ML20217J544

Proposed Tech Specs Eliminating Incorrect Descriptive Info Re Water Inventory in CST Reserved for Hpci/Rcic & Raising CST Min Water Level for Core Spray

ML20217J544
Person / Time
Site:	Fermi
Issue date:	03/27/1998
From:	DETROIT EDISON CO.
To:
Shared Package
ML20217J530	List: ML20217J544 NRC-98-0033, Application for Amend to License NPF-43,eliminating Incorrect Descriptive Info Re Water Inventory in CST Reserved for Hpci/Rcic & Raising CST Min Water Level for Core Spray
References
NUDOCS 9804060325
Download: ML20217J544 (9)

Text

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Enclosure 3 NRC-98-0033 Page 2 q

ENCLOSURE 3 - PART 1 PROPOSED TECHNICAL SPECIFICATION MARK-UP PAGES INCLUDED PAGE(S):

3/4 5-6 j 3/45-8 B 3/4 5-1 I

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i 9804060325 900327 '

PDR ADOCK 05000341

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2ahss fMERGENCY CORE COOLING SYSTEMS -

3/4 5.2 ECCS - SHUTDOWN WITH AMISb1CA7d:D LEVEL OF AT L(:AST 19 FT

&_,-n LIMITING CONDITION FOR OPERATION I

~ ~

3.5.2 At least two of the following s\ \ .-

u s stems shall be OPERABLE:

a.

Core spray system (CSS) subsys s with a subsystem comprised of:

1.

At least two OPERABLE CSS \ ps

2. I k , and An OPERABLE flow path capabi of taking suction from at least one of the following water d urces and transferring the water through the spray sparger to he reactor vessel:

)

a) From the suppression cham er or b) Whenthesuppressioncham\,q,waterlevelislessthanthe limit required in Specific i n 3_.5.3 or is drained from the condens -

ni;il.in, et leid 7 1;C. CC e

nen 1C 7;;t

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= cf a:tu, :wn;unt t; ; u.;' ;f

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b.

Low pressure coolant injection (LPCI) system subsystems with a subsystem comprised of:

1.

At least two OPERABLE LPCI (RHR) pumps, and 2.

j An OPERABLE flow path capable of taking suction from the suppression chamber and transferring the water to the reactor vessel *".

APPLICABILITY: OPERATIONAL CONDITION 4 and 5*.

ACTION:

a.

With one of the above required subsystem (s) inoperable, restore at least two subsystem (s) to OPERABLE status within 4 hours4.62963e-5 days <br />0.00111 hours <br />6.613757e-6 weeks <br />1.522e-6 months <br /> or suspend all operations with a potential for draining the reactor vessel.

b.

With both of the above required subsystems inoperable, suspend CORE ALTERATIONS and all operations with a potential for draining the reactor vessel. Restore at least one subsystem to OPERABLE status within the next4 hours or establish SECONDARY CONTAINMENT INTEGRITY within 8 hours9.259259e-5 days <br />0.00222 hours <br />1.322751e-5 weeks <br />3.044e-6 months <br />.

"The ECCS is not required to be OPERA 8LE provided that the reactor vessel head is removed, the cavity is flooded, the spent fuel pool gates are removed, and water level is maintained within the Ifmits of Specification 3.9.8 and 3.9.9.

• • Upon receipt of a LPCI initiation signal, operator action is required to manually open the torus suction valves to facilitate LPCI operation if the LPCI system is in the RHR shutdown cooling mode of operation per Specification 3.4.9.

y FERMI - UNIT 2 3/4 5-6

• ~

. . EMERGENCY CORE COOLING SYSTEMS 3/4.5.3 SUPPRESSION CHAMBER W ATEl7_ LEVEL IS AT LEAST ,l

{ '

LINITING CONDITION FOR OPERATION \

( ,

\

3.5.3 The suppression chamber shal 0PERABLE: Tbth_se i

a. In 0PERATIONAL CONDITIONSk , 2, and 3 with a contained water volume of at least 121,080 fts, equi lent to a level of 14'4" (-2 inches indication).

b. In OPERATIONAL CONDITIONS 4 nd 5* with a contained volume of at least 64,550 fta, equivalent to a evel of 9'0" (-66 inches indication),

except that the suppression c amber level may be less than the limit or may be drained provided th t:

1. No operations are perfod\that \ have a potential for draining the reactor vessel,

\

2. The reactor mode switch i locked in the Shutdown or Refuel position.

m-

3. The condens_ ate s_toraae tan : nt:in: :t 1:::t 300,000** :::f1:510 l

Of M r,':q fvik n' t; ; level c' 10', a

4. The core spray system is OPERABLE per Specification 3.5.2 with '

an OPERABLE flow path capable of taking suction from the i cnndensate storage tank and transferring the water through the  ;

spray sparger to the reactor vessel.

{f l APPLICABILITY: OPERATIONAL CONDITIONS 1, 2, 3, 4, and 5*. l ACTION:

a. In OPERATIONAL CONDITION 1, 2, or 3 with the suppression chamber water level less than the above Ifmit, restore the water level to within j the limit within I hour or be in at least HOT SHUTDOWN within the '

next 12 hours1.388889e-4 days <br />0.00333 hours <br />1.984127e-5 weeks <br />4.566e-6 months <br /> and in COLD SHUTDOWN within the following 24 hours2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br />.

b. In OPERATIONAL CONDITION 4 or 5* with the suppression chamber water level less than the above limit or drained and the above required  ;

conditions not satisfied, susp md CORE ALTERATIONS and all operations j that have a potential for draining the reactor vessel and lock the reactor mode switch in the Shutdown position. Establish SECONDARY CONTAINMENT INTEGRITY within 8 hours9.259259e-5 days <br />0.00222 hours <br />1.322751e-5 weeks <br />3.044e-6 months <br />.

"The suppression chamber is not required to be OPERABLE provided that the reactor vessel head is removed, the cavity is flooded, or being flooded from the su'ppression pool, the spent fuel pool gates are removed when the cavity is flooded, and the water level is maintained within the limits of Specifications 3 Q and 3.9.9.__ _

e -

• • The 300,000 geliens acceentf fer 150,000 galica; for O Z ond 150,000 gallena fcr ::PCI/ECIC - _

FERMI - UNIT 2 3/4 5-8 I_~JEL E ^/ 6

. . j 3/4.5 EMERGENCY CORE COOLING $YSTEM BASES i

1. j

l. 3/4.5.1 and 3/4.5.2 ECCS - OPERATING and SHUTDOWN I The core spray system (CSS), together with the LPCI mode of the RHR system, is provided to assure that the core is adequately cooled following a loss-of-coolant accident and provides adequate core cooling capacity for all break sizes up to and including the double-ended reactor recirculation line l break, and for smaller breaks following depressurization by the ADS.

The CSS is a primary source of emergency core coolin

'"' *g after

" " ' "the

' " reactor l ':"fenui :MU;'"' '"' ' " '" "**d'"'

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SEE IMSEETMTT ACRGED FBEAbDEE, / ~

The surveillance requirements prniife 18tquitii~ assurance s Inst tne CTS' will be OPERABLE when required. 'Although all active components are test nle 1 and full flow can be demonstrated by recirculation through a test loop during l l reactor operation, a complete functional test requires reactor shutdown. The  ;

l pump discharge piping is maintained full to prevent water hammer damage to '

l piping and to start cooling at the earliest moment.

l l If LPCI injection is required when the LPCI system is in the RHR l shutdown cooling mode of operation, the motor-operated torus suction valves l

will require manual operator realignment to facilitate this ECCS operation, i All other LPCI components will automatically realign or start as necessary. i L The low pressure coolant injection (LPCI) mode of the RHR system is l provided to assure that the core is adequately cooled following a loss-of-.

l coolant accident. Two subsystems, each with two pumps, provide adequate core flooding for all break sizes up to and including the double-ended reactor j recirculation line break, and for small breaks following depressurization by i the ADS.

The surveillance requirements provide adequate assurance that the LPCI l system will be OPERABLE when required. Although all active components are i testable and full flow can be demonstrated by recirculation through a test l

. loop during reactor operation, a complete functional test requires reactor

. shutdown. The pump discharge piping is maintained full to prevent water L hammer damage to piping and to start cooling at the earliest moment.

t The high pressure coolant injection (HPCI) system is provided to assure  !

that the reactor core is adequately cooled to limit fuel clad temperature in the event of a small break in the reactor coolant system and loss of coolant which does'not result-in rapid depressurization of the reactor vessel. The

HPCI system permits the reactor to be shut down while maintaining sufficient l

reactor vessel water ~1evel inventory until the vessel is depressurized. The HPCI system continues to operate until reactor vessel pressure is below the

' pressure at which CSS system operation or LPCI mode of the RHR system operation maintains core cooling. l FERMI - UNIT 2. B 3/4 5-1  !

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4 '. t INSERT

. (Add the following three sentences to the end of the second paragraph of Bases Section 3/4.5.1 and 3/4.5.2, Page B 3/4 5-1) l g 7 N Y X .j In the case when the reactor is shutdown or suppression pool is ~u navailable as a source of

' water, the CSS takes suction from the condensate storage tank for core cooling. For this.

-i .

' condition, the condensate storage tank provides at least 150,000 gallons of available d

. water for CSS. This requires a volume of at least 300,000 gallons of water plus margin to preclude vortex formation for the CSS, equivalent to a level of at least 19 R.

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l . . Enclosure 3 NRC-98-0033 Page 3 ,

l l

-)

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ENCLOSURE 3-PART2 1

PROPOSED TECHNICAL SPECIFICATION REVISED PAGES i i

INCLUDED PAGE(S):  !

l 3/4 5-6  ;

3/45-8 B 3/4 5-1 i I

s l

1 t

2 l ,

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4

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w

1. 1 EMERGENCY' CORE COOLING SYSTEMS.

, :3/4.6.2' ECCS - SHUTDOWN .

LIMI"ING CONDITION-FOR OPERATION 3.5.2 AtLleast two of the following subsystems shall be OPERABLE:-

a. Core' spray system (CSS) subsystems with a subsystem comprised of:

1. At.least two OPERABLE CSS pumps, and_

2.- An OPERABLE flow path capable of taking suction from at least H

one of the, following water sources' and transferring the water q, through the spray sparger to the reactor vessel::

a) From the suppression chamber, or b)- When the suppression chamber water level is less than the limit' required'in Specification 3.5.3 or is drained, from the condensate. storage tank with an indicated level of at' least 19 ft.-

-b. Low pressure coolant injection (LPCI) system subsystems with a subsystem comprised of:-

1.- At least two.0PERABLE LPCI (RHR) pumps, and'

2. - An OPERABLE flow path, capable of taking suction from the-

-suppression chamber and.transferringLthe water to the reactor

> vessel **. <

7 APPLICABILITY: OPERATIONAL CONDITION 4 and'5*. .

ACTION:

a. With one of the above required su'bsystem(s) inoperable, restore at- ,

least two subsystem (s) to OPERABLE status within'4 hours4.62963e-5 days <br />0.00111 hours <br />6.613757e-6 weeks <br />1.522e-6 months <br /> or suspend all operations with a potential for draining the reactor vessel.

L >

i. With both of the above required subsystems inoperable, suspend CORE

~',

ALTERATIONS and all operations with a potential for draining the reactor vessel. Restore at least one subsystem to OPERABLE status within 4 hours4.62963e-5 days <br />0.00111 hours <br />6.613757e-6 weeks <br />1.522e-6 months <br /> or establish SECONDARY CONTAINMENT: INTEGRITY within j the next 8 hours9.259259e-5 days <br />0.00222 hours <br />1.322751e-5 weeks <br />3.044e-6 months <br />.

L T

• The ECCS_is not required to be OPERABLE.provided that the reactor vessel head is removed, the cavity is flooded, the spent fuel pool gates are removed,:and water level is maintained within the limits:of Specification 3.9.8 and 3.9.9.  !

• • Upon receipt of a LNI initiation signal, operator action is required to I manually open the torus suction. valves to facilitate LPCI operation if the LPCI s p em'is~in.the RHR shutdown cooling mode of operation per Specification 3;4.9.2.

l FERMI - UNIT 2 3/4-5-6 Amendment No.

1 l

. i r

( EMERGENCY CORE COOLING SYSTEMS l . 3/4.5.3 SUPPRESSION CHAMBER i I l LIMITING CONDITION FOR OPERATION )

1 3.5.3 The suppression chamber shall be OPERABLE:

a. In OPERATIONAL CONDITIONS 1, 2, and 3'with a contained water volume of at least 121,080 ft*, equivalent to a level of 14'4" (-2 inches indication).

b. In OPERATIONAL CONDITIONS 4 and 5* with a contained volume of at least l '64,550 ft*, equivalent to a level of 9'0" (-66 inches indication),

except that the suppression chamber level may be less than the limit or may be drained provided that:

1. No operations are performed that have a potential for draining the reactor vessel,

2. The' reactor mode switch is locked in the Shutdown or Refuel position,

3. The condensate storage tank water level _is at.least 19 ft., and l

4. The core spray system is OPERABLE per Specification 3.5.2 with an OPERABLE flow path capable of taking suction from the 4

condensate storage tank and transferring the water through the i spray sparger to the' reactor vessel.

APPLICABILITY: OPERATIONAL CONDITIONS 1, 2, 3, 4, and 5*.

ACTION:

a. In OPERATIONAL CONDITION 1, 2, or 3 with the suppression chamber water level less than the above limit, restore the water level to within the limit within I hour or be in at least HOT SHUTDOWN within the next 12 l- hours anci in COLD. SHUTDOWN within the following 24 hours2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br />.

b. In OPERAT!0hAL CONDITION 4 or 5* with the suppression chamber water

, level less than the above limit or drained and the above required.

l conditions not satisfied, suspend CORE ALTERATIONS and all operations that have a potential for draining the reactor vessel and lock the reactor mode switch in the Shutdown position. Establish SECONDARY CONTAINMENT INTEGRITY.within 8 hours9.259259e-5 days <br />0.00222 hours <br />1.322751e-5 weeks <br />3.044e-6 months <br />.

• The suppression chamber is not required to be.0PERABLE provided that the reactor vessel head is removed, the cavity is flooded, or being flooded from the suppression pool, the spent fuel pool gates are removed when the cavity is flooded, and the water level is maintained within the limits of Specifications 3.9.8 and 3.9.9.

FERMI - UNIT 2 3/4 5-8 Amendment No.

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l*.

t 3/4.5 EMERGENCY CORE COOLING SYSTEM

~

BASES

'3/4.5.1 and'3/4.5.2 ECCS - 0PERATING and' SHUTDOWN The core spray system (CSS), together with the LPCI' mode of the RHR system, is provided to assure that the core is adequately cooled following a loss-of-coolant accident and provides adequate core cooling capacity for all break sizes up to and , including the double-ended reactor recirculation line break, and for smaller breaks following depressurization by the ADS.

The CSS is a primary source of emergency core cooling after the reactor vessel ,is depressurized and a source for flooding of the core in case of accidental draining. In the case when the reactor is shutdown or suppression pool is unavailable as a source of water, the CSS takes suction from the condensate storage tank for core cooling. For this condition, the condensate storage tank provides at least 150,000 gallons of milable water for CSS.

This requires a volume of at least 300,000 gallons of water plus margin to preclude vortex formation for the CSS, equivalent to a level of at least 19 ft.

The surveillance requirements >rovide adequate assurance that the CSS i will be OPERABLE when required. Altiough all' active. components are testable and full flow .can be demonstrated by recirculation through a test loop during reactor o)eration, a complete functional-test __ requires reactor shutdown. The pump disc 1arge piping is maintained full to prevent water hammer damage'to piping and to start cooling at the earliest moment.

If LPCI injection is required when the LPCI system.is in the RHR shutdown cooling mode of operation, the motor-operated torus suction valves will require manual operator realignment to facilitate this ECCS operation.

All other LPCI components will automatically realign-or start as necessary.

L The. low pressure coolant injection; provided to assure that'.the core'is adequa(LPCI) mode of the RHR system istely coo coolant accident. Two subsystems, each with two pumps, provide adequate core-flooding for all break sizes up to and including the double-ended reactor recirculation line break, and for small breaks following depressurization by the ADS.

The surveillance requirements provide adequate assurance.that the LPCI system will be OPERABLE when required. . Although all-' active components are testable'and full flow can be demonstrated by recirculation through a test

-loop during reactor operation, a complete functional test requires' reactor shutdown.- The pump discharge piping is maintained full to prevent water .

hammer damage to piping and to start cooling at the earliest moment.  ;

.The high pressure coolant injection

.that the reactor core is adequately cooledto(HPCI)' system is provided toinassure limit fue? clad tempercture ,

j L . the event of:a small break in the reactor coolant s stem and loss of coolant 1 which does not result in rapid depressurization of he reactor vessel' The .

HPCI system permits the reactor to be shut down while maintaining sufficient i reactor vessel water level- inventory until the vessel is depressurized. The .

HPCI system continues to operate until reactor vessel pressure is 'below the q pressure:at which CSS system operation or LPCI mode of the RHR system operation maintains core cooling.

FERMI - UNIT 2

B 3/4 5-I Amendment No.

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