Proposed TS Requirements 3.9.1.1 & 3.9.2.2 Re Frequency on Refueling Equipment & one-rod-out InterlocksML20137S776 |
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Perry |
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Issue date: |
04/09/1997 |
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CENTERIOR ENERGY |
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Shared Package |
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ML20137S760 |
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NUDOCS 9704150241 |
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Operation 1999-09-09
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I ,. , Attachment 3 I PY-CEI/NRR-2155L Page 1 of 2 ,
j
' 1 Refueling Equipment Interlocks i 3.9.1 P
3.9 REFUELING OPERATIONS l
3.9.1 Refueling Equipment Interlocks ,
LCO 3.9.1 The refueling equipment interlocks shall be OPERABLE. l APPLICABILITY: During in-vessel fuel movement with equipment associated with the interlocks.
]
l ACTIONS i CONDITION REQUIRED ACTION COMPLETION TIME l
A. One or more required A.1 Suspend in-vessel . Immediately refueling equipment fuel movement with interlocks inoperable. equipment associated !
with the inoperable interlock (s).
SURVEILLANCE REQUIREMENTS SURVEILLANCE FREQUENCY SR 3.9.l.1 Perform CHANNEL FUNCTIONAL TEST on each of 7 ays the following required refueling equipment interlock inputs:
- a. All-rods-in, M
- b. Refuel platform position, and
- c. Refuel platform main hoist, fuel loaded. !
97o4150241 970409 0; PDR ADOCK 0500 PERRY - UNIT 1 3.9-1 Amendment No.
1
- ~
, , Attachm nt 3 PY-CEUNRR-2155L i Pige 2 of2 l
Refuel Position One-Rod-Out Interlock l 3.9.2 :
SURVEILLANCE REQUIREMENTS (continued) ,
SURVEILLANCE FREQUENCY !
SR 3.9.2.2 -------------------NOTE--------------------
1 Not required to be performed until I hour j after any control rod is withdrawn. -
Perform CHANNEL FUNCTIONAL TEST. I ays b
PERRY - UNIT 1 3.9-3 Amendment No. fdf
, Attachment 4 PY-CEl/NRR-2155L Page 1 of 2 i
. . I Refueling Equipment Interlocks B 3.9.1 BASES (continued) 1
- APPLICABILITY
~
In MODE 5. a prompt reactivity excursion could cause fuel damage and su) sequent release of radioactive material to the environment. The refueling equipment interlockr protect against )rompt reactivity excursions during MODE 5. ,
The ;
interloccs are only required to be OPERABLE during in-vessel i
fuel movement with refueling equipment associated with the ;
l interlocks. t i
I In MODES 1. 2. 3. and 4. the reactor pressure vessel head is installed, and no fuel loading activities are possible, !
j Therefore, the refueling equipment interlocks are not required to be OPERABLE in these MODES.
j ACTIONS A.1 With one or more of the required refueling equipment interlocks ino)erable. the unit must be placed in a condition in w11ch the LC0 does not apply. In-vessel fuel movement with the affected refueling equipment must be immediately suspended. This action ensures that operations are not performed with equipment that would potentially not be blocked from unacceptable operations (e.g. loading fuel 3
into a cell with a control rod withdrawn). Suspension of i 4
in-vessel fuel movement shall not preclude completion of )
movement of a component'to a safe position. l SURVEILLANCE SR 3.9.1.1 REQUIREMENTS Performance of a CHANNEL FUNCTIONAL TEST demonstrates each required refueling equipment interlock will function i proper 1" when a simulated or actual signal indicative of a '
recuired condition is injected into the logic. The CHANNEL FUhCTIONAL TEST may be performed by any series of sequential, overlapping or total channel steps so that the entire channel is tested.
H The day Frequency is based on engineering judgment and is considered adequate in view of other indications of l-refueling equipment interlocks and their associated input status that are available to unit operations personnel.
(continued)
PERRY - UNIT 1 B 3.9-3 Revision No.
.s -
- Attachment 4 PY-CEI/NRR-2155L Page 2 of 2 l
Refuel Position One-Rod-Out Interlock l B 3.9.2 ]
BASES ACTIONS A.1 and A.2 (continued) .
fuel assemblies. Action must continue until all such control rods are fully inserted. Control rods in core cells i containing no fuel assemblies do not affect the reactivity of the core and, therefore, do not have to be inserted.
SURVEILLANCE SR 3.9.2.1 !
REQUIREMENTS !
Proper functioning of the refuel position one-rod-out !
interlock requires the reactor mode switch to be in refuel.
During control rod withdrawal in MODE 5. improper positioning of the reactor mode switch could, in some instances, allow improper bypassing of recuired interlocks.
Therefore, this Surveillance imposes an acditional level of assurance that the refuel position one-rod-out interlock will be OPERABLE when required. By " locking" the reactor mode switch in the proper position (i.e., removing the reactor mode switch key from the console while the reactor mode switch is positioned in refuel), an additional administrative control is in place to preclude operator errors from resulting in unanalyzed operation.
The Frequency o' 12 hours1.388889e-4 days <br />0.00333 hours <br />1.984127e-5 weeks <br />4.566e-6 months <br /> is sufficient in view of other administrative controls utilized during refueling operations to ensure safe operation.
SR 3.9.2.2 Performance of a CHANNEL FUNCTIONAL TEST on each channel ;
demonstrates the associated refuel position one-rod-out I interlock will function properly when a simulated or actual signal indicative of a required condition is injected into the logic. The CHANNEL FUNCTIONAL TEST may be performed by any series of sequential, overlapping, or total ;
steps so that the entire channel is tested. The ay Frequency is considered adequate because of demon rated circuit reliability, procedural controls on control rod withdrawals, and indications available in the control room to alert the operator of control rods not fully inserted.
To perform the required testing. the applicable condition must be entered (i.e. a control rod must be withdrawn from its full-in position). Therefore, this SR has been modified (continued)
PERRY - UNIT 1 B 3.9-7 Revision No
,