ML20069E734
| ML20069E734 | |
| Person / Time | |
|---|---|
| Site: | 05000124 |
| Issue date: | 03/17/1983 |
| From: | VIRGINIA POLYTECHNIC INSTITUTE & STATE UNIV., BLACKSB |
| To: | Office of Nuclear Reactor Regulation |
| Shared Package | |
| ML20069E719 | List: |
| References | |
| NUDOCS 8303220175 | |
| Download: ML20069E734 (2) | |
Text
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COLLEGE OF ENGINEERING
/r VIRGINIA POLYTECHNIC INSTITUTE AND STATE UNIVERSITY
%cksberg, Virginia 24061 NUGEAR REACTOR I.ABORATORY I] P gsg).//f Date MEMORANDUM TO:
Division of Licensing, U.S. Nuclear Regulatory Commission FROM:
Reactor Supervisor, VPI & SU Research Reactor REF:
License Number R-62, Docket No. 50-124
SUBJECT:
Request for Approval of Change in Licensee's R-62 Technical Specifications Attached for your review is a written confirmation by the Reactor Safety Committee chairman that the VPI & SU Reactor Safety Committee has reviewed and approved the VPI & SU Reactor Staff's proposal for a change in Technical Specifications.
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C'hairinh, Reactor Safety Committee cc: Vice President for Administration and Operations Nuclear Reactor Laboratory Director Reactor Safety Committee Chairman Reactor Staff 8303220175 830315 PDR ADOCK 05000124 P
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I TABLE 1 Proposed Technical Specification Changes Item Description Primary Flow Detector Changed from specific type detector to general type detector.
Portable Radiation Survey Instruments Performance specifications to address new equipment.
Incorporated fast and slow neutron requirements into one range; Beta-Gamma survey instrument range expanded Low Power Fuel Elements neleted reference to Low Power Elemdnts (not at facility).
Installed Radiation Monitoring Instruments Performance specifications to address new equipment Range change from 0.01-10.0 mR/hr. to 0.1-10000 mR/hr.
Con tr ol Rod Reactivity Insertion Rates Deleted insertion rate with core devoid of water.
Response to an NFC violation; wi'.1 addrcSS "~i maintenance.
Vice-President Administration Changed wording to Vice-President of Administration and Operations.
Radiation Safety Corr.ittee Changed wording tc Reactor Safety Committee.
Secondary Cooling System Perfo rmance specifications to allow installation of the new system.
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COLLIGE OF ENGINLERING 3p a.,
q W' B!achburg, Virginia 24061 Ntfr1 EAR REACTOR LADORATORY September 24, 1982 Dr. Cecil 0 Thomas, Chief Standardization 6 Special Projects Branch Division of Licensing U. S. Nuclear Regulatory Commission Washington, DC 20555 RE: Docket No. 50-124, License No. R-62
Dear Dr. Thomas:
This letter is being written to request c chance to our Technical Specifica-tions.
Our current Technical Specification < list in Ta5io I, Safety System functions, Item No.
3, the Coolant Moderator Flow < Sat Point detector as measured by a flow orifice in the nocesa pit.
Our proposed changes to R-62, Dacket 50-124, Technical Spec i f i cat ions, submitted to you on May 15, 1981, listed in Table I Instrument isrrays, Section ',, Measuring Channel, Detector colunn: Ultrasonic _or Flew Orifice, D/P detector and Section P,,
Safety channel, Detector column:
Ultrasonic or flow orifice, D/P detector.
The Virginia Polytechnic Inst itute and State University Reactor staf f proposes to delete the re fe rence to the type or flow detector and replace with:
flow detector, i t' ac uracy minimun, over the full scale range measured.
This proposed change is due to the following reasons:
(1) presently, we desire to instal 1 a different type of flow detector (paddle wheel) than originally planned (ultrasonic);
(2) in the event of future flow detector and/or circuitry failures which require significant repairs, a spare detector could be expediently utilized (without a change in Technical Specifications);
(3) if future changes occur with the type of flow detector desired, no change in Technical Specifications would be required (yet mininum accuracy requirements would be assured), thus f acilitating operational ficxibility and safety; (4) requiring a minimum accuracy, as opposed to the detector type, will ensure safer operation since regardless of future flow rate changes (due to proposed power upgrade), detector changes, alarm set point changes, or procedural changes, the detector must operate according to a specified accuracy, and; (5) The 17, accuracy requirement comp 1tes with the presently-installed detector pe r formance characteristics.
Sincere 1y,
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i PDH:Jd Peter D. Hollan cc:
T. F. Parkinson Reactor Supervisor VPI Reactor Safety Committ<_c VPT Reactor Staff / Operators f
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