ML070780418
| ML070780418 | |
| Person / Time | |
|---|---|
| Site: | Pilgrim |
| Issue date: | 06/12/2000 |
| From: | Entergy Nuclear Generation Co |
| To: | Office of Nuclear Reactor Regulation |
| References | |
| CR-PNP-2000-09228 | |
| Download: ML070780418 (6) | |
Text
ET?!tWg)f Originator: CONVERTED DATA Originator Group: CONVERTED DATA Supervisor Name: CONVERTED DATA Discovered Date: 06/12/2000 0O:OO CONDITION REPORT CR-PNP-2000-09228 Originator Phone: 0 Operability Required: N Reportability Required: N Initiated Date: 06/12/2000 0O:OO Condition
Description:
MAINTENANCE DISCOVERED P-161C SUCTION PIPING 98 DEG ELBOW FOR C CONTINUOUS SSW HYPO PUMP CRACKED AND LEAKING INTO BURM AREA Immediate Action
Description:
Suggested Action
Description:
EQUIPMENT:
Tag Name Tag Suffi Name Component Code Process System Code 27 REFERENCE ITEMS:
Type Code Description CONVERTED PR PR.00.9228 TRENDING (For Reference Purposes Only):
Trend Tvpe Trend Code KEYWORDS MAINT RULE
ADMIN Enfefgy Initiated Date: 6/12/2000 0:OO Owner Group :Maint Programs Staff Current
Contact:
SHATAS, A.
Current Significance: C - CORRECTION Closed by: SHATAS, A.
6/19/2000 0:OO CR-PNP-2000-09228 Summary
Description:
MAINTENANCE DISCOVERED P-161C SUCTION PIPING 98 DEG ELBOW FOR C CONTINUOUS SSW HYPO PUMP CRACKED AND LEAKING INTO BURM AREA Remarks
Description:
PR=HPI HYPO P-161C MR10001275 PIPING CRACKED LEAKING BURM Closure
Description:
EVALUATION AND CORRECTIVE ACTION COMPLETE.
En&ygy A S S I G N M E N T S Version: 1 Significance Code: C - CORRECTION Classification Code: NON-SIGNIFICANT Owner Group: Maint Programs Staff Performed By: DeTemple,Francis J 06/19/2000 0O:OO Assignment
Description:
CONDUCT A REWORK EVALUATION FOR THE CONCERNS IDENTIFIED BY THIS PROBLEM REPORT.
DETERMINE AND IMPLEMENT REQUIRED CORRECTIVE ACTIONS.
NOTE: "AN APPARENT CAUSE ANALYSIS SHALL BE PERFORMED IF THE EVALUATION DETERMINES THAT THIS IS A REWORK ISSUE".
Enteqg-y I CORRECTIVE ACTION 1 CR-PNP-2000-09228 CA Number:
1 Group J I Name I
MCALLISTER, S.
DeTemple,Francis J I
i _ ~ _ - __
Assigned By: Maint Programs Staff Assigned To: Maint Programs Staff Subassigned To :
Originated By: MCALLISTER, S.
Performed By: DETEMPLE, F.
7/6/2000 0O:OO:OO 6/12/2000 0O:OO:OO Subperformed By:
Approved By:
Closed By: MCALLISTER, S.
7/6/2000 0O:OO:OO Current Due Date: 08/l 8/2000 Initial Due Date: 0811 8/2000 CA Type: GENERAL Plant Constraint: NONE CA
Description:
CONDUCT A REWORK EVALUATION FOR THE CONCERNS IDENTIFIED BY THIS PROBLEM REPORT.
DETERMINE AND IMPLEMENT REQUIRED CORRECTIVE ACTIONS.
NOTE: "AN APPARENT CAUSE ANALYSIS SHALL BE PERFORMED IF THE EVALUATION DETERMINES THAT THIS IS A REWORK ISSUE".
Response
Subresponse :
CONVERTED DATA
Entqgy Closure Comments:
MEMO DETAILING THE RESULTS OF THE REVIEW AND THE CORRECTIVE ACTIONS TAKEN.
CORRECTIVE ACTION CR-PNP-2000-09228 UPON COMPLETION FORWARD A COPY TO J. GAEDTKE.
PROBLEM REPORT PROBLEM REPORT No. 00.9228.00 EVALUATION RESPONSE
- 1. Problem
Description:
Maintenance discovered P-161C suction piping 90-degree elbow for P-161C continuous SSW hypo pump cracked and leaking into burm area.
- 2. ApparentDirect Cause: Over-tightening of the PVC elbow caused cracking to occur. It was noted that great difficulty was encountered during removal of the elbow.
- 3. Repeat Occurrence: __ YES -X-NO A yes answer may require significance elevation based on nature and extent of problem 4.Equipment Performance Issues: System Number -HYPO-Component Number P 16 1 C-Maintenance Rule Functional Failure: -
YES -X-NO -
Unknown
- 5. Corrective Actions Completed (include Dates if possible): Elbow replaced. Work completed IAW temporary repair procedure 1.5.3.9 under MR 10001275 on 6-28-00.
- 6. Corrective Actions Required (If not required check "N/R") -X-N/R
- 7. Trend Data for Apparent Cause (check "N/R" if analysis deals with equipment performance only)
N/R a) Inappropriate Action (IA)
Description:
During initial installation worker tightened the PVC elbow to tight.
IA Job Title -Worker IA Group -Maint IA Department M a i n t ENTERGY X 0
Contractor Work Process -MC Key Activity F W
O&P Failure Mechanism 5 HEIA Failure Mechanism -1M Human Error Type (Circle 1): Skill BasedO Rule BasedO Knowledge Based Procedure Number(s) -N/A Event Type REW-
- 8. The Significance should:
Be Upgraded -X-Remain the Same If applicable, the reason for the upgraded:
Completed By: -J.
DETEMPLE Date: 6
@ OEvaluatorMentor
-- I 00-Approved By: -S.
MCALISTER Date: 7 I 6 /LOO-0 0 Manager
[7118/00; A. SHATAS] A COPY OF THIS EVALUATION WAS SENT TO J. GAEDTKE.
NOTE: P-161C SUCTION PIPING 90? ELBOW SHOWED EVIDENCE OF OVERTIGHTENING OF THE PVC ELBOW. DURING ELBOW REPLACEMENT, GREAT DIFFICULTY WAS ENCOUNTERED DURING UNTHREADING OF THE CRACKED PVC ELBOW. A NEW PVC ELBOW WAS INSTALLED AND TIGHTENED SUFFICIENT TO PREVENT LEAKAGE AT THE NPT CONNECTION.
THE 5-FUNCTION VALVE ON THE P-161C DISCHARGE PIPING WAS REPLACED WITH A SINGLE-FLTNCTION AIR BLEED VALVE DUE TO A CRACKED INLET NIPPLE CAUSED BY INSUFFICIENT PIPING SUPPORT AND PULSE VIBRATION FROM THE POSITIVE DISPLACEMENT PUMP. ADDITIONAL SUPPORT FOR P-161A AND D 1 F
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