ML20236Q293

Forwards Request for Addl Info Re Effects of Lawrenceville, Il Earthquake,Per 870910 Meeting.Site Visit Scheduled for Nov 1987 to Discuss Response.Response Requested within 30 Days of Ltr Receipt

ML20236Q293
Person / Time
Site:	Clinton
Issue date:	11/10/1987
From:	Muller D Office of Nuclear Reactor Regulation
To:	Spangenberg F ILLINOIS POWER CO.
References
TAC-65815, NUDOCS 8711190297
Download: ML20236Q293 (7)

Text

_

5 November 10,'1987 t

DocketNo.50-461 Distribution:

Docket F,11ea E. Jordan J

NRC & Local PDRs' ACRS (10) l J. Partlow l

PDIII-2 Rdg.

Mr. Frank Spangenberg GHolahan LLuther

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Manager. Licensing and Safety OGC-Beth.

AWang 3

Clinton Power Station PDIII-2 Plant File j

Post Office Box 670

{

Mail Code V920'1 l

Clinton, Illinois 61727 j

SUBJECT:

REQUEST FOR ADDITIONAL INFORMATION REGARDING EFFECTS OF LAWRENCEVILLE, ILLIN0IS EARTHQUAKE AT THE CLINTON POWER STATION j

(TACNO.65815) l.

As a result of a September 10, 1987 meeting with your staff regarding the Lcurenceville, Illinois earthquake, the NRC has determined the need for some i

additional infomation in order to complete its review.

Enclosed are our questions regarding the September 10, 1987 meeting.

Please reply within 30 days of receipt of this letter.. Currently, the NRC staff still plans a site visit in November 1987 to discuss your answers to these questions and i

l walk through the plant.

If you have any questions or comments regarding these questions, please call Janice Stevens of my staff at (301) 492-4993.

The reporting and/or recordkeeping requirements contained in this letter affect fewer than ten respondents; therefore, OMB clearance is not required under P.L.96-511.

Sincerely, Original Sigred by/

Daniel R. Muller, Director Project Directorate III-2 Division of Reactor Projects - III, IV, V and Special Projects

Enclosure:

As stated cc:

G. Bagchi G. Giese-Koch L. Shao

-A.

Wang D. Crutchfield

• SEE PREVIOUS CONCURRENCE PDIII-2*gl PDIII-2*

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'l Mr. Frank Spangenberg PDIII-2 Plant' File Manager - Licensing and. Safety -

i Clinton' Power. Station-l Post Office Box 678

'I Mail. Code V920 Clinton, Illinois61727 1

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Dear >Mr. Spangenberg:

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SUBJECT:

' REQUEST FOR ADDITIONAL INFORMATION REGARDING EFFECTS OF' 1

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LAWRENCEVILLE, ILLIN0IS EARTHQUAKE AT THE CLINTON POWER s

STATION (TACN0.65815).

As result of a September 10, 1987' meeting with your sta'ff regarding'the

'l Lawrenceville, Illinois earthquake; the:NRC.has determined:the need for 2d4[

'j some additional information in '. order to complete its review."4ttached %

'i are our questions regarding the September 10, 1987 meeting...Please reply.

within _30 days of receipt of_ this letter. Currently, the NRC staff still' plans a site visit in. November 1987'to discuss your answers to these

~

questions and walk through the plant.

If you:have any questions or comments regarding'these questions, please. call Alan Wang.'(301) 492-8551; of my staff.

The reporting and/or recordkeeping requirements contained in this letter affect fewer than. ten respondents: therefore, OMB clearance is not 1

required under P.L.96-511.

l

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Daniel R. Muller, Director i

Project Directorate III-2, J

Gadgao,g ' g )

. Division of Reactor Projects - III,

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IV, V and Special Projects J

cc:

G. Bagchi G. Giese-Koch L. Shao A. Wang' D. Crutchfield 1,

hee fi~e V/Ou6 $b/tfiffber i

DFC PDIII-2 PDIII-2

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PDIII-2 lNAME :

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Mr. Frank A. Spangenberg, III Clinton Power Station-Illinois Power Company Unit 1 ce:

Mr. D. P. Hall Mr. L. Larson Vice~ President "

' Project Manager Cifuton Power Station-General Electric Company-P. O. Box 678-175 Curtner Avenue,'M/C 395 Clinton,1111nofs-61727

. San' Jose, California. 95125 LMr. R. D. : Freeman

-Regional Administrator,' Region.'III Manager-Nuclear Station Engineering Dpt.

-799 Roosevelt ~ Road

-Clinton Power Station Glen Ellyn, Illinois 60137 P. 0. Box 678 Clinton, Illinois 61727 l

Sheldon Zabel, Esquire Chairman of Dewitt County

'Schiff, Hardin & Waitt c/o County Clerk's' Office; 7200 Sears Tower DeWitt County. courthouse 233 Wacker Drive Clinton, Illinois 61727 Chie8Eo, Illinois 60606 Resident inspec t e t

.Ill;nois Department' U. S. Nuclear Regulatory Commission Of Nuclear Safety RR 3, Box 229 A Division of Engineering Clinton, Illinois 61727 1035-Outer. Park Drive. 5th' Floor Springfield, Illinois -62704 Mr.' Donald Schopfer Project Manager Sargent'& Lundy Engineers 55 East Monroe Street Chicago, Illinois-.60603 e

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_.________.-__-__m_._____.._m.____.--

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QUESTIONS PRESENTED ORALLY AT THE I

SEPTEMBER 10, 1987 MEETING WITH ILLINOIS POWER (CLINTON) 1 1.

How is the DCA-300 (recorder units) trigger mechanism set?.,

j 1

(a) Sum of triaxial accelerations (b) One axis accel. only 2.

How is the Response Spectrum Analyzer (Tera Tech)' activated?

j (a) By the same trigger mechanism as the DCA-300 (b) By its own (internal) trigger mechanism (electronic) l 3.

What does the seismic switch (IVS-EM014 on IP SYSTEM DIAGRAM)

~

l use as activating threshold level signal?

(a) Sum of 3 axis motion (b) One axis only motion 4.

Does CLINTON have the BITE system (built in Tera Tech test equipment)?-

1 Discuss section 2.3.3 (Tera Tech Manual). Discuss section 2.4.10 l

(systemmaintenance) 5.

What was the evidence that lead to the belief that the standby EHC pump start was not triggered by the earthquake?

6.

What scientific evidence was used to corroborate the statement that i

the earthquake was a low energy, high frequency event?

l 7.

Provide the analysis to demonstrate that the missing grout from the installation of the Engdahl instrument did not affect the results?

-h) 8.

Can it be determined exactly when the NRC was informed-that the OBE

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was possibly exceeded at various high frequencies?

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November 10,~1987

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Docket No. 50-461 Distribution:

Docket File E. Jordan i

NRC & Local PDRs J. Partlow j

PDIII-2 Reg.-

ACRS(10)

' I Mr. Frank Spangenberg GHolahan LLuther j

Manager - Licensing and Safety.

0GC-Beth.

AWang Clinton Power Station PDIII-2 Plant File Post Office Box 678 i

Mail Code V920 i

Clinton, Illinois 61727 I

Dear Mr. Spangenberg:

]

SUBJECT:

REQUEST FOR ADDITIONAL INFORMATION REGARDING EFFECTS OF LAWRENCEVILLE, ILLIN0IS EARTHQUAKE AT THE.CLINTON POWER STATION (TACNO.65815) j I

As a result of a September 10, 1987 meeting with your staff.regarding the Lawrenceville, Illinois earthquake, the NRC has determined the need for some additional information in order to complete its review.

Enclosed are our questions regarding the September 10, 1987 meeting.

Please reply within 30 days of receipt of this letter. Currently, the NRC. staff still plans a.

site visit in November 1987 to discuss your answers to these questions and -

l walk through the plant.

If you have any questions or comments regarding these j

questions, please call Janice Stevens of my staff at (301) 492-4993.

l The reporting and/or recordkeeping requirements contained in this letter affect fewer than ten respondents; therefore, OMB clearance is'not required under P.L.96-511.

I Sincerely,

]

Original Signed by/

j Daniel R. Muller, Director i

Project Directorate III-2 i

Division of Reactor Projects - III, IV, V and Special' Projects

Enclosure:

As stated cc:

G. Bagchi G. Giese-Koch L. Shao A. Wang D. Crutchfield

• SEE PREVIOUS CONCURRENCE PDIII-2*gj PDIII-2*

PW 2

LLuther/F '

AWang D)bler 11/ u /87 11/.

/87 11/ 9 /87

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Mr. Frank A. Spangenberg, III Clinton Power Station l

Illinois Power company Unit 1 i

cci 'Mr. D. P. Hall Mr. L. Larson Vice President'"

Project Manager.

.j Cifuton Powet Station

' General' Electric. Company

'j P. O. Box 678 175 Curtner Avenue..M/C 395 Clinton,. Illino,is 61727 San Jose, California 95125-Mr. H. D. Freeman Regional Administrator,' Region III M:ntgar-Nuclear Station Engineering Dpt.

799 Roosevelt Road Clinton Power Station P. O. Box 678

. Clen Ellyn,' Illinois 60137 Clinton, Illinois 61727.

Sheldon Zabel, Esquire Chairman of Dewitt County Schiff, Hardin & Waite

- c/o County Clerk's Office 7200 Sears Tower DeWitt County Courthouse 233 Wacker Drive Clinton, Illinois 61727 ChicaBo, Illinois 60606 Rtrident inspecter

' Illinois Department l

U. S. Nuclear Regulatory Commission Of Nuclear' Safety-j RR 3, Box 229 A Division of Engineering I

Clinton, Illinolo 61727 1035 OuterfPark Drive. 5th Floor l

Springfield, Illinois 62704

.]

Mr._ Donald Schopfer Project Manager Sargent & Lundy Engineers 55 East Honroe Street Chicago, Illinois 60603

)

4 1

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1

-1 1

1 QUESTIONS PRESENTED' ORALLY'AT THE SEPTEMBER 10, 1987 MEETING WITH ILLINOIS POWER.(CLINTON)~

i 1.

How is t'he DCA-300 (recorder units) trigger mechanism set? *

(a) Sum of triaxial accelerations (b). One axis accel. only 2.

How is the Response Spectrum' Analyzer (Tera Tech) activated?

)

1 (a) By the same trigger mechanism as the DCA-300 4

(b) By its own (internal) trigger mechanism (electronic) 3.

What does the seismic switch (IVS-EM014 on IP SYSTEM DIAGRAM) use as activating threshold level. signal?

(a) Sum of 3 axis motion (b) One axis only motion 4.

Does CLINTON have the BITE system (built in Tera Tech test equipment)?

j Discuss section 2.3.3 (Tera Tech Manual).. Discuss section 2.4 10

{

(systemmaintenance) 5.

What was the evidence that lead to the belief that the standby EHC i

i pump start was not triggered by the earthquake?

4j 1

l 6.

What scientific evidence was used to corroborate the statement that "j

the earthquake was a low energy, high frequency event?.

7.

Provide the analysis to demonstrate that the missing grout from the installation of the Engdahl instrument did not affect.the results?

j) 5-8.

Can it be determined exactly when the NRC was infonned that the OBE S

was possibly exceeded at various high frequencies?.

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