ML101550529
| ML101550529 | |
| Person / Time | |
|---|---|
| Site: | Three Mile Island  |
| Issue date: | 12/01/2009 |
| From: | NRC Region 1 |
| To: | |
| References | |
| FOIA/PA-2010-0118 | |
| Download: ML101550529 (7) | |
Text
ASsignment Keport rage /z3 Or 4U
-VAR 00999752 R~port Aft Fac: Three Mile AR Type: CR Status: APPROVED Island Aft Unit: 01. Owed To: A5531CAP Due Date: 12/31/2009 Aff System: -- . Event Date: 11/30/2009 CR 4/D Disc Date: 11/30/2009 Level/Class:
How H02 Orig Date: 12/01/2009 Discovered:
WR/PIMS AR: Component #: -
' equest Detals' -ý
Subject:
RP AIRBORNE ENGINEERING CONTROLS VALIDATION
Description:
Originator: DAVID W ETHRIDGE Supv Contacted: R. Davis Condition
Description:
Based onthe initial findings from the root cause report following the unexpected increase in reactor building airborne levels on 11/21/09, the TMI Radiation Protection Manager has requested that TMI station RP Airborne Engineering Controls be validated by RP personnel following a job site review of all plant installed portable HEPA ventilation systems and HEPA vacuums to ensure that procedure controls and requirements are being met. This validation will include a detailed review to ensure that all portable HEPA ventilation systems are installed and operating correctly, that there are no uncontrolled non-HEPA vacuums in plant'radiological controlled areas, that periodic inspections meet procedure guidelines, and that each HEPA and vacuum is properly logged out to the appropriate location.
Immediate actions taken:
Initiated a detailed inspection via a checklist of portable HEPA ventilation units and HEPA vacuums in use at TMI within the RCAs. The inspection will also ensure all non-HEPA wet vacuums are taken out of service.
Recommended Actions:
Results of the detailed inspections of portable HEPA ventilation units and HEPA vacuums and non-HEPA wet vacuums will be documented and corrective actions will be initiated as necessary based on these results.
All non-HEPA wet vacuums found in a RCA will be taken out of service by cutting the electrical cord.
Operable Basis:
Reportable Basis:
Reviewed by: EDWARD M CARRERAS 12/01/2009 02:00:33 CST Reviewer Comments:
There area no operability or reportability concerns.
Assignments o_ (t Assign #: 01 Assigned To- Status: AWAIT/C http://eamzenco.ceco.com/cap/servlet/ReportARServlet 12/1/2009,
-. 6 1"'- j rage Aft Fac: Three Mile Prim Grp: ACAPALL Due Date: 12/06/2009 Island I Assign Type: TRKG Sec Grp: ()rig Due Date: pp/pp/pppp Priority:
Schedule Ref:
Unit Condition: "
tf >, . *, .1 SubjectlDescription: RP AIRBORNE ENGINEERING CONTROLS VALIDATION http://eamgenco..ceco.com/cap/servlet/ReportARServlet 12/1/2009
.i iw - ASsignment Keport Page I or 5 Go Back . Print New Search Home AR 01 000225 hRe&port Aft Fac: Three Mile AR Type: CR Status: APPROVED Island Aft Unit: 01 Owed To: ACAPALL Due Date: 12/311-[2009 Aft System: 823 Event Date: 12/01/2009 CR Disc Date: 12/01/2009 Level/Class:
How H02 Orig Date: 12/01/2009 Discovered:
WR/PIMS AR: Component #: -
Action Request Details
Subject:
INTERMITTENT AIR FLOW OUT OF THE RB CONSTRUCTION OPENING
Description:
Originator: JEFFREY A GOLDMAN Supv Contacted: Blair Condition
Description:
While the RB Construction Opening Curtain (COC) was open in preparation for moving the new "B" OTSG into the RB, ribbons on the outside of the opening intermittently indicated flow out of the RB.
Immediate actions taken:
TMI-1 Standing Order for breach of the RB Liner was implemented.
Specifically, the actions required when outflow is observed were taken, including closing the COC. Radiation monitors at the construction opening indicated no airborne contamination was present. Based on this, no EAL thresholds are affected. RB ventilation and Aux Building ventilation parameters were reviewed and no anomolies were noted. Note that when the COC was closed, it billowed inward, indicating airflow into the RB.
Recommended Actions:
Continue to monitor conditions at the construction opening. Open the COC when required to transport the OTSG into the RB, and if outflow is still present take periodic flow measurements and perform bounding calculations for inclusion in ODCM reports for non-routine release.
What activities, processes, or procedures were involved?
Preparation for transporting the B OTSG into the RB Why did the condition happen?
Unknown. Suspect outside weather/wind conditions.
What are the consequences?
None other than observations need to be considered for ODCM non-routine release.
Were there any adverse physical conditions?
The COC was first opened at 18:30. Flow measurements taken at 19:30 indicated an average outflow of 145 fpm. The COC was closed at 20:00. Once closed, the curtain billowed in, and flow measurements at the cracks around the curtain indicated an average inflow of 148 fpm. The COC was reopened at 21:00 for final transport of the OTSG. Tell-tail ribbons intermittently indicated inflow and outflow. Flow readings will be taken every 2 hours2.314815e-5 days <br />5.555556e-4 hours <br />3.306878e-6 weeks <br />7.61e-7 months <br /> while the COC is open for OTSG transport.
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List of knowledgeable individuals:
Goldman, Roberts, Blair, Heishman Operable Basis:
Reportable Basis:
Reviewed by: EDWARD M CARRERAS 12/01/2009 22:10:43 CST Reviewer Comments:
There are no operability or reportability concerns. Monitoring of air flo W and activity levels is in progress to support required reporting.
Sampling shows no signs of any airborne contamination. Required standing order actions are completed or in progress. This does not meet any thresholds for the E-Plan. Opening will be closed with the tarp once teh EOTSG is in the RB.
Assignments Assign #: 01. Assigned To: Status: AWAIT/C Aft Fac: Three Mile Prim Grp: ACAPALL Due Date: 12/06/2009 Island Assign Type: TRKG Sec Grp:, Orig Due Date: pp/pp/pppp Priority:
Schedule Ref:
Unit Condition:
Subject/Description: INTERMITTENT AIR FLOW OUT OF THE RB CONSTRUCTION OPENING http://eamgenco.ceco.com/cap/servlet/ReportARServlet 12/2/2009
Day 12/1/2009 The following robust barriers were: Applied: NS-P- Megill, 'MIS(
4:22:22 PM 1A Removed: NS-P-1B View Robust Barrier Listing Thomas Attachment located at:
\\Tmimsfs0 l\Tmicsf\Public\T1R18\Protected Equipment Listing [This Entry Copied From Protected Equipment Log - Daily - 12/01/2009 by
.Megill, Thomas, MISC]
Nih ,j/009 Roberts;76d ssu0med RP/Safetyv geNtnagM -.gRoberts, RPISa
.35.0728PM, Positionh."NOE:"Performed N :obes, ,Todd Todd Ou.tagf Night 12/1/2009 Wilkerson, Scott Assumed Maint Outage Manager Wilkerson, Main 5:45:00 PM Position. NOTE: Late log entry Performed by: Scott Outa, Wilkerson, Scott Man, Nigt' 1/'" 20 htown:Sa 6t ,.Sp -uldmgýShut&
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Night 12/ 1/2009 Boring, Keith Assumed Eng Outage Manager Boring, Eng 6:27:07 PM Position. NOTE: Performed by: Boring, Keith Keith Outaý Mana Night~
~ 12/12009, <-'.G61'~ thanj,.ýme Ops Outitge aae~;~lfin Night- 12/ 1/2009 -Fuel Transfer Canal Level Check at Rx Services Vanwinkle, MIS(
8:38:51 PM Trailer FTC LEVEL IS ACCEPTABLE check made Michael from CR Night'ý 12//2009 Whfilme th'eV-6V RB CosrcinOeigCrtiHCC f lmn p
-9:5636.PM wasopni rprtoo oitgthene ffeyAOu
,ý breac of theR Lie was imleened
Specifically, the actions required when outflow is "I observed were taken, including closing the COC.
Radiation monitors at the construction opening indicated no airborne contamination was present.
Based on this,.no EAL thresholds are affected. RB ventilation and Aux. Building ventilation parameters, were reviewed and no anomalies were noted. Note that when the COC was closed, it billowed inward, indicating airflow into the RB. Recommendation for action: Continue to monitor conditions at the construction opening. Open the COC when required to transport the OTSG into the RB, and if outflow is still present take periodic flow measurements and perform bounding calculations for inclusion in ODCM reports for non-routine release. IR 01000225 generated.
~4$~I 1,2/4/20 ~ pOt(I0,;f f's. iNo Spaulding", .S.hutdt Night 12/1/2009 Smith Jr, George W Assumed Shift Outage Director Smith Jr, Shift 11: 21:41 PM Position. NOTE: Performed by: Smith Jr; George W .George Outa
.*W Dire(
wo g rQ 7) 4: 52:37 AM, A oal ch in sttr s weii' rid d to th SGT'" <Q9 Night 12/2/2009 RP instrume ell to the ground due to a broken Smith Jr, Shift 4:53.47 AM stra*p. e strap w 'sereplaced and an issue report was George Outa, generated. W Direc Night 12/2/2009 A *nd hard attonight, fell from the HTS. No Smith Jr, Shift I .5:00 11 AM equipment"-was-damaged-nowasone was injured.
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~Night ~. 1212/20.09 'AL-V ýidaedhardta.wtoio ht fell fro te HiTS. Noet' Smith Jr,, Shift, t~e~12' Direc 5:4 q-ii6heR 45e"AMg~ 3 ])'1&'Ialte, dsft , 18 foeetigý Ww I-~~ ~~
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' *eleaibii6of e feet . Readmigs wYrý,e given.
to th ocorniiig SOD. Coituin oening:rigIhtit, sidN-22/5 a0d 125 6 fee and 12f feet in eOutafg Aeio)
D.and o~nlrightF s'6-&250 -and 40 150an At s--g2 6e
ýa-fid 9At.12At bnxjfik 6net2 indefvside-42f 5:56:50 AM MnagerPostion. idd2e'et in on let Performie-2 pNOTE: 8 in ir"6nrightsi ad. 56 leTm e- i . Ot 2WAt -18 feet4in § aiidl Night 12/2/2009 Goldman, Jeffrey A Relieved from Ops Outage Alvey, Ops 5:56:50 AM Manager Position. NOTE: Performed by: Alvey, Tim Tim D. Outa D. Man Day i WAnssumed afety SgO e12/2/2009
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-- 0:6006 AM, P~iiioi>NTE: Perfore b e-lTois Thomas_ ~S afk,-
- ~~ Lzlna Mt Day 12/2/2009 Connelly IIjohn E Assumed Maint Outage Manager Connelly Main]
6:02:07 AM Position. NOTE: Performed by: Connelly II,John E TIJohn E Outa, Man,
.~~~ay1 t2/2009 MeRoer'-D--il' Asdai f!3AaDeoraie 615:241 AM ýPositioffi NOTE: Pe D'h _D M Day 12/2/2009 Wickel, To'dd Assumed Eng Outage Manager Wickel, Eng 6:52:27 AM Position. NOTE: Performed by: Wickel, Todd Todd Outa:
Man, Iq