ML19317G911

Model Tech Spec Tables 3.3,3.3-4 & 4.3-2 Re Engineered Safety Feature Actuation Sys Instrumentation & Section 4.8.1 Concerning Surveillance Requirements of Electrical Power Sys

ML19317G911
Person / Time
Site:	Rancho Seco
Issue date:	06/03/1977
From:	NRC COMMISSION (OCM)
To:
Shared Package
ML19317G899	List: ML19317G898 ML19317G902 ML19317G911
References
TAC-10968, TAC-63030, NUDOCS 8004020568
Download: ML19317G911 (5)

Text

.

TABLE 3.3-3 (Continued)

ENGiriElltLD SAFETY IEAIURE ACTUATION SYSTEM lilSTRUMfNTATIOrt MINIMUM ll '

TOTAL ti0.

CilANfiELS CilANNELS APPLICABLE FUNCTI0t1AL UtilT OF CilANNELS TO TRIP OPERABLE OPERATING MODES ** ACT 10f1 ***

LOSS OF POWER a.

4.16 kv Emergency Bus Undervoltage (Loss of Voltage) 4(3)/ Bus 2/ Bus 3(2)/ Bus 1, 2, 3 -

A or B x8 P

b.

4.16 kv Emergency Bus E

Undervoltage (Degraded Vol tage) 4(3)/ Bus 2/ Bus 3(2)/ Bus 1, 2, 3 A or B 5

9 9

E M

R M

~nR oo:o s

m

.O b

O

• (Entries in parenthesis are applicable for M

2 out of 3 coincidence logic) e Q'

• • Required when ESF equipment is required to be operable Op

• • • Action A for 2 out of 4 logic Action B for 2 out of 3 logic

I, I

--_____________-__________-_____:__;_,~ _

/

a

- j o

.::T" iL

, TABLE 3.3-3 (Continued)

-s ACTION STATEMENTS ACTION A

- With the number of OPERABLE channels one less than the

==-

Total Number of Channels operation may proceed provided both of the following conditions are satisfied:

a.

The inoperable channel is placed in the tripped condition within one hour.

b.

The Minimum Channels OPERABLE requirement is e

met; however, one additional channel may be l-bypassed for up to 2 hours2.314815e-5 days <br />5.555556e-4 hours <br />3.306878e-6 weeks <br />7.61e-7 months <br /> for surveillance testing per Specification (4.3.2.1.1).

ACTION B

- With the number of OPERABLE Channels one less than the Total Number of Channels operation may proceed until performance of the next required CHANNEL FUNCTIONAL

~.

TEST provided the inoperable channel is placed in the tripped condition withir I hour.

w a e mee 9

l. -

.!~

TABLE 3.3-4 (Continued)

ENGINEERED SAFETY FEATURE ACTUATION SYSTEM INSTRUMENTATION TRIP VALUES i

ALLOWABLE FUNCTIONAL UNIT TRIP VALUE VALUES q

LOSS OF POWER

+

( +

) volts with a a.

4.16 kv Emergency Bus Undervoltage

( [ ) volts with a

) second time delay

( [ ) second time delay (Loss of Voltage)

(

+

(

b.

4.16 kv Emergency Bus Undervoltage

( [ ) volts with a.

[-)voltswitha

+

) second time delay

(

(Degraded Voltage)

(

) second time delay

.i -

i-1

• • f"

..g.'

N

!! !nj::

' n., j

!!I!i

!Ij..

a h. ' n. [. ! ! j :. !

.'o..

i

H.,

i:

"E ny.

__________._o_;

TABLE 4.3-2 (Continued)

ENGINEERED SAFETY FEATURE ACTUATION SYSTEM INSTRUMENTATION SURVEILLANCE REQUIREMENTS OPERATING CilANNEL MODES IN WHICH CilANNfl.

CilANNEL FUNCTIONAL SURVEILLANCE IUNCTIONAL UNIT Clll CK CALIBRATION TEST REQUIRED

.c LOSS OF POWER q

a.

4.16 kv Emergency' Bus Undervoltage (Loss of Voltage)

S R

M 1,2,3 b.

.4.16 kv Emergency Bus Undervoltage (Degrcded 1

Voltage)

S R

M 1,2,3 S = at least once per 12 hoeirs R = at least once per 18 months P = at least once per 31 days lid:

4

4. +1 ELECTRICAL POWER SYSTEMS SURVEILLANCE REQUIREMENTS 4

"-J 4.8.1.1.X Each diesel generator shall be demonstrated OPERABLE:

a.

At least once per 18 months during shutdown by:

1.

Simulating a loss of offsite power in conjunction with.

a safety injection actuation test signal, and:

a) Verifying de-energization of the emergency busses and locd shedding from the emergency busses.

b) Verifying the diesel starts from ambient condition on the auto-start signal, energizes the emergency busses with permanently connected loads, energizes the auto-connected emergency loads through the load sequencer and operates for > 5 minutes while its generator is loaded with the emergency loads.

c) Verifying that on diesel generator trip, the loads are shed from the emergency busses and the diesel re-starts on the auto-start signal, the emergency busses are energized with permanently connected loads, the auto-connected emergency loads are energized through the load sequencer and the diesel operates for > 5 minutes while its generator is loaded with the emergency loads.

. - - -. _ -