ML19260B236
| ML19260B236 | |
| Person / Time | |
|---|---|
| Site: | Arkansas Nuclear  |
| Issue date: | 12/03/1979 |
| From: | ARKANSAS POWER & LIGHT CO. |
| To: | |
| Shared Package | |
| ML19260B235 | List: |
| References | |
| PROC-791203, NUDOCS 7912070447 | |
| Download: ML19260B236 (7) | |
Text
.
ATTACaiENT B POST INSPECTION RESTART TESTING PROGRAM 1.
Ho t Functional Tests Heatug a.
==
Description:==
During heatup to hot s tandby condi-tions (5450F, 2250 psia, 4 RCPs running), moni-toring or pennanent and temporary instrumentation is conducted to check instrumentation performance and to monitor for temperature variations, base parts, vessel motion,etc.
This instrumentation includes the hot leg RTDs, external hot leg ther-mocouples, accelerometers and linear variable displacement t ransmi t t ers.
Acceptance ( a c t i on) Criteria:
All instrumentation proven operable or identified as failed (where un-needed) and no confirmed indications of loose parts or temperature oscillations.
b.
Flow Veri fication
==
Description:==
While steady at hot standby con-ditions, the RCS total flow rate is measured using RCP speed and di f ferential pressure instrumentation to verify the flow rate is acceptable and not appreciably changed since initially measured during post core load hot functional tests.
Acceptance ( Ac t ion) Criteria:
The RCS total flow rate is 362,000 10,860 gpm.
Control Rod Drop Times c.
==
Description:==
While operating at hot s tandby con-ditions, each control rod is dropped individually and the time from interruption of electrical power to the control element drive mechanism until the control rod reaches 90% insertion is measured.
Acceptance (Action Criteria:
The measured drop time to 90% insertion for each control rod must be
< 3.0 seconds, d.
Baseline Data And Intercomparison of Process Variables
==
Description:==
While operating at hot s tandby condi-tions, measurements are taken from each of the hot 1514 246 7912070 gh
. leg RTDs to detenmine any steady state biases and from various process instruments using the plant computer, CPCS, PPS and console me ters to verify agreement between readings.
Acceptace (Action) Criteria:
Steady state tem-perature biases are determined.
Also, all process instrument readings agree within specified toler-ances (unless waived for unneeded instruments).
2.
Low Power Physics Tests a.
==
Description:==
While at hot zero power conditions (545oF, 3250 psia, 4 RCPs running, reactor critical at <
10 % power) each CEA is inserted individually until the core reactivity is decreased by at least 0.5 C as measured by an on-line reac t ivi ty canpu-ter.
Acceptance ( Ac t ion) Criteria:
Al l CEAs are veri-fied coupled by observing reactivity decreases of at least 0.5c.
b.
CEA Symmet ry Tes t
==
Description:==
While at hot zero power conditions, each of the group 6 CEAs are inserted to their lower electrical limit individually while compen-sating for reactivity by trading with a symmetric counterpart.
The core reactivi ty is measured wi th a reactivity computer and compared for each of the symme t r i c C EAs in group 6.
Acceptance ( Ac t ion) Criteria:
All CEAs within the symme tric CEA group shall be wi thin 1.5C reactiv-ity of the symmetric CEA group average.
c.
All Rods Out ( ARO) Critical Boron Concentration (CBS)
==
Description:==
While maintaining hot zero power condi-tions, the reactor is borated such that CEA group 6 is between 130" and 150" withdrawn.
The boron concentra-tion is allowed to stabilize and several baron samples are taken to confinm stabili ty.
The remainder of CEA Group 6 is withdrawn and the reactivity subse-quently measured.
The reactivity measured is con-verted to a boron equivalent and added to the mea-sured boror concentration to determine the ARO CBC.
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. Acceptance ( Ac t ion) Criteria:
The measured ARO CBC is within 100 ppm of the predicted value calculated by Combus tion Engineering, d.
CEA Groups 5 &6 Reactivity Worth Measurement
==
Description:==
While maintaining hot zero power conditions the reactor is diluted from ARO and reactivity changes are compensa ted by s tepwi se insertion of CEA groups 6 and then 5.
Reactivity changes are measured and the reactivity worth of each CEA group de tennined by su= ming the react ivi ty steps.
During this test, neutron noise baselines are recorded.
Acceptance (Action) Criteria:
Measured CEA group worths mus t be wi thin 15 % o r ! 0.1 % AK /K o f their predicted worths (Combustion En gine e r ing) whichever is larger.
3.
Power Ascension Tests a.
Ho t Leg Temperature Monitoring and Data Collection
==
Description:==
During power increase and throughout testing at each steady state power plateau, data will be collected on recorders and computer trends of the individual hot leg temperature RTDs (both old and new) as well as the summed signals used by CPCS.
Additionally selected Reactor vessel and RCP differential pressure signals and external hot leg t he nno coup le readings are monitored and recorded for analysis.
Steady state measurements are conducted at 20, 30, 40 and 50% is found acceptable, at each 10% power increment above 50% power.
Acceptance ( Act ion) Criteria:
See Attachment C, Part 1.
b.
NSSS Calo rme tric Measurements and Instrumentation Calibration
==
Description:==
Verification of the process computer calorimetric calculations via hand calculations is performed at 20, 30, 40 and 50% power and instrumenta-tion calibrations are performed, if required.
Acceptance ( Ac t ion) Criteria:
The plant computer calorimetric is within
- 0. 4% power o f the hand calculated value at the 3 0% power level and within 0.2% power at the 50% power level.
Instrumentation calibrations are perfonned where required.
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. c.
Power Distribution Measurements Descriptions:
The tests are performed at 30% and 50% power and above 50% power as specified by normal power ascension test procedures.
The test method is further described on pages 14.1-62 and 14.1-63 of the APO-2 FSAR.
Acceptance ( Action) Criteria:
The comparison of the measured radial power distribution (CECOR) with the predicted power distribution shall satisfy the following ex-pression:
177
( 100Z.. ) 2 I
RNS =
1 5
5 177 where Z is the di f f erence be twe en the predicted g
and measuYRd relative Power density distribution fcr the i fuel a s s emb l y.
The comparison of the measured axial power distri-bution ( CECOR) with the predicted power distribu-tion shall satisfy the following expression:
'100
( 100h. ) 2
\\,I 1
_1 55 RMS =
13T where h is the di f f erence be twe en the predicted g
and measuggd relative power density distribution for the i axi al % of height.
d.
CEA Group Insertions Tests
==
Description:==
The objective of this test is to establish the effect of CEA group insertion upon the CPC AT power calculations and on the tempera-ture distribution of the hot leg coolant.
While operating at steady state, equilibruim Xenon con-ditions at 50% power, CEA groups 6 and 5 are diluted in.
Data is collected from the hot leg RTDs, Reactor vessel AP instrument, external not leg thenmocouples, anu the incore cectors.
Then the GEA groups are oorateu back out an equillurium conui t ions reestaulisueu.
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. Acceptance Criteria:
See Attachment C, Part 1 e.
Single CEA Insertions Tes ts
==
Description:==
The objective of this test is to establish the effect of selected single CEM insertions upon the CPC AT power calculations and on the temperature distribution in the hot leg coolant.
While operating at steady state, equilibrium Xe on conditions at 50% power, selected single CEAs are di-luted in.
Data is collected from the hot leg P.TDs, Reactor vessel AP instruments, external hot l e y, thermocouples and incore detectors.
Acceptance Criteria:
See Attachment C, Pa-t 1.
f.
Post 50% Power Testing
==
Description:==
When it is determined to be accept-able to escalate above 50% power, hot leg tempera-ture monitoring as described in part 3a previously will continue and will be integrated with the normal power ascension test program as described in Section 14 of the ANO-2 FSAR.
Acceptance ( Act ion) Criteria:
In addition to the acceptance criteria of the normal power ascension test program, those of Attachment C, Part I will
- apply, g.
Hot Leg Temperature Monitoring Following Completion DI Power Ascension Test Program
==
Description:==
Periodic monitoring of the magnitude of the hot leg temperature anomaly will be inte-grated in to our normal monthly power distribution surveillance testing program.
Acceptance Criteria:
See Attachment C, Part 2.
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. =4 151 C251
ATTACBIENT C Acceptance ( Action) Criteria Related to The ANOw2 Ho t Leg Temperature Ananaly 1.
Power Ascension Test Criteria:
a.
The T lips seen by the CPC channels, as detenmined h
by monitoring averaged and summed signals, do not exceed a magnitude of power - 5%.
15 b.
The magnitude of the flips in Reac tor Vess el AP does not exceed 0.5 psid.
c.
The magnitude of the steady state temperature bias and t emperature flips seen by individual RTD's do not exceed the limits shown on Figure C-1, d.
The general characteristic of the T an maly, as h
defined by T flip size and frequency, relative A and leg behavior, B hot RCP AP and RVAP behavior, T behavior, thermocouple indications, and accelero-meter indications have not changed significantly from pre-inspection behavior, e.
Sufficient data has been taken to characterize and extrapolate the behavior of the Th "" **IY' E
P#**It escalation in power.
2.
Post Power Ascension Test Criteria:
a.
The T flips seen by the CPC channels do not eceeek a magnitude of % power -5%.
15 b.
The magnitude of the stead state temperature bias and temperatue flips seen by individual RTDs do not exceed the limits shown on Figure C-1, and does not exhibit any significant change from previous measure-ments.
l 1514 252