ML100830633

Initial Exam 2010-301 Post Exam Comments

ML100830633
Person / Time
Site:	Sequoyah
Issue date:	03/23/2010
From:	NRC/RGN-II
To:
References
IR-10-301
Download: ML100830633 (23)

Text

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____ Section 13 REPORT NUMBER: 05000327/2010301 and 05000328/2010301 POST EXAM COMMENTS CONTENTS:

/ D Post Examination Comments and Supporting Documentation (if any)

Location of Electronic Files:

O:\Seguoyah Examinations\lnitial Exam 2010-301 Submitted By: ~ WlJ(jjjjviJ WlJ(jjj./viJ Verified By:

Tennessee Valley Authority, Post Office Box 2000, Soddy-Daisy, Tennessee 37379-2000 Personally Identifiable Information - Withhold Under 10 CFR 2.390 March 9, 2010 10 CFR 55.40 10 CFR 55.49 10 CFR 55.5(b )(2)

Mr. Luis A. Reyes Regional Administrator Region \I U.S. Nuclear Regulatory Commission Sam Nunn Atlanta Federal Center 61 Forsyth Street, SW, Suite 23T85 Atlanta, Georgia 30303-8931 Attention: Mr. M. T. Widmann Sequoyah Nuclear Plant, Units 1 and 2 Facility Operating License Nos. DPR-77 and DPR-79 NRC Docket Nos. 50-327 and 50-328

Subject:

Reactor Operator and Senior Reactor Operator Initial Examinations -

05000327/2010301 and 05000328/2010301 In accordance with Examination Standard (ES) 501, "Initial Post-Examination Activities," of NUREG-1021, "Operator Licensing Examination Standards for Power Reactors," Sequoyah Nuclear Plant is providing the following information in enclosures to this letter:

• Written examinations for Reactor Operator (RO) and Senior Reactor Operator (SRO) examination answer keys, examination cover sheets, seating chart, student answer sheets, clean copy of each student's answer sheet and a summary of the student's clarifying questions.

• A substantive comment made by an applicant following the written examination, with explanation concerning why the comment was accepted, and the performance analysis that was conducted on the examination.

• Completed Form ES-403-1, "Written Examination Grading Quality Checklist."

There are no commitments contained in this submittal. In accordance with 10 CFR 55.49 "Integrity of Examinations and Tests," and NUREG-1 021, appropriate measures have been taken to ensure examination integrity and security. The Examination Security Agreement Form ES-201-3 will be provided after obtaining the post-examination signatures.

Printed on recycled paper

u.s. Nuclear Regulatory Commission Page 2 March 9, 2010 If you have any questions, please contact Beth A. Wetzel at (423) 843-7170 or James W.

Proffitt at (423) 843-6651.

Sincerely,

~1t-~

~v-1t-u, Christopher R. Church Site Vice-President Sequoyah Nuclear Plant

Enclosures:

1. Written examinations for Reactor Operator (RO) and Senior Reactor Operator (SRO), examination answer keys, examination cover sheets, seating chart, student answer sheets, clean copy of each student's answer sheet and a summary of the student's clarifying questions.

2. A substantive comment made by an applicant following the written examination, with explanation concerning why the comment was accepted, and the performance analysis that was conducted on the examination.

3. Completed Form ES-403-1, "Written Examination Grading Quality Checklist."

u.s. Nuclear Regulatory Commission Page 3 March 9, 2010 BAW:NRT:SKD Enclosures Bcc (w/o Enclosures):

C. R. Church, POB 2B-SQN J. R. Klaus, STC 2H-SQN R. M. Krich, LP 4G-C J. R. Parker, STC 2A-SQN (with Enclosures)

P. R. Simmons, POB 2A-SQN B. A. Wetzel, OPS 4C-SQN EDMS, WT CA-K (with Enclosures)

SENSITIVE INFORMATION I: Operator License\201 0\ Post Exam Information 030910

)

ENCLOSURE 2 TENNESSEE VALLEY AUTHORITY SEQUOYAH NUCLEAR PLANT (SQN)

UNITS 1 AND 2 A SUBSTANTIVE COMMENT MADE BY AN APPLICANT FOLLOWING THE WRITTEN EXAMINATION, WITH EXPLANATION CONCERNING WHY THE COMMENT WAS ACCEPTED, AND THE PERFORMANCE ANALYSIS THAT WAS PERFORMED ON THE EXAMINATION

Question #81 student comment. (docket #55-62645)

The stem of this question stated to determine the required procedure and the current status of offsite power. I concluded from the stem information that there was a clear delineation between the "required" statement, applying to the procedure and not applying to the "current" status of power operability. I did not, at the time of the exam, believe that the stem was unclear or confusing and did not ask the proctor for clarification.

I believe that this question has two correct answers for the following reasons:

1. GOI-6 Section AA is entered for the condition stated in the root, due to the Transmission Operator notifying the control room of an "unanalyzed" grid condition.

In accordance with the required procedure, GOI-6, Section AA; Section 3.0:

"NOTE 6* Entry into LeOs 3.8.1.1 and 3.8.1.2 is a conservative action at this time" Based on Note 6, I applied the option stated in the note to declare the current offsite status as inoperable and entered the applicable LeOs.

Based on the procedural guidance of GOI-6, it is acceptable to declare offsite power sources inoperable due to the unanalyzed condition stated in the stem, therefore making answer B or A correct. (See attached copies of procedure steps/notes)

2. Based on the stem description of "currenf operability status of offsite power sources, I assumed that when contacted by the Transmission Operator that they implied a certain amount of inoperability in the grid just by being in an unanalyzed condition. I assumed then that the current status of offsite power was inoperable.

In conclusion, based on the unclear information in the stem of the question regarding current status of offsite power and by applying the conservative actions specifically delineated in Note 6 of the required procedure, GOI-6, Appendix AA, I think answers "B" and "A" should both be considered valid answers to this question.

Sequoyah Nuclear Station response; After reviewing the information provided in question #81 and the guidance provided in GOI-6, "APPARATUS OPERATIONS", Section AA, "ACTIONS FOR CONDITION RED OR YELLOW OFFSITE POWER SOURCES", we agree with the candidate on his interpretation of offsite power operability. It is reasonable that the candidate could conclude that offsite power may in-fact be inoperable given the conditions provided in the stem of the question. The candidate would then be correct to make a conservative decision on the operability of offsite power and thus enter Tech Spec LCO 3.8.1.1 actions as stated in NOTE 6.

We recognize that the direction provided by Section AA, is not as clear as it could be on providing the expected actions should this condition be encountered. Thus the station has generated SR 138821 (GOI-6 weakness) to review the direction provided for determining offsite power operability and expected time frames in which this determination should be completed. Also this revised procedure clarification will be aligned with OPDP-8 guidance on operability determination (Le. must have reasonable assurance of continued operability) to ensure consistency.

Based on the guidance in ES-403, Section D, since the two conditions of "An and "B" are mutually exclusive (Le. offsite power cannot be operable and inoperable at the same time) we recommend that question #81 be deleted from the exam.

QUESTIONS REPORT for 2010 Feb SRO exam post-Atlanta

1. 077 AG2.2.44 081 Given the following:

Both units are at 100%.

- The Transmission Operator informs the control room staff that the grid/offsite power conditions are in an unanalyzed condition due to the total system load exceeding the maximum analyzed system load for the current transmission system conditions.

Capacitor Yard Bus Voltage is :

A 164.3 B 164.2 C 164.3 0-REC-241-2, Frequency Recorder Potential 120v AC indicates 60 Hz.

Which ONE of the following identifies the required procedure and the current operability status of offsite power sources?

Procedure Status of Offsite Power A'! GOI-6, "Apparatus Operation" Both sources still operable.

Section AA, "Actions for Condition Red or Yellow Offsite Power Sources."

B. GOI-6, "Apparatus Operation" Both sources immediately inoperable.

Section AA, "Actions for Condition Red or Yellow Offsite Power Sources."

C. 0-GO-5, "Normal Power Operation" Both sources still operable.

Appendix E, "Manual Operation of the Voltage Regulator."

D. 0-GO-5, "Normal Power Operation" Both sources immediately inoperable.

Appendix E, "Manual Operation of the Voltage Regulator."

QUESTIONS REPORT for 2010 Feb SRO exam post-Atlanta DISTRACTOR ANAL YSIS:

A. Correct, GOI-6 is the procedure the crew would implement in response to the conditions and the voltage and frequency is not out of limits as indicated in the question stem. Appendix AA has a 4 hour4.62963e-5 days <br />0.00111 hours <br />6.613757e-6 weeks <br />1.522e-6 months <br /> allowance for evaluation to determine if offsite power is operable.

B. Incorrect, GOI-6 is the procedure the crew would implement in response to the conditions and with voltage and frequency not out of limits, the offsite sources are not immediately inoperable. The 4 hour4.62963e-5 days <br />0.00111 hours <br />6.613757e-6 weeks <br />1.522e-6 months <br /> allowance for evaluation of operability does apply. However if either the voltage or frequency had been outside of allowable values, both sources would have to be immediately declared inoperable.

C. Incorrect, Plausible if candidate thought that because voltage and lower than normal the regulator was not working and that the excitation required manual control and both sources being operable is correct pending the four allowance for evelauation.

D. Incorrect, Plausible if candidate thought thatbecause voltage and lower than normal the regulator was not working and that the excitation required manual control and both sources would be inoperable if the voltage or frequency had been out of allwable values (out of limits) becasue the 4 hour4.62963e-5 days <br />0.00111 hours <br />6.613757e-6 weeks <br />1.522e-6 months <br /> allowance for the evaluation is not allowed.

• QUESTIONS REPORT for 2010 Feb SRO exam post-Atlanta Question Number: 81 Tier: _1_ Group _1_

KIA: 077 AG2.2.44, Generator Voltage and Electric Grid Disturbances: Ability to interpret control room indications to verify the status and operations of a system, and understand how operator actions and directives affect plant and system conditions.

Importance Rating: 4.2 / 4.4 10 CFR Part 55: 41.5/43.5/45.12 10CFR55.43.b: (5)

KIA Match: Applicant must determine the procedure to be implemented and the status of the offsite power supplies from information provided by the Transmission operator and indication in the control room.

Technical

Reference:

GOI-5, Apparatus Operations, R130 Proposed references None to be provided:

Learning Objective: OPT200.SWYD, B.5.c OPL271 GOI-5, B.2 Question Source:

New X Modified Bank Bank Question History:

Comments:

TENNESSEE VALLEY AUTHORITY SEQUOYAH NUCLEAR PLANT GENERAL OPERATING INSTRUCTION GOI-6 APPARATUS OPERATIONS Revision 130 QUALITY RELATED PREPARED/PROOFREAD BY: E. L. Parson RESPONSIBLE ORGANIZATION: Operations APPROVED BY: D. A. PORTER EFFECTIVE DATE: 4/29/2009 LEVEL OF USE: MULTIPLE USE (SEE INDIVIDUAL SECTIONS)

REVISION DESCRIPTION:

Revised Section F to include changes pertaining to the replacement of the 1A and 1C Main Transformers per DCN D22232A which were inadvertently omitted in the previous revision (08000858). Included a listing in Section F for the Unit 1 and Unit 2 Spare Main Bank Transformer.

GOI-6 SQN APPARATUS OPERATIONS Rev: 130 Page 2 of 237 TABLE OF CONTENTS Page 1 of 3 Section Title Page 1.0 PURPOSE 5 SECTION A VALVE OPERATION ................................................................... . 6 SECTION B MOTOR OPERATING AND STARTING LIMITATIONS ................ 36 SECTION C STATION BATIERIES ...................................... ........................... 40 SECTION D POWER TRANSFORMER THERMAL PROTECTIVE DEViCES...................................................................................... 44 SECTION E TURBOGENERATOR OPERATION ............................................ 47 SECTION F ONSITE AND OFFSITE POWER REQUiREMENTS.................... 51 SECTION G YOKOGAWA CONTROLLER....................................................... 60 SECTION H FEEDWATER HEATER OPERATION.......................................... 63 SECTION I VALVE PACKING ADJUSTMENTS BY PLANT OPERATORS.... 64 SECTION J LEVEL INDICATIONS USING TYGON TUBING........................... 65 SECTION K CONTROLLER "RESET WINDUP" .............................................. 66 SECTION L VENTING, FILLING, AND DRAINING GUIDELINES .................... 67 SECTION M HEATER SIGHT GLASS OPERATION ........................................ 70 SECTION N MOTOR AND PUMP INSPECTIONS PRIOR TO START ............. 73 SECTION 0 HIGH FLUX AT SHUTDOWN MONITOR ..................................... 74 SECTION P INCORE THERMOCOUPLE TEMPERATURE AND SUBCOOLING MARGIN MONITORING SYSTEM (EXOSENSOR)....................... 76 SECTION Q 1.0 THERMO ELECTRON SMARTVIEW RECORDERS............. 82 2.0 NR-45 THERMO ELECTRON SMARTVIEW SV 280 ............ 84 3.0 WESTRONICS SMARTVIEW RECORDERS ........................ 86 4.0 YOKOGAWA VR200 SERIES RECORDERS ....................... 92 5.0 YOKOGAWA DX104 RECORDERS ..................................... 94

GOI-6 SQN APPARATUS OPERATIONS Rev: 130 Page 3 of 237 TABLE OF CONTENTS Page 2 of 3 Section Title Page 6.0 YOKOGAWA DX2000 RECORDERS ................................... 96 7.0 YOKOGAWA DX1004 RECORDERS .................................. 101 8.0 DATA LOGGER PANEL 1(2)-R-112 ...................................... 102 9.0 LEEDS & NORTHRUP SPEEDOMAX 25000 ........................ 103 10.0 YOKOGAWA MODEL 4370 (INTERTIE XFMR WiND) ........ 120 11.0 YOKOGAWA HR 2500E MODEL 3880 ............................... 134 12.0 WESTRONICS SERIES 3000C (1/2-RR-90-253, -254) ....... 143 13.0 GENESIS SHERLOCK REFRIG GAS MON ........................ 158 14.0 MCR CHILLER MICRO-PROCESSOR CNTLR ................... 161 SECTION R RESETTING PROTECTIVE DEVICES ......................................... 165 SECTION S COMPONENTS WITH POTENTIAL 3.0.3 IMPACT ...................... 166 SECTION T SEISMIC MONITORING SySTEM ................................................ 170 SECTION U GLYCOL CHILLER TCV OPERATION ......................................... 174 SECTION V CTLP STATION AND CT VLV PIT SENSAPHONE OPERATION ............... .................................... ................... .......... 175 SECTION W LOOSE PARTS MONITOR OPERATION ..................................... 177 SECTION X OVERHEAD CRANE DISCONNECT OPERATION ...................... 178 SECTION Y BENTLY NEVADA MFP VIBRATION MONITORING PANEL ....... 179 SECTION Z ELECTRICAL BOARD INDICATING LIGHTS ............................... 183 SECTION AA ACTIONS FOR CONDITON RED OR YELLOW OFFSITE POWER SOURCES ............................................ ......... 184 SECTION AB COMMON STATION SERVICE TRANSFORMER AUTO TAP CHANGER OPERATION ........................................... 190 SECTION AC 161KV CAPACITOR BANK OPERATION .................................. 195

GOI-6 SQN APPARATUS OPERATIONS Rev: 130 Page 4 of 237 TABLE OF CONTENTS Page 3 of 3 Section Title Page SECTION AE CYCLING AIRBLAST AND SF6 CIRCUIT BREAKERS (PCBS) ... 202 SECTION AF MANSELL OPERATION AND SETTING CHANGES .................... 207 SECTION AG SKILL OF THE CRAFT CRITERIA ............................................... 213 SECTIONAH TRUTH DIAL INDICATOR USE .................................................... 214 SECTION AI VIBRATION METER (CSI2120) USE ........................................... 215 SECTIONAJ OPERATING CONTROLLERS IN MANUAl. ................................ 218 SECTION AK OPERATING AUX BLDG RAILROAD BAY HATCHES ................ 219 SECTION AL WATER/STEAM/GASEOUS HAMMERING AVOIDANCE ............ 221 SECTION AM DIESEL GENERATOR PYROMETER BATTERy ......................... 225 SECTION AN PRACTICAL INSIGHT FOR PLANT OPERATORS ...................... 226 SECTION AO TWO HANDED EQUIPMENT OPERATION ................................. 228 SECTION AP PROGRAMMING PANAMETRIC FLOW METER (ULTRASONiC) ................................................................. 229 SECTION AQ CROSS-TYING OF PLANT SYSTEMS TO SUPPORT MAINTENANCE ACTiViTIES ..........................................................235 SOURCE NOTES ....................................... .............................................................. 237

GOI-6 SQN APPARATUS OPERATIONS Rev: 130 Page 184 of 237 SECTION AA Page 1 of 6 ACTIONS FOR CONDITON RED OR YELLOW OFFSITE POWER SOURCES (REFERENCE USE) 1.0 PURPOSE A. To provide operators with guidance as to actions to be taken when notified by the Transmission Operator that one or both offsite power sources are determined to be in Condition Red or Condition Yellow. This section does not apply when offsite power has been lost (refer to AOP-P.01).

2.0 SECTION REFERENCES A. RIMS E14 030714 002, SON Grid Operating Instructions.

B. RIMS B25 880624 041, Draft of General Operating Instructions.

C. FSAR 8.2.2 D. Print 15E500-3 E. Calculation SON-GRID-STUDY-012 EDMS Accession No. E31010223251 F. 1-AR-M1-A, 1-XA-55-1A and 2-AR-M1-A, 2-XA-55-1A G. 0-SI-OPS-082-007.W H. NRC Temporary Instruction 2515/163, "Operational Readiness of Offsite Power"

GOI-6 SQN APPARATUS OPERATIONS Rev: 130 Page 183 of 237 SECTIONZ Page 1 of 1 ELECTRICAL BOARD INDICATING LIGHTS (INFORMATION USE) 1.0 PURPOSE

~ A. To provide information on the proper indicating lamps for various electrical boards.

2.0 SECTION REFERENCES A. EWR No. 06-ICE-202-005 B. PER 91030.

C. DCCN-Q04482.

3.0 REQUIREMENTS NOTE Use of the wrong indicating bulb may violate design requirements and could result in damage or short bulb life.

The following table provides information on required bulb type as determined by Systems Engineering. Bulb information for other boards will be added when it is verified by Engineering.

BOARD REQUIRED BULB All 6.9 KV boards 1835 (1)(incandescent) 480 V Load Centers (Arrow Hart) 55, 57, or 1895 (incandescent)

Valve Position at local HS 259 (wedge base, 6.3v)

(Le. non-rtn vlv indicator)

Lighted pushbuttons on MOVs 12 (miniature bi-pin base 6.3v)

FSV position indicators, etc. 6S6135v (120v, 6 amp-small silver-colored base)

MFP and EHC pump indications 10S6 250v (2)

(on local panel) 240v 10 amp- small brass-colored base)

(1) Do not use 1819 bulbs for indicating lights in 6.9KV boards, PER 70135.

(2) Do not use 135v bulb in 240v socket (it will shine brightly for a few hours then bum out.)

I SQN APPARATUS OPERATIONS GOI-6 Rev: 130 Page 185 of 237 I

SECTION AA Page 2 of 6 3.0 OPERATOR ACTIONS NOTE 1 Actions in this section may be performed out of sequence.

NOTE 2 An unanalyzed condition can also be referred to as a "red condition".

NOTE 3 A yellow grid risk power status means that at least one contingency exists that will disqualify offsite power. Communications with a Transmission Operator will be required to determine grid status.

[1] IF notified by Transmission Operator the grid/offsite power conditions are in a red condition OR are unanalyzed, THEN PERFORM the following:

[a] MAKE a log entry that we are in a degraded condition (91-18) and will need to be analyzed.

[b] PERFORM an OPDP-9 phone call immediately with the TPS Operator, Engineering, Operations Management and on-site TPS to fully understand the grid conditions and actions to be taken.

[c] REFER to SPP-7.1 On line Work Management for guidance on scheduling and work activities during a Offsite Power Risk Condition.

NOTE 4 The operability determination will be coordinated through SON Site Engineering and Transmission Operator.

NOTES IF grid frequency and/or voltage is outside acceptable limits, the 4 hour4.62963e-5 days <br />0.00111 hours <br />6.613757e-6 weeks <br />1.522e-6 months <br /> allowance to determine operability does NOT apply.

[d] START a 4 hour4.62963e-5 days <br />0.00111 hours <br />6.613757e-6 weeks <br />1.522e-6 months <br /> clock for an operability determination to be done.

GOI-6 SQN APPARATUS OPERATIONS Rev: 130 Page 186 of 237 SECTION AA Page 3 of 6 3.0 OPERATOR ACTIONS NOTE 6 Entry into LCOs 3.8.1.1 and 3.8.1.2 is a conservative action at this point.

[e] IF analysis is NOT complete within 4 hours4.62963e-5 days <br />0.00111 hours <br />6.613757e-6 weeks <br />1.522e-6 months <br />, THEN COMPLETE the following:

1. ENTER LCO 3.8.1.1 or 3.8.1.2

2. PERFORM Diesel testing.

NOTE The following step starts a 24 hour2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br /> clock that will cause both units to be shutdown.

[f] IF Transmission Operator reports that, based on their analysis, neither offsite power source is operable, LCO 3.8.1.1 or 3.8.1.2 will be entered at that time.

NOTE Both offsite power sources inoperable may be reportable under 10CFRSO.72(b)(3)(v) due to loss of offsite power safety function.

Refer to NUREG-1022.

[2] IF both offsite power circuits are inoperable, THEN PERFORM the following:

[a] ENTER LCO 3.8.1.1 or 3.8.1.2 as applicable.

[b] REFER to SPP-3.S, Regulatory Reporting Requirements:

• EVALUATE reportability under 10CFRSO.72.

• PERFORM site notifications specified in SPP-3.S App. D.

[c] INITIATE OPDP-9, Emergent Issue Response.

[d] NOTIFY Work Week Manager to evaluate plant risk USING Sentinel or Oram as applicable.

[e] EVALUATE inoperable safety-related equipment and INITIATE action to restore any inoperable equipment as necessary.

t, I SON APPARATUS OPERATIONS GOI-6 Rev: 130 Page 187 of 237 I

SECTIONAA Page 4 of 6 3.0 OPERATOR ACTIONS

[f] IF any electrical boards are in an alternate (off-normal) alignment, THEN EVALUATE returning to normal alignment.

[g] INITIATE actions to protect DIGs, ERCW system and-shutdown boards, such as restricting access and deferring non-essential work/testing.

[h] MONITOR the following:

• Grid Voltage

• 6.9kV and 480V Shutdown Board voltage

[i] IF any Shutdown Board voltage is less than 93.5% (6456 V) for more than 5 minutes OR voltage is less than 80% (5520 V),

THEN PERFORM the following:

1. ENSURE DIG started.

2. ENSURE Shutdown board Normal and Alternate supply breakers OPEN.

3. ENSURE Shutdown Board energized from DIG.

[j) IF DIGs are NOT running, THEN PERFORM 0-SI-OPS-082-007.0 within 8 hours9.259259e-5 days <br />0.00222 hours <br />1.322751e-5 weeks <br />3.044e-6 months <br /> to verify DIG operability.

[k] COORDINATE with load dispatcher to restore grid voltage and off-site power source operability as soon as possible.

GOI-6 SQN APPARATUS OPERATIONS Rev: 130 Page 188 of 237 SECTION AA Page 5 of 6 3.0 OPERATOR ACTIONS (Continued)

NOTE 1 Loss of a complete SQN 161kV Bus requires entry into LCD 3.8.1.1 Action a in Modes 1 - 4. If one or more bus sections are lost, entry into LCD 3.8.1.1 Action a will depend on switchyard alignment and available power sources. If an additional single failure could cause a loss of offsite power, then LCD 3.8.1.1 Action a should be entered.

NOTE 2 0-SI-OPS-082-007.W should be performed within one hour of entering LCD 3.8.1.1 action a, regardless of whether the action is exited prior to one hour. (PER 96156)

[3] IF one offsite power circuit is inoperable, THEN PERFORM the following:

[a] ENTER LCO 3.8.1.1 or 3.8.1.2 as applicable.

[b] PERFORM 0-SI-OPS-082-007.W within 1 hour1.157407e-5 days <br />2.777778e-4 hours <br />1.653439e-6 weeks <br />3.805e-7 months <br /> and at least once per 8 hours9.259259e-5 days <br />0.00222 hours <br />1.322751e-5 weeks <br />3.044e-6 months <br /> thereafter to verify operability of remaining offsite power source.

[c] REFER to SPP-3.5, Regulatory Reporting Requirements:

• EVALUATE reportability under 10CFR50.72 .

• PERFORM site notifications specified in SPP-3.5 App. D.

[d] EVALUATE initiation of OPDP-9, Emergent Issue Response.

[e] NOTIFY Work Week Manager to evaluate plant risk USING Sentinel or Dram as applicable.

[f] EVALUATE inoperable safety-related equipment and INITIATE action to restore any inoperable equipment as necessary.

STEP CONTINUED ON NEXT PAGE

to '

I SQN APPARATUS OPERATIONS GOI-6 Rev: 130 Page 189 of 237 I

SECTIONAA Page 6 of 6 3.0 OPERATOR ACTIONS (Continued)

[3] (Continued)

[g] IF any electrical boards are in an alternate (off-normal) alignment, THEN EVALUATE returning to normal alignment.

[h] EVALUATE actions to protect Switchyard, DIGs, ERCW system and shutdown boards, such as restricting access and deferring non-essential work/testing.

[i] NOTIFY Load Dispatcher and Onsite TPS personnel to evaluate work activities to ensure remaining source NOT jeopardized.

[j] MONITOR the following:

• Grid Voltage

• 6.9kV and 480V Shutdown Board voltage

[k] IF any DIG is also inoperable, THEN PERFORM 0-SI-OPS-082-007.0 within 8 hours9.259259e-5 days <br />0.00222 hours <br />1.322751e-5 weeks <br />3.044e-6 months <br /> to verify operability of remaining DIGs.

[I] COORDINATE with load dispatcher to restore grid voltage and off-site power source operability as soon as possible END OF SECTION

GOI-6 SQN APPARATUS OPERATIONS Rev: 130 Page 190 of 237 SECTION AB Page 1 of 5 COMMON STATION SERVICE TRANSFORMER AUTO TAP CHANGER OPERATION (CONTINUOUS USE) 1.0 PURPOSE To provide operational guidance for the Common Station Service Transformer under various conditions.

2.0 REFERENCES

A. Plant Voltage Schedule Switchyard Letter 18 Rev. 24 3.0 INSTRUCTIONS 3.1 Common Station Service Transformer Auto-Tap Changer Operation NOTE 1 Normal operation of CSST auto-tap changer will maintain start bus voltage automatically between 7.01 kV and 7.10 kV when the LTC remote control switches are in the PULLED-OUT-AUTO position. (LTC-X remote control switch for start bus 1A or 18; LTC-Y remote control switch for start bus 2A or 28).

NOTE 2 If voltage exceeds limits of 6876V (Low) or 7236V (high) for three minutes, then XA-55-EC86A, window 14, CSS Transformer Auto-Tap Changer Abnormal, will annunciate and the tap changer locks in its present position.

NOTE 3 To manually adjust voltage, ensure L TC-X or L LTC-X TC-Y control switch (as LTC-Y applicable) is in manual (pushed in). To raise voltage, raise tap by turning handle in the clockwise direction.

To lower voltage, ensure LTC-X or LTC-Y control switch (as applicable) in manual (pushed in) and lower tap by turning handle in the counter clockwise direction.

NOTE 4 Start bus 1A or 2A voltage is monitored using 1-EI-57-55 or 2-EI-57-55 respectively on M-1 main control boards. Start bus 18 or 28 voltage is monitored using 1-EI-57-56 or 2-EI 56 respectively on M-1.

NOTE 5 Off-site Power availability requirements with Tap Changers in Manual are contained in Section F and 15E500-3.

Buckner, Michael Allen From: Porter, David A Sent: Friday, March OS, 2010 8:50 AM To: Smith, Steven Vaughn; Buckner, Michael Allen; Stephens, Michael Lee; Wilkes, James K; Simmons, Paul R; Leary, William T; Bergeron, Aaron Scott Cc: Rieger, Timothy Edward; Roddy, Albert F

Subject:

New SR 138821 (GOI-6 weakness)

The following issue was identified following the NRC written exam administered on 3/3/2010:

GOI-6 Section AA provides guidance for off-site power being in an unanalyzed condition. This section directs performing an operability determination within 4 hours4.62963e-5 days <br />0.00111 hours <br />6.613757e-6 weeks <br />1.522e-6 months <br />. If in an unanalyzed condition due to grid load exceeding the previous analyzed limit, the intent is that off-site power may still be considered operable pending completion of the analysis of the new load condition as long as grid voltage and frequency are within limits. If the 4 hour4.62963e-5 days <br />0.00111 hours <br />6.613757e-6 weeks <br />1.522e-6 months <br /> clock expires prior to completing the analysis, then the procedure directs declaring both offsite power sources inoperable. One license candidate was confused by the existing guidance and decided to immediately declare both off-site power source inoperable (without waiting for the operability determination within 4 hours4.62963e-5 days <br />0.00111 hours <br />6.613757e-6 weeks <br />1.522e-6 months <br />). Please clarify this procedure section to make this guidance clearer and to ensure that this section is consistent with OPDP-8 guidance on operability determinations (i.e. must have reasonable assurance of continued operability).

1