ML20033B229
| ML20033B229 | |
| Person / Time | |
|---|---|
| Site: | Trojan File:Portland General Electric icon.png |
| Issue date: | 10/21/1981 |
| From: | PORTLAND GENERAL ELECTRIC CO. |
| To: | |
| Shared Package | |
| ML20033B227 | List: |
| References | |
| PROC-811021-01, NUDOCS 8112010073 | |
| Download: ML20033B229 (19) | |
Text
_
TROJAN NUCLEAR PLANT v
PLANT OPERATING MANUAL RADIOLOGICAL EMERGENCY RESPONSE PLAN IMPLEMENTING PROCEDURES Volume 4. Sention III TABLE OF CONTENTS Procedure Title Date
- EP-1 Unusual Event 08/04/81
- EP-2 Emergency Alert 08/04/81
- EP-3 Site Emergency 08/04/81
- EP-4 General Emergency 08/04/81
- EP-5 Emergency Notification 08/04/81
- EP-6 Command Classification 12/15/80
]
- EP-7 Operation of the Technical Support Center 08/04/81
- EP-8 Operation of Emergency Control Center 02/26/81
- EP-8.2 Security Director 12/12/80
- EP-8.3 Public Information Representative 12/12/80 EP-8.4 Technical Support Center Communicator 12/12/80
- EP-8.5 General Communicator 12/12/80
- EP-8.6 Communications Staff 12/12/80
- EP-8.9 UDAC Radio Communicator 12/12/80
- EP-8.10 UDAC General Communicator 12/12/80
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- Safety Related Page 1 of 3
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10/21/31 8112010073 811113 PDR ADOCK 05000344 PDR
'N Procedure Title Date
- EP-R.13 Office Director 12/12/80
- EP-8.15 VIC Staff 12/12/80
- EP-8.16 Security Staff 12/12/80
- EP-8.17 Radiation Protection Pield Team 12/12/80
- EP-9 Operation of the Operational Support Center 12/09/80
- EP-10 Accident Dose Assessment Work Sheet Method 02/24/81
- EP-10.1 Accident Dose Assessment Computer Analysis Method Deleted
- EP-10.2 Instructions for Use of Computer Terminal 02/12/81
- EP-10.3 Use of the Subin C'omputer Code 04/14/81
- EP-10.4 Use of the Ingest Computer Code 02/12/81 s _,/
s
- EP-10.5 Use of the Liquid Computer code 02/12/81
- EP-11 Onsite Radiological Surveys 12/10/80
- -EP-12 Offsite Radiological Surveys 04/23/81
- EP-13 Personnel Monitoring and Decontamination 12/10/80 l
- EP-14 Potassium Iodide (KI) Administration 10/21/81
- EP-15 Emergency Supply List 09/18/81
- EP-16 Drills and Exercises 04/14/81
- EP-17 Medical 07/20/81
- EP Fire Fighting 10/21/81
- EP-19 Communications 02/06/81
- EP-19.1 Operation of Ground Radio System 12/19/80 Page 2 of 3 O
- Safety Related 10/21/81
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Procedure Title Date
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- EP-19.2 Operation of Dedicated Telephone System.
02/09/81
- EP-19.3 Operation of Trojan Commercial Phone System 12/19/80
- EP-19.5 Health Physics Network (HPN) 12/19/80
- EP-19.6 Operation of Aerial Radio System (ARS) 12/19/80
- EP-20 Site Security 09/18/81
- EP-21 Reentry / Search and Rescue 12/10/80
- EP-22 Public Relations Department 10/13/81
- EP-23 Control Room Protective.setion Recommendations 12/09/80
- EP-25 Operation of Company Support Center 02/25/81
- EP-25.1 Company Support Center Director 02/25/81
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- EP-25.2 Public Information Advisor 12/24/80
- EP-25.3 Environmental Sciences Advisor 12/24/80
- EP-25.4 Legal Advisor 12/24/80
- EP-25.5 Insurance Advisor 12/24/80
- EP-25.6 Communications Advisor 12/24/80
- EP-25.9 General Communicator 12/24/80
- EP-26 Medical Health Physicist 12/09/80
- EP-27 Headquarters Training 12/24/80
- EP-28 Onsite Training 04/21/81
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- Safety-Related Page 3 of 3 10/21/81
UPDATED
'i,lAINTA!HED BY CUPY liOI. DER
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RADIOLOGICAL EMERGENCY RESPONSE PLAN IMPLEMENTING PROCEDURE EP-29 SAFETY-RELATED EOF OFFSITE DOSE ASSESSMENT COMPUTER ~ ANALYSIS METHOD
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Approved by I
Date A.
PURPOSE The purpose of this procedure is to describe offsite dose assessment using computer analysis. This procedure is to be followed whenever the Emergency Operations Facility (EOF) Dose Assessment computer terminal is available and functioning.
B.
DESCRIPTION OF FACILITY AND COMPUTER CODES 1.
Computer Facility The EOF Dose Assessment computer facility consists of a hard-copy computer terminal connected to a dedicated telephone line 1n the Dose Assessment Area of the EOF (see EP-8).
Instruc-tions for connecting and operating the terminal are given in Procedure EP-29.1.
2.
Computer Codes a
Three computer codes are available for offsite dose assessment at the EOF. These are:
a.
SUBIN - Calculates external whole body, skin and inhalation thyroid doses using either Plant effluent data or field monitoring data.
b.
INGEST - Calculates ingestion pathways doses using either t
j Plant effluent data or field monitoring data.
c.
LIQUID - Calculates liquid pathways doses using Plant effluent data.
The computer codes are totally interactive and prompt the user for all required input data. Procedure EP 29.1 lists instruc-tions for logging on the computer system and running the computer codes. Procedures EP 29.2, 29.3 and 29.4 describe the operation of the SUBIN, INGEST and LIQUID codes respectively.
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C.
INITIATION OF DOSE ASSESSMEhT
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An offsita dose asseesment will be performed under any of th9 following emergency conditions (as determined by the Technical Support Center {TSC]):
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EP-29 Page 1 of 16 Revision 0 l
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[
I 1.
Noble gas PRM readings or analysis of effluunt samples indicate effluent release rates '(noble gas or iodine) exceeding 10 times the Technical Specification limits, persisting for longer than 15 min.
l 2.
Containment ARM readings or dose rates measured outside Contain-ment indicate greater than 1 percent core gap activity release to the containment atmosphere, and containment pressure is greater than' 5 psig.
3.
An Alert, Site Area Emergency, or General Emergency has been declared, and radioactive effluent has been released to the environment through an unmonitored pathway, or the radioactive effluent release is through a pathway with a malfunctioning PRM.
D.
DETERMINATION OF RADIOACTIVE MATERIAL RELEASE RATES 1.
The Dose Assessament Staff Recorder / Communicator obtains radio-active material release data and meteorological data from the TSC, and.other plant status data from the EOF status boards.
a.
For gaseous releases, enter on Form 29A:
(1) PRM net count rate [PRM-lC, -lD, -lE, -2C, -2D, l
-6A, -6B, or -6C (cpm)] plus effluent stream flow rate (cfa).
g (2) Gross noble gas and/or. iodine effluent concentra-tion (pC1/cc) plus effluent stream flow rate (cfm).
i pR (3) Containment ARM reading ( ARM-15A, -15B, -20 or -6) plus containment pressure (psig) plus containment spray system (CSS) status (operating or not operating).
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(4) Gamma exposure rate (R/hr) outside Containment at contact or 50 ft, plus contninment pressure l
(psig), plus CSS s tatus.
!l' OR i
I (5) Gasna exposure rate (mR/hr) at downwind Exclusion i
Area Boundary (EAB) plus containment PRM or ARM l
reading.
I OR a
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EP-29 Page 2 of 16 l
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(6) Isotopic analysis of effluent grab sample ( C1/cc)
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plus effluent stream flow rate (cfm). Enter on Form 293 in addition to Form 29A.
AND (7) Estimated release duration (hr).
If not known, use default value (3 hr).
b.
For liquid releases, enter on Form 29C:
(1) Isotopic concentrations of nuclides in liquid effluent.
AND 1
(2) Effluent stream flow rate (gpm) and estimated release duration (hr).
If not known, use default value (3 hr).
0, R (3) Total batch release (gal).
2.
If effluent stream flow rate is not known, use default values listed in Table 29-2.
3.
If an unmonitored release from the Containment has occurred, go fj to Emergency Procedure EP-10 and use Form 10C to calculate
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release rates. Enter the calculated release rates on Form 29A and prcreed with SUBIN and/or INGEST assessment.
4.
When field monitoring team data becomes available, record on i
Form 29A and use as input to SUBIN and/or INGEST.
5.
Water sample analysis results can be used as input to LIQUID to calculate dose rates from water consumption.
E.
METEOROLOGICAL DATA 1.
Record the following meteorological data on Form 29A as relayed from the TSC:
Wind direction (both toward and from which wind is blowing).
a.
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b.
Wind speed (mph).
c.
Stability data: primary - aT (200-33) (*C) backup - 00 (*)
2.
If meteorological instrumentation is not functional, estimate data as follows:
a.
Wind speed: Obtain from instrumentation mounted on wind generator tower outside the EOF.
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EP-29 Page 3 of 16 Revision 0 L
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b.
Wind direction: Estimate from wind vane mounted on wind
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generator tower.
c.
Stability class: -Estimate using wind speed and Table 29-5; convert to ar (*C) by using Table 29-6.
d.
Inform the EOF Director to request the PGE Load Dispatcher to contact the National Weather Service, Portland office, and obtain the following information for the Trojan area:
(1) Low-level wind speed and direction.
(2) Stability cl' ass.
3.
Record the form of precipitation, if known.
F.
DOSE CALCULATIONS 1.
The Computer Operator performs dose calculations using the data recorded on Form 29A as input with the appropriate computer code.
Use short output options for initial calculations to obtain rapid summary reports.
NOTE:
If radioactive material release data is received for more than one release pathway (eg, air ejector plus steam generator PORV), separate dose calculations fs should be made for each pathway and the results
(
added together.
2.
Perform initial SUBIN calculations at the Exclusion Area Boundary (EAB), 2.5 mi, 5.0 mi and 10.0 mi.
SUBIN calculates the downwind.
distances (if any) at which Protective Action Guide doses are exceeded and the times allowed to evacuate the population at these distances. SUBIN also calculates plume widths at the specified distances.
a.
If the decision has been made by the State or county EOCs to shelter some portions (or all) of the population in the plume EPZ,.use the structure shielding factor option in SUBIN l
calculations (see EP-29.2).
This will allow the effect of sheltering on radistion doses to be taken into account in subsequent protecive action recommendations.
b.
Use the allowable evacuation times at the EAB, 2.5 mi and 5.0 mi to recommend protective actions (see Procedure EP-30).
NOTE: SUBIN and INGEST calculate only plume centerline doses. Dose projections using these codes should be i
regarded as conservative estimates only; field moni-toring results should be relied on as much as possible l
to determine and refine protective action decisions.
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EP-29 Page 4 of 16 Revision 0
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3.
Record the results and appropriate parameters on the Accident
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Assessment Report Form (Table 8-2 of EP-8).
Attach code outputs s
to report form or retain as permanent record.
4.
Post dose calculation results on the EOF Dose Assessment Area status boards (See Procedure EP-8).
Plot dose results and plume dimensions on 2.5, 10- or 50-mile map, as appropriate.
5.
See Procedure EP-19 for communications instructions.
6.
See ?rocedure Er-30 for protective action recommendations.
Record ' recommendations on the Accident Assessment Report Form (Table 8-2 of EP-8).
Plot areas recommended for shelter and/or evacuation on 10 mile map.
7.
Pass dose assessment results and protective action recommenda-tions (Accident Assessment Report, Table 8-2 ~of EP-8) through the Dose Assessment Director to the EOF Director (the Radiological Manager upon his arrival at the EOF) for communication to and approval by the Emergency Coordinator (Emergency Response Manager) and transmission to offsite agencies.
G.
UPDATING OF DOSE ASSESSMENTS l.
Update dose assessment calculations if any of the following parameters change significantly (20 percent or more for numeri-
'~'
cal parameters):
V a.
PRM reading.
b.
Containment radiation level.
c.
Measured effluent flow rate.
d.
Containment pressure.
e.
Containment Spray System (operational status).
f.
Wind speed.
g.
Wind direction (sector change).
J h.
Temperature difference (or sigma).
[.
1.
Estimated duration of release.
2.
Obtain frequent updates of the above parameters from the TSC.
3.
Update dose assessments upon receipt,of new or revis"ed results of grab sample analysis, or upon receipt 'of significant new or revised information from field monitoring teams.
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EP-29?.Page 5 of 16 Revision ~0 N
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H.
OTHER COMPUTER CALCULATIONS V
1.
In addition to the three computer codes described in this pro-cedure, the computer resources of the PGE Headquarters Radio-logical Engineering Branch (REB) are also accessible from the EOF.
2.
Members of the REB will be dispatched by the Company. Support Center to relieve Plant personnel in the EOF dose assessment area. The REB personnel are capable of accessing and running the REB computer codes as needed by the EOF, including calculating population dose commitments.
I.
USE OF LABORATORY DATA 1.
Laboratory analysis results of environmental samples taken by field teams are reported to the EOF by ground or aerial radio intercom or by telephone and recorded on Form 29D.
2.
The laboratory data may include analysis of air sampler car-tridges and filters, vegetation, milk, water or soil samples, or TLDs.
3.
Environmental TLD data are reported in units of mR of ' exposure over a time period. The average mR/hr calculated from these values can be used in SUBIN. The total dose value can be used in population dose calculations. Figure 2:7.3-1, Chapter 2 of the
(
Trojan Radiological Emergency Plan, shows the locations of fixed TLD and air sampler locations used for routine environmental monitoring.
4.
Air sampler analysis results can be used in SUBIN.
5.
Environmental sample results can be used in INGEST or LIQUID.
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EP-29 Page 6 of 16 Revision 0
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TABLE 29-1 s
PRM CALIBRATION FACTORS Calibration Factor PRM Name PRM Number
(cpm /uC1/cc)
Containment low-level noble gas PRM-lC 3.5E+7 Containment intermediate-level PRM-lD 4.0E+3 noble. gas containment high-level noble gas PRM-lE
[a]
Auxiliaty Building low-level PRM-2C 3.5E+7 noble gas Auxiliary Building intermediate-PRM-2D 4.0E+3
..wyel noble gas Air ejector low-level noble gas PRM-6A 3.5E+7 I
Air ejector intermediate-level PRM-6B 4.02+3 noble gas Air ejector high-level noble gas PRM-6C
[a]
9
[a] Not installed.
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EP-29 Page 7 of 16 Revision 0
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i TABLE 29-2 ARM DETECTOR LOCATIONS 1
Number Location f
ARM-6 Containment, 61-ft elevation, near in-core neutron detector instrumentation 4
ARM-15A, Containment (high-range)
ARM-15B i
I ARM-20 Containment manipulator crane, 93-f t elevation i
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4 I
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TABLE 29-3 DEFAULT VALUES FOR EFFLUENT FLOW RATES Pathway Default Flow Rate (cfm)I*l Containment Purge 5.0E+4 Auxiliary Building Ventilation 1.lE+5 System Air Ejector 6.0E+1 Steam Generator Power 0 erated 1.4E+5 Relief Valves (PORVs)I Steam Generator Safety Valves [b]
1.4E+6
[a] Based on maximum design flow rate.
[b] All valves. Assume all valves are open.
EP-29 Page 9 of 16 Revision 0
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TABLE 29-4 DISTANCES FROM CONTAllNENT TO EXCLUSION AREA BOUNDARY Distance to Exclusion Wind Wind Area Boundary From Degrees Toward (meters)
(miles)
N 348.75 - 11.25 5
1.3E+3 0.81 Nht 11.25 -
33~. 75 SSW 1.2E+3 0.75 hI 33.75 - 56.25 SW 1.3E+3 0.81 ENE 56.25 - 78.75 WSW 1.4E+3 0.87 J
E 78.75 - 101.25 W
9.5E+2 0.59 ESE 101.25 - 123.75 Whv 1.0E+3 0.62 SE 123.75 - 146.25 hv 8.1E+2 0.50 SSE 146.25 - 168.75 NNW 6.7E+2 0.42 s
S 168.75 - 191.25 N
6.6E+2 0.41 SSW 191.25 - 213.75 NNE 6.8E+2 0.42 SW 213.75 - 236.25 NE 8.2E+2 0.51 WSW 236.25 - 258.75 ENE 6.9E+2 0.43 W
258.75 - 281.25 E
6.8E+2 0.42 WIN 281.25 - 303.75 ESE 8.1E+2 0.50 hv 303.75 - 326.25 SE 1.0E+3 0.62 IM 326.25 - 348.75 SSE 1.6E+3 0.99 O
EP-29 Page 10 of 16 Revision 0
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1 TABLE 29-5 1
DEFAULT VALUES FOR STABILITY CLASS [aj i
Wind Speed Pasquill Stability Class (mph)
(m/sec)
Daytime Nighttime
<4.5
<2 B
G 4.5-8.9 2-4 C
F 8.9-13.4 4-6 C
E
>13.4
>6 D
D
[a] Reference - Meteorology and Atomic Energy 1968, Table 3.3, U. S. Atomic Energy Commission, 1968.
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TABLE 29-6 s
ATMOSPHERIC STABILITY CATEGORIES f
f Pasquill Stability 00 AT Classification Category (degree)
(*C) i Extremely unstable A
>22.5
<-0.96 Moderately unstable B
22.5 to 17.5
-0.96 to -0.86 Slightly unstable C
17.5 to 12.5
-0.86 to -0.76 Neutral D
12.5 to 7.5
-0.76 to -0.25 Slightly stable E
7.5 to 3.8
-0.25 to 0.76 Moderately stable F
3.8 to 2.1 0.76 to 2.0 Extremely stable G
<2.1
>2.0 s
h EP-29 Page 12 of 16 Revision 0
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o FORM 29A l
DOSE ASSESSMENT DATA RECORD Sheet No.
ATHOSPilERIC RELEASE Containment PRM lbble Gas lodine Con-Spray Time Calibration Concen-Concen-Effluent tainmeat System (24-llr PRM PRM Factor ARM ARM tration[a] tration[a] Flow RateIDI Pressure (CSS) l Date Clock)
No.
cpm (Table 29-1)
No.
R/hr (pCi/cc)
(pC1/cc)
(cfm)
(psig)
Status 9
l 1
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Contaisunent Exposure Rate Estimated Stability Contact /
EAB EAB Release Data 50 Ft DoserateICI DistanceId}
Duration Windspeed Wind Direction [e]
AT 00 5
(R/hr)
(mR/hr)
(miles)
(br)
(mph)
From Towa rd
(*C)
(*)
Other Data s
1 I
t i
j Distanceldi 1-131 gg Field Location From Dose Rates Concen-44 Team Grid Containment Altitude Gamma Gamma + Beta tration[g) 4 mo Name Maplfl Coordinates (miles)
(ft)
(mR/hr)
(mR/hr)
(pCi/cc)
Comments o
1 oa L
q C
8,
[a] 1sotopic analysis data recorded on Form 298.
[d] To be determined at the EOF.
[b] See Table 29-3 for default values.
[e] Give as one of the 16 cardinal compass directions
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[c] Single measurement to determine release rate; (N, NNE, etc.).
not field monitoring team data.
[f] 2.5, 10- or 50-mile grid map.
[g] Initial field team measurement only. Laboratory results go on Form 29D.
l.
S ma'
i FORM 29B Date GRAB SAMPLE DATA RECORD Time J
ATMOSPHERIC RELEASE 3heet No.
A.
Ef fluent Streamflow Rate *I I
cfm h E
=
k hr h B.
Estimated Release Duration
=
t i
C.
Effluent Concentrations:
Concentration h Number Isotope (uCi/cc) 1 1-131 2
1-132 3
I-133 4
I-134 5
I-135 6
Kr-83m 7
Kr-85 8
Kr-85m 9
Kr-87 10 Kr-88 11 Kr-89 12 Kr-90 13 Xe-131m 14 Xe-133 15 Xe-133m 16 Xe-135 17 Xe-135m 18 Xe-137 19 Xe-138 20 Xe-139 Enter values h, h and h into SUBIN or INCEST (iodines only).
D.
[a] For default values, see Tabte 29-3.
[b] Default - 3 hr.
EP-29 Page 14 of 16 l
Revision 0
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FORM 29C Date i
GRAB SAMPLE DATA RECORD Time LIQUID RELEASE Sheet No.
gpm h A.
Effitant Release Rate E
Total Release (batch release only) gal h B.
Estimated Duration of Release *l hr I
h C.
thclide Concentrations:
Concentration h Number Isotope (uCi/cc) 1 H-3 2
Cr-51 3
Mn-54 4
Ma-56 5
Co-58 6
Co-60 7
Fe-59 8
Zn-65 9
Sr-39 10 Sr-90 11 Zr-95 12 Mo-99 13 Ru-103 14 Ru-106 15 I-131 16 I-132 17 I-133 18 I-134 19 I-135 20 Cs-134 21 Cs-137 22 Ba-140 23 Ce-141 24 Ce-144 Enter h, h or h and h into LIQUID.
D.
j (a] Default = 3 hr.
EP-29 Page 15 of 16 Revision 0
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FORM 29D Date 4
1ABORATORY DATA kECORD Sheet No.
]
Sample Location Laboratory Results 1
3 Sample Date/ Time Grid Record correct units (eg, pCi/cc, pCi/m, pCi/1, pC1/kg) l Type [a]
Sample Taken Maplbl Coordinates I-131 1-133 Cs-134 Cs-137 Sr-89, 90 Other (specify)
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[a] eg:
soil, vegetation, milk,mir sampler cartridge, air sampler filter.
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[b] 2.5, 10- or 50-mile grid map.
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