ML073330598

EP-CRT-9, Nasa, Survey Unit Release Record

ML073330598
Person / Time
Site:	Plum Brook
Issue date:	11/15/2007
From:	US National Aeronautics & Space Admin (NASA)
To:	NRC/RGN-III/DNMS/DB
References
EP-CRT-9
Download: ML073330598 (12)

Text

Survey Unit Release Recod Design # EP-CRT-9 Revision # Original Page 1 of 3 Survey Unit #ts) CRT-9

1) Embedded Pipe (EP) Sravey Unit CRT-9 meets the definition ofembedded pipe for Phm B m k Reactor Facility (PBBF).

2 ) EP CRT-9 is a Chsa 1, Group 1 survey unit as per the PBRF Fmd St atus Survey Plan (FSSP) and Technical Basis Document ('FBD-06-004.

3) Sucveys in EP CRT-9 were performed using a scintillation detector optimized to masure gamma energies representative ofCo-60. Sample #EP 3-9 from Sumey Rgquest (SR)-13 was refemaced for this decision

4) S m e y lastructions for this survey unit are incorporated intoand performed in accordance with ( I the &hock Services Incaprated @SI)ILVS-002, AW)

Work hemtion Package (WEPI 05-006. Survey instructions dewribed in this Description document constitute "Special Methods" and the survey design used in the acquisition ofsurvey meslsumnents.

5 ) Instrument &cieocy determinations are developed in w d a u c e with the BSILVS-002, WEP 05-006, these detmnimtiana m appropriate for the types of radiation involved and the media King surveyed.

FSS / C b d o n Engineer CSW1

L ,

FSS Design # EP CRT-9 Revision # Original Page2of3 Survey Unit: CRT-9 1.0 HistoryIDescription 1.1 The subject pipe system is a 2.5" diameter penelmiion located on the CRT plate within the Sub Pile Room.The system access point is located on the

-34' el. of the Rx building.

1.2 EPCRT-9consi~sof2.5"diameterpipi~tbatisa~mximately3f&in length.

2,O Survey Design Infbrxnation 2.1 EP CRT-9 W~B m e d IAW Procedure #BSVLVS-002.

2.2 1W ! ofthe piping w accessible for survey. The accessible pipe was surveyed by static measurement at one foot increments, for a total of 3 sumy measurements.

2.3 The+total slrrfrtce area for the piping system is approximately 1,824 cm2 (0.2 m2)for the d i r e length of (3') of piping.

3.0 Survey Unit Measurement LocationdData 3.1 Pipe interior radiologid survey forms are provided in Attachment 2 of this release record.

4.0 Survey Unit ?nvestigations/Results 4.1 None 5.0 Data Assessment Results 5.1 Data assessment results are provided in the EPBuried Pipe (BPI Survey Report provided in Attachment 1-5.2 All meawemeat results are less than the Derived Conantration Guideline k v e l W G L ) for radionuclide specificEP that corresponds to the 1 mrem/yr dose goal established in Table 3-3 ofthe FSSP.

5.3 When implementing the Unity Rule, provided in Section 3.6 3 of the FSSP, and applying the Nuclide Fraction 0, provided in TBD--004, the survey unit that is constituted by EP CRT-9 passes FSS.

5.4 Backpuad was ndsubtracted from the survey measurements and the Elevated M t a w e m d Comparis~ln(EMC) was not employed for this x m e y unit.

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SECTION 7 ATTACHMENT 1 Z- PAGE@)

BSI EPDP SURVEY REPORT ACTIVITY VALUES NOT BACKGROUND CORRECTED

SECTION 7 ATTACHMENT 2

BSTLVSPipeCrawIer-002 Revision 5 Pipe Interior Radiological Suwey Form Date; \ 0 - xq - 07 Time: 16x3 Pipe ID#:

-- q PipeDiameter: a.5" Access Point Area:

Building: Elevation: -'3h\/ System:

Type of Survey Investigation Characterization Final Survey Other d Gross C06O Cs Detector ID#/ Sled ID#

Detector Cal Pate: \ - !\ - 0 7 Detector Cal Due Date: \ -\\--h p

~stnutzent: 2-35 0-1 Instrument ID #: l k 4 0 44 I n s t m e n t Cal Date: \ - \ I -07 TnstrumentCalDueDate: I -\I-L)$

From the Daily Pipe Survey Detector Control Fonn for the Selected Detector Background Value 3 ,+ cprn EfiFicimcyFactor for Pipc Diameter 0.000 33 (from detector efficiency determination)

MDGb(ic 3q27 dpd IOQ cm2 Is the MDC,Ni, acceptable? @ .NO (if no, adjust sample count time and recalculate MJ3-,J comments: Po A- Lb \Do94 6 m & -

Technician Signature Pipe Interior Radiological Survey Package Page 1 of Attachment 3, Page 1 - .

CzI REFERENCE COPY

SECTION 7 ATTACHMENT 3 I PAGE@)

Design # [ EP CRT-O 1 Revidon # 1 Original 1 EP-C RT-9

1. Havesuweys~nperformedinacodrdancewithsu~yinstructionsin~eSurveyDesign'l

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2. k lhinstrumemtation MDC for sttrreture M c measurements below the D C G h for Class 1 and 2 .::.&

. X surwy units, or b l o w 0.5 DCGLvv for Class 3 survey unb? . , .

!::<{?',:' ,

3. Is the instrumeritatian MUC for e m ~ ~ u r l piping e d static measurements below the DCGh 7 .. . y :,.":,, :.':....~

x;,,:

4. Wars the ingtnrmentatiwl MDC fw sbueture smn measurements, soil scan measurements, and emWbed/blrrled piplng scan meawrsmenta b d d w the DCGLw,or. If not, was the naed for additional static measurements or son zmmples addres#d m the suwey design?

5. Was the instrumentation MDC for volumebic measurements and smear analysis c 10% D C Q h 7

j.

X

8. W m the M K Sand aSumpUons uud to O.ulop thm appmptiab for h.instruments and technique used to perform the SUM  :-$gy

7. Wwethe survey methods used to cdlect data promforthe lype of mdlertian i n v o w and for t b r n d m W n g surveyed?

8. Were 'Spdsl M e t h d s n for data collection properly applied for the survey unlf under review7 , ,:.

-+-.:. .

9. ISthe data set m q x i d of qualiiied m u w e n t w u t b collected in accwdance with the survey .!+&::-;:

design, whleh accurately reflects the radiological status of the facility?  ;$$ .!::

I 2.

3.

Has a h iram (or othff Requency pltrt) b m mated?

Have other graphical data tools been creatd to asass/&In analyzing the data?

X X I Page 1 of 1

SECTION 7 ATTACHMENT 4 1DISC