ML20082D432

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Responds to NRC Request for Addl Info on beta-gamma Measurements from Grid B-7
ML20082D432
Person / Time
Site: Saxton File:GPU Nuclear icon.png
Issue date: 07/16/1991
From: Hildebrand J
GENERAL PUBLIC UTILITIES CORP.
To:
NRC OFFICE OF INFORMATION RESOURCES MANAGEMENT (IRM)
References
C301-91-0007, C301-91-7, SNEC-91-0029, SNEC-91-29, NUDOCS 9107240071
Download: ML20082D432 (3)


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yE SAXTON NUCLEAR EXPERIMENTAL CORPORATION GENERAL P U B LIC UTILITIES SYSTEM

, SNEC Jemey Central Po*er & Light Company Pennsytvania Electnc Company JC M*"opohtan Edison Company PE MMLING ADDRESS. TELEPHONE.

1 Upper Pond Rd. (201) 316-7000 Parsippany, NJ 07054 July 16, 1991 S!4EC-91-0029 C301-91-0007 U.S. 14uclear llogulatory Commission At.tontion: Document Cont.rol Desk Washington, D.C. 20$55 Gent.] emon s Saxton Nuclear Facility Oporating 1.iconso No. DPit-4 Dockot No. 50-146 Responuo to NitC lloquent. Ior Addltianal Information Thin submittal responds to additional information requestod by J. j lloth, U S N it C , on Juno 19, 1991 por tolophone conversat. ion with B.

Good, Saxton General Manager. Additional bot.a gamma measuromont.s trem grid B-7 on t.ho ilWST pad woro requested to comparo wit.h the results documented in the SNEC Final lloloaso Survey Hoport and the measuromont.s made by Oak Itidge Associated Universit.los.

In responso to t.his request, the following measurement.s woro mado:

1. A beta-gunmia frisk waa performed of Grid B-7, HWST pad using a GM pancake det.uctor w! th an E -140N ratomotor.

( 2. A scan of B-7, liWST pud, was performed uuing a Na1 I detect.or wi th an 1.-16 rat. emet.er.

3. Fixed point. beta-gamma measurements were performed of Grid B-7, RWST pad, using a GM pancako detector with an ESP-1 scalor.

l 4. All grids on t.ho RWST pad woro completely resurveyed using a GM pancake det.octors with E-140N ratomet.ers.

5. An indt pendent, survey of Grid B-7, RWST pad, and grids immediately surrounding B- 7 was perf ormed by tho Quality Assurance Department using a GM pancako detector wi t h an E-14 0N rat.omet.or. p /)

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9507240071 910716 PDR ADOCK 03000146 -

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4 Attachment I contains the results of the additional measurements.

All measurements coniirmed the results originally reported for the RWST pad in t.ho SN!'C Final Release Survey of the Roactor Support Buildings previously submitted to the USNRC.

Please contact. us 11 you require addit.ional i n f orma t.l on .

Sincoroly yours, (U c l' AY++/ ($c' V J. E. 111 ldobrand President.

CC. A. Adams - NRC R. Bores - NRC M. Mendonca - NitC M. Riley -- Commonwealth of PA J. 110th - NRC S. Wolsa - NRC File: 2412.5.4 i

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  • At.t a c hmu n t 1 RWST Pad 14easurement. Results Dato Typo of 14easuromont. Results 6/20/91 l' risk with E-140!1 14aximum of 3000 dpm/100cm?

6/22/91 Scalor readings wit.h Min - 375 dpm/100em' Esp-l at t.ho normal 5 14ax - 1680 dpm/100cm' i1xed point.s and at 3 Avg - 1125 dpm/100cm 2 2

additional points Std Dov - 420 dpm/100cm identiflod with the 1,-16 scan 6/27/91 All grida on kWST Pad lio roadings at. or above surveyed wit.h E-14011 5000 dpm/100cm; identliiod 7/2/91 QA Frisk with E-14014 Grid 11-7 14aximum of 1500 dpm/100cm?

Grid D-8 !4aximum of 2000 dpm/100cm' Grid A-7 !4aximum of 1500 dpm/100cm' Grid B-6 Maximum of 2000 dpm/100cm 2 2

Grid C-7 Maximum of 2000 dpm/100cm

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