ML18038B399
| ML18038B399 | |
| Person / Time | |
|---|---|
| Site: | 07109185 |
| Issue date: | 02/06/2018 |
| From: | Pierre Saverot Spent Fuel Licensing Branch |
| To: | Hsia A Division of Spent Fuel Management |
| Saverot P | |
| Shared Package | |
| ML18038B397 | List: |
| References | |
| Download: ML18038B399 (17) | |
Text
Industrial Nuclear Company, Inc.
OP-100 Package Amendment Docket No. 71-9185 A Presentation to the US Nuclear Regulatory Commission January 30, 2018
Agenda Introduction Meeting Objectives OP-100 Package Payload Descriptions Free Drop Tests to Address RAIs Summary 2 > NRC Meeting, January 30, 2018
Meeting Objectives Present OP-100 Package Design Discuss OP-100 Payloads Currently authorized Additional payload to be added Modification of radioactive content Approach to Respond to NRC RAIs Obtain NRC Input for Planned RAI Responses Summary 3 > NRC Meeting, January 30, 2018
OP-100 Package 10-gal Carbon Steel Standard Drum Overpack
- Two Drum Versions 14.0 inch x 171/2 inch high, DOT/UN 1A2/X150/S (Steel IAW Obsoleted ASTM A366 Standard) 14.0 inch x 18.9 inch high, DOT/UN 1A2/X120/S (Steel IAW Current ASTM A1008/A1008M Standard)
Payload Support Structures
- 3/4-inch Thick Plywood Interlocking Panels & 2 x 4 Wood Insert Supports (Original)
- 4 lb/ft3 Polyurethane Foam Surround (Amendment) 4 > NRC Meeting, January 30, 2018
OP-100 Package (cont)
Two Support Structures: Foam (Left), Plywood (Right) 5 > NRC Meeting, January 30, 2018
OP-100 Package (cont)
View of IR-100 Installed in Support Structures 6 > NRC Meeting, January 30, 2018
Payload Descriptions Currently Authorized Payloads
- IR-100 Exposure Device
- IR-50 Source Changer Additional Payload
- IR-100ST Exposure Device
- Modified IR-100 Exposure Device Fitted w/ Tracking Device as Recommended by NNSA/GTRI Task Force Special Form Radioactive Material Limit
- Currently Authorized for 120 Ci Ir-192 or Se-75
- Increase to 145 Ci Ir-192 or Se-75
- Limited by 200 mrem/hr regulatory surface dose rate limit 7 > NRC Meeting, January 30, 2018
OP-100 Package IR-100ST Exposure Device Existing IR-100 Handle Removed Tracking Sensor Attaches to Body 8 > NRC Meeting, January 30, 2018
OP-100 Package Approach to Respond to NRC RAIs RAI 2-1, Material Properties
- Clarify Referenced ASTM Material Standards in SAR ASTM A366, which was obsoleted in August 2000, applies to older existing drums currently in use ASTM A1008, which replaced A366, applies to new drums ASTM A568, which is a standard for steel mill production and has no material properties, to be removed.
- Drum manufacturer selects material grade CRCQ carbon steel per ASTM A1008 that meets their self-certified DOT/UN rating, i.e., DOT/UN 1A2/X120/S
- Drum utilized for OP-100 package specified by DOT/UN rating only 9 > NRC Meeting, January 30, 2018
OP-100 Package Approach to Respond to NRC RAIs (cont)
RAI 2-2, Polyurethane Foam Support Structure Justification for Bounding Payload Damage
- Original free and puncture drop tests were not instrumented for impact forces
- No analytical basis can be performed to demonstrate foam structure is bounded by plywood structure
- Free drop tests to be performed with foam support structure
- Selected drop orientations based on impact damage from original free drops 10 > NRC Meeting, January 30, 2018
OP-100 Package Approach to Respond to NRC RAIs (cont)
CTU-2 (IR-100) Side Drop Damaged Lock Box 11 > NRC Meeting, January 30, 2018
OP-100 Package Approach to Respond to NRC RAIs (cont)
CTU-3 (IR-100) Side Drop Damaged Lock Box 12 > NRC Meeting, January 30, 2018
OP-100 Package Approach to Respond to NRC RAIs (cont)
CTU-4 (IR-50) CG-Over Corner Drop Damage 13 > NRC Meeting, January 30, 2018
OP-100 Package Approach to Respond to NRC RAIs (cont)
Conclusions from Original Free Drop Tests:
- Lock Box Damage May Occur When Minimum Clearance Exists Between Device and Drum Wall
- Maximum Deformation to Support Structure & Drum Occurs for Top Down, CG-Over-Corner Orientation Polyurethane Foam Support Structure
- Minimum Clearance is 2.7 Inches with IR-50 Device
- Selected Orientations for Free Drops Bottom Down w/ IR-50 Source Changer Top Down, CG-Over-Corner w/ IR-50 Source Changer
- Single CTU to be tested at ~100 °F (NCT Hot Condition) to Maximize Deformation 14 > NRC Meeting, January 30, 2018
OP-100 Package Approach to Respond to NRC RAIs (cont)
Bottom Down Free Drop 15 > NRC Meeting, January 30, 2018
OP-100 Package Approach to Respond to NRC RAIs (cont)
Top Down, CG-Over Corner Free Drop 16 > NRC Meeting, January 30, 2018
OP-100 Package Summary 17 > NRC Meeting, January 30, 2018