ML052010547
| ML052010547 | |
| Person / Time | |
|---|---|
| Site: | Saxton File:GPU Nuclear icon.png |
| Issue date: | 03/30/2005 |
| From: | Brosey B, Holmes R, Paynter A GPU Nuclear Corp |
| To: | Office of Nuclear Reactor Regulation |
| Shared Package | |
| ML052010538 | List: |
| References | |
| E900-05-004, Rev 0 | |
| Download: ML052010547 (62) | |
Text
FssEnt-y SNEC CALCULATION COVER SHEET CALCULATION DESCRIPTION Calculation Number Revision Number Effective Date Page Number E900-05-004 0o i of 9 Subject PENELEC Switch Yard Class 3 Control Building - Survey Design Question 1 - Is this calculation defined as 'In QA Scope"? Refer to definition 3.5. Yes 1 No I Question 2 - Is this calculation defined as a "Design Calculation"? Refer to definitions 3.2 and 3.3. Yes E No El NOTES: If a 'Yes' answer is obtained for Question 1, the calculation must meet the requirements of the SNEC Facility Decommissioning Quality Assurance Plan. If a "Yes' answer is obtained for Question 2, the Calculation Originator's immediate supervisor should not review the calculation as the Technical Reviewer.
DESCRIPTION OF REVISION APPROVAL SIGNATURES Calculation Originator B. Broseyl 3 Technical Reviewer R. Holmes/!
Additional Review A. Paynter/l4 W Additional Review .
SNEC CALCULATION SHEET Calculation Number Revision Number Page Number E900-05-004 0 Page 2 of 9 Subject PENELEC Switch Yard Class 3 Control Building - Survey Design 1.0 PURPOSE 1.1 The purpose of this calculation is to develop a survey design for the PENELEC Switch Yard Control Building. This section of the Switch Yard is shown on Attachment 1-1 through 1-3 and is composed of a Class 3 building structure housing electrical switching and control equipment. The following site designations apply (PS1 = building interior;, PS2 = building exterior):
1.1.1 PS1 Painted concrete surfaces (floor) -45.3 m2 1.1.2 PS1 Painted steel surfaces (deck plate and doors) -19 m2 1.1.3 PS1-3 -Aluminum siding and ceiling materials (ceiling & wall covering) -130.6 m2 1.1.4 PS2 Concrete block (exterior base wall) -40.5 m2 1.1.5 PS2 Unpainted concrete (exterior base wall, side walk and steps) -24.3 m2 1.1.6 PS2 Unpainted steel (roofing materials) -67.7 m2 1.1.7 PS2 Aluminum siding (exterior upper walls) -63.4 m2 Items not included in this survey: handrails, window glass, awnings covering door entrance areas, switch gear/electrical cabinets, battery banks, desk/chair, file and equipment storage cabinets, spare parts, and interior of cable chase areas.
1.2 The PENELEC Switch Yard is an operational electrical distribution facility. The western portion of the Switch Yard (west of grid line 131), lies mainly in site area 0L12.
Transformers, switching devices and cabling carry extremely dangerous levels of electricity up to -115.000 volts. Therefore, SNEC management has designated only select items/areas to be the subject of a Final Status Survey. A detailed justification and basic safety considerations for a limited survey approach is provided in Attachment 2-1. The Switch Yard building is on the perimeter of the Switch Yard 'Hazard Area". See Attachment 1-1.
2.0
SUMMARY
OF RESULTS The following information should be used to develop a survey request for these survey units.
2.1 The effective DCGLw value is listed below. The US NRC has reviewed and concurred with the methodology used to derive these values. See Reference 3.1. In this case, the area is assumed to contain a radionuclide mix similar to OL1 and 0L2 which should be a conservative estimate of contaminant concentrations that could be present in the Switch Yard Control building.
Table 1, DCGLw Values Gross Activity DCGLw (dpml100 cm') l DCGLw (cpm - Painted Surface) l DCGLw (cpm - Unpainted Surface) l 44,317 (33,238 A.L.) 4,607 (A.L.) 5,863 (A.L.)
NOTE 1: A.L is the site Administrative Limit (75% of effective DCGLw).
NOTE 2: Decay date is December 15, 2004.
2.2 All building surfaces shall be scanned with a GFPC survey instrument. The detection efficiency for Cs-1 37 beta radiation shall be no less than 23.9% (Et).
ma SNEC CALCULATION SHEET Calculation Number Revision Number Page Number E900-05-004 0 l Page 3 of 9 Subject PENELEC Switch Yard Class 3 Control Building - Survey Design 2.3 GFPC Surface Measurements - All Survey Areas 2.3.1 The fraction of Cs-137 in this sample mix is presented in Table 2 as 0.599. Since this building is in good condition, no additional efficiency loss from structural defects is assumed for building surfaces. However, a paint thickness evaluation has been performed and beta radiation detection efficiency loss from a painted surface has been estimated (see Attachment 3-1 to 3-3 and Reference 3.2).
2.3.2 Table 2, GFPC Detection Efficiency Data - Unpainted Surfaces Ci Cs l% Cs-137 Efficiency Loss Factor countsidisintegration Ct 0.478 0.5 59R9* 1 0.143
'Data from Reference 3.1.
Table 3, GFPC Detection Efficiency Data - Painted Surfaces Cl C Es l% Cs-137 Efficiency Loss Factor- Paint counts/disintegation t 0.478 0.5 59.9 0.8* 0.115
'Data from Reference 3.1 and 3.2.
2.3.3 The calculated MDCscan results are shown below for each type of structural material.
Table 4, GFPC MDCscan Data MDCscan (dpm/1 00 cm2)
Material Type (1) (2) Action Level - Phase I Scanning' (3)
Painted Concrete, PS1-1 1,154 700 gcpm Painted Steel, PS1-2 1,052 600 gcpm Interior Aluminum Siding & Ceiling, PS1-3 907 700 gcpm Concrete Block, PS2-1 975 800 gcpm Unpainted Concrete, PS2-2 924 700 gcpm Unpainted Steel, PS2-3 841 600 gcpm Exterior Aluminum Siding, PS2-4 907 700 gcpm
'Surveyor may use the lowest value from column 3 above as an action level for all material types (600 gcpm). See Attachments 4-1 through 4-8.
2.3.4 The Compass computer program (Reference 3.3) was used to calculate the minimum number of static measurement points shown below for each type of structural material.
SNEC CALCULATION SHEET Calculation Number Revision Number Page Number E900-05-004 0 Page 4 of 9 Subject PENELEC Switch Yard Class 3 Control Building - Survey Design Table 5, GFPC Random Start - Systematic Measurement Points Material Type Minimum No. of Static Measurements Painted Concrete, PS1-1 8 (10 points provided)
Painted Steel, PS1-2 9 (10 points provided)
Interior Aluminum Siding & Ceiling, PS1-3 8 (10 points provided)
Concrete Block, PS2-1 8 (10 points provided)
Unpainted Concrete, PS2-2 8 (9 points provided)
Unpainted Steel, PS2-3 9 (18 points provided)
Exterior Aluminum Siding, PS24 8 (10 points provided)
See Attachment 5-1 through 6-7 also Attachment 7-1 through Attachment 7-14.
2.3.5 Class 3 scan coverage is typically judgmental or random to -10% of the accessible surface area IAW Reference 3.4. The following Table indicates the minimum degree of coverage expected for these survey units.
Table 6, Scan Coverage Material Type Minimum Scan CoveragelArea Painted Concrete, PS1-i Painted Concrete Floor @ Doors & Floor Around Desk Area (see Attachment 5-1)
Painted Steel. PS1-2 Steel Door Surfaces (both inside & outside surfaces, see Attachment 5-2)
InteriorAluminumSiding & Ceiling. PS1-3 Aluminum Wall& Ceiling Coverings (see Attachment 6-1 forApproximate locations)-
Concrete Block, PS2-1 Block Wall Areas (see Attachment 6-2 for Approximate locations)'
Unpainted Concrete. PS2-2 Unpainted Tops of Side Walk & Concrete Steps (see Attachment 5-5)
Unpainted Steel. PS2-3 Lower 20' of Unpainted Steel Roof - West & East Sides (see Attachment 5-6)
Exterior Aluminum Siding, PS2-4 Aluminum Wall Covering (see Attachment 6-3 for Approximate locations)'
'Note: Approximate locations are identified on the indicated diagrams as 1 m2 areas. These locations were selected using a random selection process. Surveyor should survey the approximate locations indicated and cover about 1 m2 of area at each location.
NOTE If the > 10% of the DCGLw values (Table 1) is discovered in this Class 3 area, the survey unit should be re-classified and re-surveyed IAW Reference 3.4, Table 5-7. To ensure that an elevated count rate is the result of Cs-137 contamination, sample (if possible) any surface location above the action levels of Table 4, and gamma scan the sampled materials (core or scrape the surface to collect the sample IAW Reference 3.5).
3.0 REFERENCES
3.1 SNEC Calculation No. E900-05-002, PENELEC Switch Yard, Class 1 Area - Survey Design.
3.2 SNEC Calculation No. 6900-02-028, GFPC Instrument Efficiency Loss Study.
3.3 Compass Computer Program, Version 1.0.0, Oak Ridge Institute for Science and Education.
3.4 SNEC Facility License Termination Plan.
3.5 SNEC Procedure E900-IMP-4520.04, "Survey Methodology to Support SNEC License Termination".
C-- SNEC CALCULATION SHEET Calculation Number Revision Number Page Number E900-05-004 I 0 Page 5 of 9 Subject PENELEC Switch Yard Class 3 Control Building - Survey Design 3.6 Visual Sample Plan, Version 2.0 (or greater), Copyright 2002, Battelle Memorial Institute.
3.7 SNEC Procedure E900-IMP-4500.59, 'Final Site Survey Planning and DQA".
3.8 GPU Nuclear, SNEC Facility, 'Site Area Grid Map", SNECRM-020, Sheet 1, Rev 2,1/29103.
3.9 GPU Nuclear, SNEC Facility, "Switch Yard Control Building', SNECRM-017, Sheet 1 & 2, Rev 0, 12/03199.
3.10 SNEC Procedure E900-IMP-4520.06, 'Survey Unit Inspection in Support of FSS Design.
3.11 NUREG-1575, "Multi-Agency Radiation Survey and Site Investigation Manual', August, 2000.
3.12 Microsoft Excel 97, Microsoft Corporation Inc., SR-2, 1985-1997.
3.13 SNEC Calculation No. E900-03-018, 'Optimize Window and Threshold Settings for the Detection of Cs-137 Using the Ludlum 2350-1 and a 44/10 Nal Detector", 8/7103.
3.14 ISO 7503-1, Evaluation of Surface Contamination, Part 1: Beta-emitters (maximum beta energy greater than 0.15 MeV) and alpha-emitters, 1988.
4.0 ASSUMPTIONS AND BASIC DATA 4.1 The Compass computer program is used to calculate the required number of random start systematic measurements to be taken in these survey units (Reference 3.3).
4.2 Background values are taken from like materials shown in Attachment 8-1 to 8-4.
4.3 Switch Yard Control Building (SYCB) surface variability measurements are shown in Attachment 9-1 to 9-5.
4.4 Structural surface area survey designs require the WRS statistical testing criteria.
4.5 The number of points chosen by Compass are located on the survey maps for the respective survey units by the Visual Sample Plan (VSP) computer code (Reference 3.6).
Additional points may have been added as deemed appropriate or as an internal operation of the VSP computer code.
4.6 Reference 3.4 and 3.7 was used as guidance during the survey design development phase.
4.7 The site area drawings used to determine the physical extent of this area are listed as Reference 3.8, and 3.9.
4.8 Remediation History No remediation has been performed in these survey units.
4.9 The western portion of the PENELEC Switch Yard resides within the OL12 site area. The sample mix is assumed to be the same as that currently assigned to the OL1 and OL2 areas (CV yard). The sample list was decayed to December 15th, 2004. In all, twenty three (23) sample results were used to determine the best representative mix.
4.10 The sample database used to determine the effective radionuclide mix has been drawn from previous samples that were assayed at off-site laboratories. This list is shown in Reference 3.1, and includes (23) analysis results. Review of the data shows several radionuclides have not been positively identified at any significant concentration. These
C- SNEC CALCULATION SHEET Calculation Number Revision Number Page Number E900-05-004 0 Page 6 of 9 Subject PENELEC Switch Yard Class 3 Control Building - Survey Design radionuclides have been removed from the data set and will not be considered further.
Radionuclides removed include Am-241, C-14, Eu-152, Ni-63, Pu-238, Pu-239 and Pu-41.
Additionally, the data shows Cs-137 to be the predominant radioactive contaminant found in the area. Sr-90 on the other hand, was positively identified in only one (1) sample. H-3 was identified as a positive contaminant in six (6) samples, and Co-60 was identified in three (3) samples.
The decayed sample results were input to the spreadsheet titled "Effective DCGL Calculator for Cs-137" to determine both the effective volumetric DCGLw and gross activity DCGLw values for this area. The output of this spreadsheet is shown in Reference 3.1.
4.11 The survey units described in this survey design were inspected by SNEC personnel. A copy of portions of the SNEC facility inspection report (Reference 3.10), is included as Attachment 10-1.
4.12 No special area characteristics including any additional residual radioactivity (not previously noted during characterization) have been identified in this survey area.
4.13 The decision error for this survey design is 0.05 for the a value and 0.1 for the p value.
4.14 'Special measurements" (as described in the SNEC LTP) are not included in this survey design.
4.15 No additional sampling will be performed 1AW this survey design beyond that described herein.
4.16 SNEC site radionuclides and their individual DCGLw values are listed on Exhibit I of this calculation.
4.17 The survey design checklist is listed in Exhibit 2.
4.18 Area factors are not applicable in Class 3 areas.
5.0 CALCULATIONS 5.1 All calculations are performed internal to applicable computer codes or within an Excel spreadsheet.
6.0 APPENDICES 6.1 Attachment 1-1, is a diagram of the PENELEC Switch yard area.
6.2 Attachment 1-2 and 1-3, are GPU Nuclear drawings of the PENELEC switch Yard Control Building.
6.3 Attachment 2-1, is the justification for a limited survey of the Switch Yard and some basic safety concerns for this area.
6.4 Attachment 3-1 to 3-3, are basic data showing first the thickness of paint on concrete surfaces in the SYCB, and then the impact of painted surfaces on beta radiation detection efficiency.
6.5 Attachment 4-1 to 4-8, are the MDCscan calculation sheets for these survey units.
6.6 Attachment 5-1 to 5-5, are the Compass indicated and VSP plotted static measurement points for these survey units. Judgmental scan areas are also located on select diagrams.
6.7 Attachment 6-1 to 6-3, are randomly located scan locations for three survey units.
m a- SNEC CALCULATION SHEET Calculation Number Revision Number Page Number E900-05-004 0 Page 7 of 9 Subject PENELEC Switch Yard Class 3 Control Building - Survey Design 6.8 Attachment 7-1 to 7-14, are Compass computer code output for these survey units.
6.9 Attachment 8-1 to 8-4, are generic background values for material types present in these survey units.
6.10 Attachment 9-1 to 9-5, are typical survey unit variability measurements for the SYCB.
6.11 Attachment 10-1, is a copy of the survey unit inspection report for the SYCB.
SNEC CALCULATION SHEET Calculation Number Revision Number Page Number E900-05-004 0 Page 8 of 9 Subject PENELEC Switch Yard Class 3 Control Building - Survey Design Exhibit 1 SNEC Facility Individual Radionuclide DCGL Values (a) 25 mremly Limit 4 mremly Goal 25 mremly Limit (All Pathways) (Drinking Water)
Radionuclide Surface Area Open Land Areas Open Land Areas (b)
(dpm/lOOcm 2 ) (Surface & Subsurface) (Surface & Subsurface)
(pCilg) (pC'/g)
Am-241 2.7E+01 9.9 2.3 C-14 3.7E+06 2 5.4 Co-60 7.1 E+03 3.5 67 Cs-1 37 2.8E+04 6.6 397 Eu-152 1.3E+04 10.1 1440 H-3 1.2E+08 132 31.1 Ni-63 1.8E+06 747 1.9E+04 Pu-238 3.0E+01 1.8 0.41 Pu-239 2.8E+01 1.6 0.37 Pu-241 8.8E+02 86 19.8 Sr-90 8.7E+03 1.2 0.61 NOTES:
(a)While drinking water DCGLs will be used by SNEC to meet the drinking water 4 mrem/y goal, only the DCGL values that constitute the 25 mremly regulatory limit will be controlled under this LTP and the NRC's approving license amendment.
(b) Listed values are from the subsurface model. These values are the most conservative values between the two models (i.e.,
surface & subsurface).
SNEC CALCULATION SHEET Calculation Number Revision Number Page Number E900-05-004 0 Page 9 of 9 Subject PENELEC Switch Yard Class 3 Control Building - Survey Design Exhibit 2 Survey Design Checklist Calculation No. Location Codes E900-0 004 lPS1,1, PS1 2, PS1-3. PS2-1, PS2-2, PS2-3 8 ;2-4 (SYCB)
Status Reviewer ITEM REVIEW FOCUS (Circle One) Initials & Date I Has a survey design calculation number been assigned and is a survey design summary description provided? __________
2 Are drawings/diagrams adequate for the subject area (drawings should have compass CY9eksD)N.
______headings)?
3 Are boundaries properly identified and is the survey area classification dearly indicated? Aes, N/A 4 Has the survey area(s) been properly divided into survey units tAW EXHIBIT 10 es NlA 5 Are physical characteristics of the areahocation or system documented? NIA 6 Is a remediation effectiveness discussion included?Yes, ON '
7 Have characterization survey and/or sampling results been converted to units that are N/es FLU comparable to applicable DCGL values?
8 Issurvey and/or sampling data that was used for determining survey unit variance included? Ye N/A Is a description of the background reference areas (or materials) and their survey and/or Yes (VA sampling results included along with a justification for their selection? \ rep Y 10 Are applicable survey and/or sampling data that was used to determine variability included? N/A 11 Will the condition of the survey area have an impact on the survey design, and has the Yes, A I probable impact been considered in the design? Yes eI Has any special area characteristic including any additional residual radioactivity (not 12 previously noted during characterization) been identified along with its impact on survey Ye N/
design?
13 Are all necessary supporting calculations and/or site procedures referenced or included?
14 Has an effective DCGLw been identified for the survey unit(s)?
15 Was the appropriate DCGLEmc included in the survey design calculation? i )
16 Has the statistical tests that will be used to evaluate the data been identified? sNJ 17 Has an elevated measurement comparison been performed (Class 1 Area)? Yes N/A 18 Has the decision error levels been identified and are the necessary justifications provided? Yes N/A f/6 b5-19 Has scan instrumentation been identified along with the assigned scanning methodology? SeN/A 20 Has the scan rate been identified, and is the MDCscan adequate for the survey design? YesN/A 21 Are special measurements e.g., in-situ gamma-ray spectroscopy required under this design, l t 4 _
andj in th- -14v ~ -fth~A .- AnknA In Yuiitn ~hrc J dy HcnPesCN'1AL .-
22 Is survey instrumentation calibration data included and are detection sensitivities adequate? Yes N 23 Have the assigned sample and/or measurement locations been dearly identified on a diagram Yes NI or CAD drawing of the survey area(s) along with their coordinates? N s 24 Are investigation levels and administrative limits adequate, and are any associated actions rieartv indiecated? I Ye"}
25 For sample analysis, have the required MDA values been determined.? 4 26 Has any special sampling methodology been identified other than provided in Reference 6.3? Yes(R .
ram ^1 savers NOTE: a copy of this completed form or equivalent, shall be included within the survey design calculation.
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1 8 1 7 1 6 I 5 ATTACHM14ENT__
The following are the FirstEnergy specific requirements applicable to entry and work in substations. Please note that other routine safety requirements such as use of PPE, switching & tagging, confined space, etc., are not covered here From subsection 411 "Substations" of section 400 "Electrical Safety" of the FirstEnergy "Energy Delivery Accident Prevention Handbook" the following precautions are to be observed when working in or near Company substations that may be applicable to your question:
411.1 Employees assigned to work in substations or perform switching must be:
(a) Properly qualified through training or work experience.
(b) Familiar with the equipment being operated and knowledgeable of the 'Manual of Operations".
411.5 When handling material and equipment, care must be taken to maintain minimum approach distances. (Approach distances are covered in section 412) 411.6 before driving into a substation, radio antennas on vehicles must be lowered and secured in place.
411.8 A qualified person must escort all unqualified personnel when entering a substation.
(Qualified persons are defined in OSHA 29 CFR 1910.269) 412 Minimum Safe Working Distances from Energized Conductors or Equipment 412.1 Unless properly protected, qualified personnel must maintain minimum working distances and clear hot-stick distances from uninsulated and energized equipment as outlined in the following:
A table follows showing the minimum clearances. The shortest applicable is 2'-1" from 1.1 kV to 3'-2" for 115 kV. Please note however that these distances only apply to "Qualified Personnel".
412.3 Employees/contracted personnel not electrically qualified per the requirements of 29 CFR 1910.269 must maintain a minimum approach of at least 10 feet from energized conductors and equipment.
Note that except for some Company specific terminology, these requirements come from OSHA 29 CFR 1910.
For Final Status Survey (FSS) work in the Saxton Penelec Substation, Radiological Controls technicians who are not electrically qualified per the requirements of 29 CFR 1910.269 must maintain a minimum approach of at least 10 feet from energized conductors and equipment.
Much of the lattice support structure and almost all of the components in the substation are inaccessible to personnel not so qualified. In addition, the ground surface within 10 feet of un-insulated energized equipment would be inaccessible for FSS.
ATTACHMENT 2 -.-=
Page 1 of I Barry Brosey From: "robby marquette" <onemanuke@yahoo.com>
To: "Barry Brosey" <bbrosey@msn.com>
Sent: Monday, March 07, 2005 2:27 PM
Subject:
Paint test from SY bldg
- Barry, Mr. Lewis performed three (3) paint removal efforts on 2"X2" sections of the floor in the switch yard building. The results are as follows:
- 1 0.2;,
- 2 0.4g
- 3 0.4g Hope this is sufficient Rob ATTACHMET- SNT--
3/9/2005
Paint Density Thickness Calculation Three 2" by 2" square areas of paint were removed from the PENELEC Switch Yard Control building concrete floor.
The weight of each paint sample was:
1 0.2 grams 2 0.4 grams 3 0.4 grams Average=> 0.3 grams per 12 square inches 5= 77.4 square centimeters
= 0.004 grams/cmA2
= 4.31 mg/cmA2
Impact of Increasing Density Thickness On Efficiency 1.1-I- 1.0 -
0
,1\
(U 0.9 C
0 0.8 C.)
41)
L-0.7 o
06 c)
C.
C) 0.5 w 0.4 0.3 0.2 Areal Density Thickness (mg/cm ")
C-,
ATTACHMENT__ 3
Beta Scan Measurement MDC Calculation Painted Concrete Criteria - 2350/43-68 47 2 2 E:*.
. g.
9 S
- =.£.5599s8 b :=306 p6:= id =8.8 S,:= . d:=1.38 A :=-00 d
S.
-=4 ObservationInterval (seconds)
S6
.- Wd ObservationInterval (seconds)
.C
.:.e.*.
ger -g bb :=0 60 c1i= 0.1145' b i = 20.4 Counts in observationInterval C:= .
j A ~)
Ii- 100, C = 12.348
- r fg 60 MIDCR i
- =it ,.-
I O MlDCR i = 93.5 net counts per minute AfDCR I -b = 399.494 grovs counts per minute AtDCR i
=IR 23.4 net countsper minute in observation interval Gi A1DCsCan :=C*MDCRi MfDCScan-j 1-. 54M-W dpm per 100 cm
. I. .
SVAtSSIL Pago6-38to6.43 Eqoutn6-9&6k10. U4 NUREG-15.1.NM 6-1Sbo6-17 3 3/15/2005 ATTACHMENT 1+ . AL
where:
b = background countsper minute b,= backgroundcounts in observationinterval p = human performancefactor Wd = detector width in centimeters Sr = scan rate in centimeters persecond d = index ofsensitivity (Table 6.5 MARSSIM), 1.38 = 95% of correctdetection's, 60%false positives MDCSc,, = Minimum DetectableConcentrationforscanning(dpm/ 00 squarecentimeters)
C = constant used to convert MIDCR to MDC
- =instrumentefficiency (counts/emission)
, =source efficiency (emissions/disintegration)
A = instrumentphysicalprobe area (in square centimeters)
MARSSIAPM 6-3 w 613 Eq.6ww9 &A10. a ndEG10.P15 10617 4 3/15t2005 ATTACHEt'ENT N1--
Beta Scan Measurement MDC Calculation Painted Steel Criteria - 2350/43-68
- =.478 ce :=.5%599.5 b :=254 p: -as Wd -=8.8 Sr-2.2 d :=1.38 A :=100
- =4 ObservationInterval (seconds) Observation Interval (seconds)
Sr i ' r
£ :=* £. ,
b i:=+/-6 60 t'- 0. 1145 b; = 16.9 Counts in observation Interval I
U- =.
A, C = 12.348 IDCRi:= .d-q- 1oi AMDCR i = 8S.2 net counts per minute AMDCRj+b -339.i81 kross counts per minute AMDCR i
= 21.3 net coutnts per minute in observation interval ci MfDCscan:= C-ADCR i Scan 1.052.10J dpm per 100 cm MARSSL P.I 6s3831643 Eqmms 6-9& 6-10W.
Ard NThEGIR a
. Papa 15 to6.17 3 3/15/2005 ATTACHM ENT.-L- -
Beta Scan Measurement MDC Calculation Aluminum Siding & Ceiling Materials Criteria - 2350/43-68 ri::.478 £ :=.5.599 b:=295 p:-.S Fd := 8 8 S,:=2 . 2 d:= 1.3J8 A ,:=100
.. .. I.. , I .
IF'd
=4 ObservationInterval (seconds)
Sr °i ,S- Observation Interval (seconds)
Sr (b 60 60 i Er = 0. 1432 b i = 19.7 Counts in observation Interval C:= I A 'f
- i. 100s poO C = 9.878 AfDCR i := d o-i AIDCRi=91.8 net counts per minutte AIDCR i + b=386.799 gross counts per minwte AIDCR i
= 22.9 net counts per minute in observationinterval ci iItDCscan :=C-.4DCR i AIDCscan = 906.83 dpm per 100 cm MUSs[3t hag 6-38to6-3 Eqimi 6-9a 6.10 wd xVUG-ISO? Pam6135 to&1-t 3 3115/2005 ATTACMET ,EN%
Beta Scan Measurement MDC Calculation Concrete Block Criteria - 2350/43-68
-C :=.478 S:=.S-599 b:=341 p:=05 .I d:=8.8 Sr: 2. 2 d :=1.38 A :-100 I ..
Isd=4 1s If d Observation Interval (seconds)
Sr ObservationInterval (seconds)
. ~'
- Sr-Tf:-Crr s, bi: =-
60 e = 0. 1432 b i = 22.7 Counts in observation Interval C-=
A 100 C= 9.878
, 01 MDCR i = 98.7 net counts per minute MIDCR i + b = 439.697 gross counts per minute jMfDCR -
' =24.7 net counts per minute in observation interval ci A1DCscan :=C.fDCRi AIDCscan = 974.9721 dpin per 100 2n2 Parn 6-33 io641 MLARSS3%L Eqm6- & 6-; am w3EGm. p3. 6-ISU W6I' 3 3/15/2005 A3TACH NT200
Beta Scan Measurement MDC Calculation Unpainted Concrete Criteria - 2350/43-68 Sri:= 78 :=.SsS99 b:=306 p,:-0.5 Wd :=8.8 5:=2.2 d:=1.38 A:-IO00 S.d
_" = 4 01 hservation Interval (seconds) 'O t S.r Sr ObserationIt iterval (seconds) 6b-0i b *i:=-
60 Et=0.1432 -
b i = 20.4 Counts in observation Interval Cx- I
. - -~
I EiEsS lI00 ,':i0 C = 9.878 I1DCR i := Id )*_
_ ci JIIIL/LI i = YO.3 net counts per minute AfDCR i+b =399.49P gross counts per minute A1DCRi
= 23.4 net counts per minute in obseriation interval
°i AIDCscan := C-AMD CR j AMDC 5 jj = 923.58¢3 dpm per 100 cm2 MARSSM.Pars 6-3v 643 to Eqnfiam 6-&96-1.)AMi NLAEG-15.r.Pates645 ,sl 3 3t/15/^2005 ATTACHNIENT- Y - 4P
Beta Scan Measurement MDC Calculation Unpainted Steel Criteria - 2350143-68
- i:=.478 ei:=.5 599 b :=254 p =0.5 Wd:=8.8 Sr: 2 . 2 d :=1.38 A :=100
-f'd =4 ObservationInter val (seconds) O0i:=- ObservationIrwterval (seconds)
Sr
'- Sr I I ..
'b 0i I . . .. .
bi:=
60 et = 0.1432' b i = 16.9 Counts in observation Interval C:= I C e C= 9.878 AfDCR i:= 1 d- i 01 AMDCRi = 85.2 net counts per minil lte MDCR +-b =339.181 gross counts pe r minute APDCR
= 21.3 net counts per minut, ? in observation intervll oi JIDCscan:= C-A.DCR i AfiDCscan =841.457 dpm per 10J 2 AUSSt Pg. 6-38 6-43 M a 6-I 3W UREG4 .Pap. 6. 1 *,,
Eq O6-9 S61 3 V31512005 ATTACHvtE .
Beta Scan Measurement MDC Calculation Aluminum Siding Criteria - 2350,'43-68
£i:=.478 £5,:=.5.599 b:=295 p:=0.5 'Wd:=S. S.:=2.2 d:=J1.38 A =100 1 ,_ (seconds)-Wd
'd
- =4 Observation Intervata (seconds) o01 Observation I, Sr iterval(seconds)
S .
£t cr s ib *0' bij:= '6 60 Ft =0.i432 b i = 19.7 Counts in observation Interval C:= I
-1;Es 100 14 C= 9.878 AIDCR i:= 1 t d- I*_
,Oi AIDCR i = 91.8 net counts per minute MDCR + b = 386.799 oross couints per ?jqinute MDCR;
= 22.9 net counts per minute i n observation inten al 01i AIDCscan :=C-MDCRi MDCsca, = 90683 dnnt oer inn c 2
-1m_
MAASSLM P*4-633
-i 6-43 EqaSu 6-9A 6-10VW3NVEG.150. Pkps6-15I06 3 3/15/2005 A1TACHMENT L. B-
Switch Yard Control Bldg. - Painted Concrete Floor South West Corner
- 89" -
i7I 9 1o-\
T-5 3
ATTACHMENT s_- I
Switch Yard Control Bldg. - Painted Steel Graiting & Doors Door FLOOR PLAN 1KW>
Exterior Door ATTACHMENT_________L_
- 8+9 L 10 South West Corner L67 140" Ceiling 2
1 4Q 161" 34 55" 5 _
Aluminum Interior Walls & Ceiling ATTACWMENT 6 - 3
v 70' 59, li w L
4a8
]
South West Corner
'7
=
_ _ _ . .I .I_ . _ . . . . . . . . . .I . . .
6; l
rrngm Switch Yard Control Bldg. - Concrete Block SD hUlLED LI Dh"fi34 ATACHMENT * *iL. N-1 -
- 4 7- II 65 SW Corner I n
[.I w otr I Bl I I l UIol C Switch Yard Control Bldg. - Unpainted Concrete L]i L I15_1 El
- X8 ATTACHMENT 5 -_ _
2
Switch Yard Control Bldg. Roof I
83" 10 ATTAC;HMENT- . 6
South West Corner Switch Yard Control Building 95' I 23 85 ID0 AT'dCWIAENT _____
Approximate Scan Locations - 15 by -1 Square Meter Areas
-9
.4 14 CAN45
... f . ._uLo ATTACHMENT .. 62
... I FCAN-?
I YCAN46 = ___
,.Ml H', i r'M I -!
i! AWS 111-1-,
i,' t I
I
~jSCAN.4 h Scan Locations for Concrete Block - SYCB -1 Meter Square ea i
SCAN-I M5,kw-2, B-LL SCAN-3 cog
I ; T O 0:1 0 i T :
I I
i ; , !i 1 i1 t j - +i t !i 1
7 I I I i i SYCB - Aluminum Siding Scanning - I Square Meter Locations
,, 1S',e.,
hl :3--,--
(-OCP
WA Building Surface Survey Plan Survey Plan Summary Site. PENELEC SY - Western Sector Planner(s): BHB Survey Unit Name: Painted Concrete PS1-1 Comments: Switch Yard Control Building Area (m2 ): 45 Classification: 3 Selected Test: WRS Estimated Sigma (cpm): 34.5 (z.D)
DCGL (cpm): 4,607 Sample Size (N/2): 8 LBGR (cpm): 4,510 Estimated Conc. (cpm): 74 Alpha: 0.050 Estimated Power: 1.00 Beta: 0.100 Prospective Power Curve
_V I I I
'e 09 .I I A..
_ 0.8
- 0.7
. II.
r 0.6 V! 0.5 .I
?.r
_ 0.4 c I I c5 0.3 _y-_ P,
.I e0.2 I___ <1 E 0.1 O. LL 0 500 1000 15500 2000 2500 3000 3500 4000 4500 5000 F_
I-_
c Net Beta (cpm)
- Power - DCGL - - Estimated I Power
- LBSGR
- l-beta COMPASS v1.0.0 3/1412005 Page 1 C ol
Vuj Building Surface Survey Plan Contaminant Summary DCGLw Contaminant (dpm 100 cm')
Gross Activity 33,238 Beta Instrumentation Summary 2
Gross Beta DCGLw (dpml100 cm ): 33,238 Total Efficiency: 0.11 Gross Beta DCGLw (cpm): 4,607 ID Type - Mode Area (cm')
31 GFPC Beta 126 Contaminant Energy' Fractlon' Inst. Eff. Surf. Eff. Total Eff.
Gross Activity 187.87 1.0000 0.48 0.24 0. 145
' Average beta energy (keV) [NIA indicates alpha emission]
' Activity fraction Gross Survey Unit Mean (cpm): 380 i 29 (1-sigma)
Count Time (min): 1 Number of Average Standard MDC Material BKG Counts _ (cpm) Deviation (cpm) (dpml100 cm')
Concrete 31 306 34.5 609 2
CD-Page 2 L.UMPASS V1.U.U 311412005 3114/2005 Page 2
Li-
%W Building Surface Survey Plan Survey Plan Summary . __.
Site: PENELEC SY - Western Sector Planner(s): BHB Survey Unit Name: Painted Steel Surfaces PS1-2 Comments: Switch Yard Control Building Area (M 2 ): 19 Classification: 3 6/
Selected Test: WRS Estimated Sigma (cpm): 17.8 ( -Z2 )
DCGL (cpm): 4,607 Sample Size (N/2): 9 LBGR (cpm): 4,560 Estimated Conc. (cpm): 21.6 Alpha: 0.050 Estimated Power: 1.00 Beta: 0.100 Prospective Power Curve
- 0.9 - l P0. _
,0.8 - -
c 0., _ __ _ .
-0.5 - -
3 i
0.4
-. 0- - . -
_042 _0 _ _2 tP 0.1 _ _ _ .
0 500 1000 1500 2000 2500 3000 3500 4000 4500 5000 1-I T,
Net Beta (cpm)
- Power - DCGL - Estimated Power
- LBGR
- 1-beta COMPASS v0.0.0 3/1612005 Page 1 C 0Q
Building Surface Survey Plan Contaminant Summary _
DCGLw Contaminant (dpml100 cm')
Gross Activity 33.238 Beta Instrumentation Summary Gross Beta DCGLw (dpm/100 cm2): 33,238 Total Efficiency: 0.11 Gross Beta DCGLw (cpm): 4,607 ID Ty; )e Mode Area (cm21 31 GFIPC Beta 126 Contaminant Energy1 Fraction2 Inst. Eff. Surf. Eff. Total Eff.
Gross Activity 187.87 1.0000 0.48 0.24 0.1145
'Average beta energy (keV) [N/A indicates alpha emission]
2 Activity fraction Gross Survey Unit Mean (cpm): 276 t 12 (1-sigma)
Count lime (min): 1 Number of Average Standard MDC Material BKG Counts (cpm) Deviation (cpm) (dpml100 cm2)
Steel 20 254.4 17.8 557 F-,
"I V1.Q.0 (UMFASS V1.0.0 3/1612005 Page 2 COMPASS 311612005 Page 2
%V Building Surface Survey Plan Survey Plan Summary Site: PENELEC SY - Western Sector Planner(s): BHB Survey Unit Name: Aluminum Siding & Ceiling Materials PS1-3 Comments: Switch Yard Control Building Area (m2): 131 Classification: 3 ZS/Ce Selected Test: WRS Estimated Sigma (cpm): 36.8 (? e>@
DCGL (cpm): 5,863 Sample Size (N/2): 8 LBGR (cpm): 5,760 Estimated Conc. (cpm): -56.8 Alpha: 0.050 Estimated Power: 1.00 Beta: 0.100 Prospective Power Curve 51!
ZI Pt 0.8 I A.
A 4 I1 Q
.r Ia r.
- r II 0.2i st I G.i 2
i i
)00 0 1000 2000 3000 4000 5000 6000 C)
Net Beta (upus)
- Power - DCGL - Estimated Power
- LBGR
- l-beta COMPASS vI.0.0 3/1512005 Page 1 cog 2
'@/ Building Surface Survey Plan Contaminant Summary DCGLw Contaminant _
(dpml100 cm')
Gross Activity 33,238 Beta Instrumentation Summary Gross Beta DCGLw (dpm/100 crn'): 33,238 Total Efficiency: 0.14 Gross Beta DCGLw (cpm): 5,863 ID Type Mode Area (cm')
31 GFPC Beta 126 Contaminant _ Energy' Fraction' Inst. Eff. Surf. Eff. Total Eff.
GrossActivity 187.87 1.0000 0.48 0.29 0.1379
' Average beta energy (keV) [N/A indicates alpha emission]
-'Activityfraction Gross Survey Unit Mean (cpm): 238 +/- 13 (1-sigma)
Count Time (min): 1 Number of Average Standard MDC Material BKG Counts (cpm) Deviation (cpm) (dpm/100 cm2)
Aluminum 2 16 294.8 36.8 470 I I 11-EOMPASS v .0.0O 3/15/2005 Page 2
%W Building Surface Survey Plan Survey Plan Summary Site: PENELEC SY - Western Sector Planner(s): BHB Survey Unit Name: Concrete Block PS2-1 Comments: Switch yard Control Building Area (mi2 ): 41 Classification: 3 /0 Selected Test: WRS Estimated Sigma (cpm): 37.7 (2RI5)
DCGL (cpm): 5,863 Sample Size (N/2): 8 LBGR (cpm): 5,750 Estimated Conc. (cpm): -34.5 Alpha: 0.050 Estimated Power: 1.00 Beta: 0.100 Prospective Power Curve 1 _
N 0.9 _
II'I
-cZ.
Q 0.I
- -5A rl+,I e
i s6 0,1 5o O.
t.
C_
k.r ooo 0 1000 2000 3000 4000 5000 6000 .r Net Beta (epm)
- Power - DCGL - - Estimated Power
- LBGR
- l-beta COMPASS v1.0.0 3114/2005 Page 1 C1K
Building Surface Survey Plan Contaminant Summary DCGLw Contaminant _(dpml100 cml)
Gross Activity 33,238 Beta Instrumentation Summary 2
Gross Beta DCGLw (dpm/100 cm ): 33,238 Total Efficiency: 0.14 Gross Beta DCGLw (cpm): 5,863 ID Type __ _ Mode Area (cm2) 31 GFPC Beta 126 Contaminant Energy' Fraction2 InsL Eff. Surf. Eff. Total Eff.
Gross Activ"y 187.87 1.0000 0.48 0.30 0.1432
'Average beta energy (keV) [N/A indicates alpha emission]
2 Activity fraction Gross Survey Unit Mean (cpm): 306 +/- 35 (1-sigma)
Count Time (min): 1 Number of Average Standard MDC Material BKG Counts (cpm) Deviation (cpm) (dpml100 cm')
Concrete Block 20 340.5 37.7 503 i'Ii CD cL vl.0.0 COMPASS 311412005 Page 2 COMPASS v1.0.0 3/14/2005 Page 2
M
/WBuilding Surface Survey Plan Survey Plan Summary Site: PENELEC SY - Western Sector Planner(s): BHB Survey Unit Name: Unpainted Concrete PS2-2 Comments: Switch Yard Control Building Area (M2): 24 Classification: 3 A/-'
Selected Test: WRS Estimated Sigma (cpm): 34.5 (z-91)
DCGL (cpm): 5,863 Sample Size (N/2): 8 LBGR (cpm): 5,760 Estimated Conc. (cpm): 0 Alpha: 0.050 Estimated Power: 1.00 Beta: 0.100 Prospective Power Curve
_ 1
! 0.9 A.
, 0.8
- 0.7 5.,
t 0.6
- 0.5
_ 0.4 0-_
-5 0.3 e6 0.2
- 0.1 A.
0 1000 2000 3000 4000 5000 6000 it Net Beta (cpm) ='
- Power - DCGL - Estimated Pcower
- LBGR
- I-beta COMPASS vA.0.0 3/1512005 Page 1
( I)
'M§ Building Surface Survey Plan Contaminant Summary DCGLw 2
Contaminant (dpml100 cm )
Gross Activity 33,238 Beta Instrumentation Summary Gross Beta DCGLw (dpm/100 cm'): 33,238 Total Efficiency 0.14 Gross Beta DCGLw (cpm): 5,863 ID Type Mode Area (cm')
31 GFPC Beta 126 Contaminant Energy' Fraction" Inst. Eff. Surf. Eff. Total Eff.
GrossActivity 187.87 1.0000 0.48 0.30 0.1432
' Average beta energy (keV) [NIA indicates alpha emission]
2'Activity fraction Gross Survey Unit Mean (cpm): 306 +/- 35 (1-sigma)
Count Time (min): I Number of Average Standard MDC Material ___________ BKG Counts (cpm) Deviation (cpm) (dpm/100 cm')
Concrete 31 306 34.5 478 r
CD I-4_
MPASS 3_1 _ Pa-e_
COMPASS v1.0.0 3/15/2005 Page 2
%V Building Surface Survey Plan Survey Plan Summary Site: PENELEC SY - Western Sector Planner(s): BHB Survey Unit Name: Unpainted Steel PS2-3 Comments: Switch Yard Control Building Area (m2): 68 Classification: 3 /
Selected Test: WRS Estimated Sigma (cpm): 20.3 t()
DCGL (cpm): 5,863 Sample Size (N/2): 9 LBGR (cpm): 5,810 Estimated Conc. (cpm): 40.6 Alpha: 0.050 Estimated Power: 1.00 Beta: 0.100 Prospective Power Curve ZI
_A 0.9
. 0.8 0.7 4
t 0.6 A 0.5
- e. 0.4 I __
-S 0.3 60.2 I I
- 0.1 I
c I it O
.~
0 1000 2000 3000 4000 5000 6000 r'1 Net Beta (cpm)
- Power - DCGL - Estimated Power
- LBGR
- l-beta COMPASS v1.0.0 3/1512005 Page 1 CI-Z
Building Surface Survey Plan Contaminant Summary DCGLw 2
Contaminant (dpml100 cm )
Gross Activity 33,238 Beta Instrumentation Summary 2
Gross Beta DCGLw (dpm/l 00 cm ): 33,238 Total Efficiency: 0.14 Gross Beta DCGLw (cpm): 5,863 ID Type Mode _
Area (cm')
- - 31 GFPC Beta 126 Contaminant Energy' Fraction" Inst. Eff. Surf. Eff. Total Eff.
Gross Activity 187.87 1.0000 0.48 0.30 0.1432
' Average beta energy (keV) [N/A indicates alpha emission]
' Activity fraction Gross Survey Unit Mean (cpm): 295 +/- 20 (1-sigma)
Count Time (min): 1 Number of Average Standard MDC Material .
BKG Counts (cpm) Deviation (cpm) (dpm/100 cm') _
Steel 20 254.4 17.8 437 R1-i LU C-I
.I.
COMPASS vl.O.03120 3115/2005 Page 2
N
%I Building Surface Survey Plan Survey Plan Summary Site: PENELEC SY - Western Sector Planner(s): BHB Survey Unit Name: Aluminum Siding Exterior )5- 4 Comments: Switch Yard Control Building Area (m2): 63 Classification: 3 &/Cr Selected Test: WRS Estimated Sigma (cpm): 36.8 ( zx')
DCGL (cpm): 5,863 Sample Size (N/2): 8 LBGR (cpm): 5,760 Estimated Conc. (cpm): -56.8 Alpha: 0.050 Estimated Power: 1.00 Beta: 0.100 Prospective Power Curve
!k it
-e
-Ra 7.
ZI-e_
Gqi.
o~sl
-1 000 0 1000 2000 3000 4000 5000 6000 Net Beta (cpm)
- Power - DCGL - -Estimated Power
- LBGR
- 1-beta COMPASS v1.0.0 3/15/2005 Page 1 CW?3
%P WJ Building Surface Survey Plan Contaminant Summary DCGLw Contaminant (dpml100 cm2)
Gross Activity 33,238 Beta Instrumentation Summary Gross Beta DCGLw (dpml100 cm'): 33,238 Total Efficiency: 0.14 Gross Beta DCGLw (cpm): 5,863 2
ID Type Mode Area (cm )
31 GFPC Beta 126 2
Contan iinant Energy' Fraction Inst Eff. Surf. Eff. Total Eff.
Gross Axctrvlty 187.87 1.0000 0.48 0.30 0.1432
' Average beta energy (keV) [NIA indicates alpha emission]
2Activity fraction Gross Survey Unit Mean (cpm): 238 +/- 13 (1-sigma)
Count Time (min): 1 Number of Average Standard MDC Material _ _ _ _
BKG Counts _
(cpm) Deviation (cpm) (dpm/100 cm")_
Aluminum 2 16 294.8 36.8 470
- 2.t1E+02 3.06E+02 Slama 2.69E+01 3.45E+01 r.,-771, rt4 f-,A ENT_ _q__. LI
- 1. Hiave suff~oentrrluveys a., povt re ndiltror. cha aervizetn etc) be"r obtaln ditha Surveyu ~ X 2.Do the.surve'y (hurri Quesion 1) deonror erwavy unift wi1 modt hkety pate thne istcn thne FS57 X
- 3. Is tinephnysic wort (ie.. refiediaborn A hounie"ep~) in or earound the 3arvoy urut rofirpW*t. X 4 [ia"ea tooft. Aon-Immanin!
- a~nd meronnl matrialmnot!needed to Wenorm oti Fss been reimoved? X
- 5. Arvirntrnf eyutaca reaieyfe floedbs( ii oceedn.mtllna i7X
- 9. hae" thne Surfoce Mjeasuremeint Tea Areas (SMTA) dala been collected? (Refer to Exctnbf2 for irtrtrclion&) X
- 10. Are thnemvurey suraces esIy acceeeWnl? (No scaffolin. hnigh reedh etc. is needed to Werorm tire F'SS) x II. Is 16A110adequate to pevtrforthneF557 12.4 'a"ous Ynlr*I ateoI perfcrm the FSS7 (Evaluate potential flall& trip hauflds, Confined spaces. etc.) x
- 13. Haye vhoftcracr" been ltrken stno1rr ti ovemall ertm." c4the "*?1 14 Havea all une ato~drVcorndhtorn been resolved?
SUMMARY
FOR SR-0195 SR-0195 was issued to obtain radiological survey and sampling data to ensure Final Site Survey activities are complete. The survey unit covered under this SR is PS1-1, 2, 3. The SR required the following radiological measurements.
- Surface scan measurements using a 43-68 gas flow proportional counter (GFPC) or equivalent. Survey techniques will be lAW the SR.
- Surface static measurements using a 43-68 gas flow proportional counter (GFPC) or equivalent. Survey techniques will be lAW the SR.
- For PS1-1 a total of 10 Static Measurement locations were provided for measurements to be taken. SNEC Calculation Sheet using COMPASS' program required 8 samples to be taken. For PS1-2 a total of 10 Static Measurement locations were provided for measurements to be taken. SNEC Calculation Sheet using 'COMPASS" program required 9 samples to be taken. For PS1-3 a total of 10 Static Measurement locations were provided for measurements to be taken. SNEC Calculation Sheet using 'COMPASS' program required 8 samples to be taken.
- QC Repeat Measurements: A minimum of 5% of all surface scan and static measurements were re-performed using identical methodology.
- Additional sampling/surveys were not performed.
- 1. Summary of Results A. Surface Scan Measurements (GFPC Detector)
A 100% surface scan was required of all accessible areas in certain locations, lAW the SR. A total of 18.89% of this Class 3 area was surveyed, which is well within design basis.
Results: No areas indicated activity above the action level of >600 GCPM (gross counts per minute)
B. Surface Static Measurements For PS1-1, ten (10) static measurements were obtained. For PS1-2, ten (10) static measurements were obtained. For PS1-3, ten (10) static measurements were obtained. These locations were statistically spaced based on a random starting point due to the lack of noticeable elevated activity during final post remediation scan/static surveys.
Results: No areas indicated activity above the action level of >600 GCPM (gross counts per minute).
Page I of 2 6!15/2005
SURVEY REQUEST CONTINUATION SHEET SR NUMBER 1 0195 1 AREA/LOCATION l PSI-1, 2,3 SPECIFIC SAMPLING/SURVEY INSTRUCTIONS OR COMMENTS
- 2. Quality Control (QC) Measurements and Comparisons
- Repeat Scan measurements and Repeat Static measurements were performed and met the applicable acceptance criteria established in Section 4.6 of E900-IMP-4520.04. QC scan measurements were repeated for 18.55% of the area scanned. QC static measurements were repeated for 10.00% of static measurements.
- 3. Exceptions and Discrepancies
- None.
- 4. Special Note(s)
- As stated previously, as this is a Class 3 area, scan coverage of approximately 10% in addition to the thirty (30) static measurement point readings will suffice to show due diligence in survey technique for release of the site for unrestricted use.
A, CAILU QL~LLI rLLOs Print/Signature Date Page 2 of 2 6/15/2005
SURVEY REQUEST CONTINUATION SHEET SR NUMBER l 0203 l AREA/LOCATION l PS2-1, 2, 3, 4 SPECIFIC SAMPLING/SURVEY INSTRUCTIONS OR COMMENTS RESULTS
SUMMARY
FOR SR-0203 SR-0203 was issued to obtain radiological survey and sampling data to ensure Final Site Survey activities are complete. The survey unit covered under this SR is PS2-1, 2, 3, 4. The SR required the following radiological measurements.
- Surface scan measurements using a 43-68 gas flow proportional counter (GFPC) or equivalent. Survey techniques will be IAW the SR.
- Surface static measurements using a 43-68 gas flow proportional counter (GFPC) or equivalent. Survey techniques will be IAW the SR.
- For PS2-1 a total of 10 Static Measurement locations were provided for measurements to be taken. SNEC Calculation Sheet using "COMPASS' program required 8 samples to be taken. For PS2-2 a total of 9 Static Measurement locations were provided for measurements to be taken. SNEC Calculation Sheet using 'COMPASS" program required 8 samples to be taken. For PS2-3 a total of 18 Static Measurement locations were provided for measurements to be taken. SNEC Calculation Sheet using 'COMPASS" program required 9 samples to be taken. For PS2-4 a total of 10 Static Measurement locations were provided for measurements to be taken. SNEC Calculation Sheet using 'COMPASS' program required 8 samples to be taken.
- QC Repeat Measurements: A minimum of 5% of all surface scan and static measurements were re-performed using identical methodology.
- Additional sampling/surveys were not performed.
- 1. Summary of Results A. Surface Scan Measurements (GFPC Detector)
A 100% surface scan was required of all accessible areas in certain locations, IAW the SR. A total of 14.27% of this Class 3 area was surveyed, which is well within design basis.
Results: No areas indicated activity above the action level of > 700 GCPM (gross counts per minute). In the survey area PS2-3 (unpainted steel roof) the action level is > 600 GCPM. No areas exceeding this level found.
Page 1 of 2 6/115/2o5
SURVEY REQUEST CONTINUATION SHEET SR NUMBER l 0203 IAREA/LOCATION I PS2-1, 2,3,4 SPECIFIC SAMPLING/SURVEY INSTRUCTIONS OR COMMENTS B. Surface Static Measurements For PS2-1, ten (10) static measurements were obtained. For PS2-2, nine (9) static measurements were obtained. For PS2-3, eighteen (18) static measurements were obtained. For PS2-4, ten (10) static measurements were obtained. These locations were statistically spaced based on a random starting point due to the lack of noticeable elevated activity during final post remediation scan/static surveys.
Results: No areas in area PS2-3 indicated activity above the action level of > 600 GCPM (gross counts per minute). No areas in area PS2-1, PS2-2, or PS2-4 indicated activity above the action level of
> 700 GCPM
- 2. Quality Control (QC) Measurements and Comparisons
- Repeat Scan measurements and Repeat Static measurements were performed and met the applicable acceptance criteria established in Section 4.6 of E900-IMP-4520.04. QC scan measurements were repeated for 6.70% of the area scanned. QC static measurements were repeated for 8.51% of static measurements.
- 3. Exceptions and Discrepancies
- Total of 0.65 meters of the roof grid to be surveyed inaccessible due to safety concerns..
- 4. Special Note(s)
- As stated previously, as this is a Class 3 area, scan coverage of approximately 10% will suffice to show due diligence in survey technique for release of the site for unrestricted use.
g?
A6 Print/Signature ZY/a bate Page 2 of 2 6/1152005