ML19351F241
| ML19351F241 | |
| Person / Time | |
|---|---|
| Site: | Arkansas Nuclear  |
| Issue date: | 12/04/1980 |
| From: | Trimble D ARKANSAS POWER & LIGHT CO. |
| To: | Seyfrit K NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION IV) |
| References | |
| 1-120-03, 1-120-3, 2-120-09, 2-120-9, IEB-80-09, IEB-80-9, NUDOCS 8101120044 | |
| Download: ML19351F241 (3) | |
Text
CENTRAL FILES m
PDR:HQ LPDR
.,MC NSIC ARKANSAS POWER & LIGHT COMPANY PCST CFFICE BOX 551 UTTLE ROCK. ARKANS!LS 72203 (501) 371-4000 December 4, 1980 1-120-03
(
2-120-09 M
Mr. K. V. Seyfrit, Director Office of Inspection & Enforcement U. S. Nuclear Regulatory Commission
~
L Region IV 1
m 611 Ryan Plaza Drive, Suite 1000 R
E Arlington, Texas 76011 w
Subject:
Arkansas Nuclear One - Units 1 & 2 Docket Nos. 50-313 and 50-368 License Nos. DPR-51 and NPF-6 IE Bulletin 80-09 (File:
1510.1,2-1510.1)
Gentlemen:
In our letter to you of July 31, 1980, and subsequent telephone conversations with your staff, we have informed you of our status on obtaining the remaining information necessary to complete our response to IE Bulletin 80-09.
This letter shall serve as a written record to document our progress since our July 31 letter.
Following our letter of July 31, in which we informed you that we had requested ITT-GC to research their files to determine if the six subject safety related hydramotor actuators used at ANO were sized properly, ITT-GC faile'd to respond to our request in a timely manner.
It was well into September before they were able to inform us that in fact they had not performed the sizing of the subject actuators and had no idea as to who might have done so. After obtaining this information from ITT-GC, we again searched our files to determine which vendor (s) supplied the components on which the six subject actuators were utilized. We found that the four actuators used on ANO-1 were used to acti-vate control valves in the penetration room ventilation system.
These control valves were supplied by Fisher Controls Company.
The two actuators used on ANO-2 were utilized in the reactor cavity cooling system and were purchased from American Warming and Ventilating, Inc.
In early to mid-October we contacted both Fisher Controls (through VRC Company, their local repre-sentative) and American Warming and Ventilating.
VRC informed us that Fisher Controls had responded directly to the NRC on this bulletin and in this response they sighted only a few cases'of improper actuator sizing.
None of these cases involved ANO.
VRC cocrnitted at that time to provide us with a written response stating this fact. On December 2, 1980, we received this response. Unfortunately, the response only addressed the spring material concern, which we had already determined did not
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Mr. K. V. Seyfrit December 4, 1980 affect ANO, and did not address our concern of proper sizing due to the
" Selection Nomographs".
In subsequent attempts to contact VRC, we were informed that our contact would be out of the office until December 8, 1980.
In early October we contacted American Warming and Ventilating to deter-mine if they had performed the sizing of the two subject actuators for AN0-2.
They informed us they would research their files and would get back in touch with us. After several weeks, American Warming and Venti-lating informed us that the dampers which they had supplied for ANO-2 were shipped without actuators and they had not performed the sizing of the actuators. After obtaining this information, again we went back to our AE for ANO and requested them to determine which company had sized the actuators for the two specific American Warming and Ventilating dampers.
In early April our AE informed us that Pcwers Regulator Company had been contracted to supply and size the actuators for these two par-ticular dampers.
Upon obtaining this information, we contacted Powers Regulator Company, which is now MCC Dowers, and requested them to deter-mine if the two subject actuators were sized properly.
We followed this telephone request with a letter dated November 19, 1980. In this request we asked that they supply us with this information within three weeks.
To date we have had no further correspondence from MCC Pcwers.
We feel confident now that we are in contact with the two companies who did the actual sizing of the six ITT-GC actuators used at ANO.
These companies are now working directly with us to provide us with the in-formation necessary to respond to the remaining open issue on Bulletin 80-09.
In response to items 2(a) and 2(b) of Bulletin 80-09 the following is provided.
For ANO-1 the four subject safety related actuators are used in the penetration room ventilation system.
As stated in our letter to you of July 8,1980, these actuators were manufactured using the proper spring material.
These actuators, as part of the penetration room ven-tilation system, were satisfactorily tested during plant startup and have been tested at least once every 18 months since.
To date there have been no recorded failures of these actuators.
For ANO-2 the two subject safety related actuators are used in the reactor cavity cooling system. As was stated in our letter of July 8, 1980, these actuators were manufactured using the proper spring material.
These actuators, as part of the reactor cavity cooling system, were satisfactorily tested during plant startup and will be tested each refueling as part of the l
Integrated Engineering Safety System Test.
Very little history has been developed for these actuators since ANO-2 has been operating only a short time. To date no failures have occurred.
We anticipate receiving VRC's and MCC Powers' responses to our requests for the remaining information needed to respond to this bulletin within the next two to three weeks.
If for any reason ve can not obtain this material in that time frame, we will inform you.
Very truly yours,
& {.
I David C. Trimble Manager, Licensing
-.