ML15223A480
| ML15223A480 | |
| Person / Time | |
|---|---|
| Site: | Oconee  |
| Issue date: | 10/31/1978 |
| From: | Reid R Office of Nuclear Reactor Regulation |
| To: | Parker W DUKE POWER CO. |
| References | |
| NUDOCS 7811170029 | |
| Download: ML15223A480 (3) | |
Text
DISTRIBUTION:
L Bocket File (3)
OCTOBER ~11NRC PDR (3)
L PDR (3)
VStello Dockets Nos.
5 BGrimes 5-70 TJCarter and 50-287 RReid MFairtile RIngram DEisenhut OI&E (5)
Mr. William 0. Parker, Jr.
.,Attorney, OELD Vice President -
Steam TERA, DSB Production JRBuchanan Duke Power Company ACRS, (16)
P. 0. Box 2178 Gray File 422 South Church Street
-,GLainas Charlotte, North-Carolina 28242.
PCheck
Dear Mr. Parker:
In order to complete our reviewof your.ubmittals of July 14 and October 6, 1978; in, regard to.the, permanent modificAtions to the High Pressure Coolant Injection system at the Ocopee Nuclear Station, we find that we need additional information.
Kindly provide the information requsted in, the enclosure to enable us to complete our review. Submit three signed originals and 37 additional copies within 20 days of receipt of this letter.
Sincerely, Robert W. Reid, Chief Operating Reactors Branch #4 Division of Operating Reactors
Enclosure:
Request for Additional Information cc w/enclosure: See next page, z3 ORBICE*
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NRCM 0240 U) S. GOVERNMENT PRINTING OFFICEi 1976 - 626.624
Duke Power Company cc:
Mr. William L. Porter Duke Power Company P. 0. Box 2178 422 South Church Street Charlotte, North Carolina 28242 J. Michael McGarry, III, Esquire DeBevoise & Liberman 700 Shoreham Building 806-15th Street, NW.,
Washington, D.C. *20005 Oconee Public Library 201 South Spring Street Walhalla, South Carolina 29691
OCONEE NUCLEAR STATION REQUEST FOR ADDITIONAL INFORMATION SMALL BREAK ECCS MODIFICATIONS (DUKE JULY 14, 1978 SUBMITTAL)
- 1. Provide the following additional information relative to your proposal to modify the High Pressure Injection System at the Oconee Station:
- a. Do cross-over valves HP-116 and HP-117 remain closed? If not, when would they be opened?
- b. If during the ECCS injection mode the flow path to the RC pump seals has to be closed, describe how this is accomplished.
- c.
The piping tie-in from the proposed cross-connect lines to the existing injection system is downstream of flow meters 1FT7 and 1FT8. How can the operator e assured sufficient flow is reaching the core?
- d. Is any manipulation of the HPI system valving required for flow balancing after receipt of the ECCS injection signal?
- 2. You stated in the July 14 submittal that the electrically operated valves HPI-X and HPI-Y will have the motor operators powered by a source of power supply independent of that supplying power to the HPI-A and HPI-B flow trains. In regard to the electrical system, identify the buses to which all the HPI valves are connected (i.e. HP-24, -25, -26, -27, -X and -Y).
FSAR drawings may be referenced. Provide the channel classification of these valves.
Describe the provisions or procedures to ensure that valves HP-98 and HP-115 remain in the open position.