ML20049J332
| ML20049J332 | |
| Person / Time | |
|---|---|
| Site: | Shoreham File:Long Island Lighting Company icon.png |
| Issue date: | 03/09/1982 |
| From: | James Smith LONG ISLAND LIGHTING CO. |
| To: | Gilbert R Office of Nuclear Reactor Regulation |
| References | |
| NUDOCS 8203150088 | |
| Download: ML20049J332 (2) | |
Text
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LONG ISLAND LIGHTING COM PANY SHOREHAM NUCLEAR POWER STATION P.O. BOX 613, NORTH COUNTRY ROAD e WADING RIVER. N.Y.11792 u) 4 March 9, 1982 RECEngt) }
I Mr. Robert A.
Gilbert, Project Manager Division of Licensing U.S.
Nuclear Regulatory Commission Washington, D.C.
20555
- 2 Effluent Sampling Shoreham Nuclear Power Station - Unit 1
Dear Mr. Gilbert:
Enclosed is an informal writeup, prepared by Stone & Webster Engineering Corporation, regarding Shoreham's effluent sampling capabilities of radioiodines.
This information was requested by Mr. Chendra of ETSB during a conference call with our staff on March 4, 1982 to be used for preparation of testimony, if necessary, for the upcoming ASLB hearings.
If additional information is needed, please contact Mr.
B.
R.
McCaffrey at 516-733-4791.
Very truly yours, Y
J.
L.
Smith Manager, Special Projects Shoreham Nuclear Power Station RWG:mp Enclosure cc:
J.
Higgins
$8f(
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Attachment to letter dated 3/9/82 The post accident station vent exhaust monitor (RE-126), located in the turbine building, will be accessible during an accident.
i This is consistent with the design of the monitored system.
i An isokinetic probe (RN-126) is used to draw a sample from the station vent.
The low flow requirements of PNL-126 and the requisite for turbulent flow in the sample lines are both fulfilled by the incorporation of an auxiliary pumping system.
The auxiliary pumping system provides a high velocity turbulent flow from RN-126 i'
to the auxiliary pump located close to, and a few feet above PNL-126.
A slip stream sample through a small isokinetic probe, located at the auxiliary pump suction, provides the required flow rate to PNL-126 for sample detection.
Other design considerations which support ANSI-N13.1-1969 require-ments include the sloping of sample lines, the use of 5-diameter i
bends in lieu of elbows, and keeping pipe runs as short as practical.
These features minimize particle deposition in the sample lines and ensure collection and analysis of a more representative sample.
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