ML20043D567
| ML20043D567 | |
| Person / Time | |
|---|---|
| Site: | Davis Besse  |
| Issue date: | 05/31/1990 |
| From: | TOLEDO EDISON CO. |
| To: | |
| Shared Package | |
| ML20043D561 | List: |
| References | |
| 1781, NUDOCS 9006080238 | |
| Download: ML20043D567 (2) | |
Text
.
.' Dockot Nu:bar 50-346 1
Lic:nse Number NPF-3 i
Serial Number 1781 Attachment I Page 6 ADDlil0NAL CHANCUa ppa!GUMy 7 PRUf O!LD ::f irr;;;;
CONTA1NMENT SYSTEM 5 Se'ialNo. zuj pm,f4-w 3/4.6.4 COfeUSTitLE GA5 CONTROL HYD40stN ANALYZER 5 t
1,IMITfMS CONDfTION FOR OPERATION t
3.6.4.)
Two indeponeent contaitument hydrogen analysers sha)) be OPERABLE.
j APPLICA3!LITYt MODE 5 ) and 2.
ACTIONt a.With one hyerogen analyser inoperoble, restore the inoperable analyser te OPERABLE status within 30 days or be in at least HOT STANOBY within the i
next 6 hours6.944444e-5 days <br />0.00167 hours <br />9.920635e-6 weeks <br />2.283e-6 months <br />.
- 6. M/A fotA Ayl<oyan one/pers shoperable, cesfore ad lensi one ene/yse to onassis sAedus w,AA,h 7a Aows ebe h el leas A MerJrAA>0sY widAr'n the esf 4 Anws SURVIILLANCE REQUIRDENT5 4.o.4.1 Each hydrogen analyzer sha)) be demonstrated OPERABLE at least once per 92 days on a STAGEERED TEST SA515 by performing a CHAISEL CALIRRATION using sample gases containingt i
a.
Zero volume percent hydrogen, balancs nitrogen, and L
b.
2.510.5 volume peNant hyerogen, balance nitrogen.
j l
l l
l l
900608023G 900531
{DR ADOCK 05000346 PDC DAVIS-8E15E, UNIT 1 3/4 6 23 i
1
_ ____________________j
. Docktt Nurbar 50-346 4
9,,.
Lic7 s2 Numb 2r NPF-3 Ser!.a1 Number.2781 On"*"' '
INFORKA"0N ONLY l l
l 1
CONTA!NMTVT S g i
),A, ' CI l
3/4.6.4 COMUITTILE RAS CLnan.
The OPERABILITY of the Hydrogen Analysert. Containment Hydrogen-and Myerogen Purge systne ensures that this egv1pment Oflution Sysus will be avai' able to maintain the mentous hydrogen concentration wtthi L
the contatteent vessel at or Delow three volise percent following a LOCA.
The two reevneant Hydrogen Analysers determine the content of hydre.
I gen within the containment vessel.
t I
e' The Containment Hydrogen Ollution (CND) System consists of two full t
capacity, reeunaant, rotary, positive displacement type blowers to supply air to the containment.
The CHO System controls the hydrogee concentre..
tim by the aedition of air to the containment vessel, resulting in a pressurisation of the. containment and suppression of the hyerogen volume
- fraction.
4 h
t The Containment-Nyerogen Purge Systen Filter Unit functions as a backup to the CHO System ane is designes to release air from the coa.
tainment atmosonere through a HEPA filter and charcoal filter prior to discharge to the station vent.
3/4.6.5 $H!!LD BUILD!NB J/4.6.5.1 EMER8tNCY YENTfLATION SYSTEM The OPERABILITY of the emergency ventilation systems ensures that containment vessel leasage occurring during LOCA conditions into the annulus will be filtered through the HEPA filters and c.harcoal adsorder 1
trains prior to discharge to the atmosphere. This reevirement is neces.-
sary to meet the assusurtions used in the safety analyses and limit the site boundary radiation doses to within the limits of 10 CFR 100 during LOCA conditions.
"5RTI5-REIst, UgrT 1 5 3/4 6 4 Amenement No.16
-