ML20084H083

Forwards Addl Proposed Changes to Tech Specs Published for Comment in Dec 1983.Changes Revise out-of-svc Times for Components from 72 H to 7 Days.Vols 1 & 2 to ...Limiting Conditions for Operation Relaxation Program, Also Encl

ML20084H083
Person / Time
Site:	Byron, Braidwood, 05000000
Issue date:	05/02/1984
From:	Delgeorge L COMMONWEALTH EDISON CO.
To:	Harold Denton Office of Nuclear Reactor Regulation
Shared Package
ML20084H086	List: ML20084H083 ML20084H133
References
8538N, NUDOCS 8405070442
Download: ML20084H083 (10)

Text

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, pN Commonw:cith Edison

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) One First National Plaza. Chicago lilinois

\ ~~ ] Address R; ply to- Post Office Sox 767

\ ,/ Chicago, Illinois 60690 May 2, 1984 Mr. Harold R. Denton, Director Office of Nuclear Reactor Regulation U.S. Nuclear Regulatory Commission Washington, DC 20555

Subject:

Byron Generating Station Units 1 and 2 Braidwood Generating Station Units 1 and 2 Technical Specification Changes NRC Docket Nos. 50-454, 50-455, 50-456 and 50-457 Reference (a): July 20,1983 letter from T. M. Novak to D. L. Farrar.

Dear Mr. Denton:

The purpose of this letter is to propose additional changes to the Byron technical specifications which were published for comment in December, 1983. These changes would revise the allowable out-of-service times for several components from 72 hours8.333333e-4 days <br />0.02 hours <br />1.190476e-4 weeks <br />2.7396e-5 months <br /> to seven days.

Attachment A to this letter contains marked-up copies of Technical Specification pages regarding the out-of-service times for the ECCS subsystems, containment spray systems, spray additive system, containment cooling fans, auxiliary feedwater pumps, component cooling water loops, ar.d the essential service water system. These LCO changes have no significant effect upon plant coremelt frequency. These changes provide additional maintenance flexibility and will reduce significantly the frequency of requests for emergency extension of allowable out-of-service times.

We do not anticipate that longer allowable out-of-service times will result in reduced component availability. These changes are not being

,e proposed to permit slower maintenance. We expect that most maintenance jobs Noa will be completed at the same rate, regardless of the allowable OE out-of-service time. Occasionally, however, the ability to spend a few extra

% hours on a particular maintenance activity will result in a better component Ln reliability. Overall, we expect component availability to increase because n" of this flexibility.

Y of Enclosed is a report titled " Byron Generating Station Limiting Condition for Operation Relaxation Program." This report documents the study

{< which supports our conclusion that increased out-of-service times do not oE

• 1. significantly increase plant risk. This study was undertaken as documented in reference (a). The conclusions were reviewed with the NRC staff on April 26, 1984.

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O H. R. Denton May 2, 1984 It is requested that the NRC conduct a timely review of these proposed Technical Specification changes. It seems appropriate that a meeting be scheduled in the near future so that we can respond to Staff questions on the risk study. Ideally, these changes should be included in the Technical Specifications when the initial Byron 1 license is issued. At a minimum, we would like to establish a firm schedule for NRC review and approval.

Please direct any further questions regarding this matter to this office.

One signed original and fifteen copies of this letter, the Attachment, and the enclosure are provided.

Very truly yours,

. A 6t L. O. De1 George Assistant Vice-Presiden im i

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ATTACitGDif A

1) Section 3.5.2 (page 3/4 5-3)

Change "72 hours8.333333e-4 days <br />0.02 hours <br />1.190476e-4 weeks <br />2.7396e-5 months <br />" to "7 days" in Action 3.5.2.a

2) Section 3.6.2 (page 3/4 6-13)

Change "72 hours8.333333e-4 days <br />0.02 hours <br />1.190476e-4 weeks <br />2.7396e-5 months <br />" to "7 days" in Action 3.6.2.1

3) Section 3.6.2.2 (page 3/4 6-14)

Change "72 hours8.333333e-4 days <br />0.02 hours <br />1.190476e-4 weeks <br />2.7396e-5 months <br />" to "7 days" in Action 3.6.2.2

4) Section 3.6.2.3.c (page 3/4 6-15)

Change "72 hours8.333333e-4 days <br />0.02 hours <br />1.190476e-4 weeks <br />2.7396e-5 months <br />" to "7 days" in Action 3.6.2.3.c Delete Action Statement a.

5) Section 3.7.12 (page 3/4 7-4)

Change "72 hours8.333333e-4 days <br />0.02 hours <br />1.190476e-4 weeks <br />2.7396e-5 months <br />" to "7 days" in Action Statement a.

6) Section 3.7.3 (page 3/4 7-11)

Change "72 hours8.333333e-4 days <br />0.02 hours <br />1.190476e-4 weeks <br />2.7396e-5 months <br />" to "7 days" in the Action Statement.

7) Section 3.7.4 (page 3/4 7-12)

Change "72 hours8.333333e-4 days <br />0.02 hours <br />1.190476e-4 weeks <br />2.7396e-5 months <br />" to "7 days" in Action S*.atement a.

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EMERGENCY CORE COOLING SYSTEMS  ;

E00F & EEW COPY 3/4.5.2 ECCS SUBSYSTEMS - T,yg > 350*F LIMITING CONDITION FOR OPERATION O

3.5.2 Two independent Emergency Core Cooling System (ECCS) subsystems shall be OPERA 8LE with each subsystem comprised of:

a. One OPERA 8LE centrifugal charging pump,

b. One OPERA 8LE Safety Injection pump,

c. One OPERA 8LE RHR , heat exchanger,

d. One OPERA 8LE RHR pump, and k) e. An OPERA 8LE flow path capable of taking suction from the refueling water storage tank on a Safety Injection signal and automatic opening of the containment sump suction valves.

APPLICA8ILITY: MODES 1, 2, and 3.

Q. ACTION:

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a. With one ECCS subsystem inoperable, restore the inoperable subsystem to OPERA 8LE status within 74-howes or be in at least HOT STAN08Y within the next 6 hours6.944444e-5 days <br />0.00167 hours <br />9.920635e-6 weeks <br />2.283e-6 months <br /> and in 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. In the event the ECCS is actuated and injects water into the Reactor Coolant System, a Special Report shall be prepared and suositted to the Commission pursuant to Specification 6.7.2 within 90 days describ-ing the circumstances of the actuation and the total accumulated actuation cycles to date. The current value of the usage factor for each affected Safety Injection nozzle shall be provided in this k Special Report whenever its value exceeds 0.70.

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O 3/4 5-3 BYRON - UNIT 1 O.

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SPRAY ADDITIVE SYSTEM

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LIMITING CONDITION FOR OPERATION 3.6.2.2 The Spray Additive Systaa shall be OPERA 8LE with:

O a. A spray additive tank containing a level of between 78.6% (4000 gallons) and 90.3% (4540 gallons) of between 30 and 36% by weight NaOH solution, and

b. Two spray additive eductors each capable of adding NaOH solution from the chemical additive tank to a Containment Spray System pump flow.

Q APPt.ICA8ILITY: MODES 1, 2, 3, and 4.

ACTION:

9 ds-y.s With the Spray Additive System inoperable, restore the system to OPERA 8LE O' status within 72 5: = or ba in at least HOT STAN08Y within the next 6 hours6.944444e-5 days <br />0.00167 hours <br />9.920635e-6 weeks <br />2.283e-6 months <br />; restore the Spray Additive Systas to OPERA 8LE status within the next 48 hours5.555556e-4 days <br />0.0133 hours <br />7.936508e-5 weeks <br />1.8264e-5 months <br /> or be in COLD SHUT 00WN within the following 30 hours3.472222e-4 days <br />0.00833 hours <br />4.960317e-5 weeks <br />1.1415e-5 months <br />.

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SURVEILLANCE REQUIREMENTS oO 4.6.2.2 The Sprey Additive System shall be demonstrated OPERA 8LE:

a. At least once per 31 days by verifying that each valve (manual, power-operated, or automatic) in the flow path that is not locked.

sealed, or othenvise secured in position, is in its correct position- [

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b. At least once per 6 months by:

1) Verifying the contained solution volume in the tank, and

2) Verifying the concentration of the NaOH solution by chemical y analysis,

c. At least once per 18 months during shutdown, by verifying that each

- . autoestic valve in the flow path actuates to its correct position on a Containment Spray Actuation test signal; and

d. At least once per 5 years by verifying each water flow rata O equivalent to 55(+5,-0) gallons per minute for 30% NaOH from the Educator test connections in the Spray Additive System:

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1) CS26A 68 -0 gym (Train A), and

+6 2). CS268 68 -0 gpa (Train B).

BYRON - UNIT 1 3/4 6-14 O- . - - .

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O CONTAINMENT SYSTEMS ,

{g g gg g 3/4.6.2 OEPRESSURIZATION AND COOLING SYSTEMS CONTAINMENT SPRAY SYSTEM i

LIMITING CONDITION FOR OPERATION

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3.6.2.1 Two independent Containment Spray Systems shall be OPERA 8LE with each Spray System capable of taking suction from the RWSi and transferring suction to the containment sump.

Q APPt.ICA8ILITY: MODES 1, 2, 3, and 4.

ACTION:

7I M3 With one Containment Spray System inoperable, restore the inoperable Spray System to OPERA 8LE status within 73-hours or be in at least HOT STAN08Y within n the next 6 hours6.944444e-5 days <br />0.00167 hours <br />9.920635e-6 weeks <br />2.283e-6 months <br />; restore the inoperable Spray System to OPERA 8LE status X within the next 48 hours5.555556e-4 days <br />0.0133 hours <br />7.936508e-5 weeks <br />1.8264e-5 months <br /> or be in COLD SHUTDOWN within the following 30 hours3.472222e-4 days <br />0.00833 hours <br />4.960317e-5 weeks <br />1.1415e-5 months <br />.

! SURVEILLANCE REQUIREMENTS 4.6.2.1 Each Containment Spray System shall be demonstrated OPERA 8LE:

a. At least once per 31 days by verifying that each valve (manual, power-operated, or automatic) in the flow path that is not locked, j sealed, or otherwise secured in position, is in its correct position; O. b. ay verifying, that on recirculation flow, each. pump develops a

! discharge pressure of greater than or equal to 265 psig wnen l tasted pursuant to Specification 4.0.5; 1

i c. At least once per 18 months during shutdown, by:

1) Verifying that each automatic valve in the flow path actuates O. to its correct position on a Containment Spray Actuation test signal, and

2) Verifying that each spray pump starts automatically on a Containment Spray Actuation test signal.

O. d. At least once per 5 years by performing an air or smoke flow test through each spray header and verifying each spray nozzle is unobstructed.

O O 8YRON - UNIT 1 3/4 6-13 ,

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I CONTAINMENT SYSTEMS ,

kL h, h h CONTAINMENT COOLING SYSTEM j LIMITING CONDITIONS FOR OPERATION

3. 5. 2. 3 Two electrically independent systems of containment cooling fans shall l

be OPERA 8LE with one fan to each system.

APPLICA8ILITY: MODES 1, 2, 3, and 4.

i ACTION: -

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a With one system of the above required containment cooling fans inoperable and both Containment Spray Systems OPERA 8LE, restore the L' 'Jd 6 *4, inoperable system of cooling fans to OPERA 8LE status within 7 days or be in at least HOT STAN08Y within the next 6 hours6.944444e-5 days <br />0.00167 hours <br />9.920635e-6 weeks <br />2.283e-6 months <br /> ano in COLD

, A within_theJollowinG=30: hours. - J 1 AL With two systems of the above required containment cooling fans inoperable and both Containment Spray Systems OPERA 8LE, restore at least one system of cooling fans to OPERA 8LE status within 74-h wes 7l y or be in at least HOT STAN08Y within the next 6 hours6.944444e-5 days <br />0.00167 hours <br />9.920635e-6 weeks <br />2.283e-6 months <br /> and in COLD SHUTDOWN within the following 30 hours3.472222e-4 days <br />0.00833 hours <br />4.960317e-5 weeks <br />1.1415e-5 months <br />. Restore both above required systems of cooling fans to CPERA8LE status within 7 days of initial loss or be in at least HOT STAN08Y within the next 6 hours6.944444e-5 days <br />0.00167 hours <br />9.920635e-6 weeks <br />2.283e-6 months <br /> and in COLD SHUTDOWN within the following 30 hours3.472222e-4 days <br />0.00833 hours <br />4.960317e-5 weeks <br />1.1415e-5 months <br />.

l b q. With one system of the above required containment cooling fans inoperable and one Containment Spray System inoperable, restore the i inoperable Spray System to OPERA 8LE status within 72 hours8.333333e-4 days <br />0.02 hours <br />1.190476e-4 weeks <br />2.7396e-5 months <br /> or be in at least HOT STAN08Y within the next 6 hours6.944444e-5 days <br />0.00167 hours <br />9.920635e-6 weeks <br />2.283e-6 months <br /> and in COLD SHUTDOW within the following 30 hours3.472222e-4 days <br />0.00833 hours <br />4.960317e-5 weeks <br />1.1415e-5 months <br />. Restore the inoperable system of containment cooling fans to OPERA 8LE status within 7 days of initial )

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loss or be in at least HOT STAM08Y within the next 6 hours6.944444e-5 days <br />0.00167 hours <br />9.920635e-6 weeks <br />2.283e-6 months <br /> and in COLD SHUTDOWN within the following 30 hours3.472222e-4 days <br />0.00833 hours <br />4.960317e-5 weeks <br />1.1415e-5 months <br />.

SURVEILLANCE REQUIREMENTS 4.6.2.3 Each system of containment cooling fans shall be damenstrated OPERA 8LE:

a. At least once per 31 days by:

1) Starting each fan system in slow speed from the control room, and verifying that each fan system operates for at least 15 minutes, and

2) Verifying a cooling water flow rate of greater than or equal to

• 2660 gpa to each cooler.

b. . At least once per 18 months by verifying that each fan system starts automatically on a Safety Injection test signal.

8YRON - UNIT 1 3/4 6-15 l

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9 PLANT SYSTEMS

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AUXILIARY FEEDWATER SYSTEM U LIMITING CONDITION FOR OPERATION

3. 7.1. 2 At least two independent steam generator auxiliary feedwater pumps and associated flow paths shall be OPERA 8LE with: ,

l a. One motor-driven auxiliary feedwater pump capable of being powered from an E5F Bus, and

b. One direct-driven diesel auxiliary feedwater pue capable of being F powered from a direct-drive diesel engine and an OPERA 8LE Diesel Fuel Supply System consisting of a day tank containing a minimum of 420 gallons of fuel.

APPt.ICA8ILITY: MODES 1, 2, and 3.

ACTION:

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'7 days

a. With one auxiliary feedwater pump inoperable, restore the required auxiliary feedwater pumps to OPERA 8LE status within Mannes or be in at least HOT STAND 8Y within the next 6 hours6.944444e-5 days <br />0.00167 hours <br />9.920635e-6 weeks <br />2.283e-6 months <br /> and in HOT SHUT 00WN 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 both auxiliary feedwater pumps inoperable, he in at least HOT STAN08Y within 6 hours6.944444e-5 days <br />0.00167 hours <br />9.920635e-6 weeks <br />2.283e-6 months <br /> and in 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 />.

. SURVEILLANCE REQUIREMENTS P

4.7.1.2.1 Each auxiliary feedwater pump shall be demonstrated OPERA 8LE:

a. At least once per 31 days on a STAGGERED TEST BASIS by:

1) Verifying that the pump develops a differen'ial t pressure of greater than or equal to 1825 psid at a flow of greater than or equal to 85 gym in the recirculation aode; BYRON - UNIT 1 3/4 7-4 e****

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( 3/4.7.hCOMPONENTCOOLINGWATERSYSTEM

_ LIMITING CONDITION FOR OPERATION

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3.7.3 At lent two component cooling water loops shall be OPERA 8LE.

l APPLICA8ILITY: MODES 1, 2, 3, and 4.

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! With only one component cooling water loop OPERA 8LE, restore at least two b' loops to OPERA 8LE status within Yt4mers or be in at least HOT STAN08Y within the next 6 hours6.944444e-5 days <br />0.00167 hours <br />9.920635e-6 weeks <br />2.283e-6 months <br /> and in COLD SHUTDOWN within the following 30 hours3.472222e-4 days <br />0.00833 hours <br />4.960317e-5 weeks <br />1.1415e-5 months <br />.

l SURVEILLANCE REQUIREMENTS 4.7.3 At least two component cooling water loops shall be demonstrated OPERA 8LE:

a. At leest once per 31 days by verifying that each valve (manual,

_ .- . power-operated, or automatic) servicing safety-related equipment that is not locked, sealed, or othenvise secured in position is in its correct position; and

b. At least once per 18 months during shutdown, by verifying that:

1) Each automatic valve servicing safety-related equipment actuates to its correct position on a Safety Injection test signal, and

2) Each Component Cooling Water Systes pump starts automatically on a Safety Injection test signal.

8YRON - UNIT 1 3/4 7-11 i

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PLANT SYSTEMS PR00F & REVH COPY 3/4.7.4 ESSENTIAL SERVICE WATER SYSTEM i LIMITING CONDITION FOR OPERATION _

3.7.4 At least two independent Essential Service Water Systems, which

(, includes a loop and a cooling tower, shall be OPERA 8LE.

APPLICA8ILITY: MODES 1, 2, 3, and 4.

ACTION:

C a. With only one Essential Service Water Systas OPERA 8LE, restore at least two Essential Service Water Systaes to OPERA 8LE status within 7 d,.p 72-hours or be in at least FOT STAN08Y within the next 6 hours6.944444e-5 days <br />0.00167 hours <br />9.920635e-6 weeks <br />2.283e-6 months <br /> and in COLD SHUTDOWN within the following 30 hours3.472222e-4 days <br />0.00833 hours <br />4.960317e-5 weeks <br />1.1415e-5 months <br />.

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b. With a loss-of-offsite power and with the outside air taaperature- - -

, equal to or less than 40*F, start both essential service water pumps unless already operating.

SURVEILLANCE REQUIREMENTS 4.7:4 At least two Essential Service Water Systans shall be demonstrated OPERA 8LE:

a. At least once per 31 days by verifying that each valve (manual, power-operated, or automatic) servicing safety-related equipment that is not locked, sealed, or otherwise secured in position is in

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its correct position; and

b. At least once per 18 months during shutdown, by verifying that:

1) Each automatic valve servicing safety-related equipment or isolating the non-nuclear safety-related portion of the systas actuates to its correct position on a Safety Injection test signal, and

2) Each Essential Service Watar Systas pump starts automatically on a Safety Injection test signal.

c. At least once per 31 days, by verifying that each cooling tower fan operatas for at least 15 minutes and at least once per 18 months by visually inspecting and verifying no abnonnel breakage or degradation of the fill materials in the cooling tower.

( BYRON - UNIT 1 3/4 7-12

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