ML19210A751
| ML19210A751 | |
| Person / Time | |
|---|---|
| Site: | Crane  |
| Issue date: | 04/17/1978 |
| From: | Reid R Office of Nuclear Reactor Regulation |
| To: | Herbein J METROPOLITAN EDISON CO. |
| References | |
| NUDOCS 7910310564 | |
| Download: ML19210A751 (15) | |
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April 17,1978 Docket V NRC PDR L PDR ORB #4 Reading Docket No. 50-289 VStello BGrimes/TCarter OELD OI&E(3)
Metropolitan Edison Company RWReid GZwetzig gray Hje ATTH: Mr. J. G. Herbein RIngram Vice President DEisenhut P. O. Box 542 TAbernathy Reading, Pennsylvania 19603
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' Tfl M Gentlemen:
jl g gd By letter dated May'16,1977, you submitted a Fire Hazards Analysis Report for Three Mile Island Nuclear Station, Unit No.1 (TMI-1). Based on our review of this subnittal we find we need additional information to continue our review. A list of the specific inforraation needed is given in Enclosure 1.
You should be pnpared to respand verbally to these questions at the time of the Site Visit of the Fire Protection Review Team (scheduled for the week of May 22,1978). Based on your response at that time certain of the questionr in Enclosure 1 may be
, deleted. - Written answers to the balance of ine questions should be submitted in time to be received by us no later than June 5,1,978..
A list of drawings which should be available at TMI-1 for the use of the Fire Pmtection Review Team during and following the Site Visit is given in Enclosure 2.
Note that five copies of each of the drawings draneeded.
8ditional staff positions relating to'fim protection developed in the course of our review of other facilities and subsequent to the develop-ment of BTP 9.5-1 and Appendix A thereto, are given in Enclosure 3.
You should indicate in the submittal which transmits your responses to the questions in Enclosure 1, your coweitment to conform to these positions.
Sinherely, x,-
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- Robert W. Reid. Chief.
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Enclosures:
1.
Request for Additional Information 2.
List of Drawings 3.
Additional Staff Positions cc w/ enclosures: See ne::t pace 1493 281
Metropolitan Edis Company cc:
G. F. Trowbridge, Esquire Shaw, Pittnan, Potts & Trowbridge 1800 M Street, it.W.
Washington, D.C.
20036 GPU Service Corporation Richard W. He-rd, Project !1anager Mr. T. Gary broughton, Safety and Licensing 11anager 260 Cherry Hill Road Parsippany, tiew Jersey 07054 Pennsylvania Electric Company f1r. R. U. Conrad Vice President, Generation 1001 Bro &d Street Johnstoun, Pennsylvania 15907
!!i ss !!ary V. Souti:ard, Chairr..,n Citi;: ens for a Safe Enviror lent P. O. Box 405 Harrisburg, Pennsylvania 1710G Governnent Publications Section State Library of Pennsylvania Box 1601 (Education Building)
Harrisburg, Pennsylvania 17126 A
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1493 282
ENCLOSURE 1 THREE MILE ISLAND NUCLEAR STATION, UNIT ~:
DOCKET NO. 50-289 RE0 VEST FOR ADDITIONAL INFORMATION 1.
Instrument Air System Verify that the effects of a fire on the instrument air system will not cause a transient more severe than those already analyzed in the FSAR, or prevent safe shutdown.
2.
Failure Analysis Provide a failure analysis which verifies that a single failure does not simultaneously impair the primary and bc -kup fire suppression capabilities. The analysis should include consideration of failures in the suppression system, the fire detection system cr the power sources for such systems.
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3.
Lightnino Effects Describe the means provided to prevent lightning from initiating fires which could damage safety-related equipment.
Describe the means pro-vided to prevent lightning from damaging the fire protection system.
4.
Effects of Extincuishina Systems Provide the results of an analysis which shows that rupture or inadver-tent operation of a fire fighting system will not subsequently cs 2se damage or failure of safety-related equipment recuired for safe shutdown.
5.
Safety-Related Systems Interlocked with Fire Fighting Systems Identify any safety-related systems or their auxiliaries which are interlocked to and could be disabled by operation of a fire fighting system.
6.
Fire Barrier For all barriers, describe the fire resistance ratinn of the associated floors, ventilation dampers and seals for cable, pipe and ventilation duct penetrations.
Identify the fire barriers, enclosina separate fire areas, that do not have minimum fire rating of three hours.
1493 283
-2 7.
Steel Structures Describe the type of fire protection, if any, applied to steel struc-Evaluate the possibility of fire damage to protected and tures.
unprotected steel structures and the effect of such damage on the safe plant shutdown capability.
.D D
8.
Safety Areas Without Fire Protection Identify all areas that contain safety-related equipment and/or cables
- in open cable trays that are not provided with either fire detection or automatic fire suppression.
Justify the lack of either of the above.
9.
Drains Provide the results of an analysis which shows that draias have (1) sufficient capacity, and/or equipment pedestals have sufficient height to prevent standing water from sprinklers and fire hoses from damaging safety-related equipment or supporting systems necessary for safe shutdown of the plant.
(2)
Identify the areas containing safe shutdown equipment that are net provided with floor drains.
Describe the drainage path for those areas without drains.
(3)
Identify the areas containing combustible liquids that are not provided with floor drains.
Describe the drainage path and provisions for containing or diverting the combustible liquids in those areas without drains. Where applicable, provide the results of an analysis that shows that curbed areas surround 1ng combustible liquid tanks have sufficient capacity to contain tne full contents of the tanks plus the cuantity of water required for extinguishment of a fire involving the combustible licuid.
In those areas with drains, state the capacity and locaticn of the drain reservoirs and describe the provisions to prevent the spread of flammable liquid fires via the drain system to areas which may jeopardize safety-related equipment.
10.
Pipe and Ventilation Duct Fenetrations Provide the results of an analysis that shows that the fire barrier penetration seals for pipe penetrations and ventilation ducts are adequate to prevent the spread of smoke and fire through the barrier considering the fire hazard and possible air pressure differential.
1493 284
. 11, Piping Containing Combustibles Identify all piping containing flammable or combustible gas or liquid which is routed through areas containing safety-related equipment, safety-related cables or through which personnel must pass to reach safety-related equiprent for local operation.
Provide an analysis to show that a fire involving the liquid or gas will not prevent safe shutdown or result in the loss of function of a safety-related system.
- 12. 1.aboratories and Storage Areas Identify all hazardous materials located in the laboratories and chemical storage areas.
Provide the results of an analysis of the consequences of a fire or explosion involving these hazards on safety-related equipment.
- 13. Combustible Fluid Reservoirs and Storage Provide a listing of all fixed tanks and pumps which contain oil or other flunmable or combustible fluid and indicate the location of the container and quantity and name of fluid contained.
Describe the fire protection provisions associated with each such location.
- 14. Interface Between Safety and Non-Safety Ecuipment Certain cables electrically connected to equipment necessary for safe shutdown may be used for functions designated as non-safety-related and, therefore, classified as non-safety-related.
Examples of these might be remote indicating lights for valves, breakers, etc.
Describe whether such cables are kept with the safety division to which they were originally connected and if not, describe thS effects on the safe shutdown equipment due to shorts to these cables as a result of fire.
- 15. Cable Insulation Materials Identify all types and quantities of cable used in or adjacent to areas containing safety-related equipnent or in cable trays containing safety-related cables.
For each type of cable, identify the materials used for insulation and jacketing.
- 16. Method of Heat and Smoke Venting Describe the methods which would be used for heat and smoke removal using either fixed or portable air handling equipment.
If tha plant HVAC systems are proposed for such service, provide design data te show that these systems are rated for the conditions (temperature and capacity) required when used for this service.
1493 285
. 17.
Prevention of Fire and Smoke Spread y;
Describe the manner in which firc and smoke are prevented fro 1 spread-ing from area to area via the normal and emergency ventilatien systems in all parts of the plant areas.
Describe the location, actuation method and all fire rating of dampers used for fire and smoke control in both air supply.nd return air systems.
Describe the dstails of interlocks for ventilation system shutdown or mode change that can be utilized for fire and smoke control.
Describe the reliability of such systems and th consequences of system failure.
- 18. Ventilation System Power and Control Identify areas where power and control cables of ventilation systems are routed through the fira area they serve.
Provide the basis for leaving ventilation systems power and control cables within the area they serve.
- 19. Automatic Operation of Fire Dampers / Doors Discuss the provisions for automatic closure of ventilation fire dampers and fire doors in all areas protected by total floodine ps suppression systems and provisions for re-opening the fire dampers remotely f'r post fire smoke venting.
- 20. Proximity of Regular and Emergency Lighting Wiring Provide the results of an evaluation of the potential for a fire to cause damage to electrical wiring whicn would result in the loss of both regular and emergency lighting to areas needed for safe shutdcwn and other areas providing access to safe shutdown equipment or the fire area.
Verify that AC energency lights that are used in lieu of 8-hour sealed beam DC units are supplied from vital AC buses.
- 21. Requirements for Manual Hose Stations Verify that all points of safety-related areas and other areas with major fire hazard can be reached with the hose line stored at the manual hose stations.
1493 286 Fire Hazard at the Containment Cable Penetration 22.
Identify the consequences on safe shutdown of a fire at the cable penetration area on either side of containment.
23.
Portable Extineuisher Ratino Verify th?.t at least one portable extinguisher in the control room has a Class A ' rating.
- 24. Fire hazards Associated with the Plant Computer Provide the results of an analysis which demonstrates that a fire within the conputer area will neither expose any safety-related equip-ment nor affect the safe plant shutdown.
Verify that the barrier around the area is compatible with the combustible loading in the area.
25.
Remote Shutdown Panels identify the location of all remote shutdown ' panels and provide the results of analysis to demonstrat. that no fire which could impair the control from the control room could also prevent the control from these areas.
- 26. Radioloqical Consecuences of a Fire Evaluate the radiological consequences of a fire in radwaste areas and other areas containing contaminated material such as filter cartridge, spent resin, etc.
- 27. Diesel Fuel Transfer Shut-off Describe the means provided to automatically and/or manually stop the transfer of diesel oil from the bunker tanks to the diesel generator day tanks in the event of a fire in the area housin; the day tank, or through which the fuel oil transfer piping is routed.
(Referenced page(s) in TMI-l's submittal are indicated in the parenthesis following the questions.)
- 28. Fi_re Detection System Design Provide design data for the automatic fire detection system in each fire area, including such items as type, number and location of the detectors; and signaling, power supply and supervision of the system, and identify any deviations from NFPA 720.
(Pg. 5-35) Describe tests which may have been conducted, or other means proposed, to verify the adequacy of the detection system design considering the air flow pattern and other relevant factors.
1493 287
29.
Fire Suppression System Desien Provide the design data for all automatic suppression systems (both existing and proposed), including such items as design densities, soak times, power supplies, and associated alarms.
Identify areas of non-compliance with appropriate NFPA Standards.
(Pg. 5-30) i 30.
For each fire area, describe the type and maximum quantity of tran-sient combustible material which might be found dcring each mode of plant operation.
Include, as a minimum: (Pg.2.2-4) 3 Protective clothing and equipment both clean and used (including contaminated);
Solvents and other cleaning materials used in maintenance, decontaminatfor. or other operations; Lubricating oils and other fluids which micht be a?ded to motors, pumps or other equipment from time to time; Wood, paper and other construction materials; I
Plasti ~c sheets and bags, used for transport, storage or protection of materials.
Describe the effect the presence o# such materials will have on fires postulated in each area of the plant, includino areas of the plant through which they are transported on the way to or from their point of use in or out of'the plant.
31.
Identify the ventilation systens which are not designed to isolate upon receipt of a fire signal, and the areas which they serve.
(Pg. 2.3-2 and 5-21) 32.
Identify combustible pipe and duct insulatina naterials in the plant, including locations, quantities, and type.
Verify that they were included in the fire hazard analysis.
(Pg. 5-14) 33.
Describe the acoustical ceilina material used in the control room.
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State the flame scread classification, fuel contribution, and smoke developrint' properties of this tile. (Pg. 5-14).
34.
Describe the floor drains modifications noted on Pg. 5-15. (Pg. 5-15)
- 35. Provide the rates at which the cascade system can replenish exhausted air bottles for various periods of time from one hour to six hours.
(Pg. 5-23) 1493 288
- 36. Provide 2 copies of cable test reports actually performed on cables which verify that cables in TMI-l have passed IEEE 383 test. (Pg. 2.2-5) 37.
Describe the minimum :eparation between redundant cables, includino interposing combustibles, in all areas where both divisions of cables in systems required for safe shutdown are routed in the same area.
- 38. Specify for the Control P.com, the actual minimum separation between redundant channels without barriers.
(Pg. 2.3-9)
- 39. Provide doccaentation which verifies that the Johns Manville Marinite 65 insulation is qualified as a fire barrier. (Pg. 2.3-6 and 2.3-7)
- 40. Describe the criteria that classifies the fire loading (in BTU /sq.ft.)
as " minimal."
(Pg. 2.3-13) 41.
Describe separation of redundant communication cables at penetrations to Containment.
(Pg. 5-24) j i
- 42. Provide the results of the most recent test of each of the Nre pumps, and include the pump discharge / pressure curves.
(Pg. 5-26) l
- 43. State the pump discharge pressure associated with the maximum system flow rate of 2575 gpm.
(Pg. 5-27)
Considering the maximum possible losses due to systen friction, routing, and differences in elevations, verify that the pressure available at the point of 2575 apm flow require-ment is adequate for proper operation of the suppression system.
- 44. Describe the special adapters required for compatibility of the plant fire hydrant threads with the threads of the loco fire departments.
Describe how many adapters are provided and where they are kept.
(Pg. 5-28) 45.
Identify the make and model of the electrically safe hose nozzles used in the plant.
(Pg. 5-36)
- 46. Describe the smallest fires in the Containment which can be detected by the installed detectors in their present locations, providing the results of any tests which may have been conducted.
(Pg. 5-33)
- 47. Verify that the insulation on control cable and wirino was included as a combustible material in the fire hazards analysis.
If not, justify this omission or revise the fire hazards.
(Pg. 5.5-1 and 4.4-2) 48.
Provide basis for stating the provisions of F.3(b) of Appendix A to BTP 9.5-1 concerning the cable spreading room are not applicable.
(Pg. 5-37) 1493 289 e
49.
Indicate the fire resistance rating of the barriers between redundant make-up and purification pumps, including the ratings of any penetra-tions of these barriers.
(Pg. 5-41)
- 50. Verify that " safe shutdown" means " cold shutdown" in all cases.
(Pg.
5-45)
- 51. State the assumptions used in your fire hazards analysis regarding loss of function of cables enclosed in conduit and interlocked armor as a result of a fire.
(FSAR Pg. 8-Sa) 1493 290 O
ENCLOSURE 2 THREE MILE ISLAND NUCLEAR PLANT, UNIT 1 DOCKET NO. 50-289 REQUEST FOR DRAWINGS Metropolitan Edison is requested to have 5 copies of the following drawings on hand whea the review team visits the plant site.
1.
Dimensioned plan drawing of fire service water system marked with valve supervision and proposed modification (s) in the system.
2.
Ventilation and one-line drain diagrams of various areas in the plant.
3.
Electrical one-line distribution diagrams.
4.
Electric tray layout drawings.
5.
Control logic diagram for each of the 4-2500 gpm fire pumps.
6.
General arrangement of the plant, especially of containment.
1493 29l e
ENCLOSURE 3 i.AEE MILE ISL/4D NUCLEAR PLANT,.4IT 1 DOCKET NO. 50-289 STAFF POSITIONS P1 Electrical Cable Penetration Qualification P2 Fire Water Valve Supervision P3 RC Pump Lube Oil Collection System P4 Fire Detector in Control Room Cabinets and Consoles P5 Fire Door Supervision 1493 292 9
e 8
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P1 Electrical Cable Penetration Qualification The cable penetration fire barriers should be tested to demonstrate a three-hour rating, as is required for fire barriers. The test should be perforced or witnessed by a representative of a qualified independent testing laboratory, and should include the following:
(1) The tests should be performed in accordance with ASTM E-119 and the following conditions.
(2) The cables used in the test should include the cable insulation materials used in the facil'ty.
The test sample should be representative of the worst case (3) configuri,,on of cable leading, cable tray arrangement, anchor-The test ing and penetration fire barrier size and design.
sample should also be representative of the cable sizes in the facility. Testing of the penetration fire barrier in the floor configuration will qualify the fire stop for use in the wall configuration also.
(4) Cables penetrating the fire barrier should extend at least three feet on the unexposed side and at least one foot on the exposeo side.
(5) The fir barrier should be tested in both directions unless the fire barrier is symetrical.
The fire barrier should be tested with a pressure differential (6) across it that is equivalent to the maximum pressure differential a fire barrier in the plant is expected to experience.
(7) The temperature levels of the cable insu,lation, cable conductor, cable tray, ennduit, and fire stop material should be recorded for the unexposed side of the fire barrier.
(8) Acceptance Criteria - The test is successful if:
(a) The cable penetration fire barrier has withstood the fire endurance test without passage of flame or ignition of cables on the unexposed side for a period of three hours, and (b) The temperature levels recorded for the unexposed side are analyzed and demonstrate that the maximum temperature is sufficiently below the cable insulation ignition temperature, and 1493 293 e
2-(c) The fire barrier remains intact and does not allow projection of water beyond the unexposed surface during the hose stream test.
If previous tests can be shown to meet the above position, the licensee should provide the results of the tests to show that the above position is met.
P2 Fire Water Valve Supervision All valves in the fire water systems should be either electrically supervised, or locked open or provided with a tamper proof seal, and administratively controlled.
P3 RC Pumo Lube Oil Collection System Each reactor coolant pump should be provided with an oil collection system to contain lube oil leakage and drain the leaked oil to a safe place.
P4 Fire Detector in Control Room Cabinets and Consoles Each of safety-related cabinets and consoles in the control room should be provided with a fire detector.
P5 Fire Door Supervision All fire doors should be electrically supervised with time delayed alarm in a constantly occupied area, or locked closed.
1493 294
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