ML19344E425
| ML19344E425 | |
| Person / Time | |
|---|---|
| Site: | McGuire, Mcguire  |
| Issue date: | 07/10/1980 |
| From: | Parker W DUKE POWER CO. |
| To: | James O'Reilly NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION II) |
| Shared Package | |
| ML19344E420 | List: |
| References | |
| NUDOCS 8008280541 | |
| Download: ML19344E425 (4) | |
Text
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.V Duxe POWER COMPANY Powza Deut.onwo 422 Sourn Cnuncu Srarer, CnAntorre, N. C. 2e24a July 10,1980 ' m 15 4 : 1I wiw Ae4 o. ma a a c a. s a.
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$ttano PacDwC?iom 373-4083 Mr. James P. O'Reilly, Director U. S. Nuclear Regulatory Commission Region II 101 Marietta Street, Suite 3100 Atlanta, Georgia 30303 Subj ect: McGuire Nuclear Station Docket No. 50-369, -370
Reference:
RII:WHM 50-369/80-11 50-370/80-07
Dear Mr. O'Reilly:
As requested by Mr. C. E. Murphy's letter of June 17, 1980, please find attached a response to the deviation identified in the subject inspec-tion report.
Duke Power Company does not consider any information contained in IE Inspection Report No. 50-369/80-11, -370/80-07 to be proprietary.
Very truly yours,
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William O. Parker, Jr.
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OPTICIAL COPY 8008280 SY/
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,t MCCUIRE NUCLEAR STATION Response to IE Inspection Report 50-369/80-11, -370/80-07 DEVIATION Section E.3.(c) of the McGuire Nuclear Station Fire Protection Review dated September 1977 and Revised January 1979 states that the fire protection sprinkler systems conform to the National Fire Protection Association (NFPA)
Standard Nos. NFPA-13, Sprinkler Systems and NFPA-15, Water Spray Fixed Systems.
Contrary to the above, the sprinkler systems do not fully meet all of the provisions of NFPA-13 and NFPA-15.
Examples of discrepancies include:
1.
Pendent type sprinkler heads installed in upright position. Section 3-16.2 of NFPA-13 requires sprinklers to be installed to conform to their distinct design criteria.
2.
Ordinary degree sprinklers (1650F) installed in high temperature areas.
Section 3-16.6 of NFPA-13 provides design criteria for installation of sprinklers in specified temperature areas.
3.
Pipe of 1/2-inch diameter is used to supply sprinkler heads for some systems.
Sections 3-5, 3-6, 3-7, and 7-1.1.2 of NFPA-13 and Section 4-9.1 of NFPA-15 specifically prohibits the use of any piping smaller than one-inch in diameter.
4.
Obstructions to proper discharge of water from the sprinkler systems exist in a number of areas due to cable trays, piping, ducts, structural steel supports, etc., located beneath the sprinklers.
Section 4 of NFPA-13 gives specific guidance to assure minimum interference or obstructions from proper discharge of the system in the event of fire.
5.
Water flow alarm devices either not provided or improperly installed.
Sections 3-9.1.2, Figure A-3-9.1.2, 3-17.3, 3-17.4 and 3-17.6 of NFPA-13 contains the design and installation criteria for sprinkler system water flow alarm devices.
6.
Control and sectional valves for some portions of the fire protection piping systems are not of the indicating type.
Section 3-14 of NFPA-13 requires all valves controlling the water supply to sprinkler systems to be of an approved indicating type valve.
RESPONSE
1.
It was determined that pendent sprinkler heads were installed in 'the upright position in several locations. A review of all sprinkler heads was conducted.
Sprinkler heads installed in this position will be replaced prior to September 1, 1980.
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2-1 2.
It was determined that there were several areas where 165 F rated sprinklers'
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heads were installed where drawings called for 2120F sprinklers.
Sprinklers will be replaced as necessary to meet the drawing criteria except for the sprinklers located in the Annulus area. These changes will be completed prior to September 1, 1980.
For the Annulus area, it was determined that the maximum temperature in the Annulus is 9d F during normal conditions and 14d F during accident conditions, therefore, the sprinklers in this area which are rated at 165 F will not be replaced and ar e in accordance with NFPA-13 Table 3-16.6.1.
3.
It was determined that pipe of 1/2-inch diameter was used to supply sprinkler heads for portions of the Annulus and the Reactor Coolant Pump Sprinkler Systems. The 1/2-inch pipe in the Annulus area sprinkler system has been reviewed and hydraulic calculations have been performed. These calcul. ions conclude that the system will meet flow and pressure requirements as installed.
The 1/2-inch pipe for the Reactor Coolant Pump Sprinkler System will be replaced by September 1, 1980.
4.
A site survey has been conducted in the Auxiliary and Reactor Buildings to review obstructions of proper discharge of sprinkler heads. Certain obstruc-tions have greatly reduced the effectiveness of the sprinklers and in these areas the' sprinkler system will be upgraded. Other obstructions are not as serious and it has been determined that sprinklers for these areas afford adequate protection.
These modifications will be completed by September 1, 1980.
5.
Water flow alarms located in the Cable Room, Annulus and pipe corridor will be upgraded from water-paddle alarms to alarm check valves. Test pipe will be installed for testing water flow alarm devices located in the following areas; Auxiliary Feedwater Pumps, Annulus, Component Cooling Pumps at elevations 750 + 0, and Nuclear Service Water Pumps. These modi-fications will be completed by September 1, 1980.
6.
It was determined that ene of the valves referred to was a containment isolation valve of the air-operated diaphragm type. This type of valve is an exception to NFPA Code in order to meet ANSI N18.2 " Nuclear Safety Criteria for the Design of Statienary Pressurized Water Reactor Plants."
Other valves in the fire protection system which are not of the indicating type shall be locked in the open position or alarmed.
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MCGUIRE NUCLEAR STATION Other Open items Emergency Lights (9), (19B), (46) and (68)
TheFireProtectionReviewforMcGuireNuclearStationstaiesthatemergency lights with 8 hour9.259259e-5 days <br />0.00222 hours <br />1.322751e-5 weeks <br />3.044e-6 months <br /> battery power supply is provided for the RHR Pump Room,.
Nuclear Service Water Pumps, and Component Cooling Pumps. The rire Pr'otec-tion Review is in error and should state that switchgear from which these pumps can be manually controlled are provided with emergency lights.
These emergency lights have been installed in the Seitchgear Rooms on elevation 733 + 0 and 750 + 0.
The concept for providing emergency lights was reviewed with the NRC Staff in a meeting on September 27 and 28, 1978.
Fire Detection (22)
The Fire Protection Review states that ionization, rate of rise and fixed temperature, fire detectors are provided for the Diesel Rooms.
Further review indicated that ionization detectors are not appropriate for use in a diesel room since this type detector may alarm each time the diesel is started. Therefore, only rate of rise and fixed temperature detectors will be installed.
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