ML20215F394
| ML20215F394 | |
| Person / Time | |
|---|---|
| Site: | South Texas  |
| Issue date: | 09/23/1986 |
| From: | Underwood J HOUSTON LIGHTING & POWER CO. |
| To: | |
| Shared Package | |
| ML20215F286 | List: |
| References | |
| RTR-NUREG-0737, RTR-NUREG-737 1PCP08-ZZ-0007, 1PCP8-ZZ-7, NUDOCS 8610160186 | |
| Download: ML20215F394 (3) | |
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N HOUSTON LIGHTING AND POWER COMPANY SOUTH TEXAS PROJECT ELECTRIC GENERATING STATION
- PLANT PROCEDURES MANUAL 8%
v4.y, DIVI IONSPROC_EDURE NON SAFETY-D (Q)
Backup Determination of h de'sw IPCP08-ZZ-0007 Post Accident Vg'@
Rev. 0 k
Page 1 of 3 APPROVED:
TE.dwc 9h3/BC-9[2.4/8C C0&A MANAGER l
DATE APEROVED DATE EFFECTIVE 1.0. Discussion
1.1 Purpose and Scope
1.1.1 The purpose of this procedure is to identify a method of performing a backup analysis for chloride concentration following a design basis accident on the RCS, RHR or RCB sump.
1.1.2 This procedure meets the requirement of NUREG 0737 item II.B.3 (Post Accident Sampling Capabilities) to provide a backup method for in line monitoring.
1.2 Definitions None 1.3 Principle 1.3.1 The presence of as little as 2 ppm Cl-in the RCS, kHR, or RCB sump, along with the conditions of low pH, temperature of 150 - 300 F, and the presence of dissolved oxygen greater than 1.0 ppm can result in the intergranular stress corrosion cracking of austenitic stainless steel. Early detection is considered important in timely application of countermeasures to prevent harmful effects of chloride contamination. For this reason a backup method of chloride analysis is needed.
1.3.2 This method employs a diluted sample taken from the PASS and run through the Dionex IC in the PASS Lab, Radiochemistry Lab, or Secondary Chemistry Lab.
8610160186 861009 DR ADOCK 05000498 l
PDR 1
1
Backup Determination of Chlorides -
IPCP08-ZZ-0007 Post Accident Rev. O Page 2 of 3 1.4 Limitations 1.4.1 Range of analysis in accordance with OPCP02-ZD-0002 is 0.001 - 100 ppm chlorides.
a.
A diluted PASS sample of 1:100 will give an analysis range of 0.10 - 10,000 ppm Cl.
b.
A diluted PASS sample of 1:1000 will give an analysis range of 100 - 100,000 ppm C1.
2.0 Prerequisites 2.1 The Ion chromatograph to be used shall be set up and standardized in accordance with OPCP02-ZD-0002 (Determination of Anion-Ion Chromatographic Method).
3.0 Precautions 3.1 Sample collection, preparation and analysis shall be performed under applicable Radiation Work Permits.
3.2 All personnel working within the PASS facilit'y shall be responsible l
for ensuring that radiation exposure associated with knplementing this procedure is kept as low as reasonably achievable (ALARA).
3.3 Personnel transferring radioactive material shall use measures necessary to prevent the spread of contamination during packaging and transporting in accordance with applicable procedure (s).
4.0 Procedure f
4.1 Collect either an RCS, RHR, or RCB sump sample in accordance with IPCP08-AP-0003 (Sampling and Analysis of RCS, RHR, and RCP Sump -
Post Accident). Note the dilution used (i.e. 1:100, 1:1000) 4.2 If necessary, transport sample (s' to the appropriate laboratory.
4.3 Analyze sample (s) for chlorides in accordance with OPCP02-ZD-0002 (Determination of Anion-Chromatographic Method).
4.4 If the sample was diluted in step 4.1, calculate the actual chloride concentration in accordance with Section 5.0.
4.5 Record the results on the Core Damage Assessment Data Sheet - Back up Analyses IPCP08-AP-0001-2 1--
l Backup Determination of Chlorides -
1PCP08-ZZ-0007 Post Accident Rev. O Page 3 of 3 I
5.0 Calculation _
5.1 Corrected Cl~ concentration = Measured Cl conc. x Dilution Factor
~
(Dilution will normally be 100 or 1000) 6.0 _Standa_rdizatio.n 6.1 Standardize IC in accordance with OPCP02-ZD-0002 (Determination of Anions - Ion Chromatographic Method).
7.0 Documenta_t_ ion 7.1 Logsheets and Reports are dispositioned in accordance with OPCP01-ZA-0011 (Chemical Ls.boratory Logsheets and Reports).
8.0 References
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8.1 1PCP08-AP-0003 Saupling and Analysis of RCS, RHR, and RCB Sump -
Post Accident, Rev. 0 8. 2' 1PCP08-AP-0002 Operation and Maintenance of the Post Accident Sampling System, Rev. 0 8.3 OPCP02-ZD-0002 Determination of Anions - Ion Chromatographic method, Rev. 1 f
8.4 NUREG 0737 " Post Accident Sampling Capabilities" 8.5 1PCP08-AP-0001 PASS Core Damage Assessment, Rev. 0 9.0 Support Docum_ents None I
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