ML102000441

Radiation Work Permit, Facility Oyster Creek

ML102000441
Person / Time
Site:	Oyster Creek
Issue date:	04/21/2009
From:	- No Known Affiliation
To:	Office of Information Services
References
FOIA/PA-2009-0214
Download: ML102000441 (8)

Text

M RADIATION WORK PERMIT ACILITY: OC I YEAR: 09 RWP NUMBER: 00068 REVISION: 00 TYPE: SPC OCATION: COND23 CBA ELEVATION: ROOM: AREA:

ITLE:- CST UNDERGROUND PIPING WELD AND HOT TAP NITIATED: 04/21/09 SCHEDULED START: 04/25/09 EXPECTED COMPLETE: 01/01/10 ALARA CATEGORY : 0 PROTECTIVE CLOTHING AND RESPIRATORY PROTECTION REQUIREMENTS DOSIMETRY REQUIREMENTS

XTREMITY - HANDS

MULTIPLE DOSIMETRY:

'XTREMITY - FEET  : RELOCATE DOSIMETRY: ION CHAMBER  :

ADMINISTRATIVE / EXPOSURE CONTROL REQUIREMENTS IINIMUM TEDE BALANCE OF 2 00 MREM REQUIRED FOR ENTRY IRE-JOB MEETING REQUIRED  : Y AUTO ENTRY/EXIT PERMITTED : Y JORK ORDER NUMBER REQUIRED: N SIGNATURE CHECK AT SIGN-IN: Y HEALTH PHYSICS COVERAGE AND MONITORING PERIOD 3URVEY FREQ: 1 ROUTINE SURVE REQD-IF: BREACH OF SYSTEM IP COVERAGE: INTERMITTENT SPECIAL INSTRUCTIONS / REMARKS MICRO ALARA PLAN#09-068-ALL PERSONNEL TO READ AND COMPLY WITH M.A.P.

• DOCUMENT BRIEFING ON PROC. RP-AA-401 (ATT.4).

• KNOWLEDGE OF RAD CONDITIONS REQ'D PRIOR TO ENTRY TO RCA W/OUT RPT ESCORT.

• PERSONNEL MONITORING PER RP.

• SURVEY REQUIRED AT SYSTEM OPENING.

• AIR SAMPLING PER MICRO ALARA PLAN #09-068.

• WORKERS SHALL WEAR DOSIMETRY SO THEIR EXPOSURE CAN BE MONITORED IN ANY RCA.

• PC REQUIREMENTS PER RADIOLOGICAL POSTINGS OR PER RP

• ERECT A TENT OR SIMILAR ENCLOSURE AT CUTTING LOCATION PER THE MICRO ALARA PLAN #09-068.

• HEPA UNIT REQUIRED TO CREATE A NEGATIVE PRESSURE INSIDE OF THE TENT. PER MICRO ALARA PLAN #06-068.

(SPECIAL INSTRUCTIONS ARE CONT PAGE) 1U 0 APPROVALS / TERMINATION Name Date Signatures PREPARED BY FIONA M.ROBERTS 04/21/09 qORK SUPERVISOR: RABY, J 04/21/09 iP SUPERVISOR  : HEFFNER, ROBERT 04/21/09 PERMINATED BY  :

POST JOB REVIEW:

RADIATION WORK PERMIT FACILITY: OC I YEAR: 09 RWP NUMBER: 00068 REVISION: 00 TYPE: SPC LOCATION: COND23 CBA ELEVATION: ROOM: AREA:

rITLE: CST UNDERGROUND PIPING WELD AND HOT TAP SPECIAL INSTRUCTIONS,/ REMARKS

• OE- AR#674916 CONTAMINATION FOUND OUTSIDE CONTAMINATION AREA, BUT IN RCA TASK NBR DESCRIPTION 104 HP - JOB COVERAGE

• • • END OF WORK PERMIT REPORT ***

• • PROD REGION** RADIATION WORK PERMIT ITLE: CST UNDERGROUND PIPING WELD AND HOT TAP IIIIIIIIillillili I111III11111 HI lll OC-1-09-068MAP09-068 0C1090006800 PRE-JOB MTG REQD: YES HP COVERAGE CODE: INTERMITTENT ALARMING DOSIMETER: ED SET POINT: 0040 MREM OR 0080 MREM/HR SPECIAL INSTRUCTIONS / REMARKS MICRO ALARA PLAN#09-068-ALL PERSONNEL TO READ AND COMPLY WITH M.A.P.

• DOCUMENT BRIEFING ON PROC. RP-AA-401 (ATT.4).

• KNOWLEDGE OF RAD CONDITIONS REQ'D PRIOR TO ENTRY TO RCA W/OUT RPT ESCORT.

• PERSONNEL MONITORING PER RP.

• SURVEY REQUIRED AT SYSTEM OPENING.

• AIR SAMPLING PER MICRO ALARA PLAN #09-068.

• WORKERS SHALL WEAR DOSIMETRY SO THEIR EXPOSURE CAN BE MONITORED IN ANY RCA.

• PC REQUIREMENTS PER RADIOLOGICAL POSTINGS OR PER RP.

• ERECT A TENT OR SIMILAR ENCLOSURE AT CUTTING LOCATION PER THE MICRO ALARA PLAN #09-068.

• HEPA UNIT REQUIRED TO CREATE A NEGATIVE PRESSURE INSIDE OF THE TENT. PER MICRO ALARA PLAN #06-068.

• OE- AR#674916 CONTAMINATION FOUND OUTSIDE CONTAMINATION AREA, BUT IN RCA

RP-AA-401 Revision 9 ATTACHMENT 9 Micro ALARA Plan (MAP) Work Sheet MAP 08-068 RWP Number: OC-1-0 9- MAP Number: 09-068 WO Number: C2021075 068 Job

Description:

CST Uinderground Piping Weld and Hot Tap OriginalEstimates:

-Exposure: 2 Millirem Time: 43 person-hours IMAP Estimates:,

Exposure: 2 Millirem Time: 43 person-hours Exposure Challenqe Goal: 1 Millirem Note: MAP Estimates at or above 1000 millirem (1X0 rem) require formal ALARA Plan documentation.

Review Work Scope, utilizing job site walkdowns and craft input meetings as necessary, to evaluate the following Micro ALARA Planning controls and concepts:

MAP Concept/ Control Yes No N/A MAP Concept/ Control Yes No N/A Minimize Crew Size X rF 17 Modify System Configuration F E X Utilize Low Dose Area FE X Use Mock-up Training E XE Use Experienced Craft X F F Re-Sequence / Schedule r 1 X System Flushing F_ X 1 Improve Physical Work Area E X F Hydrolasing F. r X Remove Component to LDA F 1 X Shielding Installation F F X Use HEPA Ventilation X F Remote Monitoring IF 1 X Develop High Rad Trash Plan r X r Remote Tooling F F X Use Teledosimetry F F X Robotics F F X Scaffold Type Review F F X TEDE ALARA RRPCE F F X Work Bundling F F X I COPY Page 1 of 5

RP-AA-401 Revision 9 ATTACHMENT 9 Micro ALARA Plan (MAP) Work Sheet MAP 08-068 Describe Micro ALARA Plan controls implemented and expected benefits:

• This MAP is for contamination control outside of the main RCA. Activities covered are CST

-Underground Piping Weld and Hot Tap, and RP support

• No system breach allowed during inclement weather (i.e., rain, high winds).

• Erect a tent or similar enclosure at cutting location. Tent will have a non-porous floor.

Ensure that all discharge line mechanical fittings have secondary containments.

Periodically monitor discharge hoses to verify no leaks.

Hepa ventilation will be used to create a negative pressure inside of the tent. Stop work if negative pressure inside of the tent is lost. Reestablish prior to restarting work. Discharge HEPA to a monitored release path, TB has been used in the past.

RPT will perform survey to verify dose rates and contamination levels.

RP Tech will brief all personnel of dose rates before entry.

• RPT to verify area is properly posted. -

" RPT (or other individual authorized by RP Supervision) to escort RAM movement from one RCA to another.

/

• Obtain at a minimum, one breathing zone air sample during system breach. -

" Obtain a low vol air sample inside of the tent.

Review / Include applicable Operating Experience, Lessons Learned, and job history:

AR # 674916 Condition

Description:

4-6K dpm/LAW found on pavement outside CA at TWST during demob of tent and area. Contamination was at base of tent and approximately 1/2 square foot. Area outside tent is posted RA,RMA,RWP.

Immediate actions taken:

notified supervision, duty station mgr, RPM,WWM and duty shift mgr. decon of affected area Recommended Actions:

continuation of demob to see if any contamination is under the floor boards.

Operable Basis:

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RP-AA-401 Revision 9 ATTACHMENT 9 Micro ALARA Plan (MAP) Work Sheet MAP 08-068 N/A Reportable Basis:

Contamination was found outside of a posted contamination area but inside of an RCA. This is not reportable per the Exelon report-ability manual.

Reviewed by: CARL J SUCHTING 09/25/2007 00:02:21 CDT Reviewer Comments:

Reviewed by: 09/25/2007 07:35:21 CDT Reviewer Comments:

9/25/07 VJF > direct frisk of pavement inside and outside posted area showed no detectable activity above background. Smear of contaminated area was 6-8K dpm/1 OOcm2. Contamination was deconned to no detectable activity.

SOC Reviewed by: JERE E FREEMAN JR 10/12/2007 09:11:23 CDT SOC Comments:

09/25/07 Follow-up RP Close to WGE, to RP - WGE to address cause of contamination event. WGE due 1;0/09/07.

Follow-up RP 09/28/07 KB - returned by MRC for RP to conduct a WGE.Department review performed by: 10/02/2007 08:09:08 CDT Evaluation Comments:

Condition/Problem Statement: Contamination found on pavement outside contamination area at Torus Water Storage Tank (TWST). Contamination was inside radiological area posted Radiation Area/Radioactive Material Area (RA/RMA). Condition was found during demobilization of area while taking down the containment tent at the TWST manway.

Statement of Cause: Sludge from the tank was placed into drums inside the containment tent at the manway. Due to rain and the front entrance to the tent not being sealed, water entered the tent, and some of the sludge on the herculited containment tent floor migrated through afailed seam and found its way outside the containment tent onto the pavement.

Extent of Condition: Contamination was contained to a small 0.5 ft2 area.

This area was immediately deconned and survey CAA-07-06888 was done and no contamination was found in adjacent areas inside and outside the posted RA/RMA. No other containment tents are currently in use in the plant and the area at the TWST was demobed and down posted to an RMA at the TWST Page 3 of 5

RP-AA-401 Revision 9 ATTACHMENT 9 Micro ALARA Plan (MAP) Work Sheet MAP 08-068 fence.

Evaluation of any SOC Comments: Work Group Eval complete and action item (674916-02) created to evaluate the use of a sealed containment tent and/or use of a drip pan under the containment tent in the future and captured lessons learned in ALARA plan post-job review.

Manager review performed by: JOHN A RENDA 10/09/2007 09:25:51 CDT Manager Comments:

Action item #2 updated to include use of a sealed containment tent and/or drip pan and add lessons learned to the Alara plan post job review.

MRC Reviewed by: TIMOTHY SEXSMITH 10/10/2007 11:18:28 CDT MRC Comments:

10/10/07 - KB - returned by MRC to incorporate comments Comments / Discussion:

The major concerns with this evolution are the potential to have an unmonitored release or a spill of radioactive material to the environment. This is a very low dose evolution. Due diligence by the work group and Rad Protection is required to avoid any unmonitored releases or spills of radioactive material to the environment.

Page 4 of 5

RP-AA-401 Revision 9 ATTACHMENT 9 Mi~ro ALARA Plan (MAP) Work Sheet.

MAP 08-668 Approvals: (signature)

Originator Jeanette Raby/ -s- D ate: 4/22/09 Task Manager Gary True/-s- D ate: 4/26/09 RP Supervisorr: Bob Heffner/-s- Date: 4/22/09 K

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