ML20072H089
| ML20072H089 | |
| Person / Time | |
|---|---|
| Site: | Beaver Valley |
| Issue date: | 03/14/1983 |
| From: | Purple R Office of Nuclear Reactor Regulation |
| To: | |
| Shared Package | |
| ML20072H075 | List: |
| References | |
| TAC-11111, NUDOCS 8303290270 | |
| Download: ML20072H089 (5) | |
Text
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7590-01 UNITED STATES NUCLEAR REGULATORY COPMISSION DOCKFT NO. 50-334 DUOUESNE LIGHT COMPANY OHIO EDISON COMPANY PENNSYLVANIA POWER COMPANY NOTICE OF EXEMPTION.FROM APPENDIX R TO 10 CFR 50 FIPE PROTECTION RE0llIREMENTS The U. S. Nuclear Regulatory Commission (the Commission) has granted an Exemption from certain requirements of Appendix R to 10 CFR 50 to Duquesne Light Company, Ohio Edison Company and Pennsylvania Power Company (the licensees).
The Exemption relates to the Fire Protection Program for the Beaver Valley Power Station, Unit No.1 (the facility) located in Beaver County, Pennsylvania.
The Exemption is effective as of March 14, 1983.
The Exemption waives certain requirements of Subsection III.G and III.L for this facility. Details are provided in the Exemption and are sumarized as follows:
1.
Control Room The dontrol Room is separated from other plant areas. by three-hour rated fire barriers, is manned continuous 1i, has low combustible loading and is equipped with fire detectors and portable fire extinguishers. A remote emergency auxiliary shutdown panel and a backup instrument panel are provided away from the control room.
An exemption from Subsection III,G.3 b is granted to the extent that an automatic suppression system is not needed.
4 2
Charging Pump Cubicles in the Primary Auxilfary Ruilding This area does not comply with Section III.G 2.b because an automatic suppression system is not provided. Because the combustible loading is low, partial height walls between the charging pumps, 8303290270 830314 PDR ADOCK 05000334 F
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.and one-hour barriers and smoke detectors are provided, these alternative features will provide reasonable assurance that one train of charging pumps will be maintained free of fire damage for a sufficient period to enable the fire brigade to respond and manually extinguish a fire. This exemption is granted.
3.
Reactor Contairunent The protection for redundant tratns of safe shutdown equipment inside containment does not meet the technical requirements of Section III.G.2.b because there is not 20 feet of separation between redundant power cables free of intervening combustibles.
Due to their~ configuration and location within the containment and to the restricted access of these sub-areas during plant operations, an exposure fire involving the accumulation of significant quantities of transient combustible materials is unlikely. Because there are only a few cables in these sub-areas 1
and all cables inside containment are qualified to a test comparable I
1 to that of IEEE Standard 383'and routed in conduit, a fire of sufficient magnitude to daara.ge redundant cables or components is I
also unlikely. This exemption is granted.
4 Pipe Tunnel This area is not provided with an automatic suppression system and' l
l 20 feet of separation free of intervening combust"tbles between redundant components of alternative shutdown capability. If a j
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fire did occur, there is approximately 1/2-hour to manually operate the necessary valves if a loss of offsite powei occurst if such a loss does not occur these valves would remain operable, Because of the time available to take manuel control of the backup system, there is reasonable assurance that one train of components will be available for cooling the containment air recirculation coils. This exemption to Subsection III.G.2.b is granted.
5.
Cable Tunnel Subsection III.G.2,b requires 20 feet of separation free of intervening combustibles between cables. Based on our evaluation, the level of existing protection in cable tunnel CV-3 in conjunction with the proposed Halon 1301 system provides a level of fire protection equivalent to the technical requirements of Section III.G of Appendix R.
Therefore, the exemption is granted.
6.
HVAC Ductwork for the Charging Pump Cubicles The licensee has proposed to install li-hour fire dampers in common 'uctwork that penetrates three-hour.-rated fire barriers.
d We note that this does not comply with the Section III.G.2.a requirements for three-hour-rated barriers between redundant i
components. Because smoke detection, li-hour-rated fire dampers, and duct insul'ation are provided, there is reasonable assurance that a fire in one charging pump cubicle will be promptly detected and extinguished by the fire brigade before -
l the redundant pupms are damaged. This exemption is granted, i
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7590-01 4
7.
Use of portable Fans in Charging Pump Cubicles and Emergency Switchgear Room These areas contain equipment essential for hot shutdown. Loss of their normal HVAC systems means that the temperature will rise rapidly, thus damaging or prematurely aging the equipment housed inside these areas. The proposed use of the gasoline-powered fans is considered a repair, which ts not allowed by the requirement of III.G.1.a.
Repairs which can be accomplished within 72 hours8.333333e-4 days <br />0.02 hours <br />1.190476e-4 weeks <br />2.7396e-5 months <br /> are pennf tted for cold-shutdown-related equipment. However, the licensee has shown, by analysis, that there is a time period of approximately 1 to 2 hours2.314815e-5 days <br />5.555556e-4 hours <br />3.306878e-6 weeks <br />7.61e-7 months <br /> during which these fans would not need to be employed. Because of this time factor, we accept the use of portable fans as backup HVAC equf pment for these areas. This exemption is granted.
8.
Cold Shutdown Capability The licensee has requested an exemptfon from the 72-hour requirement to achieve cold shutdown, per Section III.L of Appendix R.
The licensee proposed to use the method of solid steam generator to achieve cold shutdown only when the RHR system is not available.
n It will need 127 hours0.00147 days <br />0.0353 hours <br />2.099868e-4 weeks <br />4.83235e-5 months <br /> to achteve cold shutdown. Since this method I
is used only when offsite power and RHR are 1os't, we consider the j
extended cold shutdown time, from 72 hours8.333333e-4 days <br />0.02 hours <br />1.190476e-4 weeks <br />2.7396e-5 months <br /> to 127 hours0.00147 days <br />0.0353 hours <br />2.099868e-4 weeks <br />4.83235e-5 months <br />, acceptab]e.
This exemption is granted.
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7590-01 5-The request for Exemption complies with the standards and requirements of the Atomic Energy Act of 1954, as amended (the Act),' and the 'Comission's rules and regulattons. The comissbn has made appropriate findings as required by the Act and the Commission's rules and regulations in 10 CFR which are set forth in the Exemption, The Commission has detemined that the granting of this Exemption will not result in any significant environmental impact and that pursuant to 10 CFR 851.5(d)(4) an environmental impact statement or negative declaration and environmental impact appratsal need not be prepared in connection with issuance of this Exemption.
For further details with respect to this action, see (1) the application for Exemption dated June 30, 1982, as revised October 28 and December 21, 1982, (2) the Commission's letter dated March 14,1983, and (3) the Exemption.
All of these items are available for pubite inspection at the Comission's Public Document Room,1717 H Street, N.W., Washington, D.C. and at the j
B. F. Jones Memorial Library, 663 Franklin Avenue, Aliquippa, Pennsylvania.
15001. A copy of items (2) and (3) may be obtatned upon request addressed to the U. S. Nuclear Regulatory Commission, Washington, D.C, 20555, Attention:
Director, Division of Ltcensing.
Dated at Bethesda, Maryland, this 14th day of March,1983.
FOR THE NUCLEAR REGULATORY COMMISSION r.
t Robert A. Purple, Deputy Director Division of Licensing -
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