ML20203K878

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Rev 0 to Training Lesson Plan LO-LP-39209-00, ECCS 3/4.5
ML20203K878
Person / Time
Site: Vogtle  Southern Nuclear icon.png
Issue date: 08/08/1986
From: Brown R, Stuhaan C
GEORGIA POWER CO.
To:
Shared Package
ML20203K798 List:
References
LO-LP-39209, LO-LP-39209-00, NUDOCS 8608210393
Download: ML20203K878 (11)
v • d • e


Text

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. i TRAINING LESSON PLAN i, ,

TITLE. EMERGENCY CORE COOLING SYSTEFI3/4.S' NUMBER: 'L -LP-39209-00 PROGRAM: LICENSED OPERATOR TRAINING 0 REVISION:

AUTHOR: C. STUHAAN 8/7/86 i n n DATE:

APPROVED: [ M 'p DATE: f/hg INSTRUCTORGUIDELINES8

1. WHITE BOARD W1TH MARKERS
2. OVERHEAD PROJECTOR
3. TRANSPARENCY:
a. LO-TP-39209-001 PURPOSE STATEMENT AND LIST OF 03JECTIVES.

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LO-LP-39209-00 PURPOSE STATEMENT:

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. 1 TO TEACH THE STUDENT THE APPLICABILITY AND ACTIONS OF LIMITING CONDITION FOR OPERATION SECTION 3/4.5, EMERGENCY CORE COOLING SYSTEMS.

II. LIST OF OBJECTIVES:

1. The student will be able to determine if in violation of an LCO if given a list of equipment and a given applicability condition.
2. The student will be able to give the required action statement from memory if the time limit for action is one hour or less.
3. The student will be able to look up the required action if given the applicable LCO if action required in more than one hour.

Additional for SRO

4. The student will be able to explain the bases for each of the LCO's.

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REFERENCES:

TECHNICAL SPECIFICATIONS SECTION 3/4.5 EMERGENCY CORE C00L1FG SYSTEMS f

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LO-LP-39209-00 ll1. LESSON OUTLINE: NOTES A. Accumulators

1. T/S 3/4.5.1 - Accumulators LO-TP-39209-00-001 Obj ectives
a. Each accumulator shall be OPERABLE with: Verified by Proc.

(OPS SURV)

1) The isolation valve open 14000-C - Shiftly 142'i 3-C - Monthly
2) Volume between 36.1% and 63.9% 14465-C - MOV Verif.
3) Boron concentration between 1900 ppm and 2100 ppm a) Chemistry check CB*" I b) Volume increases ( 1% tank volume.)
4) N C Ver Pressure - 564 psig and 637 psig 2
b. Applicable in Modes 1, 2, and 3*
  • Pzr Press, above 1000 psig
c. Action:
1) Accumulator inoperable .(not due to closed isolation valve), restore operable in 1 hour1.157407e-5 days <br />2.777778e-4 hours <br />1.653439e-6 weeks <br />3.805e-7 months <br /> or a) Hot Standby in 6 hours6.944444e-5 days <br />0.00167 hours <br />9.920635e-6 weeks <br />2.283e-6 months <br /> b) Reduce Pzr Press 100 psig
d. Bases
1) Ensures sufficient volume of borated water l

a) Immediately forced into core through cold legs b) If RCS pressure drops below accumu-l lators

2) Provides initial cooling during large LOCA
3) Limits on Pressure, Volume and Boron Concen-tration a) Assumptions in analysis are met l

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LO-LP-39209-00 l

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LESSON OUTLINE: NOTES

4) Isolation valves are considered " Operating Bypasses" a) Required to be removed when permis- i sive conditions not met b) They also fail to meet single failure criteria c) Power must be removed from valves.
5) Limits for operation other than isolation valve closed a) Minimize time exposure to LOCA b) Concurrent with another accumulator failure (1) Could result in unacceptable PCT's
6) Inoperable accumulator because closed iso-lation valve

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a) Full capability of one accumulator not available b) Prompt action is required B. ECCS Subsystems - Tavs ___ 350*F Verified operable

. via many surveil-

1. T/S 3/4.5-2 lances OPS / CHEM /

ENG. etc.

a. Two ECCS subsystems shall be operable. Each comprised of:
1) CCP
2) SI Pump
3) RHR Heat Exchanger
4) RHR Pump
5) Operable flowpath from RWST on SI signal and semi-auto transfer to CTB oump during recire phase
b. Applicable in Modes 1, 2, and 3 Exception to SI pump for T/S 3.5.3.2 5

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LO-LP-39209-00 111. LESSON OUTLINE: NOTES

c. Action
1) With i ECCS subsystem inop. restore operable in 72 hours8.333333e-4 days <br />0.02 hours <br />1.190476e-4 weeks <br />2.7396e-5 months <br /> or Hot standby in 6 hours6.944444e-5 days <br />0.00167 hours <br />9.920635e-6 weeks <br />2.283e-6 months <br /> and Hot shutdown in following 6 hours6.944444e-5 days <br />0.00167 hours <br />9.920635e-6 weeks <br />2.283e-6 months <br />
2) If SI actuated a special report requires in 90 days
d. Bases - Two subsystems above 350*F
1) Sufficient core cooling for LOCA a) Assuming loss of one subsystem
2) Operating with accumulators a) Limits PCT to within acceptable (2200*F) b) For all, break sizes c) Provides long term cooling C. ECCS Subsystems - Tavg 350*F
1. T/S 3/4.5.3.1
a. ECCS subsystem operable required
1) CCP
2) RHR Heat Exchanger
3) RHR Pump and
4) Operable flowpath from RWST that can be manually realigned to take suction from CTB emer sump during recire phase.
b. Applicable in Mode 4.
c. Action
1) No ECCS subsystem operable due to CCP inoperable or flowpath from RWST unavailable.

a) Restore 1 ECCS subsystem in 1 hour1.157407e-5 days <br />2.777778e-4 hours <br />1.653439e-6 weeks <br />3.805e-7 months <br /> or cold shutdown in next 20 hours2.314815e-4 days <br />0.00556 hours <br />3.306878e-5 weeks <br />7.61e-6 months <br /> 6

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LO-LP-39209-00 LESSON OUTLINE:

ll1. NOTES

2) ECCS train inoperable due to RHR Heat  ;

Exchanger or RHR pump 00S.

a) Restore operable or maintain RCS Tavg 350*F via alternate heat removal methods.

3) If SI actuated prepare special report to the commission within 90 days
d. Bases - One ECCS subsystem below 350*F
1) Do not require single failure consider-ation a) Stable reactivity condition of core b) Limited core cooling requirements
2) Limits on maximum of one CCP and SIP less than 350*F a) Mass addition transient relieved by one PORV
3) Surveillance requirements on components These bases apply to 3.5.2 and 3.5.3 a) Ensure that assumption in analysis are met

. (1) And subsystem operability maintained

4) Surveillances on throttle position stops and flow balancing a) Ensure proper ECCS flows for LOCA b) Maintenance of proper flow resistance and pressure drops necessary to:

(1) Prevent runout conditions (2) Provide same flev eplit :: in analysis (3) Maintain flow above that in analysis (4) Assure seal injection flow less than assumed in analysis 7

LO-LP-39209-00 111. LESSON OUTLINE: NOTES D. ECCS - Tavg 350'F - Safety Injection Pumps

1. T/S 3/4.5.3.2 - Safety Injection Pumps
a. All SI pumps shall be inoperable
b. Applicable in Modes 4, 5, and 6 with Rx vessel head on
c. Action
1) With a SI pump operable, make all SI pumps INOP in 4 hours4.62963e-5 days <br />0.00111 hours <br />6.613757e-6 weeks <br />1.522e-6 months <br />
d. Bases
1) Ensure mass addition pressure transient T below 350*F can be relieved by a single PORV. "#8 E. Refueling Water Storage Tank
1. T/S 3/4.5.4
a. RWST will be oper,able with
1) Volume of 631, 478 minimum
2) Boron concentration between 2000 ppm and 2100 ppm

. 3) Minimum temp - 50*F and

4) Max temp 120*F l 5) RWST SLUDGE mixing valves capable or
closing on low-low RWST level l b. Applicable in Modes 1, 2, 3 and 4
c. Action:

l l 1) With RWST INOP (Exclude sludge valves)

{ restore operable in 1 hour1.157407e-5 days <br />2.777778e-4 hours <br />1.653439e-6 weeks <br />3.805e-7 months <br /> or hot standby in 6 hours6.944444e-5 days <br />0.00167 hours <br />9.920635e-6 weeks <br />2.283e-6 months <br /> and cold shutdown in following 30 hours3.472222e-4 days <br />0.00833 hours <br />4.960317e-5 weeks <br />1.1415e-5 months <br />.

l l 2) With sludge mixing valves inop. restore within 24 hours2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br /> or isolate system with manual valves or deenergize solenoid pilot valve.

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LO-LP-39209-00 111. LESSON OUTLINE: NOTES

d. Bases
1) Ensures sufficient negative reactivity inserted into core a) To counteract positive insertion from
  • cooldown ,

b) Cooldown can be caused by:

(1) Inadvertent depressurization (2) LOCA (3) Steam Line rupture

2) In the event of LOCA a) Limits on volume and boron con-centration (1) Sufficient water for recirculation (2) Remain suberitical cold after mixing with RCS volumes. All rods in but one
3) Takes into account unusable volume
4) Limits on volume and boron concentration a) Ensure pH value between 8.5 and 10.5 (1) Minimizes evolution of iodine (2) Minimizes effect of chloride or caustic stress corrosion E. Summary
1. Accumulators
2. ECC'S Subsystems - Tave ___350*F
3. ECCS Subsystems - Tave 350*F
a. Safety Injection Pumps
4. RWST 9

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LO-LP-39209-00 lli. LESSON OUTLINE: NOTES F. Exercises

1. Case 1 - Plant is operating at 100% power 1153 MW load - Tavg - 588'F. Crew a is conducting routin$

surveillance required during their shif t. Chemistry reports results of accumulator liquid boron samples for the monthly surveillance.

The results are as follows:

Accumulator #1 --

1957 ppm Accumulator #2 -

1890 ppm Accumulator #3 -

1940 ppm Accumulator #4 -

1950 ppm Are these concentrations alright to operate with?

Is a Tech Spec affected and if so what action is required.

Answer:

1. No. All samples ' appear very low with accumulator #2 low out of spec.
2. Tech Spec 3.5.1 is affected. If boron con-centration can't be recovered in 1 hour1.157407e-5 days <br />2.777778e-4 hours <br />1.653439e-6 weeks <br />3.805e-7 months <br /> a shutdown and plant pressure reduction is

. called for.

2. Case 2 - Plant is starting up following a refueling is in Mode 4 going to Mode 3. During the SS/STA review of clearance and tagging logs it is noticed that SI pump 'A' is stilled tagged out to perform a routine oil change pm. Can the osos authorize the mode change from Mode 4 to Mode 3? What Tech Spec (s) are affected?

Answer:

1. Yes. A mode change can be made safety injection pumps can be inoperable going into Mode 3 but not with temp exceeding 375'F.
2. T/S affected 3.5.2 (See Note asterisk for Mode 3, bottom or page 3/4 5-3) this is working in conjunction with T.S. 3.5.3.2 10

LO-LP-39209-00 ill. LESSON OUTLINE: NOTES Note Pumps must be restored within 4 hours4.62963e-5 days <br />0.00111 hours <br />6.613757e-6 weeks <br />1.522e-6 months <br /> of Mode 3 entry or prior to Tave exceeding 375'F, whichever occurs first.

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