B13794, Proposed Tech Specs Re Surveillance Requirements for Hydrogen Recombiners
| ML20072T198 | |
| Person / Time | |
|---|---|
| Site: | Millstone  |
| Issue date: | 04/05/1991 |
| From: | NORTHEAST NUCLEAR ENERGY CO. |
| To: | |
| Shared Package | |
| ML20072T193 | List: |
| References | |
| B13794, NUDOCS 9104180012 | |
| Download: ML20072T198 (4) | |
Text
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Docket No. 50-423 B13794
-Millstone Nuclear Power Station, Unit No. 3 Proposed Technical Specification Change Hydrogen Recombiners April 1991 bO"$00bk $ bob, $3 P
INDEX LIMITING CONDITIONS FOR OPERATION AND SVRVEILLANCE REQUIREMENTS SECTION IME Air Temperature...................................
3/4 6 9 Containment Structural Integrity..................
3/4 6-10 Containment Ventil ation System....................
3/4 6 11 3/4.6.2 DEPRESSURIZATION AND COOLING SYSTEMS Containment Quench Spray System....................
3/4 6-12 Recirculation Spray System.........................
3/4 6-13 Spray Additive System..............................
3/4 6-14 3/4.6.3 CONTAINMENT ISOLATION VALVES.......................
3/4 e-15 3/4.6.4 COMBUSTIBLE GAS CONTROL Hydrogen Monitors..................................
3/4 6-35 Electric Hydrogen Recombiners......................
3/4 6-36 3/4.6.5 SUBATHOSPHERIC PRESSURE CONTROL SYSTEM Steam Jet Air Ejector..............................
3/4 6 37 3/4.6.6 SECONDARY CONTAINMENT Supplementary Leak Collection and Release System...
3/4 6-38 Enclosure Building Integrity.......................
3/4 6-40 Enclosure Building Structural Integrity............
3/4 6-41 3/4.7 PLANT SYSTEMS 3/4.7.1 TURBINE CYCLE S a fe ty V a l v e s...........................................
3/4 7-1 TABLE 3.7-1 MAXIMVM ALLOWABLE POWER RANGE NEUTRON FLUX HIGH SETPOINT WITH IN0PERABLE STEAM LINE SAFETY VALVES DURING FOUR LOOP OPERAT10N.........................
3/4 7-2 TABLE 3.7-2 MAXIMUM ALLOWABLE POWER RANGE NEUTRON FLUX HIGH SETPOINT WITH INOPERABLE STEAM LINE SAFETY VALVES THREE LOOP OPERAT10N..............................
3/4 7-2 MILLSTONE - UNIT 3 ix Amendment No. S 0043
CONTAINMENT SYSTEMS ELEC' C HYDROGEN RECOMBINERS llMITING CONDITION FOR OPERATION 3.6.4.2 Two independent Hydrogen Recombiner Systems shall be OPERABLE.
APPLICABillTY:
MODES 1 and 2.
ACTION:
With one Hydrogen Recombiner System inoperable, restore the inoperable system to OPERABLE status within 30 days or be in at least HOT STANDBY within the next 6 hours6.944444e-5 days <br />0.00167 hours <br />9.920635e-6 weeks <br />2.283e-6 months <br />.
SVRVEILLANCE RE0VIREMENTS 4.6.4.2 Each Hydrogen Recombiner System shall be demonstrated OPERABLE:
a.
At least once per 6 months by verifying during a Hydrogen R0 combiner System functional test that the minimum reaction chamber gas temper-ature increases to greater than or equal to 700'F within 90 minutes and is maintained for at least 2 hours2.314815e-5 days <br />5.555556e-4 hours <br />3.306878e-6 weeks <br />7.61e-7 months <br /> and that the purge blower operates for 15 minutes, b.
At _least once per 18 months by:
1)
Performing a CHANNEL CALIBRATION of all recombiner instrumenta-tion and control circuits, 2)
Verifying through a visual examination that there is no evi-dence of abnormal conditions within the recombiner enclosure (i.e., loose wiring or structural connections, deposits of foreign materials, etc.),
3)
Verifying the integrity of all heater electrical circuits by performing a resistance to ground test following the above required functional test.
The resistance to ground for any heater phase shall be greater than 10,000 ohms, and 4)
Verifying during a recombiner system functional test using con-tainment atmospheric air at a flow rate of greater than or equal to 70 scfm at a containment temperature of greater than or equal to 55'F and a containment pressure of less than or equal to 15 psia, that the gas temperature increases to greater than or equal to 1100*F within 5 hours5.787037e-5 days <br />0.00139 hours <br />8.267196e-6 weeks <br />1.9025e-6 months <br /> and is maintained for at least 4 hours4.62963e-5 days <br />0.00111 hours <br />6.613757e-6 weeks <br />1.522e-6 months <br />.
MILLSTONE - UNIT 3 3/4 6-36 Amendment No. f7 l
0044
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MILLSTONE - UNIT 3 3/4 6-36a Amendment No. f7 0038
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