ML19350E067
| ML19350E067 | |
| Person / Time | |
|---|---|
| Site: | 07001050 |
| Issue date: | 05/15/1981 |
| From: | Kwadrat C, Oravec C ST. FRANCIS COLLEGE, LORETTO, PA |
| To: | Kinneman J NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION I) |
| Shared Package | |
| ML19350E064 | List: |
| References | |
| NUDOCS 8106160365 | |
| Download: ML19350E067 (2) | |
Text
.-
~
[
t.ORETT~) PENNSYLVANIA 15940. TEL 814/472-7000 x
SAINT FRANCIS COLLEGE W
THE COLLEGE AMONG THE MNES omes or Tus passmeur May 15, 1981 Mr. John D. Kinneman, Chief Materials Radiological Protection Section Technical Inspection Branch United States Nuclear Regulatory Commission 631 Park Avenue King Of Prussia, Pennsylvania 19406
Dear Mr. Kinneman:
This letter is in response to your correspondence of May 1, 1981 concerning Inspection 31-01 of *.he activities authorized by NRC License No. SNM-1003 (Docket No. 070-01050) for Saint Francis College.
The following statements are directed towards the information that you have requested in your letter.
In response to item number one, section A, of Appendix A, currective steps consist of a proposed license mnendment to use a Model 8770 Educational Scaler produced by the Nuclear of Chicago Corporation with a HP-190 Thin Mica Window Alpha-Beta-Gamma Probe produced by Eberline as a replacement instrument for the Universal Transistor Products Corporation Model Alphameter currently designated in the license.
The Model 8770 Scaler is owned by Saint Francis College and an order has been placed with Eberline for the purchase of the HP-190 Probe.
A letter of application for license amendment has been filed with the License Management Branch of the NRC to cover the proposed change in instrumentation.
In response to iten number two, section A, of Appendix A, corrective steps to be used in calibrating the leak test monitoring equipment on a semi-annual basis are as follows.
An application for license amendment has been filed to permit the use of a calibrated plutonium-239 alpha radiation source in conjunction with the semi-annual leak test.
The method of calibration proposed in the amendment consists of a fixed geometry configuratton to be used between the calibrated plutonium source and the HP-190 Probe.
Preliminary arrangements are in progress with Eoerline dealing with the specifications of the proposed source purchase.
The source will be certified indicating that its calibration has been baced on an NBS Standard Reference.
819616e365-
'),y..';.
United States Nuclear Regulatory Commission
-May 15, 1981 Page 2.
4 In response to iten number three, section A, of Appendix A, the corrective step that is being taken to detec< alpha radiation in leak testing is contingent upon the adoption o the proposed license amendments discussed in the preceding responses..The Model 8770 Scaler with the HP-190 Probe will be used to detect the presence of alpha contamination during leak testing.
The HP-190 Probe has a mic end window thickness of 1.4 to 2.#
111igrams per square centimeter making the penetration of the du. actor possible t
when a source of alpha radiation is placed in close proximity to the window.
The activity of the plutonium-239 source is to be 0.005 microcurieJ, the same as the contamination level designated
-in the license.
By placing the plutonium source at the same distance from the end window as the leak test wipe, a direct comparison can be made to determine if neutron source is leaking.
It is proposed that full compliance can be achieved when the HP-190 trobe and the calibrated plutonium-239 source are received from Eberline.
Since the source must be ordered under license, purchase of the source will be delayed pending the adoption of the above amendments filed with the License Management Branch, Division of Fuel Cycle and Material Safety of the United States l
Nuclear Regulatory Commission.
These amendments were submitted in a '.etter dated.' fay 13. 1981.
The howit er containing the neutron source designated in the license will remain sealed until a suitable leak test can be performed.
Sincerely,
)
v1~o c4 nrw (Rev.) Christian R. Oravec, T.O.R.
President t
Carl F. Kwadrat Assistant Professor of Physics CRO:CFK:ak i
l l
w---
,-9