ML13028A101
| ML13028A101 | |
| Person / Time | |
|---|---|
| Site: | University of Michigan |
| Issue date: | 12/11/2012 |
| From: | Driscoll M University of Michigan |
| To: | Document Control Desk, NRC/FSME |
| References | |
| Download: ML13028A101 (7) | |
Text
O SEH University of Michigan
-OSEH Occupational Safety &
Occupational Safety & Environmental Health Campus Safety Services Building 1239 Kipke Drive, Ann Arbor, MI 48109-1010 SEnvirorinmental Health Phone: 734 647-1143
- Fax: 734 763-1185 December 11,2012 Document Control Desk U.S. Nuclear Regulatory Commission Two White Flint North 11545 Rockville Pike (Mail Code: 03H8)
Rockville, Maryland 20852-2738 RE: Ford Nuclear Reactor - Technical Specification Amendment Request Final Status Survey - Survey Design Package for FNR Foundation Cavity Docket 50-2 / License R-28 Licensing Branch:
The University of Michigan (U-M) is requesting an amendment to the Ford Nuclear Reactor (FNR) Decommissioning Plan that was submitted to the Commission in a correspondence dated January 10, 2006. In accordance with the NRC correspondence dated October 25, 2012, Final Status Survey (FSS) Plan details are needed for special situation survey units that include subsurface areas.
Enclosed is the survey design package for the FNR foundation cavity located beneath the FNR southwest freight door. The survey approach and evaluation methods were developed by Ameriphysics and approved by the University of Michigan decommissioning staff.
In addition to conducting beta and gamma scan surveys of all accessible surfaces and collecting static measurements and smears at each sample location, soil samples will be collected in the soil areas within the cavity for additional analyses. These soil samples will be shared with the NRC for confirmatory analyses.
Please do not hesitate to contact me at OSEH / Radiation Safety Service [(734) 647-2251]
should you have any questions or comments regarding the enclosed Final Status Survey design package for the foundation cavity beneath the southwest freight door.
Sincerely, Mark L. Driscoll Director/ Radiation Safety Officer Radiation Safety Service / OSEH
2 MLD/TGA/mld N RCFNRR-28AmendmentD&DCavitySurveyDesignPkgl 2-11-12 cc: Terry Alexander, Executive Director, OSEH Robert Blackburn, Manager, Laboratory Operations, MMPP Volker Sick, Associate Vice President, OVPR / Chair FNR.-DRC Theodore Smith, FNR Project Manager, NRC Headquarters (Mailstop T-8F5)
Jeremy Tapp, Health Physicist, NRC Region III FNR Decommissioning File
Ameriphysics LLC.
University of Michigan Ford Nuclear Reactor Bldg.
Final Status Survey Package Building: FNR j Survey Unit: Misc-2 Page of
Description:
PML/FNR Cavity Below Roll-Up Door- All Surfaces Classification: 0 Class 1 - Impacted E] Class 2 - Impacted [] Class 3 - Impacted Applicable Nuclides of Concern:
Nuclide Z 'co 0 10
' Ag 0 "OmAg 0 137 Cs Gross Beta DCGLw (dpm/100cm2) 5,125 Applicable Survey Unit Surfaces: % of Surface Requiring Scan Surveys Z Floors El 10% El 25% 0100%
0 Lower walls El 10% El 25% 0 100%
0 Upper Walls El 10% [1125% 0100%
0 Ceiling El 10% El 25% 0 100%
Required Survey Measurement Static Count Time Scan Rate Instrumentation Type Ludlum 2360143-93 or Beta 60 Seconds 2 equivalent _ eta 60_Seconds inches/sec.
Ludlum 2221/43-37 or Beta N/A 2 equivalent inchessec.
0 Ludlum 2221/44-10 or Gamma N/A 0.5 equivalent meters/sec.
[E An automated smear counter shall be used to analyze for Gross beta using Tc-99 efficiency Completed Package Reviewed By: Date:
Printed Name/Signature
Ameriphysics LLC.
University of Michigan Ford Nuclear Reactor Bldg.
Final Status Survey Package Building: FNR j Survey Unit: Misc-2 Page of
Description:
PML/FNR Cavity Below Roll-Up Door- All Surfaces Classification: [ Class 1 - Impacted [ Class 2 - impacted [] Class 3 - Impacted General Survey Instructions:
I1. The established number of static measurement locations needed for the statistical evaluation of this survey unit is 17.
- 2. For Class 1 and 2 survey units, the locations are determined by using a random start point and a systematic spacing from this point. For Class 3 survey units, these locations are selected by using randomly generated coordinates to determine sample locations. Due to these methods, the actual number of locations may vary. In this case, collect the actual locations provided on the survey map whether this number is greater than or less than 17.
- 3. Class I areas require a 100% beta and gamma scan surveys of all accessible surfaces. For Class 2 and 3 survey units, perform scan surveys of the required surface area at the prescribed scan rates. The areas scan surveyed should be chosen on surfaces with the highest potential to contain residual activity (e.g., potential spill locations, areas of high foot traffic, areas not normally cleaned during housekeeping activities, etc.). If there are no areas of high potential, perform scan surveys at the prescribed coverage on all applicable surfaces. All scan surveys shall be documented on the survey maps and data sheets. All scan survey locations should be shown so that."they are understandable to the reviewer.
- 4. Locate and mark the required static measurements locations using the provided survey map(s). Survey Maps have been provided with the required static measurement locations. Sufficient detail has been provided on these maps to measure and locate all of these locations.
- 5. Collect a static measurement and smear at each sample location. Document the results on the associated data results sheets. Additional static measurements may be taken in suspect areas at the discretion of the Project Manager or survey technician. However, these additional locations are not included in the analysis of the statistical sample set.
- 6. Notify the Ameriphysics Project Manager or designee if any static measurement or applicable removable contamination measurements exceeds the applicable investigation level.
Investigation Levels Survey Unit Flag Direct Flag Beta Scanning Flag Removable Classification Measurement or Measurement Result Measurement Result When:
Sample Result When:
When:
Class 1 > DCGL > DCGL > 500 dpmrlO00 cmz Class 2 > 75% DCGL > 75% DCGL > 500 dpmnl00 cm 2 Class 3 > 75% DCGL > 75% DCGL > 500 dpm/100 cm-
- 6. Ensure that all package information is completed and signed prior to turning in this Survey Package to the Project Manager or designee for review.
Special Survey Instructions:
Two Soil Samples will be collected in the soil areas in the cavity. A gamma scan survey will also be performed using a 2x2 Sodium Iodide detector using a scan rate of 0.25 meters/second or less.
FRON (FRI )DEO 7 2012, 15: 051ST. 15: 04.N. 7500000881 P G Ameriphysics LLC.
University of Michigan Ford Nuclear Reactor Bldg.
Final Status Survey Package Building: FNR Survey Unit: Misc-2 Page _ of
Description:
PMIJFNR Cavity Below Roll-Up Door- All Surfaces Classification: Z Class 1 - Impacted El Class 2 - Impacted El Class 3 - Impacted Location Code Description A unique location code shall be assigned to each individual survey location to ensure proper data management of the survey results. The following format shall be used to ensure consistency throughout the final status survey process:
BBB-RRRR-SS-M-LLL Where:
BBB = Building or area code. This field represents the facility area. This will be the building number or arA assigned area number. (3 characters)
RRRR = Survey unit ID code. Survey Unit ID. (3 to 4 characters)
Ss = Structural surface code. This field represents the structural surface such as floor, wall, ceiling, etc. and the surface division code. For example, if a room has a very large floor area it may be divided into two or more divisions and each section would be assigned unique codes such as F1, F2 and so on. Walls may be divided on a frequent basis. If only one surface area is identified for a particular survey area, then the default number will be"1". (e.g. WI, F1, etc.) (2 characters)
M = Structural material code. This field represents the type of structural material on which a particular measurement is taken. This field is usually used to for data sorting and analysis. The Project Manager will provide applicable codes. The default character shall be "M". (1 Character)
LLL = Numerical identification number. This field represents the survey point assigned numerical identifier. The field "001" means survey point location number 1. Numerical Identifiers shall not be duplicated within the same survey unit. (3-characters)
Prepared By: Date: /ý ý -71 /,-?
Printed Na me/.'nature
Ameriphysics LLC Random Sample Start Location and Sample Spacing Worksheet Building: FNR Survey Unit: Misc-2 Class: 1.
Survey Unit
Description:
PML Cavity Survey Unit Area: 49.00 m2 527.2 ft2 Floor Area: 15.00 m2 161.4 ft3 Number of Samples used for Calc: 17 X-axis dimension: 19.19 m 63.0 ft X Rand:1 0.45331129 Y-axis dimension: 8.63 m 28.3 ft Y Rand:1 0.68854209 2
X-Axis Start Location: 8.70 m 28.5 ft 2
Y-Axis Start Location: 5.94 m 19.5 ft Sampling Spacing: 1.82 m 5.99 ft JUse 1.5m Replacement Sample Locatiqns 3 __
Survey Random Number Generation* X-Coordinate Y-Coordinate Location X Coordinate Y Coordinate Location Location Note 1: Random Numbers between 0 and I were generated using the =RANDQ Function of MS Excel. The value of the calculation Is saved using the F9 Function rather than the formula to prevent recalculation during any document edtr.
Note 2: X-Axls and Y-Axis start locations were calculated by multiplying the appropriate dimension by the corresponding random number.
Note 3: Some randomly chosen survey locations do not fail on surface that can be surveyed. In this case, new simple random coordinates are generated to replace the original coordinates.
Calculations Performed By: Tim Pratt ,,
PrpAdd-ffimi X -;41- L---1 12/6/2012 Date SignatuI~/
Signiatui,p Date
r"WM %IKIPI )O5E 7 Z010 15: 0a5ST. 15 04No. 7500000881 P 5 Ford Nuclear Reactor Map Final Status Survey FNI vis.celaneous Survey -Unit Nuiso.- 2 Class: 1 FW~k/P:M Cavity (Mam Cavity and Fat Cavity) on 1st Floor Surface Area: 49 sq. m Sid=s of Cut-out V-6' (0.46m]
3 1/2' o.0gm] ---
V-1 1/2- [0.34m]
S-0 1/2" (0.92m]
2'-4" [0.71m] (4Cut-(Out: Not to Y-0 [0o.g2m] Scale)
V r 2-4 [0.71r n].
16 2'-0f [0.61m]
V-11 1/2' [0.60m]
10 1/2" (0.27m] -- k%
-- 15--1" [4.80m] - ,-ii 1/2-
, 0.6*]
Z[ (Central Cavity only- No south wal in East Cavity.
Wall Thic.*ness on Average.)
Random Start Location S Sample Locations Typical Spacing - 1.5 m SURVEY MAP BUILDING: FNR SURVEY UNIT NUMBER: Misc-2 PAGE OF CLASS: 1 SURVEY TYPE (CHECK ONE): El Characterization Survey 0 Final Status Survey COMMENTS:
SURVEY tLMPLETED BY: DATE COMPLETED:
PROJECT MANAGER REVIEW: DATE: