ML19350F072

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Forwards marked-up Revised Initial Test Program.List of Responses to NRC Questions Provided
ML19350F072
Person / Time
Site: Fermi DTE Energy icon.png
Issue date: 06/19/1981
From: Colbert W
DETROIT EDISON CO.
To: Kintner L
Office of Nuclear Reactor Regulation
References
EF2-48238, NUDOCS 8106240165
Download: ML19350F072 (15)


Text

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June 19, 1981 EF2-48238

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i Mr. L.L. Kintner Division of Project Management

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{ h 3' f j r* 2.41]L 1d U Office of Nuclear Regulation U.S. Nuclear Regulatory Commission L L,.cgg

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H2 Washington, D.C. 20555

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Dear Mr. Kintner:

44 [

Reference:

1. Enrico Fermi Atomic Power Plant, Unit 2, O' NRC Docket No. 50-341

Subject:

Initial Test Program (Chapter 14) Questions The following is submitted as per our discussion with B. Clayton regarding the Enrico Fermi 2 Initial Test Program as defined in Chapter 14 of the Final Safety Analysis Report.

Listed below are the questions. received that require written responses or changes. It is our understanding thAt all the other questions received on this matter have now been resolved satisfactorily through our verbal discussions. With this letter Detroit Edison commits to change the test program as shown on the marked-up FSAR pages which are attached.

Qttestion Attached FSAR Page(s)

5. P0 #12 deleted testing of eqpt. used for servicing LPRM's and dry tubes. Why?

Answer: The wording was revised to specifically again 14.1-34 include this equipment.

7. P0 #43 deleted the measurement of leakage l

from drywell to suppression pool. Why?

Answer : This was deleted in error-the wording was 14.1-68 revised to again include this measurement.

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l 11. Purpose of test modified so that it now l only requires measurement of reference leg temperatures. Acceptance criteria ni 81oaen/&S, g

. a Memorandum to: June 19, 1981 Mr. L.L. Kintner EF2-48238 Question Attached FSAR Page(s) implias that more is being done. Modify the " criteria" to provide te.1perature criteria which satisfy the stated purpose. Also modify the " purpose" to include checking the calibration of the various instruments. Modify the des-cription to describe how this is done (coin-cide with the stated acceptance criteria).

Answer: This test abstract was modified to address the 14 1-114 abnve concerns. The present Level 2 criteria should determine if recalibration is nec-essary as shown.

12. Fil System SU - What is the source of the Level 2 AC7 Where does one look for the predicted value in #3.

Answer: General Electric supplies the Level 1 14.1-136 c'1teria as part of the test specifications for this system.

Criteria #3 was modified to show that the predicted value in question is obtained -

from the Transient Safety Analysis Design ,

Report supplied by General Electric.

13. Relief valves, should include demonstration of position indication.

Answer: A Level 2 criteria was added to include 14 1-141 verification of the relief valve position.

15. Recirc System - Explain how extrapolation done from M-G set motor trip to drive breaker trip inertia, etc. Deleted 2-pump trip. Must do 2 pump ATWS trip.

Answer: The oreoperational test abstract for the 14.1-30 recirculation system was changed to 14.1-31 specifically include both drive notor 14.1-148 breaker and ATWS trip tests. With this commitment there is no need for the field breaker trip extrapolation referenced in Startup Test Phase abstract and this was deleted.

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Memorandum to: June 19, 1981 fir. L.L. Kintner EF2-48238 Attached FSAR'Page(s)

Question

16. Table 14.1-1 not consistent with test abstracts.

Modify table to reflect testing described in abstracts.

-STI Pressure Regulator: description shows tests in auto mode. Table does not.

STI FW System: description shows tests (water level setpoint changes) in auto mode. Table doesn't.

STI TSV & CV Fast Closure Trips: descrip-tion states generator trip performed at 100f power. Table shows either SV or CV.

Answer: STI-20 (Pressure Regulator) was modified to delete 14.1-133 the reference to testing in the automatic 1 pad follow mode of recirculation system operation. .

As discussed, STI-21 (FN System) was not chang'ed as the present wording is satisfactory.

Item K was deleted from table 14.1-1 to remove 14.1-159 the inconsistancy with STI-25.

20. Is loose parts monitoring system covered by the initial test program?

The Loose Parts Monitoring System was added to 14 1-21 Answer:

the list of Acceptance tests which will be performed in the initial test program.

Sincerely, W.F. Colbert Technical Director Fermi 2 Project i

WFC/smr cc: B. Little i

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- - - - -- - - - -_ _ . __ ___ _ .i

Mr. L.L. Kintner June 19, 1981 EF2-48238 bec: T. A. Alessi R. M. Berg W. F. Colbert

11. J. Fahrner F. E. Gregor E. P. Griffing
11. R. Holland J. W. Honkala
11. J. Jens L. E. Kanous R. S. Miller J. A. Nyquist T. J. O'Keefe E. Lusis P. A. tiarquardt E. fi. Page

.L. E. Schuerman M. W. Shields H. Tauber R. A. Vance A. E. Wegele Document Centrol

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EF-2-FSblL - l ace I f and Jr y tu k!~

14.1.3.2.12 Fuel Handling an Vessel Servicing Equipment Preoperational Test lll

a. Test Objective j/ To verify the operation of the fuel handling and vessel servicing equipment, including tools used 1 / the servicing of control rods and fuel assemblies 9a: The test will also verify the operation 35 of vacuum ' cleaning equipment, the refueling platform, the fuel preparation machine, and the service platform.
b. Prerequisites - The Checkout and Initial Operations Tests have been completed and the TRC has reviewed and approvea the test procedure and the initiation of testing. Additionally, the refueling platform, fuel preparation machine, and fuel racks must be installed and operational; all slings and lifting devices must be certified at their design load, at least, by the vendor.
c. General Test Method - Verification of the fuel-handling and vessel servicing equipment is demon-strated by dry operation of the following equipment:
1. Cell disa'ssembly tools
2. Channel replacement tools 3.

Instrument-handling tools

4. Vacuum cleaning equipment
5. Interlocks and logic associated with the refuel-ing and service platform are verified
6. Proper operation of refueling and service plat-forms are verified.
d. Acceptance Criteria - All tools must be verified for proper operation. In addition, logic and in-terlocks and sling and grapple load cells must be either verified for proper operation, or demon-I strated to be within their respective engineering I

design specifications.

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I 14.1-34 Amendment 35 - May 1981 j

EF 2-FSAR 14.1.3.2.43 Primary Containment Leak Rate Preoperational Test Test Obiective - To determine the primary containment O

a.

leak rate including containment penetrations, MSIVs, and the drywell to suppression pool vacuum breakers.

b. Prerequisites - The Checkout and Initial Operations Tests have been completed and the TRC has reviewed and approved the test procedure and the initiation 35 of testing. Permanent plant air supply or a portable air compressor with filters and valves, pressure and temperature sensors, flow meters, and soap bubble and ultrasonic leak detection equipment must be available.

Functional tests of isolation valves described in the nuclear boiler preoperational test (14.1. 3. 2. 6 )

and vacuum breakers described in the containment vacuum breakers preoperational test (14.1.3.2.66) must be completed.

c. General Test Method - Verification of the integrity of the primary containment boundaries is damonstrated by leak rate testing of the following:
1. Local leak rate test of primary containment penetrations
2. . Local leak rate test of primary containment iso-lation valves, including MSIVs, and each torus to reactor building vacuum breaker and isolation valve
3. Local leak rate tests of drywell to suppression pool vacuum breakers
4. Overall containment integrated leakage.

S. hhyafed I ** N c I'S+ ~ df YW'II Io 3 ff!'*

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  • 35l d. Acceptance Criteri@a - All leak rates from penetrations, valves, and overall containment must be shown to be within their respective engineering design specifications.

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! '14.1-68 Amendment 35 - May 1981 e

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l EF-2-FSAR 14.1.4.8.7 Uater Level Megsurement y y Jea k +/,a ca.I;i .-d,0.s S $ f* ^'" ***b " f

'**'** _ ) u rco.s c u p k litLL~kt% M The purpose of.this test is 4to measure the reference leg temperature and recalibrate the instruments if tha measured temperature is different than the value assumed during the initial calibration.

, Description To monitor the reactor vessel water level, four level instrument systems are provided. These are the following:

a. Shutdown range
b. Narrow range
c. Wide range
d. Fuel range.

These systems are used, respectively, as follows:

a. Wat0c level measurement, cold shutdown condicions
b. Feedwater flow and water level control functions, hot 35 operating conditions
c. Safety functions, hot operating conditions
d. Safet

%,g le>l ,s.<lhi./J :y functions, cold shutdown conditions.

n to %c ,>.rk. & C.,A e,,i .

The tert will be done at ' rated temperature and pressure and under steady-state conditions and will verify that the reference leg temperatures of the instruments are the values assumed during initial calibration. If not, the instruments will be recalibrated using the measured value. 7h, u ,,, ,/p ,/. : f f fls te,/e,,tsl>f3 i f r e .s/, a

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Yht c -fo ser; Cetterla y;,, alt sind ,,j n<rrow imy(lud ,'ach* dr. sc,. y ,, , , ;,(L y, y , 7g (u, y , , ,, ( ,g ,,,,)f +fu Leve1 1 (f caIll,ed..;.t ;5 neoru 4 e .

Not applicable.

Level 2

a. The narrow-range level system indicators should agree within 11.5 in, of the average readings
b. The wide-range level system indicators should agree within 16 in. of the average readings.

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i! 14.1-114 Amendment 35 - May 1981 l

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EF-2-FSAR The feedwater flow runout capability must not exceed the as-sumed value in the ?SAR.

Level 2 Level control system-related variables may contain oscillatory modes of response. In these cases, the decay ratio for each con-trolled mode of response must be less than or equal to 0.25.

A scram must not occur from low water level following a trip of one of the operating feedwater pumps. There should be a greater than 3-in. water level margi.: to scram for a feedwater pump trip initiated at 100 percent power conditions.

For the feedwater temperature loss test, the increase in simu-lated heat flux cannot exceed the predicted value referenced .

to the actual feedwater temperature change and power level. "Vhech 35 uill Le toK*n inns the Transient hfeVy Analptr Desy R<@.

The average rate of response of the feedwater actuator to large

(>20 percent of pump flo9) step disturbancos shall be between 10 to 25 percent of pump rated feedwater flow /sec. This average response rate will be assessed by determining the time required to pass linearly through the 10 percent and 90 percent response points of the flow transient.

The open loop dynamic flow response of each feedwater actuator (turbine or valve) to small (<10 percent) step disturbances shall be the following:

a. Maximum time to 10 percent.of a step disturbance -

1.1 sec ,

b. Maximum time from l0 to 90 percent of a step disturbance - 1.9 sec
c. Peak overshoot (percentage of step disturbance) -

$15 percent.

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4 14.1-136 Amendment 35 - May 1981

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p . _ _ . . ._ - .l...._.~_.. _

0 EF-2-FS AR l Level 2 Variables related to the pressure control system may contain oscillatory modes of response. In these cases, the decay ratio for each controlled mcde of response must be less than or equal to 0.25.

The temperature measured by thermocouples on the discharge side of the valves shall return to within 100F of the temperature recorded before the valve was opened. If pressure sensors are available, they shall return to their initial state upon valve 35 closute.

During the 250 psig functional test, the steam flow through each relief valve, as measured by the initial and final bypass valve position, shall not be less than 10 percent under the average of all valve responses.

During the rated pressure test, the steam flow through each re-lief valve, as measured by MWe, shall not be less than 5 percent of rated MWe under the average of all the valve responses.

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14.1-141 Amendment 35 - May 1981

EF 2-FSAR 14.1.3.2.9 Reactor Recirculation and Motor-Generator Sets Preoperational_ Tests h

a. Test Obiective - To verify the operation of the re-actor recirculation system, including pumps, and their associated motors and motor-generator sets, valves, instrumentation, and controls. The rated conditions tests are conducted during the Startup Test Program. ,
b. Prerequisites - The Checkout and Initial Operations Tests have been completed and the TRC has reviewed and approved the test procedure and the initiation of testing. The RBCCWS must receive readiness veri-fication. All required testing of equipment up to the operation of the recirculation pump has been com-pleted, including operation of the motor-generator sets and fluid coupling, recirculation p' imp motor (uncoupled), and all control loops. Reactor inter-nals which are in place are those which can satis-factorily withstand the pressure drops encountered during these tests. Means must be provided to monitor audible noise and vibration of the pumps.
c. General Test Method - After prerequisite testing, verification of system capability is demonstrated by the proper, integrated operation of the following:
1. System Valves (a) operability (b) opening and closing speed (c) manual operation (d) limit switch and torque switch operation (e) position indicating lights.
2. Logic and Interlocks (a) recirculation pump trip with reactor low j leveland/orwithreactorhighpressuree/>JW5) recirculation pump runback with reactor

! low level and loss of feed pump (b) recirculation flow limit for NPSH protec-l tion with low FW flow (c) scoop tube positioner lockup with signal

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! (d) MG set drive motor lockout 14.1-10 Amendment 35 - May 1981 l

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EF-2-FSAR (e) MG set drive motor circuit breaker trip (f) circulating lube oil system l (g) annunciators.

3. Operational Testing (a) single pump operation at minimum speed (b) single and dual pump operation at higher loop fInws within flow and cavitation limits

~ c' j,,, a w, < 6.u. b r h or' be (c) pump tr *!'"O.L'%

b.

j.[* #$#hI ips , :=I"JI"Q'4;, u wJ p ,, k 'r e(J a 'd>'

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(d)  % #%,u l recirc?',NEing pump and t.< piping

o. nr +r.p v <ibration measuremants (e) MG set motor, coupler, and genarator (f) jet pump consistency.
o. Acceptance Criteria - Performance cannot be evaluated properly in the preoperational phase, and, therefore, no conclusions on performanca can be reached until the system is tested during the power test program.

Expected values of measured parameters will be tabu- ~

lated before the test. Significant variations from these values will be investigated. All system com-ponents must be either verified for proper operation,

- or demonstrated to be within their respective engi-neering design specification.

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14.1-31 Amendment 35 - May 1981

EF-2-FSAR l 14.1.4.8.28 Recirculation System q Purpose <

a. To verify that the feedwater control system can satisfactorily control tNe water level without a resulting turbine tripf scram and obtain actual pump speed / flow
b. To verify rec!*culation pump startup under pres-surined reactor conditions
c. To obtain recirculation system performance data
d. To verify that no recirculation system cavitation occurs in the operable region of the power-flow map.

Description The reactor coolant recirculation system consists of the reac-tor vessel and two piping loops. Each loop contains a centrif-ugal recirculation pump and two isolation valves located in the drywell and 10 jet pumps in parallel situated in the reac-tor downcomer. Each recirculation pump takes suction from the reactor downcomer and discharges through a manifold system to the nozzles of the 10 jet pumps. Here che flow is augmented by suction flow from the downcomer and delivered to the reactor inlet plenum. ,

Recirculation pump trips are performed to determine the feed-water control system transient characteristics. Power to the recirculation pump motors is supplied from the station primary electrical bus through a fluid-coupled morne-generator set connected to each pump. Separation of the motor-generator set from its bus results it. a 1 css of pumping power and a con-sequent flow coastdown. The reactor transient respanse during the trip and coastdown of one recirculation motor-generator set 35l and its pump will be determined. All single-pump trips will be initiated' by tripping the motor-generator set drive motor breaker. Single pump trips of one motor-generator set drive motor will be used to determine the feedwater control system transient performance. Th;;; t;;.. lec.te _ f il be e-tr r ' t:d ,

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Recirculation pump restarts become increasingly ditficult after a trip at reactor operating pressures. A successful pump re-start depends on the correct placement of the scoop tube in order to prevent a set stall. The tests will include changing the scoop tube position so that pump breakaway occurs at a tachometer output equivalent to between 5 and 15 cps. The limit switches on the positioner are then set for this range.

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i 14.1-148 Amendment 35 - May 1981 h

- EF-2-FSAR 14.1.4.8.20 Pressure Regulator Purpose

a. To determina the optimum settings for the pressure control loop by analysis of the transients induced in the reactor pressure control system by means of the pressure regulators
b. To demonstrate the takeover capability of the backup pressure regulator on failure of the controlling pressure regulator and to set spacing between the setpoints at an appropriate value
c. To demonstrate smooth pressure control transition between the control valves ar.d bypass valves when the reactor generates more steam than is used by the turbine.

Description The pressure setpoint is dgereased rapidly and then increased rapidly by about 10 lb/in.', and the response of the system will be measured in each case. It is desirable to accomplish the setpoint change in less than one second. At specified test conditions, the load limit setpoint is set so that the transient is handled by control valves, bypass valves, or both.

The backup regulator is tested by simulating a failure of the ,

opera. ting pressure , regulator so that the backup regulator takes

  • over control. The response of the system is measured and eval-uated and regulator settings are optimized. The matrix of test ,

mode and conditions is tabulated below.

Test Condition Number Mode Input 1 2 3 4 5 6 __

CV Setpoint No Yes Yes Yes Yes Yes CV Fall to Back up No Yes Yes Yes Yes Yes BPV Setpoint Yes Yes No Yes Yes Yes i BPV Fall to l

Back up Yes Yes No Yes No Yes  ;

l Rec ire .

Modes Local Local Master Local, Manual Manual Manual Manual Qae .ae+

h &nMIMT j 14.1-133 Amendment 35 - May 1981

EF-2-FSAR  !

TABLE 14.1-1 STARTUP TEST PROGRAM ques weseel 8 es Ce&d Taat Eggiqlgg g Teet nestep 3 3 4 S 6 mee r ene y se. Test mean teet &

a e e a e e

& Cheeseel and todteenesteet e e e e e 3 eedset tee measur emente .

3 Pueb Leading e 4 Pu!& Case Smendemo steegan a e a e e l Cat e e a 6 Sden postereente and Cemeset and seguonce e a e

? ester teven meesessenete e e e 0 Ilue Pe#feemence a e s 9 t#est Ce 66te et ten a e e e e at apet Cetatestsen a e e

e a e Ml 64 Precess Ousewtee a la seeeter Case goetea6en Cent 6mg Systee e e a il eagh-Presense Costant Inleertnoe Svetes e e 14 Senested Pterees tempeestores e a e e e e il System Sagene6en e e to Core powse esotestetaan e e e e e e e 51 Core reefoemence e 18 Steam Predwettest e it Case powee = wood ammae sessense m e a e e.it 44 Preseese megeletes

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  • 31 Plow Centret a e 30 Bestreuletten systee e tesp One Pump e e System Peetereense o e a e meneeettet ten vetif agetsee n

. Runnece m 39 tese of fdB of f ette powee L.Sallt e a e e a e e le viteessen messeramente o e 31 seekseelessen Systen Flow Collteettom 13 Seeetoe mesee Cle nup Systes e 33 Seendeen meet esoneet sysses e e e a e 34 Paptag Systems Dyisease seeposee sey e L e Lesen seneen flew control asas. a. ese Pigere 8 4.1 3 f ar Test (*nn4st anne rege,e esp.

A e mestes menest flew arattet mode. D. Teetang et messeet elseutetten an lett ined line see he done anyttee followtag Test e e Teet 1 . t of flew eentret. Conditten 3.

SP e Setem pensattitty. e. setween feet Cond6ttene 1 and B.

SS e Setes espoetes. d. Down setteint only.

B e Beres deflette. e. Detenee teet Condit6nna 1 and 6.

Se e 97 pees vetee reopenas. f. Det***e Test Conet tienn 3 est 3.

g. Pwevee maoise pnwee test p* tat.
n. Deterenne easteen pomoe withnet seven.

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}i 14el-159 Amendment. 35 - May 1981 e --

EF- 2-FS AR.

...~ ACCEPTANC3 TESTS (Cont'd)

10. Miscellaneous Heating, Ventilation, and Air Condi-tioning Systems Acceptance Tests
11. Torus Water Management System Acceptance Tests I2. Loan Psyk Mw;hA3 .Tph,., geeap+ ,,,a T<ds l

i 14.1-21 Amendment 35 - May 1981 L____________--_ _ - - - - _ - - - _