ML20037B909
| ML20037B909 | |
| Person / Time | |
|---|---|
| Site: | Big Rock Point File:Consumers Energy icon.png |
| Issue date: | 03/29/1978 |
| From: | Ziemann D Office of Nuclear Reactor Regulation |
| To: | Bixel D CONSUMERS ENERGY CO. (FORMERLY CONSUMERS POWER CO.) |
| References | |
| NUDOCS 8101120390 | |
| Download: ML20037B909 (8) | |
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DISTRIBUTION:
Docket
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MAR 2 9197f 0
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Docket No. 50-155 NRC PDR VStello DZiemann Constasers Power Company SNowicki 0 ELD ATTN: Mr. David Bixel ACRS (16l Nuclear Licensing A&iinistrator 212. West Michigan Avenue 01&E (3)
Jackson, Michigan 49201 JJShea RDiggs Gentlemen:
DEisenhut TBAbernathy JRBuchanan We have completed our initial review of your report " Fire Protection Program Evaluation', dated March 29. 1977, and find that additional infomation is required to continue our review of the Big Rock Point fire protection program. The specific required information is identified in Enclosure 1.
As.a result of our initial review, we have identified issues for which staff positions exist.
Please review these positions identified in and inform us whether you will adopt these positions or propose acceptable alternatives.
Please provide your responses to the enclosures by July 15. 1978 Sincerely.
Or!;iralsihdby:
Derr.is L. 3;ccann D. L. Zienann, Chief Ooerating Reactors Branch #2 Division of Operating Reactors Enclocures:
1.
Request fo-Additional Inforraation 2.
Fire Protection Staff Positions cc w/ enclosures: See siext page l
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.i Consumers Power Company March 29,1978 cc' w/ enclosures:
Mr. Paul A. Perry, Secretary Consumers Power Company 212 West Michigan Avenue Jackson, Michigan 49201 J. L. Bacon, Esquire Consumers Power Company 212 West Michigan Avenue Jackson, Michigan 49201 Hunton & Freeman George C. Freeman, Jr., Esquire P. O. Box 1535 Richmond, Vi: ginia 23212 Peter y. Steketee, Esquire 504 ;eoples Building Grand Rapids, Michigan 49503 Charlevoix sublic Library 107 Clinton Street Charlevoix, Michigan 49720 t
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BIG ROCK POINT DOCKET NO. 50-155 REQUEST FOR ADDITIONAL INFORMATION
- 1. (IV-21)
(a)
Identify on drawings those floors, walls, and ceilings that were considered as fire barriers in the fire hazard analysis to prevent the spread of fire.
(b). Describe the required rating of these fire barriers.
(c) Verify that with the proposed modifications, doorway, ventilation duct, and electric cable penetrations of the fire barriers are sealed or closed to provide a fire resistance rating at least equal to that required of the fire barriers.
(d) Verify that fire doors are normally closed, and locked or alarmed.
- 2. (IV-25) Describe the separation criteria used for the routing of electrical cables.
- 3. (IV-31)
(a)
Identify the numoer of self-contained breathing units available for fire brigade and control room use.
(b) Verify that a recharge capability for breathing air bottles is provided so that each air mask has a 6 hour6.944444e-5 days <br />0.00167 hours <br />9.920635e-6 weeks <br />2.283e-6 months <br /> supply of reserve air.
4.(IV-32)
Describe the potential for a fire causing loss of normal and emergency lighting to areas providing access to safety-related areas that may be involved in the fire.
- 5. (IV-32)
(a)
Identify the number of portable radio communication units available for control room and fire brigade use.
(b) Cescribe the capability to use these units between the control room and all safety-related areas.
Numbers in parentheses refer to page numbe-s of CPC's Big Rcck Point Fire Protection Evaluation.
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- 6. (IV-35& Provide the design data for all automatic suppression systems IV-41)
(both existing and proposed) including such item as type of system; design densities; soak times; power supplies; method of actuation; and associated alarms.
7.'(IV-57)
Describe whether a loss of ventilation flow alarm is provided for the battery room ventilation systems.
- 8. (IV-59)
(a) Section F.10 states that the standby emergency diesel is not required for safe shutdown since the emergency diesel generator or offsite power could provide a.c. power.
s Describe how shutdown would be achieved for a fire affecting the emergency diesel generator if offsite power is not available.
(b) Describe whether the fire hazards analysis identified any areas where a fire may affect both the emergency and standby emergency diesel generators.
- 9. (IV-62) Section F.14 states that drums will be provided to enclose racioactive materials to ' preclude release of radioactive materials as a result of a fire. How much material is allowed to accumulate prior to loading and sealing the drums? Describe the effects cf releases, if any, for fires in this area.
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- 10. (VII-9)
Figure 3 references a "C'! System" and an "SCS" system, however these are not listed in the system code list en page VII-10.
Clarify what these systems are.
- 11. (VII-il For each fire area, identify whether offsite power is required to 138) for the shutdown /cooldown paths which were relied on to assure safe shutdown following a design basis fire.
Describe how safe shutdown would be achieved following a fire if offsite power is not available.
- 12. (VII-34 Several fire areas identify alternative methods that are being
-62,95, considered as proposed modifications.
Identify when the 108,112, alternative to be used for each area will be selected.
131)
If these have already been determined, provide details on the method selected for each area.
- 13. (VII-69) Section D.1 of fire area 17 states that a fire may cause loss of the 2.4 KV leads but that an alternative shutdown 4
method is available. Describe the alternate shutdown method.
- 14. (VII-79) Deteribe the alternate shutdown paths available for a design basis fire in fire ar-21, turbine lube oil area.
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- 15. (VII-106) -Section D states that safe shutdown could be achieved if the fire is contained within specific sectors of the r'.>om.
Describe the physical separation, barriers,~ or other '.tu es which assure a fire is contained within a specific sec;or.
16.(VII-132) Figure 4 shows the core spray system as a system that may be used in one of the alternative shutdown paths. However, the fire area 42 discussion does not list components of this system as safe shutdown equipment. Clarify this discrepancy.
Describe how shutdown would be achieved for a fire in fire area 42.
- 17. (VII-140) Provide a piping drawing showing interior hose station locations and interior suppression systems.
- 18. (VII-145)
(a)
Identify the quantity of lube oil in each of the recirculation pumps.
(b) Describe the effects on safe shutdown systems of recirculation pump lube oil fire.
(c)
Describe any oil collection measures provided on the recirculation pumps to collect and drain away oil leakage.
19.
Describe the capability to manually operate valves required for safe shutdown and accessibility of these valves should manual action become necessary.
20.
Describe whether portable smoke exhauster equipment and portable ductwork are available to supplement ventilation systems in z
smoke removal.
21.
Provide the results of fire tests performed to demorr..ne the adequacy of the cable penetration firestop design used in safety-related areas.
Sufficient information should be provided to demonstrate that the following is met: The cable penetration fire barriers should be tested to demonstrate a three-hour rating, as is required for fire barriers. The test should be performed or witnessed by a representative of a qualified independent testing laboratary, and should include the following:
(1) The test should be performed in accordance with ASTM E-il9 and the following conditions.
(2) The cables used in the test should include the cable insulation materials used in the facilit).
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] (3) The test sample should be representative of the worst case configuration' of cable loading, cable tray arrange-ment, anchoring and penetration fire barr'er size and design. The test sample should also be representative of the cable sizes in the facility.
Testing of the penetra-tion fire barr:1r 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 exposed side.
(5) The fire barrier should be tested in both directions unless the fire barrier is symmetrical.
(6) The fire barrier should be tested with a pressure differen-tial 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 insulation, cable conductor, cable tray, conduit, and fire stop material should be recorded for the unexposed side of the fire barrier.
(S) 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 livels recorded for the unexposed side are analyzed and demonstrate that the maximum temperature is sufficiently below the cable insulation ignition temperature, and' (c) The fire barrier remains intact and does not allow projection of water-beyond the unexposed surface during the hose stream test.
If the 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.
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22.
Your letter of April 5,1977 indicated that the effects of a postulated fire in a cable tray extending around two sides of the fuel pool structure had been onnitted in the fire hazards' analysis, and that a review of this tray was being performed.
Provide the results of this review.
23.
_Your letter of June 10, 1977 indicates that preliminary design work for proposed modifications will be completed in March.
1978. Provide the preliminary design details of proposed modifications numbers 7, 8, 9, and 11 listed in yeur letter of June 10, 1977.
24.(IV-42)
The licensee response states that the aooropriateness of installing shutoff valves on standpipes is bein, evaluated.
Describe the results of this evaluation and the proposed modifications.
25.(IV-64)
Clarify the statement that a fire will not preclude the release of radio activity.
26.(VII-la) Section 0.1 states that a fire could result in possible uncontrolled release of radioactive material; however, the only fire protection is provided by a hose station 300 feet away with 100 feet of hose, and a Class B C fire extinguisher where conbustibles are Class A.
Justify the fire protection for this area.
27.(VII-31) Section C.1 identifies certain safe shutdown circuits located in the cenetration room.
Section C.3 states that a detailed analysis of other safety-related circuits that pass through this fire area has not been oerfccmed.
Clarify whether all safe-shutdcwn circuits which cass through the penetration room have been identified and listed in Section C.1 28.(VII-63)
Describe whether the alxiliary boiler, including safety-combustion controls, compiles witr NFPA standards.
29.(VII-66)
(a)
Section 0.1 indicates that a fire causing loss of safe shutdown equionent listed in Section C.1 would not preclude safe shutdown.
Describe how safe shutdown could be achieved for a design basis fire in fire area 17.
(b) Verify that uo'on implementation of orcoosed modifications for fire area 17, fire barriers will be adeouate to creclude a fire from cropagating to adjacent fire areas.
30.(VII-94) Describe hcw safe shutdcwn would be achieved for'a design basis fire in fire area 29.
j 31.(VII-121) Describe how the modifications procosed for fire area 37 sill preclude a fire from affecting safe shutdown cacability.
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' ENCLOSURE 2 '
BIG ROCK POINT DOCKET NO. 50-155 FIRE PROTECTION STAFF POSITIONS Pl.
(IV-33&
Smoke detectors should be located in all areas containing FHA) safety related equipment.
P2.
(IV-42)
Hose stations should-be.provided such that all points Of safety-related areas and areas with major fire hazards can be reached with the hose line stored at the manual hose stations, not to exceed 100 feet of. hose.
P3.
(IV-46)
Portable extinguishers should be installed and maintained in accordance with NFPA 10.
P4.
tIV-525 Portable water or Halon 1211 extinguishers should be provided JII-48) in _the control room for class A fires.
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