ML20116M765
| ML20116M765 | |
| Person / Time | |
|---|---|
| Site: | Clinton  |
| Issue date: | 04/25/1985 |
| From: | Connell W ILLINOIS POWER CO. |
| To: | James Keppler NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION III) |
| Shared Package | |
| ML20116M770 | List: |
| References | |
| U-0803, U-803, NUDOCS 8505060345 | |
| Download: ML20116M765 (39) | |
Text
{{#Wiki_filter:____ ______ U-0803 056-85 (04 -25)-L 1A0120 ILLIN0/S POWER 00MPANY CLINTON POWER STATION. Fi.R. #3. BOX 228. CLINTON. IL 61727 April 25, 1985 Docket No. 50-461 Mr. James G. Keppler Regional Administrator Region III , U. S. Nuclear Regulatory Commission 799 Roosevelt Road , Glen Ellyn, Illinois 60137 Attention: Mr. Ron Paul
Subject:
Investigation of Unauthorized Personnel in a Restricted Area
Dear Mr. Keppler:
Attached is an investigation report conducted by the CPS Radiation Protection Department concerning a radiography incident involving unauthorized personnel access into a restricted area (Drywell). This report was requested by Mr. Ron Paul, Region III NRC inspector. As discussed in the attached report, the root causes of this incident have been identified and corrective actions have been implemented to prevent recurrence.of such incidersts. If you have any questions on this matter, please contact me. Sincerely yours, thW 4tAY M Assurance TLR/ls Attachment cc: B. L. Siegel, NRC Clinton Licensing Project Manager Illinois Department of Nuclear Safety NRC Resident Office Director, Office of I & E, USNRC 8505060345 850425 PDR ADOCK 05000461 S PDR
T-Investigation of Unauthorized Personnel in Restricted Area While performing radiography on joint number 1RR1055-17 and 18 (Traveler number RR-1005) at the 730' elevation of.the Drywell (AZ 140*), Baldwin Associates (BA) personnel Ron Olson and William (Bill) Davis were observed descending a ladder into the radiological controlled area from the 755' elevation. US Testing personnel, Ray Paxton and Lenard Brinks, immediately secured the shot and made required notifications. The shot was first exposed at approximately 0110 on January 5, 1985 and secured at approximately 0112 the same date. D. W.'Hillyer (Plant Staff), R. Baldwin (IP QA) and J. Grimm (US Testing RPS) reported to the site at 0230 to investigate the occurrence. US
. Testing phone lines were not functioning and D. Spencer 'BA Safety), F.
Christenson (US NRC) and R. F. Haight (Plant Sta'ff) were notified from the Main Control Room at 0310. Interviews with both BA employees and US Testing personnel verified that the area was.not properly searched and controlled. Preliminary estimates of 10 mrem exposure for R. Olson and W. Davis were indicated based on a survey taken by R. Paxton (UST). Immediate disciplinary action was taken against lead radiographer Lenard Brinks (Level II Radiographer) and Gary Chandler (assistant' radiographer) who had performed the search on the 755' elevation Drywell. The area was walked down b,y D. W. Hillyer and J. Grim 5 and condition report 1-85-01-018 was initiated and submitted to the Operations Shift Supervisor J. Owens. On January 6, 1985, the same source was used to recreate the shot and surveys were taken by Illinois Power Co. personnel, D. Caswell and D. Seiller (Rad Chem Technicians). (See attachment 8). Surveys were taken with calibrated ion chambers which were response checked prior to use. Based on a timed' exposure of two minutes, and using the highest observed radiation level of 600 mr/hr, the assigned personnel exposure is 20 mrem for each BA employee.. R. Paul-(US NRC inspector) and D. W. Hillyer conducted interviews with both BA employees as well as US Testing personnel Brinks and Chandler. Both BA employees were briefed regarding levels of exposure and the biological significance of-such exposure by.both R. Paul and D. W.
+
Hillyer. All individuals were provided opportunities.to ask questions cnd were advised to acc D. ".."illycr at cny timc shculd they have ou, questions. The work area was walked down by-R. Paul and D. W.-Hillyer and announcements with the Gaitronics system and bullhorns were made in the area. Gaitronics announcements were not audible. Bu11 horn - announcements were clearly audible. A formal critique was held on January-10, 1985 to identify root causes. l C: 1
4 Meeting January 10, 1985 1700 hours - 1846. Attendees. D. W. Hillyer - Supervisor - Radiological Operations (panel member) J. A. Grimm - US Testing Co. Radiation Protection Officer B. Moss - US Testing Co. Project Manager M. Jubran - Baldwin Associates, Civil / Structural R. Olson - Baldwin Associates - Surveyor B. Davis - Baldwin Associates - Laborer R. F. Haight - Supervisor - Radiation Protection (panel member) L. Brinks - US Teacing Co. Level II Radiographer R. Melton - US Testing Co. Assistant Radiographer R. Paxton - US Testing Co. Level II Radiographer R. Irvin - US Testing-Co. 3rd Shift Senior Supervisor M. Porter - US Testing Co. 3rd Shift Field Supervisor. F. L. Wolking - Supervisor - Radiological Assessment D. Kahn - Supervisor - Radiological Engineering R. Paul - US NRC (panel member) Summary of investigation R. Olson and B. Davis reported for work at 1600 and were given a list of hangers to inspect by M. Jubran. (See attachment 2, Layout request) The hanger inspected in the Drywell was at azimuth 196*30', 755' elevation Drywell.and was worked under traveler E27-1607 WCP-1B. At-1 approximately 0030, R. Olson and B. Davis entered the Drywell through the personnel airlock'on the 737' elevation, turned to their right and
- traveled abo'ut 180 inside the drpwell to a wooden ladder (see number 1 on attachment 3 for location). They ascended this ladder to the 755' elevation and proceeded to the hanger at azimuth 196 30'. As their flashlight'was not working, both individuals moved approximately seven feet closer to the Reactor Vessel Bioshield to repair the flashlight under a droplight. When the flashlight was repaired, the workers resumed work on the hanger. They heard other personnel say words to the effect " ready to shoot" and thought this might refer to radiography.
They proceeded to.the ladder immediately south of the equipment access hatch and descended (see number 3 on attachment 3). The following points were established through questions from the panel: '~ While on the staging, both BA employees noticed three individuals wearing white hats descending the stairway. No significance was associated with this. Supervisor M. Jubran had not received any notification as to radiography locations or times nor had he or the other two workers noticed the i postings in the Radwaste Building or brass alleyway. The shift hours l for BA were_1630 to 0230. Posting was established at 0030. Both R. Olson and B. Davis stated that they had not heard any bullhorn or Gaitronics announcements. When entering the Drywell, they had not noticed any US Testing personnel, nor were any posted areas or flashing lights observed.
w<n 4 l r
- The surveyors did not notify M. Jubran that-they were involved in an i incident involving radiography until January 6, 1985.
t [. When leaving the site, the surveyors noticed the posting in the RW
- Building and brass alley for the first time that day.
Radiographers reported to site at approximately 2330 to radiograph elbow at. azimuth 140* on the 730' elevation in the drywell. Notice of l operations was completed and rout.ed for signatures at 0001 through 0030 (see attachment 4). Signatories include Security, IP Operations and the BA General ~ Superintendent. This notice was posted at the brass alley , and RW building N/W coraer at approximately 0030. US Testing personnel t were at the Drywell at approximately 0030. The following individuals were assigned: h Ray Irvin - 3rd Shift Senior Supervisor I ; Mike Porter - 3rd Shift Field Supervisor Ray Paxton - Level II Radiographer fj Lenard Brinks - Level II Radiographer (Lead Radiographer) L Grant Cavins - Level I Radiograpaer-Bill Norton - Assistant Radiographer Rich Melton - Assistant Radiographer Gary Chandler - Assistant Radiographer Trainee L R. Irvin was stationed at-the equipment access hatch to prevent personnel from entering the drywell. L. Brinks and R. Paxton set up g shot at the elbow and posted the high radiation area posting at-two j . locations (see attachment 3).. Handrails provided natural barriers for the remainder of the high radiation area boundary. M. Porter was inside j, the personnel airlock on the 737' elevation, but was not specifically [ controlling the area to prevent personnel from entering. R. Melton used the bullhorn and searched the 712' elevation and then the 737' elevation travelling in a counter clockwise-direction. Approximately 5 announcements were made on each elevation. As he finished the 737'
! elevation, three QA individuals entered the drywell and began ascending
- the stairway between the equipment access hatch and the personnel j airlock. R. Irvin to.ok the bullhorn from R. Melton and used it to j attract the attention of the QA personnel. The bullhorn was not used by any other personnel. Norton went up to the 828' elevation of containment and checked the reactor vessel cavity to ensure the hatches
- to the drywell were shut and no personnel were in the cavity. Norton then descended to the 737' elevation and entered the drywell. After the QA inspectors left the drywell, Norton ascended to the 782' elevation of
". the drywell, searched 360* and returned to the 737' elevation. G. Chandler had climbed the wooden ladder between the equipment hatch and the personnel airlock to the 755' elevation. After walking the staging on the 755' elevation, he searched inside the reactor vessel bioshield and the 762' elevation before returning to the 737' elevation. The [ radiation area postings were placed at the equipment access hatch and the personnel access hatch at approximately 0103. IP security and i 0 Operations were notified at 0103 that radiography operations were about t to commence. An announcement was made on the Gaitronics and the I bullhorn at the equipment access hatch that radiography operations would begin in five minutes. i n8._ s i .- .a _
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s Theis2camera was assembled by G. Cavins at approximately 0045. A 76 Ci Ir source was used (Source number 6487) with camera number 2270. After'the searchers had finished, R. Irvin informed R. Paxton and L. , 4 Brinks that the signs were up and to begin the shot. The first shot was 1 cranked out between 0110 and 0112. The shot was timed by L. Brinks ; j using a stopwatch. G. Cavins was stationed between the staircase and
- i. the personnel airlock and noticed the BA employees _ starting to descend
, the ladder from the 755' staging. He yelled to Brinks to retract the
' source. Brinks' pressed the stopwatch and R. Paxton retracted-the , source. The indicated time.on the stopwatch was two minutes. R. Irvin talked to the surveyors to determine where they were. R. Irvin directed i R. Paxton to survey 1the work area near the hanger and-the staging where the BA employees were.
L. Brinks re-exposed source. Using a Victoreen 492 (GM tube) Number 1795, R. Paxton observed 100 mr/hr at the hanger. While walking toward the ladder, the radiation level increased to 300 i mr/hr-and back to.200 mr/hr at the top of the ladder. The radiation levels halfway down the ladder were 500 mr/hr.- Paxton. observed 2 mr on his dosimeter. The source was exposed for less than one minute.
- M. Porter and R. Irvin-escorted surveyors to US Testing trailer and notified D. W. Hillyer, JQ Grimm and R. Baldwin.
The following points were established through ques.tions by the panel:
- .There may have been up to ten minutes between the last use of the
- - bullhorn to evacuate the drywell and when the drywell accesses were j . posted.
The Drywell was busy, with high noise levels due to fans and equipment. Gaitronics announcements could nof be heard on the staging as verified by D. W. Hillyer and R.- Paul. Bullhorn announcements were clearly
- audible at the hanger when announcements were made directly below on the 737' elevation.
- US Testing personnel have no formal process for assigning search patterns and responsibilities.- Search patterns are established by the assistant radiographers and trainees doing the search.
With two other supervisors controlling worker activities, the lead l radiographer was not sure.how his responsibilities were defined. , l The lead radiographer was not aware that he was~the assigned lead j . radiographer when the shot was performed. US Testing search patterns were interrupted by' entrance of the QA 4 inspectors. .m . mo o e m. m. patterns were not resumed. JUS Testing supervisory personnel establish radiation boundaries based on , calculations (inverse square). i. ! = t : l
- .- ~. . . . - - - .- . .
US Testing anticipated performing approximately 3 shots per hour after the first shot. The first shot was expected to take 1 hour. US Testing survey results were 100 mr/hr at the hanger. IP survey results were 400 mr/hr at the hanger. US Testing supplied instrument No. 1795 to Illinois Power Company for evaluation to known sources.
-IP evaluation of US Testing meter No. 1795 indicated a response below the 10% calibration range to known radiation levels. .In addition, No.
1795 is a gieger-mueller instrument which slightly overresponds to Iri s 2 . (see Attachment 13). The true dose rate would therefore be slightly less than thq measured 100 mr/hr. IP instruments were evaluated and performed within calibration standards. The R0-2As utilized are ionppption chambers and respond equally to the calibration standard and Ir . Other possible reasons for differences in measured dose rate would be a different position of the source during the recreati.on of the incident or slightly different surveyor locations. (see Attachment 14). Dose assignment to personnel is based on the highest observed readings from the Illinois Power Company survey. US Testing instruments are; calibrated every 90 days. The last calibration date was December 7, 1984. A battery check is performed daily. US Testing procedures do not require a response check prior to use. Instrument No. 1795 was not response checked prior to use. i l l
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Action Items US Testing to supply copies of calculations used to establish boundaries to Supervisor - Radiological Operations. These copies to be forwarded to R.-Paul. (completed January 18, 1985) Attachment 10
~
US Testing to supply copies of calibration Data Sheets and Calibration Log to the Supervisor - Radiation Protection. These copies to be l forwarded to R. Paul.-(completed January 18, 1985) Attachment 11 j US Testing to supaly a copy of the pocket dosimeter record for R. Paxton. Copy to 3e submitted to Supervisor - Radiological Operations and forwarded to_R. Paul.- (completed January 18, 1985) Attachment 12 Root causes and Corrective' Actions
- 1) Baldvin Associates (BA) is not effectively distributing notice of radiography operations to all supervisors and trades. In addition, each senervisor is not aware of his immediate responsibility.as the superviser to control work in areas where radiography is planned.
Recommended Corrective Action:
'US Testing to prepare and distribute a Preliminary Notice of Radiation Operations to BA and Project Management. The Preliminary Notice of Radiation Operations shall clearly. state no work to be scheduled in identified areas when radiography is scheduled.
(completed 1/24/85)_ Attachment 15. BA to identify additional list of supervisors to be trained. (completed 1/21/85) Attachment 16. Plant Staff to provide training. (completed 2/13, 2/15, 2/27/85) Attachment'17A, 17B, 17C. Concurrence ,/- h,
- 2) IR3 Testing proeddures need clarifying instructions for clearing-areas prior to radiography operations. US Testing search patterns were interrupted by personnel entering ~the controlled areas.
Search patterns were not resumed. US Testing search practices allowed personnel to enter the controlled area after-evacuation of the Drywell had started. Recommended Corrective Action: US Testing Co..to. review procedures-to determine if the following steps'are' adequately outlined:
- require physica1' search in all areas
- require frequent use of the bullhorn in all areas being i- evacuated.
I - establish' formal search patterns for~the drywell-
- require the use of a bullhorn'by all_ assigned searchers in theLdrywell establish methods.to ensure completion of assigned search areas.for lead radiographer review-require.a copy of notification of radiography,be submitted to.
~
RP g' require RP signature approval for Radiography to commence in the.Drywell
,._-_n - . _ - , _ _
Following the review: initiate a procedural revision if necessary. Illinois Power Company Radiation Protection Department to review US Testing Co. procedure revision and subsequent revisions. (procedure revision to incorporate review deficiencies and obtain Illinois Power Company Radiation Protection Department concurrence completed 2/27/85) Attachment 18. US Testing to establish procedural methods and training to ensure completion of assigned search areas. (completed 2/27/85) Attachment
- 18. (completed 2/22, 2/27, 2/28/85) Attachment 19A, 19B, 19C.
US Testing to develop control measures to ensure that personnel do not enter any. area after evacuation of that area has started. This would include stationing personnel at entrances.to prevent unauthorized entry. (completed 2/27/85) Attachment 18 Concurrence M/ j
- 3) US Testing per nne were given a time limit to perform shots.
Radiographers identified a feeling of urgency due to time constraints. This pressure may have contributed to a less than thorough search being performed. Recommended Corrective Action: US Testing Co. to provide specific training.for all radiographers
-to stress the importance of doing a thorough, complete search regardless of time constraints. (completed 2/22, 2/27, 2/28/85)
Attachment 19A, 19B, 19C Concurrence MI j_
- 4) The' number of fi instructions given by US Testing supervisors contributed to the lead radiographer not assuming all responsibility.
Recommended Corrective Action: US Testing to provide special training or instructions to identify field responsibilities. (completed 2/27/85) Attachment 18. Concurrence ,/-
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s 3 ( TED STATES TESTING COM( ;Y, INC. 1 l NOTICE OF RADIATION OPERATIONS United States Testing Company, Inc. will be conducting RADIATION OPERATIONS at the following locations: 73 0 ' dor /h.<~m / . C g i sG. /% gas / p .1. ,9c? o 936' Aux ~Bs4 / sto ltr - 753 ' &faswu/ bu/cid:< D.,, uc r/' sfz.zcs *
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737 ' ,cfc/ y 3m'p st/ j y. This notice will be removed when operations are concluded. Date: / /$" k r de Radiation Operations Supervisor Security Received by b h w 2 Date /- S-fr Time eje R;v. 7/84 I.P. Operations M4 Date / Time 88d/
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DATE: /- $ .P S~ Corresponds to RT Report No: 4 8-/o05' Clinton Power Station Unit No. / No. of Exposures / Original d Rex. Source Model No./ Serial No. MW- 7 !0 9'# 7 Survey Meter Model No./ Serial No. +'9J // 7 9f- v956 Radiation Level Source Before Unlocking 4/,2 mr/hr
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Attachment 6 ("$ * " NIO2-HU fl#fRi W' CLINTON POWER STATION SUPPLEMENTAL %.M pap,OLO ICAL soRVEY SHEET We% Date E6-E Performed by: CMTtr/f2L #4&fC Time ._QQOf Reactor Power'._ A//4 Instrument Type. Ro ?- *t # 507 * / G 4 Se lal No /$6 i D e Date' l-G -T Reviewed by6 e [t SMEARS I P.o com/ICCcm No dpm/lOOcm# No dom / tOOc.n#
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.t l 6 1 Gen Area Do e Rates in mr/hr lN 2 Lootect Rod levels dee.oted by
- 3 Smeort Circicd of locateon token
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~ _ _
MSD-001-85 {} Attachment 9 TO: Dave Hillyer FROM: Mark Dodds DATE: January 10, 1985
SUBJECT:
Survey Instrument Operability Per your. request, the two R0-2 ion chambers used in the dose assessment, performed January 6, 1985, have been checked for correct operability. The response check and calibrations were performed by M. Reandeau and M. Puckett. The R0-2s were exposed to fields of approximately 100, 400, and 600 mR/hr_in the gamma calibrator. The 100 and 400 mR/hr fields were determined from a SOURCE INTENSITY MEASUREMENT DATA FORM. The 600 mR/hr field was determined using the graphs supplied by J. L. Shepherd. The following are the results of that exposure: True Dose Rate Indicated Dose Rate
#1507 100 100 409 390 600 600 #1564 100 100 409 400 600 600 After performing the above response check, each instrument was calibrated. The AS FOUND and linearity data were within tolerance. I have attached the calibration data sheets for the calibration's.of January 6, 1985 and today. -Based on the two operability checks performed today, the two R0-2s used on January 6, 1985, were operating properly.
If you have any-further questions on this matter-, please feel. free to ask. MSD:dd
= _ _
wuame,mmv . ecu Attachment 9 CPS (Rew 0) No. 7911.131:001 { { RO-2 (A) CALIBRATION DATA SHEET Source ID _ 7091 D t t:pdata due /O - / T- NS-_ Serial No. /So'7 Source ID M/A Dg update due N /1 CALIBRATION
] DESIRED IIRUE LOSE AS FCUND 'AS I. EFT DESIRED '
UUE LINEARITY CRANGE DOSE PATE RATE (D 1 ID r101) (D 2.3 %) DOSE MTE DCSE RATE (D 1 (D 10%) 50 R/h 40 R/h /[+
/ 8h Mh 10 R/h 8[4 A/[A 5 R/h 4'R/h Y // 9,0 9, 0 1 R/h /, O A /< 0 E 500=R/h 400nR/h YO7 I/O 9/O 100ctR/h /co /00 50=R/h 40rcR /h 4/,5' 37 Y/ 10ma/h /0 P ' /0, f SeR/h 4-d/h~ 4/ 3I 9. A InR/h // /i oI DESIRLD TRUE DOSE AS.FOUND OBSERVED CORRECTION RANGE t DOSE RATE RATE (D_) (D _ 10*O DOSE RATE FACTOR (CF) 5 corr /h 234 mrad /h M [4 M M//
Remarks: j Mo /- co // d-* 4o/ b' * !* - Calibrated By: Reviewed By: D%
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,r & Date Date
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Attachment 9 RO-2 (A) CALIBRATION DATA SHEET Scurce ID #f> Dg . update due /0-/f- ST Serial No. /5'6V - Source ID # [4- D g update due A/7
/
CALIBRATION
'l DESIRED TRUE DOSE ' AS FOU5D lAS LEFT I DESIRED T.PU E I LINEl,RITY
-(RANGE DOSE RATE RATE (D ) (D t10%) Ig t3*.) I DCSE RATE DOSE RATE (D M (D r10%)
50 R/h 40 R/h //h A/ [f 10 R/h M/4 5'R/h 4 R/h ~ Yr // Ye } I2 1 R/h /r oA // 500:3/h 400nR/h 07 760- V/o 100mR/h /60 /co ECGlh = a/h 4b ) 'tY Yh 1072/h /0 Y // ScR/h 4mR/h Y/ I' I 'Y / ltnR/h /< / // LESIRED TRUE DOSE AS,FOUGD OESERVED CORRECTION
,RANCE LOSE RATE RATE (D ) (D t10%) DOEE RATE FACTOR (CF) 500nR/b 234arad/h 8 bsb.a efa a s .< s /- ,, .d a cca e,-;;Q, ,q , J.,3 /va , s, f ha s GM3E S' ks Er~c/ -
, sea /
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Calibrated By: _, Date / 1 F Reviewed By: Date ,/c/a s-TARA3 Page 1 of 1
+ . . . . . ... .- 7
. CLASS CODE: NNQN ,~
3 -~. CPSNo.7911.13D001( ' ATTACHMENT 9 (Rsv. 0) RO-2 (A) CALIBRATION DATA SHEET
\
. Source ID MM 4/A D e update due jo - A7-ss' Serial No. /ro >
Source ID A/# De update due //A CALIBRATION DESIRED TRUE DOSE ' AS FOUND AS LEFT DESIRED TRUE LINEARITY RANGE DOSE RATE RATE (D ) (D 10%) (D t3%) DOSE RATE DOSE RATE (D ) (D 10%) 50 R/h 40 R/h /M A/4 A/A 10 R/h //A A// 5 R/h 4 R/h 6/. // M/ M /' 1 R/h /, d,2 /.o [ 500mR/h 400mR/h A/M8 396' Y/O I' 100mR/h /Ar /A A 50mR/h 40mR/h Y/.[ / 9/. 10mR/h /4. 9 /A,[ a SmR/h AmR/h M, / k. ! ! 1mR/h /* / /8 DESIRED TRUE DOSE AS FOUND OBSERVED CORRECTION RANGE DOSE RATE RATE (D ) (D t10%) DOSE RATE FACT Q (CF) 500mR/h 234 mrad /h gg M/f //A i Remarks: M
, C A t-/8Mitrza fo g ggy 4
,i ' i Calibrated By: (d 6 - mL Date /h b Reviewed By: '
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CLASS CODE: NNQN Attachment 9 , 8 '. CPSNo.7911.13D001( { (Rw. 0) R0-2 (A) CALIBRATION DATA SHEET
; Source ID N D t UPd ate due /o//1!f5 Serial No. /SM i Source ID 'T Dt update due A!d
/
CALIBRATION DESIRED TRUE DOSE ' AS FOUND AS LEFT DESIRED TRUE LINEARITY RANGE DOSE RATE RATE (D ) (D_ 10%) (D. 3%) DOSE RATE DOSE RATE (D ) (D. 10%) 30 R/h 40 R/h #!A N!A f/A 10 R/h A/!/f A 5 R/h 4 R/h l !' . i 1 R/h / . OM /* / 500mR/h 400mR/h 409 400 4 10 100mR/h /CO /CO 50mR/h 4CmR/h NI b ! 10mR/h /O' /O SmR/h 4mR/h <I N' ImR/h [*[ !' DESIRED TRUE DOSE AS FOUND OBSERVED CORRECTION RANGE DOSE RATE ~ RATE (D ) (D t10%) DOSE RATE FACTOR (CF) 500mR/h 234 mrad /h M !ri //!d N II 3 , Remarks: fjof uhbrghd for bel mfA%fM E *d5
.:;7 Calibrated By:
Reviewed By:
@ #5 a / G eff /[ Date -
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i O' TAPA3 Page 1 of 1 G 6 6
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Attachment 10 UNITED STATES TESTING COMPANY, INC.
./
;/ RESTRICTED VOLUME RADIUS & SURVEY METER READING k'ORKSHEET '
d'/87 / Joint & Trav.# Name Radiographer Ci N. Sec. Shots R s. R High S
& Iocation Init. of Assigned (Yards) (Yards) (Mr/Hr)
- Perim. Guard ,
iYuW 7g.yocs- 3 M L W Ww fo/d* //A-tocr.7/ S f f(p A2 s'/0 /1/ ,,3 d 22
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ist 3 - 7. i e I t 4 i COMMENTS:
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ATTACHMENT 10 UNITED STATES TESTING COMPANY, INC.
* *
- GLOSSARY OF VARIABLES * - * *:
.w Ci -------The numbe.r of Curies of the Sour.ce_(Ir 192) . 3.,.- , ,
N -------The number of Half Value Layers of Ministim Shielding -
,- ; Note: 2 =1
.. s. -
Sec-------The Total number of seconds exposure in any one hour on a particular weld. (or welds, if more than one weld in the sace area can be shot in an hour)
. Shots- ---The number of shots in any one hour on a' part'cular veld.
(or v41ds, if more than one weld in the same area can be shot in an hour) R --------A conservative estimate in YARDS of fi;, - the minimum radius of the restricted volume.
'R (High)--A conservative estimate in YARDS of the minimum radius of the High Radiation Volur..e.
S --------Pemi::sabic survey meter reading after isotope reaches the
. source tube tip or "J" tube tip. .. . -.
* *
- CALCULATION FORM'JLAS * *
- R=
( .091
- di
- Sec *- 2N ) ' + (.91
- Ci
- Shots) Yards
- !' ~. R (HIGH)= R 7 ..'
P
. S= 7200 * (See t 10
- 2N)- ,
1 I
* *
- EXAMPLE * *
- 4oneminuteshots,doub?ewallcontact.TC.CIllimator.ona
~
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- 75
- 240-[- 4 ) + (.91 x 75 x 4) Yards T 26 Yards
. R(ikigh) 26
- 7% 3.7 Yards S= 7200 *- (See + 10
- 2N)
T 25 mr/hr
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-Attachment 11
=
j U .ED STATES TESTING COMPA /, INC. e * #' , <'d , UST-NDEC-1, Rev.1-' Exhibit D-2
- ~ .
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SURVEY METER CALIBRATION RECORD ~ 1 Manufacture r
~
VIC T oRee W - - - Model No, #9R ' Serial No. 3
/ 7 f' f '
s
. v-Date of Calibration: l'/ c2. - 8' 4 Date next Calibration Due:
.s 4 - 8'- E' r
. Source Type C S /37 S/N .S S 6 9 . '
Curies _ s/96 Instrurent Range Instrument Reading Radiation Field X-100 0-1000 tar /hr 40O and' 7 s o mr/hr aoo and 900 mr/hr X-10 0-100 mr/hr 4o and 77 mr/hr g20 and 70 mr/hr X-1 0-10 mr/hr a, o and mr/hr
/,,f' a:P, o and r,o mr/hr -
s Location
.c u .s 7 ycia i 7--
Eescaths Q ll' l'a a c (> .< u y. /l & d' '/ O
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C ca 6 c u (. c hi.] t,# ca ( ,a o <- ' 1 Calibration by: T4mer ,cgg
- Approved by:
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. Applicability of USTF-NDEC-1.D2, Rev. 1 '
CO .
..n.
When current the survey meter is calibrated byC-1,U.S. Testin - revision is specified in the Project QA Manual. .
'~
Instructions for Use of USTF-NDEC-l'.D2.
. . Rev.1 .........9.. '
1.0 - i .
.m . .u -
Record line. the survey meter manufacturcr s name on. the " Manufacturer" ,
- s. . ..
. 2.0
- . :? ,.:
Record the survey meter.model nember on the "Model No."^ line. . . q. .. .
'. ~. "' ., j;:'
- 3. 0 - . . -
Eccord the survey cieter serial n' umber' on the " Serial No." l'ine.
* ' , z.
4.0 .. - ..
.n '. *. .' '
Record the date
.. * <. e. ~.; . :.
Calibration" . line.the survey meter is calibrated 6n the "Date of
.~,- . . .c .
5.0 .
'J ( - <: --$ : . .,',-.
Record the date the survey meter is due for re-calibration on , the "Date Next Celibration Due" line.
-s "'
6.0 -
, n -
r.. rs ' ., :- Record the "Scurce the Type'.' type ofline. Source used to cali.brate the survey meter on ' 7.0 . Record tite source serial number on the "S/N" line. - 8.0 i : .: : 9.0 Encord the number of cdrics of' the s'ource . on the ne. " Curies ' li
' Record the calculdted ' radiation field values in th '
Field" block, in accordance with the type of source usede "Radia . as tion. ~ , specified in the UST Radiation' Safety Program. ' 10.0 . calibrate . . , the survey meter in accordance with the survey meter , Record the readings on each scale in the n." instrumen 11.0' . .
.w - .
Record the site location on the "Lecation" line. - -
'~
12.0 Eval ua te of UST-EEC-1, current revision.the results of the calibration .
' ^- in accordance w line..
Record this evaluation on the "Remarkn" 13.0 Sign en th : "Calfbration~By" line. . -
.. .. ~
14.0 Submit . desighated on the Company License as a Radiation .5' Protec Officer or Radiation Operations Supervisor. -
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POCKET DOSUtETER RECO UNITED STATES TESTING COMPANY, INO.
) Dosimeter No. .9993-6, Victo Model No. Y/
Name of Technician e/ M/ %
// /
mR mR mR mR Begin End mR mR Begin End mR mR DATE Shift Shift Daily Weekly DATE Shift Shift Daily Weeki
/>6fy O I.2 /2 50 l-os o 5 f /7 D 7- SVO
+- - vm J.2 ja u -v 62 -10 Ps: c /0 p? 27
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/2-00-89 _
O 2 # 10 l2-2u-84 m _ 0 c2 7 r3 I) h) l -3 D 0 o G l
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(._ 1- 7-25 0 3 3 /0 1.Kr a 2 - l2 - 1
. - .:.= ~, _ .~ c -w . a a +m v+ aa
( MSD-002-85 Attachment 13 TO: Dave Hillver FROM: Mark Dodds DATE: January 22, 1985
SUBJECT:
Operability of a US Testing Instrument Per your request,'a US Testing survey instrument used by US Testing personnel to conduct radiological surveys during radiography operations was response checked using our gamma calibrator. The response check was performed by M. Puckett. The following information is identifying data of that instrument: Manufacturer: Victoreen Date Calibrated: 11/2/85 Model Number: 492 Calibration Due Date: 2/2/85 Serial Number: 1795 The instrument was exposed to fields of approximately 100, 200, 300, 400, 500, 600 and 700 mR/hr in the gamma calibrator. The instrument was orientated such that the front of the instrument was facing the source, and the active region of the detector was centerline with the source beam. The following are the results of the response check: True Dose Rate Indicated Dose Rate 100 80 200 190 300 280 409 380 500 440 600 510 700 600 The 100 and 409 mR/hr fields were determined from a SOURCE INTENSITY MEASUREICNT DATA "CRII. This form accounts for the decay of the source and is generated on a periodic basis using a Condenser R-Meter. The 200, 300, 500, 600 and 700 mR/hr fields were determined using-the graphs supplied by J. L. Shephard. These graphs were generated in October, 1983, and.do not account-for the decay of the source. If you have any questions concerning this response check, please feel free to ask me. MSD:dd
, ( {" MSD-003-85
, Attachment 14 I TO: Dave Hillyer FROM: Mark Dodds DATE: January 22,-1985
SUBJECT:
Comparison of Instrument Readings i i
'Per your request, an investigation'of the difference in survey
. instrument readings-for the January 5, 1985 radiography incident has
-been conducted. The following information is~provided for your review.
The R0-2As used by Clinton Power Station personnel contain an ion chamber. The instrument is calibrated with a Cs-137 source (662 kev, Radiological Health Handbook (RHH), 1970). Per the technical manual (Attachment A) response to other energy photons can be determined. The
~ radiography source used by US Testing personnel was an Ir-192 source (average energy of 336 kev based on yields of=296 kev (.29), 308 kev t (.30), 317 kev (.81), and 408 kev, (.49), RHH, 1970). The relative response of this energy versus that of Cs-137 is 1.0. Therefore,~the indicated meter response to Ir-192, even though the meter is calibrated ~
to Cs-137, is the~ actual-dose rate, i The Victorcen instrument used by US Testing personnel contains a geiger-mueller tub'e. Per the technical manual (Attachment B), the ! indicated dose rate versus the true dose ~for Cs-137 is'0.98 and the
; indicated dose rate versus the true dose rate for Ir-192 is 1.02.
US Testing personnel calibrates this instrument with a Cs-137 source. Therefore,-based on the differences in response, the indicated dose rate to Ir-192 is higher than the true dose' rate. f Per conversation with J. Grimm (US Testing) and R. Krauth (US Testing) the accuracy to which their instruments are calibrated is *10%. The results of the response check (using a Cs-137 source in the gamma eclibrater) performed on January 21, 1985-indicate the Victorcen instrument responded low, outside the~10% band, on the 100, 500, 600 and ! 700 mR/hr fields. i l.
Conclusion:
- 1) Aireview of the locations of measurements taken by UST and CPS
.' technicians indicate that a possible cause in the differences in readings are personnel differences. UST and CPS' technicians may not have surveyed in exactly the_same locations and used the same techniques.
.. - . . -. = _ _
J(' ({ 'MSD-003-85 Attachment 14
' 2. ) The radiation levels recorded.by US Testing are higher than the actual levels. The difference in response as indicated above is compounded by.the instrument responding low to the-same type of source used to calibrate the instrument. Based on this, the differences in the CPS and US Testing instrument readings are greater.
- 3) 'Although US Testing personnel recreated the-radiography incident
, for CPS evaluation on January 6, 1985, it was possible that source was not located exactly as it was on-January 5, 1985. Directional
' characteristics of the collimated beam could cause small errors in setup to be-realized at the distances in~which the measurements were made. .This is the most likely cause of the differences in readings.
Recommendation: A dose to'each of the BA workers involved should use the cost conservative values. .This would be the results of the. survey performed by CPS personnel. The highest observed value was on the higher of the i two scaffolds,.600-mR/hr. Using this value for the entire duration of-the inadvertent exposure, and the time that the source was exposed (two minutes). yields ~the following dose: 3 600 mR/hr (l= hour) X 2 minutes = 20 mR
- 60 minutes ,
Per 10CFR20.4 (c) 20_mR = 20 mrem . Therefore, each of the BA workers should be assigned a dose of 20 mrem. 4 If you have any further questions concerning this evaluation, please feel free to ask. Attachments MSD:dd 4 1
- , ,-- - .. a-,. . -- .:. - , - . -
Attachment A { MODEL RO-2 Attachment 14 Technical Manual Eberline R0-2A SECTION I GENERAL A. PURPOSE AND DESCRIPTION g. Photon Energy Response: Nominal 215% from 12 kev to more than 1.3 MeV. (See Figure 1 2.) The ion Chamber, Model RO-2,is a portable airion chamber instrument used to detect beta (s), gamma (7) and x. ray h. Example of Beta Response radiation. The RO 2 has four linear ranges of operation to measure dose rate for x ray and 7 radiation.The ion cham. (1) Uranium Slab: 33% of true mrad /hr field ber is vented to atmospheric pressure and is specifically behind 7 mg/cm2 window with RO 2 resting on slab, slide designed to have flat energy response into the x ray region. open. 7e Model RO-2 is sensitive to $, y and x ray and is cali-brud to y radiation (2Cs). A single rotary swi:ch tums (2) " Sr. " Y: 75% of true mrad /hr field at theinument off provides a battery check, checks the zero 40 cm with slide open,8% with slide closed. setting anc <clects the range of operation. ,_ _
- i. Fast Neutron Response: Reads approximately 10%
B. SPECIFICA'ICNS in mR/hr of true neutron field in mrem /hr.
- 1. DETECTOR 2. GENERAL
- a. Size: 3-inch diame,'r, volume 12.7 cubic inches a. Ranges: Four linear ranges: 0-5. 5-50,0 500 and (7.62 cm diameter,208 cc).
0-5000 mR/hr.
- b. Fill: Air, vented to atmospa. ric pressure. b. Meter: Ruggedized, sealed, 2.38 inch (6.04 cm) scale length,2% accuracy. Linear markings from 0 to 5 in
- c. Wall: One sixteenth inch pheno &, approximately 25 minor increments.
200 mg/cm2inside 0.050 inch wall aluminum case.
- c. Response Time: 5 seconds, O to 90% of reading.
- d. Window: Two layers 0.001 inch mylar, cpproxi-mately 7 mg/cm2 total. d. Linearity: Within 25% of full scale.
- e. Beta Shield: Sliding shield or bottom of case with e. Battery Dependence: No calibration shift with positive friction lock. Approximately 400 mg/cm2 (1/8 inch battery voltage change (down to battery check mark on phenolic).
meter).
- f. -Radiation Detected: Beta, gamma,x ray. i
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Attachment 15
- 6):
TED STATES TESTING COMP /
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Date: , s' 1.- Distribution Fin':'; J. A. Grk.n, UST Co. Radiation Protection Of ficer PRELIMI!?ARY ?:0 TIC 2 OF RADIATION OPERATIONS _
': e find attached the list .3 0 r.:d io;;raphic 5.bots scheih?.cd
_. ("Ju ) _. . . . _ . .dste) ( __ ( t i me.' (dare).
<ork of arq , kind is to be scheduled in thee.e areas dun n :
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in licated er. tM a t r arbcd sch.ed.u..l e.> Ao i m fl ict s in r.he sch.dul t- si all be discussed and agrecd n the Shif Su; e: intt :.Jt...t .md Senior UST Su;ws viser.
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p \ NOTICE'OF RADIATION OPERATIONS ', e.
- r.ited 5thtes Testing Cor:pany, Inc; will be conducting RADLiTICi GPi?.r.'TO::C at'the following locations: $
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l i Attachment 16 1/21/85 TO:
. John Cook FROM: Jim L mis Attacho
/ is a list of names of second and rthird shift personnel to be considered f or tion protection trainin . 3 o
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( id Shift First Line Superd , ors Q&TS HVAC Don Rodgers 1-1314 Dave Spicer 1-1509 Terry Willis BA TS Brian Gardner 1-972 TS Chuck Bessler BA Pete Warda 1-2023 TS Dave Sronce BA Jack Massie 1-1675 QC Frank Beauchamp S. Brown Zack 1-2547 QC Larry Rytlewski Zack D. Jones SC-8741 QC Brian Brow J. Karl 1-119 QC Zack Wayne Preston QC Tom Barber QA Zack 1-2356 TS Dale Miller Zack Dave Boyd Zack Electrical Rick Teschner Zack Bob Mack A&M L. B. Woolridge 1-372 Superintendent R. A. Jones 1-3300 Superintendent F. Reed 1-9030 Superintendent R. C. Smith 1-328 . Superintendent P. Hamner 1-389 A. Kohllman Welding Superintendent 1-9022 W. Laptew 1-2789 Welding Supervisor 100% Reinspection
-M. McClemore Lead Field Engineer 1-3351 Lead Field Engineer K. Bandeko 1-1308 Lead Field Engineer PM&S J. Fritsch Superintendent T. Doyle R. Seifert Piping / Mechanical Engineer Electrical Engineer V. Friedrich Electrical Engineer Civil Structural Piping Tom Laird Superintendent Gary Billings Ora Maddix Surveyors Ken Bergman Mike Jubran Engineer r - ,
a g 3 Attachment 16 3rd Shift First Line Sueervisors PM&S Eryan Puckett 0 de
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h LAP 101. 0JF001 Attachment 17A
/82)
CPS TRAINING COMPLETION FOR':
,17 e
Title:
d ofr/ 9 'fW'? '083 - LLb kwhr l $bkb ._ _
- 2. Cour.se Number: [<O _ -
k /2 _ ____ . _ . _ _
- 3. Instructor (s): n -
cro .. .___ _ _ _
- 4. Presentation Date: .. . _ _
- 5. Course Length (Classroom /Other) , 6-- /P.5 / .
- 6. Passing Criteria: // __
COURSE l COL'RSE NAME CRADE . NA!T GRALE hy0f __. I' 1 _Y. Un-- -- - - - . -.f' -- !Y
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- 7. RDARKS/ COMMENTS : _ __ _ __ _ _ __ __. _ _ _ _
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- Nps No. 0AP1017.02F001 Attachment 17B ev. 2) 02-l.3 ( 6/82)
CPS TRAINING COMPLETION FORM
- 1. Course
Title:
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- 2. Course Number: /, O -
9, /2 __
- 3. Instructor (s): Mn [- [/->d _. . _ _ , _
- 4. Presentation Date: /5~5
- 5. Course Length (Classrocm/Other) ,f #3 /
- 6. Passing Criteria: //
COURSE COURSE NAME GRADE NAME GRADE hid? 5/pk Al/N hf Sifh A.I/d'
'"' b oc w P n 73) daub '
5;D & % % % =/2 lbkl u p . b'I M H m / w hY{ j,Rd/ew.sh
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- 7. RDUsRKS/ COMMENTS:
HOW e- W
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CPS tio. 0AP101/.02F001 (Rev. 2) Attachment 17C N102-43 ( 6/82) l CPS TRAINING COMPLETION FORM
- 1. Course Titic: d Ofr/Y' 9 hf'fn osS o _y?_h ktah/ $bkb
- 2. Course Number: /, O -
- 9. /2
- 3. Instructor (s): In [- [ yod
- 4. Presentation Date: -
R!27/7 i
- 5. Course Length (Classroom /Other) ,f #.5 /
- 6. Passing Criteria: ///
COURSE COURSE NAME GRADE NAME- GRADE byOf N&s W/N hin'f hk N/N 8titA A) 6MONMk $ "/A b.N> D$ Y N /T}s1DD)X bu., AUN kY lldb// k ff akc /) ~~i k J C ,w a e r...:!9 G A4 #F5A2112 ' . ^} A .1ka / . d Am bx bbdx).O N/0 SY byb ) VY AfA Jois &ri Y// iv/A Lff? ly Mk f/ s bru ,h6A s/s ')0m d lwd, 'e , iJ A L T l A f*K n / /A.N 5 M AY Y** IneAend flNds444 '/'5 JM. WLew $1 NA RPLicMr i OfA n_ L s Y ia 4 n ta y u 744weL in f ?aul e Ame<_ 0 J u f: ; _ abr m a n dL 4,l/~, ah l
- 7. RD:/dGS/COMMESTS:
**N w -e s eme m> wa &= m-am e+ 6 , mme a 4e on-we+
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