ML20141M668
| ML20141M668 | |
| Person / Time | |
|---|---|
| Site: | 07001050 |
| Issue date: | 04/26/1985 |
| From: | Oravec C ST. FRANCIS COLLEGE, LORETTO, PA |
| To: | NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION I) |
| Shared Package | |
| ML20140A571 | List: |
| References | |
| 03744, 3744, NUDOCS 8602280080 | |
| Download: ML20141M668 (1) | |
Text
f "LORETTO, PENNSYLVANIA 15940 e TELEPHONE L d 472-7000 F
1 SAINT FRANCIS COLLEGE w
A IHE COLLEGE AMONG THE PINES OFFICE OF TH!! PRESIDENT
- April 26, 1985 O
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U. S. Nuclear Regulatory Commission, Region I
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Nuclear Material Section B 2C 631 Park Avenue h tg King of Prussia, Pennsylvania 19406 Gentlemen:
We have a Pu-Be neutron source that has been used in the past in our physics laboratory courses.
Our license to use and house this material expires on April 30, 1985.
The license number is SNM-1003.
We have now decided not to renew this license, but instead to dispose of the nuclear material.
A physics instructor at our school, Mr. Peter Skoner, has spoken to Mr. Jack Davis at your office about the matter.
Mr. Davis suggested that we contact the Department of Energy concerning the disposal of this material.
Mr. Skoner has made contact with D.O.E. at their Savanah River Operations in Aiken, South Carolina.
He is going to coordinate the transfer of the material with Mr. Alan Gunter at D.O.E.
Mr. Davis also suggested that our school ask for an extension of our present license so that we can remain in compliance with NRC regulations until the disposal of the nuclear material is completed.
The purpose of this letter, then, is to request an extension of our present license until October 31, 1985 or until all nuclear material has left our property.
If you have any questions concerning this matter, please contact Mr. Skoner at (814) 472-7000, ext. 358.
Thank you for 8 your consideration.
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THE COLLEGE AMONG THE PINES J
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4 OFFICE OF THE PRESIDENT May 13, 1981
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United States Nuclear Regulatory Commission License Management Branch Division of Fuel Cycle and blaterial Safety Washington, D.
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20555 Gentlemen:
This letter is a request for amendments to the Special Nuclear Materials License of Saint Francis College numbered SNM-1003 (Docket No. 070-01050) in accordance with the United States Nuclear Regulatory Commission Regulatory Guide 10.3, section 5, entitled Amendments to a License.
The proposed amendments that follow are in reference to the letter of March 11, 1980 that was filed with your agency by Saint Francis College in making an application for license renewal.
The following amendment is proposed in the radiation protection instrumentation that is availabic to monitor and detect radiation as outlined in the second paragraph of section 7 of the license renewal letter.
In place of the 463A with Alpha Probe Portable transistorized count rate meter and area monitor, Universal Transistor Products Corporation, the following equipment will be made available for radiation monitoring and detection.
Model 8770 Educational Scaler (Nuclear of Chicago Corporation) with an IIP-190 Thin Mica End Window Probe with Alpha-Beta-Gamma Sensitivity (Eberline)
A copy of the manufacturers' specifications for the Model 8770 Educational Scaler and the llP-190 Probe are enclosed with this amendment letter.
It is proposed that paragraph three of section 7 concerning the calibration of the radiation protection instruments be amended to include the following sentences.
The Model 8770 Educational Scaler with the IIP-190 Probe will be calibrated against a 0.005 microcurie plutonium-239 alpha source produced and certified against National Bureau of Standards radiation calibration measurement "Cli!C!E RECORD COPY" r
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United States Nuclear Regulatory Commission h!ay 13,'1981 Page 2.
procedures by Eberline.
A fixed geometry configuration will be used between the IIP-190 Probe and the plutonium-239 alpha source during the calibration procedure.
This proposed amendment will extend the license to include the possession of the 0.005 microcurie plutonium-239 alpha source.
The final amendment involves the second sentence of paragraph four of section 8 of the license renewal letter.
The sentence will read as follows under the proposed amendment.
The blodel 8770 Educational Scaler with the IIP-190 Probe is used to detect alpha radiation on the filter pad via the same fixed geometry configuration used in the calibration procedure described in section 7.
Sincerely,
</m ft$~~ w (Rev.) Christian R. Oravec, T.O.R.
President Carl F.
Kwadrat Assistant Professor of Physics CRO:CFK:ak
Enclosures:
blodel 8770 Educational Scaler Specifications h!odel IIP-190 Probe Specifications
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Model 8770 Educational Scaler Nuclear of Chicago Corp.
SECTION I
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INTRODUCTION s
GENERAL DESCRIPTION i
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The Model 8770 Educational Scaler is an instrument for reliable counting in the laboratory or classroom. It accepts the pulses which originate in any y
one of several types of radiation detectors, and accumulates a total count of
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the pulses which are detected during an experiment. A count accumulation
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is indicated by the five direct reading decades on the front panel.
- . 7, The scaler includes a high voltage output circuit to provide the required
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operating potential to the associated detector. It is compatible with the I
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Model 404 Geiger Tube Detector System, the Model 402 Gas-Flow Geiger Detector System, and the Models 403 and 405 Scintillation Detector Systems.
It may also be used to accept pulses from any alternate similar source, j>
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Convenient connections are included for a timer which may be added for the J-purpose of either control or indication of the duration of a counting interval.
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Oscilloscope terminals are also provided to permit monitoring of the input i
circuit and to aid in setting up the proper operating conditions prior to run-4.
ning an experiment.
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The period of counting operation may be defined by either manual or preset-b 1
time stop control. The Model 8428 Educational Timer
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either preset time or elapsed time functions. The Model 8420 Dual Timer
- M (formerly Model TI) may also be used with the scaler.
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%dels given are for operation on normal 60 cycle prmer line frequency. For operation on 30 cycles, use
- y kdel 8429 in place of the 8428 and kdel 8421 in place of the 3420.
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Model 8770 Educational Scaler
!!gelear of Chicago Corp.
SPECIFICATIONS INP UT SENSITIVITY - Nominal 0. 25 volt across a 20 picofarad capacitor, or 5 picocoulombs charge-sensitive input.
PULSE PAIR RESOLUTION 10 microseconds.
q X10 within 5 microseconds; X40 within 10 OVERLO AD RECOVERY microseconds.
l SCALER C AP ACITY - 09,999 counts miximum.
1 COUNTING M ECH ANIS M -
1-2-4-8 binary counter, decoded for 10- line readout DISPL AY - Neon bulb, 10 line display for each of ftve decades.
O Power line frequency test signal supplied internally for g
L IN E TEST checking scaler operation.
Tur HIG H VOLT AG E SUPPLY - Continuously variable hetween + 400 f
and + 1500 volts. Supplies 50 microamperes maximuyn at any valtage level. Regulation is within 2 0. 25'fa for a 5 voit change m the power line input between 105 and 125 volts. Output level selecti d with direct reading front panel control.
P O W E It 11 E Q U I 11 E M E N T S - 115 volts
- 10%, 50-60 cps, 18 watts.
Available for 230 volt operation on request.
DIM E NSIONS - 12" wide by G 1/2" high by 10" deep overall.
j B'l 20 lbs. net; shipping weight 24 lbs.
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J Hand Probe, Model HP-190 GENERAL DESCRIPTION The ModelIIP 190 provides additional versatdaty for any geiger counter. The thin mica window allows monitoring for low energy beta emitting isotopes, and also gives sensitivity to high energy alpha particles.
The llP 190 may be ordered with Eberline G.M counters.such as Models E 120,L 140, E-400,E-520 or E-530,in lieu of the standard probe. Ilowever,it does not have the energy compensating shield that some probes,e.g. IIP-270,have and is not recommended in applications where the primary purpose is to measure exposure rate (mR/hr).
The 10443 804 Screen Cap is supplied with the IIP.190.This provides protection for the window and re-
.ains the low energy detection capabdity,but at a reduced efficiency.
The Model Sil 3 Sample lloider may be used with the llP-190 to provide constant geometry for sample countmg.
SPECIFICATIONS OPERATING VOLTAGE: 900 V.
PLATEAU LENGTil: 200 V nominal.
PLATEAU SLOPE: 0.1%/V maximum.
DEAD TIME AT 900 V: 200 pseconds maximum.
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OPERATING TEMPERATURE RANGE: - 55 *C to +75'C.
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LIFE: Unaffected by operation.
2 MICA WINDOW TillCKNESS: 1.4 to 2 mg/cm MICA WINDOW DIAMETER: I I/8 inches (2.86 cm).
CATIIODE MATERIAL: Stainless steel.
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G AMMA SENSITIVITY (Cs): Approximately 2500 counts per minute (cpm) per mR/hr.
' BETA EFFICIENCY (1 inch dia. source):
"Sr."Y (Emax.54 -2.2 MeV). Approximately 45% of 2rr emission rate.
0 "Tc (E,30.29MeV): Approximately 307 of 2rr emission rate.
j "C (Emu.15 MeV): Approximately 10% of 2rr omission rate.
0 SIZE: 1 3/8 inches dia. x 5 3/4 inches long 13.5 x 14.6 cm).
3 WEIGilT: 8 ounces (230 g).
J CONNECTOR: BNC series coaxial.
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- Measured without screen cap.With cap in place, efficiency wdl be approximately 1/2 of that listed.
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NOTE: The saturation specification of Eberline Feiger counters is not applicable when an IIP 190 is used I
j In place of the !!P-270.
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l eberline PO. Box 2108, Santa Fe.New Mexico 87501 (50 l
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January 1978
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