ML20148L620
| ML20148L620 | |
| Person / Time | |
|---|---|
| Site: | Duane Arnold  |
| Issue date: | 06/10/1997 |
| From: | Franz J IES UTILITIES INC., (FORMERLY IOWA ELECTRIC LIGHT |
| To: | NRC (Affiliation Not Assigned), NRC OFFICE OF INFORMATION RESOURCES MANAGEMENT (IRM) |
| Shared Package | |
| ML20148L627 | List: |
| References | |
| NG-97-1010, NUDOCS 9706190316 | |
| Download: ML20148L620 (3) | |
Text
_ __..
IES Utihties Inc.
l 200 First Street S E.
PO. 00x 351 Cedar Rapids, IA 5N06-0351 l
Telephone 319 398 8162 Fax 319 398 8192
.lohn F Franz, Jr.
Vice President, Nuclear June 10,1997 NG-97-1010 Office of Nuclear Reactor Regulation U. S. Nuclear Regulatory Com. mission Attn: Document Control Desk hiail Station Pl-37 Washington, DC 20555-0001
Subject:
Duane Arnold Energy Center Docket No: 50-331 Op. License No: DPR-49 Response to Request for Additional Information on Improved Technical Specification Change for Instrument Setpoints
Reference:
- 1) G. KcIly (NRC) to L. Liu (IES), "Duane Arnold Energy Center -
Request for AdditionalInformation on Duane Arnold Energy Center Conversion of the DAEC Technical Specifications to the Improved Technical Specifications Regarding Setpoint Allowed Values (TAC No.
M97197)"
- 2) J. Franz (IES) to F. Miraglia (NRC)," Submittal of License Amendment Request to Convert the DAEC Technical Specifications to the Improved Technical Specifications (NUREG-1433), (RTS-291)," NG-i 96-2322, dated October 30,1996.
- 3) J. Franz (IES) to A. B. Beach (NRC),"lES Commitments Regarding Compliance with Technical Specification Instrument Settings," NG /
0395, dated February 25,1997
/
- 4) G. Kelly (NRC) to IES Utilities Inc.," Summary of March 20,1997 Meeting on Technical Specification Setpoints and the Practice of Not
/
Entering Limiting Conditions for Operation (LCO) Action Statements g)
During Certain Surveillances," April 3,1997.
File:
A-117 ll!,!!!lIll!!!!!,llkf!h.!!!, !
i
~
9706190316 970610 PDR ADOCK 05000331 p
PDR An IES Industre Company
NG-97-1010 1
June 10.1997 i
Page 2 of 3
Dear Sir (s):
Reference I requested additional information regarding our submittal (Ref. 2) to convert j
the DAEC current Technical Specificctions (CTS) to the Improved Technical Specifications (ITS). Specifically, the Reference I letter requested additional supporting justification for the conversion of the specific nominal trip setpoints (NTSP) in the CTS to the Allowable Values (AV)in the ITS for instrument setpoints. The Enclosure to this I
letter provides this requested information. The Enclosure is organized as follows:
Section I provides a brief overview of the DAEC Instrument Setpoint Control Program, which has been more fully discussed with the Staffin recent meetings and correspondence (Refs. 3 and 4). In particular,Section I describes how setpoints are established when an Analytical Limit (AL) exists, as well as when no AL exists and the setpoints are established using other information. It also contains a glossary of terms and acronymns used in the document and a diagram depicting the relationships between the various elements used in the determination ofinstrument setpoints. Section 11 contains the Index and Legend that explains the I
format and content of the individual Datasheets for the ITS line items provided in Section ill As discussed previously (Refs. 3 and 4), the DAEC Instrument Setpoint Control Program is based upon the General Electric Instrument Setpoint Methodology (NEDC-31336P),
which conforms to the guidelines of Regulatory Guide 1.105, Rev. 2 and ISA Standard S.67.04,1982.
In addition, for those instruments whose calibration frequencies are being extended in the ITS, the AVs in the ITS were developed in accordance with the guidance contained in i
Generic Letter 91-04, as discussed more fully in the Discussion of Change (DOC) in Volume 9 of Reference 2 (e.g., Ley and L c)-
i Because the Enclosure represents a condensation of a significant amount of detailed information, we recognize that further dialogue may be needed on specific issues. If the Staff needs to review this detailed information, further discussions may be more
(
efficiently conducted at the DAEC, where the necessary background information and setpoint calculation packages are located.
The information contained in the Enclosure represents current plant design information.
Because reconstruction of the DAEC design basis is a "living" process, this information will change in the future. Consequently, we do not consider this submittal to constitute any commitments on our part to keep the Staffinformed of any such changes other than those required by 10 CFR Parts 50.59 and 50.90.
No commitments are being made or revised by this letter.
la
NG-97-1010 June 10,1997 Page 3 of 3 Should you have any questions regarding this matter, please contact this office.
Sincerely,
.kW
/7[ff~
at?
w Vice President, Nuclear
Enclosure:
Duane Arnold Energy Center. Current +o-Imoroved Technical Snecifications Setnoint Cross-Reference Document JFF/RAB/rab NMowaiticensingingi971010 cc:
R. Browning L. Root G. Kelly (NRC-NRR)
A. B. Beach (Region 111)
NRC Resident Office Docu