ML17319A963: Difference between revisions
StriderTol (talk | contribs) (Created page by program invented by StriderTol) |
StriderTol (talk | contribs) (Created page by program invented by StriderTol) |
||
(One intermediate revision by the same user not shown) | |||
Line 17: | Line 17: | ||
=Text= | =Text= | ||
{{#Wiki_filter:}} | {{#Wiki_filter:pny6 / ~7. | ||
RE'.ACTOR COOLANT SYSTEM REACTOR COOLANT SYSTEM VENTS LIMITING CONDITION FOR OPER "iTION | |||
: 3. 4.5.2 Two redundant Reactor Coolant System Vent (RCSV) paths shall be OPERABLE. | |||
APPLICABILITY: Modes 1, 2 and 3. | |||
ACTION: | |||
: a. With only one RCSV path OPERABLE, STARTUP and/or POWER OPERATION may continue provided the inoperable path is mairtained closed with power removed from the valve actuators; otherwise be in HOT STANDBY within 6 hours and HOT SHUTDOWN within the following 6 hours. | |||
: b. With no RCSV path OPERABLE within 24 hours either restore at least one path to OPERABLE status or be in HOT SHUTDOWN. | |||
SURVEILLANCE REQUIREMENTS 4.4.5.2 Each RCSV I)4th shall be demonstrated OPERABLE following each refueling by: | |||
: a. 'erifying that the upstream manual isolation valve is locked in the opened positi n. | |||
: b. Operating each remotely controlled valve through one cycle from the control room. | |||
: c. Verifying flow through the RCSV paths during system venting. | |||
Bi,072i0427 Bi0715 PDR ADOCK 050003i5 P PDR | |||
3 2 REACTOR COOLANT SYSTEN VENTS The func t i on of the Reactor Coolant System Vents { RCSV ) i s to remove non -conde n s:-;- | |||
bl es or steam from the reactor vessel head and/o r pressurizer . Th i s sys tem i s de = i gned to mi t i ga te a po s s i bl e cond i t i on of i nadequa te core cool i n g ; i nade-quate na ci ra 1 ci rc u l a ti on , or i nabi 1 i ty to depre s su ri ze to Re s i dua 1 Heat Re:;ova 1 System i n i ti a ti on condi ki on s resulting from the accumulation of non-conden sab e gases in the Reactor Coo 1 an t System. | |||
The reactor vessel head vent and the pressurizer vent a re each des i gned wi th t | |||
re dundan safety :, rade vent pa ths . Ha vi ng e i the r system OPERABLE or having one pa th i n ea ch - sys tem from oppos i te trains OPERABL E i s s u ffi ci ent to meet fi ti the p rovi s i ons of Speci ca on 3 . 4 . 5 . 2 . | |||
P(~u~c UttlT t/OS. 1 AND 2 DONALO C. COOK NUCLEAR PLANT | |||
NOTE: remove or reduce the volume of hydrogen from the containment prior to re-opening the pressurizer vent. | |||
: 12. Return to the appropriate operating instruction following the successful completion of the venting'.of the pressurizer vapor space. | |||
Harch, 1981 Revision 0 Page S | |||
~ g APPENDIX,A PRESSURIZER VENT GUIDELINE VENTING TIME PERIOD | |||
: 1. Convert the containment free-volume to containment volume at standard temperature and pressure conditions. | |||
i-i. i i- tiip) = (i ii' i (-'%Pppf' C ~ ",''r t Pr "'")i(e, <92'R i ~ ) i..) | |||
FT | |||
* Temperature in degrees Rankine ('F + 460) | |||
~If containment pressure has increased'above 14.7 psia then use 14.7 psig as pressure for conservatism. | |||
: 2. Determine the containment hydrogen concentration in vo1ume percent units.. | |||
i NOTE: The. containment hydrogen concentration will be insigificant if there has been no leakage from'.the RCS to the containment.. | |||
: 3. Calculate the. maximum hydrogen volume ~nat can be vented to the containment which will result in a containment. hydrogen concentration 'f less than or equal to 3 volume percent. | |||
Maximum H2 Volume = | |||
(3.0~-Cont. H~ Concentration X Cont. Volume I STP to be Vented | |||
't | |||
: 4. From Curve'0l (RCS Pressure vs H2 Flow Rate) determine the allowable venting'period which will limit the containment hydrogen concentration ta 3 volume percent.. | |||
Y iilti ii Max. Ho Vented (From Step 3) | |||
Z Flow Rate Mins. | |||
March, 1931, Revision 0 Page 6 | |||
~ ~ | |||
~ ~ CURVE | |||
~ ~ | |||
~ g | |||
~' 91'PPENDIX | |||
.A 2000 1500 3CS | |||
'~ressure (PSI) 1000 500 1000.. 2000 3000 4000 5000 | |||
~'-' HYDROGEN FLOW RATE (SCm) me ' | |||
i ~ | |||
ATTACHMENT 4 TO AEP:NRC:0584}} |
Latest revision as of 02:51, 4 February 2020
ML17319A963 | |
Person / Time | |
---|---|
Site: | Cook ![]() |
Issue date: | 07/15/1981 |
From: | INDIANA MICHIGAN POWER CO. (FORMERLY INDIANA & MICHIG |
To: | |
Shared Package | |
ML17319A959 | List: |
References | |
NUDOCS 8107210427 | |
Download: ML17319A963 (8) | |
Text
pny6 / ~7.
RE'.ACTOR COOLANT SYSTEM REACTOR COOLANT SYSTEM VENTS LIMITING CONDITION FOR OPER "iTION
- 3. 4.5.2 Two redundant Reactor Coolant System Vent (RCSV) paths shall be OPERABLE.
APPLICABILITY: Modes 1, 2 and 3.
ACTION:
- a. With only one RCSV path OPERABLE, STARTUP and/or POWER OPERATION may continue provided the inoperable path is mairtained closed with power removed from the valve actuators; otherwise be in HOT STANDBY within 6 hours6.944444e-5 days <br />0.00167 hours <br />9.920635e-6 weeks <br />2.283e-6 months <br /> and HOT SHUTDOWN within the following 6 hours6.944444e-5 days <br />0.00167 hours <br />9.920635e-6 weeks <br />2.283e-6 months <br />.
- b. With no RCSV path OPERABLE within 24 hours2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br /> either restore at least one path to OPERABLE status or be in HOT SHUTDOWN.
SURVEILLANCE REQUIREMENTS 4.4.5.2 Each RCSV I)4th shall be demonstrated OPERABLE following each refueling by:
- a. 'erifying that the upstream manual isolation valve is locked in the opened positi n.
- b. Operating each remotely controlled valve through one cycle from the control room.
- c. Verifying flow through the RCSV paths during system venting.
Bi,072i0427 Bi0715 PDR ADOCK 050003i5 P PDR
3 2 REACTOR COOLANT SYSTEN VENTS The func t i on of the Reactor Coolant System Vents { RCSV ) i s to remove non -conde n s:-;-
bl es or steam from the reactor vessel head and/o r pressurizer . Th i s sys tem i s de = i gned to mi t i ga te a po s s i bl e cond i t i on of i nadequa te core cool i n g ; i nade-quate na ci ra 1 ci rc u l a ti on , or i nabi 1 i ty to depre s su ri ze to Re s i dua 1 Heat Re:;ova 1 System i n i ti a ti on condi ki on s resulting from the accumulation of non-conden sab e gases in the Reactor Coo 1 an t System.
The reactor vessel head vent and the pressurizer vent a re each des i gned wi th t
re dundan safety :, rade vent pa ths . Ha vi ng e i the r system OPERABLE or having one pa th i n ea ch - sys tem from oppos i te trains OPERABL E i s s u ffi ci ent to meet fi ti the p rovi s i ons of Speci ca on 3 . 4 . 5 . 2 .
P(~u~c UttlT t/OS. 1 AND 2 DONALO C. COOK NUCLEAR PLANT
NOTE: remove or reduce the volume of hydrogen from the containment prior to re-opening the pressurizer vent.
- 12. Return to the appropriate operating instruction following the successful completion of the venting'.of the pressurizer vapor space.
Harch, 1981 Revision 0 Page S
~ g APPENDIX,A PRESSURIZER VENT GUIDELINE VENTING TIME PERIOD
- 1. Convert the containment free-volume to containment volume at standard temperature and pressure conditions.
i-i. i i- tiip) = (i ii' i (-'%Pppf' C ~ ",r t Pr "'")i(e, <92'R i ~ ) i..)
FT
- Temperature in degrees Rankine ('F + 460)
~If containment pressure has increased'above 14.7 psia then use 14.7 psig as pressure for conservatism.
- 2. Determine the containment hydrogen concentration in vo1ume percent units..
i NOTE: The. containment hydrogen concentration will be insigificant if there has been no leakage from'.the RCS to the containment..
- 3. Calculate the. maximum hydrogen volume ~nat can be vented to the containment which will result in a containment. hydrogen concentration 'f less than or equal to 3 volume percent.
Maximum H2 Volume =
(3.0~-Cont. H~ Concentration X Cont. Volume I STP to be Vented
't
- 4. From Curve'0l (RCS Pressure vs H2 Flow Rate) determine the allowable venting'period which will limit the containment hydrogen concentration ta 3 volume percent..
Y iilti ii Max. Ho Vented (From Step 3)
Z Flow Rate Mins.
March, 1931, Revision 0 Page 6
~ ~
~ ~ CURVE
~ ~
~ g
~' 91'PPENDIX
.A 2000 1500 3CS
'~ressure (PSI) 1000 500 1000.. 2000 3000 4000 5000
~'-' HYDROGEN FLOW RATE (SCm) me '
i ~
ATTACHMENT 4 TO AEP:NRC:0584