ML19260D909
| ML19260D909 | |
| Person / Time | |
|---|---|
| Site: | Beaver Valley |
| Issue date: | 02/08/1980 |
| From: | Dunn C DUQUESNE LIGHT CO. |
| To: | Schwencer A Office of Nuclear Reactor Regulation |
| References | |
| RTR-NUREG-0578, RTR-NUREG-578 NUDOCS 8002120585 | |
| Download: ML19260D909 (5) | |
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'Af (412) 456 6000
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15J ' 9 February 8, 1980 Director of Nuclear Reactor Regulation United States Nuclear Regulatory Commission Attn:
A. Schwencer, Chief Operating Reactors Branch No. 1 Division of Operating Reactors Washington, DC 20555
Reference:
Beaver Valley Power Station, Unit No. 1 Docket No. 50-334 Results of Review of Mechanical Systems Which Enter and Exit Containment - NUREG 0578, Section 2.1.4 Gentlemen:
We have completed our review of all mechnical systems which enter and exit the containment structure to determine whether they have been properly categorized as essential or nonessential. The attached table presents a list of the essential systems and penetration numbers for two situations:
1.)
after initiation of Containment Isolation, Phase A (CIA), and 2.)
after initiation of Containment Isolation, Phase B (CIB).
The review of the mechanical systems indicates that no recategorization of systems is necessary, and therefore, no modifications to the containment isolation design is required.
If you have any questions concerning this response, please contact my office.
Very truly yours, Oy b C. N. Dunn Vice President, Operations ho37 s
1950 27S f/,
800620 sM
DUQUES!C LIGHT COMPANY Beaver Valley Power Station Unit No. 1 Essential and Nonessential Systems and Containment Penetrations (NUREG 0578 - Section 2.1.4)
Two lists are presented for essential and nonessential systems and containment penetrations.
The first list are those sytems which are essential or nonessential following the initiation of a Safety Injection (SI) and Containment Isolation Phase A (CIA).
The second list are those systems which are essential or nonessential following initiation of Containment Isolation Phase B (CIB).
The bases for selection of the essential systems following a DBA were discussed in the Final Safety Analysis Report, Section 5.3 and Table 5.3-1.
For a further discussion of these sytems, refer to the FSAR.
Essential and Nonessential Systems Following CIA A.
Essential Systems and Penetration Numbers 1.
High Head Safety Injection 7, 33, 96, 113 2.
Low Head Safety Injection 60, 61, 62, 68, 69 3.
Recirculation Spray 66, 67, 70, 71 4.
Quench Spray 63, 64 5.
Component Cooling Water 8, 9, 11, 14, 16, 17, 18, 25, 26 27, 58 6.
RC Pump Seal Water 19, 35, 36, 37 7.
RC Charging and Letdown 15, 28 8.
Recirculation Spray Heat Exchangers River Water 79, 80, 81, 82, 83, 84, 85, 86 9.
Sbin Condenser Ejector Vent 89 i950 279
Essential and Nonessential Systems and Containment Penetrations (NUREG 0578 - Section 2.1.4)
Attachment B.
Nonessential Systems and Penetration Numbers 1.
Sampling System 55-1, 55-4, 56, 97-1, 97-2, 97-4, 105 2.
Component Cooling Water 1,2,4,5 3.
Steam Generator Blcwdown 39, 40, 41 4.
Containment Air >bnitors 43, 44 5.
Containment Purge Supply & Exhaust 90, 91 6.
Containment Vacuum Pump & Hydrogen Recombiner Suctions 92, 93 7.
Refueling Cavity Purification 103, 104 8.
SI Accumulator Makeup 20 9.
Residual Heat Removal 24 10.
Primary Drains Pump 29 11.
Containment Sa=p Pump 38 12.
Compressed Air 42 13.
Primary Grade Water to Pressurizer Relief Tank 45 14.
Charging Fill Header 46 15.
Instrument Air Crosstie 47 16.
Primary Vent Header 48 17.
Nitrogen Supply to SI Accumulators and Pressurizer Relief Tank 49, 53 18.
Containment Leakage Ibnitoring 55-2, 57, 97-3 19.
Post DBA Hydrogen Control Discharge to Containment 87, 88 20.
Containment Vacuum Ejector 94 21.
SI Accumulator Test Line 106 22.
Pressure Dead Weight Calibrator 110 23.
Steam Generator Feedwater 76, 77, 78 24.
> bin Steam 73, 74, 75 C) h(I
- }
Essential and Nonessential Systems and Containment Penetrations (NUREG 0578 - Section 2.1.4)
Attachment Essential and Nonessential Systems Following CIB A.
Essential Systems and Penetration Numbers 1.
High Head Safety Injection 7, 33, 96, 113 2.
Low Head Safety Injection 60, 61, 62, 68, 69 3.
Recirculation Spray 66, 67, 70, 71 4.
Quench Spray 63, 64 5.
RC Pump Seal Water 35, 36, 37 6.
Recirculation Spray Heat Exchangers River Water 79, 80, 81, 82, 83, 84, 85, 86 B.
Nonessential Systems and Penetration Numbers 1.
Sampling System 55-1, 55-4, 56, 97-1, 97-2, 97-4, 105 2.
RC Charging and Letdown 15, 28 3.
Component Cooling Water 1, 2, 4, 5, 8, 9, 11, 14, 16, 17, 18, 25, 26, 27, 58 4.
Main Condenser Ejector Vent 89 5.
RC Pump Seal Water Return 19 6.
Steam Generator Blowdown 39, 40, 41 7.
Containment Air Monitors 43, 44 8.
Containment Purge Supply and Exhaust 90, 91 9.
Containment Vacuum Pump & Hydrogen Recombiner Suctions 92, 93 10.
Refueling Cavity Purification 103, 104 11.
SI Accumulator Makeup 20 12.
Residual Heat Removal 24 13.
Primary Drains Pump 29 14.
Containment Sump Pump 38 15.
Compressed Air 42 16.
Primary Grade Water to Pressurizer Relief Tank 45 17.
Charging Fill Header 46 3 9 5 0,2
Essential and Nonessential Systems and Containment Penetrations (NUREG 0578 - Section 2.1.4)
Attachment B.
Nonessential Systems and Penetration Numbers (continued) 18.
Instrument Air Crosstie 47 19.
Primary Vent Header 48 20.
Nitrogen Supply to SI Accumulators and Pressurizer Relief Tank 49, 53 21.
Containment Leakage Sonitoring 55-2, 57, 97-3 22.
Post DBA Hydrogen Control Discharge to Containment 87, 88 23.
Containment Vacuum Ejector 94 24, SI Accumulator Test Line 106 25.
Pressure Dead Weight Calibrator 110 26.
Steam Generator Feedwater 76, 77, 78 27.
Main Steam 73, 74, 75 i950 282