ML20008F816

Startup Physics Test Rept,Unit 2,Cycle 6.

ML20008F816
Person / Time
Site:	Prairie Island
Issue date:	05/07/1981
From:	NORTHERN STATES POWER CO.
To:
Shared Package
ML20008F814	List: ML20008F813 ML20008F816
References
NUDOCS 8105120098
Download: ML20008F816 (4)

Text

- .--

1

-. I

'(')

,- v Prairie Island Startup Physics Test Report 1 hit 2 Cycle 6 1.0 Introduction The Prairie Island Unit 2 reactor had 41 reload fuel assemblies manufact- l ured by Exxon Nuclear Company installed in 1981 during the fifth refueling for that facility.

2.0 Startup Physics Test - Introduction Reference 1 identified the startup related tests conducted for the Unit #

1 Cycle 5 startup. Tests described in detail with analytical results in that report included the following:

(a) Zero Power Isothermal Temperature Coefficient (b) Control Banks' Rod Worth (c) Critical Boron Concentration (d) Boron Worth (e) Power Distribution Measurements This report provides test results for the above tests conducted'during the startup of Prairie Island Nuclear Cenerating Plant, Unit 2. The procedures used in the startup test program were the most recent revision reviewed by the Plant Operations Committee.

3.0 Startup Physics Tests - Results Table 1 summarizes the following data for each test performed.

(a) Test (b) Procedure / Effective Revision .

(c) Parameter (d) Measured Value

! (e) Acceptance Criteria l

l 4.0 Summary The data presented in Table 1 shows acceptable agreement with the acceptance criteria. The five TOPROD assemblies also exhibited acceptable agreement with the acceptance criteria. The Quadrant Power Tilt Ratio (QPTR) was outside the-acceptance criteria at HZP. Due to the marginal quality of data at this power level and the fact that QPTR's at higher powers met the acceptance criteria, this deviation was judged to have no l safety significance by the Operations Committee.

l 5.0 Reference (1) Letter, L 0 Mayer (NSP) to J G Keppler (NRC) dated August 1, 1979.

8105120c)%

r .

l I

r .

Table 1 Unit 2 Cycle 6 Startup Test Results 1.0 HZP Isothermal Temperature Coefficient Procedure: D32 Revision: 2 (2/19/81)

Test Condition Measuredy,, Acceptance Criteria ARO -2.21 pcm/F <0 pcm/F 2.0 Control Banks' Worth Measurements Procedure: D30 Revision: 3 (2/19/81)

Test Condition Measured Worth Acceptance Criteria i

Control Bank D 1074 pcm 957 pcm + 15%

Control Bank C 1400 pcm 1307 pcm + 15%

Control Bank B 539 pcm 616 pcm + 15% _

Control Bank A ~1791 pcm 1656 pcm + 15%

All Control Banks 4804 pcm 4536 pcm + 10%

3.0 Critical Boron Concentration '

Procedure: D34

) Revision: 1 (9/6/79) .

Test Condition Measured Value Acceptance Criteria All Rods Out 1644 ppm 1638 + 50 ppm D+C+B+A In 1133 ppm 1104 + 50 ppm 4.0 Differential Boron Worth Procedure: D30 Revision: 3 (2/19/81)

Test Condition Acceptance Criteria Measured %

<All Control Banks > -9.4 pcm/ ppm -8.5 pcm . 10%. .

ppm -

i v

i r

,,, y - , , , . ,_.-_,-y -

. , - - . , - _ - , , , - . , -, . , , - . - , y., w ,,. , y r- -- 3 ,

/

a 5.0 Power Distribution Measurements Procedure: SP2116 Revision: ~6 (1/8/81)

Plant Condition Parameter Value ' Acceptance Criteria .

HZP, ARO MAX (RRI m -RRI p

)/RRI p #

Pi > 0.9 -7.5% + 10%

Pi < 0.9 10.9% j; 15%

F*

9 Maximum 2.37 at z = 8.4ft <4.29 at z =8.4ft Limiting 2.36 at z = 9.0ft <4.26 at z =9.0ft P" .. 1.,0 .<1. 5 QPTR 1.032 <1.02 48% Power MAX (RRI m

-RRIp

)/RRI p

Pi > 0.9 +4.3% + 10%

Pi < 0.9 +4 .1 % j; 15%

F 9 Maximum 1.92 at z = 7.0ft <4.37 at z =7.0ft Limiting 1.91 at z = 7.4ft <4.35 at z =7.4ft F 1.45 <1.71 bH QPTR 1.019 <1.02 99% Power MAX (RRI m

-RRIp )/RRI p Pi > 0.9 -4.2% + 10%

Pi < 0.9 5.9% j; 15%

F" 9 Maximum 1.79 at z = 5.8ft <2.21 at z = 5.Sft Limiting 1.78 at z = 7.4f t <2.17 at z = 7.4ft F 1.44 <l.55 H

QPTR 1.017 <l.02

• Values include un.;ertainties of 1.05 and 1.03 Criteria is (2.21/P)xK(z)xBU(E.)

J

• • Values include ur Aca5aties of 1.04.

Criteria is 1.5. il 0.2(1-P)]

i i

v e-~e,, a e . - . - - . , e,~ ,,, ,.y -,

.y -,- , , ,,,.-e , - , , - , + . -- , , , . , , _ ,

sl e

Mf e3 d,,

HZP Hot Zero Power ARO All Rods Out RRI Reaction Rate Integral - measured

. m RRI Reaction Rate Integral predicted P

Pi Reistive assembly power QPTR Quadrant Power Tilt Ratio diso isothermal temperature coefficient pcm/ F Nb boron worth pcm/ ppm

, <All Control Banks > average value overall control banks i

a i

I i

I e

l

[

. _ _ _ _ . . , -- _ _ . . - . . . . , . , . - , . . - - - , . _ . . . . - , _ _ _ _ , . . . . - . . , - . - . . . _ - . , _ . . . , . ,