3.9 Refueling Operations

Question 1

3.9.1 Boron Concentration

Answer 1

Boron concentration of the Reactor Coolant System (RCS), the fuel
transfer canal, and the refueling cavity shall be maintained within the limit
specified in COLR.

APPLICABILITY: MODE 6.
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- NOTE -
Applicable to the fuel transfer canal and the refueling cavity only when
connected to the RCS.
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ACTIONS
A. Boron concentration not
within limit.
A.1 Suspend positive reactivity
additions.
Immediately
AND
A.2 Initiate actions to restore
boron concentration to
within limits.
Immediately

Question 2

3.9.2 Unborated Water Source Flow Paths

Answer 2

One valve in each unborated water source flow path shall be secured in
the closed position.

APPLICABILITY: MODE 6.

ACTIONS
- NOTE -
Separate condition entry is allowed for each unborated water source flow path.
--------------------------------
- NOTE -
Required Action A.2 must be completed whenever Condition A is entered.
--------------------------------
One or more unborated
water source flow paths
with no valve secured in
the closed position.
A.1 Initiate actions to secure
one valve in the flow path
in the closed position.
Immediately
AND
A.2 Perform SR 3.9.1.1. 
4 hours

Question 3

3.9.3 Nuclear Instrumentation (Source Range)

Answer 3

Two source range neutron flux monitors shall be OPERABLE.

APPLICABILITY: MODE 6.

ACTIONS
A. One required source
range neutron flux
monitor inoperable.
A.1 Suspend positive reactivity
additions.
Immediately
AND
A.2 Suspend operations that
would cause introduction
into the Reactor Coolant
System (RCS), coolant
with boron concentration
less than required to meet
the boron concentration of
LCO 3.9.1.
Immediately
B. Two required source
range neutron flux
monitors inoperable.
B.1 Initiate action to restore
one source range neutron
flux monitor to OPERABLE
status.
Immediately
AND
B.2 Perform SR 3.9.1.1. (Boron Conc.)
Once per 12 hours

Question 4

3.9.4 Refueling Cavity Water Level

Answer 4

Refueling Cavity Water Level shall be maintained ≥ 23 ft above the top of
the reactor vessel flange.

APPLICABILITY: During movement of irradiated fuel assemblies within containment.

ACTIONS
A. Refueling cavity water
level not within limit.
A.1 Suspend movement of
irradiated fuel assemblies
within containment.
Immediately

Question 5

3.9.5 Decay Time

Answer 5

The Reactor shall be subcritical for ≥ 48 hours.

APPLICABILITY: During movement of irradiated fuel in the reactor pressure vessel.

ACTIONS
A. Reactor subcritical < 48 hours.
A.1 Suspend all operations involving movement of irradiated fuel in the reactor pressure vessel.
Immediately