05000528/LER-2004-005, Re Missed Surveillance Tests on Shutdown Cooling Valve RCS Pressure Interlocks
| ML042120320 | |
| Person / Time | |
|---|---|
| Site: | Palo Verde  |
| Issue date: | 07/23/2004 |
| From: | Danni Smith Arizona Public Service Co |
| To: | Document Control Desk, Office of Nuclear Reactor Regulation |
| References | |
| 192-01146-DMS/SAB/DJS LER 04-005-00 | |
| Download: ML042120320 (6) | |
| 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 10 CFR 50.73(a)(2)(i)(B), Prohibited by Technical Specifications 10 CFR 50.73(a)(2) 10 CFR 50.73(a)(2)(i) 10 CFR 50.73(a)(2)(viii)(A) 10 CFR 50.73(a)(2)(vii)(B), Common Cause Inoperability |
| 5282004005R00 - NRC Website | |
text
IARS A subsidiany of Pinnacke 1J 'sf C'apital Corporation 1 OCFR50.73 Palo Verde Nuclear Generating Station David M. Smith Plant Manager Nuclear Production Tel.
623-393-6116 Mail Station 7602 Fax.
623-393-6077 P.O. Box 52034 e-mail: DSMITH10 apsc.com Phoenix, AZ 85072-2034 192-01146-DMS/SAB/DJS July 23, 2004 ATTN: Document Control Desk U. S. Nuclear Regulatory Commission Washington, DC 20555-0001
Dear Sirs:
Subject:
Palo Verde Nuclear Generating Station (PVNGS)
Units 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 1-2004-005-00 Attached please find Licensee Event Report (LER) 50-528/2004-005-00 that has been prepared and submitted pursuant to 10CFR50.73. This LER reports findings related to missed Surveillance Tests for the Shutdown Cooling Pressure Interlocks for Units 1, 2 and 3.
In accordance with 10CFR50.4, a copy of this LER is being forwarded to the NRC Region IV Office 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.
Arizona Public Service Company makes no commitments in this letter. The corrective actions described in this LER are not necessary to maintain compliance with regulations.
DMS/SAB/DJS/kg Attachment cc:
B. S. Mallett M. B. Fields N. L. Salgado Sincerely, NRC Region IV Regional Administrator NRC NRR Project Manager NRC Senior Resident Inspector for PVNGS zp'g'
I-e
In,-
APPROVED BY OMB NO. 3150-0104 EXPIRES 7-31.2004 NRIC FORM 366 U.S. NUCLEAR REGULATORY NRC F M 6U NU E, 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 1
OF 5
- 4. TITLE MISSED ST ON SHUTDOWN COOLING VALVE RCS PRESSURE INTERLOCKS
- 5. EVENT DATE
- 6. LER NUMBER
- 7. REPORT DATE
- 8. OTHER FACILmES INVOLVED MONTH DAY YEAR YEAR SEUMENTRAL I REV NO MONTH DAY YEAR FACILITY NAME DOCKET NUMBER I
NUMBER PVNGS Unit 2 105000529 05 28 2004 2004 -
005 00 07 23 2004 PVNGSAME DOCKET NUMBER
- 9. OPERATING 1
- 11. THIS REPORT IS SUBMITTED PURSUANT TO THE REQUIREMENTS OF 10 CFR §: (Check all that apply)
MODE 20.2201 (b) 20.2203(a)(3)(ii)
_ 50.73(a)(2)(ii)(B) 50.73(a)(2)(ix)(A)
- 10. POWER 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 - Voluntary 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 NRC For 366A 20.2203(a)(2)(v)
XX 50.73(a)(2)(i)(B) 50.73(a)(2)(vDi)
A 20.2203(a)(2)(vi) 50.73(a)(2)(i)(C) 50.73(a)(2)(viii)(A)
,i^
20.2203(a)(3)(i) 50.73(a)(2)(li)(A)
=
50.73(a)(2)(vii)(B)
- 12. LICENSEE CONTACT FOR THIS LER NAME TELEPHONE NUMBER (Include Area Code)
Daniel G. Marks, Section Leader, Regulatory Affairs 623-393-6492CAUSE SYSTEM COMPONENT MANU-REPORTABLE
CAUSE
SYSTEM COMPONENT ANU R REPORTABLE S ST M jFACTURER TO EPIX CAS YTM CMOET FACTURER TO EPIX
- 14. SUPPLEMENTAL REPORT EXPECTED
- 15. EXPECTED MONTH DAY YEAR YES (If yes, complete EXPECTED SUBMISSION DATE) I X UNO BDATE
ABSTRACT
On May 28, 2004, during a review of Condition Report number 2687507 it was determined that Palo Verde was not testing SDC isolation valve interlocks as described in UFSAR section 7.6, nor were these safety-related interlocks being subjected to a complete channel calibration/functional test as intended by NRC GL96-01. The Technical Specification surveillance requirement is 3.4.15.2.
Surveillance tests 36ST-9SI04 and 36ST-9SI05 were revised to match the test procedure described in UFSAR section 7.6.2. The tests have been successfully completed in all three units.
A review of other non-Plant Protection System safety-related interlocks, inhibits, permissives or bypass circuits that may not have been included in surveillance tests will be conducted.
Previous similar events were reported in LERs 3-2003-003, 2-2003-003 and 1-2001-005.
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 NRC Form 366A) procedure that is intended to be used to comply with these requirements. Surveillance Procedures SDC Interlocks Loop & Alarm Calibration (36ST-9Sl04 and 36ST-9SI05) were changed in 1995 to delete valve interlock logic verification and only checked alarm contact status.
No unusual characteristics of the work location (e.g., noise, heat, poor lighting) directly contributed to this event. No procedural errors contributed to this event.
- 7.
CORRECTIVE ACTIONS
Surveillance tests 36ST-9SI04 and 36ST-9SI05 were revised to match the test procedure described in UFSAR section 7.6.2. The tests have been successfully completed in all three units.
A review of other non-Plant Protection System safety-related interlocks, inhibits, permissives or bypass circuits that may not have been included in surveillance tests will be conducted.
- 8.
PREVIOUS SIMILAR EVENTS
In the past three years, previous similar events were reported in LERs 3-2003-003, 2-2003-003 and 1-2001-005.