ML20126D898: Difference between revisions

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=Text=
=Text=
{{#Wiki_filter:-.                  -      .      -    .  - - -.      .          . _    ..
{{#Wiki_filter:-.
Docket Number 50-346
Docket Number 50-346 License Number NPF-3 l
:      License Number NPF-3 l     Serial Number 2071
Serial Number 2071
      'A'ttachment
'A'ttachment Page 5 11 CONTAINMENT SYSTEug CONTAINMENT WYOROGEN DILUTTON SYSTEM i-LIMITING CONDITTON FOR OPERATION 1.6.4.3 Two'indecencent containment hydrogen dilution systems shall be OPERABLE.
;'      Page 5                         _
11 CONTAINMENT SYSTEug                                 ,                          ,
CONTAINMENT WYOROGEN DILUTTON SYSTEM i-LIMITING CONDITTON FOR OPERATION 1.6.4.3 Two'indecencent containment hydrogen dilution systems shall be
!                              OPERABLE.
APPLICABILITY: MODES 1 and 2.
APPLICABILITY: MODES 1 and 2.
l                               ACTION:
l ACTION:
ci, ?With one containment nyorogen dilution system inocersole. restore tne /Ol-N
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{
,                             j inoperable system to OPERA 8LE status within 30 days or ce in at least
ci, ?With one containment nyorogen dilution system inocersole. restore tne /
                                                                                =      m    _%
inoperable system to OPERA 8LE status within 30 days or ce in at least j
;                                %AN08Y_within_the next 6 hours.           h ,.~ s 5 !** W =llc ,N skic 6.f L.vif4 h,%. Le% ~1 hy at lu k ou J. [vG sy 1 hs~ h cfEA.p r & Ll wo% L 71h.un i
%AN08Y_within_the next 6 hours.
                                  ** k *% af luk I%7 17wahre w,4,,i
h,.~ s 5 !** W =llc,N skic
                                                                      ~    =
=
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m 6.f L.vif4 h,%. Le% ~1 hy at lu k ou J. [vG sy 1 hs~ h cfEA.p r & Ll wo% L 71h.un i
** k *% af luk I%7 17wahr w,4,,i 4Lrud i kwt.
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1 4.6.4.3 Each containment hydrogen dilution system shall be demonstrated     '
1 4.6.4.3 Each containment hydrogen dilution system shall be demonstrated OPERABLE at least once per 92 days on a STAGGERED TEST BASIS by:
,                                OPERABLE at least once per 92 days on a STAGGERED TEST BASIS by:   .
i
i
)                                       a. Verifying snat the system can be started on coerator action in the control room, and l
)
i
a.
: b. Verifying that the system operates for at least 15 minutes and the blower develops a discharge pressu re of 15 psig.
Verifying snat the system can be started on coerator action l
l 5
in the control room, and i
b.
Verifying that the system operates for at least 15 minutes and l
the blower develops a discharge press re of 15 psig.
u 5
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1 d
I a
I a
f
f DAVIS-BESSE. UNIT 1 3/4 6-25 9212280214 921221 PDR ADOCK 05000346 P
!                                  DAVIS-BESSE. UNIT 1                   3/4 6-25 9212280214 921221 PDR     ADOCK 05000346 P                     PDR
PDR


        * '          '        Docket Number 50-346 License Number NPF-3
Docket Number 50-346 License Number NPF-3 Serial Numbar 2071 Attachment Page 6 CONTAINMENT SYSTEMS 4
                        ,      Serial Numbar 2071 Attachment
i
,                            Page 6 4
. BASES i
CONTAINMENT SYSTEMS i
3/4.6.4 COMBUSTIBLE GAS CONTROL j
                                      . BASES i
The OPERABILITY of the Hydrogen Analyzers, Containment Hydrogen Dilution System, and Hydrogen Purge System ensures that this equipment 1
3/4.6.4 COMBUSTIBLE GAS CONTROL j                                             The OPERABILITY of the Hydrogen Analyzers, Containment Hydrogen 1
will be available to maintain the maximum nydrogen concentration within the containment vessel at or below three volume percent following a LOCA.
Dilution System, and Hydrogen Purge System ensures that this equipment will be available to maintain the maximum nydrogen concentration within the containment vessel at or below three volume percent following a LOCA.
The two redundant Hydrogen Analyzers determine the content of hydro-gen within the containment vessel. The Hydrogen Analyzers, although they have their OPERABILITY requirements in this Specification, are considered part of the cost-accident monitoring instrumentation of Specification 3/4.3.3.5, Post-Accident Monitoring Instrumentation.
The two redundant Hydrogen Analyzers determine the content of hydro-gen within the containment vessel. The Hydrogen Analyzers, although they
The Cont'ainment Hydrogen Dilution (CHD) System consists of two full capacity, redundant, rotary, positive displacement type blowers to sucoly air to the containment. The CHD System controls the hydrogen concentra-i tion by the addition of air to the containment vessel, resulting in a pressurization of the containment and suppression of the hydrogen volume i
:                                      have their OPERABILITY requirements in this Specification, are considered part of the cost-accident monitoring instrumentation of Specification 3/4.3.3.5, Post-Accident Monitoring Instrumentation.
fraction.
:                                            The Cont'ainment Hydrogen Dilution (CHD) System consists of two full
N'
'                                      capacity, redundant, rotary, positive displacement type blowers to sucoly i
~~
air to the containment. The CHD System controls the hydrogen concentra-tion by the addition of air to the containment vessel, resulting in a i
7~
pressurization of the containment and suppression of the hydrogen volume fraction.                                                           N'             ~~
p m pe b J v,1 i
                                    ' 7~                     -
j The Containment Hydrogen Purge System Filter Unit functions}ee-t-I
p m pe b J v,1 i                             j             The Containment Hydrogen Purge System Filter Unit functions}ee-t-I
$_ kd6 3'the CFID systMiWiTdesigned to release air from the cofi-~"
                              $_ kd6 3'the CFID systMiWiTdesigned to release air from the cofi-~"
l ta'iMeist atmosphere through a HEPA filter and charcoal filter prior to l
l                                     ta'iMeist atmosphere through a HEPA filter and charcoal filter prior to                             %
Alignargetothestationvent.
l
g 3/4.6.5 SHIELD BUILDING
_  Alignargetothestationvent.                                                                               '
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3/4.6.5.1 EMERGENCY VENTILATION SYSTEM The OPERABILITY of the emergency ventilation systems ensures that
          ,                          3/4.6.5 SHIELD BUILDING
[
[
                                ;    3/4.6.5.1 EMERGENCY VENTILATION SYSTEM The OPERABILITY of the emergency ventilation systems ensures that j                        [            containment vessel leakage occurring during LOCA conditions into the-(
containment vessel leakage occurring during LOCA conditions into the-j
(
annulus will be filtered through the HEPA filters and charcoal adsorber l
annulus will be filtered through the HEPA filters and charcoal adsorber l
1 trains prior to discharge to the atmosphere. This requirement is neces-sary ta meet the assumptions used in the safety analyses and limit the site bouncary radiation doses to within the limits of 10 CFR 100 during 3
trains prior to discharge to the atmosphere. This requirement is neces-1 sary ta meet the assumptions used in the safety analyses and limit the site bouncary radiation doses to within the limits of 10 CFR 100 during LOCA conoitions.
LOCA conoitions.
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by % ~ nce- L b syrk~y.C,13,6                       L                        m l4g..f ,,,L i, _ g DAVIS-BESSE, UNIT 1                   B 3/4 6-4                 Amenament No. 46,167 n, --- -          -                      w   - , ,    w e k < --   - -          ,-~         ~r   n>-     ~v-N --. n s ,     w   ,w}}
L DAVIS-BESSE, UNIT 1 B 3/4 6-4 Amenament No. 46,167 n,
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Latest revision as of 19:41, 12 December 2024

Proposed Tech Specs Revising TS 3/4.6.4.3 Containment Hydrogen Dilution Sys & Associated Bases 3/4.6.4,Combustible Gas Control,To Add an Addl Action Statement to Apply When Both Sys Inoperable & Allow 72 H to Return Sys to Normal
ML20126D898
Person / Time
Site: Davis Besse Cleveland Electric icon.png
Issue date: 12/21/1992
From:
CENTERIOR ENERGY
To:
Shared Package
ML20126D861 List:
References
NUDOCS 9212280214
Download: ML20126D898 (2)
v • d • e


Text

-.

Docket Number 50-346 License Number NPF-3 l

Serial Number 2071

'A'ttachment Page 5 11 CONTAINMENT SYSTEug CONTAINMENT WYOROGEN DILUTTON SYSTEM i-LIMITING CONDITTON FOR OPERATION 1.6.4.3 Two'indecencent containment hydrogen dilution systems shall be OPERABLE.

APPLICABILITY: MODES 1 and 2.

l ACTION:

Ol-N

{

ci, ?With one containment nyorogen dilution system inocersole. restore tne /

inoperable system to OPERA 8LE status within 30 days or ce in at least j

%AN08Y_within_the next 6 hours6.944444e-5 days <br />0.00167 hours <br />9.920635e-6 weeks <br />2.283e-6 months <br />.

h,.~ s 5 !** W =llc,N skic

=

m 6.f L.vif4 h,%. Le% ~1 hy at lu k ou J. [vG sy 1 hs~ h cfEA.p r & Ll wo% L 71h.un i

    • k *% af luk I%7 17wahr w,4,,i 4Lrud i kwt.

e

=

_ ~ -

~

1 4.6.4.3 Each containment hydrogen dilution system shall be demonstrated OPERABLE at least once per 92 days on a STAGGERED TEST BASIS by:

i

)

a.

Verifying snat the system can be started on coerator action l

in the control room, and i

b.

Verifying that the system operates for at least 15 minutes and l

the blower develops a discharge press re of 15 psig.

u 5

1 d

I a

f DAVIS-BESSE. UNIT 1 3/4 6-25 9212280214 921221 PDR ADOCK 05000346 P

PDR

Docket Number 50-346 License Number NPF-3 Serial Numbar 2071 Attachment Page 6 CONTAINMENT SYSTEMS 4

i

. BASES i

3/4.6.4 COMBUSTIBLE GAS CONTROL j

The OPERABILITY of the Hydrogen Analyzers, Containment Hydrogen Dilution System, and Hydrogen Purge System ensures that this equipment 1

will be available to maintain the maximum nydrogen concentration within the containment vessel at or below three volume percent following a LOCA.

The two redundant Hydrogen Analyzers determine the content of hydro-gen within the containment vessel. The Hydrogen Analyzers, although they have their OPERABILITY requirements in this Specification, are considered part of the cost-accident monitoring instrumentation of Specification 3/4.3.3.5, Post-Accident Monitoring Instrumentation.

The Cont'ainment Hydrogen Dilution (CHD) System consists of two full capacity, redundant, rotary, positive displacement type blowers to sucoly air to the containment. The CHD System controls the hydrogen concentra-i tion by the addition of air to the containment vessel, resulting in a pressurization of the containment and suppression of the hydrogen volume i

fraction.

N'

~~

7~

p m pe b J v,1 i

j The Containment Hydrogen Purge System Filter Unit functions}ee-t-I

$_ kd6 3'the CFID systMiWiTdesigned to release air from the cofi-~"

l ta'iMeist atmosphere through a HEPA filter and charcoal filter prior to l

Alignargetothestationvent.

g 3/4.6.5 SHIELD BUILDING

[

3/4.6.5.1 EMERGENCY VENTILATION SYSTEM The OPERABILITY of the emergency ventilation systems ensures that

[

containment vessel leakage occurring during LOCA conditions into the-j

(

annulus will be filtered through the HEPA filters and charcoal adsorber l

trains prior to discharge to the atmosphere. This requirement is neces-1 sary ta meet the assumptions used in the safety analyses and limit the site bouncary radiation doses to within the limits of 10 CFR 100 during LOCA conoitions.

3 w

ha k h b Ya CHD Syk ud f Qa nt-H krp wy P

Sp% 4 e by % ~ nce-L b syrk~y.C,13,6 m l4g..f,,,L i, _ g y

L DAVIS-BESSE, UNIT 1 B 3/4 6-4 Amenament No. 46,167 n,

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,-~

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~v-N --. n s,

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