ML20215F362
| ML20215F362 | |
| Person / Time | |
|---|---|
| Site: | South Texas  |
| Issue date: | 09/22/1986 |
| From: | Kinsey W HOUSTON LIGHTING & POWER CO. |
| To: | |
| Shared Package | |
| ML20215F286 | List: |
| References | |
| RTR-NUREG-0737, RTR-NUREG-737 1PCP08-AP-0005, 1PCP8-AP-5, NUDOCS 8610160170 | |
| Download: ML20215F362 (12) | |
Text
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FOR INFORMATION ONLY
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HOUSTON LIGHTING AND PL JER COMPANY SOUTH TEXAS PROJECT ELECTRIC GENERATING STATION PLANT PROCEDURES MANUAL STATION PROCEDURE NON SAFETY RELATED (Q)
Determination of Radionuclides IPCP08-AP-0005
- Post Accident Rev. O Page 1 of 12 APPROVED:
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DATE APPROVED DATE EFFECTIVE Table of Contents Page 1.0 Discussion
1.1 Purpose and Scope
2 1.2 Definitions 2
1.3 Principle 2
1.4 Limitations 3
2.0 Prerequisites 3
3.0 Precautions 3
4.0 Procedure 3
4.1 Sample Collection 3
4.2 Sample Preparation and Transfer 4
4.3 Sample Analysis - Automatic 4
5.0 Calculations 5
6.0 Standard!zation 5
7.0 D0cumentation 6
15. 0 Referocces 6
9.0 Support Documents 6
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Determination of Radionuclides IPCP08-AP-0005
- Post Accident Rev. O Page 2 of 12 1.0 Discussion
1.1 Purpose and Scope
1.1.1 This procedure describes the steps necessary to determine the radionuclides in diluted liquid and/or gaseous sample,s collected under Post Accident conditions.
1.2 Definitions
1.2.1 GEOMETRY
A fixed, reproducible location from the detector with a similar sample container so that the value of the associated efficiency equation is valid.
1.2.2 DEAD-TIME
The portion of time during an analysis that the detector and associated electronics are unavailable to process additional pulses due to current pulse processing.
1.3 Principle 1.3.1 The South Texas Project Electric Generating Station (STPEG:1)
Post Accident Sampling System (PASS) is a system composed of various components that provides the capability to obtain reactor coolant and containment atmosphere samples and perform required analyses during post accident conditions within 3 hours3.472222e-5 days <br />8.333333e-4 hours <br />4.960317e-6 weeks <br />1.1415e-6 months <br /> or less f rom the time a decision is made to sample.
1.3.2 The PASS is designed to provide dilution capability for both liquid and gaseous samples. Samples are selected, diluted and collected in accordance with IPCP08-AP-0003 (Sampling and Analysis of RCS, RHR, and RCB Sump - Post Accident) for liquid samples or IPCP08-AP-0004 (Sampling and Analysis of the RCB Atmosphere - Post Accident) for gaseous samples.
After collection, the samples are transferred to the fume hood in the Post Accident Sampling System (PASS) facility lab Samples are diluted further (if required), mcunted in area.
the appropriate counting geometry and then transferred to the counting room in a shielded container for analysis.
1.3.3 Analysis of the samples on the gamma spectroscopy system is performed automatically using a predefined "jobstream".
Af ter invoking the oppropriate jobstream, the analysis proceeds automatien11y but periodically prompts the technician for information pertinent to the sample (i.e.
sample data and time, calibration file to be used, etc.).
From the sample spectrum, a qualttative and quantitative analysis is performed using previously stored energy and ef ficiency calibration files.
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Determination of Radionuclides IPCP08-AP-0005
- Post Accident Rev. O Page 3 of 12 1.4 Limitations 1.4.1 Position of the sample with respect to the detector should be such that the detector dead-time is less than 20%.
1.4. 2 Use of this procedure is limited to DILUTED liquid and/or gaseous samples from the PASS.
2.0 Prerequisites 2.1 An energy calibration must exist prior to a qualitative analysis.
2.2 An ef fier.cy calibration must exist prior to a quantitative analys ts.
2.3 Equipment Required a.
Shielded containers b.
Sample mounting supplies 1.0 Procautions 3.1 Sample collection, preparation, transport and analysis will be performed under applicable Radiation Work Permits.
3.2 All personnel working within the PASS facility shall be responsible for ensuring that radiation exposure associated with the implementation of this procedure is kept as low as reasonably achievable (ALARA).
3.3 Personnel transferring radioactive material shall use measures necescary to prevent the spread of contamination during the packaging and transporting in accordance with applicable procedure (s).
4.0 Procedure 4.1 Sample Collection 4.1.1 Collect the diluted samples and transfer to the fume hood in the PASS facility lab in accordance with one of the following.
4.1.1.1 Liquids, IPCP08-AP-0003 (Sampling and Analysis of RCS, RilR, and RCB Sump - Post Accident) 4.1.1.2 Cases, IPCP08-AP-0004 (Sampling and Analysis of the RCB Atmosphere - Post Accident) e
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Determination of Radionuclides IPCP08-AP-0005
- Post Accident Rev. O Page 4 of 12 4.2 Sample Preparation and Transfer 4.2.1 Diluted Liquid Samples 4.2.1.1 Make an appropriate additional dilution (i.e.
1000:1, 100:1, etc.) of the comple collected in 4.1.1.1, as required, based on the Gross Gamma Activity (in uCi/cc) as determined in accordance with IPCP08-AP-0003 (Sampling and Analysis of RCS, RHR, and RCB Sump - Post Accident).
4.2.1.2 Calculate the FACTOR NUMERATOR to be entered in step 4.3.4 using the equation in section 5.1.
4.2.1.3 Mount.a measured quantity of the sample in a 20 nd.
plastic vial.
4. 2.1.4 Use the volume mounted in the previous step as the FACTOR DENOMINATOR to be entered in step 4.3.4.
4.2.1.5 Place the mounted sample in a shielded container.
4.2.1.6 Transfer to the counting room for analysis.
4.2.2 Diluted Gaseous Samples 4.2.2.1 Place the Diluted Gas Sample Vessel in a shielded container.
4.2.2.2 Transfer to the counting room for analysis.
4.3 Sample (Liquid or Gas) Analysis - Automatic 4.3.1 Place the sample on the 1 meter geometry shelf.
4.3.2 From the MAIN MENU -P/OS V2.0, select Command Language V2.0 and press D0.
4. '3. 3 Enter one of the following and then a RETURN.
4.3.3.1
@PASSL, for diluted liquid samples.
4.3.3.2
@PASSG, for diluted gaseous samples.
4.3.4 Respond to each question in the dialog in accordance with appropriate Addendum.
4.3.4.1 Addendum 1, for diluted liquid samples.
4.3.4.2 Addendum 2, for diluted gaseous samples.
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Determination of Radi.)nuclides IPCP08-AP-0005
- Post Accident Rev. O Page 5 of 12 4.3.5 When the analysis is complete, collect the printout from the printer.
4.3.6-- Review the printout for the following items.
a.
The correct detector b.
Sample size c.
Sample geometry d.
Sample description e.
Activity of the radionuclides of interest (as appicable) f.
LLD of the radionuclides of interest (as applicable) g.
Unidentified gamma peaks that may require identification (as applicable) 4.3.7 Report the analysis results to the Lead Chemical Technicain IMMEDIATELY.
4.3.8 Attach the printout to the appropriate Data Sheet as follows.
4.3.8.1 Liquid samples, IPCP08-AP-0003-2 (RCS, RHR, and RCB Sump Data Sheet).
4.3.8.2 Gaseous samples, IPCP08-AP-0004-2 (RCB Atmosphere Data Sheet).
4.3.9 Upon completion of analysis, return samples to the PASS facility lab area.
5.0 Calculations 5.1 FACTOR NUMERATOR FACTOR NUMERATOR = D1 x D2 where:
D1 = Dilution Factor af forded by the dilution performed in the Liquid and Gaseous Sample Panel (1000 or 100).
D2 = Dilution Factor afforded by additional dilution performed (1000, 100, etc.).
6.0 Standardization 6.1 Standardization of the gamma spectroscopy system is performed in accordance with OPCP09-ZR-0001 (Operation of the Gamma Spectroscopy System).
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Determination of Radi-.nuclides IPCP08-AP-0005
- Post-Accident Rev. O Page 6 of 12 7.0 Documentation 7.1 Forms are dispositioned in accordance with OPCP01-ZA-0011 (Chemical Laboratory Logsheets and Reports).
7.2 The current standardization for calibrated geometries are maintained in the instrument logbook.
8.0 References 8.1 1PCP08-AP-0003, Sampling and Analysis of RCS, RHR, and the RCB Sump - Post Accident, Rev. 0 8.2 1PCP08-AP-0004, Sampling and Analysis of the RCB Atmosphere - Post Accident, Rev. 0 8.3 OPCP09-ZO-0001, Operation of the Gamma Spectroscopy System, Rev. 0 1
9.0 Support Documents 9.1 Addendum 1 - PASSL Gamma _ Spectroscopy Dialog Responses 9.2 Addendum 2 - PASSG Gamma Spectroscopy Dialog Responses
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-Detsreinttien of Radici aclidas -
.lPCP08-AP-0005
- Post Accident Rev. O Page 7.of 12' ADDENDUM l-PASSL GAMMA SPECTROSCOPY DIALOG RESPONSES (Page 1 of 3)
NOTE Enter the_ appropriate (underlined) response or accept the default value by hitting a return.
4
$@PASSL UINS LB:[1,5]HG INSTALL -- Task-name in use.
$RUN LB:[ZZMCAUTIL]ACQ/COMM:"ACQ PASSL.SPC/MC:00/SE:01/ER/LT:300/P0"
$RUN LB:[ZZMCAUTIL]SMP/CO:"SMP LBl:[300,300]0001.INF/DE" ENTER DETECTOR ID NUMBER:
'l ENTER DETECTOR DESCRIPTION (2 LINES):
> 25% llIGil PURITY GERMANIUM DETECTOR WITil 1.R.P.
. > UNIT ONE COUNTING ROOM DETECTOR # IS
?
DETECTOR-DESCRIPTION READS AS FOLLOWS:
2S% HIGH EURITY GERMANIUM DETECTOR WITH T.R.P.
UNIT ONE COUNTING ROOM IS IT CORRECT 7
$RUN LB:[ZZMCAUTIL]PRM/CO:"GRP LBl:[300,300]0001.INF/M0"
' ENTER DEFAULT ANALYSIS TO BE PERFORMED 1 - GAMMA 1 2 - GAMMA 2 3 - GAMMA 3 4 - NAAC 1 6 - GAdM 3 7 - LLD ANALYSIP (
1):
1
-- INTERACTIVE PARAMETER SELECTION -
ANSWER QUESTIONS BY MNEMONIC?
(Y):
N llNITS (MICR0 CURIES
):
UCI/CC FACTOR NUMERATOR?
(
l.00000
):
(VALUE FROM 4.2.1.2)
FACTOR DENOMINATOR 7(
l.00000
):
(VALUE FROM 4.2.1.4) e-e.,
ww-
.-me one.
=
Determination of Radionuclides IPCP08-AP-0005
- Post Accident Rev. O Page 8 of 12 ADDENDQH 1 PASSL GAhMA SPECTROSCOPY DIALOG RESPONSES (Page 2 of 3)
FIRST LIBRARY FILE SPECIFICATION?
(CALLIB):
PASSLCAL SENSITIVITY?
(
10.00000
):
SORPTION CORRECTION?
(N):
N DECAY CORRECTION?
(N):
Y DATE, DD-MMM-YY?
(12-DEC-87):
(DATE OF SAMPLE COLLECTION)
TIME, HH:MM:SS7 (12:00:00):
(TIME OF SAMPLE COLLECTION)
PEAKED BACKGROUND CORRECTION?
(N):
Y RECOVERY CORRECTION?
(N):
"lI~
TOTAL, PERCENT, OR ACTIVITY UNCERTAINTY?
(A):
A 1, 2, OR 3 SIGMA?
(
2):
2 TRUE COINCIDENCE CORRECTION?
(N):
N RANDOM SUMMING?
(N):
N START CHANNEL
(
50):
50 START CHANNEL
(
7999):
7999 GEOMETRY CORRECTION?
(N):
N FIVE POINT LOW?
(N):
Y DECAY CORRECT DURING ACQUISITION?
(N):
Y START CHANNEL:
50 STOP CHANNEL:
7999 NO RECOVERY CORRECTION PEAKED BACKGROUND CORRECTION NO RANDOM SUMMING NO SORPTION CORRECTION NO TRUE COINCIDENCE CORRECTION DECAY CORRECTED TO 12-DEC-87 AT 12:00 UNITS:
UCI/CC FACTOR : ( VALUE FROM 4.2.1.2) / (VALUE FROM 4.2.1.4)
MDA SENSITIVITY ACTIVITY UNCERTAINTY, 2 SIGMA FIVE POINT LOW DECAY CORRECTION DURING ACQUISITION 2 SIGMA PERCENT NET AREA REPRODUCIBILITYr 2.000 2 SIGMA PERCENT GEOMETRY REPRODUCIBILITY:
1.000 FIRST LIBRARY FILE: PASSLCAL ANSWERS SATISFACTORY?
(N):
$ RUN LB : [ ZZMCAUTIL] SMP /CO :" SMP LBl : [ 300,300 ] 0001. INF" ENTER SAMPLE DESCRIPTION (2 LINES)
> DILUTED LIQUID POST ACCIDENT SAMPLE FROM THE (RCS, RHR, OR
> RCB SUMP)
,4 Determination of Radionuclides IPCP08-AP-0005
- Post Accident Rev. O Page 9 of 12 ADDENDUM 1 PASSL GAMMA SPECTROSCOPY DIALOG RESPONSES (Page 3 of 3)
DESCRIPTION READS-AS FOLLOWS:
DLLUTED LIQUID POST ACCIDENT SAMPLE FROM THE (RCS,_RHR, OR RCB SUMP)
IS IT CORRECT?~
$RUN LB:[ZZMCAUTIL]XFR/COM:"XFR LB1:[300,300]0001=PASSL.CLB/AL"
$RUN LB:[ZZMCAUTIL[STR/CO:"STR PASSL.SPC/MC:00/SE:01/CII:0:0/-IN/-CT" 1
0 0
Determination of Radionuclides IPCP08-AP-0005
- Post Accident Rev. O Page 10 of 12 ADDENDUM 2 PASSC GAMMA SPECTROSCOPY DIALOG RESPONSES (Page 1 of 3)
NOTE Enter the appropriate (underlined) response or accept the default value by hitting a return.
$@PASSG OINS LB:[1,5]HG
[NSTALL -- Task name in use.
$RUN LB:[ZZMCAUTIL]ACQ/COMM:"ACQ PASSG.SPC/MC:00/SE:01/ER/LT:300/P0"
$ RUN LB : [ ZZMCA UT IL ] S MP/CO :"SMP LB l : [ 300,300 ] 0001. INF/DE" ENTER DETECTOR ID NUMBER:
1 ENTER DETECTOR DESCRIPTION (2 LINES):
> 25% HIGH PURITY GERMANIUM DETECTOR WITH I.R.P.
> UNIT ONE COUNTING ROOM DETECTOR # IS 1
DETECTOR DESCRIPTION READS AS FOLLOWS:
25% HIGH PURITY GERMANIUM DETECTOR WITH T.R.P.
UNIT ONE COUNTING ROOM IS IT -CORRECT?
SRUN LB:[ZZMCAUTIL]PRM/CO:"GRP LB1:[300,300]0001.INF/M0" ENTER DEFAULT ANALYSIS TO BE PERFORMED 1 - GAMMA 1 2 - GAMMA 2 3 - GAMMA 3 4 - NAAC 1 6 - GAMM 3 7 - LLD ANALYSIS (
1):
1
-- INTERACTIVE PARAMETER SELECTION --
ANSWER QUESTIONS BY MNEMONIC 7 (Y):
N UNITS (MICR0 CURIES
):
UCI/CC FACTOR NUMERATOR 7 (
1.00000
):
(100 or 10,000)
FACTOR DENOMINATOR 7(
1.00000
):
50
a Determination of Radionuclides IPCP08-AP-0005
- P'ost Accident Rev. O Page 11 of 12 ADDENDUM 2 PASSG GAMMA SPECTROSCOPY DIALOG RESPONSES (Page 2 of 3)
FIRST LIBRARY FILE SPECIFICATION?
(CALLIB):
PASSGCAL SENSITIVITY?
(
10.00000
):
SORPTION CORRECCION?
(N):
N DECAY CORRECTION?
(N):
Y DATE, DD-MMM-YY?
(12-DEC-87):
(DATE OF SAMPLE COLLECTION)
TIME, llH:Mit:SS?
(12:00:00):
(TIME OF SAMPLE COLLECTION)
PEAKED BACKGROUND CORRECTION?
(N):
Y HEC 0VERY CORRECTION?
(N):
N TOTAL, PERCENT, OR ACTIVITY UNCERTAINTY?
(A):
A 1, 2, OR 3 SICMA?
(
2):
2 TRUE COINCIDENCE CORRECTION?
(N):
N IANDOM SUMMING?
(N):
N START CilANNEL
(
50):
50 START CHANNEL
(
7999):
7999 GEOMETRY CORRECTION?
(N):
N FIVE POINT LOW 7 (N):
Y DECAY CORRECT DURING ACQUISITION?
(N):
Y START CHANNEL:
50 STOP CHANNEL:
7999 NO RECOVERY CORRECTION PEAKED BACKGROUND CORRECTION MO RANDOM SUMMING NO SORPTION CORRECTION HO TRUE COINCIDENCE CORRECTION DECAY CORRECTED TO 12-DEC-87 AT 12:00 UNITS:
UCI/CC FACTOR : ( 100 or 10,000) / 50 IIDA SENSITIVITY ACTIVITY UNCERTAINTY, 2 SIGMA FIVE POINT LOW DECAY CORRECTION DURING ACQUISITION 2 SIGMA PERCENT NET AREA REPRODUCIBILITY:
2.000 2 SIGMA PERCENT GE0 METRY REPRODUCIBILITY:
1.000 FIRST LIBRARY FILE: PASSGCAL ANSWERS SATISFACTORY?
(N):
$ RUN LB : ( ZZMCAUTIL ] SMP /CO :"SMP LB l : [ 300,300 ] 0001. INF" ENTER SAMPLE DESCRIPTION (2 LINES)
> DILUTED GASEOUS POST ACCIDENT SAMPLE FROM THE
> RGB ATMOSPilERE)
Determination of Radionuclides IPCP08-AP-0005
- Post Accident Rev. O Page 12 of 12 ADDEND'Jr; 2 PASSG GAMMA SPECTROSCOPY DIALOG RESPONSES (Page 3 of.3)
Dt'SCRIPTION READS AS FOLLOWS:
D1 LUTED GASEOUS POST ACCIDENT SAMPLE FROM THE RCB ATMOSPHERE IS IT CORRECT?
$RUN LB:[ZZMCAUTIL]XFR/COM:"XFR LB1:[300,300]0001=PASSG.CLB/AL"
$RUN LB:[ZZMCAUTIL[STR/CO:"STR PASSG.SPC/MC:00/SE:01/Cil:0:0/-IN/-CT" 4
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