ML19332E835

Proposed Tech Specs Re Surveillance Requirements for Hydrogen Recombiners

ML19332E835
Person / Time
Site:	Millstone
Issue date:	12/01/1989
From:	NORTHEAST NUCLEAR ENERGY CO.
To:
Shared Package
ML19332E834	List: ML19332E833 ML19332E835
References
B13401, NUDOCS 8912130044
Download: ML19332E835 (4)

Text

m ,.

~

Ec ,

'~

s :

f I Docket No. 50-423 B13401 p..

Attachment 1 Millstone Nuclear Power Station, Unit No. 3 -j 1

n Proposed Revision to Technical Specifications Hydrogen Recombiner Surveillance Requirements i I

i

-l l

f i

i

)

l l

0 December 1989 8912130044 891201 hDR ADOCK 05000423PDC

g

.s

. X INDEX E*

LIMITING CONDITIONS FOR OPERATION AND SURVEILLANCE REQUIREMENTS SECTION MQ1 FIGURE 3.6-1 MAXIMUM ALLOWABLE PRIMARY CONTAINMENT AIR PARTIAL PRESSURE VERSUS SERVICE WATER TEMPERATURE......... 3/4 6-8 ,

Air. Temperature................................... 3/4 6-9 Containment Structural Integrity.................. 3/4 6-10

! Containment Ventilation 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 1

3/4.6.3 CONTAINMENT ISOLATION VALVES....................... 3/4 6-15 ]

3/4.6.4 COMBUSTIBLE GAS CONTROL Hydrogen Monitors.................................. 3/4 6-35 Electric Hydrogen Recombiners...................... 3/4 6-36 FIGURE 3.6-2 HYOR0 GEN RECOMBINER ACCEPTANCE CRITERIA FLOW VS.

CONTAINMENT PRESSURE............................... 3/46-36a 3/4.6.5 SUBATM0 SPHERIC PRESSURE CONTROL SYSTEM Steam Jet Air Ejector.............................. 3/4 6-37 L

l 3/4.6.6 SECONDARY CONTAINMENT o

Supplementary Leak Collection and Release System... 3/4 6-38 l

L 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 Safety Valves........................................... 3/4 7-1 TABLE 3.7-1 MAXIMUM ALLOWABLE POWER RANGE NEUTRON FLUX HIGH SETPOINT WITH INOPERABLE STEAM LINE SAFETY VALVES DURING FOUR LOOP 0PERATION......................... 3/4 7-2 TABLE 3.7-2 MAXIMUM ALLOWABLE POWER RANGE NEUTRON FLUX HIGH SETPOINT WITH INOPERABLE STEAM LINE SAFETY VALVES THREE LOOP 0PERATION.............................. 3/4 7-2 MILLSTONE - UNIT 3 ix Amendment No. 28

w ..

pT y-

%' s p .

b '

-CONTAINMENT SYSTEMS p ELECTRIC HYDROGEN RECOMBINERS LIMITING CONDITION FOR OPERATION 3.6.4.2 - Two independent Hydrogen Recombiner Systems shall be OPERABLE.

APPLICABILITY: 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 Recombiner <

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.),

L 3) Verifying the integrity of all heater electrical circuits by i 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 l 4) Verifying during a recombiner system functional test using con-l tainment atmospheric air at a flow rate of greater than or equal to that indicated on Figure 3.6-2, that the gas tempera-ture 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 />.

1 MILLSTONE - UNIT 3 3/4 6-36 I

w.

f. : ' '

!)' 'q-

-i-; -

'10 I'- Ji )

l 15-r 7 .

Y i  !

14 f

4

)

w 13 w

E UNACCEPTABLE

$e25 12 -

)

wb 3

z R

o

-o 13

/

ACCEPTABLE 10 ,

r 9--

o.

8 30 40 50 60 70 80 FLOW (scim)

FIGURE 3.6-2 HYDROGENRECOPEINER ACCEPTANCECRITERIA FLOW VS CONTAINMENT PRESSURE 3/4 6-36a MILLSTONE UNIT 3

-