ML19281A276
| ML19281A276 | |
| Person / Time | |
|---|---|
| Site: | Vermont Yankee File:NorthStar Vermont Yankee icon.png |
| Issue date: | 02/27/1979 |
| From: | Groce R VERMONT YANKEE NUCLEAR POWER CORP. |
| To: | Office of Nuclear Reactor Regulation |
| References | |
| WVY-79-24, NUDOCS 7903090273 | |
| Download: ML19281A276 (2) | |
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VERMONT YAN KEE NUCLEAR POWER CORPORATION SEVENT v SLvLN OROVE STRECT B.3.2.1 RUTLAND, VERF10NT 05701 R EPLY 70; ENGINEERING OFFICE TURNPlKE RO AD WESTDOPO. M ass ACH USETTS 015 81 TELEPHCPeECl7 366 9011 WY 79-24 February 27, 1979 United States Nuclear Regulatory Commission Washington, D. C.
20555 Attention: Office of Nuclear Reactor Regulation
Reference:
(a) License No. DPR-28 (Docket No. 50-271)
(b) VYNPC letter WY 78-37 to USNRC dated April 14, 1978; Response to IE Eulletin 78-03
Dear Sir:
Subject:
Supplemental Information Regarding Vertent Yankee Off-Gas System Operation The purpose of this letter is to document verbal supplemental inforta-tion given to Messrs. Rooney and Lo of the USNRC and Mr. Hoza of Allied Checical on February 27, 1979, regarding the Vercont Yankee Off-Gas System. The informa-tion provided was in response to telecopied quest.ons received from Allied Chemical and was necessary to allow ce=pletion of the review of Reference (b).
Questions and answers were as follows:
Question No. 1 (per telecony):
"Is the rupture disc referred to in response 2 of reference 1* the one located just downstream of the after condenser following the second stage SJ.E as shown in reference 3?**
If not, where in the system is the rupture disc centioned in response 2 located?"
Response
There were two rupture discs installed in the off-gas system. The piping located downstream of the aftercondenser has been blanked off and the rupture disc recoved. The other rupture disc is located in a section of piping between the second stage air ejector and the recombiner preheater.
Question No. 2 (per telecopy):
"Is either high recombiner temperature or high flow downstream of the recombiner after condenser alarmed in the main control roon?"
Response
High recombiner tecperature, high flow downstream of the recombiner
~79o3ertoa.t3
ye United States Nuclear Regulatory Commission February 27, 1979 Attention: Office of Nuclear Reactor Regulation Page 2 and low flow upstream of the recerbiner are alarmed in the tain control room.
Reference 1 of the telecopy is the same as Reference (b) of this letter.
Reference 3 - VYNPS letter to USNRC dated June 2, 1976.
It is our understanding that the above responses will allow the review of Reference (b) to be completed and a positive determination regarding the adequacy of the Vercent Yankee system to be cade.
If any additional questions should arise, feel free to contact us.
Very truly yours, VERMONT YA' ZEE NUCLEAR POWER CORPORATION Robert 11. Groce Licensing Engineer RJW/cm