ML19224B082
| ML19224B082 | |
| Person / Time | |
|---|---|
| Site: | Crane  |
| Issue date: | 03/12/1979 |
| From: | Metropolitan Edison Co |
| To: | Mullinix W NRC/IE |
| References | |
| 1676, TM-0099, TM-99, NUDOCS 7906140021 | |
| Download: ML19224B082 (9) | |
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TMI DOCUMENTS
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METROPOLITAN EDISON COMPM7Y.
M Wilda R. Mullinix, NRC
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7906140021 186 014
1676 5
Revision 3 03/12/79 iV AS-ER COPY THREE MILE ISLAND NUCl. EAR STATION STATION HEALTH PHYSICS PROCEDURE 1676 DO N OT RElV OV RADIATION PROTECTION RESPONSIBILITIES FOR PLANNED AND UNPLANNED RELEASES Table of Effective Peges
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Pace Date Revision Paae Date Revision Page Date R evision 1.0 09/30/77 1
26.0 51.0 2.0 09/30/77 1
27.0 52.0 3.0 03/12/79 3
28.0 53.0 4.0 09/30/77 1
29.0 54.0 5.0 03/12/79 3
30.0 55.0 6.0 09/30/77 1
31.0 56.0 7.0 12/28/77 2
32.0 57.0 8.0 05/15/75 0
33.0 58.0 9.0 34.0 59.0 10.0 35.0 60.0 11.0 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 44.0 69.0 20.0 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 Rec me s pproval Unit 2 Staff Reco ende t roval Approval Date Approval Date CejiizanYO4t. liead Cogneant Oer/t. Head Unit 1 PORC R ommends Approval Unit 2 PORC Reco mends Approval Date 3 S!]f
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1676 Revision 1 09/30/77 THREE MILE ISLAND WUCLEAR STATION HEALTH PHYSICS PROCEDURE 1676 Radiation Protection Responsibilities for Planned And Unplanned Releases 1.0 PURPOSE The purpose of this procedure is to provide a method to deal with planned / unplanned releases.
2.0 DISCUSSION In the event that a planned or unplanned release is experienced the shift supervisor or designated alternate will be responsible to implement this procedure.
?!OTE:
This procedure will not be implemented during utilization of H.P.P.1621,1621.2,1622 and or 1622.2 3.1 H.P.P. 1605 3.2 H.P.P. 1606 3.3 H.P.P. 1607 3.4 H.P.P. 1621 3.5 H.P.P. 1622 3.6 H.P.P. 1675 3.7 E.P.1202-12 (Unit #1) 3.8 E.P. 2202-1.7 (Unit #2) 3.9 10 CFR-20 3.10 P.C.P.1958 3.11 H. P.P. 161'
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3.12 H.P. P 1621.2 3.13 H.P.P 1622.2
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18 6 0.16 ~~ ~ ~
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4.0 EQUIPMEN_T_
1.0 1
1676 Revision 1 2
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09/30/77 4.1 Battery operated portable air pump.
4.2 Aluminum Marinelli Beaker or equivalent.
4.3 Radiation Emergency Kit.
4.4 Portable Beta-Gamma Radiation Detection Survey Instrument 4.5 T.L.D. Reader 4.6 Ge Li Detection System 4.7 Beta-Gamma Counter Scaler.
5.0 OPERATING INSTRUCTIONS 5.1 Collection of Air Samoles Inside Buildings 5.2 Control room will notify the Radiation Protection Department of increasing counts or an alert alarm condition on an Unit #1 RMA or HPR, WDG-R, VA-R in Unit #2.
5.3 Radiatioi. Protection initiates log entries and recorda condi-tions and times.
5.4 Radiation Protection Personnel will collect particulate and gas (Marinelli Beaker) sample (s) in the vicinity of the RMA, HPR, WDG-R or VA-R in alarm conditions and at the same time change R.M.A. samples.
Take all samples per H.P.P. 1605, 1606, 1607 and clearly identify all samples.
NOTE:
R.M. A. 2, 5, 7, 8, 9 samples will be collected through the sample panels in Unit #1.
HP-R-222, 225, 226, 227, 228 samples, WDG-R-1480G sample and VA-R-748G sample will be collected locally through the sample panels in Unit #2.
5.5 Notify the control room of all sample changes dealing with the R.M.S.
5.6 Insure that Radiation Protection Supervision has aeen notified.
5.7 Analyze samples per H.P.P. 1605, 1606, 1607 and restrict entry
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186 017 to area (s) in question.
2.0
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Revision 3 03/12/79 NOTE:
If entry is este1tial log che time in and the time out for all individuals going into and out of the area.
All exposures should be logged. All entries will require respiratory protectirn.
5.8 Save all samples collected and those initially counted as further counting of samples may be required.
5.9 If samples indicate a spread of air activity further samples must be taken to determine the extent.
5.10 Continue to log all events as they happen to aid in the recon-struction of the incident after conditions return to normal.
Keep all data together.
5.11 Radiation Protection Personnel will deal with contamination of all individuals involved in the incident per H.P.P.1612 and complete a Contamination / Exposure Report.
5.12 All data is reported to the Control Room so that the Shift Supervisor may complete sections #1 through #11 of a Operations Planned / Unplanned Release Report.
Ref. EP-1202-12/EP-2202-1.7.
5.13 Deleted.
6.0 COLLECTION OF AIR SAMPLES AT SITE SECURITY FENCE 6.1 Upon notification by the Shift Supervisor, or designated alternate, that a High Alarm exists on RMA-8, RMA-9, and or HP-R-219 the following steps will be followed.
6.1.1 Obtain the wind direction from the Shift Supervisoi and the required sample location at the site security fence.
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186.018 3.0
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1676 Revisien 1 09/30/77 6.1.2 Gas Samoles 6.1.2.1 Using the portable air pump connect the aluminum marinelli beaker or equivalent to the intake of the pump.
6.1.2.2 Open both petcocks on the marinelli beaker.
6.1.2.3 Turn on the pump and check the flowrate which should be at a minimum of 4 CFM.
If the flow rate is 4 CFM or greater run the collection far 5 min.
6.1.2.4 After 5 min. turn off the pump and close the petcocks.
6.1.2.5 Disconnect the marinelli beaker from the pump.
6.1.3 Particulate and Iodine Samole 6.1.3.1 Insert the particulate filter and iodine cartridge into the portable air sampler holder.
6.1.3.2 Run the sampler for the time specified on the sampler to collect a. predetermined volume.
6.1.3.3 Turn the pump off and place the indine and particulate samples into envelopes.
6.1.3.4 Mark the Date, Time, Collection Volume and the location of the samples clearly on the outside of the envelope.
6.1.4 Dose Rate Survey 6.1.4.1 Using the Beta-Gamma portable instrument, with the probe window open, perform a Beta-Gamma survey of the sample collection area.
6.1.5 Collection of T.L.D. samples 6.1.5.1 Remove the T.L.D. 's in the immediate area of the release.
4.0 18(r 019 d
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1676,
Revision 3 03/12/79
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6.1.5.2 Return all samples to H.P. Lab for analysis / applicable procedures.
6.2 Report completed data to the control room so that the Shift Supervisor may complete sections 1 through 11 of a Operations Planned / Unplanned Release Report as per E.P. 1202-12.
6.3 Notify Radiation Protection Foreman for completica of Appendix A and incorporation of data in semi annual rerort.
186 020 5.0
1676 3
Revision 1 09/30/77 APPENDIX A CALCULATIONS FOR DETERMINING Q [ MNTRATIONS AND RELEASE RATES DURING PLANNED / UNPLANNED RELEASES 1.
During uncianned releases, the following calculations must be made to fulfill recortina reouirements:
a.
Average Release Rate b.
Maximum Release Rate c.
Total Curies Released d.
24-Hour Average Concentration in the Area e.
Maximum Concentration to Which Personnel Were Exposed (Only if personnel were in the area of the release) f.
Maximum and Average Concentration at Nearest Downwind Unrestricted Area 2.
To calculate the above values, the followino information must be obtained:
a.
RM-A8 HPR-219 Strip Chart covering period of release b.
Isotopic analysis of release (Taken as close to point of release as possible) c.
Air flow.through room (air turnover rate) d.
Air ficw out the unit vent stack (FR-123 or FR-148) e.
Names of personnel involved and time each spent in area of release f.
Meterological data to determine x/Q value 3.
Prior to performit calculations, do the following:
a.
Determine isotopic ratio and weighted MPC
(.10 CFR 20, App. B.
Table II values).
Note-Releasestoday$havebeenpredominately Xe '33 (>90%) with weighted MPC 3x10- pCi/cc.
a b.
Analysis the RM-A8(G) HP-R-219(G) Strip Chart as follows:
MaKe a Table:
Weighted Weighted Point Time CPM Avg. CPM Time Duration CPM Conc.
h@
A B
etc.
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v @) =
186 021-7.
6.0
1676 Revisico 2 12/28/77 (l) and(2) from strip charts for each poi
.3 is average of 2
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from working line and preceeding line.
is(1 in working line minus(l) in preceeding
'ne. ([) throuch wit 1 be blank in first line, point A. )
is equal toO3 xGD GD is GD
- sensitivity of RM-A8(G)7 P-R-219(G).
(If Xe-133 is domina t isotope, sensitivity is 3.7 x 10 CPM /uCi/cc.)
Sum columns 4 and 6 Points A,B,...etc. are picked on the strip charts.
Points should be picked whenever a change in the slope of RM-A8(G) HP-R-219(G) response is noted.
The more points chosen, the better the calcula-tions will be.
4.
Calculations:
a.
Average Release Rate f
-6 3
I 6 / r 4 (uCi/cc) x flow out the stack (cc/sec) x 10 m /cc Weignted MPCa (uCi/cc) 3
= Avg. RR (m /sec) b.
Maximum Release Rate Max. CPM from chart (CPM) x flow out the stack (cc/sec) x 10~0 (m 3/cc)
Sensitivity (CPM /uCi/cc) x Weighted MPCa (uCi/cc) 3
= Max. RR (m /sec) c.
Total Curies Released 6 juCi/cc. min) x flow out the stack (cc/sec) x 60 sec/ min x 10 Ci/uCi
= Total Release (Ci) d.
24 Hour Average Concentration in the Area
- b Total Release (Ci) x 10 uCi/ci Flow thru room (CFM) x 24 hours2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br /> x 60 min /hr x 2,832 x 10'cc 3
ft
= 24 Hour Average Concentration (uC'/:c) e.
Maximum Concentration Personael Exposed To 24 Hour Averace Concentration (uCi/cc) x 24 Hr x 60 min /Hr x MaxRelease Rate I 4 (min) x Average R.R.
= Maximum Concentration in Room (uCi/cc) r 186~022
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05/15/7a
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6PP' 1676 Revision 0
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f.
Average Concentration at Nearest Unrestricted Area _
I($)/ I([)(uCi/cc) x flow out the stack (cc/sec) x X/Q (sec/m ) x 10 6 3
(m/cc) 3
= uCi/cc (Average Concentration at nearest unrestricted area)
Maximum Concentration at Near est Unrestricted Area Max. readino from chart (CPM) x flow out the stack (cc/sec) x X/0 (sec/m3)
Sensitivity (CPM /uCi/cc) x 10 (cc/m )
a
= pCi/cc (Maximum Concentration at nearest unrestricted area) 5.
Limits:
a.
Average Release Rate N/A b.
Maximum Release Rate 1.2 x 10s m /sec (Tech. Spec.)
3 c.
Total Curies Released N/A d.
24 Hour Averace Concentration 500 x MPCa (weighted) 10 CFR 20.403 (b)
(2) 5000 x MPCa (weighted) 10 CFR 20.403 (a)
(2) e.
Maximum Personnel Excosure MPCa (weichted) (10 CFR 20, Accendix B, Table I) x 40 hr x 60 min /hr Time individual was in area (min) f.
Concentration at Nearest Unrestricted Area 10 CFR 20, Appendix B, Table II (Weighted MPCa)
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