Text

Proposed Tech Specs Showing Original & Unrelated Changes Re Removal of Main Steam Line Radiation Monitor Trips
	ML20046B556
Person / Time
Site:	Hatch
Issue date:	07/27/1993
From:	; GEORGIA POWER CO.
To:	;
Shared Package
ML20046B552	List: ML20046B551; ML20046B556;
References
	NUDOCS 9308050147
	Download: ML20046B556 (7)
	v • d • e

-

1 l'"DCW T4 q% Table 3.1-1 (Cont'd) 20 m Q3 %

j g Scram Number Source of Scram Trip Sicnol Operable Scram Trip Setting Source of Scram Signet is eo Channels ON z (a) Required Per Required to be Operable NQ Trip System (bl Except as Indicated Below 04

uW OO ON 12 Turbine Stop Velve 4 <10% velve closure Automatically bypassed when Trom full open

!hO g Closure Tech Spec 2.1.A.3.

turbine steem flow is below that corresponding to 30% of

Wfu rated thermal power as measured by turbine first

p;q stage pressure.

INid64 Notes for Table 3.1 1

e. The column entitled " Scram Number

is for convenience so that e one-to-one relationship can be established between items in Tebte 3.1-1 and items in Table 4.1-1.

." b.1. - There shall be two operable or tripped trip systems for each potential scram signal. If the number of y operable channels cannot be met for one of the trip systems, the inoperable channel (s) or the associated trip m system shall be tripped.

b.2. One instrument channel may be inoperable for up to 6 hours6.944444e-5 days 0.00167 hours 9.920635e-6 weeks 2.283e-6 months to perform required surveillances prior to entering other applicable actions, provided et least one operable channel in the some trip system is monitoring that parameter.

.r.e-K V

/

c+

(D O

3" vs V

/

~3"

/

(4 Re to C

w M

w W

7 O

/

w O-U1

'1i

~

x %tes for Table 3.2-1 3.40 .

m I

, e. The column entitled "Ref. No.* is only for convenience so that a one-to-one relationship can be established between lines in Table 3.2-1 end items in Table 4.2-1.

C *

2.:

.- b.1. Primary containment integrity shall be maintained at all times prior to withdrawing control rods for the

""4 purpose of going critical, when the reactor is critical, or when the reactor water temperature is above e-a 212'F and fuelis in the reactor vessel except while performing low-power physics tests at atmospheric pressure et power levels not to exceed 5 MWt, or performing en inservice vessel hydrostatic or leakage test.

When primary containment integrity is required, there shall be two operat>le or tripM trip systems for each function.

When performing inservice hydrostatic or leakage testing on the reactor vessel with the reactor coolant temperature above 212'F. reactor vessel water level instrumentation associated with the low low flevel 25 trip requires two operable or tripped channels. The drywell pressure trip is not required because primary containment integrity is not required, b.2. One instrument channel may be inoperable for up to 6 hours6.944444e-5 days 0.00167 hours 9.920635e-6 weeks 2.283e-6 months to perform required surveillances prior to entering other applicable actions.

c.1. With the number of operable channels less than required by the Minimum Operable Channels per Trip System requirement for one trip system, either ta y 1. place the inoperable channells)in the tripped condition' within 12 hours1.388889e-4 days 0.00333 hours 1.984127e-5 weeks 4.566e-6 months t

OR

2. take the action required by Table 3.2-1.

y *With a design providing only one channel per trip system, en inoperable channel need not be placed in the

- tripped condition where this would cause the Trip Function to occur in these cases, the inoperable I

V channel she81 be restored to operable status within 2 hours2.314815e-5 days 5.555556e-4 hours 3.306878e-6 weeks 7.61e-7 months or the action required by Table 3.2-1 for that Trip Function shell be taken.

p c+

o c.2. One instrument channel may be inoperable for up to 6 hours6.944444e-5 days 0.00167 hours 9.920635e-6 weeks 2.283e-6 months to perform required surveillances prior to entering h

qa other opplicable actions.

V d. The vetvas associated with each Group isolation are given in Table 3.7-1.

r Co e. Prior to the hydroger, injection system startup and with reactor power greater than 20% rated power, the normal full power radiation trip /elerm setpoints may be changed based on calculated M

p=

expected radiation levels during hydrogen injection system operation. Associated trip /alemi setpoints may be adjusted during injection based on either calculations or measurements of C actual radiation levels resulting from hydrogen injection. Following a reactor startup, a ta background radiation level will be determined and the associated trip /elarm setpoints adjusted n within a 72-hour period. The radiation level shall be determined and essociated trip / alarm s setpoints shall be set within 24 hours2.777778e-4 days 0.00667 hours 3.968254e-5 weeks 9.132e-6 months of re-establishing normal radiation levels after e 0, reduction in, or a completion of, hydrogen injection and prior to establishing reactor power

.-- levels below 20% of rated power.

00

f. The high differential flow signal to the RWCU isolation velves may be bypassed for up to 2 hours2.314815e-5 days 5.555556e-4 hours 3.306878e-6 weeks 7.61e-7 months during periods of system restoration. maintenance, or testing.

~

\

M Table 3.2-8 (cont.)

n .

l z Ref, instrument Trip Required Trip Setting Action to be taken if Remarks No. Condition Operable there are not two operable f a l (e) Nomencle- Channels or tripped trip systems I

z ture per Trip Q _

System (b)

~

l 5. Main Steam Une Hi 2 53 times isolate the mechanical One trip per trip l Radiation Monitor normal full vacuum pump and the logic eystem will power background gland seal condenser isolate the (e) exhauster mechanical vacuum l pump and the gland seal condenser exhauster.

a. The column entitled "Ref, No." is only for convenience so that a one-to-one relationship can be established between items in Table 3.2-8 and items in Table 4.2-8.

b.1, Whenever the systems are required to be or'erable, there shall be two operable or tripped trip systems.

If this cannot be met, the indicated action shall be taken.

W

. b.2. One instrument channel may be inoperable for up to 6 hours6.944444e-5 days 0.00167 hours 9.920635e-6 weeks 2.283e-6 months to perform required surveillances prior to entering 7

e-o other appliceble actions.

to

c. In the event that both off-ges post treatment radiation monitors become Inoperable, the reactor shall be placed in the Cold Shutdown within 24 hours2.777778e-4 days 0.00667 hours 3.968254e-5 weeks 9.132e-6 months unless one monitor is sooner made operable, or adequate attemative monitoring fecilities are avoitable.

x d. From and after the date that one of the two off-gas post treatment radiation monitors is made or found to

. be inoperable, continued reactor power operation is permissible during the next fourteen days (the at allowable repair time), provided that the inoperable monitor is tripped. I' r

/

@ e. Prior to the hydrogen injection system startup and with reactor power greater than 20% rated power, the normal full power radiation trip /aierm setpoints may be changed r1 based on calculated expected radiation levels during hydrogen injection system operation. Associated trip / alarm setpoints may be adjusted during injection based on

[ either calculations or measurements of actual radiation levels resulting from hydrogen injection. Following a reactor startup, a background radiatien level will be "O. determined and the associated trip / alarm setpoints adjusted within a 72-hour period. The radiation level shall be determined and associated trip / alarm setpoints shall be

'r

set within 24 hours2.777778e-4 days 0.00667 hours 3.968254e-5 weeks 9.132e-6 months of re-establishing normal radiation levels after a reduction in, or a completion of, hydrogen injection and prior to establishing reactor power levels do below 20% of rated power.

W ru 98 A

w W

"4 O

/

w D

U1

- - . _ _ _ - - _ _ ~ ~ _ . -__ ~ -. ._ .,, . -

TABLE 3.3.1-1 (Continued)

REACTOR PROTECTION SYSTEM INSTRUMENTATION ACTION 9 - In OPERATIONAL CONDITION 1 or 2, be in at least HOT SHUTDOWN ,

within 6 hours6.944444e-5 days 0.00167 hours 9.920635e-6 weeks 2.283e-6 months .

In OPERATIONAL CONDITION 3 or 4, lock the reactor mode switch ,

in the Shutdown position within I hour. :

i In OPERATIONAL CONDITION 5, suspend all operations involving i CORE ALTERATIONS or positive reactivity changes and fully insert all insertable control rods within 1 hour1.157407e-5 days 2.777778e-4 hours 1.653439e-6 weeks 3.805e-7 months . ,

TABLE NOTATIONS

a. Deleted.

b. The " shorting links" shall be removed from the RPS circuitry during CORE i ALTERATIONS and shutdown margin demonstrations performed in accordance with Specification 3.10.3. i

c. The IRM scrams are automatically bypassed when the reactor vessel mode switch is in the Run position and all APRM channels are OPERABLE and on 1 scale.

d. An APRM channel is inoperable if there are less than 2 LPRM inputs per ;

level or less than 11 LPRM inputs to an APRM channel. ,

e. These functions are not required to be OPERABLE when the reactor pressure vessel head is unbolted or removed. ,

b f. This function is automatically bypassed when the reactor mode switch is !

in other than the Run position.

g. This function is not required to be OPERABLE when PRIMARY CONTAINMENT INTEGRITY is not required.

h. With any control rod withdrawn. Not applicable to control rods removed !

per Specification 3.9.11.1 or 3.9.11.2. !

i. These functions are bypassed when turbine first stage pressure is $250*

psig, equivalent to THERMAL POWER less than 30% of RATED THERMAL POWER.

J. (Deleted) {

I l

1

Initial setpoint. Final setpoint to be determined during startup testing.

HATCH - UNIT 2 3/4 3-5 k:\wp\techsp\h\3_4U2T14. Pro \l25 I

l

TABLE 3.3.2-1 (Continued)

ISOLATION ACTUATION INSTRUMENTATION ACTION ACTION 20 - Be in at least HOT SHUTDOWN within 6 hours6.944444e-5 days 0.00167 hours 9.920635e-6 weeks 2.283e-6 months and in i.0Ud SHUTDOWN within the next 30 hours3.472222e-4 days 0.00833 hours 4.960317e-5 weeks 1.1415e-5 months .

ACTION 21 - Be in at least STARTUP with the main steam line isola *.?on valves closed within 2 hours2.314815e-5 days 5.555556e-4 hours 3.306878e-6 weeks 7.61e-7 months or be in at least HOT SHUTDOWN within 6 hours6.944444e-5 days 0.00167 hours 9.920635e-6 weeks 2.283e-6 months and in COLD SHUTDOWN within the next 30 hours3.472222e-4 days 0.00833 hours 4.960317e-5 weeks 1.1415e-5 months .

ACTION 22 - Be in at least STARTUP within 2 hours2.314815e-5 days 5.555556e-4 hours 3.306878e-6 weeks 7.61e-7 months .

ACTION 23 - Be in at least STARTUP with the Group 1 isolation valves closed within 2 hours2.314815e-5 days 5.555556e-4 hours 3.306878e-6 weeks 7.61e-7 months or in at least HOT SHUTDOWN within 6 hours6.944444e-5 days 0.00167 hours 9.920635e-6 weeks 2.283e-6 months .

ACTION 24 - Establish SECONDARY CONTAINMENT INTEGRITY with the standby gas treatment system operating within one hour.

ACTION 25 - Isolate the reactor water cleanup system.

ACTION 26 - Close the affected system isolation valves and declare the affected system inoperable.

ACTION 27 - Verify power availability to the bus at least once per 12 hours1.388889e-4 days 0.00333 hours 1.984127e-5 weeks 4.566e-6 months l' or close the affected system isolation valves and declare the affected system inoperable. l ACTION 28 - Close the shutdown cooling supply and reactor vessel head spray isolation valves unless reactor steam dome pressure s 145 psig. l ACTION 29 - Either close the affected isolation valves within 24 hours2.777778e-4 days 0.00667 hours 3.968254e-5 weeks 9.132e-6 months or be '

in H0T SHUTDOWN within the next 6 hours6.944444e-5 days 0.00167 hours 9.920635e-6 weeks 2.283e-6 months and in COLD SHUTDOWN within the next 30 hours3.472222e-4 days 0.00833 hours 4.960317e-5 weeks 1.1415e-5 months .

ACTION 30 - Trip and isolate the mechanical vacuum pump and isolate the ;

reactor water sample valves. '

NOTES .

Actuates the standby gas treatment system.

- When handling irradiated fuel in the secondary containment.

- - When performing inservice hydrostatic or leak testing with the reactor-coolant temperature above 212 F.

a. See Specification 3.6.3, Table 3.6.3-1 for valves in each valve group.

b. Deleted.

HATCH - UNIT 2 3/4 3-15 k:\wp\techsp\h\3_4U2T14. Pro \l25

B TABLE 3.3.6.7-1 (SHEET 2 0F 2)

MCRECS ACTUATION INSTRUMENTATION ACTION ACTION 52 - Take the ACTION required by Specification 3.3.3.

ACTION 53 - Take the ACTION required by Specification 3.3.2. j ACTION 54 -

a. With one of the required radiation monitors inoperable, restore the i monitor to OPERABLE status within 7 days or, within the next 6 hours6.944444e-5 days 0.00167 hours 9.920635e-6 weeks 2.283e-6 months , initiate and maintain operation of the MCRECS in the pressurization mode of operation. i

b. With no radiation monitors OPERABLE, within I hour initiate and maintain operation of the MCRECS in the pressurizat'.on mode of operation,

c. The provisions of Specification 3.0.4 are not applicable.

i NOTES

When handling irradiated fuel in secondary containment.

a. (Deleted) l

b. With a design providing only one channel per trip system, an inoperable channel need not be placed in the tripped condition where this would >

cause the Trip Function to occur. In these cases the inoperable channel shall be restored to OPERABLE status within 12 hours1.388889e-4 days 0.00333 hours 1.984127e-5 weeks 4.566e-6 months or the >

ACTION required by Table 3.3.6.7-1 for that Trip. Function shall be taken,

c. Actuates the MCRECS in the control room pressurization mode.

d. (Deleted) .

r

e. (Deleted) r l

HATCH - UNIT 2 3/4 3-58b techsp\h\90-07AU2\125 i

'1

% TABLE 4.3.6.7-1

-4 '

Q MCRECS ACTUATION INSTRUMENTATION SURVEILLANCE REQUIREMENTS

' CHANNEL OPERATIONAL c CHANNEL FUNCTIONAL CHANNEL CONDITIOiJS IN WHICH

$-4 TRIP FUNCTION CHECK TEST CALIBRATION SURVEfLLANCE REQUIRED y 1. Reactor Vessel Water Level - S Q R 1,2,3 Low Low Low (Level 1)

2. Drywell Pressure - High S Q R 1,2,3

3. (Deleted) l 4 Main Steam Line Flow - High S Q R 1,2,3

5. Refueling Roor Area Radiation - S Qi *' O' 1,2,3,5

High

6. Control Room Air inlet NA Q'*' R 1, 2, 3, 5,

Radiation - High w

N 4

w I

tn m

CL

When handling irradiated fuel in the secondary containment.

a. Instrument alignment using a standard current source.

r+

C

,s'

'O

/

3"

/

D O

e O

N c

N N

U1

_, _ . . _ , _ , ,

ML20046B556

Text

Navigation menu

Search