ML20133N945
| ML20133N945 | |
| Person / Time | |
|---|---|
| Site: | Fort Saint Vrain  |
| Issue date: | 07/31/1985 |
| From: | Hunter D NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION IV) |
| To: | Butcher E Office of Nuclear Reactor Regulation |
| Shared Package | |
| ML19283F957 | List: |
| References | |
| NUDOCS 8508140067 | |
| Download: ML20133N945 (3) | |
Text
_ _
50- A L'1 31 JUL 1985 MEMORANDUM FOR: Edward J. Butcher, Jr., Chief ORB-3, NRR FROM:
Dorwin R. Hunter, Chief Reactor Safety Branch, RIV
SUBJECT:
REQUEST FOR PUBLICATION IN MONTHLY FR NOTICE - NOTICE OF CONSIDERATION OF ISSUANCE OF AMENDMENT TO FACILITY OPERATING LICENSE AND PROPOSED NO SIGNIFICANT HAZARDS CONSIDERATION DETERMINATION AND OPPORTUNITY FOR A HEARING Public Service Co. of Colorado, Docket No. 50-267, Fort St. Vrain Nuclear Generating Station, Platteville, Colorado Date of amendment request:
June 21, 1985 Description of amendment request: The proposed changes to the Technical Specifications incorporate the standard guidance for instrumentation set-points and allowable values. The proposal would provide for new definitions and new formatting for plant protective system instrumentation.
In most cases, the actual trip setpoints are the same or more conservative than the existing setpoint.
In those cases where the new setpoint is less conserva-tive, new, supporting safety analyses have been provided.
Basis for proposed no significant hazards consideration determination:
The Commission has provided guidance concerning the application of these standards by providing certain examples (48 FR 14870).
The examples of actions that are considered not likely to involve significant hazards considerations include:
"(i) A purely administrative change to technical specifications:
for example, a change to achieve consistency throughout the technical specifications, correction of an r cor, or a change in nomenclature; 8508140067 850731 PDR ADOCK 05000267 e
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a "(ii) A change that constitutes an additional limitation, restriction, or control not presently included in the technical specifications: for example, a more stringent surveillance requirement; and
"(vi) A change which either may result in some increase to the probability or consequences of a previously-analyzed accident or may reduce in some way a safety margin, but where the results of the change are clearly within all acceptable criteria with respect to the system or component specified in the Standard Review Plan:
for example, a change resulting from the applica-tion of a small refinement of a previously used calculational model or design method."
Based on an initial review of the proposal, the various portions appear to be representative of one or more of the above examples:
(1) The new definitions and revised format for the instrument setpoints are representative of examples (i) and (ii) in that they provide admir.istrative changes to achieve consistency through a change in nomenclature and also constitute an additional limitation in the form of expressing two sets of limits (Trip Setpoint and Allowable Value); (2) new limits and associated action statements which retain the present setpoint values are also administrative changes which are proposed to achieve consistency through the use of a standard nomenclature; and (3) the new limitations and those limits for which the set-point values have been revised are representative of example (vi) in that the affected accident or transient has been re-analyzed to better define the operational conditions which are allowable while retaining the acceptance criteria previously established. Therefore, the staff proposed to find that the above application represents an action which involves no significant hazards considerations.
4 s
- Local'Public Document Room location:
Greeley Public Library, City Complex Building, Greeley, Colorado.
Attorney for licensee:
Bryant O'Donnell, Public Service Company of j-Colorado, P. 0.' Box 840, Denver, Colorado 80201.
NRC Branch Chief:
Dorwin R. Hunter
" Original Signed By:
D.R. HUNTER" Dorwin R. Hunter, Chief Reactor Safety Branch cc:
P.'C. Wagner E. M. Haycraft G. C. Lainas K. L. Heitner.
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