ML073170335

Survey Unit Release Record EP RD-1

ML073170335
Person / Time
Site:	Plum Brook
Issue date:	11/12/2007
From:	US National Aeronautics & Space Admin (NASA), John H. Glenn Research Ctr at Lewis Field
To:	NRC/RGN-III/DNMS/DB
References
EP RD-1
Download: ML073170335 (14)

Text

f Survey Unit Release Record Dmign # 1 EP-RD-1 Revision # Page 1 of 3 SUWWJ'u d #($I RD-1

1) Embedded Pipe (EP)Survey Unit RD-1 meets the definition of embedded

' pipe fm Plum Braak R W F d t y (PBW).

2) EP RD-1 is a Class 1, Group 1 survey unit as per the PBRF Final Status Survey Plan (FSSP) and T & d Basis m t (TBDj-06-OM.

3) Surveys in EP RD-1 were ~ o m using d a scintil1ation detector optimized to measure gamma energies representative of CodO. Sample #EP 3-1 from I

S w e y Request (SR)-I3 was referend for this decision. I

4) Survey Instructions for this survey unit are incorporated into and pwf&

in accordance with @AW)the Babcack Services Incorporated (BST)/LVS-002, Work Execution Pack-age (WEP)05-006. Survey ~ c t i o l ndesai'bad s itn t h i s Description document con%titu&"Special Methm3s" and the survey design used in the acquisition of m e y measurements.

5 ) h-mt eficiency d e t d t i o n s are develupd in accordance with the BSZILVS-002, WEP 05-006, these determinations are appropriate for the typw of radiation involved and the media being surveyed.

FSS Design # EP RITl Revision # Original Page 2 of 3 Survey Unit: RD-1 1.0 WistarylDescription 1.1 The subject pipe system is a 4" service ring return line located on the -27' el. of the Rx building.

1.2 EP RD-1 consists of 4" diameter piping that is approximately 17 feet in length.

2.0 Survey Design information 2.1 EP RD-1 was suryeyed IAW Procedure #BSULVS-002.

2.2 1W/oofthe4"IX)gipewasaccessib~efor~ey.Theacce-ssible4"ID pipe was surveyed by static measurement at one foot increments, for a total of 17 survey measurements, Surface area for the 4" ID piping is 973 cm2for each foot of piping*

cotresponding to a total 4" ID piping surface area of 16,539 cm2(1.7 rn2) for the entire length of (approxhakly 17') of 4" piping.

3.0 Survey Unit Measurement LacatiMata 3.1 Pipe interior radiological survey forms are proviM in Attachment 2 of t h i s release record.

4.0 Survey Unit InvestigstiodResults 4.1 None 5.0 Data Assessment Results 5.1 Data assessment results are provided in the EPlBuried Pipe (BP)Survey Report provided in Attachment I.

5.2 All measurement results are less than the Derived Cancentdon Guideline Level (DCGL) for radionuclide specific EP that corresponds to the I d y r dose goal established in Table 3-3 ofthe FSSP.

%en implementing the Unity Rule, provided in Section 3 3of the FSSP,and applying the Nuclide Fraction w), provided in TBD-06-004, the survey unit that is constituted by EP RD- 1 passes FSS.

Background was not subtracted from the survey measurements.

Three (3) of the seventeen (17)measurements performed ume found to have unitized values exceeding the I mremlyr DCGL. Two of these measurements were contiguous sections of piping, as such they were averaged and evaluated as per Table 33-6 of the PBRF FSSP. The elevated data were evaluated against the Elevated Measurement Comparison (EMC) and Elevated Measurement Test (EMT) criteria in accordance with the guidance in PBRF FSSP and p r o d w e CS-09. The calculated EMT result was detmnhed to bc less than one, indicating that the survey unit passed the test.

Page 3 of 3 Survey unit:RD-1 Statistical Parameter 10 Documentation of evaluations pertaining to compliance with the unrestricted use limit of 25 m d y r and dose contributions h m Embedded Pipe and radionuclides contributing lo'?% in aggregah offhe total dose for both structural scenarios and soils.

6.1 A review of the survey results has shown that the dose contibution far EP RD- 1 to be less than 1 mredyr. The dose contribution is ehmkd to be 0.542 mrem/yr based on the average of the actual gross counts measured.

7.0 Attachments Attachment I - BSI EPmP Survey Report Attachment 2 - Pipe Xnkrior Radiological Survey Fom Attachment 3 - DQA Worksheet Attachment 4 -.Disc c o a RR for EP D l & Spreadsheet I

SECTION 7 ATTACHMENT 1 3 PAGE@)

<am@ BSI EPIBP SURVEY REPORT Plpe ID EP RD-1 Survey Loeation PPH Resrn Pit -5' el.

survey Date , 1wum 2550-1 # ma83 S u ~ Tyh e 08:14 D&&or-Sled # 4 C ? 92383691104 Pipe Size -or ERidency 0.0002 mGltmnw I 2.41 E m mk--bv-m-vennpl 1.7 F W BKGcm 12.7 q Routme X Fldd MM=Rr- 15 3 MsUrreY N m h l MOC -( 4,049 d

Suruey kieaarrement R M t

Total N u m k of S u m M w r e m e n t s 1 17 Number of Mmswms >MDC Number of MemurementsAbove 50%DCGL 17 8

I b h b r d -ts Above OCGL 3 Mean 0.5424 Median 0.2617 Standard D&m 0.3704 Wmwn 1.21 70 Minimum

.- 0.1104 Survey Techhician(s)

I COMMENTS ACTMTYVALUES NOT BACKGROUND CORRECTED RP Engineer I Date lC- ? -07

EF RD-t 4" Pipe TBD 06-004 Group 1 u

E i

Eg gcpm ncpm Cod0 U c W C&D d M y Cs137 adlvky Eu-162 actMty Eu-164 actMty Nb-84 acwity &-1OBm activity a (thldpl) (dPnJlOOrm2) (dwlwd) (dpnY10hz) - (41WloOrm2) [dmooani] (d~~OOEnR) 5 D

r I 36

---

38 180,000 I 8I502 "-..- 733 , 17,551 4,686 . -. 540 129

---

0.110 2 47 957 22,814 . 6,091 7,647..--

- 705 885 .

168 2K:Tfl 0.144 1,854 44,386 10,498 li,7~- -

- 1,215 1,385 290 3%

[ 0.248 53%

1,874 44,852 , 11,924- 1,380 329 0,202 44,713 . 7,772 42,4f 5 , 11,276- A , 1,305 -312 Q.2B7 52.422 2,078 40,728 I I S 220 4--

1,530

- -3 e f i 3 13 4230.38-2

, 60,045 .-- 2,404 87,528- 15 203 , 1,770 '

, ,172,170 , 0,824 163,321 43%; -. .

5,024 1,200 1. 67 102,274 07,018 .- 26;M 2,r#1 713 0.0'10 34,475 3,$& 953 0.815 38.030 4,169 998 0.852 186,722' 49,638 5,744 1,372 1.174 397 - f ,985,000 51,453 .--- 5,954 ----1,422 - 1.217 18 283 135,106 1 - 34,086 3,944 942 0 . W 17 174 --

89,425 3,544' -.- 04,828 .. 22,551 -- 2,810 I

--.-A 623 0.533

--. -DEV

-- STD --

MAX 1.217 MIN 0 . m

iC c

f i1 EkvatedAma (rrnavl EkvaMArea Arm- ' -

C-n- mn -'= bisr Z ' 3 22 Mbal wm EMF w*

EMT mlly 0.110 2 a?44 0.161 1

L am 5 e.m e RZBZ 7 0.287 8 0 313 P a-10 0.1037 77 12

s 14 I5 18 I f.lW 1

%OW OZeDS Relb 0.815 Qa O,Bo6 I

17 1 &5U Tsrd

SECTION 7 ATTACHMENT 2 3 PAGE@)

' B S I I L V S P ~ ~ ~ C ~ ~ ~

Revision 4 Pipe Tnterior Radiological Survey Form Date: b/i3/6G. Time:

Pipe ID#: pipe Di&&: 4@ Access Point Area: R m I ~.& r Building: 2 Elevation: - 5 ' System:

Type of Survey hvestigation Characterization Final Survey Gross Cs uctector W l e a W F %f * /SY ~ 2 ~ i' 3 6 ~

Detector Cal Date: 3/&6 Detector Cal Due Date: 3/6 /kL ,.--- . , .

In$ment: 23x9 / - Instrument ID #: Zd3 e

~ n t & l - ~ a 4 & * ~ ' /

- I x ~ & u m m L ~ l - D u ~ ~ - r. /I- . ---+/

/

~6 ..--.-. - .....

From the Daily Pipe Survey Detector Control Form for the Selscted Detector Background Value /Z.7 opm 2 MDCktati, /st 2 4 =F'm Efficiency Factor for Pipe Dinmeter O-DOO (from detector efficiency determination)

-4044 MDCstatic Is the MDC,~c acceptable?

Comments: Xu,v f i <d a e ( i f c z a d j u s t

-US ~f EP3- 7 2

aii. count tim and ltraiculate

~

MDCR.,~~)

P L C ~ E Technician Signature

/pw Pipe Interior Radiological Survey Package Page 1 o f 2 Attachment 3, Page 1

BSULV SPipeCrawler-002 Revision 4 Pipe Fnterior Radiological Survey Form {Continuation Form)

Date: &L3/0C Pipe ID#: - Pipe Diameter: It Access Point Area: Pmrk/A Building:  ?~IA/ Pt.7- Elevation: 5 -' System:

Package page _ ~ a ff Attachment 3, Page 2

SECTION 7 ATTACHMENT 3 I PAGE@)

DQA C W k ShM Design # EP RD-1 Revision # Original Suwey Unit # EP RD-I PreHminav Data Revtew' Answers to the fdlowing questions arhoutd be fully documented In the Survey Unit Retsase Record Yes No NIA

1. Have mweys been pedomredin aOOwdanoe with sunrey instrudiaarsin the Survey Deslgn'F X

2. Is the instrumerrtationMDC for structure static mefmtements below the DCGLw fw Clwa 9 and 2 X

suwey units, w below 0.5 DCGLWfor Cfass 3 wmy units?

3. Is the instrumenlprtion MDC for embeddedhuried piping static measurements below the DOG&? X

4. Was the instrumentation MDC for strudure ~ c e measurements, n SOU scan r n e a s u m t s , and embgddedhuried piping s m meeswwnents below the DCGLw, or,if not, WE. ihe need for dditbml X

&tic measurements or soil samples addressed in the survey design?

5. Was the instrumentation MDC for wrlurnetrlc measurements and m a r analysis c 10% DCGLw 7 X

,6. Were the M K Sand assumptions used to deveIop them appropriate for the instrumeh and technlque8 usedtaperformmsu~ 1

7. W e r e E h e ~ y ~ d s d t o c d l e F t d a t a p r o p e r f o r i h e t y p e s d ~ r w r M v e d a n d f o r t k X media being surveyed?

8. W m 'Speclal Methods' for data cullectlon properly applied fw the survey unEt under review? X

9. IS the data W m p r i s e d of qualified measurement results cdlected in accordan- wlth the survey X d e a n , which ecmrately reflects the m d h h g i d status of the fadtty?

GmphhC Data Review

3. Has a posting plot been Created?

a. Has a hlntogram (or other frequency pbt) hen created?

SECTION 7 ATTACHMENT 4 1 DISC