ML20065B540
| ML20065B540 | |
| Person / Time | |
|---|---|
| Site: | Columbia  |
| Issue date: | 02/02/1983 |
| From: | WASHINGTON PUBLIC POWER SUPPLY SYSTEM |
| To: | NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION V) |
| Shared Package | |
| ML20065B530 | List: |
| References | |
| 10CFR-050.55E, 10CFR-50.55E, NUDOCS 8302230209 | |
| Download: ML20065B540 (1) | |
Text
. _.
Attachment I WASHINGTON PUBLIC POWER SUPPLY SYSTEM NUCLEAR PROJECT NO. 2 DOCKET NO. 50-397 LICENSE NO. CPPR-93 10CFR50.55(e) CONDITION #221 NAMCO EA180 AND EA740 LIMIT SWITCHES INTERIM REPORT Description of Deficiency Unqualified NANCO EA740 limit switches SGT-POS-V/2A and SGT-POS-V/2B are installed in Class lE cpplications and are required to function during a Design Basis Accident (DBA).
Safety Implication These limit switches are used to indicate the positions (open/close) of safety related valves. Failure of the limit switches could result in erroneous valve position indication, thereby causing operator confusion or error during a DBA.
Corrective Action Limit switches SGT-POS-V/2A and SGT-POS-V/2B will be replaced with quali-fied Class lE limit switches. Additionally, other Class lE applications of NAMCO EA-180 and EA-740 limit switches are being reviewed for installa-tion of unqualified limit switches.
Status of Cerrective Action A Project Engineering Directive (PED) will be issued directing the replace-ment of unqualified NAMC0 EA-180 and EA-740 limit switches identified l
during the review. Quarterly reports will be filed with your office until l
resolved.
l l
l l
l 8302230209 830202 PDR ADOCK 05000397 S
- _ _ - _.