ML11242A234

Notification Nn 201400711

ML11242A234
Person / Time
Site:	San Onofre
Issue date:	04/01/2011
From:	Southern California Edison Co
To:	Office of Information Services
References
FOIA/PA-2011-0157
Download: ML11242A234 (10)

Text

Unit 3 System Status: NOPR NOPT ORAS OSTS User Status: CRTD STA ACRO SON(;S Notification: NN 201400711 I{ II 1 I

Description:

UNSAT voltage reading cell 38 after EQ Created on: 04/01/2011 Reported By: (b)(6)

Responsible:

Priority: 4 Medium Required Start: 05/21/2011 08:28 End: 09/17/2011 08:28 Order No: 800684853 Code:

Task Exists? [Y]

Func.Loc.: S3.DCPS.3B007 125V STATION BATTERY 3B007 Equipment:

Assembly:

Quality Class: II Location: Control Building Room: Elevation: Column:

Planner Group: Maint Electrical WorkCenter: M E Maint. Electrical Plant: 1000 SONGS - Services Reliability Classification: CRITICAL-A ARC Review Status: A Awaiting review Feedback Req'd? (X]

M Rule: Sig Level:

Breakdown ] Malfunction Start: 04/01/2011 09:37 Breakdown Duration: H End:

==

Description:==

04/01/2011 09:16:29

1. Problem description While performing follow up testing MO 800676380 step 5.3. cell #38 voltage was found to be 2.0435 vdc. Reading validated with second M&TE to 2.0436. Both readings unsat. Notified U3 manager #(b)(6) i and electric supervisor (b)(6)[(6 ]notified engineer per MO.

step 5.3.2.

2. Impact or consequence Need to validate operability of battery bank 3b007.

3. Describe what happened See above problem description

4. Immediate actions taken Notified U3 control room and supervisor. Wrote NN

5. Extent of Condition (as applicable)

Cell #38

6. Cause (if known)

Print Date: 04/04/2011 Page I of 10 Pag1o10

J... Notification Continued SONGS Notification: NN 201400711

Description:

UNSAT voltage reading cell 38 after EQ Description Continued:

unknown

7. Recommended Actions

- - -- -I(b)(6)

-- 4 Additions to -7. Recommended Actions-:

Order 800684853 being worked to swap cell #38, with the spare cell for bank 3B007.

Print Date: 04/04/2011 Page 2 of 10 Print Date: 04/04/2011 Page 2 of 10

I" Task Summary SONGS Notification: NN 201400711 Func.Loc.t S3.DCPS.3B007 125V STATION BATTERY 3B007 Location: Control Building Room: Elevation: Column:

Task No.: 0001 Code Group:N-TS-IOD Immediate Operability Determination Short Text:

Task Code: NO40 IOD-Equipment NOT OPERABLE WorkCenter: EMPES Electrical Systems Responsible: (b)(6) c Task No.: 0002 Code Group:N-EOC Extent of Condition Assessment Short Text:

Task Code: E010 Provide Initial Estimate WorkCenter: EM PES Electrical Systems Responsible: (b)(6)

Task No.: 0003 Code Group:N-RPT Reportability Assessment Short Text:

Task Code: RP20 RPT Engineering review WorkCenter: EMPES Electrical Systems Responsible: (b)(6)

Page 3 of 10 Print Date: 04/04/2011 04/04/2011 Page 3 of 10

Trending Worksheet SONGS Notification: NN 201400711 Func.Loc.: S3.DCPS.3B007 125V STATION BATTERY 3B007 Part: Damage:

Cause: Activity:

Part: Damage:

Cause: Activity:

Part: Damage:

Cause- Activity:

Part: Damage:

Cause: Activity:

Print Date: 04/04/2011 Page 4 of 10

Task Details S()N(;S Notification: NN 201400711 Func.Loc.: S3.DCPS.3B007 125V STATION BATTERY 3B007 Location: Control Building Room: Elevation: Column:

Task No.; 0001 Code Group: N-TS-IOD Immediate Operability Determination Short Text:

Task Code: N040 IOD-Equipment NOT OPERABLE WorkCenter: EM PES Electrical Systems Responsible: (b)(6)

Status: TSOS Planned Start:

Planned End:

Complete:

Task Long Text:

IOD; Immediate Operability Determination (KEY POINTS]

Refer to S0123-XV-52 for guidance IOD TEMPLATE AND KEY POINTS OTE:

Operability Determination SHALL only be completed by the On - Shift SRO.

other cognizant personnel may complete other Sections of the IOD as needed.

[11 Notification Number: 201400711 (21 Deficiency Identification and the Affected Functional Location (3) Identify the Specified Safety Function(s) , include mission time (if applicable)

(41

Conclusion:

Determine OPERABLE/INOPERABLE OPERABLE XX INOPERABLE (5] Basis (Provide Discussion):

Cell #38 voltage was found to be 2.0435 vdc. Reading validated with second M<(>&<)>TE to be 2.0436. Both readings unsat.

[6] Extent of Condition- Operability: #Address the Question: "Does the Page 5 of 10 Date:

Print Date: 04/04/2011 04/04/2011 Page 5 of 10

I Task Details Continued SONG;S Notification: NN 201400711

==

Description:==

UNSAT voltage reading cell 38 after EQ degraded or nonconforming condition currently exist on the other train/unit?"

Creatc an EOCO Task to address the extent of condition.

[7] IF NO EOCO Task has been created to describe "other train/other unit" findings, THEN provide justification.

[8] INITIAL REVIEWS:

SRO/STA Name: 1(b)(6)

SM Name: IP)(6)

[9] IOD Closure Information (Basis for Closure)

[10] CLOSURE REVIEW Performer Name:

Peer Check Name:

Print Date: 04/04/2011 Page 6 of 10 Print Date: 04/04/2011 Page 6 of 10

Task Details SONGS Notification: NN 201400711 Func.Loc.: S3.DCPS.3B007 125V STATION BATTERY 3B007 Location: Control Building Room: Elevation: Column:

Task No.: 0002 Code Group: N-EOC Extent of Condition Assessment Short Text:

Task Code: E010 Provide Initial Estimate WorkCenter: EM PES Electrical Systems Responsibl e:

Status: TSO Planned Start:

Planned End:

Complete:

Task Long Text:

EOC (Extent of Condition Assessment)

Do not use this assignment to assess the extent of condition supporting the Operability Determination Process (IOD, IFA, or created by the STA during CAP-2 screening). These assessments should be documented-on an N-EOCO Task.

Perform an Extent of Condition (EOC) evaluation for an identified eficiency to determine if the deficiency currently exists elsewhere. Do not use this method to determine cause; use a DCE, ACE or RCE as ppropriate to determine the cause.

or all other EOC uses, determine and evaluate scope as necessary.

Refer to S0123-XV-50 CAP-3.

1. Affected Equipment (See deficiency description or, if the deficiency description is incomplete or incorrect, describe)

2. Deficiency Identification (See description or, if the description is incomplete or incorrect, describe)

3. Discussion of findings, including the basis for the conclusion:

Page 7 of 10 Print Date:

Print Date: 04/04/2011 04/04/2011 Page 7 of 10

Task Details SONGS Notification: NN 201400711 Func.Loc.: S3.DCPS.3B007 125V STATION BATTERY 3B007 Location: Control Building Room: Elevation: Column:

Task flptailn.

Task No.: 0003 Code Group: N-RPT Reportability Assessment Short Text:

Task Code: RP20 RPT Engineering review WorkCenter: EMPES Electrical Systems Responsible: i(b)(6) c Status: TSO Planned Start:

Planned End:

Complete:

Task Long Text:

TECHNICAL ASSESSMENT TEMPLATE NOTE: ENGINEERING JUDGEMENT may be used to answer questions. However, the basis for the judgment needs to be documented to validate the judgment.

For the purposes of determining REPORTABILITY, it is only necessary for the individual responding to these question to identify a single occurrence within the previous three years where the SPECIFIED (SAFETY)

FUNCTION was incapable of being fulfilled (i.e., both trains of Sedundant systems were INOPERABLE OR NON-FUNCTIONAL).

hen the requested questions in SECTION 2 are answered, then the assigned individual should reassign the N-RPT to an RP25 status. ONLY an NRA PQS 270QC7 qualified individual may reassign an N-RPT task to a status RP30 or higher.

SECTION 1 - Initial Reportability Assessment (RPI0) [To be completed by a PQS 270QC7 Qualified Individual.]

Not immediately reportable. ME to revivew.

Prepared By: :(b)( 6 ) Date: 4-4-11 SECTION 2 - Technical Assessment (RP20) [The REPORTABILITY ENGINEER will determine which questions are to be answered.]

1. Describe the condition being evaluated for reportability:

Print Date: 04/04/2011 Page 8 of 10 Print Date: 04/04/2011 Page 8 of 10

Task Details Continued SONGS Notification: NN 201400711

==

Description:==

UNSAT voltage reading cell 38 after EQ

2. Would the SSC have been able to fulfill all its intended safety function(s) as defined in the UFSAR (reference specific sections) since the failure (Operable)? Consider all plant operating Modes, mission time, and the status of other equipment. If yes, why?

. If the conclusion of step 2 is Yes, mark steps 4, 5 and 6 as #Not Applicable,# document task performance/peer check, advance the Task to RP25 and assign to Reportability Compliance for completion of step 7.

If the conclusion of step 2 is No, complete steps 4, 5 and 6.

4. When did the SSC fail or first become degraded (break, code not met, out of SR range, etc.)? If the specific time of failure is not known, is there any compelling evidence of prior failure?

I What was the apparent cause of the failure or degraded condition?

(use engineering judgment to determine, if necessary - but also describe the basis for your judgment). If appropriate, generate a cause evaluation assignment.

6. Did the failure or failure mode affect or potentially affect another SSC or the other unit?

7. [Additional Questions as indicated by the REPORTABILITY ENGINEER.]

Prepared By: Date:

Peer Reviewer Comments:

Peer Reviewer: Date:

After the peer review is completed, the Advance the RPT Task to RP25 and assign to Reportability Compliance for completion of step 7.

SECTION 3 - Compliance Review and Management Approval (RP25 and RP30)

8. Reportability assessment summary (include references as appropriate.

(To be completed by qualified individuals only - see Encode 270QC7:

kssessing Events for Reportability).

Print Date; 04/04/2011 Page 9 of 10

I II

. " Task Details Continued SONG;S Notification: NN 201400711

Description:

UNSAT voltage reading cell 38 after EQ Prepared By: Date:

Management Reviewer Comments:

Management Reviewer: Date:

Page 10 of 10 Date:

Print Date: 04/04/2011 04/04/2011 Page 10 of 10