ML17249A163
| ML17249A163 | |
| Person / Time | |
|---|---|
| Site: | Ginna  |
| Issue date: | 09/28/1979 |
| From: | White L ROCHESTER GAS & ELECTRIC CORP. |
| To: | Ziemann D Office of Nuclear Reactor Regulation |
| References | |
| NUDOCS 7910050408 | |
| Download: ML17249A163 (9) | |
Text
E'Q~
REGULATORY INFORMATION DISTRIBUTION SYSTEM (RIDS)
SUBJECT:
Forwards add1 info required by 790214 fire protection safety evaluation+
DISTRIBUTION CODE':
A006S COPIES RECEIVED:LTR g ENCl J SIZE TITLE: Fir e Protection Information (After Issuance of Op,Lic,)
N TES ~. / Pc./:
O')YRf'/9AE'~
~
C..
@OF'rnmr~ E'6'.
OTES mneme wwwl&mlp%lwwyowwwwwtwtsmo<<yeawgwrawee~lslmeamofwak&%0
~+MLI&wwww&wwwwwww&'wwwMwww RECIP IENT'OPIES RECIPIENT COPIES ID COOK/NAME LTTR ENCL ID CODE/NAME lTTR ENCL 05 BC ORB~~
4 4
ACTION:
ACCESSION NBR:7910050408 DOC,DATE: 79/09/28 NOTARIZED:
NO DOCKET FACIL!50 244 Robert Emmet Ginna Nuc)ear P)antg Unit ii Rocheste'r G
05000244 AUTH'AME AUTHOR AFFILIATION WHITE'g L ~ D ~
Rochester Gas 8 Electric Cor p<
RKC IP ~ NAME RECIPIENT AFFILIATION ZIEMANNrD,L, Operating Reactors Branch 2
INTERNAL: 01 09 I8 12 AUXIL SYS BR 19 WAMBACH OELD EXTERNAL! 03 LPDR 22 ACRS 1
1 2
2 2
2 1
1 1
0 1
16 16 02 NRC PDR 11 TA/EDO 14 PLANT SYS BR 20 MURANAKAgR 04 NSIC 1
1 1
5 5
1 1
1 1
OCT 10 1S79
3 fl 1
l~
~
I
I~
l P
~
~:
~
~
C
//>>87/>>>>
/!EIS>>
//////
>>/
/>>>>>>/>>///
ROCHESTER GAS AND ELECTRIC CORPORATION D
S9 EAST AVENUE, ROCHESTER, N.Y. 14649 I.EON D. WHITE, JR.
VICE PRESIDENT TELEPHONE AREA CODE 7ld 546.2700 September 28, 1979 Director of Nuclear Reactor Regulation Attention:
Mr. D. Ziemann, Chief Operating Reactors Branch g2 Division of Operating Reactors U.S. Nuclear Regulatory Commission Washington, DC 20555 Re:
Fi're Protection at. R. E. Ginna Nuclear Power Plant Docket No. 50-244
Dear Mr. Ziemann:
The Fire Protection Safety Evaluation Report for Ginna Station dated February 14, 1979 requested studies and additional informa-tion.
Those items due for submittal in September 1979 are included in Attachment A.
Very truly yours, d'.
D. White, Jr.
4
'l P't l
Attachment A
Additional Information Required by the Fire Protection SER dated February 14, 1979 Item 3.1.2 (SER) Hydraulically designed deluge systems will be in-stalled in the Auxiliary Building basement and intermediate floors for areas of heavy cable tray concentrations, the Intermediate Building heavy cable tray concentrations and the turbine driven auxiliary feedwater pump, the Control Building mechanical equipment room heavy cable tray concentration
- area, and the Screen House
- basement, heavy cable,,tray concentration area.
These systems will be designed, installed, and tested based on NFPA Standard 15 and will generally have a water density of 0.5 gpm per sq. ft. of floor area.
The charcoal filter in the intermediate floor of the Auxiliary Building will have the factory installed deluge system connected up and will operate automatically.
\\
A standard hydraulically designed sprinkler system will be installed over the service water pumps in the Screen House.
This system will meet the requirements of NFPA Standard 13 for design, installation, and testing.
All fixed suppression systems will be fed from a source that can be or is separated from the supply to the hoses in the area.
Where necessary, a secondary feed will be installed to the existing hoses and isolation valves installed so that all hoses in a given building cannot be out of service from one break or other event.
Item 3.1.21 (SER) This item covers the water curtain to be in-stalled on the steel diaphragm under construction to separate the control room from the operating floor of the turbine building.
Due to a delay in getting approval for the diaphragm wall, the design of the water curtain has been delayed.
Draft specifications and drawings have been prepared.
The water curtain will be a hydraulically designed deluge 'system with a density of.25 gpm/sq. ft. over the entire surface area.
Detection will be by means of heat-actuated, rate-compensated type with 160'F temperature rating not spaced more than ten feet on centers.
Baffle plates or collectors not smaller than 12 inches square shall be furnished.
Any two detector actuations will actuate the deluge system auto-matically.
A redundant, manual water feed.will be installed which will be operable from outside the east. wall of the turbine building.
The systems will be designed, installed, and tested per NFPA Standards 15, 72D, -and 72E.
- ~
II tl
Item 3.1.46 (SER)
The auxiliary boiler was purchased to conform to the ASME Boiler Code, all requirements of Factory Mutual, and approval by Underwriters'aboratories as a unit.
The Hartford Steam Boiler Inspection and Insurance'ompany inspects this boiler regularly (internally and externally at least yearly) and at times have suggested special maintenance be done.
However, their comments have been very favorable and they have reported that they are very pleased to note the high order of mechanical maintenance and general cleanliness of the boiler unit.
American Nuclear Insurers also inspect against their standards and have only suggested one modification which was not originally installed.
This was done and they are totally satisfied with the present installation and current maintenance.
The current issue of NFPA Standard 85-1976 has been reviewed and the auxiliary boiler unit has been inspected against this standard.'he following deviations were noted:
1.
'A pressure gage is not located in the fuel line ahead of the pilot line take off.
Pressure regulators are located ahead of the pilot take off in addition to the pressure regulators in the pilot line and main burner line.
A pressure gage is not deemed necessary since the other regulators are preset to maintain specific pressures and tested periodically.
2.
The boiler control valve is located after the burner line pressure gage and manual plug valve.
The variation in sequence is acceptable because all safety devices are installed and the manual valve is more accessible than if it, were located after the burner control valve.
3.
The pilot. line does not have redundant safety shut off valves nor a vent valve.
The line is very small and low pressure (max.
5 inches of water column or 0.18 psi.).
Any leakage or component failure would release minimal amounts of gas (max. 3.33 CFM) into the boiler and this would be vented through the flue system very easily and automatically to the exterior of the building.
In addition, the boiler is purged automatically prior to the next ignition.
A redundant manual plug valve is installed in this line.
The suggested guide schedule for inspection and mainte-nance is not being followed.
The Hartford Steam Boiler and Insurance Company has furnished us with test and check sheets for items that they desire us to test and maintain at Certain intervals.
These sheets are utilized as an acceptable alternate to the suggested guide schedule in NFPA 85. It should be noted that the NFPA Standard states that the typical schedule is a guide only.
~'O W
'4
The auxiliary boiler is installed, inspected,
- tested, and maintained to a high degree of safety.
The minor variations with NFPA Standard 85-1976 do not constitute a hazard nor warrant any changes.
Item 3.1.48 (SER)
A new hydrogen storage building will be con-structed remote from the Auxiliary Building.
New hydrogen lines will be run from this building to the existng hydrogen line to the volume control tank and the existing hydrogen line to the hydrogen recombiner in the vicinity of the volume control tank.
The hydrogen supply in the Nitrogen Storage Building and hydrogen lines from this building to the Auxiliary Building will be removed.
The line to the volume control tank will not cross any cable trays.
Based on this modification, the proposed barrier wall between the Nitrogen Storage Building and the Auxiliary Bu'ilding (Item 3.1.8 SER) is not necessary and will not be constructed.
Item 3.2.6 (SER)
The plant was reviewed for locations of com-bustible liquids as well as flammable liquids.
The drainage systems for these areas were then reviewed to determine if any of these liquids could drain to a safety related area via the drains.
Plugging of the drain system was anticipated downstream so that the worst, conditions were anticipated.
Drainage in the Containment, Auxiliary Building Basement, Intermediate Building Basement, and the B Diesel Generator Room will be modified to ensure that. com-bustible or flammable liquids will not, be allowed to flow via the drain systems to a separate safety related area.