ML19225A604

Cincinnati Gas & Electric Further Responses to Miami Valley Power Project Third Set of Interrogatories.Affidavit & Certificate of Svc Encl

ML19225A604
Person / Time
Site:	Zimmer
Issue date:	06/15/1979
From:	Borgmann E CINCINNATI GAS & ELECTRIC CO.
To:
References
NUDOCS 7907190687
Download: ML19225A604 (13)

Text

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NRC PUBT,TC Dnq;m 777 tgj UNITED STATES OF M1 ERICA E 5 b J U N id w1978 >

NUCLEAR REGULATORY CO?GIISSION .

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In the Matter of ) %I Id '

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THE CINCINNATI GAS & ELECTRIC )

COMPANY, ET AL. ) Docket No. 50-358 (Wm. H. Zimmer Nuclear Power )

Station)

APPLICANT'S FURTHER PISPCNSES TO "INTERVENOR MIM11 VALLEY POWER PROJECT 'S THIRD SET OF INTERROGATORIES TO APPLICAITT" June 15, 1979 366 343

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QUESTION 8: Describe Husky Products, Inc.'s incentive system for welding.

RESPONSF_- Incentive earnings are paid to an operator for producing work in excess of a set performance level which is completely acceptable from the standpoint of meeting all specifications and quality requirement.

The performance level standard includes sufficient time for inspection by each operator. Each operator is required to inspect his work at a specified frequency, and is responsible, in the first instance, for making certain that the work he is producing is acceptable.

Wnen work is produced which is not acceptable, incentive earnings are not paid to the operator for that defective work.

366 349

QUESTION 14: Describe, in relation to the primary electrical system cable trays, the location of back-up electrical system cable trays.

RESPONSE: With regard to the circuits which have a safety function (Class lE) in the Zimmer Station, there are no " primary" or "back-up elest.rical system cable trays". There are three safety divisions as described in Section 8.3.1.11 of the FSAR.

Trays of different divisions carrying Class lE cables are separated in accordance with the criteria contained in Section 8.3.1.11 of the FSAR.

366 350

QUESTION 41: What is the IEEE standard designation for cables used at Zimmer? If there is more than one desig-nation, explain where each is used.

RESPONSE: All Class lE cables in cable trays which are used on Zimmer Station are qualified in accordance with IEEE 323 and have been c isted to the require-ments of IEEE 383.

366 351

QUESTION 43: List each type of conductor in the cable trays and the temperature ratings of ecch.

RESPONSE: Conductors other than instrument cable in the cable trays are copper. In the case of instrument cables, the conductors are copper, copper /constantan, chromel alumel or chromel/constantan. All cable conductors are ::ated at least 90 C.

e 366 352

QUESTION 44: Describe in detail how the addition of conductors to the cable trays beyond original design will affect ambient temperature.

RESPONSE: Limitations on the amount of cable to be placed in a power tray assure that the 90 C cable rating will not be exceeded. Specific calculations have shown that with the Zimmer configuration of power trays, the temperature rating of the cables will not be approached.

366 353

QUESTION 45: Describe in detail how the addition of fire insulation around the cable trays will af fect ambient temperature.

RESPONSE: The addition of fire insulation around cable trays will affect the ambient temperature around the cables if a tray contains power cables. For fire insulated power cable trays, the coincidental loading on the individual cable and their thermai rise have been analyzed so that the temperature during plant operation will not exceed the 90 C rating of the cable.

366 354

Question 65: State and document the tolerance standard for foreign material (specifically metal shaving) in the reactor vessel allowable by quality assurance criteric RESPONSE: Af ter assembly of the reactor was completed and prior to filling with water, the reactor vessel and internals were cleaned of all soils, miscellanecus materials and other foreign materials.

The entire vessel and core structure was cleaned locally and then rinsed or flushed to remove soluble contaminants and particulate matter. As part of the Construction Acceptance test, the primary system must be free of particles larger than 1/32 inch thick and 1/16 inch long. After the reactor is filled with demineralized water, the Reactor Water Cleanup System filter would filter out any particulate matter not previous]y removed.

366 355

QUESTION 66: Describe all risks to the reactor, the primary cooling pump, the heat exchanger and all valves and seals associated with the above mechanisms should the tolerance standard for foreign materials in the reactor vessel be exceeded.

RESPONSE: All systems which are sensitive to particulate matter are filtered. The type and size of filters are selected to stop any particles which could harm the particular system.

366 356

QUESTION 76: In case of radioactive leakage due to improperly set seals, describe procedures for clean up of leaked material.

RESPONSE : The control rod seals referenced are utilized only during cold shutdown conditions when control rod drive maintenance is being performed. Any leakage past the seals would be collected in the drywell floor drain sump which discharges to the Reactor Building Floor Drain tank and would be processed in the Liquid Radwaste System as described in FSAR Section 11.. 2. Water leaking past a seal could possibly contaminate portions of the undervessel rod drive support structures as the water drains to the sump. These support structures are coated for ease of decontamination. If required, decon-tamination would consist of flushing che structures with demineralized water and wiping with absorbcnt decon rags.

366 357

VERIFICATION State of Ohio )

ss County of Hamilton )

Earl A. Borgmann, being first duly sworn, states that he is Senior Vice President for The Cincinnati Gas & Electric Company; that he has been duly authorized to execute, verify and file the foregoing document " Applicant's Further Responses to 'Intervenor Miami Valley Power Project's Third Set of Interrogatories to Applicant'"; that he has read the contents of same and that the statements contained therein are true and correct to his best information, knowledge and belief.

+$ b 0,3,.w-Earl A. Borgmdnn Subscribed and sworn to before me this / day o f June , 1979.

b'AAss m _A) tary Public MARGARET C. HUBER Notary PubGc. State Of Chio My Commission Expmes Aug. 13, 1533 366 358

UNITED STATES OF AMERICA NUCLEAR REGULATORY COMMISSION In the Matter of )

)

THE CINCINNATI GAS & ELECTRIC )

COMPANY, ET AL. ) Docket No. 50-358

)

(Wm. H. Zimmer Nuclear Power )

Station) )

CERTIFICATE OF SERVICE I hereby certify that copies of " Applicant's Furtner Responses to Intervenor Miami Valley Power Projects Third Set of Interrogatories to Applicant", dated June 15, 1979, in the captioned matter, were served upon the following by deposit in the United States mail this 15th day of June, 3979.

Charles Bechhoefer, Esq. Dr. Lawrence R. Quarles Chairman, Atomic Safety Atomic Safety and Licensing and Licensing Board Appeal Board U.S. Nuclear Regulatory U.S. Nuclear Regulatory Commission Commission Washington, D.C. 20555 Washington, D.C. 20555 Dr. Frank F. Hooper, Member Michael C. Farrar, Esq.

Atomic Safety and Licensing Atomic Safety and Licensing Board Appeal Board School of Natural Resources U.S. Nuclear Regulatory University of Michigan Commission Ann Arbor, Michigan 48109 Washington, D.C. 20555 Mr. Glenn O. Bright, Member Chairman, Atomic Safety and Atomic Safety and Licensing Licensing Board Panel Board U.S. Nuclear Regulatory U.S. Nuclear Regulatory Commission Commission Washington, D.C. 20555 Washington, D.C. 20555 Richard S. Salzman, Esq. Chairman, Atomic Safety and Chairman, Atomic Safety and Licensing Appeal Board Panel Licensing Appeal Board U.S. Nuclear Regulatory U.S. Nuclear Regulatory Commission Commission Washington, D.C. 20555 Washington, D.C. 20555 366 359

Charles A. Barth, Esq. William Peter Heile, Esq.

Counsel for the NRC Staff Assistant City Solicitor Office of the Executive City of Cincinnati Legal Director Box 214 U.S. Nuclear Regulatory Cincinnati, Ohio 45202 Commission Washington, D.C. 20555 Troy B. Conner, Jr., Esq. Leah S . Kosik, Esq.

• Counsel for The Cincinnati Attorney at Law Gas & Electric Company 3454 Cornell Place Conner, Moore & Corber Cincinnati, Ohio 45220 Suite 1050 1747 Pennsylvania Avenue N.W.

Washington, D.C. 20006 Mr. Chase R. Stephens John D. Woliver, Esq.

Docketing and Service Section Clermont County Community Office of the Secretary Council U.S. Nuclear Regulatory Box 181 Commission Batavia, Ohio 45103 Washington, D.C. 20555

• Copy personally deliverer?.

i William J. Morsa f /W 366 360