IR 05000331/1982011
| ML20072Q172 | |
| Person / Time | |
|---|---|
| Site: | Duane Arnold  |
| Issue date: | 03/30/1983 |
| From: | Spessard R NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION III) |
| To: | Arnold D IES UTILITIES INC., (FORMERLY IOWA ELECTRIC LIGHT |
| Shared Package | |
| ML20072Q175 | List: |
| References | |
| NUDOCS 8304040481 | |
| Download: ML20072Q172 (1) | |
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MAR 3 01983 Docket No. 50-331
Iowa Electric Light and Power Company ATTN:
Mr. Duane Arnold Chairman of the Board and
,
Chief Executive Officer IE Towers
.P.-0. Box 351 Cedar Rapids, IA 52406 Gentlemen:
Thank you for your letter dated March 8,1983, which provided us with the correct attachment to your February 3, 1983 correspondence. This item was
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originally brought to your attention in Inspection Report No. 50-331/82-11.
forwarded by our letter dated October 7, 1982. We will examine these matters during a subsequent inspection.
Your cooperation with us is appreciated.
Sincerely,
"Orit r.;l SI ned 1.y V. S.1.ittkj'
i
4 R. L. Spessard, Director Division of Engineering t
cc:
D. Mineck, Chief Engineer cc w/1tr dtd 3/8/83:
DMB/ Document Control Desk (RIDS)
Resident Inspector, RIII Thomas Houvenagle, Iowa Commerce Commission l
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/87 RII RIII RIII RIII R II III Hasse/pd Farrell Hawkins Walker Little Spessard 3/26/83
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Iowa Electric Light and Pbwer Company 3 1.983 Februark-418 NG-8 LARRY D. R(XYT CUfdl5Iu"/$"
Mr. James Regional Administrator Region III U. S. Nuclear Regulatory Commission 799 Roosevelt' Road Glen Ellyn, IL 60137 Re: Duane Arnold Eneray 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 response letter, Item 1.B.c, states that there is no safe means for controlling pump flow rate or discharge presrure for the Also it states that a relief request to allow Diesel Oil Transfer System.
alternate testing 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 controlling pump flow rate and discharge pressure was identified and the operability test for the diesel oil transfer pumps was modified to comply with'this aspect of existing requirements.
The relief request was changed accordingly. The revised relief request (as
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contained in our letter NG-82-2355, L. Root to H. Denton, dated December 8, l
1982) is attached for your information.
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Very truly yours
Larry. Root Assistant Vice President Nuclear Generation LDR/ DEW /pf*
l Attachment: Relief Request No. PR-6
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D. Wittner D. Arnold L. Liu S. Tuthill NRC Resident Inspector Commitment Control Ref: # 82-0351 8304040487 830330 PDR ADDCK 05000331 O
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i Attachment (From our
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lett r NG-82-2355,
dated Decemb:r 8, 1982)
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L RELIEF REQUEST N0. PR-6 EMP NI'MBER: Diesel Oil Transfer Pumps IP-44A and B SECTION XI REQUIREMENTS:
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 tqst 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 transfer pump flow rate or discharge pressure. The 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 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 Revision 4 2-13