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| number = ML17065A063
| number = ML17065A063
| issue date = 01/30/2017
| issue date = 01/30/2017
| title = Rancho Seco Nuclear Generating Station - Final Status Survey Summary Report, January 30, 2017, Iosb Main Sump, Survey Unit F8300103
| title = Final Status Survey Summary Report, January 30, 2017, Iosb Main Sump, Survey Unit F8300103
| author name =  
| author name =  
| author affiliation = Sacramento Municipal Utility District (SMUD)
| author affiliation = Sacramento Municipal Utility District (SMUD)
Line 17: Line 17:


=Text=
=Text=
{{#Wiki_filter:Approved By: Rancho Seco Final Status Survey Summary Report January 30, 2017 IOSB Main Sump Survey Unit F8300103 FSS Engineer Lead FSS Engineer /It>, '!!.fa-.-Date: ;t *Manager, :nc:o Seco Assets FINAL STATUS SURVEY F8300i03 Survey Unit: F8300103, Interim Onsite Storage Building (IOSB) Main Sump Survey Unit
{{#Wiki_filter:Rancho Seco Final Status Survey Summary Report January 30, 2017 IOSB Main Sump Survey Unit F8300103 FSS Engineer Lead FSS Engineer Approved By:    /It>,
              *Manager,
                          ':nc:o
                            !!.fa-.-       Date:
Seco Assets
                                                ..:z/,:i.y~ ;t
 
FINAL STATUS SURVEY F8300i03 Survey Unit:
F8300103, Interim Onsite Storage Building (IOSB) Main Sump Survey Unit


== Description:==
== Description:==
Operating History: Designed primarily to store packaged radioactive waste containers safely, protected from the elements, and maintain radiological dose as low as reasonably achievable (ALARA), each storage cell possibly stored media of many types, including filters, resins, contaminated chemicals, DAW, activated reactor components, contaminated . plant components and other contaminated items. Site Characterization: Static measurements were made of the interior surfaces of the sump,. to confirm the absence or presence of plant-derived radionuclides. Static measurements showed a mean gross activity level of 2,40 I dpm/l 00 cm2 and a maximum value of 3,056 dpm/l 00 cm2* The statistics of the sump results combines walls, floor, and ceiling data. Based on the levels of gross activity reported, the area was determined to be a Class 3 area. Survey Unit Design Information: The Survey Unit Design Parameters are presented in Table 1 below. The survey unit and measurement locations are depicted on the maps in Attachment 1. Static measurement locations were randomly determined and approximately 14% of the area scanned by beta scanning. The instrumentation used for the survey along with the MDC values are listed in Table 2-1 Attachment 2. FSS Outside Area Class 3 F8300143 FINAL STATUS SURVEY F8300103 Table 1, Survey Unit Design Parameters Survey Package: F830 Sumps Survey Unit: 10 Class 03 SU Area (m2)
* 80 Evaluator: JR DCGLw: 43,000 Gross Activity DCGL Area Factor NA Class 3 Design DCGLemc (dpm/1 OOcm2): NA Class 3 DCGLemc: NA Class 3 LBGR: 21,500 Default= 50% DCGL Sigma: 466 Scoping Survey Data for Truck Bay Tvoe I error: 0.05 Type II error: 0.05 Predominant Nuclide Cs-137 Sample Area (m2) N/A Total Instrument Efficiency: 0.132 Total Area Scanned (m2): 11.1 Scan Coveraqe (%) Class 3 Choosing 'N/A' sets material Material Type: N/A background to "O" ,_ : <L *. . :*; *:: .,:' :.* ;;: * '> ** ",>*: :; Z1-a: . 1.6.45 Z1-B: 1.645 Sign p: 0.99865 Calculated Relative Shift: 46.:1 Relative Shift Used: .3.o Uses 3.0 if Relative Shift >3 N-Value: .1.1 N-Value+20%: 14 Survey Results: A total of 30 direct measurements were made in F8300 I 03 with 15 each being collected in the upper and lower sumps. The results of the static measurements are shown in Table 2. All of the static measurements were less than the DCGL. None of the scan measurements indicated areas of elevated activity. Swipe data did not indicate elevated activity levels above the MDA. 2 FSS Main Sump F8300103 FINAL STATUS SURVEY F8300103 Table 2, Static Measurement Results Number #* Beta (cpm) 1 F8300103X00001 307 2,326 2 F8300103X00002 302 2,288 3 F8300103X00003 312 2,364 4 F8300103X00004 206 1,561 5 F8300103X00005 234 1,773 6 F8300103X00006 244 1,848 7 F8300103X00007 260 1,970 8 F8300103X00008 215 1,629 9 F8300103X00009 243 1,841 10 F8300103X00010 209 1,583 11 F8300103X00011 248 1,879 12 F8300103X00012 220 1,667 13 F8300103X00013 288 2,182 14 F8300103X00014 294 2,227 15 F8300103X00015 234 1,773 16 F8300103X00016 249 1,886 17 F8300103X00017 258 1,955 18 F8300103X00018 255 1,932 19 F8300103X00019 296 2,242 20 F8300103X00020 208 1,576 21 F8300103X00021 229 1,735 22 F8300103X00022 215 1,629 23 F8300103X00023 242 1,833 24 F8300103X00024 208 1,576 25 F8300103X00025 247 1,871 26 F8300103X00026 258 1,955 27 F8300103X00027 228 1,727 28 F8300103X00028 223 1,689 29 F8300103X00029 252 1,909 30 F8300103X00030 305 2,311 3 FSS Main Sump F8300103 FINAL STATUS SURVEY F8300103 Table 3 contains the statistical summary of the static measurement data for the Outside Area Class 3. Table 3, Beta Summary Statistics Mean Median Beta Static Sumps Standard Deviation Minimum Maximum Count Survey Unit Data Assessment: 1,891 1,860 249 1,561 2,364 30 The survey design required 14 static measurements for the Sign Test. A total of 30 static* measurements were collected. The critical value and the results of the Sign Test are presented in Table 4. The sample mean and median values were less than the DCGL. The sample standard deviation was greater than the design standard deviation but both values of sigma resulted in a relative shift greater than three (3), no additional samples were required. Table 4, Data Assessment Results " . * ' , : .:*-$t-atic:. .:_:.* .:< .. ***:***;:> . .. _., .. * ... *' ... .. ..... -....... '* .... r, ** lNumber of Samples: 30 Median: 1,860 Mean: 1,891 Static Data Standard Deviation: 249 Maximum: 2,364 -* __ sign rest Resuits. * * * * ; . ':. :; ?: .. Comments* *. *. Adjusted N Value: 14 S+ Value: 30 Critical Value: 10 .. . ... .. Comment$* : Sufficient samples collected: Pass Maximum value <DCGLw: Pas$ Median value <DCGLw: Pass Mean value <DCGLw: Pass Maximum value <DCGLemc: NA SiQn test results: Pass ***.* Fir:iaf Status '.*'. *{ Comments* '* The survey unit passes all conditions: Pass Survey Unit Investigations and Results: No investigations were required for either direct or scan measurements and no investigation results are reported. 4 FSS Main Sump F8300103 ... 
:FINAL STATUS SURVEY F8300103 ALARA Statement: As stated in Chapter 4 of the LTP, as ,long as the residual activity within the survey unit is less than the DCGL, the ALARA criterion has been met. Changes in Initial Survey Unit Assumptions: The survey unit was designed as a Class 3 survey and the sample results are consistent with that classification. No individual measurement exceeded the DCGL. No potential areas of elevated activity were detected. *


== Conclusion:==
Operating History: Designed primarily to store packaged radioactive waste containers safely, protected from the elements, and maintain radiological dose as low as reasonably achievable (ALARA), each storage cell possibly stored media of many types, including filters, resins, contaminated chemicals, DAW, activated reactor components, contaminated
The FSS of this survey unit was properly designed as a Class 3 survey based on the results of the investigation survey. The required number of direct measurements was made and the scan coverage met the requirement of Table 5-6 of the LTP. All of the static measurements were less than the DCGL. No investigations were required. The static measurement data support rejection of the null hypothesis, providing high confidence that the survey unit satisfied the release criteria and that the data quality objectives were met. It is concluded that survey unit F83001043 meets the release criteria of JOCFR20.1402. 5 FSS Main Sump F8300103   'Maps January 30, 2017 Survey Unit F8300103 F830010;3X00003 13 *=2,364 dpm/100-crri' $ . ... r'-\ ... -: ) r-,..1 $ F8300103Xo0002 j3 =2,288 dpm/100 Cm': SMUD liA TIDEWATER rnc UCllll nts I s.t!CllllllS I Ml'XLlU ** uu.trlt". SUMP* MAJN CEILING WALLS FLOOR SMUD Appro*..ed by. ouno11 Appro'IOI date: ReY No.: Page I $ F8300103X00010 13 =1,583 dpm/100 cm2 .. .,, .. . *.,) \ \.. i , ..... (**1 *,.:1 I :i\ F8300103XOO 11 13 =1,879 dp 00 cm* -* F.8300103X00008 $13 =1,629 dpm/100 cm' F8300103X00006 $13 =1,848 dpm/100 crn2 F8300103X00013 $13 =2,182 dl?[.lli100 cm" Att. 1 Maps F8300103X00014 13 =2,227 dpm/100 cm" $ F8300103X00004 13 =1,561 dpm/100 cm., $ '**** $F8300103X00012 *
. plant components and other contaminated items.
* 13 =1,667 dpm/100 cm' (/) .;t; ,' & F8300103XOOO 7 w 13 =1,970 dpm/1 O cm2 $ F83001 03X00015 13 =1,773 dpm/100 cm' F8300103X00005 $13 =1,773 dpm/100 c F8300103X00009 =1,841 dpm/100 cm' 1 F8300103
Site Characterization: Static measurements were made of the interior surfaces of the sump,.
* F8300103X00016 $ 13 =1,886 dpmhoo cm' F8300103X00018 $ 13 =1,932 dpm/100 cm2 SMUD (ii TIDEWATER IPIC rwom:ns tstt!1u1S1S' 'l!osJUu u.tu.n&#xa3;as SUMP-UPPER SMUD Appro*od by. Drawing No.:
to confirm the absence or presence of plant-derived radionuclides. Static measurements showed a mean gross activity level of 2,40 I dpm/l 00 cm 2 and a maximum value of 3,056 dpm/l 00 cm 2
* The statistics of the sump results combines walls, floor, and ceiling data.
Based on the levels of gross activity reported, the area was determined to be a Class 3 area.
Survey Unit Design Information:
The Survey Unit Design Parameters are presented in Table 1 below. The survey unit and measurement locations are depicted on the maps in Attachment 1. Static measurement locations were randomly determined and approximately 14% of the area scanned by beta scanning. The instrumentation used for the survey along with the MDC values are listed in Table 2-1 Attachment 2.
FSS Outside Area Class 3                      F8300143
 
FINAL STATUS SURVEY F8300103 Table 1, Survey Unit Design Parameters Survey Package:                F830              Sumps Survey Unit:                  10 Class                03 SU Area (m 2 )
* 80 Evaluator:                  JR DCGLw:          43,000              Gross Activity DCGL Area Factor                  NA            Class 3 Design DCGLemc (dpm/1 OOcm 2 ):                          NA            Class 3 DCGLemc:                  NA            Class 3 LBGR:        21,500              Default= 50% DCGL Sigma:              466            Scoping Survey Data for Truck Bay Tvoe I error:            0.05 Type II error:            0.05 Predominant Nuclide              Cs-137 Sample Area (m 2 )                N/A Total Instrument Efficiency:                0.132 Total Area Scanned (m 2):                  11.1 Scan Coveraqe (%) ;{~{<~:lio/l:' Class 3 Choosing 'N/A' sets material Material Type:                N/A            background to "O"
    ,_ :<L ~.;};,_ ::~;;:oa:ic.Ui~~esf\i~f!J'~&#xa5;~t;:;ff;~i).: .-'.\~.,,;:;;f; *. ~;_\ :~::*: . :*; *:: .,:' cO:Oi'ih~ilis: :.* ;;: *'> * ",>*: :; **~
Z1-a:      . 1.6.45 Z1-B:        1.645 Sign p:      0.99865 Calculated Relative Shift:                46.:1 Relative Shift Used:                  .3.o          Uses 3.0 if Relative Shift >3 N-Value:                .1.1 N-Value+20%:                      14 Survey Results:
A total of 30 direct measurements were made in F8300 I 03 with 15 each being collected in the upper and lower sumps. The results of the static measurements are shown in Table 2.
All of the static measurements were less than the DCGL. None of the scan measurements indicated areas of elevated activity. Swipe data did not indicate elevated activity levels above the MDA.
2                                            FSS Main Sump                                                F8300103
 
FINAL STATUS SURVEY F8300103 Table 2, Static Measurement Results Number        S~inple #*          Beta (cpm)      ~eta.(dpmf 1  F8300103X00001                307              2,326 2  F8300103X00002                302              2,288 3  F8300103X00003                312              2,364 4  F8300103X00004                206              1,561 5 F8300103X00005                234              1,773 6 F8300103X00006                244              1,848 7 F8300103X00007                260              1,970 8 F8300103X00008                215              1,629 9 F8300103X00009                243              1,841 10  F8300103X00010                209              1,583 11  F8300103X00011                248              1,879 12  F8300103X00012                220              1,667 13  F8300103X00013                288              2,182 14  F8300103X00014                294              2,227 15  F8300103X00015                234              1,773 16  F8300103X00016                249              1,886 17  F8300103X00017                258              1,955 18  F8300103X00018                255              1,932 19  F8300103X00019                296              2,242 20  F8300103X00020                208              1,576 21  F8300103X00021                229              1,735 22  F8300103X00022                215              1,629 23  F8300103X00023                242              1,833 24  F8300103X00024                208              1,576 25  F8300103X00025                247              1,871 26  F8300103X00026                258              1,955 27  F8300103X00027                228              1,727 28  F8300103X00028                223              1,689 29  F8300103X00029                252              1,909 30  F8300103X00030                305              2,311 3                        FSS Main Sump            F8300103
 
FINAL STATUS SURVEY F8300103 Table 3 contains the statistical summary of the static measurement data for the Outside Area Class 3.
Table 3, Beta Summary Statistics Beta Static Sumps Mean                                                          1,891 Median                                                        1,860 Standard Deviation                                                249 Minimum                                                      1,561 Maximum                                                      2,364 Count                                                              30 Survey Unit Data Assessment:
The survey design required 14 static measurements for the Sign Test. A total of 30 static*
measurements were collected. The critical value and the results of the Sign Test are presented in Table 4. The sample mean and median values were less than the DCGL. The sample standard deviation was greater than the design standard deviation but both values of sigma resulted in a relative shift greater than three (3), no additional samples were required.
Table 4, Data Assessment                    .. _., ..
Results
                  '~
                      , : .:*-$t-atic:. o.a~a'V~1u~~'::  .:_:.* .:< ....... ***:***;:>.
                                                                                -.......      '*  .... r, **
* Gomrn~nts:::; ...
lNumber of Samples:                        30 Median:          1,860 Mean:          1,891 Static Data Standard Deviation:                              249 Maximum:            2,364
                      - *__ sign rest Resuits. *** * ; .          ':.
                                                                      *.    :; ?: ..                              Comments*        *.
Adjusted N Value:                      14 S+ Value:                    30 Critical Value:                  10 Cri.t~ria S~tisfac:ti'ci.n .        :
Comment$*
Sufficient samples collected:                    Pass Maximum value <DCGLw:                        Pas$
Median value <DCGLw:                    Pass Mean value <DCGLw:                  Pass Maximum value <DCGLemc:                                NA SiQn test results:            Pass
                                                                                  '.*'. *{
                              ***.* Fir:iaf Status                            '*                                  Comments*
The survey unit passes all conditions:                            Pass Survey Unit Investigations and Results:
No investigations were required for either direct or scan measurements and no investigation results are reported.
4                                                    FSS Main Sump                                                  F8300103
 
:FINAL STATUS SURVEY F8300103 ALARA Statement:
As stated in Chapter 4 of the LTP, as ,long as the residual activity within the survey unit is less than the DCGL, the ALARA criterion has been met.
Changes in Initial Survey Unit Assumptions:
The survey unit was designed as a Class 3 survey and the sample results are consistent with that classification. No individual measurement exceeded the DCGL. No potential areas of elevated activity were detected.                          *
 
==
Conclusion:==
 
The FSS of this survey unit was properly designed as a Class 3 survey based on the results of the investigation survey. The required number of direct measurements was made and the scan coverage met the requirement of Table 5-6 of the LTP. All of the static measurements were less than the DCGL. No investigations were required.
The static measurement data support rejection of the null hypothesis, providing high confidence that the survey unit satisfied the release criteria and that the data quality objectives were met.
It is concluded that survey unit F83001043 meets the release criteria of JOCFR20.1402.
5                                 FSS Main Sump                   F8300103
 
Attachment 1
        'Maps January 30, 2017 Survey Unit F8300103
 
                                                                                                                                                        $ F8300103X00010 13 =1,583 dpm/100 cm2
                                                                                                                                              ...,, ..        i , .....  (**1    ~ F8300103XOO 11
                                                                                                                                          . *.,) \ \..      *,.:1 I  :i\
13 =1,879 dp  00 cm*
                                                                                                                  -* F.8300103X00008
                                                                                                                  $13 =1,629 dpm/100 cm' F8300103X00006
                                                                                                                              $13 =1,848 dpm/100 crn2 F8300103X00013
                                                                                                                      $13 =2,182 dl?[.lli100 cm"
                                                                                                                                                                                                      '****  $F8300103X00012          **
13 =1,667 dpm/100 cm'
(/)
F830010;3X00003 13 *=2,364 dpm/100- crri'
                                                                                  $                                                                             F8300103X00014
                                                                                                . \~...
13 =2,227 dpm/100 cm" r'- \                                                                       $
                                                                                                                                                                                                      .;t;              &  F8300103XOOO 7
                                                                                                  -: )                                                                                                 ;~
r-w 13 =1,970 dpm/1 O cm2
                                                                                                ~.    ,..1
                                                                                                                                                                                                        $ F83001 03X00015 13 =1,773 dpm/100 cm'
                                        $      F8300103Xo0002 j3 =2,288 dpm/100 Cm':                                                                                                                                                 F8300103X00005
                                                                                                                                                                                                                    $13 =1,773 dpm/100 c F8300103X00009
                                                                                                                                                                                                          =1,841 dpm/100 cm' SMUD         liA TIDEWATER                             rnc UCllll nts I s.t!CllllllS I Ml'XLlU **uu.trlt".
F8300103X00004 13 =1,561  dpm/100 cm.,
SUMP* MAJN CEILING WALLS FLOOR                                                                                                                                                 $
SMUD Appro*..ed by.
Appro'IOI date:
ouno11 ReY No.:
1 Page I                           Att. 1 Maps                                                                                                                      F8300103
 
                                                                                                                                .F8300103X00027 13 $,727 dpm/100 cm2         ~~_'.;(i\)\:l .t U ;J\:*,:_:'.,-
                                                                                                                                                  $  F8300103X00025                F8300103X00028$
13 =1,871 dpm/100 cm2          13 =1,689 dpm/100 cm2 F8300103X00020 $                                         F8300103X00030              F8300103X00029 13 =1,576 dpm/100 cm 2
* 13 =2,311 dpm/100 crri2    -~ =1,909 dpm/100 cm'
* F8300103X00016                    $           F8300103X00017            F8300103X00022 13 =1,886 dpmhoo cm' 13 =o1,955 dpm/100 cm2   13 =1,629 dpm/100 cm' F8300103X00018 $
13 =1,932 dpm/100 cm2 F8300103X00021                                                                                      $E8300103~00026 .
13 =1,735 dpm/100 cm'                                                                                 13 =1,955 dpm/1 DO cm2 F8300103X00019 13 =2,242 dpm/100 cm' F8300103X00023 $
13 =1,833 dpm/100 cm' SMUD (ii TIDEWATER                                 IPIC rwom:ns tstt!1u1S1S' 'l!osJUu u.tu.n&#xa3;as                                                                     F8300103X00024 SUMP-UPPER                                                                                                   13 =1,576 dpm/100 cm' SMUD Appro*od by.
Drawing No.:


== Description:==
==
Drown 8. Oc'd: Approval dote: Date: Rev No.: F8300103X00020 $ 13 =1,576 dpm/100 cm2
Description:==
* F8300103X00017 13 =o1,955 dpm/100 cm2 $ F8300103X00019 13 =2,242 dpm/100 cm' $ Page 2 F8300103X00022 13 =1,629 dpm/100 cm' $, $ F8300103X00021 13 =1,735 dpm/100 cm' .F8300103X00027 13 $,727 dpm/100 cm2 .t U ;J\:*,:_:'.,-$ F8300103X00025 13 =1,871 dpm/100 cm2 F8300103X00028$ 13 =1,689 dpm/100 cm2 F8300103X00030 F8300103X00029 13 =2,311 dpm/100 crri2 =1,909 dpm/100 cm' F8300103X00024 13 =1,576 dpm/100 cm' F8300103X00023 $ 13 =1,833 dpm/100 cm' Att. 1 Maps . 13 =1,955 dpm/1 DO cm2 F8300103 r-*"1 **** j . '-'**'; 0 .f ..... .,.\ ,*ll'* ..... ""'::;:: F8300103X00001 $ J.3 =2,326 dphl/100 cm> SMUD Wl TIDEWATER INC fll'Cl.-tOIS I Ql{lfflUt. 1 MAllAUllS SUMP SMUD Approved by. A provol dote: Rev No.: Page 3 Art. I Maps F8300103   Instrumentation December 12, 2016 Survey Unit F8300103 Table 2-1. Survey Unit Instrumentation :Meastjrement . Actl.yity* Detectptc '*-,:. ; Typ'e Effidendes * :. .. ' '. *.*-,* Beta Static Ludlum Model Beta -44 7 dpm/100 cm2 13.2% 317897/331972 Measurement 2350-1 2/10/17 Ludlum Model 44-116 B Detector Beta Static Ludlum Model Beta -504 dpm/J 00 cm2 13.2% 317897/331972 Measurement 2350-1 2/10/17 Ludlum Model 44-116 B Detector Swipe Ludlum Model 2929 Beta -74 dpm/100 cm2 42.8% 166716/170380 Measurements Ludlum Model 44-11/3/16 10-1 Swipe Ludlum Model 2929 Beta -79 dpm/ I 00 cm2 42.8% 166716/170380 Measurements Ludlum Model 44-I 1/3/16 I 0-1
 
* Minimum detectable activities for the count rate instrumentation were calculated in accordance with NUREG-1507, "Minimum Detectable Concentrations with Typical Radiation Survey Instruments for Various Contaminants and.Field Conditions" (U.S. NRC, 1997). b Detectors are required to be calibrated once every 12 months. Calibration due date indicates the date by which the detector must be calibrated again. cm2 = square centimeters cpm = counts per minute dpm =disintegrations per minute Pagel Att. 2 Instrumentation F8300103 Static Measurement MDA Beta Survey Type PR331972 Detector Number 187 Background count rate ( cpm) 1 Count Time (min) 0.132 Efficiency 100 Area of Detector ( cm2) Constants 60 sec/min 2.54 cm/in Assumptions Background count time and sample count time are equivalent Calculate Static MDA Static MDA =3 + 4.65(Br
Drown 8.
* t)0*5/t
Oc'd:
Approval dote:
Date:
Rev No.:
Page 2                                                 Att. 1 Maps                                                                                             F8300103
 
r-*"1
                                                                                              **** i-****1n,~
j   . '- '**';
0
                                                                                                                          ..... .f
                                                                                                                                .,.\
                                                                    ,*ll'* .....                                           **:~**-'
c.~)
                                                                      <r~
F8300103X00001
                                                                                $ J.3 =2,326 dphl/100 cm>
SMUD Wl TIDEWATER                             INC fll'Cl.-tOIS I Ql{lfflUt. 1 f'll~lll MAllAUllS SUMP SMUD Approved by.
A provol dote:
Rev No.:
Page 3                                           Art. I Maps           F8300103
 
Attachment 2 Instrumentation December 12, 2016 Survey Unit F8300103
 
Table 2-1. Survey Unit Instrumentation
:Meastjrement                                     ~inimuniUetectab\e Actl.yity*             Detectptc           Cailbt;~tipn
                        . Instn1mentT)',~e.                                                                  * :. D~e..':t>.~teb
'*- ,:. ; Typ'e                                                                             Effidendes               '     . *.*-,*
Beta Static         Ludlum Model             Beta - 44 7 dpm/100 cm 2                  13.2%         317897/331972 Measurement                 2350-1                                                                               2/10/17 Ludlum Model 44-116 B Detector Beta Static         Ludlum Model             Beta - 504 dpm/J 00 cm 2                  13.2%         317897/331972 Measurement                 2350-1                                                                               2/10/17 Ludlum Model 44-116 B Detector Swipe         Ludlum Model 2929             Beta - 74 dpm/100 cm2                   42.8%         166716/170380 Measurements           Ludlum Model 44-                                                                           11/3/16 10-1 Swipe           Ludlum Model 2929             Beta - 79 dpm/ I 00 cm 2                42.8%         166716/170380 Measurements           Ludlum Model 44-                                                                           I 1/3/16 I 0-1
* Minimum detectable activities for the count rate instrumentation were calculated in accordance with NUREG-1507, "Minimum Detectable Concentrations with Typical Radiation Survey Instruments for Various Contaminants and.Field Conditions" (U.S. NRC, 1997).
b Detectors are required to be calibrated once every 12 months. Calibration due date indicates the date by which the detector must be calibrated again.
cm 2 = square centimeters cpm = counts per minute dpm =disintegrations per minute Pagel                                         Att. 2 Instrumentation                                       F8300103
 
Static Measurement MDA Beta Survey Type PR331972   Detector Number 187 Background count rate (cpm) 1 Count Time (min) 0.132 Efficiency 100 Area of Detector (cm 2)
Constants 60 sec/min 2.54 cm/in Assumptions Background count time and sample count time are equivalent Calculate Static MDA Static MDA =3 + 4.65(Br
* t) 0*5/t
* E
* E
* A/100 (NUREG 1507) Where: Br Background Countrate t Count Time (min) E Efficiency *A Area of detector (cm2) Static MDA 504 dpm/100 cm2 Page 2 Att. 2 Instrumentation F8300103 Beta Survey Type PR331972 Detector Number 145 Background count rate (cpm) 1 Count Time (min) 0.132 Efficiency 100 Area of Detector (cm2) Constants 60 sec/min 2.54 cm/in Assumptions Background count time and sample count time are equivalent Calculate Static MDA Static MDA =3 + 4.65(Br
* A/100     (NUREG 1507)
* t)&deg;-5/t
Where:               Br   Background Countrate t   Count Time (min)
E   Efficiency
                                  *A   Area of detector (cm 2)
Static MDA                         504 dpm/100 cm 2 Page 2                                 Att. 2 Instrumentation   F8300103
 
Beta Survey Type PR331972   Detector Number 145 Background count rate (cpm) 1 Count Time (min) 0.132 Efficiency 100 Area of Detector (cm 2)
Constants 60 sec/min 2.54 cm/in Assumptions Background count time and sample count time are equivalent Calculate Static MDA Static MDA =3 + 4.65(Br
* t)&deg;- 5/t
* E
* E
* A/100 (NUREG 1507) Where: Br Background Countrate t Count Time (min) E Efficiency A Area of detector (cm2) Static MDA 447 dpm/100 cm2. Page 3 Att. 2 Instrumentation F8300103 Att. 3 Investigation Attachment 3 Investigation January 30, 2017 Survey Unit F8300103 (none required) F8300103   Data Assessment February 2, 2017 Survey Unit F8300103 Histogram for Beta Static Activity (dpm/100 cm2) Sumps // 7 6 6 // 5 5 &#xa3;1iii.f:i'&#xa3;0:t.i!t/ ! u. 2 1 1 II 0 Ill 1606 1686 1767 1847 1927 2008 2088 2168 Page I Att. 4 Data Assessment 2248 ' 1Activily 2329 F8300103 Number of Values Minimum Mai-:imum SD Skewness Kurtosis BMean BMedian 0 Normal Di;tribulion 0Less Bins OMoreBins 301 1.560.61 2,363.64! 249.26 0.56 *0.781 1,891.161 1.859.85[
* A/100     (NUREG 1507)
2200 1800 1600 * * * -1.8 Page 2 Q-Q Plot for Beta Static Activity (dpm/100 cm2) Sumps * *
Where:               Br   Background Countrate t   Count Time (min)
* 0 *1.2 0
E   Efficiency A   Area of detector (cm 2)
* 0 * * * * * * * * * * * -0.6 0.0 0.6
Static MDA                         447 dpm/100 cm 2 .
* Theoretical Quantiles (Standard Normal) Att. 4 Data Assessment * * * .. 1.2
Page 3                                   Att. 2 Instrumentation     F8300103
* 1.8 F8300103 N = 30 Mean= 1891 Sd
 
* 249.3 Slope
Attachment 3 Investigation January 30, 2017 Survey Unit F8300103 (none required)
Att. 3 Investigation                      F8300103
 
Attachment 4 Data Assessment February 2, 2017 Survey Unit F8300103
 
Histogram for Beta Static Activity (dpm/100 cm2) Sumps               1Activily 7                                                                                                    Number of Values 301
                                          /----~-                                                      Minimum                1.560.61
                                //
Mai-:imum              2,363.64!
SD                        249.26 6       6 Skewness                    0.56 Kurtosis                    *0.78 1 BMean                    1,891.161
                        //                   5       5                                               BMedian                  1.859.85[
0  Normal Di; tribulion 0Less Bins
    &#xa3;1iii.f:i'&#xa3;0:t.i!t/                                                                               OMoreBins u.
2 1                 1 1606         1686       1767   1847     1927 II  2008 0
2088 Ill 2168 2248 2329 Page I                       Att. 4 Data Assessment           F8300103
 
Activ~
Q-Q Plot for Beta Static Activity (dpm/100 cm2) Sumps N = 30 Mean= 1891 Sd
* 249.3
* Slope
* 246.8 lnteicept
* 246.8 lnteicept
* 1891 Correlation, R
* 1891
* 0.963 Ell BeS! Line Smear _Data _calculation_Sheet_101316 I IOSB Final Status Survey I LCl LC1 LC3 LC4 LC6 LC5 flCPM fldpm O<>te/Time of Count Sample 1 F830 020 3 c 00001 SM tower Sump 47 .7 10/21/16 0930 2 F830 010 3 c 00002 SM Lower Sump 41 *21 10/21/16 0932 3 F830 010 3 c 00003 SM Lower Sump 44 -14 10/21/16 0935 '1 f!!30 010 3 c 00004 SM Lower Sump 42 -18 10/21/16 0937 5 F830 010 3 c 00005 SM Lower Sump 56 14 10/21/16 0938 6 F830 010 3 c 00006 SM lower Sump 58 19 10/21/16 09'10 7 F830 010 ) c 00007 SM Lower Sump 48 -'1 10/21/16 0941 s F830 010 3 c 00008 SM Lower Sump 38 -27 10/21/16 0943 9 F830 0.10 3 c 00009 SM Lower Sump 40 -23 10/21/16 09'15 10 F830 010 3 c 00010 SM Lower Sump 46 .9 10/21/16 0947 l.l F830 010 3 c 0001.l SM Lower Sump so 0 10/21/16 0948 .12 F830 010 3 c OOOLZ SM Lower Sump 56 14 10/21/16 0950 13 F830 010 3 c 00013 SM Lowe' Sump 48 -4 10/21/16 0951 M H;JO ow 3 c 00014 SM Lower Sump 53 7 10/21/16 0953 15 F830 010 3 c 00015 SM Lower Sump 53 7 10/21/16 0944 Comments R\* *.1(t1,n1Ufl' '-":*low, lhl* lf'<1ui11"1(J *;ou1i:1* .ind b.lCk{!1ound c1wcl=*. *.:n1':.l:1r:.to1ily prior la oJ io:;.:tUm(.>nl !.v*low. Ludlum 2929 Bc'"chtop r.ll1crl'OCV bkp, (flUlll 2929 S/N: 182597 r.)te t;lll*.' MOA 3 ., " CL n ... ..-. ........ 43-10-15/N:188736 rnin 11..2.. l;pm dpmpN;uc.1 Tech A Sign/ Date 1z.-i-1r. 13 4Y.<J I. 78.7 Cal Due Date: 5/13/2017 0.434 Tech r. Sign/ Date r-:. j ,l cpm min r:pmp.""r Page 3 Att. 4 Data Assessment F8300103 Copy or Smear_Dala_Calculation_Shcetl2517jr.xlsx IOSB Final Status Survey I.Cl. l.C2 LC3 LC4 LC6 LCS flCPM f.ldpm Date/Time of Count Sample Comments 16 F!l30 010 J c 0001i; SM Sumps 43 -1 12/05/ 16 1045 17 FisJO 010 3 ( C00l7 SM Sumps 41 -G 12/05/16 1046 18 F830 010 3 c 00018 SM 45 4 12/05/16 1047 l9 FBJO 010 3 ( 00019 SM Sumps 31 -29 12/05/16 1049 20 FIBO 010 J c 00020 SM Sumps 37 *15 1.2/05/16 1050 21 F830 010 .3 c 00011 SM 4G 6 12/05/16 1051 :a 1'83il 010 J c 00022 SM 44 1 12/05/16 1053 :n FHJO OLO 3 c 00023 SM Sump.-. so 15 12/05/16 1054 ;:-1 1'830 OlO 3 c 00014 SM Sumps 42 -3 12/05/16 !055 25 FBJO 010 3 c 00025 SM Sumps 41 -6 ll/05/16 1057 2G F830 OlO 3 c 00016 SM dO -8 12/05/16 1058 27 FS30 OLO ) c DOOZ7 SM Sumps 39 -10 12/05/16 1059 28 F830 OLD J c 00018 SM Sumps 35 -19 12/05/16 HOO F830 010 3 c 00019 SM 48 u 12/05/16 1102 30 F830 010 3 c 00030 SM Sumps 44 1 12/05/16 *1103 Comnu?nts :;ienatur1.* below, lhl':' required d*l'ck and har.ksround chcd:. wen* sathfactorily performed prior to U!>l' of the in:;trumcnt idcntific.'C.I below. Ludlum 2929 Benchtop Instrument ,.rn .. !JJ:s: t<lunl 2929 S/N: 182597 r.1te MflA 3 l 25.l a 0.364 43-JO-l S/N: 188736 cpm min 1lp111peor;1u.:a Tech A Sign/ Date /J. * ;, J /1.-S-16 f3 43.4 l 73.6 Cal Due Dille: S/13/2017 0.434 T cr.h ll Si1;n/ D<lle I ) I\ Cpm min Page l of 1 Page 4 Att. 4 Data Assessment F8300103}}
                                                                              *
* Correlation, R
* 0.963 2200
                                                                            ..                      Ell BeS! F~ Line 1800
* 0 0
1600
    *      *
* 0
      -1.8          *1.2            -0.6              0.0              0.6        1.2      1.8 Theoretical Quantiles (Standard Normal)
Page 2                            Att. 4 Data Assessment                  F8300103
 
Smear _Data _calculation_Sheet_101316 I                                                                                               IOSB Final Status Survey                                                                                                                               I LCl     LC1       LC3 LC4                 LC6         LC5                                     flCPM                     fldpm               O<>te/Time of Count                                   Sample   Comment~
1     F830   020           3         c       00001           SM           tower Sump                     47                       .7             10/21/16                   0930 2     F830     010           3         c       00002           SM         Lower Sump                     41                       *21             10/21/16                   0932 3     F830     010           3         c       00003           SM         Lower Sump                     44                       -14             10/21/16                   0935
    '1   f!!30   010           3         c       00004           SM         Lower Sump                     42                     -18               10/21/16                   0937 5     F830     010           3         c       00005           SM         Lower Sump                     56                       14             10/21/16                   0938 6     F830     010           3         c       00006           SM         lower Sump                     58                       19               10/21/16                   09'10 7     F830     010           )         c       00007           SM         Lower Sump                     48                         -'1             10/21/16                   0941 s     F830   010           3         c       00008           SM         Lower Sump                     38                     -27               10/21/16                   0943 9     F830   0.10           3         c       00009           SM         Lower Sump                     40                       -23             10/21/16                   09'15 10     F830   010           3         c       00010           SM         Lower Sump                     46                         .9             10/21/16                   0947 l.l     F830   010           3         c       0001.l         SM           Lower Sump                     so                         0             10/21/16                   0948
  .12     F830   010           3         c       OOOLZ           SM         Lower Sump                     56                       14               10/21/16                   0950 13     F830   010           3         c       00013           SM           Lowe' Sump                     48                         -4             10/21/16                   0951 M     H;JO   ow             3         c       00014           SM           Lower Sump                     53                         7             10/21/16                   0953 15     F830   010           3         c       00015           SM           Lower Sump                     53                         7             10/21/16                   0944 Comments     R\* *.1(t1,n1Ufl' '-":*low, lhl* lf'<1ui11"1(J *;ou1i:1* rhN~ .ind b.lCk{!1ound c1wcl=*. W(~f{' *.:n1':.l:1r:.to1ily r>t*rlonn~ prior la l.rti~ oJ th~ io:;.:tUm(.>nl id1*ntifo~ !.v*low.
Ludlum 2929 Bc'"chtop                   ln~trumcnt
                                                                                                                                                                                                                            ~;.::
r.ll1crl'OCV   bkp, (flUlll 2929 S/N: 182597                                                                   r.)te   t;lll*.'     MOA 3
n ... ..-.
CL                                          11..2.. *~
43-10-15/N:188736                                                                 l;pm     rnin    dpmpN;uc.1 Tech A Sign/ Date         ~,.,.4~                              1z.-i-1r.                                                                                                                                       4Y.<J       I.       78.7 Cal Due Date: 5/13/2017                                 13          0.434 Tech   r. Sign/ Date                             r-:. j ,l                                                                                                                                                     cpm       min     r:pmp.""r   ;:n~:1 Page 3                                                                             Att. 4 Data Assessment                                                                                                   F8300103
 
Copy   or Smear_Dala_Calculation_Shcetl2517jr.xlsx IOSB Final Status Survey I.Cl. l.C2     LC3   LC4     LC6       LCS                         flCPM       f.ldpm         Date/Time of Count                               Sample Comments 16     F!l30   010       J     c   0001i;     SM         Sumps             43             -1             12/05/ 16     1045 17   FisJO   010       3     (   C00l7       SM         Sumps             41             -G             12/05/16     1046 18     F830     010       3     c   00018       SM         Sump~              45             4             12/05/16     1047 l9   FBJO     010       3     (   00019       SM         Sumps             31           -29             12/05/16     1049 20     FIBO   010       J     c   00020       SM         Sumps             37           *15             1.2/05/16     1050 21     F830     010       .3     c   00011       SM         Sump~              4G             6             12/05/16     1051
:a     1'83il   010       J     c   00022       SM         Su1111>~          44             1             12/05/16     1053
:n     FHJO     OLO       3     c   00023       SM         Sump.-.           so           15             12/05/16     1054
  ;:-1   1'830   OlO       3     c   00014       SM         Sumps             42             -3             12/05/16     !055 25     FBJO     010       3     c   00025       SM         Sumps             41             -6             ll/05/16     1057 2G     F830     OlO       3     c   00016       SM         Sump~              dO             -8             12/05/16     1058 27     FS30     OLO       )     c   DOOZ7       SM         Sumps             39           -10             12/05/16     1059 28     F830     OLD       J     c   00018       SM         Sumps             35           -19             12/05/16     HOO 2~      F830     010       3     c   00019       SM         Sump~              48             u             12/05/16     1102 30     F830     010       3     c   00030       SM         Sumps             44             1             12/05/16     *1103 Comnu?nts       l~y :;ienatur1.* below, lhl':' required ~oufcc d*l'ck and har.ksround chcd:. wen* sathfactorily performed prior to U!>l' of the in:;trumcnt idcntific.'C.I below.
Ludlum 2929 Benchtop Instrument l*I<.~:
                                                                                                                                          ,.rn .. >..~ni'.'r'  !JJ:s: t<lunl 2929 S/N: 182597                                                     r.1te   11111.~      MflA 3         l         25.l 43- JO- l S/N: 188736 a          0.364 cpm     min     1lp111peor;1u.:a Tech A Sign/ Date       /J. * '71~. ;, J/1.-S-16                                                                                                             43.4       l         73.6 Tcr.h ll Si1;n/ D<lle   I         ~ ) I\
Cal Due Dille: S/13/2017 f3        0.434 Cpm     min     dpmo~r<.1rN Page l of 1 Page 4                                                     Att. 4 Data Assessment                                                                                 F8300103}}

Latest revision as of 14:30, 24 February 2020

Final Status Survey Summary Report, January 30, 2017, Iosb Main Sump, Survey Unit F8300103
ML17065A063
Person / Time
Site: Rancho Seco
Issue date: 01/30/2017
From:
Sacramento Municipal Utility District (SMUD)
To:
Office of Nuclear Material Safety and Safeguards
Shared Package
ML17065A032 List:
References
DPG 17-038
Download: ML17065A063 (20)
v • d • e


Text

Rancho Seco Final Status Survey Summary Report January 30, 2017 IOSB Main Sump Survey Unit F8300103 FSS Engineer Lead FSS Engineer Approved By: /It>,

  • Manager,

':nc:o

!!.fa-.- Date:

Seco Assets

..:z/,:i.y~ ;t

FINAL STATUS SURVEY F8300i03 Survey Unit:

F8300103, Interim Onsite Storage Building (IOSB) Main Sump Survey Unit

Description:

Operating History: Designed primarily to store packaged radioactive waste containers safely, protected from the elements, and maintain radiological dose as low as reasonably achievable (ALARA), each storage cell possibly stored media of many types, including filters, resins, contaminated chemicals, DAW, activated reactor components, contaminated

. plant components and other contaminated items.

Site Characterization: Static measurements were made of the interior surfaces of the sump,.

to confirm the absence or presence of plant-derived radionuclides. Static measurements showed a mean gross activity level of 2,40 I dpm/l 00 cm 2 and a maximum value of 3,056 dpm/l 00 cm 2

  • The statistics of the sump results combines walls, floor, and ceiling data.

Based on the levels of gross activity reported, the area was determined to be a Class 3 area.

Survey Unit Design Information:

The Survey Unit Design Parameters are presented in Table 1 below. The survey unit and measurement locations are depicted on the maps in Attachment 1. Static measurement locations were randomly determined and approximately 14% of the area scanned by beta scanning. The instrumentation used for the survey along with the MDC values are listed in Table 2-1 Attachment 2.

FSS Outside Area Class 3 F8300143

FINAL STATUS SURVEY F8300103 Table 1, Survey Unit Design Parameters Survey Package: F830 Sumps Survey Unit: 10 Class 03 SU Area (m 2 )

  • 80 Evaluator: JR DCGLw: 43,000 Gross Activity DCGL Area Factor NA Class 3 Design DCGLemc (dpm/1 OOcm 2 ): NA Class 3 DCGLemc: NA Class 3 LBGR: 21,500 Default= 50% DCGL Sigma: 466 Scoping Survey Data for Truck Bay Tvoe I error: 0.05 Type II error: 0.05 Predominant Nuclide Cs-137 Sample Area (m 2 ) N/A Total Instrument Efficiency: 0.132 Total Area Scanned (m 2): 11.1 Scan Coveraqe (%) ;{~{<~:lio/l:' Class 3 Choosing 'N/A' sets material Material Type: N/A background to "O"

,_ :<L ~.;};,_ ::~;;:oa:ic.Ui~~esf\i~f!J'~¥~t;:;ff;~i).: .-'.\~.,,;:;;f; *. ~;_\ :~::*: . :*; *:: .,:' cO:Oi'ih~ilis: :.* ;;: *'> * ",>*: :; **~

Z1-a: . 1.6.45 Z1-B: 1.645 Sign p: 0.99865 Calculated Relative Shift: 46.:1 Relative Shift Used: .3.o Uses 3.0 if Relative Shift >3 N-Value: .1.1 N-Value+20%: 14 Survey Results:

A total of 30 direct measurements were made in F8300 I 03 with 15 each being collected in the upper and lower sumps. The results of the static measurements are shown in Table 2.

All of the static measurements were less than the DCGL. None of the scan measurements indicated areas of elevated activity. Swipe data did not indicate elevated activity levels above the MDA.

2 FSS Main Sump F8300103

FINAL STATUS SURVEY F8300103 Table 2, Static Measurement Results Number S~inple #* Beta (cpm) ~eta.(dpmf 1 F8300103X00001 307 2,326 2 F8300103X00002 302 2,288 3 F8300103X00003 312 2,364 4 F8300103X00004 206 1,561 5 F8300103X00005 234 1,773 6 F8300103X00006 244 1,848 7 F8300103X00007 260 1,970 8 F8300103X00008 215 1,629 9 F8300103X00009 243 1,841 10 F8300103X00010 209 1,583 11 F8300103X00011 248 1,879 12 F8300103X00012 220 1,667 13 F8300103X00013 288 2,182 14 F8300103X00014 294 2,227 15 F8300103X00015 234 1,773 16 F8300103X00016 249 1,886 17 F8300103X00017 258 1,955 18 F8300103X00018 255 1,932 19 F8300103X00019 296 2,242 20 F8300103X00020 208 1,576 21 F8300103X00021 229 1,735 22 F8300103X00022 215 1,629 23 F8300103X00023 242 1,833 24 F8300103X00024 208 1,576 25 F8300103X00025 247 1,871 26 F8300103X00026 258 1,955 27 F8300103X00027 228 1,727 28 F8300103X00028 223 1,689 29 F8300103X00029 252 1,909 30 F8300103X00030 305 2,311 3 FSS Main Sump F8300103

FINAL STATUS SURVEY F8300103 Table 3 contains the statistical summary of the static measurement data for the Outside Area Class 3.

Table 3, Beta Summary Statistics Beta Static Sumps Mean 1,891 Median 1,860 Standard Deviation 249 Minimum 1,561 Maximum 2,364 Count 30 Survey Unit Data Assessment:

The survey design required 14 static measurements for the Sign Test. A total of 30 static*

measurements were collected. The critical value and the results of the Sign Test are presented in Table 4. The sample mean and median values were less than the DCGL. The sample standard deviation was greater than the design standard deviation but both values of sigma resulted in a relative shift greater than three (3), no additional samples were required.

Table 4, Data Assessment .. _., ..

Results

'~

, : .:*-$t-atic:. o.a~a'V~1u~~':: .:_:.* .:< ....... ***:***;:>.

-....... '* .... r, **

  • Gomrn~nts:::; ...

lNumber of Samples: 30 Median: 1,860 Mean: 1,891 Static Data Standard Deviation: 249 Maximum: 2,364

- *__ sign rest Resuits. *** * ; . ':.

  • .  :; ?: .. Comments* *.

Adjusted N Value: 14 S+ Value: 30 Critical Value: 10 Cri.t~ria S~tisfac:ti'ci.n .  :

Comment$*

Sufficient samples collected: Pass Maximum value <DCGLw: Pas$

Median value <DCGLw: Pass Mean value <DCGLw: Pass Maximum value <DCGLemc: NA SiQn test results: Pass

'.*'. *{

      • .* Fir:iaf Status '* Comments*

The survey unit passes all conditions: Pass Survey Unit Investigations and Results:

No investigations were required for either direct or scan measurements and no investigation results are reported.

4 FSS Main Sump F8300103

FINAL STATUS SURVEY F8300103 ALARA Statement:

As stated in Chapter 4 of the LTP, as ,long as the residual activity within the survey unit is less than the DCGL, the ALARA criterion has been met.

Changes in Initial Survey Unit Assumptions:

The survey unit was designed as a Class 3 survey and the sample results are consistent with that classification. No individual measurement exceeded the DCGL. No potential areas of elevated activity were detected. *

==

Conclusion:==

The FSS of this survey unit was properly designed as a Class 3 survey based on the results of the investigation survey. The required number of direct measurements was made and the scan coverage met the requirement of Table 5-6 of the LTP. All of the static measurements were less than the DCGL. No investigations were required.

The static measurement data support rejection of the null hypothesis, providing high confidence that the survey unit satisfied the release criteria and that the data quality objectives were met.

It is concluded that survey unit F83001043 meets the release criteria of JOCFR20.1402.

5 FSS Main Sump F8300103

Attachment 1

'Maps January 30, 2017 Survey Unit F8300103

$ F8300103X00010 13 =1,583 dpm/100 cm2

...,, .. i , ..... (**1 ~ F8300103XOO 11

. *.,) \ \.. *,.:1 I :i\

13 =1,879 dp 00 cm*

-* F.8300103X00008

$13 =1,629 dpm/100 cm' F8300103X00006

$13 =1,848 dpm/100 crn2 F8300103X00013

$13 =2,182 dl?[.lli100 cm"

'**** $F8300103X00012 **

13 =1,667 dpm/100 cm'

(/)

F830010;3X00003 13 *=2,364 dpm/100- crri'

$ F8300103X00014

. \~...

13 =2,227 dpm/100 cm" r'- \ $

.;t; & F8300103XOOO 7

-: )  ;~

r-w 13 =1,970 dpm/1 O cm2

~. ,..1

$ F83001 03X00015 13 =1,773 dpm/100 cm'

$ F8300103Xo0002 j3 =2,288 dpm/100 Cm': F8300103X00005

$13 =1,773 dpm/100 c F8300103X00009

=1,841 dpm/100 cm' SMUD liA TIDEWATER rnc UCllll nts I s.t!CllllllS I Ml'XLlU **uu.trlt".

F8300103X00004 13 =1,561 dpm/100 cm.,

SUMP* MAJN CEILING WALLS FLOOR $

SMUD Appro*..ed by.

Appro'IOI date:

ouno11 ReY No.:

1 Page I Att. 1 Maps F8300103

.F8300103X00027 13 $,727 dpm/100 cm2 ~~_'.;(i\)\:l .t U ;J\:*,:_:'.,-

$ F8300103X00025 F8300103X00028$

13 =1,871 dpm/100 cm2 13 =1,689 dpm/100 cm2 F8300103X00020 $ F8300103X00030 F8300103X00029 13 =1,576 dpm/100 cm 2

  • 13 =2,311 dpm/100 crri2 -~ =1,909 dpm/100 cm'
  • F8300103X00016 $ F8300103X00017 F8300103X00022 13 =1,886 dpmhoo cm' 13 =o1,955 dpm/100 cm2 13 =1,629 dpm/100 cm' F8300103X00018 $

13 =1,932 dpm/100 cm2 F8300103X00021 $E8300103~00026 .

13 =1,735 dpm/100 cm' 13 =1,955 dpm/1 DO cm2 F8300103X00019 13 =2,242 dpm/100 cm' F8300103X00023 $

13 =1,833 dpm/100 cm' SMUD (ii TIDEWATER IPIC rwom:ns tstt!1u1S1S' 'l!osJUu u.tu.n£as F8300103X00024 SUMP-UPPER 13 =1,576 dpm/100 cm' SMUD Appro*od by.

Drawing No.:

==

Description:==

Drown 8.

Oc'd:

Approval dote:

Date:

Rev No.:

Page 2 Att. 1 Maps F8300103

r-*"1

        • i-****1n,~

j . '- '**';

0

..... .f

.,.\

,*ll'* ..... **:~**-'

c.~)

<r~

F8300103X00001

$ J.3 =2,326 dphl/100 cm>

SMUD Wl TIDEWATER INC fll'Cl.-tOIS I Ql{lfflUt. 1 f'll~lll MAllAUllS SUMP SMUD Approved by.

A provol dote:

Rev No.:

Page 3 Art. I Maps F8300103

Attachment 2 Instrumentation December 12, 2016 Survey Unit F8300103

Table 2-1. Survey Unit Instrumentation

Meastjrement ~inimuniUetectab\e Actl.yity* Detectptc Cailbt;~tipn

. Instn1mentT)',~e. * :. D~e..':t>.~teb

'*- ,:. ; Typ'e Effidendes ' . *.*-,*

Beta Static Ludlum Model Beta - 44 7 dpm/100 cm 2 13.2% 317897/331972 Measurement 2350-1 2/10/17 Ludlum Model 44-116 B Detector Beta Static Ludlum Model Beta - 504 dpm/J 00 cm 2 13.2% 317897/331972 Measurement 2350-1 2/10/17 Ludlum Model 44-116 B Detector Swipe Ludlum Model 2929 Beta - 74 dpm/100 cm2 42.8% 166716/170380 Measurements Ludlum Model 44- 11/3/16 10-1 Swipe Ludlum Model 2929 Beta - 79 dpm/ I 00 cm 2 42.8% 166716/170380 Measurements Ludlum Model 44- I 1/3/16 I 0-1

  • Minimum detectable activities for the count rate instrumentation were calculated in accordance with NUREG-1507, "Minimum Detectable Concentrations with Typical Radiation Survey Instruments for Various Contaminants and.Field Conditions" (U.S. NRC, 1997).

b Detectors are required to be calibrated once every 12 months. Calibration due date indicates the date by which the detector must be calibrated again.

cm 2 = square centimeters cpm = counts per minute dpm =disintegrations per minute Pagel Att. 2 Instrumentation F8300103

Static Measurement MDA Beta Survey Type PR331972 Detector Number 187 Background count rate (cpm) 1 Count Time (min) 0.132 Efficiency 100 Area of Detector (cm 2)

Constants 60 sec/min 2.54 cm/in Assumptions Background count time and sample count time are equivalent Calculate Static MDA Static MDA =3 + 4.65(Br

  • t) 0*5/t
  • E

Where: Br Background Countrate t Count Time (min)

E Efficiency

  • A Area of detector (cm 2)

Static MDA 504 dpm/100 cm 2 Page 2 Att. 2 Instrumentation F8300103

Beta Survey Type PR331972 Detector Number 145 Background count rate (cpm) 1 Count Time (min) 0.132 Efficiency 100 Area of Detector (cm 2)

Constants 60 sec/min 2.54 cm/in Assumptions Background count time and sample count time are equivalent Calculate Static MDA Static MDA =3 + 4.65(Br

  • t)°- 5/t
  • E

Where: Br Background Countrate t Count Time (min)

E Efficiency A Area of detector (cm 2)

Static MDA 447 dpm/100 cm 2 .

Page 3 Att. 2 Instrumentation F8300103

Attachment 3 Investigation January 30, 2017 Survey Unit F8300103 (none required)

Att. 3 Investigation F8300103

Attachment 4 Data Assessment February 2, 2017 Survey Unit F8300103

Histogram for Beta Static Activity (dpm/100 cm2) Sumps 1Activily 7 Number of Values 301

/----~- Minimum 1.560.61

//

Mai-:imum 2,363.64!

SD 249.26 6 6 Skewness 0.56 Kurtosis *0.78 1 BMean 1,891.161

// 5 5 BMedian 1.859.85[

0 Normal Di; tribulion 0Less Bins

£1iii.f:i'£0:t.i!t/ OMoreBins u.

2 1 1 1606 1686 1767 1847 1927 II 2008 0

2088 Ill 2168 2248 2329 Page I Att. 4 Data Assessment F8300103

Activ~

Q-Q Plot for Beta Static Activity (dpm/100 cm2) Sumps N = 30 Mean= 1891 Sd

  • 249.3
  • Slope
  • 246.8 lnteicept
  • 1891
  • Correlation, R
  • 0.963 2200

.. Ell BeS! F~ Line 1800

  • 0 0

1600

  • *
  • 0

-1.8 *1.2 -0.6 0.0 0.6 1.2 1.8 Theoretical Quantiles (Standard Normal)

Page 2 Att. 4 Data Assessment F8300103

Smear _Data _calculation_Sheet_101316 I IOSB Final Status Survey I LCl LC1 LC3 LC4 LC6 LC5 flCPM fldpm O<>te/Time of Count Sample Comment~

1 F830 020 3 c 00001 SM tower Sump 47 .7 10/21/16 0930 2 F830 010 3 c 00002 SM Lower Sump 41 *21 10/21/16 0932 3 F830 010 3 c 00003 SM Lower Sump 44 -14 10/21/16 0935

'1 f!!30 010 3 c 00004 SM Lower Sump 42 -18 10/21/16 0937 5 F830 010 3 c 00005 SM Lower Sump 56 14 10/21/16 0938 6 F830 010 3 c 00006 SM lower Sump 58 19 10/21/16 09'10 7 F830 010 ) c 00007 SM Lower Sump 48 -'1 10/21/16 0941 s F830 010 3 c 00008 SM Lower Sump 38 -27 10/21/16 0943 9 F830 0.10 3 c 00009 SM Lower Sump 40 -23 10/21/16 09'15 10 F830 010 3 c 00010 SM Lower Sump 46 .9 10/21/16 0947 l.l F830 010 3 c 0001.l SM Lower Sump so 0 10/21/16 0948

.12 F830 010 3 c OOOLZ SM Lower Sump 56 14 10/21/16 0950 13 F830 010 3 c 00013 SM Lowe' Sump 48 -4 10/21/16 0951 M H;JO ow 3 c 00014 SM Lower Sump 53 7 10/21/16 0953 15 F830 010 3 c 00015 SM Lower Sump 53 7 10/21/16 0944 Comments R\* *.1(t1,n1Ufl' '-":*low, lhl* lf'<1ui11"1(J *;ou1i:1* rhN~ .ind b.lCk{!1ound c1wcl=*. W(~f{' *.:n1':.l:1r:.to1ily r>t*rlonn~ prior la l.rti~ oJ th~ io:;.:tUm(.>nl id1*ntifo~ !.v*low.

Ludlum 2929 Bc'"chtop ln~trumcnt

~;.::

r.ll1crl'OCV bkp, (flUlll 2929 S/N: 182597 r.)te t;lll*.' MOA 3

n ... ..-.

CL 11..2.. *~

43-10-15/N:188736 l;pm rnin dpmpN;uc.1 Tech A Sign/ Date ~,.,.4~ 1z.-i-1r. 4Y.<J I. 78.7 Cal Due Date: 5/13/2017 13 0.434 Tech r. Sign/ Date r-:. j ,l cpm min r:pmp.""r  ;:n~:1 Page 3 Att. 4 Data Assessment F8300103

Copy or Smear_Dala_Calculation_Shcetl2517jr.xlsx IOSB Final Status Survey I.Cl. l.C2 LC3 LC4 LC6 LCS flCPM f.ldpm Date/Time of Count Sample Comments 16 F!l30 010 J c 0001i; SM Sumps 43 -1 12/05/ 16 1045 17 FisJO 010 3 ( C00l7 SM Sumps 41 -G 12/05/16 1046 18 F830 010 3 c 00018 SM Sump~ 45 4 12/05/16 1047 l9 FBJO 010 3 ( 00019 SM Sumps 31 -29 12/05/16 1049 20 FIBO 010 J c 00020 SM Sumps 37 *15 1.2/05/16 1050 21 F830 010 .3 c 00011 SM Sump~ 4G 6 12/05/16 1051

a 1'83il 010 J c 00022 SM Su1111>~ 44 1 12/05/16 1053
n FHJO OLO 3 c 00023 SM Sump.-. so 15 12/05/16 1054
-1 1'830 OlO 3 c 00014 SM Sumps 42 -3 12/05/16 !055 25 FBJO 010 3 c 00025 SM Sumps 41 -6 ll/05/16 1057 2G F830 OlO 3 c 00016 SM Sump~ dO -8 12/05/16 1058 27 FS30 OLO ) c DOOZ7 SM Sumps 39 -10 12/05/16 1059 28 F830 OLD J c 00018 SM Sumps 35 -19 12/05/16 HOO 2~ F830 010 3 c 00019 SM Sump~ 48 u 12/05/16 1102 30 F830 010 3 c 00030 SM Sumps 44 1 12/05/16 *1103 Comnu?nts l~y
;ienatur1.* below, lhl':' required ~oufcc d*l'ck and har.ksround chcd:. wen* sathfactorily performed prior to U!>l' of the in:;trumcnt idcntific.'C.I below.

Ludlum 2929 Benchtop Instrument l*I<.~:

,.rn .. >..~ni'.'r' !JJ:s: t<lunl 2929 S/N: 182597 r.1te 11111.~ MflA 3 l 25.l 43- JO- l S/N: 188736 a 0.364 cpm min 1lp111peor;1u.:a Tech A Sign/ Date /J. * '71~. ;, J/1.-S-16 43.4 l 73.6 Tcr.h ll Si1;n/ D<lle I ~ ) I\

Cal Due Dille: S/13/2017 f3 0.434 Cpm min dpmo~r<.1rN Page l of 1 Page 4 Att. 4 Data Assessment F8300103

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