ML20049J345
| ML20049J345 | |
| 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 8203150140 | |
| Download: ML20049J345 (3) | |
Text
-~
LONG ISLAND LIGHTING COM PANY
,,L,,C,'O, F
SHOREHAM NUCLEAR POWER STATION f f P.O. HOX G10, NORTH COUNTRY ROAD e WADING RIVER, N.Y.11792 s.
g.
t 1 i March 9, 1982 N It @ h f 9 '
g kI YARJ]$
Mr. Robert A.
Gilbert, Project Manager 2'
dll5 Division of Licensing s
U.S.
Nuclear Regulatory Commission p
f p
Washington, D.C.
20555 g7 ha, g l Diesel Generator Relays Shoreham Nuclear Power Station - Unit 1
Dear Mr. Gilbert:
This will confirm information given to Bob Giardina by Al Greenfeld on March 5, 1982 and March 8, 1982:
Treatment of ground under Diesel Generator Room Air Intakes It is planned to use crushed stone below the Diesel Generator Room Air Intakes.
Elevation at base of the wall is 24.0 ft.
(see drawing FY3D attached).
Elevation of air intakes is 31'-6".
An E&DCR has been written to change the grass cover to crushed stone.
Are there filters in the combustion air and room ventilation intakes?
A 35,000 CFM ventilation system, which opens only when the diesel operates, has a filter for the combustion air intake but not for room ventilation.
When this ventilation system is not operating, its inlet and outlet dampers are closed and room ventilation is provided by a separate 1350 CFM exhaust fan with intake by infiltration.
Are relays with bifurcated contacts used?
Are they enclosed, dust tight?
The Diesel Generator Relays do not have bifurcated contacts.
Bifurcated contacts are usually limited to relays with low vcitage/
low current signals, and are not designed to have a deliberate wiping action.
Generally they are not found in standard, general 0
8203150140 820309 fl l PDR ADOCK 05000322 A
~
March 9, 1982 fir. Robert A. Gilbert Page 2 purpose industrial relays.
The relays at Shoreham are in cabinets with gasketed doors, which are mechanically latched closed.
The Diesel Generator control panels are NEMA 12, modified, that is louvers required for cooling are protected by dust filters and, where panels have control switches, meters or indicating lights mounted through them, this has been done in a dust tight manner.
Very truly yourt,,
q
, /\\, /
J.
L. Smith l
Manager, Special Projects Shoreham Nuclear Power Station RWG:mp Attachment cc:
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