ML090930121

Company - ISFSI Emergency Operating Procedure, Rev 1, EO-2, Response to Off-Normal Operations

ML090930121
Person / Time
Site:	Maine Yankee
Issue date:	03/25/2009
From:	Maine Yankee Atomic Power Co
To:	Office of Nuclear Reactor Regulation
References
EO-2, Rev 1
Download: ML090930121 (14)

Text

ISFSI Master Document Index (MDI)

Emergency Operating Procedures (EO series) 03125/09 No. Rev. : Title 50.59: 72.48: ISR QA : RP : Review Date :Effective Date

Emergency Planning EO-1 0No Admnistration No Yes Yes Yes: 9/2/08 9/2/08

---

------------ ---- I -------------------- ---------------- I------S ---------

Response to Off-Normal EO-2

_ 1  : . Yes Yes Yes No Yes : 03/25/09  : 03/25/09

Opeýrations:  :  :  :  :

EO-3 0 :Response to Accidents Yes Yes Yes No Yes 9/2/08 9/2/08

4Response to Natural EO-4 0 :T .............. Yes Yes Yes No : Yes : 9/2/08 9/2/08 hEmergency Plan

/

EO-5 0 E e lNo No Yes: No :Yes: 9/2/08 9/2/08

-. :i pementaton . . .. ". .

E

• 6 0 :Non-Emergency Event  :  :  :

EO-6  : Ae0 m t No No Yes No: No, 9/2/08 9/2/08 EO-10:1 0 ISFSI Severe Guidelines i:Management Incidient No No Yes No No 9/2/08 9/2/08 Page 1 of 1

MAINE YANKEE ATOMIC POWER COMPANY ISFSI PROCEDURE RESPONSE TO OFF-NORMAL OPERATIONS Procedure No. EO-2 Revision No. I Preparer: Ze,4tlilr" Date: 031,!"k!_

10CFR50.59 / 10CFR72.48 ASSESSMENT IOCFR50.59 SCREEN REQUIRED? YES L]NO IOCFR50.59 EVALUATION REQUIRED (NO. _ [1 YES &rNO 10CFk72.48 SCREEN REQUIRED? YES []NO 10CFR72.48 EVALUATION REQUIRED (NO.__ [] YES XNO

ISFSI Emergency Operating Procedure EO-2 Rev. I Response to Off-Normal Operations 1.0 PURPOSE This procedure provides the actions to be taken by ISFSI personnel in response to Off-Normal Conditions affecting a fuel loaded Vertical Concrete Cask (VCC) at the ISFSI.

2.0 SCOPE 2.1 The ISFSI Response to Off-Normal Conditions applies to those supporting the operation of the Maine Yankee ISFSI.

2.2 Off-Normal Conditions addressed by this procedure include:

2.2.1 Severe Ambient Temperature Conditions (1.06'F and -40'F) [NAC-UMS FSAR 11.1.11 2.2.2 Blockage of Half of the Air Inlets [NAC-UMS FSAR 11. 1.2]

2.2.3 Failure of Instrumentation [NAC-UMS FSAR 11. 1.4]

2.2.4 Small Release of Radioactive Particulate from the Canister Exterior

[NAC-UMS FSAR 11.1.5]

2.2.5 Degraded VCC Thermal Performance (AT > 102°F) [NAC-UMS FSAR Appendix 12A]

3.0 DEFINITIONS 3.1 Operable - The CONCRETE CASK heat removal system is OPERABLE if the difference between the average ISFSI ambient temperature and the average outlet air temperature is < 102'F (AT _<102' F) for the NAC-UMS CANISTER. [NAC-UMS FSAR Appendix 12A, At.lI 3.2 Average Ambient Temperature - The average ambient temperature is the average value of the temperature monitoring device(s) monitoring the ambient air temperature in the area around a fuel loaded VCC.

4.0 REFERENCES

4. 1 NAC-UMS Universal Storage System Final Safety Analysis Report (FSAR).

4.2 NAC-UMS Universal Storage System Technical Specifications 4.3 AD-4, ISFSI Procedure Control Program.

4.4 AD-5, [SFS[ Work Control Program.

Page 2 of 12

IS FSI Emergency Operating Procedure EO-2 Rev. I 4.5 AD-7, Corrective Action Program.

4.6 AD-16, ISFSI Personnel Training and Qualifications.

4.7 OP-I, ISFSI Temperature Monitoring Program.

5.0 RESPONSIBILITIES 5.1 ISFSI Shift Supervisor is responsible for ensuring the requirements of this procedure are implemented.

5.2 ISFSI Shift Supervisor shall be responsible for the operational command functions.

5.3 ISFSI personnel are responsible for performing the actions described in this procedure.

5.4 Radiation Protection Manager (or designee) is responsible for maintaining the Radiation Protection Procedures and providing guidance during emergency events.

6.0 PROCEDURE

6.1 General

6.1.1 Document any partial procedure performance in accordance with procedure AD-4, ISFSI Procedure Control Program.

6.1.2 Steps may bemarked as "N/A" if the step provides an option for not completing the step.

6.1.3 Only personnel meeting the requirements of procedure AD-16, ISFSI Personnel Training and Qualifications shall perform inspections and data collection.

6.2 IDENTIFY the applicable Off-Normal Condition and the Attachment that addresses the required actions:

Off-Normal Condition Attachment Ambient Air Temperature (<-40'F or > 106'F) A Blockage of Half of the Air Inlets on a Vertical Concrete Cask B Failure of Instrumentation on a Vertical Concrete Cask C Small Release of Radioactive Particulate from the Canister Exterior D Degraded VCC Thermal Performance (AT > 102'F) E Page 3 of 12

ISFSI Emergency Operating. Procedure EO-2 Rev. I 6.3 RECORD the event and the date/time of the event discovery in the Security desk log.

6-A PERFORM the required actions of the applicable Attachment for the Off-Normal Condition identified.

6.5 ISFSI Shift Supervisor shall REFER to [SFSI Procedure EO-5, Emergency Plan Implementation to determine appropriate Emergency Action Levels, and for other required actions.

7.0

SUMMARY

OF CHANGES 7.1 D.3.5 added AD-7 after in accordance with.

7.2 E.3.6 changed 24 hours2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br /> to 6 hours6.944444e-5 days <br />0.00167 hours <br />9.920635e-6 weeks <br />2.283e-6 months <br />.

7.3 E.3.6 a. added OP-I before ISFSI Temperature Monitoring Program.

8.0 ATTACHMENTS 8.1 Attachment A - Severe Ambient Temperature Conditions (106'F and -40'F) 8.2 Attachment B - Blockage of Half of the Air Inlets 8.3 Attachment C - Failure of Instrumentation 8.4 Attachment D - Small Release of Radioactive Particulate from the Canister Exterior 8.5 Attachment E - Degraded VCC Thermal Performance (AT > 102'F)

Page 4 of 12

-t I

• I. i Ii :

IS FS I Emergency Operating Procedure EO-2.

Rev. I ATTACHMENT A SEVERE AMBIENT TEMPERATURE CONDITIONS Ambient Air Temperature (<-40'F or >106 0 F)

(Page 1 of 1)

A. 1 AUTOMATIC ACTIONS None A.2 IMMEDIATE ACTIONS A.2.1 NOTIFY the ISFSI Shift Supervisor.

A.2.2 NOTIFY the ISFSI Manager or designee.

A.3 SUBSEQUENT ACTIONS INITIALS A.3.1 Monitor the VCC temperature in accordance with procedure OP-1, ISFSI Temperature Monitoring Program.

A.3.2 INITIATE a Condition Report in accordance with procedure AD-7, Corrective Action Program to document the condition.

A.3.1 If at any time during the temperature monitoring the AT exceeds 102'F, proceed to Attachment E, Degraded VCC Thermal Performance (AT >

102°F).

Page 5 of 12

ISFSI Emergency Operating Procedure EO-2 Rev. I ATTACHMENT B BLOCKAGE OF HALF OF THE AIR INLETS ONA VERTICAL CONCRETE CASK (Page 1 of 2)

B. I -AUTOMATIC ACTIONS None B.2 IMMEDIATE ACTIONS B.2.1 NOTIFY the ISFSI Shift Supervisor.

B.2.2 NOTIFY the ISFSI Manager or designee.

B.3 SUBSEOUENT ACTIONS CAUTION Due to the potential radiation hazard near the surface of the concrete cask and radiation streaming from the air inlets and outlets, personnel should practice ALARA principles:

• Maximize distance from the air vents and minimize stay time around the concrete cask.

" Do NOT remove the VCC inlets or outlets screens without qualified HP personnel present.

NOTE

' All VCCs must be inspected within 4 hours4.62963e-5 days <br />0.00111 hours <br />6.613757e-6 weeks <br />1.522e-6 months <br /> to verify that all of the VCC inlet and outlets are not blocked or obstructed (NAC-UMS Tech Spec A5.4).

• At least one-half of the inlets and outlets on each VCC must be cleared of blockage within 24 hours2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br /> of the beginning of the event to restore air circulation.

INITIALS 13.3.l1 OBTAIN permission from ISFSI Shift Supervisor to enter the ISFSI Pad Area.

B.3.2 INSPECT the air inlet screens.

Page 6 of 12

ISFSI Emergency Operating Procedure EO-2 Rev. 1 ATTACHMENT B BLOCKAGE OF HALF OF THE AIR INLETS ON A VERTICAL CONCRETE CASK (Page 2 of 2)

INITIALS

_B.3.3 REMOVE any debris on the outside of the air inlet screens using a broom or other long handled tool.

B.3.4 REMOVE any debris on the inside of the air inlet screens. The following additional guidance applies:

• Due to the potential for high dose rates, RP coverage is required for VCC screen removal.

0 To minimize dose exposure, long handle tools should be used as much as practical.

• A 15/16" wrench is required to remove or install the inlet screens.

• When installing the VCC inlet screen, install the lower bolts first for a proper fit.

B.3.5 For debris that is not easily accessible or if damage is noted, INITIATE a Work Control Request in accordance with procedure AD-5, ISFSI Work Control Program.

B.3.6 MONITOR the VCC temperature in accordance with procedure OP-1, ISFSI Temperature Monitoring Program.

B.3.7 INITIATE a Condition Report in accordance with procedure AD-7, Corrective Action Program to document the condition. Based on the nature of the debris, immediate corrective actions to prevent recurrence may be warranted.

B.3.8 IF at any time during the temperature monitoring the AT exceeds 102'F, PROCEED to Attachment E, Degraded VCC Thermal Performance (AT >

102°F).

Page 7 of 12

ISFSI Emergency Operating Procedure EO-2 Rev. I ATTACHMENT C FAILURE OF INSTRUMENTATION ON A VERTICAL CONCRETE CASK (Page I of 2)

C.A AUTOMATIC ACTIONS None C.2 IMMEDIATE ACTIONS C.2.1 NOTIFY the ISFSI Shift Supervisor.

C.2.2 NOTIFY the ISFSI Manager or designee.

C.3 SUBSEQUENT ACTIONS WARNING Loss of shielding may not be visually evident.

CAUTION Due to the potential radiation hazard near the surface of the concrete cask and radiation.

streaming from the air inlets and outlets, personnel should practice ALARA principles:

0 Maximize distance from the air vents and minimize stay time around the concrete cask.

• Do NOT remove the VCC inlets or outlets screens without qualified HP personnel present.

INITIALS C.3.1 IF the cask Temperature PLC monitor is available, THEN determine which VCC temperature(s) have failed.

C.3.2 IF one or more VCC average temperature indication is out of service, THEN verify the heat removal system operability by use of a calibrated pole mounted thermocouple every 24 hours2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br /> (NAC-UMS Tech Spec 3.1.6). Reference ISFS[ Drawing EE-6B to determine RTD numbering sequence on a VCC.

C.3.3 Perform manual differential temperature calculations for casks that do not have all four outlet temperature RTDs operable by adding all four outlet temperature readings (PC can be used to record VCC outlet temperatures that are still operable), dividing the sum by four, and then subtracting the average ambient temperature.

ATTACHMENT C Page.8 of 12

ISFSI Emergency Operating Procedure EO-2 Rev. I FAILURE OF INSTRUMENTATION ON A VERTICAL CONCRETE CASK (Page 2 of 2)

INITIALS C.3.4 Perform daily manual differential temperature calculations for all casks if all ambient temperAture RTDs fail.

C.3.5 Repair the failed temperature detector(s) as soon as possible.

C.3.6 IF the VCC Temperature PLC and/or PC systems have failed and cannot be rebooted, THEN arrange for the computer vendor to come on site to repair the PLC and/or PC.

• IF the PLC system is out of service for 24 hours2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br /> or more, THEN a calibrated pole mounted thermocouple must be used to determine VCC differential temperature every 24 hours2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br /> (NAC-UMS Tech Spec 3.1.6).

• Notify the ISFSI Manager or designee of the loss of the PLC as soon as practicable.

C.3.7 IF the VCC Temperature PLC monitoring station had to be abandoned, THEN determine how long the station will be inaccessible.

IF the PLC system is unavailable for 24 hours2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br /> or more, THEN a calibrated pole mounted the*rmocouple must be used to determine VCC differential temperature every 24 hours2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br /> (NAC-UMS Tech Spec 3.1.6).

Notify the ISFSI Manager or designee of the loss of the PLC as soon as practicable.

C.3.8 After cask temperature monitoring equipment has been repaired or access to the PLC has been regained, verify operability of the Temperature Monitoring System and ensure that all VCC differential temperatures are within administrative limits.

C.3.9 INITIATE a Condition Report in accordance with Corrective Action Program to document the condition.

Page 9 of 12

ISFSI Emergency Operating Procedure EO-2 Rev. 1 ATTACHMENT D SMALL RELEASE OF RADIOACTIVE PARTICULATE FROM THE CANISTER EXTERIOR (Page I of 1)

D. 1 AUTOMATIC ACTIONS None D.2 IMMEDIATE ACTIONS D.2. 1 NOTIFY the ISFSI Shift Supervisor.

D.2.2 NOTIFY the ISFSI Manager or designee.

D.3 SUBSEQUENT ACTIONS INITIALS D.3.1 Do not allow entry to the ISFSI Pad Area until a contamination survey has been performed.

D.3.2 Qualified HP personnel shall PERFORM a detailed radiological contamination survey in accordance with Radiological Surveys to determine the extent of contamination.

D.3.3 ISOLATE the area where contamination was found to minimize the spread of contamination.

D.3.4 REMEDIATE any contamination in the. area in accordance with the Radiation Protection Manager's (or designee) instructions.

D.3.5 INITIATE a Condition Report in accordance with AD-7, Corrective Action Program to document the event.

Page 10 of 12

IS FS I Emergency Operating Procedure EO-2 Rev. I ATTACHMENT E DEGRADED VCC THERMAL PERFORMANCE (AT > 102 0 F)

(Page 1 of 2)

E. I AUTOMATIC ACTIONS None E.2 IMMEDIATE ACTIONS E.2.1 NOTIFY the ISFSI Shift Supervisor.

E.2.2 NOTIFY the [SFSI Manager or designee.

E.3 SUBSEQUENT ACTIONS INITIALS E.3.1 Log entry into Required Action A. I of LCO 3.1.6 of the NAC-UMS Technical Specification.

E.3.2 INSPECT the air inlet screens.

E.3.3 REMOVE any debris on the outside of the air inlet screens using a broom or other long handled tool.

E.3.4 REMOVE any debris on the inside of the airinlet screens. The following additional guidance applies:

• Due to the potential for high dose rates, RP coverage is required for VCC screen removal.

• To minimize dose exposure, long handle tools should be used as much as practical.

0 A 15/16" wrench is required to remove or install the inlet screens.

0 When installing the VCC inlet screen, install the lower bolts first for a proper fit.

E.3.5 For debris that is not easily accessible or if damage is noted, INITIATE a Work Control Request in accordance with procedure AD-5, [SFSI Work Control Program.

Page t1 of 12

ISFSI Emergency Operating Procedure EO-2 Rev. I ATTACHMENT E DEGRADED VCC THERMAL PERFORMANCE (AT > 102-F)

(Page 2 of 2)

INITIALS E.3.6 If the VCC Heat Removal, System is not restored to an operable (AT >

102'F) status within 8 hours9.259259e-5 days <br />0.00222 hours <br />1.322751e-5 weeks <br />3.044e-6 months <br /> of the event, PERFORM the following on the affected VCC immediately and every 6 hour6.944444e-5 days <br />0.00167 hours <br />9.920635e-6 weeks <br />2.283e-6 months <br />s:

a. MEASURE and RECORD the ISFSI ambient air and temperatures of the air outlets of each affected VCC in accordance with OP-I, ISFSI Temperature Monitoring Program.

b. Continue until the difference between the average VCC air outlet temperature and average ISFSI ambient temperature is <102 'F.

E.3.7 Log exit from required Action A. 1 of LCO 3.1.6 of the NAC-UMS Technical Specification after operability is achieved.

E.3.8 INITIATE a Condition Report in accordance with procedure AD-7, Corrective Action Program to document the event.

Page 12 of 12

MAINE YANKEE 321 OLD FERRY ROAD WISCASSET, ME 04578 ATTN: DOCUMENT CONTROL DESK USNRC WASHINGTON DC 20555