ML073111375

EP-FH-102, Nasa, Survey Unit Release Record

ML073111375
Person / Time
Site:	Plum Brook
Issue date:	10/30/2007
From:	US National Aeronautics & Space Admin (NASA)
To:	NRC/RGN-III/DNMS/DB
References
EP-FH-102
Download: ML073111375 (21)

Text

Description Survey Unit Release Record Design # Survey Unit #(s) acquisition of survey measurements.

5) Instrument efficiency determinations are developed in accordance with the BSVLVS-002, WEP 05-006, these determinations are appropriate for the types of radiation involved and the media being surveyed.

CS-0911 EP-FH- 102 FH- 102 1) Embedded Pipe (EP) Survey Unit FH-102 meets the definition of embedded pipe for Plum Brook Reactor Facility (PBRF). 2) EP FH-102 is a Class 1, Group 3.1 survey unit as per the PBRF Final Status Survey Plan (FSSP) and Technical Basis Document (TBD)-06-004.

3) Surveys in EP FH-102 were performed using a scintillation detector optimized to measure gamma energies representative of Cs-137. Sample #EP 3-6 fiom Survey Request (SR)-13 was referenced for this decision.

4) Survey Instructions for this survey unit are incorporated into and performed in accordance with (IAW) the Babcock Services Incorporated (BSI)/LVS-002, Work Execution Package (WEP)05-006. Survey instructions described in this document constitute "Special Methods" and the survey design used in the Revision # Original - Page 1 of 3 I FSS Design

1. EP FH- 102 I Revision # Original I ~age2of3 1 I Survey Unit: FH- 102 I 1.1 The subject pipe system is the 4" drain line system for the Fan House (FH). The FH floor drain system consists of two major branches that both tie into the header and sump that services the Hot Pipe Tunnel (HPT).

The system was accessed at four different locations on the - 12 ft elevation of the Fan House. The purpose of the system was to convey water from the floor drain openings on the -12 ft elevation of the FH to a sump located on the -1 2' elevation of the HPT. 1.2 EP FH-102 consists of approximately 11 3 feet of drain system piping. Survey Design Information 2.1 EP FH-102 was surveyed IAW Procedure

1. BSI/LVS-002.

2.2 100% of the 4" ID pipe was accessible for survey. The accessible 4" ID pipe was surveyed by static measurement at one foot increments, for a total of 1 13 survey measurements.

2.3 Surface area for the 4" ID piping is 973 cm2 for each foot of piping, corresponding to a total 4" ID piping surface area of 109,935 cm2 (1 1.0 m2) for the entire length of (1 13') of 4" piping. Survey Unit Measurement Locations/Data 3.1 Pipe interior radiological survey forms are provided in Attachment 2 of this release record. Survey Unit Investigations/Results 4.1 None Data Assessment Results 5.1 Data assessment results are provided in the EPBuried Pipe (BP) Survey Report provided in Attachment

1. 5.2 All measurement results are less than the Derived Concentration Guideline Level (DCGL) for radionuclide specific EP that corresponds to the 1 mredyr dose goal established in Table 3-3 of the FSSP. 5.3 When implementing the Unity Rule, provided in Section 3.6.3 of the FSSP, and applying the Nuclide Fraction (NF), provided in TBD-06-004, the survey unit that is constituted by EP FH- 102 passes FSS. 5.4 Background was not subtracted from the survey measurements and the Elevated Measurement Comparison (EMC) was not employed for this survey unit.

5.5 Statistical Summary Table - Statistical Parameter FSS Design # EP FH-102 Documentation of evaluations pertaining to compliance with the unrestricted use limit of 25 mredyr and dose contributions from Embedded Pipe and radionuclides contributing 10% in aggregate of the total dose for both structural scenarios and soils. 6.1 A review of the survey results has shown that the dose contribution for EP FH-102 to be less than 1 mredyr. The dose contribution is estimated to be 0.022 mrernlyr based on the average of the actual gross counts. Attachments Attachment 1 - BSI EPIBP Survey Report Attachment 2 - Pipe Interior Radiological Survey Form Attachment 3 - DQA Worksheet Attachment 4 -Disc containing RR for EP FH-102 & Spreadsheet Survey Unit: FH-102 Revision # Original Page 3 of 3 SECTION 7 ATTACHMENT 1 PAGE(S)

C%kw BSI EPIBP SURVEY REPORT Pipe ID Survey Date Survey Time Pipe Size DCGL (dpmIlOOcrn2)

Plpe Area lmrated by Survev Dats tm') Routine Survey QA Survey EP FH-102 02-Nov-06 08: 13 -- 4" 3.79E+06 11 .O X Survey Location 2350-1 # Detector-Sled

1. Detector Efficiency Fan House 203438 44-1 59 238369 1101 0.00019 Survey Measurement Results Total Number of Survey Measurements Number of Measurements sMDC Number of Measurements Above 50% DCGL PIP ~rea lnmrparated by ~e-r Emflency (In cm2) Field BKG (cprn~ Field MDCRcprn)

Nominal MDC (dprmlWcm2) 113 107 0 973 5.1 10.8 9,453 ACTIVITY VALUES NOT BACKGROUND CORRECTED RP Engineer ( Date EP FH-102 4" Pipe TBD 06-004 Group 3.1 EP FH-102 4" Pipe TBD 06-004 Group 3.1 EP FH-102 4" Pipe TBD 06-004 Group 3.1 EP FH-102 4" Pipe TBD 06404 Group 3.1 SECTION 7 ATTACHMENT 2 2 PAGE@)

BSIlLVSPipeCrawler-002 Revision 4 Pipe Interior Radiological Survey Form Date: I I lo~/06 Time: 081 3 Pipe ID#: /f - 1 0 2 Pipe Diameter:

4' Access Point Area: fH- ( Building:

f&J Mbus~ Elevation: - 12' System: FLiZ. b~?~l, Type of Survey Investigation Characterization Final Survey .x Other Gross C06O cs L/ Detector ID# 1 Sled ID# 49 - !.?23WL9 1 10 1 Detector Cal Date: ~/S/OL Detector Cal Due Date:

9/</& 7 Instrument:

7.3 5-0-/ Instrument ID #: ZOwZl? Instrument Cal Date:

7/$/0 6 Instrument Cal Due Date:

7/</0 7 From the Daily Pipe Survey Detector Control Form for the Selected Detector Background Value 5 1 cpm MDCRstatic 1 0 9 CPm Efficiency Factor for Pipe Diameter 0.000 \ q (fiom detector efficiency determination)

MDCstatic 4453 d~m/ \ 00 cm2 Is the MDCsktic acceptable?

@ NO (if no, adjust sample count time and recalculate MDC%,tic, Comments:

Y 17vGf -. P~b~rlcd A. IS 4 D~P. F23-6 Techcian Signature Pipe Interior Radiological Survey Package Page 1 of Attachment 3, Page 1 BSIlLVSPipeCrawler-002 Revision 4 Pipe Interior Radiological Survey Form (Continuation Form)

Date: I 1 /OZ[O L Y Pipe ID#: f1-t - loz Pipe Diameter: Access Point Area:

FH- f Building:

pw WSE Elevation:

-1 21 System: C7 b1-205 ' Package Page 2- of - - Attachment 3, Page 2 BSIfLVSPipeCrawler-002 Revision 4 Pipe Interior Radiological Suwey Form Date: /l/~z 13 b Time: /os+ Pipe ID#: FH - /O 2 Pipe Diameter:

9 " Access Point Area:

f H - 2 Building:

F)ki) &US E Elevation:

~!2' System: PLR 3Rlt/ rype of Survey Investigation Characterization Final Survey )( Other Gross C06O Cs / Detector Cal Date: ?/J-/o 0 Detector Cal Due Date:

Instrument:

23 TO- / Instrument ID #: 20Wg- kc Instrument Cal Date:

7/~/06. Instrument Cal Due Date:

7/7/47 From the Daily Pipe Survey Detector Control Form for the Selected Detector Background Value cpm MDCRstatic

/O,c CPm Efficiency Factor for Pipe Diameter 0 ,000 \q (from detector efficiency determination)

MDcstatic 9453 dpm/ 100 cm2 Is the MDCsbtic acceptable?

@ NO (if no, adjust sample count time and recalculate MDC%tatic)

Comments:

POST grL3/zo f~s o R~T~ E73- 6 ?iw"77@? postmod Li4 IS ?/ZC3P Technician Signature Pipe Interior Radiological Survey Package Page 1 of Attachment 3, Page 1 BSYLVSPipeCrawler-002 Revision 4 Pipe Interior Radiological Survey Form Date: Pipe ID#: Building:

Time: I Pipe Diameter:

Elevation: - 12' Access Point Area:

System: Type of Survey Investigation Characterization Final Survey Other 0 Gross C06O a 4 Detector ID# 1 Sled ID# +$-I Y-3 83~ 4 / /6 / Detector Cal Date: Detector Cal Due Date: Instrument:

Zc@-1 Instrument ID #: Instrument Cal Date: '7/~/0 6 Instrument Cal Due Date: From the Daily Pipe Survey Detector Control Form for the Selected Detector Background Value 5- ( cpm MDCktatic 10 *8 CP~ Efficiency Factor for Pipe Diameter 6.0 0 0 14 (from detector efficiency determination)

MDCstatic 4453 dpd - \ 03 cm2 Is the MDCSbtic acceptable?

@ NO (if no, adjust sample count time and recalculate MDCR,tatic)

Comments: - I YDZO RESVRUCC( E?3 -6 i7~7-/~ $'as~-a 32 rs TWE [I ~ZO P* Technician Signature Pipe Interior Radiological Survey Package Page 1 of 2, Attachment 3, Page 1 BSI/LVSPipeCrawler-002 Revision 4 Pipe Interior Radiological Survey Form (Continuation Form) Date: r lloz/o~ Pipe ID#: ~Itf - 2 Pipe Diameter:

Access Point Area: Building:

p A Elevation:

System: FL R DEW, Package Page 2 of 5 Attachment 3, Page 2 BS1,LVSPipeCrawler-002 Revision 4 Pipe Interior Radiological Survey Form Date: 1 1 /OL/OL Time: 134s Pipe ID#: F /-f - / OZ Pipe Diameter:

It Access Point Area: f H 4 Building:

r+ Elevation:

-- IZ' System: %lt DFU Type of Survey Investigation Characterization Final Survey $ Other - Gross C06O Cs fl Detector ID# / Sled ID# 44. / sj 23 l%3 16 4 Detector Cal Date: 415 /6 6 Detector Cal Due Date: 'p/ S/O 7 'lol Instrument:

23 r0 -/ < Instrument ID #: *34%$? Instrument Cal Date: 7/5/0 6 Instrument Cal Due Date: ~/s/o 7 From the Daily Pipe Survey

~etector Control Form for the Selected Detector Background Value 5 . 1 cpm MDCkkfic /0*8 CPm Efficiency Factor for Pipe Diameter 6. Q 0 a \ q (from detector efficiency determination)

MDCstatic

'i 4.6 3 dpd lop cm2 Is the MDCsbtic acceptable?

@ No (if no, adjust sample count time and recalculate MDCR,tBtic)

Comments:

POST GY~M RESIJRUEY EP~-(", Pazmw LS DlzsP - Y Technician Signature Pipe Interior Radiological Survey Package Page 1 of 2 Attachment 3, Page 1 BSYLVSPipeCrawler-002 Revision 4 Pipe Interior Radiological Survey Form (Continuation Form) Date: / ( 16~10 t Pipe ID#: ~(4 - (b 5 Pipe Diameter:

4 Access Point Area: F H -4 Building: ,C-&l\l fi S r- Elevation:

-1 t' System: FLR 1312A-fAJ Package Page L of 5 .I- SERVICES INC. Attachment 3, Page 2

SECTION 7 ATTACHMENT 3 I PAGE(S)

'A w Page 1 of 1 DQA Check Sheet Design # Survey Unit # EP FH-102 Preliminary Data Review' EP FH-102 Revision # Answers to the following questions should be fully documented in the Survey Unit Release Record

1. Have surveys been performed in accordance with survey instructions in the Survey Design?

2. Is the instrumentation MDC for structure static measurements below the DCGLw for Class I and 2 survey units, or below 0.5 DCGLW for Class 3 survey units? 3. Is the instrumentation MDC for embeddedlburied piping static measurements below the DCGLw ? 4. Was the instrumentation MDC for structure scan measurements, soil scan measurements, and embeddedlburied piping scan measurements below the DCGLW, or, if not, was the need for additional static measurements or soil samples addressed in the survey design? 5. Was the instrumentation MDC for volumetric measurements and smear analysis < 10% DCGLw ? 6. Were the MDCs and assumptions used to develop them appropriate for the instruments and techniques used to perform the survey? 7. Were the survey methods used to collect data proper for the types of radiation involved and for the media being surveyed?

8. Were "Special Methods" for data collection properly applied for the survey unit under review?

9. Is the data set comprised of qualified measurement results collected in accordance with the survey design, which accurately reflects the radiological status of the facility?

Original Graphical Data Review I I I 3. Have other graphical data tools been created to assist in analyung the data Yes X X X X X No NIA X X X SECTION 7 ATTACHMENT 4 1 DISC