ML20101A222

Forwards Manufacturer Response Time Test Results to Suppl Info Provided in Re Overtemp & Overtemp delta-T Lag Compensation

ML20101A222
Person / Time
Site:	Point Beach
Issue date:	12/13/1984
From:	Fay C WISCONSIN ELECTRIC POWER CO.
To:	Harold Denton, John Miller Office of Nuclear Reactor Regulation
References
NUDOCS 8412180268
Download: ML20101A222 (3)

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Msconstn Becinc acwcoww 231 W. MICHIGAN, P.O. BOX 2046, MILWAUKEE, WI 53201 December 13, 1984 Mr. H. R. Denton, Director Office of Nuclear Reactor Regulation U. S. NUCLEAR REGULATORY COMMISSION Washington, D. C.

20555 Attention: - Mr. J. R. Miller, Chief Operating Reactors, Branch 3 Gentlemen:

DOCKETS 50-266 and 50-301 ADDITIONAL INFORMATION CONCERNING OVER-TEMPERATURE AND OVER-TEMPERATURE AT LAG COMPENSATION POINT BEACH NUCLEAR PLANT, UNITS 1 and 2 As noted in our November 15, 1984 letter, which provided additional information relative to the response times of Rosemont and Sostman RTD's, we are providing the attached manufacturers' response time test results.

If you have any.further questions, please contact us.

Very trul

ours, dd Vice Pre i nt-Nuclear Pwoer C._W. Fay l

Attachment J

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Copies to NRC Resident Inspector R. S. Cullen - PSCW j

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8412180268 841213 PDR ADOCK 05000266 P

PDR

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Atitachment' - C. ' W. Fay's letter. to H..R.

Denton December 13,.1984 ROSEMONT 176K RTD's

RTD Response Time (Seconds) 1-0.4, 0.4, 0.4 2

0.36, 0.4 3

0.42, 0.42 4

0.36, 0.'38, 0.38 5

0.32 6

0.36 7

0.32 1

8 0.36 9

0.32-10 0.32 Test' Conditions:

RTD plunge into "170 degrees-F at 3 ft/sec water.

Safety Analyses Assumptions:- 0.5 seconds.

However, the Point Beach

-Safety Analyses specifically have sufficient margin to allow RTD response times in: excess'of 1.0 seconds'-

SOSTMAN RTD Response Time (Seconds) i 1

2.5 2

2.0 3

2.0 4

2.0 5

2.0 g

6 2.1

- Test Conditions: - RTD plunge.into ambient-temperature l.

(from different.. temperature) at 3'ft/sec water..

Safety Analyses Assumption:

2.5. seconds s

e d

Attachment Rosemount 176K RTDs 3

n. nnns. T4 - (seennan) 1 0.4, 0.4, 0.4 2

0.36,0.4 3

0.42, 0.42 e

5 0.36, 0.38, 0 38 4

O.32 6

0.36 7

0.32 8

0.36 9

0.32 10 0 32 Test conditions: RTD plunge into 170 degrees-F at 3.ft/see water.

l Safety Analyses assumptions:

0.5 seconds. However the Point Beach Safety Analyses spec.ifically, have sufficient margin to allow RTD response times in excess of 1.0 seconds.

Sottman 3

Resnonse Ti w (Seconds) 1 2.5 2

2.0 3

2.0 4

2.0 5

2.0 l

6 2.1 Test conditions: RTD plunge into ambient temperature (from different temperature) at 3 ft/see water.

Safety Analyses assumption: 2.5 seconds l

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