ML20003B726
| ML20003B726 | |
| Person / Time | |
|---|---|
| Site: | La Crosse File:Dairyland Power Cooperative icon.png |
| Issue date: | 02/18/1981 |
| From: | DAIRYLAND POWER COOPERATIVE |
| To: | |
| Shared Package | |
| ML20003B725 | List: |
| References | |
| NUDOCS 8102250368 | |
| Download: ML20003B726 (4) | |
Text
O' 37n PLANT SYSTEMS 4/5.2.21 EMERGENCY SERVICE WATER SUPPLY ~ SYSTEM LIMITING CONDITION FOR' OPERATION 4.2.21.1 The Emergency Service Water Supply System shall be OPERABLE, with:
a.
At least three portable gasoline engine-driven pumps connected in parallel and capable of delivering a combined flow of 900 gpm against a pressure of 50 psig within the reactor vessel.
b.
An operable flow path from the Mississippi River, censisting of pump suction and discharge hoses, a three-way ball valve distributor, and relay hoses capable of transfering water to a valved inlet manifold into the High Pressure Service Water piping system.
APPLICABILITY:
Operational Conditions 1, 2 and 3
-ACTION:
With only 2 pumps OPERABLE, restore the inoperable ecuipment to a.
OPERABLE status within twenty-four (24) hours and submit a report in accordance with Specification 3.9.2.
b.
With the ESWSS otherwise not OPERABLE:
1.
Verify OPERABLE status of the High Pressure-Service Water Fire Suppression Water System per Sections 5.2.18.1.1.a and 5.2.18.1.2.a within twenty-four (24) hours,and
-2.
Restore the ESWSS to OPERABLE status with at least three pumps within seven (7) days or be in at least HOT SHUTDOWN within the rext twelve (12) hours and in COLD SHUTDOWN within the folluwing twenty-four (24) hours.
3.
Submit a report in accordance with Specification 3.9.2.
4.
If I above cannot be satisfied, place the reacter in HOT SHUTDOWN within the next twelve (12) hours and in COLD SHUTDOWN within the following twenty-four (24) hours, a
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37o PLANT SYSTEMS SURVEILLANCE REOUIREMENTS 5.2.21.1.1 The Emergency Service Water Supply System shall be cemonstrated OPERABLE:
a.
At least once per 31 days by verifying that each manual or automatic valve in the flow path that is not locked, sealed, or otherwise secured in position is in its correct position.
b.
At least once per 12 months by cycling each testable valve in the flow path through at least once complete cycle of full travel.
At least once per 18 months, duriro reactor shutdown, by performing an c.
inteorated system test which directs coolant ficw through the Alternate Core Spray System test loop and back to the river.
1.
Verifying that the combined pump output develoos 900 ppm at a minimum system test pressure of 90 psig.
d.
At least once per 18 months, by performing a drill which assembles the system under simulated emergency conditiens.
5.2.21.1.2 Each Emergency Service Water Suppl.v System casoline engine driven pump shall be demonstrated OPERABLE:
a.
At least once per 7 days by verifying an acceptable built-in battery hydremeter indication, and voltage L 12 volts.
b.
At least once per 31 days by verifying that the fuel tank contains at least 5.0 U.S. gallons of gasoline, and that the crankcase oil is at a safe level.
c.
At least once per 6 months on a STAGGERED TEST BASIS by starting an engine / pump unit from ambient conditions and operating at least 20 minutes with pump load.
d.
At least once per 92 days by verifying that the fuel tank has been drained and replenished with fresh fuel, At least once per 6 months, by perfcrming inspection and naintenance e.
in accordance with written procedures.
f.
At least once per 18 months, by performing inspection and raintenance in accordance with written procedures.
37p PLANT SYSTEMS SURVEILLANCE REOUIREMENTS 5.2.21.1.3 Each Emergency Service Water Supply Systems pump suction hosa shall be demonstrated OPERABLE:
a.
At least once per 12 months, by testino the pump suction hoses and couplings at a pressure > 50 psig, and visually inspecting for damage and abnorr.al wear.
5.2.21.1.4 Each Emergency Service Water Supply Systems pelay hose, pump discharge hose, and the 3-way distributor shall be dertonstrated OPERABLE:
a.
At least once per 12 months, by testino the 5" relay hoses and couplings at a pressure > 225 psig and visually inspecting for damage and abnormal wear,_
b.
At least once per 12 nmths, by testing the purp 3" discharge hoses and couplings at a pressure 1 225 psig and visually inspecting for damage and abnormal wear.
c.
At least once per 12 months, by testing the 3-way distributor and couplings at a pressure 1 225 psig and visually inspecting for damage and abnorral wear, d.
At least once per 12 renths, by verifying that each 3-way distributor ball valve has been cycled through at least one complete cycle of full travel.
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37q PLANT SYSTEMS BASES 4/5.2.21 EMERGENCY SERVICE WATER SUPPLY SYSTEM The Emergency Service Water Supply System is designed to supply an additional alternate cooling source to the reactor. This backup water source is necessary because of the review of site liquefaction potential during seismic events.
The system enhances the safety factor in a seismic event where free field liquefaction at the Safe Shutdown Earthquake may, according,a the results of this review, cause failure of the Crib House structure and the underground high pressure service water piping connecting the Crib House to the Turbine Building.
The system consists of isolation valves to truncate the potentially damaged systems inside the Turbine Building, thus closing the pathway to seismically damaged piping, portable pumps capable of drawing a suction from the Mississippi River and the necessary hoses and hardware to connect the pumps to the Turbine Building piping, either inside the building or from the outside.
The system is capabic of supplying 900 gpm flow rate against a 50 psig reactor pressure.
The system installed piping can supply water to the High Pressure Core Spray System, the Alternate Core Spray System, the Fire Suppression Systems, the Shutdown Condenser and the Low Pressure Service Water System
-(which is the ultimate heat sink for decay heat).
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