSLLC
An EnergySoluitons Company

Fuel/Item to be stored Quantity
Fuel Assemblies + Failed Rod Basket + Skeleton Cage 2226+1+1

Rod Cluster Control Assemblies (RCCAs) 231
Thimble Plug Devices (TPDs) 505
293
Burnable Poison Rod Assemblies (BPRAs) 694
Wet Annular Burnable Absorber Assemblies (WABAs)
8
Hafnium Flux Reduction Assemblies (HFRAs) 4
Primary Neutron Source Assemblies 10

Secondary Neutron Source Assemblies

01/15/2014 INMM XXIX Spent Fuel Mgt Seminar 35

FUEL LOAD PLANNING – Storage Capability ZIONSOLUTIONSLLC
An EnergySoluitons Company

NAC MAGNASTOR/MAGNATRAN ITEM Quantity
Transportable Storage Canisters (TSCs) 31

37 undamaged PWR F/As max 30
Transportable Storage Canisters-Damaged Fuel (TSCDFs)
4
Up to 4 damaged PWR fuel assemblies in DFCs + 65
33 undamaged PWR F/As 2257
65
Transportable Storage Canisters for GTTC Waste Quantity
36
Total # of TSCs 36

Total # of Storage Cells (61 x 37)

Vertical Concrete Casks (VCCs)

ISFSI PAD CAPACITY

North Pad (VCCs/TSCs)

South Pad (VCCs/TSCs)

01/15/2014 INMM XXIX Spent Fuel Mgt Seminar 36

FUEL LOAD PLANNING – Dev. Process Chart ZIONSOLUTIONSLLC
An EnergySoluitons Company

01/15/2014 CASKLOADER 37
(EPRI )

INMM XXIX Spent Fuel Mgt Seminar

FUEL LOAD PLAN – CASK REQUIREMENTS ZIONSOLUTIONSLLC
An EnergySoluitons Company

TSC/TSCDFs –Criticality/Shielding Cask Breakdown

Cask Cask Shielding Class
Criticality
Row
Class 1 2 2a 2b 3 3a Total

37-DFC-3.8 4 6 3 3 - 4 20
37-DFC-4.05
- - - - -11
36-DFC
37-Intact - - - - -55
36-Intact
35-Intact 5 9 - - 5 - 19
33b-Intact
Col Total - 8 - - 4 - 12

-2- - - 2

-1- -1-2

9 26 3 3 10 10 61

Number of F/As in each Criticality/Dose Group Pairing

Criticality Dose Group Row
Total
Group 1a 1b 2 3 4 DFCa DFCb
36
37Dn 0 0 0 15 21 - - 664
160
37D 32 20 176 48 388 - - 703
432
36D 0 0 0 60 100 - - 70
66
37I 40 40 184 80 359 - - 97

36I 0 0 128 64 240 - - 2228

35I 0 0 32 0 38 - -

33bI 0 0 16 16 34 - -

Damaged 0 12 24 12 0 12 37

Col Totals 72 72 560 295 1180 12 37

01/15/2014 INMM XXIX Spent Fuel Mgt Seminar 38

RV Internals / RV Segmentation Project ZIONSOLUTIONSLLC
An EnergySoluitons Company

• Contractor is Siempelkamp Nuclear Services
• Mechanical cutting of Reactor Vessel Internals (RVI)
• Oxy-propane cutting for Reactor Vessel

– Stade and Karlsruhe reactor experience in Germany
– Equipment fabricated and in transit

• Containment 2 RVI

– Upper internals complete
– Lower internals scheduled for February 2014

• Containment 1 RVI

– Commenced in January 2013
– 65% complete

• Parallel RVI operations

39

Reactor Vessel Internals Segmentation ZIONSOLUTIONSLLC
An EnergySoluitons Company

40

Volume Reduction Station ZIONSOLUTIONSLLC
An EnergySoluitons Company

41

Waste Operations ZIONSOLUTIONSLLC
An EnergySoluitons Company

• “Rip and Ship” defined

– Aggressive removal strategy, not reckless

• Minimize waste processing

– No decontamination or graded approach
– Risk reduction, cost effective methods, no rework

• Rail infrastructure operational
• Contract for Class B&C waste disposal
• Two shipments to WCS
• 45 railcars to Clive
• Water processing on line

42

LLW Rail Shipments ZIONSOLUTIONSLLC
An EnergySoluitons Company

43

Containment 1 D&D ZIONSOLUTIONSLLC
An EnergySoluitons Company
• RVI cavity preparations

– Control Rod Drive removal
– RV head cutting, packaging and removal
– Cavity sealing
– Cut and cap RV nozzles

• Large Components: Phase 1

– RC Loop Stop Isolation Valves
– RC Pumps and Motors
– RCS Piping (hot, cold, intermediate)
– Steam generator upper shell removal

44

RCP removal ZIONSOLUTIONSLLC
An EnergySoluitons Company

Lower internals

Auxiliary Building & Turbine Building ZIONSOLUTIONSLLC
An EnergySoluitons Company

• Completed asbestos abatement

– Abatement capacity through contractor embedded in crews

• D&D commenced in Auxiliary Building

– System modifications starting at 542 (lowest elevation)

• Selected system removal and elevation “ripout”

– 542 elevation (basement) 95% complete
– RHR

• MARSAME surveys in Turbine Building

– Focus on steam and condensate systems

• 34 kV Installation / 345kV disconnect

– Service water pump / motor replacement

46

MARSAME Characterization of Turbine Building ZIONSOLUTIONSLLC
An EnergySoluitons Company

47

Material Condition of Equipment ZIONSOLUTIONSLLC
An EnergySoluitons Company

• Hoisting Systems

– Fuel Building Overhead Crane (125T/15T Main/Aux Hook)
– Spent Fuel Pool Bridge Crane (2-1T Hoists)
– FHB Roof Hoist (1-T)
– Load cells

• Fuel Handling Tools

– Spent Fuel Handling Tools (2 )
– FA component handling tools (4-types – RCCA, BPRA/WABA, HFRA, TPD)

– Spent Fuel Pool & SFP Systems

– SFP material condition
– SFP Cooling and Purification
– Portable filtration/vacuum units (Tri-Nuc’s)
– Underwater lighting

• Performed PMs, Annual Inspections, refurbished tooling, SFP
housekeeping

01/15/2014 INMM XXIX Spent Fuel Mgt Seminar 48

Fuel Handling Programs & Procedures ZIONSOLUTIONSLLC
An EnergySoluitons Company

• Fuel handling procedures for SFP operations

– Based on old ZNPS and current Exelon PWR procedures

• Fuel handling training programs for SFP operations

– CFH/LCFH/FH positions
– Based on ZNPS , Exelon programs, and established D&D

precedence

• Revised site SNM procedures for movesheet generation
• Staffing

– Initially no qualified fuel handling personnel onsite
– Identify & qualify SNM movesheet generation personnel
– Identify & qualify fuel handling personnel contractor (W)

01/15/2014 INMM XXIX Spent Fuel Mgt Seminar 49

Fuel Assembly Handling Issues - I ZIONSOLUTIONSLLC
An EnergySoluitons Company

“Know thyself”
Diogenes, 3rd century

• Expended significant upfront effort to identify and understand all issues that can affect
the safe handling of ZNPS spent fuel

• Assembled design and historical information for 3-types of 15x15 Westinghouse fuel
used at ZNPS:
– 1122 Low parasitic –type F/As (LOPAR)
– 712 Optimized Fuel Assemblies (OFA)
– 392 Vantage5 Fuel Assemblies

• Determined significant fuel population (1454 F/As) susceptible to top nozzle separation
due to IGSCC (generic issue – see NRC IN 2002-09)

– All LOPAR and ~half of OFA assemblies affected

– Explored potential solutions – analytical, mechanical

– Chose Instrument Tube Tie Rod Repair option developed by W for 1451 F/As

– Chose Guide Tube Anchor (GTA) Repair for 2 F/As with non-standard upper nozzle
and for 1 F/A with a stuck neutron source assembly.

01/15/2014 INMM XXIX Spent Fuel Mgt Seminar 50