ML20135J105
| ML20135J105 | |
| Person / Time | |
|---|---|
| Site: | Byron  |
| Issue date: | 08/01/1985 |
| From: | COMMONWEALTH EDISON CO. |
| To: | |
| Shared Package | |
| ML20135J104 | List: |
| References | |
| NUDOCS 8509250258 | |
| Download: ML20135J105 (4) | |
Text
t 4
COMMONWEALTil EDISON BYRON NUCLEAR POWER STATION Unit 1 PRIMARY COOLANT SOURCES OUTSIDE CONTAINMENT Initial Examination Summary Report August 1,1985 8509250258 850917 PDR ADOCK 05000454 A
PDR i
(
PRIMARY COOLANT SOURCES OUTSIDE CONTAINMENT Initial Examination Summary Report In accordance with Technical Specification 6.8.4, integrated leak tests were performed on piping systems as described in Byron /Braidwood Final Safety Analysis Report (FSAR),
Appendix E.77," Primary Coolant Sources Outside Containment." The FSAR position was developed to meet the requirements of NUREG-0737 (III.D 1.1).
The Potentially Radioactive Leak Testing (PRLT) Program is described in Station Procedures BVP 200-12 and BVP 200-T10. These procedures reference station surveillances 1BVS 4.10.-4, IBVS 4.10-5, BVS XII-1, and BVS XII-2 which were utilized to execute the visual examinations for leakage.
The ASME Class 2 and 3 systems were examined in accordance with the ASME Boiler and Pressure Vessel Code,Section XI,1980 Edition including Addenda through Winter 1981. Non-ASME Class (Class D) systems were examined using guidance from Section XI and ANSI B.31.1.
Leakage observed during the course of the examinations was conservatively quantified and documented. Work requests were then initiated to repair the leaking components.
Byron file location 3.11.1220 contains a copy of station procedure BVP 100-T10, " Leakage Testing Requirements for Potentially Radioactive Components Outside Containment, Checkoff List". The Checkoff List contains all the components examined, which surveillance was used to execute the visual examination on the component, and the date the surveil-lance was performed.
The following systems, or portions thereof (see FSAR for exemptions), were visually examined for evidence of leakage: Chemical and Volume Control (CV), Containment Spray (CS), Radioactive Waste Gas (GW), Offgas (OG), Residual IIcat Removal (Ril),
Safety injection (SI), Fuel Pool Cooling (FC) and Process Sampling (PS). Fifty-six (56) work requests were initiated to identify forty-nine (49) leaking valves (packing, bonnet, or leaking by), three (3) leaking pump seals, and four (4) leaking threaded connections.
The total estimated leakage is approximately 1.50 gallons per hour of fluid and approximately one (1) scfm gaseous. It should be noted, this is a conservative estimate due to continuing maintenance efforts to contain the identified leakage. Attachment A contains a system breakdown of identified leakage.
The only exception to the required examination boundaries is the 0A Waste Gas Decay Tank (OGWOITA). The tank has been removed from service for ALARA concerns (proximity to construction work). This tank will be incluaed in future integ ated leak tests.
The generalleakage criteria to be applied during the first fuel cycle will be to continue to initiate work requests to repair identified leakage. Work requests of this type will receive an ALARA review to determine the urgency of repair based on ALARA concerns.
l
- 20/034
k r
ATTACIIMENT A Chemical and Valve Control System (CV)
EPN DESCRIPTION AMOUNT ICV 8355A Packing Leak 2/100 gph ICV 8355B Packing Leak 2/100 gph ICV 052A Packing Leak 2/100 gph ICV 052B Packing Leak 2/100 gph ICV 051 A Packing Leak 2/100 gph ICV 8369B Packing Leak 2/100 gph ICV 8355C Packing Leak 2/100 gph ICV 8355D Packing Leak 2/100 gph ICV 8369D Packing Leak 1/100 gph ICV 052D Packing Leak 1/100 gph ICV 051D Packing Leak 2/100 gph ICV 064 Packing Leak 2/100 gph ICV 063 Packing Leak 2/100 gph ICV 8100 Packing Leak 2/100 gph ICV 012 Packing Leak 2/100 gph ICV 8382A Packing Leak 2/100 gph ICV 8382B Packing Leak 2/100 gph ICV 184 Packing Leak 2/100 gph ICV 070 Packing Leak 1/100 gph ICV 01PA Pump Seal Leak 3/100 gph ICV 01PB Pump Seal Leak 3/100 gph ICV 075 Packing Leak 5/100 gph ICV 8152 Packing Leak 2/100 gph ICV 8119 Packing Leak 2/100 gph ICV 8136 Bonnet Leak 1/100 gph IBR7054 Packing Leak 1/100 gph Containment Spray System (CS)
EPN DESCRIPTION AMOUNT 1CSO49A Vent Valve Leaks By 5/100 gph ICS010 Packing Leak 1/100 gph ICS36A A-i Threaded Connection Leak 1/100 gph ICS009A Packing Leak 2/100 Radioactive Waste Ga_s EPN DESCRIPTION AMOUNT OGW9287A Packing Leak.
1/2 sefm 0GW5010A Diaphragm Leak 1/2 scfm 5
F
,)
Attachment A Page 2 Residual lleat Removal (Ril) 1RII8725A Packing Leak 1/100 gph 1R1101PA Pump seal Leak 5/100 gph Safety injection System (SI)
EPN DESCRIPTION AMOUNT ISI8811 A Packing Leak 2/100 gph ISIO59A Packing Leak 2/100 gph ISI8809A Packing Leak 1/100 gph ISI8836A Packing Leak 1/100 gph ISIO58A Packing Leak 3/100 gph ISI8926 Bonnet Leak 1/100 gph ISI8920 Packing Leak 1/100 gph ISI0l6B Packing Leak 25/100 gph ISI8814 Packing Leak 1/100 gph 1S1049 Packing Leak 1/100 gph ISI8888 Packing Leak 1/100 gph Process Sampling (PS)
EPN DESCRIPTION AMOUNT I PS161 Fitting Leak 1/100 gph IPS159 Packing Leak 1/100 gph IPS9353B Packing Leak 5/100 gph IPS9353A Packing Leak 5/100 gph IPS9369B Fitting Leak 3/100 gph IPS9369A Fitting Leak 3/100 gph IPS135 Packing Leak 2/100 gph 1PS131 Valve Leaking By 2/100 gph IPS9354B Packing Leak 5/100 gph IPS9355B Packing Leak 5/100 gph IPS9356B Packing Leak 2/100 gph
- 20/034