ML051950430

Pbnp Shutdown Safety Assessment and Fire Condition Checklist

ML051950430
Person / Time
Site:	Point Beach
Issue date:	05/14/2004
From:	Leiker J Nuclear Management Co
To:	Office of Nuclear Reactor Regulation
References
FOIA/PA-2004-0282
Download: ML051950430 (3)

Text

Point Beach Nuclear Plant PBNP SHUTDOWN SAFETY ASSESSMENT AND FIRE CONDITION CHECKLIST Date: May 14, 2004 Time: 1400 Preparer: Jon Leiker U I R 28.

NOTE: Refer to baseprocedureNP 10.3.6for safety assessment checklist KSF definitions.

NOTE: Wheneverfuel has been removed from the reactorvessel and refueling cavity, all key safety fiunctions are GREEN except spentfuielpool cooling.

KEY SAFETY FUNCTION CRITERIA: No/False = 0, Yes/True = I through 4 REACTIVITY Subtotal Condition

1. RCS Boron concentration = 3008 ppm a.) For RSD, RCS boron >Refueling boron concentration specified in unit-specific COLR (TRM 2.1) >2200 ppm b.) For CSD and prior to RSD no fuel motion, RCS boron > boron concentration required by OP 3C (0-1) 1 0-1 RED

2. Number of boration paths (0-2) 2 2 ORANGE

3. No fuel motion (0-1) 1 3-4

4. SR instrumentation operable (0-1) 1 Subtotal = 5 CORE COOLING Subtotal Condition I. Number of SG available for DHR (0-2) 0 0-1 RED

2. Refueling cavity filled (0-1) 1 2 ORANGE

3. Number of trains RHR available (0-2) 2 3

4. RCS level above REDUCED INVENTORY (0-1) 1 G5 RCS Temperature = 81F; 41 days shutdown RCS Level = Rod Latch Height; Reactor Is refueled Subtotal = 4 RCS Time to Boil 30 hrs (Applicable at Cold or Refueling Shutdown)

POWER AVAILABILITY Subtotal Condition

1. Independent off-site power sources I RED available to A-05 and A-06 (totally 2 ORANGE independent at the 4160 V, 13.8 kV, and 345 kV levels) (0-2) 2 ()5

2. G-01 or G-02/A-05/B-03 available (0-1) 1 G-03 or G-04/A-06/B-04 available (0-1) 1

3. G-05 available, Reactor Cavity filled to Ž23 ft above the top of the reactor vessel flange, upper internals removed and RCS time to boil 2Ž12 hours1.388889e-4 days <br />0.00333 hours <br />1.984127e-5 weeks <br />4.566e-6 months <br />. (0-1) 0 Subtotal = 4 INVENTORY Subtotal Condition 0-l RED

1. Pressurizer level 220 percent w/head on (0-1) 0 2 ORANGE

2. Refueling Cavity filled (see definition) (0-3) 2 3

3. RCS level above REDUCED INVENTORY (0-1) 1 4 ()

4. Makeup from VCT/BLENDER and/or RNVST available (0-2) 2 Subtotal = 5 hewan inf rord wid ug Inaccordac wit Freedom Of klformsfon

References:

NP 10.3.6 PBF-1562 Revision 2 10/30/02 A, oxz 1 of 9 NP 10.2.1 20°w-i4_o --%

Point Beach Nuclear Plant PBNP SHUTDOWN SAFETY ASSESSMENT AND FIRE CONDITION CHECKLIST CONTAINMENT Subtotal Condition

1. Containment integrity (TS 15. 1.D) {Containment 0 RED Operable) (ITS TS 3.6.1) set (Oor4) 0

2. Containment Closure CL-IE maintained d]OW and closure < time to boil ( or 2) 2 4-5-6

3. No fuel motion (0-1) 1

4. DHR Capability:

- cavity flooded and internals out OR

- at least one SG available OR

- one fan cooler with Equip hatch installed and personnel hatches capable of being shut (0-1) 0 Subtotal = 3 SPENT FUEL POOL COOLING (ONLY APPLICABLE when starting AND during FULL CORE OFFLOADS)

NOTE: Take creditforonly one P-12 independent offsite power source duringperiods of single X-03 or X-04 availability (*).

Subtotal Condition

1. "A" SFP cooling pump available 0-1 RED with power available from: .2 ORANGE

- G-02 or G-01 via 2B-32 (0-1) NA 3 YELLOW

-(*) an independent off-site power 4-5 GREEN source different than that for Train B below (0-1) NA

2. "B" SFP cooling pump available with power available from:

- G-03 or G-04 via 1B-42 (0-1) NA

-(*) an independent off-site power source different than that for Train A above (0-1) NA

3. Temporary power available to one SFP cooling pump, G-05 available, and SFP time to boil 2 12 hours1.388889e-4 days <br />0.00333 hours <br />1.984127e-5 weeks <br />4.566e-6 months <br />. (0-1) NA SFP Temperatures: Subtotal = NA 0

NW NA F SE NA OF SFP Average Temp NA OF SFP Time to Boil NA GIVE A BRIEF EXPLANATION OF ANY CHANGE IN SAFETY ASSESSMENT THAT TOOK PLACE:

RWST level is being lowered in preparation for cavity drain down (will remain >40 % level).

Look-ahead: When Cavity is drained to below Rod Latch height, we will lose one point for Core Cooling (will go YELLOW) and two points for Inventory (will go YELLOW).

PBF-1562

References:

NP 10.3.6 Revision 2 10/30/02 Page 2 of 9 NP 10.2.1

Point Beach Nuclear Plant PBNP SHUTDOWN SAFETY ASSESSMENT AND FIRE CONDITION CHECKLIST OUTAGE SAFETY ASSESSMENT UNIT: I DATE: May 14, 2004 TIME: 1400 KEY SAFETY FUNCTIONS:

REACTIVITY: GREEN CORE COOLING: GREEN POWER AVAILABLE: GREEN INVENTORY: GREEN CONTAINMENT: YELLOW SFP COOLING: NA PROTECTED EQUIPMENT:

COMMENTS:

RCS Time to Boil is 30 hours3.472222e-4 days <br />0.00833 hours <br />4.960317e-5 weeks <br />1.1415e-5 months <br />. Using NP 10.3.6 Time To Boil curves.

Fire Protection Condition IV: Credit is taken for fire rounds as fire prevention contingency PBF- 1562

References:

NP 10.3.6 Revision 2 10/30/02 Page 5 of 9 NP 10.2.1