ML052030131

Pbnp Shutdown Safety Assessment and Fire Condition Checklist

ML052030131
Person / Time
Site:	Point Beach
Issue date:	05/26/2004
From:	Branam T Nuclear Management Co
To:	Office of Nuclear Reactor Regulation
References
FOIA/PA-2004-0282
Download: ML052030131 (3)

Text

Point Beach Nuclear Plant PBNP SHUTDOWN SAFETY ASSESSMENT AND FIRE CONDITION CHECKLIST 3--W Date: MI-av 26. 2004 Time: 0200 Preparer: T. R. Biranam U 1 R 28 NOTE: Refer to base procedure NP 10.3.6 for safety assessment checklist KSF definitions.

NOTE: Whenever fiel has been removedfrom the reactor vessel an refueling cavity, all key safety functions are GREEN except sp ent fuel pool cooling.

KEY SAFETY FUNCTION CRITERIA: No/False =0, Yes/lTrue 1 through 4 REACTIVITY Subtotal Condition

1. RCS Boron concentration = 3015 ppm a.) For RSD, RCS boron >Refueling boron concentration specified in unit-specific CQLR (TRM 2. 1) >22 00 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-I1) I 3-4

4. SR instrumentation operable (0-1) I 5 Subtotal = 5 CORE COOLING Subtotal Condition

1. Number of SG available for DHR (0-2) 0 0-1 RED

2. Refueling cavity filled (0-1) 0 2 A61Q

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

4. RCS level above REDUCED INVENTORY (0-1) 1 4-5 RCS Temperature = 94F; 53 days shutdown RCS Level > 55 % Subtotal = 3 RCS Time to Boil 106 min. (Applicable at Cold or Refueling Shutdown) rOWETR AVAILABILITY Subtotal Condition I1. Independent off-site power sources I RED available to A-O5 and A-06 (totally 2 ORANGE independent at the 4160 V, 13.8 kV, 3 and 345 kV levels) (0-2) 2 4-5

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 Ž 23 ft above the top of the reactor vessel flange, upper internals removed and RCS time to boil Ž: 12 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-I RED I. Pressurizer level Ž'20 percent w/head on (0-1) 0 2

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

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

4. Makeup from VCT/BLENDER and/or RWST available (0-2) 2 Subtotal = 3 Iftrmabo n1Athis recod was deWe~ AI Y"

inacordance vWth the Freedom of Informa~Of PBF-I 562 Actxen

References:

NP 10.3.6 Revision 2 10/30/02  ?,- PgeIo NP 10.2.1

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 (O or 4) 0 1 ORANGE

2. Containment Closure CL-IE maintained 2-3 and closure < time to boil (Oor 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) 1 Subtotal = 4 SPENT FUEL POOL COOLING (ONLY APPLICABLE when starting AND during FULL CORE OFFLOADS)

NOTE: Take creditfor only one P-12 independentoffsitepowersourceduring periods of single X-03 orX-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 NW NA OF 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:

• Core Cooling to YELLOW due to RCS level > 55 %

• Inventory to YELLOW due to RCS level > 55 %

• Changed Inventory path from Blender to "A" Train of SI due to need to recirc "A" BAST.

• TTB is 106 min - calculated from SEP- I with vessel level at X pipe, 94 0F, 53 days post shutdown, and the 1.3 multiplier for being refueled. Note that TTB curve curve based on 50 days post shutdown was conservatively used (CAP056964).

PBF-1562

References:

NP 10.3.6 Revision 2 10/30/02 Parer2 of 9 NP 10.2.1

Point Beach Nuclear Plant PBNP SHUTDOWNN SAFETY ASSESSMENT AND FIRE CONDITION CHECKLIST OUTAGE SAFETY ASSESSMENT UNIT: 1 DATE: May 26, 2004 TIME: 0200 KEY SAFETY FUNCTIONS:

REACTIVITY: GREEN CORE COOLING: YELLOW PO'WER AVAILABLE: GREEN INVENTORY: YELLOW CONTAINMENT: GREEN SFP COOLING: NA PROTECTED EQUIPMENT:

)

COMMENTS:

I

• RCS Time to Boil is 106 minutes.

• Fire Protection Condition lII: Credit is taken for rire rounds as fire prevention contingency.

PBF-1562

References:

NP 10.3.6 Revision 2 10/30102 Page 5 of 9 NP 10.2.1