ML061730186

VYNPS, DR-53 Location Exposure Rate Status-Pre Power Up, Pre and Post Shield

ML061730186
Person / Time
Site:	Vermont Yankee
Issue date:	05/24/2006
From:	Skibniowsky S - No Known Affiliation
To:	Office of Nuclear Reactor Regulation
References
%dam200610
Download: ML061730186 (3)

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DR-53 Location Exposure Rate Status - Pre-PowerUp, Pre and Post Shield - 3/4 5/10 l and 5123 Data Prepared by SP Skibniowsky, 5/24/06 Pre-Power Up Exposure at DR-53 Location Background Measurements I I PIC Bkgd Readings (03103106)

Hinsdale (VY Bkgd) Average 0.008990 mR/hr State Locations Average 0.008477 mR/hr Gross Readings Net Readings VY PIC at DR-53 Location _VY Bkgd State Bkod Limits (mR/hr)

I I Bkgd Sub Bkgd Sub Alert Alarm Pre Power Up I (2/28 @ 1700 to 3/4 @ 0800) 0.010303 mRlhr 0.001313 mR/hr 0.001826 mR/hr 0.002620 0.002758 Exposure Prolection at DR-53 Location (Based upon data collected at 1593 MWTh - 2/28 @ 1700 to 3/4 @0800)

Exposure Rate 0.001313 mR/hr at DR-53 Location I mR Exposure Proiection - Month (31 Days) 0.98 Exposure Proiection - Quarter (91 days) 2.87 Exposure Proiection - Year (365 Days) 11.50

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Pre-Shield Exposure at DR-53 Location Background Measurements PIC Bkgd Readings (05/09/06)

Hinsdale (VY Bkgd) Average 0.009489 mR/hr State Locations Average 0.009206 mR/hr Gross Readings Net Readings

.VY PIC at DR-53 Location VY Bkqd State Bk Ld Limits (mRLhr_

I Bkod Sud Sub Sub Alert ]Alarm Pre Shield 1 (5/9 @ 0600 to 5/10 @ 0600) 0.012023 mR/hr 0.002534 mR/hr 0.002817 mR/hr 0.002620 0.002758 Exposure Profection at DR-53 Location (Based upon data collected at 1912 MWTh -5/9 @ 0600 to 5/10 @ 0600)

Exposure Rate 0.002534 mP/hr at DR-53 Location Im._ mR Exposure Proiection - Month (31 Days) 1.89 Exposure Proiection - Quarter (91 days) 5.53 1

Exposure Proiectionr - Year (365 Days) 22.20 I I_

I Post - Shield Exposure at DR.53 Location I _ _ i _ I _ _ _ _

Background Measurements PIC Bkgd Readings (05/22/06 Hinsdale (VY Bkgd) Average 0.009506 mR/hr Putney Town Hall (State Bkgd) 0.009347 mR/hr Gross Readings Net Reading s VY PIC at DR-53 Location VY Bkqd -State Bkgd Limits mRhr) f FIBkqd Sub Bk~qd Sub Aler Aam Post Shield I _

(5/22 @ 0700 to 5/23 0700) 0.011372 mR/hr 0.001866 mR/hr 0.002025 mR/hr 0.002620 0.002758 Exposure Projection at DR-53 Location (Based upon data collected at 1912 MWTh - 5/22 @ 0700 to 5/23 @ 0700)

Exposure Rate 0.001866 mP~hr at DR-53 Location I mR Exposure Projection - Month (31 Days) 1.39 Exposure Projection - Quarter (91 days) 4.08 Exposure Projection - Year (365 Days) 16.35'

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