FENOC Data Date ThIE: 2/17/2020 7:25:09; Davis-Besse Nuclear Po\\er Station AM: !~nsni~ ~!~rt. ______. CopyHolderNunber: 1665 Na~: OOC. CONlROL DESK Trarnmittal Batch Nunber: DB-02172020- Location!Address: OFFSI1Ei Attention:Division ofPreparedness and Resporne U.S. Nuclear RegulatoryComnission Washington, Trilii<;mittalDate: 2/17/2020 · . 38967 pc 20555-0001 . 7:25:09 AM - ·- - .. - -· .- - - Unit Docmnmt Nmmer Doc Type Sheet/Section Revision Version Change Type Change Nmmer Document Status HC CD TOCl TOC2 Changes Distribution Code DBI RA-EP-02810 PROC 0016 PROCEDURECORRECTION APPROVED I O EPON EPOC I

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Davis-Besse Nuclear Power Station

EMERGENCY PLAN OFF NORMAL OCCURRENCE PROCEDURE

RA-EP-02810

TORNADO OR HIGH WINDS

REVISION 16

• Prepared by: P. J. Smith Procedure Owner: Emergency Response Manager

02/17/20 Effective Date:

LEVEL OF USE: IN~FIELD REFERENCE • l

2 RA-EP-02810 Revision 16 TABLE OF CONTENTS • 1.0 PURPOSE •...... :...... :...... :...... ; ...... 3

2.0 REFERENCES ...... 3

3.0 DEFINITIONS ...... , ...... _, ...... 3

4.0 RESPONSIBILITIES _...... _._...... ,...... , ...... ~.'...... : ...... -...._ ...... , ..... :...... 5

5.0 INITIATING CONDITIONS ...... 5 ' ~

6.0 PROCEDURE ...... '...... ,...... ,6

6.1 Activation ...... _.. ,...... , ... , ... _..... :_...... '..·-··,·····:············ ... ,-., ...... 6

6.2 Operation During a Watch, S~vere Thunder~t~m1 Watch, ..or High, ':'7ind Watch in Ottawa County ...... :.. ·...... :.: ... :... .".·..... :· ... :: ... : ...... ':.'.-. .' .. :.. ·:.:.~ .. ·.: ... :· ...... -...... :...... 8

6.3 Operation Duri~g a , s·even; Thunde{stbriii Waniing,H1gh Wind Warning, or Report of a Tornado Sighting riear the Plant in Ottawa Coufity ...... ·.. '...... '.'...... 8

6.4 Follow-up Actions Following Tornado Striking Station.:-...... ,· .... : ... ;.· ... ;.: ... :...... ;: ...... 10

. . ~ . , . • ., 7 .0 FINAL CONDITIONS .... :... .' ...... '.. :.:.. .'..... :...... :...... :...... "...... , .. -...... 12

8.0 RECORDS ...... '...... 13

COMMITMENTS ...... 14

• ,- 3 RA-EP-02810 Revision 16

• 1.0 PURPOSE

This procedure describes the actions that shall be taken when weather conditions favor the formation of tornadoes, , and during periods of high winds.

2.0 REFERENCES

2.1 Developmental

.. 2.1.1 Davis-Besse Nuclear Power Station Emergency Plan ..

2.1.2 NUMARC 87-00, Guidelines and Technical Bases for NUMARC Initiative· Addressing Station Blackout at Light Water Reactors

. . . . . ' . ' 2.1.3 NOP-OP-1003, Grid Reliability Protocol

2.2 · Implementation

2.2.1 · · RA-EP.:.01500, Emergency Clas'sification

··- 2.2.2 'DB-OP-02550: DJ.Fuel ·storage Abnorfu.al Events

2.2.3 -. DBBP-Or~-ooq, D~idance on QperatioJ:?- pf Spent Fuel Ppol Train Bay (Do9r #300) and North Trai1,1 Bay ;Rolh.\p Poor (Door #334) . . . •. '''· ' : . . 2.2.4 DB-OP-02547, Sperit Fuel Pool Cooling Malfunctions, . . . .. ' '• . . ·. . . . • Support 2.2.5 NORM-LP-7221, Davis-Besse Flooding Mitigation Strategy Assessment ··Document·· ·

3.0 DEFINITIONS

3.1 HIGH'WIND ALERT:__ A riotice issued by the company's meteorological services vendor to the site if there is the potential for development of a flooding event if sustained winds greater than 40 mph for two (2) hours or more are expected with wind direction coming from between 15 degrees and 90 degrees.

3.2 HIGH WIND WARNING - A notice issued by the (NWS) when either of the following conditions are EXPECTED: sustained winds at least 40 mph or higher for one hour or more, OR wind gusts of 58 mph or higher for any duration.

3 .3 HIGH WIND WATCH - A notice issued by the NWS when either of the following conditions are POSSIBLE: sustained winds at least 40 mph or higher for one hour or more, OR wind gusts of 58 mph or higher for any duration . • 4 RA-EP-02810 'l Revision 16

3.4 SEVERE WARNING - A notice issued by the NWS when. either .a severe thunderstorm is indicated by radar or a spotter reports a thunderstorm producing hail one inch or larger in diameter (quarter size), and/or winds equal or exceeding.58 miles an hour. • 3 .5 SEVERE THUNDERSTORM WATCH - A notice issued by the NWS when conditions are favorable for the development of severe thunderstorms in and close to the watch area. A severe thunderstorm by definition is a thunderstorm that produces ·one inch or larger hail in diameter (quarter size), and/or winds equal or exceeding 5 8 miles an hour. · _,

3 .6 TORNADO WARNING - f\ l).Otice issued by the NWS when ·a tornado is indicated by radar or sighted by spotters......

3.7 - A notice issued by the NWS when co~ditions'are favorable for the development of tornadoes.

3.8 WARNING - A warning is issued by the NWS when a ~azardous weather or hydrologic event is occurring, is imminent," or has a very high prcibabi\ity of occurririg .. Awarning is used for conditions posing a threat to life or property'.' ' .;;; ... ·. ' . - ' . •

3 .9 \VATCH ~ A watch is issued by thiNWS \\Theil th~ risk of i hai~rdo~s weather or hydrologic event has· increased significantly; but its occurrertce, :icicilti6h,' ~nd/ot timing is still uncertain. rt . is intended to provide enough lead time so thatthose who need to set their plans in motion can do so. ·

3.10 WIND ADVISORY -Anotfoe issuedby'theNWS wh~~'eitlrer'oftlie·following conditions are EXPECTED: sustained winds' '31 to 39 mph fot at'least an'hou:r, OR any wind gust between 46 and 57 mph. •

• 5 RA-EP-02810 Revision 16

• 4.0 RESPONSIBILITIES ·

4.1 The Shift Manager shall be responsible for:

4.1.1 Notifying the Security Shift Supervisor of a tornado watch or· warning, severe thunderstorm watch or warning, high wind. watch or warning, or any on-site condition that meets the.definition of a watch or warning ( e.g., sustained winds at least 40 mph or higher for· one hour using M006, lO M wind speed).

4. L2 ·· •Notifying the Duty Team to include the On-Call Duty Eme~gency Resp~nse individual of a tornado watch or warning, or severe thunderstorm watch or warriing, or high wind watch qr warning,.

4.2 The Security Shift Supervisor shall:

4.2.1 Advise the Shift Ma:riag~~ of ap.y m'es~ag;e's received concernin~ a tornado watch or ,, warning, 0~ severe thunde~st6rm wi;ltch or warning, or high wind wa!ch or warning.

4.2.2 . Ensur.e tornado warning, severe thµnderstorm warning, high wind warning an4 All . Cle~ are ~o~iw~d' oyer.t.hf bwner Controlled Area Public Address System; .. . ' • . ' : ., /. . . \ • ! --~ ; ! . • • _.. . • .

. ' .. ·- NOTE4.2.3

Notificatjqn o(.Qwn~r Controlled,Area personnel is dependent upon shift manning and.ie~thei· coµipen.satory measures th~t 1I1ay be in. effect. .

• 4.2.3 Ensure Security notifies individuals in remote areas of the Owner Controlled Area of a tornado warning.

5.0 INITIATING CONDITIONS

This procedure shall be utilized when the Control Room has been made aware of a tornado watch or warning, severe thunderstorm watch or warning, high wind watch or warning, or any on-site condition that meets the definition of a watch or warning ( e.g., sustained winds at least 40 mph or higher for one hour using M006, 10 M wind speed).

5.1 The Shift Manager should instruct Control Room personnel to monitor available weather information for adverse weather trends or notices from the National Weather Service .

• 6 RA-EP-02810 Revision 16

6.0 PROCEDURE

NOTE6.l Steps in Section 6.1 may be done in series or parallel. . . - ' •

6.1 Activation

6.1.1 The CoritrolRoom·operatbr'shall:

a. Inform the Shift Manager of a ~ornado watch or warning, or severe thtinderstomi watch or warning;' o~ high wind watch or warning for Ottawa .. County· or any on~site condition that nie~ts th~ ·definition of a watch or warnfog (e:g., sustaitied:wirtds '.a:tleast 40 mph or higher for one hour using M006, 10 M wind speed).

i : b. Closely and continuously monitor.. th'e Contr61 Room panels to determine any effects on instrumentation, controls, or statiqn operations. ' " • ' > '·; I ." - -:; : • .' • ~ '. • • • •

NOTE 6.1'.2 ':.· : l ~ ' ~ ·,. '. ; \ ·. ;

1. Ottawa County on rec~iving a report from a Qredible spwc~ ?f 11- tom,,ado sigl).ting in Ottawa County or receiving from the National Weather Service aT6P1.iicic.tWarning "'.ill sound the ·county warning . . . . ', ' . . . ' ~· . ,,j . .'. ~ . j: . ' , ' sirens.

2. At the discretion of the Shift Manager, actions in 'Section 6.3 may be taken at any time.

3. Use of rope to secure material in or near the Swit~hyard is prdhibited.. • ' ; ~ ......

WARNING 6.1.2

1. Weather conditions such as high winds, lightning or other conditions may make inspection of outside areas hazardous.

2. may occur with little or no·warning. They may occur pri6rto the National Weather Service ot Ottawa Gounty issuing the warning. · . . .

~-'. . 6.1.2· At the discretion 6fthe Shift . . Manager:; . . .

a. Direct an inspection of the Protected Area and switchyard for potential missiles and reduce missile potentials where practical. Evaluate the area in and around the switchyard for additional restraints or removal.

• Identified missile hazards shall be relocated away from the switchyard, moved indoors or securely immobilized by appropriate means. • • Temporary equipment shall be relocated away from the switchyard or restrained. 7 RA-EP-02810 i._.. •. Revision 16

• Doors, gates and panel doors shall be tightly fastened. · • Restore temporarily impaired tornado barriers ( e.g. dampers, doors, missile shields, etc.). • Loose equipment and debris shall be restrained or removed . • • Staged materiai not actively in use shall be restrained or removed . .. Construction material shall be restrained or removed. • Close any turbine building roof vents that are open.

b. Evaluate ongoing maintenance activities and expedite the restoration of important plant systems and components to service .

C. . Direct that_ outsicie\;anes are secure by raising,~ll crane hooks'to within 6 ·. inch~$- of'the limit swifohes and lowerip.g' the booms fully, or are placed in a 's~fe conditiqn.;dep~ndingon the crane type. . , A ' • '•• ' ' "~• ' A ;

d. Stop unnecessary activities such as fuel handling, underwater diving

oper~t.ion~, e,tc;.. . i • ' ,'.

e. · Do~;#300.arid#334 sho~ici be.oper~ted as'pe~ DBBP-OPS-0012, Guidance on Operation of SpentFµel.Pool Train Bay (Door #300) and North Train Ba:y Rollup Door (Door'#334) · ·,

f. . ? . bii'.~ct tl~~t ~~ath~i cohditiori;! be mo~itored via focal televi~ion ch~nn~l or . ' . . ; ·. :·· : . ,\' . . . ,. ) - -. .' .. •. . ~. ·. . ' . . ·- . . ' . . . . .web \veathei site such. as Weather .com or Intellicast.coni .

:.. NOTE 6.1.3 • Parts of the path between. Serv:ice Building 7 and, the Protected Area is at 579' eie~ation, which makes this'areaprone to early flooding. Actions to relocate the FLEX N+ 1· equipment to higher · ground should be taken to ensure the equipment can be deployed . into the Protected Area. . . ' ......

6.1.3 IF the company's meteorological services vendor issued a HIGH WIND FLOOD .,ALERT notice as ~~fined in Secti9n 3.0,.Definitions,. THEN Take action to ensure that the_F~EXN+ 1 equipment.is relpcated:from Service .· Building 7 to the parking lot near the P AF. The required FLEX N+ 1 equipment is discussed in Section 7:0 ofNORM-LP-7221,Davis-Besse Flooding Mitigating · Strategy Assessment Suppprt ~ocument. To support availability of the equipment, the relocation shall be completed within 2 hours of notification. • 8 RA-EP-02810 Revision 16

NOTE6.2 Steps in Section 6.2 may be done in series or parallel. . • 6.2 Operation During a Tornado Watch, Severe Thunderstorm Watch, or High Wind Watch in Ottawa· County

6.2.1 In the event of a: tornado watch, or severe thunderstorm watch, or high wind watch for areas which include the_.power station, the Shift Man~ger shall notify:

a. The Security Shift Supervisor · .

b. · The Duty.Team to include the On-CaUDuty Emergency Response individual of a tornado watch, sever'Mhunderstorm watch, or high wind watch.

6.2.2 In the event of a tornado watch, the•Security Shift Supervisor shall:

a. Direct security patrols to report any tornado sightings to the Control Room.

b. · i Advise the Shift Manager on. any:messages received concerning tornado . information, · · - ' · ·.·. : 'o

NOTE6.3

I. All of the applicable actions in Section 6.3 should be taken on receiving a Tornado Warning or report from a credible source of a tornado sighting near the plant. The Shift Manager will determine credibility of the source> •

2. During those outages when a construction opening is cut into the containment shield building and/or containment reference the appropriate outage document for additional guidance for establishing containment integrity. '

3. Steps in Section 6.3 may be done in series or parallel.

'6.3· Operation During a Tornado Warning, Severe Thunderstorm Warning, High Wind Warning or Report of a Tornado Sighting near the Plant in Ottawa County

6.3.1 The Shift Manager shall ensure:

a. Announcement of the tornado ~arning/severe thunderstorm warning, high wind warning, or tornado sighting near the plant over the Gaitronics System. Dir~ct employees to take.cover in lower levels-of buildings during a tornado ·warning or sighting near the site:

1. · : IF contaimnent closure is not set during a tornado warning or tornado . - i. sighting riear the plant, > ' . • THEN announce ''Establish Containment Closure". 9 RA-EP-02810 '· / ~-- Revision 16

b . Notify the following of the tornado warriirig, severe thunderstorm warning, • high wind warning, or tornado sighting near the plant: . CAUTION 6.l.1.b.l

Notification of O~ner Controlled Area personnel is dependent upon shift manning and weather compensatory measures that may.be _in effect.··

1. Security Shift Supervisor, · ·

~--··... a) Direct security:to announce over the Owner Contr9lled Area ·· · J>.ublicAddress System that a Tornado Warning, or severe Thunderstorm Warning, or High Wind warning has been ·... ·declare.d. Direct.employees to take cover in lowerlevels of buildings during a tornado warning or sighting near the site.

b) Ensure that Security personnel inform individuals in remote areas ·.. ::- :::,rofthe Owner,Controlled Area'(OCA) about the tornado,waming, severe thunderstorm warning or high wind warning as time and . __ ~011:~_itions_pe~it.

' .) 2. The Duty Team to include the On-Call Duty Emergency Response individu.a.l. .·

j: .. • C. IF a tornado warning is issued or a rep_or): of.a tornado sighting near the plant is received, . THEN .perform the following steps, as applica.~le.,, .

1. In Modes 1 through 4:

a) Instru9t sta~ion pe~sonnel to prepare for a rapid shut-down of the plant.

b) Ins,truct station personnel to,stop fuel handling operations in the AlPCiliary ;Building'. . · · · · · · · .. .

2. In Modes 5 and 6 o~ ,when. the reactor is ·defueled:

: :" ___ a)_ ;' Order all ~tl handling operations suspended.

b ~ ·.·. IF fuei is being supported from a ~rane or a bridge, THEN order _it placed into a safe storage location.

:P) Verify tha~ cont~linm,.entclos:ure has been established to the maxim~ exten~ practi,cal to. include installing the containment • . ..J~:qµiJnnent Hat~h.. . .. 10 RA-EP-02810 Revision 16

3. Suspend all movement or releases of radioactive waste until the tornado • warning has been canceled.

4. Order all nonessential station operations halted.

5. Use RA-EP-01500, Emergency Classification, to determine the proper emergency classification, if any, and take appropriate actions.

6. Notify the System Control Center (SCC) Dispatcher

NOTE.6.4

Steps in Section 6.4 mar be done ip.Beries or parallei.

6.4 Follow-up Actions Following Tornado Striking: Station ...

6.4.1 The Control Rqolll Operator s~all:

a. Monitor the control pan~ls.tQ d<::t~rµitµe.the effect of the tornado, if any, on instrumentation, controls·, or s~atf9µ qpt!r~tiqns."

b. Notify the Shift Manager of any _a,bnoi;µial ind~cations_.

C. Verify that there is no abno:i;tJ!aJ ,~UlJ.lP pump operation and that tank levels are stable. •; ~ -.-:: < • d. Verify the operability of systems or components not running at the time of the . t()rnii.do before relying upon them.;:

6.4.2 The Shift Manager shall direct a walkdown of the station.

Personnel involved in the walkdowns shall at a minimum look for: o Indication of physical or missile damage o Indication of atmospheric introduction to area normally protected by a structure o Leaking fluids o Deformed systems, structures or components o Broken gauge / instrumentation damage o Material that is hanging from or has the potential to fall onto switchgear or distribution system wiring

Particular attention should be paid to the following areas:

a. EDG Fuel Oil Storage Tank (POST), or "Week Tank"·

b. EDG Day Tank Flame Arrestor and Exhaust

C. Borated Water Storage Tank (BWST). d. Auxiliary Feedwater (AFW) Exhaust Missile Shield • 11 RA-EP-02810 Revision 16

e. Intake Structure • f. · .Auxiliary Building. g. Spent Fuel Pool.

• If SFP cooling or inventory is lost, REFER TO DB-OP-02547, Spent Fuel . Pool Cooling Malfµnctions ..

h. ·· Blowout panels in Mechanical I_>enetration Room #4

i. Doors on the east wall of the Auxili~ Building (322, 323A, 327,328,427, 428,' 512 & 'SI4) a:fong;Withelectrical &·mechanical penetrations :on the east . wall of the. Auxiliary Building

___ j. AFW suction' and tninimum recirculation piping in the turbine building

k. (3) three cable bus periefrations into-Rooms 323 & 325

L 'T>fy Ft1el'St6rage'area. REFER TO DB-OP-02550, Dry Fuel Storage;,_ AbriorrriaLEvents. : ..

m. M~in switcny~rd· · ·• ·: · ··

n. · · .. · Main'and· statfup frarisforrriers • 6.4.3 The Security Shift Supervisor shall: a . Direct security patrols to report· any abnormal conditions.

• . : '. .. , 12 RA-EP-02810 Revision 16

7.0 FINAL CONDITIONS

Use of this procedure shall be terminated when the tornado watch or warning; or severe thunderstorm watch or warning, or high wind watch or warning has been canceled. •

7.1 The Shift Manager shall ensure:

___ 7.1.1 IF an emergency has been declared in accordance with RA-EP-01500, Emergency Classification, THEN, take actions accordingly.

---7 .1.2 Announcement is made over the Gaitronics system that the tornado, severe thunderstorm or high wind threat has expired. , - 1 ;'' -

__ 7.1.3 REFER TO DB-OP-02550, Dry Fuel Storage Abnormal Events.

---7.1.4 Notify the following when the watch or warning has expired:

• Security Shift Supervisor

• The Duty Team to include the On-Call Duty Emergency Response Individual.

• IF wind speeds as read on MET Tower computer point M006, were at or greater than the HIGH WIND WARNING levels as defined in Section 3.0, Definitions, • THEN request Supervisor, Nuclear Work Planning Services and the Superintendent, Nuclear Work Planning to have an Infrared Thermography inspection of the switchyard through the main and startup transformers performed. This inspection will typically be performed the next business day.

---7.1.5 IF the FLEX N+ 1 equipment was relocated due to a HIGH WIND , THEN return the FLEX N+ 1 equipment to normal storage in Service Building 7.

7 .2 The Security Shift Supervisor shall:

___ 7 .2.1 Direct security to announce that the tornado warning, severe thunderstorm warning, high wind warning has expired over the Owner Controlled Area Public Address System. • 13 RA-EP-02810 Revision 16

• 8.0 RECORDS

8.1 IF the following quality assurance records:are completed by this procedure during a classifiable event, THEN the records shall be processed and retained as part of the Event Package in accordance with RA-EP-02720, Recovery Organization, OTHERWISE the following quality assurance records completed by this procedure shall be Usted on .the Nuclear Records List,. captured, and submitted to Enterprise Records Management in accordance with NOP-SS-3300: ·

8.1.1 None

8.2 The following non-quality as.suranGe records ·are completed by. this procedure and may be captured and submitted to Enterprise Records Management in accordance with NOP-SS-3300:

8.2.1 None

•

• 14 RA~EP-02810 Revision 16

COMMITMENTS

None •

•

•