ML20067A270
| ML20067A270 | |
| Person / Time | |
|---|---|
| Site: | Shoreham File:Long Island Lighting Company icon.png |
| Issue date: | 07/30/1975 |
| From: | Wofford A LONG ISLAND LIGHTING CO. |
| To: | Stolz J Office of Nuclear Reactor Regulation |
| Shared Package | |
| ML20067A201 | List: |
| References | |
| FOIA-82-455 SNRC-56, NUDOCS 8212010393 | |
| Download: ML20067A270 (3) | |
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V Mr. J.
F. Stolz, Chief j
Light Water Reactors Branch 2-1 E-q.
Division of Reactor Licensing 3
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U. S. Nuclear Regulatory Commission Q'l4y'/" %
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BWR h rk II Containment M'i Shoreham Nuclear Power Station - Unit 1 Docket No. 50-322
Dear Mr. Stolz:
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In compliance with the schedule submitted to you as attach-ment A to our letter of June 3, 1975, we are forwarding under separate cover 15 sets of Shoreham suppression pool
.and relief valve drawings..The 12 d'rawings comprising each 4
set are identified in enclosure 1 by title and figure numbers.
Additional information on the operation of the Shoreham safety relief valves is shown in enclosu're2.
A more detailed l
description of these valves under Prompt Relief Trip (PRT) and Automatic Depressurization System (ADS) operation will i)e' submitted'in September, 1975 with our FSAR.
The 11 safety.
relief valve discharge pipes are each centrally located in one of the 14 radial sections of the suppression pool.
The seven valves assigned to ADS are located in alternate sections of the pool.
This information is provided in response to item 1, enclosure 1 of your letters of April 18 and 21, 1975.
1 Very truly yours, i
. Enclosures
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1 i* R Oh^lA 8212010393 821109
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SUPPRESSION CHAMBER DRAWINGS Mechanical Figure 6-M-1 Composite Piping - Primary Containment - Plan Elevation 20'-0" to 40'-0" - North
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Figure 6-M-2 Composite Piping - Primary Containmen't - Plan Elevation 20 '-0" to 4 0 '-0". - South Figure 6-M-3 Composite Piping - Primary Containment - Plan Elevation 40'-0" to 63'-0" - North Figure 6-M-4 Composite Piping - Primary Containment - Plan Elevation 40'-0" to 63'-0" - South Figure 6-M-5 Composite Piping - Suppressiva Pool
'Section 10'-10 Figure 6-M-6 Composite Piping - Suppression Pool - Section 11-11
' Figure 6-M-7 Drywell Vent Piping - Sheet 1 Figure 6-M-8 Drywell Vent Piping - Sheet 2 Figure 6-M-9 Drywell Vent Piping - Sheet 3 Figure 6-M-10 Drywell Vent Piping - 6heet 4 Structural Figure 6-S-1 Suppression Pool Platforms - Sheet 1 Figure 6-S-2 Suppression Pool Platforms - Sheet 2 O
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SAFETY RELIEF VALVE OPERATION Quantity Discharge Size II)
Set Pressure Capacity at Actuation (2)
(inches)
(psig) 3% overpressure PRT AD&
(1b/hr) 4 10 1090 869,000 4'
O 4
10 1100 876,800 4
4 3
10 1110 884,700 3
3 (1) A11 discharge lines increase to 12 inches immediately below drywell floor.
(2) A11 valves are actuated by overpressure beyond their respective set points in addition to the manual / automatic modes of actuation for those valves assigned to PRT and ADS functions.
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