ML19224B261
| ML19224B261 | |
| Person / Time | |
|---|---|
| Site: | Crane  |
| Issue date: | 06/17/1977 |
| From: | Metropolitan Edison Co |
| To: | Mullinix W NRC/IE |
| References | |
| 1641, TM-0092, TM-92, NUDOCS 7906140308 | |
| Download: ML19224B261 (12) | |
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Wilda R. Mullinix, NRC 79061403ce i
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1641 Revision 1
06/17/77
, (h THREE MILE ISLAND NUCLEAR STATION STATION HEALTH PHYSICS PROCEDURE 1641 y
SELF-READING DOSIMETER USAGE AND RECORD KEEPING Table of Effective Pages Paae Date R evision Pace Date R evision Paae Date R evision 1.0 06/17/77 1
26.0 51.0 2.0 04/11/77 0
27.0 52.0 3.0 04/11/77 0
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34.0 59.0 10.0 04/11/77 0
35.0 60.0 11.0 04/11/77 0
36.0 61.0 12.0 37.0 62.0 13.0 38.0 63.0 14.0 39.0 64.0 15.0 40.0 65.0 16.0 41.0 66.0 17.0 42.0 67.0 18.0 43.0 68.0 19.0 20.0 44.0 69.0 45.0 70.0 21.0 46.0 71.0 22.0 47.0 72.0 23.0 48.0 73.0 24.0 49.0 74.0 25.0 50.0 75.0 Unit 1 Staff Recommends pproval Unit 2 Staff Reco me s pproval Approval Date Approval Date Cognizaft M.%-
Cog [iza$pt. head Unit 1 PORC Recommends Approval Unit 2 PORC Recommends Approval f
Date fo //2l9 *7 0
Date bl U
gChairman of PORC p[66 / Chair an of PORC PORC comments of
- included PORC comments of
- included
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(date)
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By Date Appro0 f f
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Station Superinteriderit//
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Unit Superintendent
1641 Revisior. 1 06/17/77 THREE MILE ISLAND NUCLEAR STATION STATION HEALTH PHYSICS PROCEDURE 1541 Self-Reader Dosimeter Usage and Record Keeping 1.0 PURPOSE 1.1 The purpose of this procedure is to explain the method used "or dcsimeter radiation exposure record keeping for personnel at Three Mile Island (TMI).
2.0 DISCUSSION 2.1 Self Reading Dosimeters are pencil shaped ior.ization chambers that are calibrated to discharge at a predictat'se rate when exposed to gamma or neutron radiation.
2.2 This method of exposure detarmination is useful for daily radiation exposure record keeping.
3.0 REFERENCES
3.1 W.B. Johnson Dosimeter Manual 3.2 TMI Radiation Protection Manual - AP 1003 3.3 General Public Utilities Radiation Exposure Monitoring Procedure Manual (Self-Reader Dosimetry - TMI) 3.4 HPP 1772u 4.0 EQUIP.NENT 4.1 Dosimeters 4.2 Log Sheets (Form 1641-1,1641-2) 4.3 Dosimeter Charger 5.0 OPERATING PROCEDURES h
5.1 Self-Reading Dosimeter Issue l.0
/'S 097
1641 Revision 0 04/11/77 5.1.1 Self-reading dosimeters will be charged as per H.P.P. 1772.
5.1.2 Self-reading dosimeters will be issued to all personnel entering the Controiled Area at the Access Control Point.
5.2 Self Reading Neutron Dosimeter and High Range Dosimeters 5.2.1 The self reading neutron and high range dosimeter (s) will be worn betwe'n the neck and waist lines.
These will be issued tt
, ut the discretion of Radiation Protection Supervision.
5.2.2 To read the dosimeter, point it at a source of light and observe the position of the image of the quartz fiber on the scale.
(See Figure 1615-1) 5.3 Self Reading Low Range Gamma Dosimeter 5.3.1 The self readirq low range gamma dosimeter will be worn between the neck and waistlines.
On occasion additional dosimeters may be worn where exposures are expected to be greatest.
5.3.2 A self reading low range gamma dosimeter, 0-200 MR range, will be issued to all plant personnel working in radiation areas.
5.3.3 To read the dosimeter, point it at a source of light and observe the position of the image of the quartz fiber on the scale.
(See Figure 1641-1) 5.3.4 In the event a dosimeter would be dropped, lost or reads off scale, it must be immediately reported to r diation Protection a
Personnel who will complete Sections A, C and D cf the Contam-ination/ Exposure Report (Form 1612-1).
5.4 Rezero of Dosimeters I
5.4.1 Insert the base of the dosimeter in the socket located on the top of the dosimeter charger and press down on the dosimeter firmly and observe the position of the hairline crossing T
vertically through the horizontal scale.
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2.0 H
1641 Revision 0 04/11/77
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5.4.2 While observing the hairline, rotate the potentiometer to position the hairline to zero.
5.4.3 Remove the dosimeter from the socket and observe the dosimeter reading to verify that the hairline is on zero.
5.4.4 If the dosimeter hairli.
is not on zero repeat steps 5.4.1 through 5.4.3.
5.5 Permanent TMI Personnel Dosimeter Radiation Exposure Record Keeping 5.5.1 Each permanent employee will have a " Daily Self-Reader Exposure Form" (Form 1641-1) on file, located at the Access Control Point.
5.5.2 Locate your " Daily Self-Reader Dosimeter Exposure Form" (Form 1641-1).
NOTE:
The forms are listed in alphabetical order, by
. department.
5.5.3 Locate the appropriate " MONTH, DAY, YEAR" Column @ and log your current dosimeter reading under the " READ-IN" Column @.
5.5.4 Upon exiting the Controlled Area, enter your dosimeter reading under the " READ-0UT" Column @.
5.5.5 Enter the difference between the " READ-IN" and " READ-0UT" dosimeter readings, @ - @ under the " DIFFERENCE" Column @.
NOTE:
Space is provided on Form 1641-1 for six (6) entries for each day, corresponding to an individual entering and exiting the controlled area six (6) times in one day.
If more than six (6) entries are made to the controlled area in one day, the additional entries 3.0 195
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099
4 1641 Revision 0 04/11/77 will be documented on a "BLAtlK SELF-READER EXPOSURE FORM", Forrr 1641-2.
Form 1641-2 may be obtained at the Access Control Point.
5.5.6 Upon exiting the Controlled Area for the final time that day, enter the sum of the " DIFFER 2ftCE" @ readings in the " DAILY TOTAL" Column @.
5.6 TMI Visitors Dosimeter Radiation Exposure Record Keeping 5.6.1 Upon entering the controlled area a visitor will be issued a "Bl.Af4K SELF-READER EXPOSURE FORM", Form 1641-2.
5.6.2 A Rad. Chem. Tech./Jr. or other suitably qualified personnel, will enter the visitors " SOCIAL SECURITY fiUMBER" in Section @
and name, last name first, in Section @ of Form 1641-2.
5.6.3 Place the form in alphabetical order in the " VISITORS SELF-READIf1G DOSIMETER EXPOSURE LOG" located at the Access Control Point.
5.6.4 Enter the appropriate "M0flTH, DAY, YEAR" in @ and log your current dosimeter reading under the " READ-Iti" Column @ of Form 1641-2.
5.6.5 Upon exiting the controlled area, erter your dosimeter reading under the " READ-0UT" Column @ Forn 1641-2.
5.6.6 Enter the difference between the " READ-Iti" and " READ-0UT",
@ - @, under the difference Column @, Form 1641-2.
5.6.7 Upon exiting the Controlled Area for the final time that day, enter the sum of the "DIFFEREfiCE" @ readings in the " DAILY
-[.
TOTAL" Column (Z) f40TE:
At the conclusion of th'e report period, (Weekly and Daily) the " DAILY SELF-READER DOSIMETER EXPOSURE --
?$ j00
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4.0
1641 Revision 0 04/11/77 FORMS" (Forms 1641-1,1641-2) will be reviewed, approved and submitted for computer entry by a Radiation Protection Supervisor / Foreman.
5.7 Radiation Exposure Monitoring System Report Listings The data from the " DAILY SELF-READER DOSIMETER EXPOSURE FORMS" (Forms 1641-1,1641-2) will be summarized and distributed in the form of a "SELF-READER DOSIMETER EXPOSURE REPORT LISTING" (Form 1641-3).
Form 1641-3 will be distributed on a weekly basis or as determined by the Radiation Protection Supervisor.
A form 1641-3 will be distributed to each department including the names of departmental personnel in alphabetical order, daily exposures, exposures for the period covered by Form 1641-1, monthly accumulated exposure, and quarterly accumulated exposure.
NOTE:
A master list of the "SELF-READER DOSIMETER EXPOSURE REPORT LISTING 5" for all departments will be maintained at the Access Control Point and in the Radiation Protection office area.
The report will be used as a reference to determine current exposure levels for an individual and to assist in work assignments of personnel, based on individual exposure levels.
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DAILY SR COSI;iETER EXFOSURES
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/.M T'.'P llM C/5/L 512510 50C SEC 21120:050 %;0ER50!; JOH1 W Rgygop,;40 04/11/77 g
PERIOD Ei:DI':G 12/15/75 QTR TOT 200 AS OF 12/16/75 REA Ili READ GUT DIFF 2:;CE READ-Irl READ-00T DIFFERE:CE
'2/09/75 LLLLI LLLLI CLLLI LLLLI LLLLI LLLLI LLLLI LLLLI LLLLI LLLLI LLLLI LLLLI
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LLLLI LLLLI LLLLI LLLLI LLLLI LLLLI O DAILY-TOTAL L L L L I L2/10/75 LLLLI LLLLI LLLLI LLLLI LLLLT LLLLI
.L L L L I LLLLI LLLLI
,LLLLI LLLLI LLLLI LLLLI LLLLI LLLLI LLLLI LLLLI LLLLI DAILY-TOTAL L L L L I 12/11/75 LLLLI LLLLI LLLLI LLLLI LLLLI LLLLI LLLLI" LLLLI LLLLI LLLLI LLLLI LLLLI LLLLI LLLLI LLLLI LLLLI LLLLI LLLLI DAILY-TOTAL L L L L I 12/12/75 LLLLI L L L L'I-LLLLI LLLLI LLLLI LLLLI LLLLI LLLLI LLLLI LLLLI LLLLI LLLLI LLLLI LLLLI LLLLI LLLLI LLLLI LLLLI DAILY-TOTAL L L L L I 12/13/75 LLLLI LLLLI LLLLI LLLLI LLLLI LLLLI L'L L L I LLLLI LLLLI L L L,t; I LLLLI LLLLI LLLLI LLLLI LLLLI L L L;L I LLLLI LLLLI DAILY-TOTAL L L L L-I 12/14/75 LLLLI LLLLI LLLLI LLLLI
'L'.L L L I LLLLI LLLLI LLLLI LLLLI LLLLI L L L'l I LLLLI LLLLI LLLLI LLLLI LLLLI L L' L' L' I LLLLI DAILY-TOTAL L L L L I 5/75 LLLLI LLLLI LLLLI LLLL1 LLLLI LLLLI d@j l
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I 2 L*L' l L I LLLLI LLLLI LLLLI L L L'l I LLLL FORM 1641-1 6.0 DAILY-TOTAL L L L L I A!!DEP.50.*: J'l DEPT ~f?:
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Revision 0 04/11/77 MILL; REM O
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1641 Revision 0 CONTAMIrlATION/ EXPOSURE REPORT 04/11/77 LOSS OF PERS0tlAL DOSIMETRY PERSONhEL C0tlTAMIrlATI0tl flame Company SS#
Date Time Address (If not Met-Ed)
A.
LOSS OF PERSONAL DOSIMETRY Section 1 - Film Badge /TLD 1.
Date Issued Date Lost 2.
Dosimeter reading covering lost Film Badge /TLD period mrem 3.
Reading entered on individuals Radiation Record:
Yes No 4.
Individual restricted from controlled area:
Yes No Section 2 - Self Reading 00simeter 1.
Dosimeter Lost Dosimeter Off Scale Date 2.
Film Badge /TLD Evaluated:
mrem 3.
Film Badge /TLD Reissued: Yes tio 4.
Individual restricted from controlled areas:
Yes No B.
PERSONNEL CONTAMINATION:
1.
Contaminated Body Areas Survey Results Highest DPM e
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FORM 1612-1 10.0
1641 Revision 0 B.
PERSONNEL CONTAMINATION:
(Cont'd) 04/11/77 2.
Method of Decontamination:
3.
Decontaminated Body Areas Survey Results Highest DPM 4.
Sample for Urine Bio Collected:
Yes No 5.
Individual sent for Whole Body Count:
Yes No______
C.
INVESTIGATION REPORT:
(Include R.W.P. #)
Form Completed By:
D.
RESULTS OF INVESTIGATION:
(Completed by Radiation Protection Supervisor / Foreman)
Approved By RP Supv/ Foreman
,.I cc:
F. H. Grice
'J. G. Herbein Department Head ----
'1 9 5 1 0,7
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