ML20100B742
| ML20100B742 | |
| Person / Time | |
|---|---|
| Site: | Vogtle  |
| Issue date: | 09/19/1995 |
| From: | AFFILIATION NOT ASSIGNED |
| To: | |
| References | |
| OLA-3-I-MOS-261, NUDOCS 9601220291 | |
| Download: ML20100B742 (1) | |
Text
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Estimate of DG Daily Air Leakaaem US W Potential Leakage Locationa5 00 20 P 4.50 f.E Leakage thru.006 orifices to seppor lines 4
Il( M EIING., U..WiCl Leakage to sensor lines w/o.606 orifices ji j 305 cu. ft.*
Leakage from vented elements in the control logic 4
Air Receiver i
m Leakage to vented solenoid valves Leakage in rrttings in the 60 psig supply 4 Leakage in fittings in the 250 psig supply 4
Air Comp.
Ne '
Assume 90 F (549.6R) 7 f
Supply lines to Control Air l
305 cu. ft.'
Air Receiver l
NY..,ST. 5.,~ STAG
-g Air Com p.
Start 225 psig St:p 250 psig Estimated Air Leakage i
1 atm = 14.7 psia 225 psig = 239.7 psia = 16.3 atm., 250 psig = 264.7 psia = 18.0 atm.
ccf = standard cubic feet (at STP) ccf per tank @ 225 psig = (16.3 atm) x 305cu. ft.* x 491.6 R / 549.6 R = 4447 scf.
ccf per tank @ 250 psig = (18.0 atm) x 305cu. ft.* x 491.6R / 549.6 R = 4911 scf.
Volume added per cycle = 464 scf Compressor capacity = 76 scfm' Running time per cycle = 464 scf / 76 scfm = 6.1 minutes Assume each compressor cycles on 1 time per 8 hour9.259259e-5 days <br />0.00222 hours <br />1.322751e-5 weeks <br />3.044e-6 months <br /> shift to make up for leakage:
This is 6 additions of 464 scf of air per day = 2784 scfI day
= 116 scf / hour
)
9601220291 950919
= 1.93 scf / minute PDR ADOCK 05000424 C
=.032 scf / second 1
' NUCLEAR REGULATORY COMMIESION ooctoiwo. so.424/425 Ow, EXHl83lTNO. T ' 3 I
- Data from FSAR Table 9.5.6-1 (Board Exh. #3)
In the matter of Georoia Kwmr Co. et al Voatie Units 1 & 2 l
O Staff O Applicant ETTIEenanor O oe=r O Identified @elved O Regte,d Reporkr fD o.a. 9 / M /W witnoc.
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