ML20064N606
| ML20064N606 | |
| Person / Time | |
|---|---|
| Site: | Duane Arnold  |
| Issue date: | 02/03/1983 |
| From: | Root L IES UTILITIES INC., (FORMERLY IOWA ELECTRIC LIGHT |
| To: | James Keppler NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION III) |
| Shared Package | |
| ML20064N578 | List: |
| References | |
| NG-83-418, NUDOCS 8302160286 | |
| Download: ML20064N606 (2) | |
Text
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Iowa Electric Light and hwer Company February 3 1983 NG-83-418 I$fEOEEsau 44 0L.7 AR Gt.M AAIN)%
Mr. James G. Keppler Regional Administracor Region III U. S. Nuclear Regulatory Commission 799 Roosevelt Road Glen Ellyn, IL 60137 Re: Duane Arnold Eneroy Center
Subject:
Update Response to Inspection Report 82-11 Item 1.B.c
Reference:
IE Ltr NG-82-2348, Root to Keppler, " Response A-102,pection Report 82-11," dated November 8, 1982 to Ins NRC-4, Inspection Report 82-11 File:
Dear Mr. Keppler:
This letter is to notify you of a change to our response to Inspection Report 82-11, concerning control of the diesel oil transfer system.
Page 2 of the reference resoonse letter, Item 1.B.c, states that there is no safe means for controllino pumo flow rate or discharge pressure for the Diesel Oil Transfer System. Also, it states that a relief request to allow alternate testino was' drafted and undergoing internal review prior to being submitted to the'NRC for approval. A copy of this relief request was attached to the response letter.
While in internal review a safe method for controllino pump flow rate and discharce pressure was it'entified and the operability tcst for the diesel oil transfer pumps was modif tad to comply with this asoect of existing requirements.
The relief request was changed accordingly. The revised relief request (as contained in our letter NG-82-2355, L. Root to H. Denton, dated December 8, 1982) is attached for your information.
Very truly yours Larry. Root Assistant Vice President Nuclear Generation LDR/ DEW /pf*
Attachment:
Relief Request No. PR-6 cc:
D. Wittner D. Arnold L. Liu S. Tuthill NRC Resident Inspector Commitment Control Ref: # 82-0351 8302160286 830211 PDR ADOCK 05000331 s
t;eneral office. Pn Ika.ns crat.or napiah, kma x40s
- 3sstass-44ss Y
Attachment (From our letter NG-82-2355, dated December 8, 1982)
RELIEF REQUEST NO. PR-6 PUMP NUMBER: Diesel Oil Transfer Pumps IP-44A and B SECTION XI REOUIREMENTS:
1)
During testing, the resistance of the system shall be varied until either the measured differential pressure or the measured flow rate equals the corresponding reference value.
2)
Any deviations determined from the measured test quantities shall be compared with limits given in Table IWP-3100-2 and the specified corrective action t aken.
3)
Each pump shall be run. at least five minutes under conditions as stable as the system permits.
BASIS FOR RELIEF:
1)
There are no safe means for controlling diesel oil The transfer pump flow rate or discharge pressure.
diesel oil transfer pump is a screw type, positive displacement, pump and the system has no over pressure protection.
2)
The ASME limits in Table IWP-3100-2 are based on the assumption that an independent variable, either flow rate or differential pressure, is set to a specific j
reference value, and the dependent variable is measured and compared to the ASME limits. As stated above, neither flow rate nor differential. pressure can be safely controlled. Therefore, the ASME limits in Table IWP-3100-2 cannot be applied to the diesel oil transfer pumps.
10W-45-210 2-13 l
Revision 4
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