ML20091D722

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Proposed TS Change Number 90-20-0 W/Revisions to Units 1 & 2 TS Appendix A,Pages 3/4 1-19 & 1-20 on Standby Liquid Control Sys
ML20091D722
Person / Time
Site: Limerick  Constellation icon.png
Issue date: 04/03/1992
From:
PECO ENERGY CO., (FORMERLY PHILADELPHIA ELECTRIC
To:
Shared Package
ML20091D709 List:
References
NUDOCS 9204100367
Download: ML20091D722 (5)
v • d • e


Text

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LIMITING CONDITION FOR OPERATION 3.1.5 _The standby liquid control system, consisting of a minimum of two pc'-ps and corresponding flow paths, shall be OPERABLE.

APPLICABILITY: OPERATIONAL CONDITIONS 1, 2, and'5*

ACTION:-

a. In OPERATIONAL CONDITION 1 or 2:
1. With only one pump and corresponding explosive valve OPERABLE, restore one inoperable pump and corresponding explosive valve to OPERABLE status within 7 days or he in at least HOT SHUTOOWN within the next 12 hours1.388889e-4 days <br />0.00333 hours <br />1.984127e-5 weeks <br />4.566e-6 months <br />.
2. With the standby liquid control system otherwise inoperable, restore the system to OPERABLE status within 8 hours9.259259e-5 days <br />0.00222 hours <br />1.322751e-5 weeks <br />3.044e-6 months <br /> 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 />,
b. In OPERATIONAL CONDITION 5*:
1. With only one pump and corresponding explosive valve OPERABLE, restore'one inoperable pump and corresponding explosive valve to OPERABLE status within-30 days or insert all insertable control rods within the next hour.
2. -With the standby liquid control system otherwise inoperable, inserti all insertable control rods within 1 hour1.157407e-5 days <br />2.777778e-4 hours <br />1.653439e-6 weeks <br />3.805e-7 months <br />.

SURVEILLANCE REQUIREMENTS 4.1.5 TheLstandby liquid control system shall be demonstrated OPERABLE:

a. At least once per 24 hours2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br /> by verifying that:

. - 1. The temperature.of the sodium pentaborate solution is within the

' limits of Figure 3.1.5-1.

2. The available volume of sodium pentaborate solution is at least 4537

_ gallons.

3 . -- The temperature of the pump suction piping is greater than or equal to 70 F.

LIMERICK - UNIT 1 3/4 1-19 f

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ATTACHMENT-2 LIMERICK GENERATING STATION i UNITS 1 AND 2 Docket Nos. 50-352 50-353 License Nos. NPF-39 NPF-85 PROPOSED TECHNICAL SPECIFICATIONS CHANGE No. 90-20-0 List of Affected Page Changes-Unit 1 Unit 2 3/4 1-19 3/4 1-19 3/4 1-20 3/4 1 e 4

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REACTIVITY CONTROL SYSTEMS-SURVEILLANCE' REQUIREMENTS (Continued)

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b. At least once per 31 days by:
1. Verifying the continuity of the explosive charge.
2. Determining by chemical analysis and calculation
  • that the available-weight of sodium pentaborate is greater than or equal to 5389 lbs; the concentration of sodium pentaborate in solution is less inan or equal to 13.8% and within the limits of Figure 3.1.5-1 and; the following equation is satisfied:

C x Q ~>-1 13% wt. 86 gpm where C = Sodium pentaborate solution (% by weight)

Q = Two pump flowrate, as determined per surveillance requirement 4.1.5.c.

3. Verifying that each valve (manual, power-operated, or automatic) in the flow path that is not locked, sealed, or otherwise secured in position. is in its correct position.
c. Demonstrating that, when tested pursuant to Specification 4.0.5, the minimum flow requirement of 41.2 gpm per pump at a pressure of greater than or equal to 1190 psig is met,
d. At least=once per 18 months during shutdown by:
1. Initiating at least one_of the standby liquid control system loops,
including an explasive valve, and verifying that a flow path from the pumps to the reactor pressure vessel is available by pumping deitneralized water into the reactor vessel. The replacement charge for the explosive valve shall be from the same manufactured batch as the one fired or from another batch which has been certifled by t- having one of that batch successfully fired. All injection loops sh&ll be tested in 3 operating cycles.
2. ** Demonstrating that all suction piping is unblocked by pumping from the storage tank through each' discharge line, and pumping from the test tank back to the test tank through each loop.
3. Demonstrating that 'A' storage tank heater is OPERABLE *** by verifying expected temperature rise.of the sodium pentaborate solution in the storage tank after the heater is energized.
  • This-test snall also be performed anytime water or boron is added to the solution or when the solution temperature drops below 70UE.
    • This-test'shall also be performed whenever suction piping temperature drops.

below 70 F.

      • With tank heater 'A' inoperable, verify storage tank temperature is greater than-70 F every eight (8) hours.

LIMERICK - UNIT I- 3/4 1-20

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  • REACTIVITY CONTROL SYSTEMS

. 3/4. 6 STANDBY LIQUID CONTROL SYSTEM LIMlilHG CONDITION FOR uPERAT10N 3.1.5 The: standby liquid control system, consisting of a minimum of two pumps and

-corresponding flow paths, shall be OPERABLE.

APPLICABILITY: OPERA 110NAL CONDITIONS 1, 2, and 5*

AC110N:

a. In OPERATIONAL CONDITION 1 or 2
1. With only one pump and corresponding explosive valve OPERABLE, restore one inoperable p ap and corresponding explosive valve to OPERABLE status within 7 days or be in at least HOT SHU100WN within

, the next 12 hours1.388889e-4 days <br />0.00333 hours <br />1.984127e-5 weeks <br />4.566e-6 months <br />.

2. With the standby liquid control system otherwise inoperable, restore the system to OPERABLE status within 8 hours9.259259e-5 days <br />0.00222 hours <br />1.322751e-5 weeks <br />3.044e-6 months <br /> 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 />,
b. In OPERATIONAL CONDITION 5*:
1. With only one pump and corresponding _ explosive valve OPERABLE, restore one inoperable pump and corresponding explosive valve to OPERABLE status within 30 days or insert all insertable control rods within the next hour,
2. With the standby liquid-control system otherwise inoperable, insert all insertable control rods within 1 hour1.157407e-5 days <br />2.777778e-4 hours <br />1.653439e-6 weeks <br />3.805e-7 months <br />.

SURVEILLANCE REQUIREMENTS 4.1.5 The standby liquid control system shall be demonstrated OPERABLE:

a. At least once per 24 hours2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br /> by verifying that:
1. The temperature of the sodium pentaborate solution is within the limits of Figure 3.1.5-l'.
2. The available volume of sodium pentaborate solution is at least 4537 gallons.
3. Thetgmperatureofthepumpsuctionpipingisgreaterthanorequal to 70 F.
  • With any controi rod withdrawn. Not applicable to control rods removed per Specification 3.9.10.1 or 3.9.10.2.

LIMERICK - UNIT 2 3/4 1-19

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REACUV15hCONYR0LSYSTEMS SURVEILLANCE REQUIREMENTS (Continued)

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b. At least once per 31 days by:
1. Verifying the continuity of the explosive charge.

2.- Determining by cnemical analysis and calculation

  • that the available weight of sodium pentaborate is greater than or equal to 5389 lbs; the concentration of sodium pentaborate in solution is less than or i equal to 13.8% and within the limits of figure 3.1.5-1 and; the following equation is satisfied:

C x Q ~

1 13% wt. 86 gpm where C - Sodiurr pentaborate solution (% by weight)

Q = Two pump flowrate, as determined per surveillance requirement 4.1.5.c. 4

3. Verifying that each valve (manual, power-operated, or automatic) in the flow path that is not locked, sealed, or otherwise secured in position, is in its correct position.
c. Demonstrating that, wnen tested pursuant to Specification 4.0.5, the minimum flow requ'rement of 41.2 gpm per pump at a pressure of greater than or equal to 1190 psig is met.
d. At least once per 18 months during shutdown by: *
1. Initiating at least one of the standby liquid control system loops, including an explosive valve, and verifying that a flow path from the pumps to the reactor pressure vessel is available by pumping demineralized water into the reactor vessel. The replacement charge fcr the explosive valve shall be from the same manufactured batch as the one fired or from another batch which has been certified by havirg one_of that batch successfully fired. All injection loops shall be tested in 3 operating cycles.
2. ** Demonstrating that all suction piping is unblocked by pumping from the storage tank through each discharge line, and pumping from the test tank back to the test tank through each loop.
3. Ocmonstrating that 'A' storage tank heater is OPERABLE *** by verifying expected temperature rise of the sodium pentaborate solution in the storage tank after the heater is energized.
  • This test shall also be performed anytime water or boron is added to the '

solution or when the solution temperature drops below 70UF.

    • Thistesgshallalso'beperformedwheneversuctionpipingtemperaturedrops below 70 F.
      • With tank heater 'A' inoperable, verify storage tank temperature is greater than 70 F every eight (8) hours.

LIMERICK - UNIT ? 3/4 1-20

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