05000528/LER-2001-005, Re Inadequate Surveillance Test for Time Response Testing of Hl Log Power Trip Function
| ML020580194 | |
| Person / Time | |
|---|---|
| Site: | Palo Verde  |
| Issue date: | 02/07/2002 |
| From: | Ide W Arizona Public Service Co |
| To: | Document Control Desk, Office of Nuclear Reactor Regulation |
| References | |
| 192-0110-WEI/SAB/DFH LER-01-005-00 | |
| Download: ML020580194 (8) | |
| Event date: | |
|---|---|
| Report date: | |
| Reporting criterion: | 10 CFR 50.73(a)(2)(ii)(B), Unanalyzed Condition 10 CFR 50.73(a)(2)(ix)(A) 10 CFR 50.73(a)(2)(iii) 10 CFR 50.73(a)(2)(x) 10 CFR 50.73(a)(2)(iv)(A), System Actuation 10 CFR 50.73(a)(2)(v)(A), Loss of Safety Function - Shutdown the Reactor 10 CFR 50.73(a)(2)(v)(B), Loss of Safety Function - Remove Residual Heat 10 CFR 50.73(a)(2)(v), Loss of Safety Function 10 CFR 50.73(a)(2)(i)(A), Completion of TS Shutdown |
| 5282001005R00 - NRC Website | |
text
1 OCFR50.73 William E. Ide Mail Station 7602 Palo Verde Nuclear Vice President TEL (623) 393-6116 P.O. Box 52034 Generating Station Nuclear Production FAX (623) 393-6077 Phoenix, AZ 85072-2034 192-011 00-WEI/SAB/DFH February 7, 2002 U. S. Nuclear Regulatory Commission ATTN: Document Control Desk Mail Station P1-37 Washington, DC 20555-0001
Dear Sirs:
Subject:
Palo Verde Nuclear Generating Station (PVNGS)
Unit 1, 2 and 3 Docket No. STN 50-528, 50-529 and 50-530 License No. NPF-41, NPF-51 and NPF-74 Licensee Event Report 2001-005-00 Attached please find Licensee Event Report (LER) 50-528/2001-005 -00 that has been prepared and submitted pursuant to 10CFR50.73. This LER reports a condition where APS did not meet the requirements of Technical Specification Surveillance Requirements (TSSR) 3.3.1.13 and 3.3.2.5.
In accordance with 1 OCFR50.73(d), a copy of this LER is being forwarded to the NRC Regional Office, NRC Region IV and the Senior Resident Inspector. If you have questions regarding this submittal, please contact Daniel G. Marks, Section Leader, Regulatory Affairs, at (623) 393-6492.
The corrective actions described in this LER are not necessary to maintain compliance with regulations. Arizona Public Service Company makes no commitments in this letter.
Sincerely, WEI/SAB/DFH/kg Attachment cc:
E. W. Merschoff (all with attachment)
J. H. Moorman J. N. Donohew
APPROVED BY OMB NO. 3150-0104 EXPIRES 7-31-2004 N0C FORM 366 U.S. NUCLEAR REGULATORY
, the NRC may not conduct or sponsor, and a person is not required to respond to, the information collection.
- 3. PAGE Palo Verde Nuclear Generating Station Unit 1 05000528 l
1 OF 7
- 4. TITLE Inadequate Surveillance Test for Time Response Testin of Hi Log Power Trip Function
- 5. EVENT DATE
- 6. LER NUMBER
- 7. REPORT DATE
- 8. OTHER FACILITIES INVOLVED MONTH DAY YEAR FACILITY NAME DOCKET NUMBER MNHD YEAR YUMBER Palo Verde Unit 2 05000529 FACILITY NAME DOCKET NUMBER 12 1 1 2001 2001 -
005
- - 00 02 07 2002 Palo Verde Unit 3 05000530
- 9. OPERATING 1
- 11. THISREPORTIS SUBMITTED PURSUANT TO THEREQUIREMENTSOF10CFR§:
(Check allthatapply)
MODE 1
=
2201(b) 20.2203(a)(3)(ii) 50.73(a)(2)(ii)(B) 50.73(a)(2)(ix)(A)
- 10. POWER 99 20.2201(d) 20.2203(a)(4) 50.73(a)(2)(iii) 50.73(a)(2)(x)
LEVEL 20.2203(a)(1) 50.36(c)(1)(i)(A) 50.73(a)(2)(iv)(A) 73.71 (a) (4) 20.2203(a)(2)(i) 50.36(c)(1)(ii)(A) 50.73(a)(2)(v)(A) 73.71 (a)(5) 20.2203(a)(2)(ii) 50.36(c)(2) 50.73(a)(2)(v)(B)
OTHER 20.2203(a)(2)(iii) 50.46(a)(3)(ii) 50.73(a)(2)(v)(C)
Specify in Abstract below or 20.2203(a)(2)(iv) 50.73(a)(2)(i)(A) 50.73(a)(2)(v)(D) in
Abstract
On December 11, 2001, plant technicians discovered a procedural inadequacy in the method used for response time testing of the Plant Protection System Log Power Trip. This method did not meet Technical Specification Surveillance Requirements 3.3.1.13, and 3.3.2.5. All three Palo Verde Units were in Mode 1 when the Log Power Trip was declared inoperable. Since the Log Power Trip is not required in Mode 1 operation, no Limiting Condition for Operation Required Action was entered. Cause of the inadequate test method is attributed to inadequate documentation of the system design impact upon the time response testing requirements. Retest using an adequate test procedure was completed on December 21, 2001. The "As Found" response times were all acceptable and the log power channels were returned to operable status.
The Surveillance Test Procedure will be updated with a note to reflect the need to conduct log power trip time response testing using the correct signal range.
There have been no previous similar licensee event reported in the last three years.
NRC FORM 366 (7-2001)
(If more space is required, use additional copies of (If more space is required, use additional copies of (If more space is required, use additional copies of (If more space is required, use additional copies of (If more space is required, use additional copies of (if more space is required, use additional copies of NRC Form 366A)
To prevent recurrence, a note will be added to the Surveillance Test Procedure, 36ST-9SB42 to reflect the need to conduct log power trip time response testing using the LCR range.
- 8.
PREVIOUS SIMILAR EVENTS
There have been no previous similar licensee events reported in the last three years.
- 9.
ADDITIONAL INFORMATION
None
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