ML030800312
| ML030800312 | |
| Person / Time | |
|---|---|
| Site: | Point Beach  |
| Issue date: | 11/05/2002 |
| From: | Robbins R, Ruesch S Nuclear Management Co |
| To: | Office of Nuclear Reactor Regulation |
| References | |
| FOIA/PA-2003-0094 | |
| Download: ML030800312 (14) | |
Text
I NUCLEAR POWER BUSINESS UNIT Pace_ 1 of 3 OPERATIONS WRITTENt WORK ORDER WP No 2002 (To 3: -kgswd By OPS Ckrml)
Job/Task Description Work Plan to support Danger Tagging of T-24B North Condensate Storage Tank
[JASHAREDATA\OPS\WORKPLAJN\T-24B Danger tag support.docl Work Plan Oriinator L. Date 6'2- 2138 SRO Review 5 P LI6 i l Dat ',.
Work Plan and/or Description of Work to be Performed TEXT STEPI CAUTION: REVIEW CST TANK LEVEL REQUIREMENTS FOR UNIT OPERATION. FOR 2 UNIT OPERATION MAINTAIN > 15.0 FT OF INVENTORY IN THE ON LINE / IN-SERVICE CST. (SEE TLB-34)
~PROCEDU"~Pi I Verify the following AFW & HOTWELL makeup flowpath alignment is available:
AF-3 T-24A CST service outlet LOCKED OPEN AF-5 T-24A CST outlet to aux feedwater pumps LOCKED OPEN AF-2 T-24A CST recirc isolation LOCKED OPEN AF-4A T-24A CST inlet from water treatment OPEN AF-I AFP header recirc isolation LOCKED OPEN AF-6 T-24B CST OUTLET TO AUX FEEDWATER PUMPS - LOCKED OPEN 2 DECLARE CST T-24B OUT OF SERVICE * '
3 Hang Danger Tag Series - 0 CS T-24B Rev0-1 sequence 1 tags 4 SHUT AF-7A, T-24B CST inlet from water treatment to isolate the tank fill from water <
treatment.
____________________7
-:,ý) Iý
2 STEP TEXT MINT.
5 Notify chemistry to sample T-24B (north) CST for discharge permit, if necessary.
5A Uncap AF-14 and attach filter sock 5B Throttle open AF-14 to flush drain piping 5C Close AF-14 5D Remove filter sock and bag it. Label bag: "T-24B drain initial flush" and save bag.
5E Attach new filter sock to AF- 14 NOTE: DURING T-24B DRAINDOWN, MONITOR FILTER SOCK FOR PLUGGING. IF FILTER SOCK BEGINS TO PLUG, SECURE T-24B DRAINMDOWNV AND REPLACE FILTER SOCK.
BAG ALL FILTER SOCKS, LABEL THE BAG, AND SAVE IT. HAVE SEVERAL FILTER SOCKS AVAILABLE IN CASE THEY ARE NEEDED.
6 THROTTLE OPEN AF-14 to drain T-24B (north) CST through filter sock.
7 NOTIFY CHEMISTRY TO BEGIN SAMPLING OF CST AND RESAMPLE EVERY 2 FT AS LEVEL DECREASES.
8 After T-24B is drained, hang Danger Tag series 0 CS T-24B Rev0-1 sequence 2 tags. CIS THEN start T-24B tank inspection.
PBF-2049 Revision 2 05/08/98
3 RESTORATION ,-..(:Remove Danger'Tags/position ialves as listed)
CAUTION: VERIFY T-24A CST LEVEL 215 FT TO ENSURE TECH SPEC CST VOLUME REQUIREMENTS ARE MET FOR OPERATING EACH UNIT FROM A SINGLE CST, WHILE TRANSFERRING WATER BETWEEN CST'S.
CAUTION: THE FOLLOWING STEP WILL FILL T-24B FROM WATER TREATMENT STEP TEXT INIT.
9 AF-14 T-24B CST drain SHUT & CAPPED AF-6 T-24B CST outlet to AF pumps SHUT AF-7A T-24B CST inlet from water treatment OPEN AF-8 T-24B CST Service Outlet THROTTLED OPEN CAUTION: THE FOLLOWING STEP CROSSCONNECTS T-24A, SOUTH CST, TO T-24B, NORTH CST. MONITOR CST LEVELS AND MAINTAIN SUFFICIENT COMBINED CST VOLUME TO ENSURE TECH SPEC COMPLIANCE.
CAUTION: AF-6 AND AF-8 MUST BE 100% OPEN IN THE NEXT STEP TO ENSURE T-24B IS ALIGNED TO SUPPLY WATER TO AUX FEED SYSTEM AND U2 HOTWELL MAKEUP.
10 WHEN T-24A/B are approximately equal in level, continue with step 11 II AF-8 T-24B CST Service Outlet LOCKED OPEN _
12 AF-6 T-24B CST outlet to AF pumps LOCKED OPEN I 13 AF-9 T-24B CST mini recirc isolation LOCKED OPEN /
14 DECLARE CST T-24B RETURNED TO SERVICE Remarks:
Supervisor Initials Work Complete:
Date PBF-2049 Revision 2 05/08/98
CRIGINAL" PBNP WO No: 0213473
- UNIT 2
- Callup
- UTNIT 2
- Callup: OT Res= Group: OPI ********** HEADER PAGE ********** Need Date: 04/01/05 Equipment: O-RF-245 System: CS HP Zone:
Equip Nm: T-24B NORTH CONDENSATE STORAGE TANK INSPECTION Physical Location: OPS Freq: ZM2 Callup Type: PM Serial Number:
Callup
Description:
NORTH CONDENSATE STORAGE TANK INSPECTION - SEE :EXT.
Outage ID: U2R Activity:
Job Type: PREVENTIVE MAINTENANCE ACTIVITY Work Function: INSPECTION QA:
SR: N SEIS: 3 Operability Pre-Test: N Procedures:
N LCO: N EQ: N PMT: Operability Post-Test: N Procedures:
SSA: N CIV: N MRULE: N A/P: P CACC:
RRN: - Tech Spec Ref:
QA Codes: Sect XI Class:
Tools Needed:
Plant Conditions: REFUELING Ignition Control Permit: N Other Conditions: Transient Combustible Permit: N Fire Barrier Penetration Permit: N RWP: N IS 10 CFR 50.59 SCREENING NEEDED PER NP 10.3.1 YES NO IF YES ATTACH FORM PBF--151 Equipment Isolation Required:
ISO Tag Series #1:
06ST FME: Y ISO Tag #2: ISO Tag #3:
Operability Pre-Test Complete. Equip t *Sol'io Permission granted to perf Wo r-. 4 requested.
a Date:/t/4/s.r.
Ops DSS Notification Req: YýOps DSS Signat ti -Date:
Special Notification: /
Previous PM/ST Comments:
Number of Steps: 001 Acct #: - _ _
MFG Code: Tech Manual Cntl #:
- WORK ORDER CLOSEOUT
- Next Task Instructions:
Group Head Signature: Date: __/__/__
ORIGINAL *BNP WO No: 0213473001
- UNIT 2
- Callup
- UNIT 2
- Callup: OT Resp Group: OP6 ********** STEP DETAIL ******** Step Print: 11/01/02 Equipment: O-RF-245 System: CS Equipment Name: T-24B NORTH CONDENSATE STORAGE HP Zone:
Physical Location: OPS TANK INSPECTION Callup Type: PM Seauence No: 001 Short Desc: NORTH CONDENSATE STORAGE TANK Sched Start Date:
PLANNED: WORK PROCEDURES:
Crew: 6 6 NP 8.4.10 Shift: 6 6 RF-24S Class: 521 522 Work Plan
Description:
NORTH CONDENSATE STORAGE TANK INSPECTION - SEE TEXT.
WORK PERFORMED: --. ,1 e . f MTE:QAR :
ACTUAL USED: CREW: 12-*
SHIFT: k .)
NUMBERWORKER CLASS:
OF WORKERS: q2-c
?_ _
TOTAL HOURS: (04 TTL USED PATS EXPOSURE/STEP LIST ATTACHED: (MREM) : 16_ 4O _
WO TAGS REMOVED R CS N WORK COMPLETE DATE:
EMPLOYEE - - NUMBER:
- - .--.. . O . = - -"ORES
/ 0_
EMPLOYEE NAME:
- WORK COMPLETED
- Cause Failure Code:(P_// VC / NRM /
As Found-Out of Spec: Y /( / NA Machine History Review Required: Y Failed Component:
Corrective Action:
LINE SUPERVISOR: . Downtime: hrs 21Q_ TI 3I3IHI NAME: D-AE _* -,alo zr
..-- - ---- - - - - - -- .... . -DATE-- -- /
- EQUIPMENT RETURN TO SERVICE
- Operability Post Testing:
Operability NON OPS SUPV:Procs I Perrormed I NAME:
DSS: ---- I-I-I NAME:
DATE:
DATE: //
WO Priority: PBNP WO No: 0213473 4
- UNIT 2
- MWO
- UNIT 2
- Resp Group: OP6 ******** TEXT DETAIL ********** Step Print: 11/01/02 Equipment: O-RF-245 System: CS Equipment Name: T-24B NORTH CONDENSATE STORA3E TANK HP Zone:
Physical Location: OPS INSPECTION Discovery Date:
TEXT ID: WO-0213473 PAGE: 001 T-24B NOTE: CALLUP TO BE PERFORMED CST TANK INSPECTION EVERY 5 YEARS BEGINNING IN 1989.
- 1. ISOLATE AND DANGER TAG T-24B.
- 2. DRAIN REMAINING VOLUME OF TANK CONTENTS TO THE Ul TURBINE BUILDING SUMP.
- 3. ESTABLISH AN FME BOUNDARY AROUND THE TANK MANWAY AREA.
- 4. REMOVE THE TANK LOWER MANWAY.
- 5. CHECK FOR SAFE TANK ATMOSPHERE PER NP 1.9.4 "CONFINED SPACE PROCEDURE".
TEXT ID: WO-0213473 PAGE: 002
- 6. INSTALL BLOWER FORCED VENTILATION IF NECESSARY.
- 7. FOR EACH PERSON ENTERING TANK, ENSURE THAT A "FALL PROTECTION HARNESS" IS USED WITH A RETRIEVAL LINE ATTACHED.
- 8. UTILIZE GENERAL FME PRACTICES PER NP 8.4.10 "FOREIGN MATERIALS EXCLUSION PROCEDURE" .
- 9. REMOVE AND IDENTIFY ANY DEBRIS FOUND IN TANK.
- 10. WIPE UP BOTTOM OF TANK IF NECESSARY PER SYSTEM ENGINEER DIRECTION.
- 11. INSPECT TANK LINER FOR RUST/PITTING/POSSIBLE NEED FOR TANK REPAIRS.
- 12. INITIATE WORK ORDERS FOR ANY TANK REPAIRS THAT MAY BE NEEDED.
TEXT ID: WO-0213473 PAGE: 003
- 13. PERFORM VISUAL CLOSEOUT INSPECTION OF THE CST AFTER ALL WORK IN THE TANK IS COMPLETE.
- 14. INSTALL TANK MANWAY. SKILL OF THE CRAFT TIGHTENING IS SUFFICIENT FOR THE RUBBER GASKET. 50 FT/LBS IS THE MAXIMUM TORQUE VALUE.
- 15. DOCUMENT INSPECTION RESULTS IN THE WORK PERFORMED SECTION OF THE TASK SHEET.
- 16. REMOVE AND STORE FME BOUNDARY EQUIPMENT, VENTILATION BLOWER AND TOOLS.
- 17. REMOVE DANGER TAGS AND RESTORE TANK TO SERVICE AFTER ALL TANK WORK IS COMPLETE.
WO 0213473 T-24B CONDENSATE STORAGE TANK INSPECTION PLAN" Materials needed: Camera, Numerous sample bags or bottles with 1D tags, Pen to mark samples, tape measure, filter sock note pad to document dimensions and other findings.
Take pictures of tank, any debris or corrosion prior to disturbing or collecting samples.
Note initial findings in tank.
General inspection indicatedthe tank is in decent condition. There is a film on approx 2 of the tank floor. In comparison, this tank was cleaner than T-24A which was inspected on 11/04/02. There are numerous rust spots on the tank walls along the bottom of the tank. There are some small rust spots sporadicallylocated on the bottom of the tank.
There are also areasof corrosion on the tank ceilinz. No indicationofsevere de-oradationor debris accumulation in the tank. The manway cover hadsome loose paint and one piece approximately 2 inches in diameter was missing. Maintenancehas been instructedto remove all paint from the cover and Enzineeringhas obtained a sample of the paint chips. WO Tag 185984 was initiatedto repaintthe cover at a later date.
Inspect bottom of tank for loose debris. Note location of debris (map). Evaluate if debris is stuck in slime layer or loose. Collect and save if possible all loose debris so amount can be quantified. Distinguish and Separate neutrally buoyant from non-buoyant material.
See map for location of debris. There was no indication of any resin beads as identified in T-24A on 11/04/02. There were miscellaneous larzerpieces of materialscattered about the tank. All of the largerpieces were collected and placed in sample bags. The slime layer was really more of a dirt layer it was not so thick that it would hold or cause debris to stick. None of the material removed from the tank was buoyant.The material collected was brittle: it easily crumbled to the touch.
Inspect bottom of tank for ongoing corrosion/pitting and note locations. Evaluate whether corrosion is loose (Flaking) and can easily be removed. Obtain samples of any corrosion products which can be easily removed.
There are corrosion spots sporadicallyspread out on the bottom of the tank.The spots are V/"' to 1/2" diameter,they are not loose or flaking. The corrosionproductsare securely adhered.No samples were taken.
Note any film on the bottom of the tank and obtain sample.
There was a lieht film or dirt buildup on about halfthe bottom of the tank- A sample was taken in aplasticsample bottle.
Inspect the sides of the tank for corrosion. Determine if corrosion easily flakes off.
Obtain samples of corrosion only if it can be easily removed (no scraping or grinding),
using care to determine and save size of flakes. Note location of the corrosion above or below the suction pipe.
There are numerous spots on the tank wall mainly about 2" off the floor all aroundthe tank. Some of the spots are as hiWh as 6" up on the tank. There were a few sporadically located corrosionspots located above the level of the pump suction line. The corrosion spots ranged in size from % " to /2 ". There are rust stain marks going verticallv from the corrosionspots. The corrosion is tightly adheredno samples were taken.
Look for any paint/liner that is chipping. Determine if paint is loose and could be removed. Collect samples of any easily removable loose paint. Remove to keep samples in the size that would flake off. Note location of the loose paint, above or below suction pipe.
No loose or chipping paint was found on the floor or walls. The manway cover was previously discussed however, it should be noted that it the paint chipping on the manway appearsto be a coat of paint put over the originalpaint. The chipping of the paint is likely the resultof poor surface preparationpriorto installingthe new coat of paint.
Maintenancehas removed allpaint from the manway cover. Short term corrosion of the manway cover until it can be repaintedwill be insignificantdue to the chemical controls of the CST water.
Inspect down into the pump suction pipe if possible. Note any corrosion or debris in the suction pipe. Collect samples from suction pipe.
The suction pipe was inspectedto the pump suction isolation valve disc. There was no loose debris lying'in the suction pipe. The suction valve is flanged in. The weld from the tank to the flange is rustingall the way around. Tiny rust particles would come off in your hand if you rubbed the rust. The size and quantity availableto come off is consideredminor therefore, no sample was obtained.
Inspect all pipe nozzles, check for coating condition and corrosion. Obtain samples of any loose material.
The aux feed pump mini recircreturn nozzle had a rough rust texture with the entire nozzle rust colored. The rust wastightly adheredno samples taken. Some loose material was identifiedat the sample point / local level indicatornozzle. Obtaineda sample of this debris. The other nozzles only showed some ligzht rust stains.
Take pictures of pump suction line area where it enters the tank. Measure the deflector/anti-Vortex Baffle and any pertinent information to be used to determine the likelihood of drawing debris from the bottom of the tank.
There is no deflector or anti-vortexingdevice on the suction line. The suction pipe is flush with the inside of the tank wall. The pump suction line is approximately 8 inches
above the tank floor. The areasof largest debris/dirtaccumulationon the tank floor have been identified on the attachedsketch.
Insure a fresh sock is installed on the drainpipe.
A fresh sock was installed to collect materialfrom the bottom of the tank when it was cleaned. MTV rinsed and used squeegees to push bottoms to drain to be collected in sock.
Notify Maintenance to clean/flush the bottom of the tank to the drain.
Evaluate the results of the inspection.
The tank has numerous corrosionspots aroundthe lower tank wall below the suction pipe. There are also some corrosion spots sporadicallylocated on the floor and higher on tank walls and the ceiling. None of these spots appearsevere and there is no loose or flaking materialfrom these spots. The tank was found to have some debris in the bottom of the tank. The debris was not above what is expected to be normal for this type of tank.
The largestpieces were obtainedfor evaluation. There was no resin material identified in this tank The large debris was corrodedmaterialthat was brittle.Therefore, this materialwould not affect the ability of an Aux feed pump to perform its function. The condensatestorage tank has been cleaned of debris and can be returnedto service with no additionalaction taken.
All samples collected turnedover to Tom Kendal for analysis. This analysis is for what affect this could have on aux feed mini-recircorifice plugging. The inspection did not find a new potential failure mechanism of the aux feed system that was not addressedby OperabilityDetermination OPR 000031, CAP 029952 rev 1. The results of the tank inspection are bounded by the existingOperabilityDetermination. The condensate storage tank should be consideredfully operable.
John P. Schroeder 11/07/02
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Poant Beach Nuc!ea: ?.an:
PRE-JOB BRIEF CH-ECIKLI-ST JOBFEVOLUTION: _ .s(-c/r A.113 1AREASAVO= D?-15473 I DATE: A ATTENDEES 7,rBZiCErG RE-QUIRED D-AILY IF CHECKED Conducted By:
- I Use back ofsIheet ifnecessary REA'IEw / DISCUSS & CHECK OFF all .Dlicable I.terns Scope of Job Hazards
- Purpose, leader. :esources, tools, parts
- Personnel saferyvPPE
- Procedures, wo,'k orders, drawings, permits
- Plant ooeration, power generation, nuclear safety, trip MMaintenance Rule Status of the affected system avoidance
- Equipment
- Asbestos
- Lead paint Energy Sources Radiological Conditions
- Tag boundaries AL.A.RA Energized equ;oment, de-energized equipment, . RWP pressurized, d&-pressurized o Rad%%aste Considerations
- Protected Worker Log Communications Other
- Communication requirements
- Logistics support requirements Necessary notifications
- Foreizn Material Exclusion
- Housekeeping
- Security notification
- PBNP/Industr' event Lessons learned Special Precautions -' Key Error Traps 4
Industry and in-house operating experience, as applicable
"* First time evolution Critical steps
"* Disrmctive or poor environment Error-likely-situations, as applicable
"* Inadequate mental/physical state Defenses-barriers
"* Time pressure
"* Imprecise communication Independent verifications and concurrent checks f -- Termination criteria-recovery, as applicable Key Barriers Job briefings Procedure use Administrative program use Turnover meetings Supervisory presence S Review verification Co-worker coaching Self improvement I STOP - THINK - A CT- REVIEW PBF-9217 Refe.enc-. NP 1.6.10 Revision 1 01117/01
Point Beach Nuclear Plant FME CHECKLIST I. WORK ORDER!PROCEDURE!EVOLUTION: 0 213 Y .. - £S Not II. ADMINISTRATIVE CONTROL EXEMPTIONS: Yes/ No (If any are answered "YES," General requirements continue in effect and Section IV INSPECTIONS are still required.)
- 1. Piping/Cortduit 2" Diameter or Less (nominal) or System Opening Less Than 4 Square Inches (approximate). See Note 1. 0o
- 2. System Opening Less Than or Equal to 4 Inches in Diameter (i.e. waterbox drain)
Between 4 O'clock and 8 O'clock (pointing down). /0
- 3. Maintenance Activity Involving Compression/Threaded Fittings. o
- 4. Maintenance/Operations Pump/Valve Repacking. See Note 1.
- 6
- 5. Maintenance/Operation Oil Changes, Oil Sampling, or Repacking of Grease in Components Using Factory "I/V 0
- 6. FME Zon en. Rer (circle one)
Recor x1ended By (Planner): (. K, A Date: O/ Z.
Concurred By (Cognizant Supervisor): 6... Date: c///
-2..
III. ADMINISTRATIVE REQUIREMENTS: (Initial those that apply)
Sm............!'~ii1
.. . e...n d . M.... ZONE 1 ZONE 2
- 1. Boundaries (Required for all Zone 1 FMEAs) Required NOT Require
- 2. Signs (Required for all FMEA Zone 1 & 2) Required Required
- 3. Pipe Dams Required (Record On FME Material Control Log)
- 4. FME Material Control Log (PBF-9157) *Required
- 5. Chemical Exclusion Zone (See Dry Fuel Requirements) _._
NOT required when Temporary Covers or internal barriers are in place. COMPLETED OwCa(Initial/Date)i
- 6. Administrative requirements implemented (Supervisor/Leadperson). I IV. INSPECTION REQUIRED:
- 1. Pre-System Opening Area Inspection/Cleanup Required.
- I/1o*
- 2. Final Closeout Inspection. /// F'/ Z Complete/Reviewed By Date:
(Supervisor/Leadperson): 1'e*. / F Note 1: Continuously attend system/component when open, or cover when NOT attended.
(
Reference:
NP 8.4.10)
PBF-9158 Revision 6 09/06/01 CPage I of I
Point Beach Nuclear Plant 10 CFR 50.59/72.48 PRE-SCREENING REVIEW Page _._ of Brief Activity Title or
Description:
CCA ,(..4. -~ (f(l43-~ .~
This form is required to be completed and attached to the applicable activity change forms (i.e., PBF-0026a/c, etc.) to document use of Pre-screening Criterion 3 through 6 for 10 CFR 50.59 /
72.48 review of proposed changes (see NP 5.1.8, 10 CFR 50.59/72.48 Applicability, Screening and Evaluation (New Rule)
Section 4.6 and Attachment A.)
Pre-screening Criterion 3 - Activity Covered by Existing 10 CFR 50.59
/72.48 Screening or Evaluation Criterion 3 is [ ot Applicable to the proposed activity.
Identify the screening or evaluation number(s) (SE for old 50.59/72.48 rule evaluations, EVAL for new rule evaluations):
SCR I SE / EVAL #(s): SPEED # (NP 9.3.3, Rev. 3 or later ONLY):
If applicable, briefly summarize the parts of the proposed activity that are covered by Pre-screening Criterion 3.
Pre-screening Criterion 4 - Activity Covered by Existing Approved and Valid Plant Procedure Criterion 4 is E'ot Applicable to the proposed activity.
Identify the applicable plant procedure.
Procedure number, revision and tide:
If applicable, briefly summarize the parts of the proposed activity that are covered by Pre-screening Criterion 4.
Pre-screening Criterion 5 - NRC has Reviewed and Approved the Activity.
Criterion 5 is E1*'ot Applicable to the proposed activity.
Identify the NRC Safety Evaluation Report Number and/or Date.
NRC SER(s) # or Date(s):
If applicable, briefly summarize the parts of the proposed activity that are covered by Pre-screening Criterion 5.
Pre-screening Criterion 6 - Maintenance Activity (NOTE: Dry cask or ISFSI facility maintenance CANNOT use this criterion. A screening is required for dry cask or ISFSI facility maintenance.)
Criterion 6 is El Not Applicable to the proposed activity.
If/aplicable, briefly summarize the parts of the ro sed activity that are ,vered by Pre-screening Criterion 6.
ITZppli VERIFY THAT NONE OF THE FOLLOWING CHANGES ARE PRE-SCREENED TO CRITERION 6: Verified No changes to structure, system or component design, performance, acceptance criteria, types of materials, torque values outside of vendor recommended values, etc. (NOTE: Use Criterion 3 for SPEEDs.)
No temporary alterations to support maintenance or modification installation will be in place longer than 90 days. (If there is any doubt whether the temporary alteration will be removed in 90 days, perform a screening.)
No changes in acceptance criteria in technical specification surveillance or post-maintenance test procedures.
PBF-.SISb Revision I 04/03/02 Reference- NP 5.1.8
Point Beach Nuclear Plant 10 CFR 50.59172.48 PRE-SCREENING REVIEW Pagen of a.
10 CFR 50.59/72.48 PRE-SCREENING REVIEW CONCLUSION Preparer and Reviewer sigatures below signify that the portions of the proposed activity as described above are within the scope of Prescreening Criteria 3, 4, 5, or 6 of NP 5.1.8.
EITHER preparer OR reviewer shall be 50.59/72.48 screening or evaluat&i qualified.
Performed By Date 1 3/op Name (Print) Signature Name (Print) Signature rbF-1515o Revision I O4/0302_
Reference. NP 5.1 8