ML14164A065

Attachment 5, Discussion of Revision to the Radiological Emergency Plan Annex, EP-AA-1004, NEI 99-01, Rev. 6, Development of Emergency Action Levels for Non-Passive Reactors, Enclosure 5B and 5C, Dr 3-77 - Dr 3-160

ML14164A065
Person / Time
Site:	Dresden
Issue date:	05/30/2014
From:	Exelon Generation Co
To:	NRC/FSME, Office of Nuclear Material Safety and Safeguards, Office of Nuclear Reactor Regulation
Shared Package
ML14164A053	List: ML14164A054 ML14164A055 ML14164A056 ML14164A058 ML14164A060 ML14164A061 ML14164A062 ML14164A063 ML14164A064 ML14164A065 ML14164A066 ML14164A067 ML14164A068 ML14164A069 ML14164A071 ML14164A073 ML14164A076 ML14164A079 NEI 99-01, Braidwood, Units 1 and 2, Attachment 2, Discussion of Revision to the Radiological Emergency Plan Annex, EP-AA-1001, NEI 99-01, Rev. 6, Development of Emergency Action Levels for Non-Passive Reactors, Enclosure 2A, and 2B, Cover Through Pa NEI 99-01, Byron, Units 1 and 2, Attachment 3, Discussion of Revision to the Radiological Emergency Plan Annex, EP-AA-1002, NEI 99-01, Rev. 6, Development of Emergency Action Levels for Non-Passive Reactors, Enclosures 3A, 3B, Cover - by 3-74 NEI 99-01, Byron, Units 1 and 2, Attachment 3, Discussion of Revision to the Radiological Emergency Plan Annex, EP-AA-1002, NEI 99-01, Rev. 6, Development of Emergency Action Levels for Non-Passive Reactors, Enclosures 3B, 3C, by 3-75 - by 3-157 NEI 99-01, Clinton, Unit 1, Attachment 4, Discussion of Revision to the Radiological Emergency Plan Annex, EP-AA-1003, NEI 99-01, Rev. 6, Development of Emergency Action Levels for Non-Passive Reactors, Enclosure 4A and 4B, Cover - Cl 3-73 NEI 99-01, Clinton, Unit 1, Attachment 4, Discussion of Revision to the Radiological Emergency Plan Annex, EP-AA-1003, NEI 99-01, Rev. 6, Development of Emergency Action Levels for Non-Passive Reactors, Enclosure 4B and 4C, Cl 3-74 - Cl 3-151 NEI 99-01, Dresden, Units 2 & 3, Attachment 5, Discussion of Revision to the Radiological Emergency Plan Annex, EP-AA-1004, NEI 99-01, Rev. 6, Development of Emergency Action Levels for Non-Passive Reactors, Enclosure 5A and 5B, Cover - Dr 3-76 NEI 99-01, Dresden, Units 2 & 3, Attachment 5, Discussion of Revision to the Radiological Emergency Plan Annex, EP-AA-1004, NEI 99-01, Rev. 6, Development of Emergency Action Levels for Non-Passive Reactors, Enclosure 5B and 5C, Dr 3-77 - Dr 3-160 NEI 99-01, LaSalle, Units 1 & 3, Attachment 6, Discussion of Revision to the Radiological Emergency Plan Annex, EP-AA-1005, NEI 99-01, Rev. 6, Development of Emergency Action Levels for Non-Passive Reactors, Enclosure 6A and 6B, Cover - LS 3-74 NEI 99-01, License Amendment Request to Adopt Emergency Action Level Schemes Pursuant to NEI 99-01, Revision 6, Development of Emergency Action Levels for Non-Passive Reactors. RA-14-032, Attachment 10: Discussion of Revision to the Radiological Emergency Plan Annex for Quad Cities Nuclear Power Station, Page QC 3-69 Through End RA-14-032, Attachment 11: Discussion of Revision to the Radiological Emergency Plan Annex for Three Mile Island Nuclear Station, Page TMI 3-80 Through End RA-14-032, Attachment 7: Discussion of Revision to the Radiological Emergency Plan Annex for Limerick Generating Station. Cover Through Page LGS 3-69 RA-14-032, Attachment 7: Discussion of Revision to the Radiological Emergency Plan Annex for Limerick Generating Station. LGS 3-70 Page LGS 3-155 RA-14-032, Attachment 8: Discussion of Revision to the Radiological Emergency Plan Annex for Oyster Creek Nuclear Generating Station, Page Ocgs 3-76 Through End RA-14-032, Attachment 8: Discussion of Revision to the Radiological Emergency Plan Annex for Oyster Creek Nuclear Generating Station. Cover Through Page Ocgs 3-75 RA-14-032, Attachment 9: Discussion of Revision to the Radiological Emergency Plan Annex for Peach Bottom Atomic Power Station, Cover Through Page PBAPS 3-76 RA-14-032, Attachment 9: Discussion of Revision to the Radiological Emergency Plan Annex for Peach Bottom Atomic Power Station, Page PBAPS 3-77 Through End RA-14-032, Braidwood, Units 1 and 2, Attachment 2, Discussion of Revision to the Radiological Emergency Plan Annex, EP-AA-1001, NEI 99-01, Rev. 6, Development of Emergency Action Levels for Non-Passive Reactors, Enclosure 2A, and 2B, Cover Through Pa RA-14-032, Byron, Units 1 and 2, Attachment 3, Discussion of Revision to the Radiological Emergency Plan Annex, EP-AA-1002, NEI 99-01, Rev. 6, Development of Emergency Action Levels for Non-Passive Reactors, Enclosures 3A, 3B, Cover - by 3-74 RA-14-032, Byron, Units 1 and 2, Attachment 3, Discussion of Revision to the Radiological Emergency Plan Annex, EP-AA-1002, NEI 99-01, Rev. 6, Development of Emergency Action Levels for Non-Passive Reactors, Enclosures 3B, 3C, by 3-75 - by 3-157 RA-14-032, Clinton, Unit 1, Attachment 4, Discussion of Revision to the Radiological Emergency Plan Annex, EP-AA-1003, NEI 99-01, Rev. 6, Development of Emergency Action Levels for Non-Passive Reactors, Enclosure 4A and 4B, Cover - Cl 3-73 RA-14-032, Clinton, Unit 1, Attachment 4, Discussion of Revision to the Radiological Emergency Plan Annex, EP-AA-1003, NEI 99-01, Rev. 6, Development of Emergency Action Levels for Non-Passive Reactors, Enclosure 4B and 4C, Cl 3-74 - Cl 3-151 RA-14-032, Dresden, Units 2 & 3, Attachment 5, Discussion of Revision to the Radiological Emergency Plan Annex, EP-AA-1004, NEI 99-01, Rev. 6, Development of Emergency Action Levels for Non-Passive Reactors, Enclosure 5A and 5B, Cover - Dr 3-76 RA-14-032, Dresden, Units 2 & 3, Attachment 5, Discussion of Revision to the Radiological Emergency Plan Annex, EP-AA-1004, NEI 99-01, Rev. 6, Development of Emergency Action Levels for Non-Passive Reactors, Enclosure 5B and 5C, Dr 3-77 - Dr 3-160 RA-14-032, LaSalle, Units 1 & 3, Attachment 6, Discussion of Revision to the Radiological Emergency Plan Annex, EP-AA-1005, NEI 99-01, Rev. 6, Development of Emergency Action Levels for Non-Passive Reactors, Enclosure 6A and 6B, Cover - LS 3-74 RA-14-032, License Amendment Request to Adopt Emergency Action Level Schemes Pursuant to NEI 99-01, Revision 6, Development of Emergency Action Levels for Non-Passive Reactors. RS-14-115, Attachment 9: Discussion of Revision to the Radiological Emergency Plan Annex for Peach Bottom Atomic Power Station, Page PBAPS 3-77 Through End TMI-14-046, Attachment 8: Discussion of Revision to the Radiological Emergency Plan Annex for Oyster Creek Nuclear Generating Station, Page Ocgs 3-76 Through End
References
NEI 99-01, Rev 6, RA-14-032, RS-14-115, TMI-14-046 EP-AA-1004
Download: ML14164A065 (194)

Text

Dresden Nuclear fresden Annex ExeIon Nuclearw RECOGNITION CATEGORY SYSTEM MALFUNCTIONS MSU76 Initiating Condition:

Loss of all On-site or Off-site communications capabilities.

Operating Mode Applicability:

1,2,3 Emergency Acton Level (EAL): 1. Loss of ALL Table M3 Onsite communications capability affecting the ability to perform routine operations.

OR 2. Loss of ALL Table M3 Offsite communication capability affecting the ability to perform offsite notifications.

OR 3. Loss of ALL Table M3 NRC communication capability affecting the ability to perform NRC notifications.

Table M3 Communications Capability System Onsite Offsite NRC Plant Radio X Plant Paae X Sound Powered Phones X All telephone Lines (Commercial and microwave)

X X X Cellular Phones X X ENS X X HPN X X Satellite Phones X X F i I I

• mI f II w 1. 6066 OT A66 of the followine onco communicav nion moetnoc: (cite-specifie Of communications method 2 Less of ALL of the fallowinn ORQ Gemmuninations s) moetheds:

-"" "3 ...............v wI ...........(c,*ite snocifi lirt ofcomnainsmtds Month 20XX DR 3-77 EP-AA-1004 (Revision XX)

Dresden Annex Exelon Nuclear RECOGNITION CATEGORY SYSTEM MALFUNCTIONS

3. Lecs of ALL of the following NRC 1 OMMUniIatiens (cite specific list Of communications moethod&)Basis: This IC addresses a significant loss of on-site._-w-offsite, or NRC communications capabilities.

While not a direct challenge to plant or personnel safety, this event warrants prompt notifications to Offsite Response Organizations (OROs. and the NRC.This IC should be assessed only when extraordinary means are being utilized to make communications possible (e.g., use of non-plant, privately owned equipment, relaying of on-site information via individuals or multiple radio transmission points, individuals being sent to offsite locations, etc.).EAL #1 Basis aAddresses a total loss of the communications methods used in support of routine plant operations.

EAL #2 Basis aAddresses a total loss of the communications methods used to notify all OROs of an emergency declaration.

The OROs referred to here are listed in procedure EP-MW-114-100-F-01, Nuclear Accident Reporting System (NARS) Form. (see-Develope-Notes).EAL #3 Basis aAddresses a total loss of the communications methods used to notify the NRC of an emergency declaration.

Basis Reference(s):

1. NEI 99-01 Rev 6, SU6 2. EP-MW-1 24-1001 Facilities Inventories and Equipment Tests 3. UFSAR 9.5.2 4. DOA 0010-14 Loss of Off-Site Telephone Communication Systems Month 20XX DR 3-78 EP-AA-1004 (Revision XX)

Dresden Annex Exelon Nuclear RECOGNITION CATEGORY COLD SHUTDOWN / REFUELING MALFUNCTIONS CA12 Initiating Condition:

I Loss of all offsite and all onsite AC power to emergency bussesbuses for 15 minutes or longer.Operating Mode Applicability:

4,5, D Emergency Acton Level (EAL): Note:* The Emeraencv Director should declare the event nromntlv UDOn determinina that the applicable time has been exceeded, or will likely be exceeded.'=I'L A r%*- -A-- -t- .1-j 1--- AL- 61-ý -at. -J'A *-'-- A.L-A 4ýuC .TCUIL iuirtruiuu.~r i ~utuuiu. ur UUIIII1 ILýýn 1.-- ...!IE ~ -L.---mluit Has been ..ueeu.. , OFr Will 11...ly be ec..... .1. Loss of ALL offsite AC power to unit ECCS buses.AND 2. Failure of DG 2(3). shared DG 2/3 and SBO DG 2(30 emeraencv diesel generators to supply power to unit EGGS buses.AND 3. Failure to restore power to at least one unit EGGS bus in < 15 minutes from the time of loss of both offsite and onsite AC power.Z AN I "-!. --ll Ak I 51 % M~I -- ----------- ... -L0C~ 01 ~LL OTTCI!0 ano :'.LL OflEliC :~L i-'owor 10 (SIlO SDOCITIC omoroancv DUCOCI IOU ID m:inuto or lnger.N r-1ý J Basis: SAFETY SYSTEM: A system reauired for safe plant operation, coolina down the plant and/or placing it in the cold shutdown condition, including the EGGS. These are typically systems classified as safety-related This IC addresses a total loss of AC power that compromises the performance of all SAFETY SYSTEMS requiring electric power including those necessary for emergency core cooling, containment heat removal/pressure control, spent fuel heat removal and the ultimate heat sink.I When in the cold shutdown, refueling, or defueled mode, this condition is not classified as a Site Area Emergency because of the increased time available to restore an Month 20XX DR 3-79 EP-AA-1004 (Revision XX)

NuelAar frAetden Annex Exelnn Nucleasr RECOGNITION CATEGORY COLD SHUTDOWN / REFUELING MALFUNCTIONS emergency bus to service. Additional time is available due to the reduced core decay heat load, and the lower temperatures and pressures in various plant systems. Thus, when in these modes, this condition represents an actual or potential substantial degradation of the level of safety of the plant.I Fifteen minutes was selected as a threshold to exclude transient or momentary power losses.Escalation of the emergency classification level would be via IC CS61- or RAS1.Basis Reference(s):

1. NEI 99-01 Rev 6, CA2 2. UFSAR 8.3 3. 12E-2302A, Station Key Diagram 4160V and 480V Switchgears Part 1 4. DOA-6400-01, 138 KV System and 345 KV Alternate Supply Failure 5. DOA 6500-01 4KV Bus Failure 6. UFSAR Fig. 9.5-14 7. UFSAR 9.5.9 8. DOP 6620-05, Powering Unit 2(3) 4KV Busses via the SBO D/G 2(3)9. DGA-1 2 Partial or Complete Loss of AC Power Month 20XX DR 3-80 EP-AA-1004 (Revision XX)

Annoy frA-qd~fn Ann~x Exelnn Nucler~I RECOGNITION CATEGORY COLD SHUTDOWN / REFUELING MALFUNCTIONS CU12 Initiating Condition:

Loss of all but one AC power source to emergency buses for 15 minutes or longer.Operating Mode Applicability:

4,5, D Emergency Acton Level (EAL): Note: The Emergency Director should declare the event promptly upon determining that the applicable time has been exceeded, or will likely be exceeded.The Emoregcncy Director should declare the Unusual Event promptly upon deteminig that 15 mninutes has been exceeded, Or Will likely be exceeded.1. AC Power capability to unit ECCS buses reduced to only one of the following power sources for > 15 minutes." Reserve auxiliary Transformer TR-22 (TR-32)" Unit auxiliary transformer TR-21 (TR-31)* Unit Emergency Diesel Generator DG 2(3)" Shared Emergency Diesel Generator DG 2/3* Station Blackout Diesel Generator DG 2(3)" Unit crosstie breakers AND 2. Any additional single power source failure will result in a loss of ALL AC power to SAFETY SYSTEMS.a. AC power capability to (sitespecific emer.gency buses) is reduced to a single power for 15 minutes or .AND b. Any additional single pwer failure will result in loss of all A power t9 SAFEII SYSTEMS.Basis: SAFETY SYSTEM: A system required for safe plant operation, cooling down the plant and/or placing it in the cold shutdown condition, including the ECCS. These are typically systems classified as safety-related.

Month 20XX DR 3-81 EP-AA-1004 (Revision XX)

Dresden Annex Exelon Nuclear RECOGNITION CATEGORY COLD SHUTDOWN / REFUELING MALFUNCTIONS This IC describes a significant degradation of offsite and onsite AC power sources such that any additional single failure would result in a loss of all AC power to SAFETY SYSTEMS. In this condition, the sole AC power source may be powering one, or more than one, train of safety-related equipment.

When in the cold shutdown, refueling, or defueled mode, this condition is not classified as an Alert because of the increased time available to restore another power source to service. Additional time is available due to the reduced core decay heat load, and the lower temperatures and pressures in various plant systems. Thus, when in these modes, this condition is considered to be a potential degradation of the level of safety of the plant.An "AC power source" is a source recognized in AOPs and EOPs, and capable of supplying required power to an emergency bus. Some examples of this condition are presented below.-A loss of all offsite power with a concurrent failure of all but one emergency power source (e.g., an onsite diesel generator).

-A loss of all offsite power and loss of all emergency power sources (e.g., onsite diesel generators) with a single train of emergency buses being back-fed from the unit main generator.

-A loss of emergency power sources (e.g., onsite diesel generators) with a single train of emergency buses being back-fed from an offsite power source.Fifteen minutes was selected as a threshold to exclude transient or momentary losses of power.The subsequent loss of the remaining single power source would escalate the event to an Alert in accordance with IC CA12.Basis Reference(s):

1. NEI 99-01 Rev 6 CU2 2. UFSAR 8.3 3. 12E-2302A, Station Key Diagram 4160V and 480V Switchgears Part 1 4. DOA-6400-01, 138 KV System and 345 KV Alternate Supply Failure 5. DOA 6500-01 4KV Bus Failure 6. UFSAR Fig. 9.5-14 Single-Line Electrical Diagram of Station Blackout Generator Ties to Plant Auxiliary Electric System 7. UFSAR 9.5.9 Station Blackout System 8. DOP 6620-05, Powering Unit 2(3) 4KV Busses via the SBO D/G 2(3)9. DGA-12 Partial or Complete Loss of AC Power Month 20XX DR 3-82 EP-AA-1004 (Revision XX)

Dresden Nuclear fr= d=n Ann nv Ex vlon NuclearvI RECOGNITION CATEGORY COLD SHUTDOWN / REFUELING MALFUNCTIONS Month 20XX DR 3-83 EP-AA-1004 (Revision XX)

Dresden Annex Exelon Nuclear Dresden Annex Exelon Nuclear RECOGNITION CATEGORY COLD SHUTDOWN / REFUELING MALFUNCTIONS CA26 Initiating Condition:

I Hazardous event affecting SAFETY SYSTEM needed-required for the current operating mode.Operating Mode Applicability:

4,5 Emergency Acton Level (EAL): 1. a,. The occurrence of ANY of the following hazardous events: " Seismic event (earthquake)" Internal or external flooding event" High winds or tornado strike" FIRE" EXPLOSION" (site sepoific hazards)" Other events with similar hazard characteristics as determined by the Shift Manager AND 2.b. EITHER of the following:

a.__,. Event damage has caused indications of degraded performance in at least one train of a SAFETY SYSTEM needed required by Technical Specifications for the current operating mode.OR b._2L. The event has caused VISIBLE DAMAGE to a SAFETY SYSTEM component or structure needed-required by Technical Specifications for the current operating mode.Basis: FIRE: Combustion characterized by heat and liqht. Sources of smoke such as slipping drive belts or overheated electrical equipment do not constitute FIRES. Observation of flame is preferred but is NOT required if large quantities of smoke and heat are observed.EXPLOSION:

A rapid, violent and catastrophic failure of a piece of equipment due to combustion, chemical reaction or overpressurization.

A release of steam (from hiqh enerqy lines or components) or an electrical component failure (caused by short circuits, grounding, arcing, etc.) should not automatically be considered an explosion.

Such events may require a post-event inspection to determine if the attributes of an explosion are present.Month 20XX DR 3-84 EP-AA-1004 (Revision XX)

Annoy P:v-alnn im, rlar RECOGNITION CATEGORY COLD SHUTDOWN / REFUELING MALFUNCTIONS SAFETY SYSTEM: A system required for safe plant operation, cooling down the plant and/or placing it in the cold shutdown condition, including the ECCS. These are typically systems classified as safety-related.

VISIBLE DAMAGE: Damage to a component or structure that is readily observable without measurements, testing, or analysis.

The visual impact of the damage is sufficient to cause concern regarding the operability or reliability of the affected component or structure.

This IC addresses a hazardous event that causes damage to a SAFETY SYSTEM, or a structure containing SAFETY SYSTEM components, needed-required for the current operating mode, "required", i.e. required to be operable by Technical Specifications for the current operating mode. This condition significantly reduces the margin to a loss or potential loss of a fission product barrier, and therefore represents an actual or potential substantial degradation of the level of safety of the plant. Manual or automatic electrical isolation of safety equipment due to flooding, in and of itself, does not constitute degraded performance and is classified under HU6.EAL 41b 7-#2.a Basis-aAddresses damage to a SAFETY SYSTEM train that is required to be operable by Technical Specifications for the current operating mode, and is in SeF~4e peration since indications for it will be readily available.

The indications of degraded performance should be significant enough to cause concern regarding the operability or reliability of the SAFETY SYSTEM train.EAL 4-42#2..b Basis-aAddresses damage to a SAFETY SYSTEM component that is required to be operable by Technical Specifications for the current operating mode, and is not in Seeive/operation or readily apparent through indications alone, or to a structure containing SAFETY SYSTEM components.

Operators will make this determination based on the totality of available event and damage report information.

This is intended to be a brief assessment not requiring lengthy analysis or quantification of the damage.Escalation of the emergency classification level would be via IC CS6-- or RAS1.If the EAL conditions of CA2 are not met then assess the event via HU3, HU4, or HU6.Basis Reference(s):

1. NEI 99-01 Rev 6, CA6 Month 20XX DR 3-85 EP-AA-1004 (Revision XX)

Dresden Annex Exelon Nuclear RECOGNITION CATEGORY COLD SHUTDOWN / REFUELING MALFUNCTIONS CU34 Initiating Condition:

Loss of Vital DC power for 15 minutes or longer.Operating Mode Applicability:

4,5 Emergency Acton Level (EAL): Note:= The Emergency Director should declare the event promptly upon determining that the applicable time has been exceeded, or will likely be exceeded.The E.morgoncy Diroctor Should doc-laro the Unusual Event prom~ptly upondtrmnn that 15 mninutos time has bcen exccoded, Or Will likely be oxceodod Voltage is < 105 VDC on required 125 VDC battery buses #2 and #3 for > 15 minutes.Indicated is loss than (site specific bus value) required \Vital DG busos for 15 m inutes Or longor.Basis: SAFETY SYSTEM: A system required for safe plant operation, cooling down the plant and/or placing it in the cold shutdown condition, including the ECCS. These are typically systems classified as safety-related.

This IC addresses a loss of Vital DC power which compromises the ability to monitor and control operable SAFETY SYSTEMS when the plant is in the cold shutdown or refueling mode. In these modes, the core decay heat load has been significantly reduced, and coolant system temperatures and pressures are lower; these conditions inefeaserise the time available to restore a vital DC bus to service. Thus, this condition is considered to be a potential degradation of the level of safety of the plant.As used in this EAL, "required" means the Vital DC buses necessary to support operation of the in-service, or operable, train or trains of SAFETY SYSTEM equipment.

For example, if Train A is out-of-service (inoperable) for scheduled outage maintenance work and Train B is in-service (operable), then a loss of Vital DC power affecting Train B would require the declaration of an Unusual Event. A loss of Vital DC power to Train A would not warrant an emergency classification.

I Fifteen minutes was selected as a threshold to exclude transient or momentary power losses.Depending upon the event, escalation of the emergency classification level would be via IC CA64- or CA53, or an IC in Recognition Category BA.Month 20XX DR 3-86 EP-AA-1004 (Revision XX)

Dresden Annex Exelon Nuclear RECOGNITION CATEGORY COLD SHUTDOWN / REFUELING MALFUNCTIONS Basis Reference(s):

1. NEI 99-01 Rev 6, CU4 2. UFSAR 8.3.2.2.1 Safety Related 125-V System 3. DOA 6900-02(3)

Failure of Unit 2(3) 125 VDC Power Supply 4. Technical Specification Basis B.3.8.5, DC Power Sources -Shutdown 5. Technical Specification Basis B.3.8.4, DC Power Sources -Operating Month 20XX DR 3-87 EP-AA-1004 (Revision XX)

Dresden Annex Exelon Nuclear RECOGNITION CATEGORY COLD SHUTDOWN / REFUELING MALFUNCTIONS CU4" Initiating Condition:

Loss of all onsite or offsite communications capabilities.

Operating Mode Applicability:

4,5, D Emergency Acton Level (EAL): 1. Loss of ALL Table C1 Onsite communications capabilitv affectinQ the abilitv to Derform routine oWerations.

OR 2. Loss of ALL Table Cl Offsite communication capability affecting the ability to perform offsite notifications.

OR 3. Loss of ALL Table C1 NRC communication capability affecting the ability to perform NRC notifications.

TahkoIM (1 (nmmuini-atinne fon~ahilitu System Onsite Offsite NRC Plant Radio X Plant Page X Sound Powered Phones X All telephone Lines (Commercial and microwave)

X X X Cellular Phones X X ENS X X HPN X X Satellite Phones X X 5 .~ ~. ~ %~. SB *~ S ~I5~*U*I B------- J[ I-- -- --I -- -(i-6te coec-Gific list Of communications mnethods)I l iI I I IVi 2. Loss of ALL Of the folloWing ORO communications methods: (cite-ssccfic list Of communications mnethods)Month 20XX DR 3-88 EP-AA-1 004 (Revision XX)

Annex I=xolon fresden Annex Exellon Nuclea~r RECOGNITION CATEGORY COLD SHUTDOWN / REFUELING MALFUNCTIONS

3. Lss- of ALL of the NRC ormmuni.ations methods (siteo Sp icl St Of cO',n'Rammu-nic'.0,-ations moI,' lthed)Basis: This IC addresses a significant loss of on-site_-er-offsite, or NRC communications capabilities.

While not a direct challenge to plant or personnel safety, this event warrants prompt notifications to Offsite Response Organizations (OROs) and the NRC.This IC should be assessed only when extraordinary means are being utilized to make communications possible (e.g., use of non-plant, privately owned equipment, relaying of on-site information via individuals or multiple radio transmission points, individuals being sent to offsite locations, etc.).EAL #1 Basis aAddresses a total loss of the communications methods used in support of routine plant operations.

EAL #2 Basis aAddresses a total loss of the communications methods used to notify all OROs of an emergency declaration.

The OROs referred to here are listed in procedure EP-MW-114-100-F-01, Nuclear Accident Reporting System (NARS) Formkseer.

.. .,.Netes.EAL #3 Basis aAddresses a total loss of the communications methods used to notify the NRC of an emergency declaration.

Basis Reference(s):

1. NEI 99-01 Rev 6, CU5 2. EP-MW-1 24-1001 Facilities Inventories and Equipment Tests 3. UFSAR 9.5.2 4. DOA 0010-14 Loss of Off-Site Telephone Communication Systems Month 20XX DR 3-89 EP-AA-1004 (Revision XX)

Exelon Nuclear Dresden Annex Eeo ula RECOGNITION CATEGORY COLD SHUTDOWN / REFUELING MALFUNCTIONS CA53 Initiating Condition:

Inability to maintain the plant in cold shutdown.Operating Mode Applicability:

4,5 Emergency Acton Level (EAL): Note: e The Emergency Director should declare the event promptly upon determining that the apolicable time has been exceeded.

or will likely be exceeded.rL... I~.ii=- =I-z ýIIiui t Liu i 1Iu~ 1 ~ t 1i. :.:u.zu -: ..............

....the a,"li,,able imo has beon .....d.d, or will likely oX.eedod.UNPLANNED rise in RCS temperature

> 212°F due to loss of decay heat removal for >Table C2 duration.Table C2 RCS Heat-up Duration Thresholds RCS Containment Closure Heat-up Status Status Duration Intact Not Applicable 60 minutes*Not Intact Established 20 minutes*Not Established 0 minutes* If an RCS heat removal system is in operation within this time frame and RCS temperature is beina reduced, then EAL #1 is not applicable.

OR 2. UNPLANNED RPV pressure rise > 10 psig as a result of temperature rise due to loss of decay heat removal.1. UNPLANNED ir- cre-e in RCS tmprater, to greater than Q ^^fifm.ýa~

tI%! ý- "p~, ko Arlptin~, *P~nrP pratIi UI if fP1 nnte fh n +6^duration specified in the fGollIin table.Lm m Lm ....... I "--" Month 20XX DR 3-90 EP-AA-1004 (Revision XX) rmafltun Annov Fvtulnn ":,Aaar fDlrne I tln II nnvp FA~rVI I. mIaVI~p RECOGNITION CATEGORY COLD SHUTDOWN / REFUELING MALFUNCTIONS Table: RCS HMoat-Up Durtation Throohol, RCS Status Containment Clocure Heat-up DuratiOn Status reduced inyentoy No i 6- Iil ut Not intact (r Oat reduced Ebloh, 20, *iwente-fPi

[R") Not E ;stabli Fhd

• If an RCS heat removal 6ystemn is in operation within this time frame and RCS temperature is bein~g reduced, the EAL is not applicable.

.~J 1] LPd'.'r.~t~IJ iiii'- nro~uro incro~e aroa~nr man miTo ~nncmc orn~surn '.-~ -~w.v~.~plirrýi

_15-t ý1- Al Ae ~~ i..rr a~~r'~alr~~

w.w......... 0ý ...... ........[PKRJ)lBasis: UNPLANNED:

A parameter chanae or an event that is not 1) the result of an intended evolution or 2) an expected plant response to a transient.

The cause of the parameter change or event may be known or unknown.CONTAINMENT CLOSURE: The procedurally defined conditions or actions taken to secure containment (primary or secondary) and its associated structures, systems, and components as a functional barrier to fission product release under shutdown conditions.

RCS is intact when the RCS pressure boundary is in its normal condition for the Cold Shutdown mode of operation (e.a. no freeze seals, or steam line nozzle Dluas. etc.).This IC addresses conditions involving a loss of decay heat removal capability or an addition of heat to the RCS in excess of that which can currently be removed. Either condition represents an actual or potential substantial degradation of the level of safety of the plant.A momentary UNPLANNED excursion above the Technical Specification cold shutdown temperature limit when the heat removal function is available does not warrant a classification.

The RCS Heat-up Duration Thresholds table addresses an iRe-easerise in RCS temperature when CONTAINMENT CLOSURE is established but the RCS is not intact._i Or RCS in'...ent,; (e.g., mid-loop operation in PWRs). The 20-minute Month 20XX DR 3-91 EP-AA-1004 (Revision XX)

Dresden Annex Exelon Nuclear RECOGNITION CATEGORY COLD SHUTDOWN / REFUELING MALFUNCTIONS criterion was included to allow time for operator action to address the temperature iris___nse.

The RCS Heat-up Duration Thresholds table also addresses an inr, eeaserise in RCS temperature with the RCS intact. The status of CONTAINMENT CLOSURE is not crucial in this condition since the intact RCS is providing a high pressure barrier to a fission product release. The 60-minute time frame should allow sufficient time to address the temperature i..reaserise without a substantial degradation in plant safety.Finally, in the case where there is an in RCS temperature, the RCS is not intact Or is at ..d..d inv.nt..y

[P-VrI, and CONTAINMENT CLOSURE is not established, no heat-up duration is allowed (i.e., 0 minutes).

This is because 1) the evaporated reactor coolant may be released directly into the Containment atmosphere and subsequently to the environment, and 2) there is reduced reactor coolant inventory above the top of irradiated fuel.EAL #2 provides a pressure-based indication of RCS heat-up.Escalation of the emergency classification level would be via IC CS6 or RAS1.Basis Reference(s):

1. NEI 99-01 Rev 6, CA3 2. Technical Specifications 3.6.1.1 3. Technical Specifications 3.6.4.1 4. OU-AA-103 Shutdown Safety Management Program 5. DGP 02-01 Unit Shutdown 6. DOA 0201-04 Loss of Vessel Flange, Shell, or Recirculation (Recirc) Loop Temperature Recorders During Heatup or Cooldown 7. DGP 02-02 Reactor Vessel Slow Fill 8. DIS 0263-19 Reactor Wide Range Pressure Transmitter Calibration Eq.Maintenance Inspection Month 20XX DR 3-92 EP-AA-1 004 (Revision XX)

Nuclear flmsden Annex FvieInn Nucler!I RECOGNITION CATEGORY COLD SHUTDOWN / REFUELING MALFUNCTIONS Initiating Condition:

UNPLANNED ieeaee in RCS temperature Operating Mode Applicability:

4,5 Emergency Acton Level (EAL): Note: CU53* The Emergency Director should declare the event promptly upon determining that the applicable time has been exceeded, or will likely be exceeded.The EmergncRy the Unusual Event promptly upon determining that 15 m*inutes has boon eXceeded, Or Will likely be exced.d.1. UNPLANNED rise in RCS temperature

> 212°F due to loss of decay heat removal.OR 2. Loss of the following for > 15 minutes.* ALL RCS temperature indications AND* ALL RPV water level indications

1. UNPLA.NNED increasorise in RCS temperatu to greater than (cite specific Technical Spciiato cod hu-tdown%~f temper-ature limit).22. Losss of ALL RCS t9emperature and reactor vossoL'RCS level indic-atioen for 15 mninutes or longer.Basis: UNPLANNED:

A parameter change or an event that is not 1) the result of an intended evolution or 2) an expected plant response to a transient.

The cause of the parameter chanae or event may be known or unknown.CONTAINMENT CLOSURE: The procedurally defined conditions or actions taken to secure containment (primary or secondary) and its associated structures, systems, and components as a functional barrier to fission product release under shutdown conditions.

Month 20XX DR 3-93 EP-AA-1004 (Revision XX)

Annoy I:xAIon frawign Anniax Exelnn NuleIasr RECOGNITION CATEGORY COLD SHUTDOWN / REFUELING MALFUNCTIONS I This IC addresses an UNPLANNED ineFeaserise in RCS temperature above the Technical Specification cold shutdown temperature limit, or the inability to determine RCS temperature and level, represents a potential degradation of the level of safety of the plant. If the RCS is not intact and CONTAINMENT CLOSURE is not established during this event, the Emergency Director should also refer to IC CA53.RCS is intact when the RCS pressure boundary is in its normal condition for the Cold Shutdown mode of operation (e.g. no freeze seals, or steam line nozzle plugs. etc.).A momentary UNPLANNED excursion above the Technical Specification cold shutdown temperature limit when the heat removal function is available does not warrant a classification.

EAL #1 involves a loss of decay heat removal capability, or an addition of heat to the RCS in excess of that which can currently be removed, such that reactor coolant temperature cannot be maintained below the cold shutdown temperature limit specified in Technical Specifications.

During this condition, there is no immediate threat of fuel damage because the core decay heat load has been reduced since the cessation of power operation.

During an outage, the level in the reactor vessel will normally be maintained above the reactor vessel flange. Refueling evolutions that lower water level below the reactor vessel flange are carefully planned and controlled.

A loss of forced decay heat removal at reduced inventory may result in a rapid iGireaserise in reactor coolant temperature depending on the time after shutdown.EAL #2 reflects a condition where there has been a significant loss of instrumentation capability necessary to monitor RCS conditions and operators would be unable to monitor key parameters necessary to assure core decay heat removal. During this condition, there is no immediate threat of fuel damage because the core decay heat load has been reduced since the cessation of power operation.

I Fifteen minutes was selected as a threshold to exclude transient or momentary losses of indication.

I Escalation to Alert would be via IC CA6 based on an inventory loss or IC CA53 based on exceeding plant configuration-specific time criteria.Month 20XX DR 3-94 EP-AA-1004 (Revision XX)

Dresden Annex Exelon Nuclear RECOGNITION CATEGORY COLD SHUTDOWN / REFUELING MALFUNCTIONS Basis Reference(s):

1. NEI 99-01 Rev 6, CU3 2. Technical Specifications Table 1.1-1 3. DGP 02-01 UNIT SHUTDOWN 4. DOA 0201-04, Loss of Vessel Flange, Shell, or Recirculation (Recirc) Loop Temperature Recorders During Heatup or Cooldown 5. DGP 02-02 Reactor Vessel Slow Fill 6. DEOP 0010-00 Guidelines for Use or Dresden Emergency Operating Procedures and Severe Accident Management Guidelines

7. DEOP 100 RPV Control, Table A 8. DIP 0260-01 Refuel Outage Reactor Vessel and Cavity Level Instrumentation Month 20XX DR 3-95 EP-AA-1004 (Revision XX)

Annoy flmsden Annex Exelon NucleI~ar RECOGNITION CATEGORY COLD SHUTDOWN / REFUELING MALFUNCTIONS CG6-Initiating Condition:

Loss of RPV inventory affecting fuel clad integrity with containment challenged.

Operating Mode Applicability:

4,5 Emergency Acton Level (EAL): Note:* The Emergency Director should declare the event promptly upon determining that the applicable time has been exceeded, or will likely be exceeded.The Emcrgoncy DircctOr should dcclare- tho Goncral EmorgoncY promnptly upon dotrmiRRng that 30 miRutes has be,, or will likely be vcdod., 1. a. RPV water level < -143 inches (TAF) for > 30 minutes.AND b. Any Containment Challenge Indication (Table 04)OR 2. a. RPV water level unknown for > 30 minutes.AND b. Core uncovery is indicated by any of the following:

• Table C3 indications of a sufficient magnitude to indicate core uncovery.OR" Refuel Floor Hi Range ARM >3000 mR/hr.AND c. Any Containment Challenge Indication (Table 04)Table C3 Indications of RCS Leakaqe" UNPLANNED floor or equipment sump level rise*" UNPLANNED Torus level rise** UNPLANNED vessel make up rate rise" Observation of leakage or inventory loss Month 20XX DR 3-96 EP-AA-1004 (Revision XX)

Dresden Annex I::xelon Nuclear Dresdn Annex iYlAorn Nuclear RECOGNITION CATEGORY COLD SHUTDOWN / REFUELING MALFUNCTIONS

• Rise in level is attributed to a loss in RPV inventory.

Table C4 Containment Challen-ce Indications

• Primary Containment Hydrogen Concentration

> 6% and Oxvqen > 5%* UNPLANNED rise in containment pressure* CONTAINMENT CLOSURE not established*

• Any Secondary Containment radiation monitor > DEOP 300-1 Maximum Safe operating level.* if CONTAINMENT CLOSURE is re-established prior to exceedina the 30-minute core uncovery time limit, then escalation to a General Emergency is not required.1 .a. (Reactor uvossoVRCS level loss than (sito spocifi levol) for 30 minutes OF longer.AND b. ANY indiction fromn the Conta.nment Challenge Table (seo below).2. a. Reactnor ......oelnRCS level cannot be mon-,itoed for 30 minutes Or Ionger.I AN1 b. Core uncovery is indicated by ANY of the following:

-f oLLL Ojl.'kl ^ "ýta zttaf. flflfllrLJ1 ranaltSII b tial \O1L v 'L A

• v AA- 4 F.1 5 511 F* Effatte SOUrree Fafige MORHOF tBut6ittIOR D f J .m .1 %e U.NPLANNEDhI inerease int (ste specitic sume anE.or- tank) levels of sut~icient(Other Site speeific indicationRs)

Month~~~~~~D 3-9E7A- 04(eiso X Month 20XX EP-AA-1004 (Revision XX)

Dresden Annex Exelon Nuclear RECOGNITION CATEGORY COLD SHUTDOWN I REFUELING MALFUNCTIONS AMD G. n ication fr o-m tho Colntaimeent

t. Ch a lle e T abl1,e (s e .e ContainmInt Challng1 TabJl CONTAINMENT CLOSURE not establishedt (Explosive miAr'Ie) e1ists inside containment UNPLANNED increase in eentainment pr-essufe*If CONTAINMVENT CLOSURE is ro cetablishod p~Or to eXceeding the 30 minute time Basis: UNPLANNED:

A parameter change or an event that is not 1) the result of an intended evolution or 2) an expected plant response to a transient.

The cause of the parameter change or event may be known or unknown.IMMINENT:

The trajectory of events or conditions is such that an EAL will be met within a relatively short period of time regardless of mitigation or corrective actions.CONTAINMENT CLOSURE: The procedurally defined conditions or actions taken to secure containment (primary or secondary for BWR) and its associated structures, systems, and components as a functional barrier to fission product release under shutdown conditions.

This IC addresses the inability to restore and maintain reactor vessel level above the top of active fuel with containment challenged.

This condition represents actual or IMMINENT substantial core degradation or melting with potential for loss of containment integrity.

Releases can be reasonably expected to exceed EPA Protective Action Guidelines (PAGI exposure levels offsite for more than the immediate site area.Following an extended loss of core decay heat removal and inventory makeup, decay heat will cause reactor coolant boiling and a further reduction in reactor vessel level. If RCS/reactor vessel level cannot be restored, fuel damage is probable.With CONTAINMENT CLOSURE not established, there is a high potential for a direct and unmonitored release of radioactivity to the environment.

If CONTAINMENT CLOSURE is re-established prior to exceeding the 30-minute time limit, then declaration of a General Emergency is not required.The existence of an explosive mixture means, at a minimum, that the containment atmospheric hydrogen concentration is sufficient to support a hydrogen burn (i.e., at the lower deflagration limit). A hydrogen burn will raise containment pressure and could result in collateral equipment damage leading to a loss of containment integrity.

It therefore represents a challenge to Containment integrity.

Month 20XX DR 3-98 EP-AA-1 004 (Revision XX)

Dresden Annex Exellon Nuclear RECOGNITION CATEGORY COLD SHUTDOWN / REFUELING MALFUNCTIONS In the early stages of a core uncovery event, it is unlikely that hydrogen buildup due to a core uncovery could result in an explosive gas mixture in containment.

If all installed hydrogen gas monitors are out-of-service during an event leading to fuel cladding damage, it may not be possible to obtain a containment hydrogen gas concentration reading as ambient conditions within the containment will preclude personnel access.During periods when installed containment hydrogen gas monitors are out-of-service, operators may use the other listed indications to assess whether or not containment is challenged.

bi:-EAL 2-b#1 Basis ,-Ihe 30-minute criterion is tied to a readily recognizable event start time (i.e., the total loss of ability to monitor level), and allows sufficient time to monitor, assess and correlate reactor and plant conditions to determine if core uncovery has actually occurred (i.e., to account for various accident progression and instrumentation uncertainties).

It also allows sufficient time for performance of actions to terminate leakage, recover inventory control/makeup equipment and/or restore level monitoring.

The inability to monitor RPV-IeveIRPV water level may be caused by instrumentation and/or power failures, or water level dropping below the range of available instrumentation.

If water level cannot be monitored, operators may determine that an inventory loss is occurring by observing changes in sump and/or tank levels. Sump and/or tank level changes must be evaluated against other potential sources of water flow to ensure they are indicative of leakage from the RPV.These EALs address concerns raised by Generic Letter 88-17, Loss of Decay Heat Removal; SECY 91-283, Evaluation of Shutdown and Low Power Risk Issues; NUREG-1449, Shutdown and Low-Power Operation at Commercial Nuclear Power Plants in the United States; and NUMARC 91-06, Guidelines for Industry Actions to Assess Shutdown Management.

Basis Reference(s):

1. NEI 99-01 Rev 6, CG1 2. DEOP 0100-00 RPV Control 3. Technical Specifications 3.3.1.2 4. DOS 0700-01 SRM Functional Test 5. DAN 902(3)-5 E-4 SRM Short Period 6. DEOP 0200-01 Primary Containment Control 7. DEOP 0200-02 Hydrogen Control 8. DEOP 0300-01 Secondary Containment Control 9. USAR Table 6.2-1 10. EP-EAL-0501 Month 20XX DR 3-99 EP-AA-1004 (Revision XX)

Nuel@Ar fres~den Annex ExAelon Nucleanr RECOGNITION CATEGORY COLD SHUTDOWN / REFUELING MALFUNCTIONS Initiating Condition:

Loss of RPV inventory affecting core decay heat removal capability.

Operating Mode Applicability:

4,5 Emergency Acton Level (EAL): Note:* The Emergency Director should declare the event promptly upon determining that the applicable time has been exceeded, or will likely be exceeded.The Em;ergency D~irector should declare the Site Aroa EmergencGy promptly upon detWmining that 30 minutes has been esaieded, or will likely be e 6ecdesd.1. With CONTAINMENT CLOSURE not established, RPV water level < -60 inches OR 2. With CONTAINMENT CLOSURE established.

RPV water level < -143 inches (TAF)* OR 3. a. RPV water level unknown for > 30 minutes AND b. Core uncovery is indicated by any of the following:

• Table C3 indications of a sufficient magnitude to indicate core uncovery.OR" Refueling Floor Hi Range ARM >3000 mR/hr.Table C3 Indications of RCS Leaka e" UNPLANNED floor or eguipment sump level rise** UNPLANNED Torus level rise** UNPLANNED vessel make up rate rise" Observation of leakage or inventory loss*Rise in level is attributed to a loss in RPV inventory.

.a. CONTAINMENT CLOSURE not established.

Month 20XX DR 3-100 EP-AA-1004 (Revision XX)

Dresden Annex Exelon Nuclear RECOGNITION CATEGORY COLD SHUTDOWN / REFUELING MALFUNCTIONSm. (Rai r- Ve s E O L'rRCI fe~ I 1 or N P-1r.' ~ v i lovel0- ioAP mAA F An n o D0 icV --L ..... 3l ll l l;j. a. GGurT INP~ MENJ "LUO U11P esiaDi~sna.

AAND L lit __ __ __JL _ _,IE-~,%f.

rr~IiIrYI

~ I rFtArwI~ ,~, *. .U. I.!A..19. i-earior voesevmriu5

I'e Jr or F --' Pd J IP5 level less than ske-eP e f G e e rt __ lit __ __ __JL ,, n r ,.. r wln ,ý % r 1 %6A ffA- iI I.. I.. .. L .. -1. .1 ..-^ ^vr-- z a =CV12 f-- a =- ý.. zf2z' 2 minutes or longer.ANM I i IRID f IB f m A b. 6 Q Fel-'AGoyew 16 'AG11Ga;eei PY A

• OT tne T9110MAW!e (Site sneeifie r-adiatieft foeniter-)

madine ffeater- than (site seeeifie v-V--+,- , ---rDIXIDI t J .1%* UNPLANNED iftervase ia ýsite sf amVer- tafwj ieveis of suffietent magnitude to indieate eafe uneever-y e (Other- site speeifie indieations)

A Basis: CONTAINMENT CLOSURE: The Procedurally defined conditions or actions taken to secure containment (prima!y or seconda!y for BWR) and its associated structures,§ystems, and components as a functional barrier to fission product release under shutdown conditions.

UNPLANNED:

A parameter change or an event that is not 1) the result of an intended evolution or 2) an expected plant response to a transient.

The cause of the paramete change or event may be known or unknown.This lG addFesser, a signifiGant and pmlenged loss of RPV inventeFy Gentrel and FnakeUp Gapabolity leading to 1MMINENT fuel damage. The lost inventory may be due to a RCS component failure, a loss of configuration control or prolonged boiling of reactor coolant. These conditions entail major failures of plant functions needed for protection of the public and thus warrant a Site Area Emergency declaration.

I Following an extended loss of core decay heat removal and inventory makeup, decay Month 20XX DR 3-101 EP-AA-1004 (Revision XX)

Dresden Annex Exelon Nuclear RECOGNITION CATEGORY COLD SHUTDOWN / REFUELING MALFUNCTIONS heat will cause reactor coolant boiling and a further reduction in reactor vessel level. If RCS/reactor vessel level cannot be restored, fuel damage is probable.Outage/shutdown contingency plans typically provide for re-establishing or verifying CONTAINMENT CLOSURE following a loss of heat removal or RCS inventory control functions.

The difference in the specified RCS/reactor vessel levels of EALs 1 .b and 2.b reflect the fact that with CONTAINMENT CLOSURE established, there is a lower probability of a fission product release to the environment.

In EAL #3.a, the 30-minute criterion is tied to a readily recognizable event start time (i.e., the total loss of ability to monitor level), and allows sufficient time to monitor, assess and correlate reactor and plant conditions to determine if core uncovery has actually occurred (i.e., to account for various accident progression and instrumentation uncertainties).

It also allows sufficient time for performance of actions to terminate leakage, recover inventory control/makeup equipment and/or restore level monitoring.

The inability to monitor RPV-levelRPV water level may be caused by instrumentation and/or power failures, or water level dropping below the range of available instrumentation.

If water level cannot be monitored, operators may determine that an inventory loss is occurring by observing changes in sump and/or tank levels. Sump and/or tank level changes must be evaluated against other potential sources of water flow to ensure they are indicative of leakage from the RPV.These EALs address concerns raised by Generic Letter 88-17, Loss of Decay Heat Removal; SECY 91-283, Evaluation of Shutdown and Low Power Risk Issues; NUREG-1449, Shutdown and Low-Power Operation at Commercial Nuclear Power Plants in the United States; and NUMARC 91-06, Guidelines for Industry Actions to Assess Shutdown Management.

Escalation of the emergency classification level would be via IC CG1-6 or ARGI.Basis Reference(s):

1. NEI 99-01 Rev 6, CS1 2. Technical Specifications Table 3.3.5.1 1 3. UFSAR 5.2.5 4. DEOP 0010-00 Guidelines for Use or Dresden Emergency Operating Procedures and Severe Accident Management Guidelines

5. DEOP 0100-00 RPV Control 6. Unit 2(3) Appendix A Unit NSO Daily Surveillance Log 7. DAN 902(3)-4 A-17 rywetlDrywell Equip Sump Lvl HI-HI 8. DAN 902(3)-4 H-18 D Dywe~lrywell Floor Drn Sump Lvl HI-HI 9. DOA 0040-01 Slow Leak 10. DOP 2000-24 r..ywe. .rywel, Sump Operation Month 20XX DR 3-102 EP-AA-1004 (Revision XX)

Exelon Nuclear Dresden Annex Eeo ula RECOGNITION CATEGORY COLD SHUTDOWN / REFUELING MALFUNCTIONS

11. Technical Specifications 3.3.1.2 12 DOS 0700-01 SRM Functional Test 13. DAN 902(3)-5 E-4 SRM Short Period Month 20XX DR 3-103 EP-AA-1004 (Revision XX)

Dresden Annex Exelon Nuclear RECOGNITION CATEGORY COLD SHUTDOWN / REFUELING MALFUNCTIONS CA64-Initiating Condition:

Loss of RPV inventory.

Operating Mode Applicability:

4,5 Emergency Acton Level (EAL): Note: The Emergency Director should declare the event promptly upon determining that the applicable time has been exceeded, or will likely be exceeded.I E A B n ThnneimenrrirFnr" nmrtnr itniu nnie the~ Alert nrnmm.' iinon Ennmimnine tha~t.4 Crvn inta+ kn knn 14,nnjr Ar H! Mes'n! ka a 1na4r -.-~, ~ .....a. Loss of RPV inventory as indicated by level < -54 inches.OR 1. a. RPV water level unknown for > 15 minutes.AND b. Loss of RPV inventory per Table C3 indications.

Table C3 Indications of RCS Leakage" UNPLANNED floor or equipment sump level rise*" UNPLANNED Torus level rise*" UNPLANNED vessel make up rate rise" Observation of leakage or inventory loss*Rise in level is attributed to a loss in RPV inventory.

I4 ----A-. .i.ý re _ ..1_ 1__1 I --LL___ /-.'.L- __ _=level),dr J 2. a. Reactor sVeVeVVVR level cannot be moFnitored 9fo 15 m nuto or longer AND L I IklIPJ'tl A

!_=I av! -11 IA I I ý__D uL.W'IIIW inrn-AwI MINNT MDCI! Eum ==I~o awlK I6VCIEo~z OUZ0a--------

---

V -- --V beSS nO reacrtonr yosccvt9iV 6 inVeniorV.

Month 20XX DR 3-104 EP-AA-1004 (Revision XX)

I::xAInn fresfd.en Annex Exelon Nucler~I RECOGNITION CATEGORY COLD SHUTDOWN / REFUELING MALFUNCTIONS Basis: UNPLANNED:

A parameter change or an event that is not 1) the result of an intended evolution or 2) an expected plant response to a transient.

The cause of the parameter change or event may be known or unknown.IC addresses conditions that are precursors to a loss of the ability to adequately cool irradiated fuel (i.e., a precursor to a challenge to the fuel clad barrier).This condition represents a potential substantial reduction in the level of plant safety.F-r-EAL #1 Basis--a lowering of water level below -54 inches (site cpo.ific le'.'el) indicates that operator actions have not been successful in restoring and maintaining RPV water level. The heat-up rate of the coolant will iPAeaserise as the available water inventory is reduced.A continuing deGiease rop in water level will lead to core uncovery.Although related, EAL #1 is concerned with the loss of RCS inventory and not the potential concurrent effects on systems needed for decay heat removal (e.g., loss of a Residual Heat Removal suction point). AA ieieaeerise in RCS temperature caused by a loss of decay heat removal capability is evaluated under IC CA53.Fer-EAL #2 Basis ,-tThe inability to monitor RPV-IeveIRPV water level may be caused by instrumentation and/or power failures, or water level dropping below the range of available instrumentation.

If water level cannot be monitored, operators may determine that an inventory loss is occurring by observing changes in sump and/or tank levels. Sump and/or tank level changes must be evaluated against other potential sources of water flow to ensure they are indicative of leakage from the RPV.The 15-minute duration for the loss of level indication was chosen because it is half of the EAL duration specified in IC CS64-If the RPV inentwy water level continues to lower, then escalation to Site Area Emergency would be via IC CS6-1-.Basis Reference(s):

1. NEI 99-01 Rev 6, CA1 2. USAR 5.2.5, Detection of Leakage through Reactor Coolant Pressure Boundary 3. Technical Specification 3.3.5.1, Emergency Core Cooling System (ECCS)Instrumentation

4. DEOP 0010-00 Guidelines for Use or Dresden Emergency Operating Procedures and Severe Accident Management Guidelines

5. DEOP 100 RPV Control Month 20XX DR 3-105 EP-AA-1004 (Revision XX)

Dresden Annex Exelon Nuclear RECOGNITION CATEGORY COLD SHUTDOWN I REFUELING MALFUNCTIONS

6. Unit 2(3) Appendix A Unit NSO Daily Surveillance Log 7. DAN 902(3)-4 A-17 D~ywellDrywell Equip Sump Lvl HI-HI 8. DAN 902(3)-4 H-18 Dyweg#Drywell Floor Drn Sump Lvl HI-HI 9. DOA 0040-01 Slow Leak 10. DOP 2000-24 Diywe#Drywell Sump Operation Month 20XX DR 3-106 EP-AA-1004 (Revision XX)

Dresden Annex Exelon Nuclear RECOGNITION CATEGORY COLD SHUTDOWN / REFUELING MALFUNCTIONS CU61-Initiating Condition:

UNPLANNED loss of RPV inventory for 15 minutes or longer.Operating Mode Applicability:

4,5 Emergency Acton Level (EAL): Note: 9 The Emerqency Director should declare the event promptly upon determining that the applicable time has been exceeded, or will likely be exceeded.Trkmf Cmmvrt~ F-linn,4r~ ,ehidA AI, 1 *hk H 1r C' n+I r" r ~i,^1 % i r I I EV m*k.,, 4 mn..* ksr kna A.,nnr r *fH! !lu6k! kn A A~ ~ ~ ~ t wwr ln wc v , Orl IyV V I7 VV llV V V V I!11Il VI =7w= ý .V 1. UNPLANNED loss of reactor coolant results in the inability to restore and maintain RPV water level above the procedurally established lower limit for >15 minutes.OR 2. a. RPV water level unknown AND b. Loss of RPV inventory per Table C3 indications.

Table C3 Indications of RCS Leakage* UNPLANNED floor or equipment sump level rise** UNPLANNED Torus level rise** UNPLANNED vessel make up rate rise" Observation of leakage or inventory loss*Rise in level is attributed to a loss in RPV inventory.I lr'l k &1ýIP I-. .__ ....I ---__ IL .... J _ " ...

... 1 I2 A -r %, ,;rr In.,,nr lran ; f r 1 iZ ,y% n fir Innrmn r 0 D n.~n+nr ~,nt.enl IDt' Q mi In I ~ ri nn* ha mrir~i*r.rnA AND k I IKIDI AKIKIM r ;r^ ;n .msr" ^ntr4/ar *-AnIAIael~

Month 20XX1row gl DR 3-107vm EP-AA-1004 (Revision XX)

Dregden Annex fresden Annex Exelon Nuclear RECOGNITION CATEGORY COLD SHUTDOWN / REFUELING MALFUNCTIONS Basis: UNPLANNED:

A parameter change or an event that is not 1) the result of an intended evolution or 2) an expected plant response to a transient.

The cause of the Parameter change or event may be known or unknown.This IC addresses the inability to restore and maintain water level to a required minimum level (or the lower limit of a level band), or a loss of the ability to monitor RPV IeveIRPV water level concurrent with indications of coolant leakage. Either of these conditions is considered to be a potential degradation of the level of safety of the plant.The procedurally established lower limit is not an operational band established above the procedural limit to allow for operator action prior to exceeding the procedural limit, but it is the procedurally established lower limit.Refueling evolutions that deGreaselower RCS water inventory are carefully planned and controlled.

An UNPLANNED event that results in water level decreasing below a procedurally required limit warrants the declaration of an Unusual Event due to the reduced water inventory that is available to keep the core covered.EAL #1 Basis iRecognizes that the minimum required RPV-leveIRPV water level can change several times during the course of a refueling outage as different plant configurations and system lineups are implemented.

This EAL is met if the minimum level, specified for the current plant conditions, cannot be maintained for 15 minutes or longer. The minimum level is typically specified in the applicable operating procedure but may be specified in another controlling document.The 15-minute threshold duration allows sufficient time for prompt operator actions to restore and maintain the expected water level. This criterion excludes transient conditions causing a brief lowering of water level.EAL #2 Basis aAddresses a condition where all means to determine RP-V-IeleIRPV water level have been lost. In this condition, operators may determine that an inventory loss is occurring by observing changes in sump and/or tank levels. Sump and/or tank level changes must be evaluated against other potential sources of water flow to ensure they are indicative of leakage from the RPV.Continued loss of RCS inventory may result in escalation to the Alert emergency classification level via either IC CA6 or CA53.Month 20XX DR 3-108 EP-AA-1004 (Revision XX)I Dresden Annex Exelon Nuclear RECOGNITION CATEGORY COLD SHUTDOWN / REFUELING MALFUNCTIONS Basis Reference(s):

1. NEI 99-01, Rev. 6 CUl 2. USAR 5.2.5, Detection of Leakage through Reactor Coolant Pressure Boundary 3. Technical Specifications 3.4.4 4. Technical Specifications 3.4.5 5. Unit 2(3) Appendix A Unit NSO Daily Surveillance Log 6. DAN 902(3)-4 A-17 DiyweUDrywell Equip Sump Lvi HI-HI 7. DAN 902(3)-4 H-18 Dlywel4Drywell Floor Drn Sump Lvl HI-HI 8. DOA 0040-01 Slow Leak 9. DOP 2000-24 .

Sump Operation 10. DGP 02-02 Reactor Vessel Slow Fill 11. DEOP 0010-00 Guidelines for Use or Dresden Emergency Operating Procedures and Severe Accident Management Guidelines

12. DEOP 0100-00 RPV Control, Table A 13. DIP 0260-01 Refuel Outage Reactor Vessel and Cavity Level Instrumentation

14. Technical Specifications Table 3.3.5.1 1 Month 20XX DR 3-109 EP-AA-1004 (Revision XX)

Dresden Annex Exelon Nuclear RECOGNITION CATEGORY HAZARDS AND OTHER CONDITIONS AFFECTING PLANT SAFETY HG1 Initiating Condition:

HOSTILE ACTION resulting in loss of physical control of the facility.Operating Mode Applicability:

1,2,3,4,5, D Emergency Acton Level (EAL): 1. A notification from the Security Force that a HOSTILE ACTION is occurring or has occurred within the PROTECTED AREA.AND 2. a. ANY Table H1 safety function cannot be controlled or maintained.

OR b. Damage to spent fuel has occurred or is IMMINENT Table H1 Safety Functions* Reactivity Control (ability to shut down the reactor and keep it shutdown)* RPV Water Level (ability to cool the core)* RCS Heat Removal (ability to maintain heat sink)A Unf 1CTII r ArTTIrnIM

o r,, e ,mrnrr, err kn r~,^i irrrer4 t&,ifhki r kr DDn, TIT[=I-AREA as e,,povd by the (,it. \ p.,ifi hift ,up""' ii")...ANID k C11ruc f +k f i! i k^A-%7 v %. .....rig..L I ,o r..... .I. L .... Jl.==ll--.J

--=4. ANi of the roitowing safety; WRUnionc cannot Be GGnroIF o naRtaRed-7* Reactivity controel 0 enar ennlinnWW UTRPV PP' ef level~ 03"1 WU P 9 RCS heat removal-. -, OR , -*- IL AllI, ll"J r~96.amage te speRt fuel riaS 9cUrUUFFd OF IS 1MM1ivir=r1I.

Month 20XX DR 3-110 EP-AA-1004 (Revision XX)

Oresden AnnexN.r-lAar Dresden Annex Exelon Nuclear RECOGNITION CATEGORY HAZARDS AND OTHER CONDITIONS AFFECTING PLANT SAFETY Basis: HOSTILE ACTION: An act toward a NPP or its personnel that includes the use of violent force to destroy eguipment, take HOSTAGES, and/or intimidate the licensee to achieve an end. This includes attack by air, land, or water using guns, explosives, PROJECTILEs, vehicles, or other devices used to deliver destructive force. Other acts that satisfy the overall intent may be included.

HOSTILE ACTION should not be construed to include acts of civil disobedience or felonious acts that are not part of a concerted attack on the NPP. Non-terrorism-based EALs should be used to address such activities (i.e., this may include violent acts between individuals in the owner controlled area).HOSTAGE: A person(s) held as leverage against the station to ensure that demands will be met by the station.PROJECTILE:

An obiect directed toward a NPP that could cause concern for its continued operability, reliability, or personnel safety.PROTECTED AREA: An area that normally encompasses all controlled areas within the security protected area fence.IMMINENT:

The traiectory of events or conditions is such that an EAL will be met within a relatively short period of time regardless of mitigation or corrective actions.HOSTILE FORCE: Any individuals who are engaaed in a determined assault, overtly or by stealth and deception, equipped with suitable weapons capable of killing, maiming, or causing destruction.

This IC addresses an event in which a HOSTILE FORCE has taken physical control of the facility to the extent that the plant staff can no longer operate equipment necessary to maintain key safety functions.

It also addresses a HOSTILE ACTION leading to a loss of physical control that results in actual or IMMINENT damage to spent fuel due to 1) damage to a spent fuel pool cooling system (e.g., pumps, heat exchangers, controls, etc.) or, 2) loss of spent fuel pool integrity such that sufficient water level cannot be maintained.

Timely and accurate communications between Security Shift Supervision and the Control Room is essential for proper classification of a security-related event.Security plans and terminology are based on the guidance provided by NEI 03-12, Template for the Security Plan, Training and Qualification Plan, Safeguards Contingency Plan [and Independent Spent Fuel Storage Installation Security Program].EFm=eFrgny plans and implementing pro edures are public documents; EALs s~hould no incorporat SecuiySenitiVe nomain This includos information that may be advantageu toaptntial adversary, such as the particulars concerning a-mu~~~~~~~~~~~

.~i .i .1: .~i .i .iu~ ..t i .i .t .r : .: .Iu .I .~u ..~ .~ ..1-Month 20XX DR 3-111 EP-AA-1004 (Revision XX)

Dresden Annex Exelon Nuclear RECOGNITION CATEGORY HAZARDS AND OTHER CONDITIONS AFFECTING PLANT SAFETY contained on non public documen8t6 such as the Security Plan.Basis Reference(s):

1. NEI 99-01, Rev. 6 HG1 5. Station Security Plan -Appendix C Month 20XX DR 3-112 EP-AA-1004 (Revision XX)

Dresden Annex Exelon Nuclear RECOGNITION CATEGORY HAZARDS AND OTHER CONDITIONS AFFECTING PLANT SAFETY HS1 Initiating Condition:

HOSTILE ACTION within the PROTECTED AREA.Operating Mode Applicability:

1,2,3,4,5, D Emergency Acton Level (EAL): A notification from the Security Force that a HOSTILE ACTION is occurring or has occurred within the PROTECTED AREA.1. A HOSTILE ACTION ic occurring Or hac occrroF~d within tho PRO--GTECTED APREA acroportod by the (site-spccifiG cocrit hiftspcr:wisn).

Basis: HOSTILE ACTION: An act toward a NPP or its personnel that includes the use of violent force to destroy equipment, take HOSTAGES, and/or intimidate the licensee to achieve an end. This includes attack by air, land, or water using guns, explosives, PROJECTILEs, vehicles, or other devices used to deliver destructive force. Other acts that satisfy the overall intent may be included.

HOSTILE ACTION should not be construed to include acts of civil disobedience or felonious acts that are not part of a concerted attack on the NPP. Non-terrorism-based EALs should be used to address such activities (i.e., this may include violent acts between individuals in the owner controlled area).HOSTAGE: A person(s) held as leverage against the station to ensure that demands will be met by the station.PROJECTILE:

An obiect directed toward a NPP that could cause concern for its continued operability, reliability, or personnel safety.PROTECTED AREA: An area that normally encompasses all controlled areas within the security protected area fence.HOSTILE FORCE: Any individuals who are engaged in a determined assault, overtly or by stealth and deception, equipped with suitable weapons capable of killing, maiming, or causing destruction.

INDEPENDENT SPENT FUEL STORAGE INSTALLATION (ISFSI): A complex that is designed and constructed for the interim storage of spent nuclear fuel and other radioactive materials associated with spent fuel storage.This IC addresses the occurrence of a HOSTILE ACTION within the PROTECTED AREA. This event will require rapid response and assistance due to the possibility for damage to plant equipment.

Timely and accurate communications between Security Shift Supervision and the Control Room is essential for proper classification of a security-related event.Month 20XX DR 3-113 EP-AA-1004 (Revision XX)

Dresden Annex Exelon Nuclear RECOGNITION CATEGORY HAZARDS AND OTHER CONDITIONS AFFECTING PLANT SAFETY Security plans and terminology are based on the guidance provided by NEI 03-12, Template for the Security Plan, Training and Qualification Plan, Safeguards Contingency Plan [and Independent Spent Fuel Storage Installation Security Program].As time and conditions allow, these events require a heightened state of readiness by the plant staff and implementation of onsite protective measures (e.g., evacuation, dispersal or sheltering).

The Site Area Emergency declaration will mobilize ORO resources and have them available to develop and implement public protective actions in the unlikely event that the attack is successful in impairing multiple safety functions.

This IC does not apply to a HOSTILE ACTION directed at an ISFSI PROTECTED AREA located outside the plant PROTECTED AREA; such an attack should be assessed using IC HA1. It also does not apply to incidents that are accidental events, acts of civil disobedience, or otherwise are not a HOSTILE ACTION perpetrated by a HOSTILE FORCE. Examples include the crash of a small aircraft, shots from hunters, physical disputes between employees, etc. Reporting of these types of events is adequately addressed by other EALs, or the requirements of 10 CFR § 73.71 or 10 CFR§ 50.72.Emorgoncy plans and implmerneting prOcodures arc public documents; theroforo, E=ALs-should not incorporae Security sencitivo nomain This inldsifrainthat

_ay be advantageour, to a potenial adversaFy, such as the paticularS concerning a specific throat Or throat location.

Security-sensitive information should be contained in Escalation of the emergency classification level would be via IC HG1.Basis Reference(s):

1. NEI 99-01 Rev 6, HS1 3. Station Security Plan -Appendix C Month 20XX DR 3-114 EP-AA-1004 (Revision XX) fl ma t4n Anniav=:vimlnn Kii,^lg--r RECOGNITION CATEGORY HAZARDS AND OTHER CONDITIONS AFFECTING PLANT SAFETY HA1 Initiating Condition:

HOSTILE ACTION within the OWNER CONTROLLED AREA or airborne attack threat within 30 minutes.Operating Mode Applicability:

1, 2,3,4,5, D Emergency Acton Level (EAL): 1. A validated notification from NRC of an aircraft attack threat < 30 minutes from the site.1. A HOST-ILE ACTION is cccufrring er has eccurred within the OWNER OR 2. Notification by the Security Force that a HOSTILE ACTION is occurring or has occurred within the OWNER CONTROLED AREA.A validatod rntificao-n ARfrom IRc , of an oircraft attack within 30 mnut of the ste Basis: HOSTILE ACTION: An act toward a NPP or its personnel that includes the use of violent force to destroy eguipment, take HOSTAGES, and/or intimidate the licensee to achieve an end. This includes attack by air, land, or water using guns, explosives, PROJECTILEs, vehicles, or other devices used to deliver destructive force. Other acts that satisfy the overall intent may be included.

HOSTILE ACTION should not be construed to include acts of civil disobedience or felonious acts that are not part of a concerted attack on the NPP. Non-terrorism-based EALs should be used to address such activities (i.e., this may include violent acts between individuals in the owner controlled area).HOSTAGE: A person(s) held as leverage against the station to ensure that demands will be met by the station.PROJECTILE:

An oboect directed toward a NPP that could cause concern for its continued operability, reliability, or personnel safety.OWNER CONTROLLED AREA (OCA): The property associated with the station and owned by the company. Access is normally limited to persons entering for official business.Month 20XX DR 3-115 EP-AA-1004 (Revision XX)

Dresden Annex Exelon Nuclear RECOGNITION CATEGORY HAZARDS AND OTHER CONDITIONS AFFECTING PLANT SAFETY PROTECTED AREA: An area that normally encompasses all controlled areas within the security protected area fence.HOSTILE FORCE: Any individuals who are engaged in a determined assault, overtly or by stealth and deception, equipped with suitable weapons capable of killing, maiming, or causing destruction.

This IC addresses the occurrence of a HOSTILE ACTION within the OWNER CONTROLLED AREA or notification of an aircraft attack threat. This event will require rapid response and assistance due to the possibility of the attack progressing to the PROTECTED AREA, or the need to prepare the plant and staff for a potential aircraft impact.Timely and accurate communications between Security Shift Supervision and the Control Room is essential for proper classification of a security-related event.Security plans and terminology are based on the guidance provided by NEI 03-12, Template for the Security Plan, Training and Qualification Plan, Safeguards Contingency Plan [and Independent Spent Fuel Storage Installation Security Program].As time and conditions allow, these events require a heightened state of readiness by the plant staff and implementation of onsite protective measures (e.g., evacuation, dispersal or sheltering).

The Alert declaration will also heighten the awareness of Offsite Response Organizations, allowing them to be better prepared should it be necessary to consider further actions.This IC does not apply to incidents that are accidental events, acts of civil disobedience, or otherwise are not a HOSTILE ACTION perpetrated by a HOSTILE FORCE.Examples include the crash of a small aircraft, shots from hunters, physical disputes between employees, etc. Reporting of these types of events is adequately addressed by other EALs, or the requirements of 10 CFR § 73.71 or 10 CFR § 50.72.EAL 2 #1 Basis Aaddresses the threat from the impact of an aircraft on the plant, and the anticipated arrival time is within 30 minutes. The intent of this EAL is to ensure that threat-related notifications are made in a timely manner so that plant personnel and OROs are in a heightened state of readiness.

This EAL is met when the threat-related information has been validated in accordance with DOA 0010-18, Escalated Security Event/Hostile Force Intrusio pr-edure)h.

EAL #2 Basis 4--4s applicable for any HOSTILE ACTION occurring, or that has occurred, in the OWNER CONTROLLED AREA. This includes any action directed against an ISFSI that is located outside the plant PROTECTED AREA.Month 20XX DR 3-116 EP-AA-1004 (Revision XX)

Dresden Annex Exelon Nuclear RECOGNITION CATEGORY HAZARDS AND OTHER CONDITIONS AFFECTING PLANT SAFETY EAL #2 addresses the threat 4rom the impact of an aircraft on the plant, and the anticipated arrival tome is within 30 mninutoc.

The intent of this EAL is to onsuro tha throat-rolatoed notfific-ations arc mnade in a timely manner SO that plant personnel andare in a heightened st.e, Of readiness.

This E..L is. Uet whe n the has heen validated in

%Ajfk,; fft- r^^,ft4,,inf II

• n mULISH n The NRC Headquarters Operations Officer (HOO) will communicate to the licensee if the threat involves an aircraft.

The status and size of the plane may be provided by NORAD through the NRC.In some cases, it may not be readily apparent if an aircraft impact within the OWNER CONTROLLED AREA was intentional (i.e., a HOSTILE ACTION). It is expected, although not certain, that notification by an appropriate Federal agency to the site would clarify this point. In this case, the appropriate federal agency is intended to be NORAD, FBI, FAA or NRC. The emergency declaration, including one based on other ICs/EALs, should not be unduly delayed while awaiting notification by a Federal agency.

plans and implementing proedures are pu .blic EAI.s should- not incorpoate Security scncitive information.

This includes information that ma" be advantageou toapoetial adversary, SUch as the particulars concrnig a sp9cific throat Or threat locatýion.

Security sensitiye information should be contained in non public documents such as the Security Plan.Escalation of the emergency classification level would be via IC HS1.Basis Reference(s):

1. NEI 99-01 Rev 6, HA1 2. Station Security Plan -Appendix C 3. DOA 0010-18, Escalated Security Event/Hostile Force Intrusion Month 20XX DR 3-117 EP-AA-1004 (Revision XX)

Dresden Annex Exelon Nuclear RECOGNITION CATEGORY HAZARDS AND OTHER CONDITIONS AFFECTING PLANT SAFETY HU1 Initiating Condition:

Confirmed SECURITY CONDITION or threat.Operating Mode Applicability:

1,2,3,4,5, D Emergency Acton Level (EAL):* Notification of a credible security threat directed at the site as determined per SY-AA-1 01-132, Security Assessment and Response to Unusual Activities.

p A SECURITY CONDITION that does not inv..olve a H.STILE ACTION as r-eported b the (site spenific security shift superCrisicn).

OR" A validated notification from the NRC providing information of an aircraft threat." Notification of a credible security threat directed at the site.OR" Notification by the Security Force of a SECURITY CONDITION that does not involve a HOSTILE ACTION.*A notific-ation fromn the NRG proViding infO.r.mAtion of an throat.Basis: SECURITY CONDITION:

Any Security Event as listed in the approved security contingency plan that constitutes a threat/compromise to site security, threat/risk to site personnel, or a potential degradation to the level of safely of the plant. A SECURITY CONDITION does not involve a HOSTILE ACTION SAFETY SYSTEM: A system required for safe plant operation, cooling down the plant and/or placing it in the cold shutdown condition, including the ECCS. These are typically systems classified as safety-related.

HOSTILE ACTION: An act toward a NPP or its personnel that includes the use of violent force to destroy equipment, take HOSTAGES, and/or intimidate the licensee to achieve an end. This includes attack by air, land, or water using guns, explosives, PROJECTILEs, vehicles, or other devices used to deliver destructive force. Other acts that satisfy the overall intent may be included.

HOSTILE ACTION should not be construed to include acts of civil disobedience or felonious acts that are not part of a concerted attack on the NPP. Non-terrorism-based EALs should be used to address such activities (i.e., this may include violent acts between individuals in the owner controlled area).HOSTAGE: A person(s) held as leverage against the station to ensure that demands will be met by the station.Month 20XX DR 3-118 EP-AA-1004 (Revision XX)

Dresden Annex Exelon Nuclear RECOGNITION CATEGORY HAZARDS AND OTHER CONDITIONS AFFECTING PLANT SAFETY PROJECTILE:

An obiect directed toward a NPP that could cause concern for its continued operability, reliability, or personnel safety.This IC addresses events that pose a threat to plant personnel or SAFETY SYSTEM equipment, and thus represent a potential degradation in the level of plant safety.Security events which do not meet one of these EALs are adequately addressed by the requirements of 10 CFR § 73.71 or 10 CFR § 50.72. Security events assessed as HOSTILE ACTIONS are classifiable under ICs HA1, HS1 and HG1.Timely and accurate communications between Security Shift Supervision and the Control Room is essential for proper classification of a security-related event.Classification of these events will initiate appropriate threat-related notifications to plant personnel and OROs.Security plans and terminology are based on the guidance provided by NEI 03-12, Template for the Security Plan, Training and Qualification Plan, Safeguards Contingency Plan [and Independent Spent Fuel Storage Installation Security Program].EAL #1 Basis Addresses the receipt of a credible security threat. The credibility of the threat is assessed in accordance with SY-AA-101-132. -rfor.n....

('ito ..p.eifi. c:u..ty chift ,up,.-,e;.)

bo.a-, o th.-o,- --r tho -I,-,-;_.

tr-in; d to -onfirm that a' ,-,u, it;, o'.' 4 i.urin EAL #2 Basis aAddresses the threat from the impact of an aircraft on the plant. The NRC Headquarters Operations Officer (HOO) will communicate to the licensee if the threat involves an aircraft.

The status and size of the plane may also be provided by NORAD throuah the NRC. Validation of the threat is Derformed in accordance with DOA 0010-_ ....... I ..... \ -- --its tzscaiaiea

,:ecuriiy -venuriosiiie r-orce inirusiontsi'e spgf--a dreses....... J 1110 ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~~i aOlTO ronnscsi'.

noT In rafhITJO fDira E PCesseg in---------.

-accodanc wit (cie e~eific roceedure).

EAL #3 Basis"i I "tl f ererences Securiwy -orcmf',ds MG :ssur t ey GR.- 6Upe"-f%"o -Decause tnese are the individuals trained to confirm that a securitv event is occurring or has occurred.Training on security event confirmation and classification is controlled due to the nature of Safeguards and 10 CFR § 2.39 information..

th thr"ot from tho impa.t of an irrarft on tho plant. Tho hNrC Hoadguartora Oporotinnc Officer (HOD) Il cemmunipto to tho 4ioncoo- if tho throat nolocanaircrft.

Th -ot -~tc and cizto of the rilao ma.' aco b Dre.'idd hi: hnORA. throahci thci NC. 11alidation of the thr-oati V.7 0 p. ..ermod in a.crdnc ...... \c procedure)

Month 20XX DR 3-119 EP-AA-1004 (Revision XX)

Dresden Annex Exelon Nuclear RECOGNITION CATEGORY HAZARDS AND OTHER CONDITIONS AFFECTING PLANT SAFETY Emergency plans and imlmnigprOceduroc arc pu blic documonts; therefore, EAI~s should not increporate Security-sensitk'c information.

T-hic inclu-doc-inforFmation that may be advantageous to a potential advcrsar,', such as the patiGiulaFGRG cocrin a.pecific threat or threat l.,atie,.

Security sensitive info. ..ation should bo containedin non public documentS such as the Security Plan.Escalation of the emergency classification level would be via IC HA1.Basis Reference(s):

1. NEI 99-01 Rev 6, HU1 2. SY-AA-1 01-132, Security Assessment and Response to Unusual Activities

3. Station Security Plan -Appendix C 4. NRC Safeguards Advisory 10/6/01 5. Letter from Mr. B. A. Boger (NRC) to Ms. Lynette Hendricks (NEI) dated 2/4/02 6. DOA 0010-18, Escalated Security Event/Hostile Force Intrusion Month 20XX DR 3-120 EP-AA-1 004 (Revision XX)

Dresden Annex Exalon Nuclear RECOGNITION CATEGORY HAZARDS AND OTHER CONDITIONS AFFECTING PLANT SAFETY HS26 Initiating Condition:

Inability to control a key safety function from outside the Control Room.Operating Mode Applicability:

1,2, 3, 4,5, D Emergency Acton Level (EAL): Note:* The Emergency Director should declare the event promptly upon determining that the applicable time has been exceeded, or will likely be exceeded.The E.mergency Diroctor Ashould docnlaare the Site Area EmFergencyoVent prom~ptly Upon detemining that (site-specific number of minutes) has boon oXcoodod, Or will likely be Xexededd.1. A Control Room eacuation has resulted in plant control being transferred from the Control Room to alternate locations per DSSP 0100-CR. Hot Shutdown Procedure-Control Room Evacuation.

AND 2. Control of ANY Table Hi key safety function is not reestablished in < 30 minutes.Table Hi Safety Functions" Reactivity Control (ability to shut down the reactor and keep it shutdown)" RPV Water Level (ability to cool the core)" RCS Heat Removal (ability to maintain heat sink)1. a. An ovcnt has resulted in plant control being transferred panels and local control stations).

fromn the Control Room to (site-specific remoete shutdown b. Control o-f ANY. of the floigkey safety functions is not Feestablishcd within (site-specific numbwer f minutess).

• ReactiVity contro a- Core cooling [PVVR] ý RPV water level [9144A o RCS heat removal Month 20XX DR 3-121 EP-AA-1004 (Revision XX) nrimarign Anngav Fva~lnn Na -harlr RECOGNITION CATEGORY HAZARDS AND OTHER CONDITIONS AFFECTING PLANT SAFETY Basis: The time period to establish control of the plant starts when either: a. Control of the plant is no longer maintained in the Main Control Room OR b. The last Operator has left the Main Control Room.This IC addresses an evacuation of the Control Room that results in transfer of plant control to alternate locations, and the control of a key safety function cannot be reestablished in a timely manner. The failure to gain control of a key safety function following a transfer of plan control to alternate locations is a precursor to a challenge to ono or morcany fission product barriers within a relatively short period of time.The determination of whether or not "control" is established at the remote safe shutdown location(s) is based on Emergency Director judgment.

The Emergency Director is expected to make a reasonable, informed judgment within timefG 30 minutes whether or not the operating staff has control of key safety functions from the remote safe shutdown location(s).

Escalation of the emergency classification level would be via IC FG1 or CG6-1-.Basis Reference(s):

1. NEI 99-01, Rev 6 HS6 2. DSSP 0100-CR Hot Shutdown Procedure

-Control Room Evacuation Month 20XX DR 3-122 EP-AA-1004 (Revision XX)

Dresden Annex Exelon Nuclear RECOGNITION CATEGORY HAZARDS AND OTHER CONDITIONS AFFECTING PLANT SAFETY HA26 Initiating Condition:

Control Room evacuation resulting in transfer of plant control to alternate locations.

Operating Mode Applicability:

1,2, 3, 4,5, D Emergency Acton Level (EAL): A Control Room evacuation has resulted in plant control being transferred from the Control Room to alternate locations per DSSP 0100-CR, Hot Shutdown Procedure

-Control Room Evacuation.

An event has resulted in plant contrl being transferred from the GContel Room to (site-specific r~emte shutdown panels and local conrol1 stations).

Basis: This IC addresses an evacuation of the Control Room that results in transfer of plant control to alternate locations outside the Control Room. The loss of the ability to control the plant from the Control Room is considered to be a potential substantial degradation in the level of plant safety.Following a Control Room evacuation, control of the plant will be transferred to alternate shutdown locations.

The necessity to control a plant shutdown from outside the Control Room, in addition to responding to the event that required the evacuation of the Control Room, will present challenges to plant operators and other on-shift personnel.

Activation of the ERO and emergency response facilities will assist in responding to these challenges.

Escalation of the emergency classification level would be via IC HS26.Basis Reference(s):

1. NEI 99-01, Rev 6 HA6 2. DSSP 0100-CR, Hot Shutdown Procedure

-Control Room Evacuation Month 20XX DR 3-123 EP-AA-1004 (Revision XX) nranlrin Annov P~v--Inn k, ,,-Iaor RECOGNITION CATEGORY HAZARDS AND OTHER CONDITIONS AFFECTING PLANT SAFETY HU34 Initiating Condition:

FIRE potentially degrading the level of safety of the plant.Operating Mode Applicability:

1,2,3,4,5, D Emergency Acton Level (EAL): Note:* The Emergency Director should declare the event Promptly upon determining that the applicable time has been exceeded, or will likely be exceeded.The Emnergency Director should decl-are the Unusual Event promnptly Upon that the applicable time has boon oXcoodd, OFr Wi11 likely be 8XGeeded.1. A FIRE in any Table H2 area is not extinguished in < 15-minutes of ANY of the following FIRE detection indications: " Report from the field (i.e., visual observation)" Receipt of multiple (more than 1) fire alarms or indications

• Field verification of a single fire alarm Table H2 Vital Areas" Reactor Building (when inerted the Drywell is exempt)* Aux Electric Room* Control Room* Unit and Shared Emergency Diesel Generator Rooms* 4KV ECCS Switchgear Area (includes Bus 23, 24, 33 and 34 only)* CRD & CCSW Pump Rooms* Turbine Building Cable Tunnel" Turbine Building Safe Shutdown Areas as follows:* B- Train Control Room HVAC Room* Battery Rooms and DC Distribution Areas 1) U2 Battery Room (includes DC switchgear, 125V, and 250V battery rooms)2) U3 Battery Room, Battery Cage area, and U3 Battery Charger Room (all on U3 TB 538)* Crib House-l OR Month 20XX DR 3-124 EP-AA-1004 (Revision XX)

AnnAxNuelAar fresd=n Anne Nuclear RECOGNITION CATEGORY HAZARDS AND OTHER CONDITIONS AFFECTING PLANT SAFETY 2. a. Receipt of a single fire alarm in any Table H2 area (i.e., no other indications of a FIRE).AND b. The existence of a FIRE is not verified in < 30 minutes of alarm receipt.OR 3 A FIRE within the plant PROTECTED AREA not extinguished in < 60-minutes of the initial report, alarm or indication.

OR 4 A FIRE within the plant PROTECTED AREA that reguires firefighting support by an offsite fire response agency to extinguish.

(1) a. A FIRE is NOT ,hinguishd within 15 _minutes of ANYI of tkhe following FIRE d-etecntion indications:;"Report fromR the field (i.e., visual observation)" Receipt of multiple (mor~e than 1) fire alarms OrFniain" Field Yerification of a single fire alarm AND b. The FIRE ie located within ANY of the follow8 ng plant roomAs or a~reas: (cite-specific list of plant rooms Or areas)(2) a. Recoipt of a single fire alarm (i.e., no other indic-ations of a FIRE)-.AND b. The FIRE is lcated within ANY of the follo g rlant room, or OrFas (site-specific list of plant rooms Or areas)AND G. The of a FIRE is not ,,;rifi;d within 30 minutcs of alarm (3) A FIRE withiOn the plant or- ISF1S [fr plants with an ISF-S! outside the pln Prqtected Area] PROTECTED AREA Rot extiRgu-shed within 60 mninutes ofth I I I r+rs~lI4 St 'ru " *g flA at l 11 1 --1 Month 20XX DR 3-125 EP-AA-1004 (Revision XX)

Dresden AnnexNuelAar fresden Annex Exelon Nucilear RECOGNITION CATEGORY HAZARDS AND OTHER CONDITIONS AFFECTING PLANT SAFETY (1) A FIRE within the plant or- ISFSI [for- plants with an ISFSI outside the plani P-ratected Afral PROTECTEFD AREA that roguirec firofighting cupport by an offeite fire resepnco agency to e~inguish Basis: FIRE: Combustion characterized by heat and light. Sources of smoke such as slippinq drive belts or overheated electrical equipment do not constitute FIRES. Observation of flame is preferred but is NOT required if large quantities of smoke and heat are observed.PROTECTED AREA: An area that normally encompasses all controlled areas within the security protected area fence.This IC addresses the magnitude and extent of FIRES that may be indicative of a potential degradation of the level of safety of the plant.EAL #1 Basis The intent of the 15-minute duration is to size the FIRE and to discriminate against small FIRES that are readily extinguished (e.g., smoldering waste paper basket). In addition to alarms, other indications of a FIRE could be a drop in fire main pressure, automatic activation of a suppression system, etc.Upon receipt, operators will take prompt actions to confirm the validity of an initial fire alarm, indication, or report. For EAL assessment purposes, the emergency declaration clock starts at the time that the initial alarm, indication, or report was received, and not the time that a subsequent verification action was performed.

Similarly, the fire duration clock also starts at the time of receipt of the initial alarms, indication or report.EAL #2 Basis This EAL addresses receipt of a single fire alarm, and the existence of a FIRE is not verified (i.e., proved or disproved) within 30-minutes of the alarm. Upon receipt, operators will take prompt actions to confirm the validity of a single fire alarm. For EAL assessment purposes, the 30-minute clock starts at the time that the initial alarm was received, and not the time that a subsequent verification action was performed.

A single fire alarm, absent other indication(s) of a FIRE, may be indicative of equipment failure or a spurious activation, and not an actual FIRE. For this reason, additional time is allowed to verify the validity of the alarm. The 30-minute period is a reasonable amount of time to determine if an actual FIRE exists; however, after that time, and absent information to the contrary, it is assumed that an actual FIRE is in progress.Month 20XX DR 3-126 EP-AA-1004 (Revision XX) nrgaadgn Anngav 5:i:%1r~n Nhir-lgar*

• S r5 SR S *5 S S *RECOGNITION CATEGORY HAZARDS AND OTHER CONDITIONS AFFECTING PLANT SAFETY If an actual FIRE is verified by a report from the field, then EAL #1 is immediately applicable, and the emergency must be declared if the FIRE is not extinguished within 15-minutes of the report. If the alarm is verified to be due to an equipment failure or a spurious activation, and this verification occurs within 30-minutes of the receipt of the alarm, then this EAL is not applicable and no emergency declaration is warranted.

EAL #3 Basis In addition to a FIRE addressed by EAL #1 or EAL #2, a FIRE within the plant PROTECTED AREA not extinguished within 60-minutes may also potentially degrade the level of plant safety. This bais extends to a FIRE '. cur ..thin ths PROTECTED AREA of an ISFSI, the pl,,t POTECTED ARE.A.[Sentonco for plant-s wita.h aQn ISFSIoutsi the plant Protected Area]EAL #4 Basis If a FIRE within the plant or ISFS1 [for-plants with an ISF,' "utskd; the plant Pro-tocd-AF-a]-PROTECTED AREA is of sufficient size to require a response by an offsite firefighting agency (e.g., a local town Fire Department), then the level of plant safety is potentially degraded.

The dispatch of an offsite firefighting agency to the site requires an emergency declaration only if it is needed to actively support firefighting efforts because the fire is beyond the capability of the Fire Brigade to extinguish.

Declaration is not necessary if the agency resources are placed on stand-by, or supporting post-extinguishment recovery or investigation actions.Basis-Related Requirements from Appendix R Appendix R to 10 CFR 50, states in part: Criterion 3 of Appendix A to this part specifies that "Structures, systems, and components important to safety shall be designed and located to minimize, consistent with other safety requirements, the probability and effect of fires and explosions." When considering the effects of fire, those systems associated with achieving and maintaining safe shutdown conditions assume major importance to safety because damage to them can lead to core damage resulting from loss of coolant through boil-off.Because fire may affect safe shutdown systems and because the loss of function of systems used to mitigate the consequences of design basis accidents under post-fire conditions does not per se impact public safety, the need to limit fire damage to systems required to achieve and maintain safe shutdown conditions is Month 20XX DR 3-127 EP-AA-1004 (Revision XX)

Dry.dAn Annex Dlresden Annex ExAeron Nuc~ler RECOGNITION CATEGORY HAZARDS AND OTHER CONDITIONS AFFECTING PLANT SAFETY greater than the need to limit fire damage to those systems required to mitigate the consequences of design basis accidents.

In addition, Appendix R to 10 CFR 50, requires, among other considerations, the use of 1-hour fire barriers for the enclosure of cable and equipment and associated non-safety circuits of one redundant train (G.2.c). As used in EAL #2, the 30-minutes to verify a single alarm is well within this worst-case 1-hour time period.Depending upon the plant mode at the time of the event, escalation of the emergency classification level would be via IC CA26 or MA5SA9.Basis Reference(s):

1. NEI 99-01, Rev 6 HU4 2. UFSAR 3.2, Classification of Structures, Components, and Systems 3. UFSAR 3.5.3 4. General Arrangement Drawings M-3, M-4, M-4A, M-5 and M-10 Month 20XX DR 3-128 EP-AA-1004 (Revision XX)

Dresden Annex Exelon Nuclear RECOGNITION CATEGORY HAZARDS AND OTHER CONDITIONS AFFECTING PLANT SAFETY HU42 Initiating Condition:

Seismic event greater than OBE levels.Operating Mode Applicability:

1,2,3,4,5, D Emergency Acton Level (EAL): 1. Control Room personnel feel an actual or potential seismic event.AND 2. The occurrence of a seismic event is confirmed in a manner deemed appropriate by the Shift Manager or Emergency Director.SeismniG event greater than Operating B3asis Earthquake (01BE) as, indicated by:.a. (cito spocific IndIIation that a seismic i5Int met Or exceeded OBE limits)Basis: This IC addresses a seismic event that results in accelerations at the plant site greater than those specified for an Operating Basis Earthquake (OBE)1.An earthquake greater than an OBE but less than a Safe Shutdown Earthquake (SSE)2 should have no significant impact on safety-related systems, structures and components; however, some time may be required for the plant staff to ascertain the actual post-event condition of the plant (e.g., performs walk-downs and post-event inspections).

Given the time necessary to perform walk-downs and inspections, and fully understand any impacts, this event represents a potential degradation of the level of safety of the plant.Event verification with external sources should not be necessary during or following an OBE. Earthquakes of this magnitude should be readily felt by on-site personnel and recognized as a seismic event (e.g., typical lateral accelerations are in excess of 0.08g).Tho Shift Manager Or Emergency Director Ma" sook e~dernal Yorific-ation if doomo~d appropiate (e.g., a call to tho USGS, chock internet news sourcGes, etc.); however, the vorifiatination must not preclude a timecly emergency declaration.

EAL #2 is included to ensure that a declaration does not result from felt vibrations caused by a non-seismic source (e.g.. a dropped load). The Shift Manager or Emergency Director may seek external verification if deemed appropriate (e.g.. call to USGS, check internet source. etc.) however, the verification action must not preclude a timely emergency declaration.

This EAL wording recognizes that it may cause the site to 1 An OBE is vibratory ground motion for which those features of a nuclear power plant necessary for continued operation without undue risk to the health and safety of the public will remain functional.

An SSE is vibratory ground motion for which certain (generally, safety-related) structures, systems, and components must be designed to remain functional.

Mot 2OXX DR -12lEPAA-00 (Revison XX Month 20XX DR 3-129 EP-AA-1004 (Revision XX)

Exelan Nuclear Dresden Annex Eeo ula RECOGNITION CATEGORY HAZARDS AND OTHER CONDITIONS AFFECTING PLANT SAFETY declare an Unusual Event while another site similarly affected but with readily available OBE indications in the Control Room, may not.Depending upon the plant mode at the time of the event, escalation of the emergency classification level would be via IC CA26 or MA5SAG.Basis Reference(s):

1. NEI 99-01, Rev 6 HU2 2. DOA 0010-03 Earthquakes Month 20XX DR 3-130 EP-AA-1 004 (Revision XX)

Dresden Annex Exelon Nuclear RECOGNITION CATEGORY HAZARDS AND OTHER CONDITIONS AFFECTING PLANT SAFETY HA5 Initiating Condition:

Gaseous release impeding access to equipment necessary for normal plant operations, cooldown or shutdown.Operating Mode Applicability:

1,2,3, 4,5, D Emergency Acton Level (EAL): Note:* If the equipment in the listed room or area was already inoperable, or out of service, before the event occurred, then no emeraencv classification is warranted.

1. Release of a toxic, corrosive, asphyxiant or flammable qas in a Table H3 area.Table H3 Areas with Entry Related Mode ADplicability Area Entry Related Mode Applicability Reactor Building*

Modes 3, 4, and 5*Areas required to establish shutdown cooling AND 2. Entry into the room or area is prohibited or impeded Note: if the equipment in the listed roomA or arca was already inepcrable Or Out-of cor.ice beforo the event occUrrod, then no- eomogency classification

~waRranted 7-(1) a. Reloase of a toxic, corrose, asphyxiant o.r flam.mabl.

gar, int any of the following plant roms oraeaqs:.(site-specific list of plant rooms Or areas with entry related moede app-licaiinidniid

--AND I P I I I IIl l19. t--ntr; into tne room or area is pronilimee or impeaa Month 20XX DR 3-131 EP-AA-1004 (Revision XX)

Dresden Annex Exelon Nuclear RECOGNITION CATEGORY HAZARDS AND OTHER CONDITIONS AFFECTING PLANT SAFETY Basis: This IC addresses an event involving a release of a hazardous gas that precludes or impedes access to equipment necessary to transition the plant from normal plant operation to cooldown and shutdown as specified in normal plant proceduresmaintain no"mal plant .p.atin o .r....rod f!O a normal plant co,1,dwn and shutdown.

This condition represents an actual or potential substantial degradation of the level of safety of the plant.Table H3 is a list of plant rooms or areas with entry-related mode applicability that contain equipment which require a manual/local action necessary to transition the plant from normal plant operation to cooldown and shutdown as specified in normal operating procedures (establish shutdown cooling), where if this action is not completed the plant would not be able to attain and maintain cold shutdown.This Table does not include rooms or areas for which entry is required solely to perform actions of an administrative or record keeping nature (e.g., normal rounds or routine inspections).

This Table does not include the Control Room since adequate enqineered safety/design features are in place to preclude a Control Room evacuation due to the release of a hazardous gas.An Alert declaration is warranted if entry into the affected room/area is, or may be, procedurally required during the plant operating mode in effect and the gaseous release preclude the ability to place shutdown cooling in ser*iceat the time of the ga..ou release. The emergency classification is not contingent upon whether entry is actually necessary at the time of the release.Evaluation of the IC and EAL do not require atmospheric sampling; it only requires the Emergency Director's judgment that the gas concentration in the affected room/area is sufficient to preclude or significantly impede procedurally required access. This judgment may be based on a variety of factors including an existing job hazard analysis, report of ill effects on personnel, advice from a subject matter expert or operating experience with the same or similar hazards. Access should be considered as impeded if extraordinary measures are necessary to facilitate entry of personnel into the affected room/area (e.g., requiring use of protective equipment, such as SCBAs, that is not routinely employed).

An emergency declaration is not warranted if any of the following conditions apply.* The plant is in an operating mode different than the mode specified for the affected room/area (i.e., entry is not required during the operating mode in effect at the time of the gaseous release).

For example, the plant is in Mode 1 when the gaseous release occurs, and the procedures used for normal operation, cooldown and shutdown do not require entry into the affected room until Mode 4.Month 20XX DR 3-132 EP-AA-1004 (Revision XX) nrmQarn Anniav Fvalnn hhu-Imar RECOGNITION CATEGORY HAZARDS AND OTHER CONDITIONS AFFECTING PLANT SAFETY" The gas release is a planned activity that includes compensatory measures which address the temporary inaccessibility of a room or area (e.g., fire suppression system testing)." The action for which room/area entry is required is of an administrative or record keeping nature (e.g., normal rounds or routine inspections)." The access control measures are of a conservative or precautionary nature, and would not actually prevent or impede a required action.An asphyxiant is a gas capable of reducing the level of oxygen in the body to dangerous levels. Most commonly, asphyxiants work by merely displacing air in an enclosed environment.

This reduces the concentration of oxygen below the normal level of around 19%, which can lead to breathing difficulties, unconsciousness or even death.This EAL does not apply to firefighting activities that generate smoke, that automatically or manually activate a fire suppression system in an area, or to intentional inerting of containment.

I Escalation of the emergency classification level would be via Recognition Category RA, C or F ICs.Basis Reference(s):

1. NEI 99-01, Rev 6 HA5 2. UFSAR 3.5.3 3. UFSAR 3.2 4. General Arrangement Drawings M-3, M-4, M-4A, M-5 and M-10 Month 20XX DR 3-133 EP-AA-1004 (Revision XX)

Dresden Annex Exelon Nuclear RECOGNITION CATEGORY HAZARDS AND OTHER CONDITIONS AFFECTING PLANT SAFETY HU63 Initiating Condition:

Hazardous Event Operating Mode Applicability:

1,2,3,4,5, D Emergency Acton Level (EAL): Note:* EAL #4 does not apply to routine traffic impediments such as fog, snow, ice, or vehicle breakdowns or accidents.

1. Tornado strike within the PROTECTED AREA.OR 2. Internal room or area flooding of a magnitude sufficient to require manual or automatic electrical isolation of a SAFETY SYSTEM component reguired by Technical Specifications for the current operating mode.OR 3. Movement of Dersonnel within the PROTECTED AREA is impeded due to an offsite event involving hazardous materials (e.,q., an offsite chemical spill or toxic gas release).OR 4. A hazardous event that results in on-site conditions sufficient to prohibit the plant staff from accessing the site via personal vehicles.OR 5. Abnormal River level, as indicated by EITHER: a. High river level > 509 ft.OR b. Low river level < 501 ft. 6 inches.aa PAL A2 daz nnt~ a *I~ tn~ muin traff~i. k, wh a'o' lrnr' an t r1r, y-----------------------------------

V -V"H4UM A &tr~tWVJ...

W i ...~&L:... 4L.-0) 10FRu.GuO W~ine~ WKHLIRl Iul r-ri'.jvr -i-., ArI ;..(~ Intr~rn~d room or ~ro~i floodino of ~ mnnitjdo riiffiriont to rrwniirn m~niioI or'-I Ml iniarnal rnnFn nF anna finnd4nn of amagnitude r,- dffr-iAnt ta nual e curnt nt operating mXde.Month 2OXX DR 3-134 EP-AA-1004 (Revision XX)

Dresden Annex Exelon Nuclear RECOGNITION CATEGORY HAZARDS AND OTHER CONDITIONS AFFECTING PLANT SAFETY (3) Moveoment of porconnol within the PROTECTED AREA is impeded duo to an ( f4) t. eye naadous .. atorials (e.g., an offito cGhemial spill Or toxi. -(1) A hazardous eVont that reSUltS in on site conditions sufficisent to prohibit the plant I ~SUR tFGFn aGGeS61AQ IR9 Site Via PeFSGAal VeHIGIes.II-~.. -/f-\An ane69o M louiii at. u n-atur-a or ionnio -ai z-Aru uvuniwT\ ..... r Basis: PROTECTED AREA: An area that normally encompasses all controlled areas within the security Drotected area fence.SAFETY SYSTEM: A system required for safe plant operation, cooling down the plant and/or placing it in the cold shutdown condition, including the ECCS. These are typically systems classified as safety-related.

This IC addresses hazardous events that are considered to represent a potential degradation of the level of safety of the plant.EAL #1 Basis aAddresses a tornado striking (touching down) within the Protected Area.EAL #2 Basis aAddresses flooding of a building room or area that results in operators isolating power to a SAFETY SYSTEM component due to water level or other wetting concerns.Classification is also required if the water level or related wetting causes an automatic isolation of a SAFETY SYSTEM component from its power source (e.g., a breaker or relay trip). To warrant classification, operability of the affected component must be required by Technical Specifications for the current operating mode. Manual isolation of power to a SAFETY SYSTEM component as a result of leakage is an event of lesser impact and would be expected to cause small and localized damage. The consequence of this type of event is adequately assessed and addressed in accordance with Technical Specifications.

EAL #3 Basis aAddresses a hazardous materials event originating at an offsite location and of sufficient magnitude to impede the movement of personnel within the PROTECTED AREA.EAL #4 Basis aAddresses a hazardous event that causes an on-site impediment to vehicle movement and significant enough to prohibit the plant staff from accessing the site using personal Month 20XX DR 3-135 EP-AA-1004 (Revision XX)

Dresden Annex Exelon Nuclear RECOGNITION CATEGORY HAZARDS AND OTHER CONDITIONS AFFECTING PLANT SAFETY vehicles.

Examples of such an event include site flooding caused by a hurricane, heavy rains, up-river water releases, dam failure, etc., or an on-site train derailment blocking the access road.This EAL is not intended apply to routine impediments such as fog, snow, ice, or vehicle breakdowns or accidents, but rather to more significant conditions such as the Hurricane Andrew strike on Turkey Point in 1992, the flooding around the Cooper Station during the Midwest floods of 1993, or the flooding around Ft. Calhoun Station in 2011.EAL #5 Basis: The possible maximum flood (PMF) produces a peak flood to 528 ft el. This is significantly above the grade elevation (517 ft) and the high river water level threshold, which is the lowest opening leading to safety-related eguipment (509 ft el.). When this level is reached, the reactors are shutdown, the drywells are deinerted, and the vessels are flooded and cooled to cold shutdown conditions as guickly as possible.

If the water level reaches 513 ft el., reactor cooldown is transferred to the Isolation Condensers, which thereafter maintain a safe shutdown condition until the flood waters recede and plant startup can be initiated.

Minimum river water levels to assure pump suction are: " Circulating Water Pumps: 490 ft el." Service Water Pumps: 494 ft el.* CCSW Pumps: 501 ft 6 in." Unit 2/3 Fire Pump: 498 ft 6 in.The low river water level threshold (501 ft. 6 in.) is based on the most limiting pump suction requirement (CCSW).EAL #6 addrccccc (site cpeoific deoVipt Escalation of the emergency classification level would be based on lCs in Recognition Categories RA, F, MS, H or C.Basis Reference(s):

1. NEI 99-01, Rev 6 HU3 2. DOA 0010-01 Dresden Lock and Dam Failure 3. DOA 0010-04 Floods 4. DOA 0010-02 Tornado Warning/Severe Winds 5. DOA-0010-12, Toxic Gas/Chemical Release from Nearby Chemical Facilities Month 20XX DR 3-136 EP-AA-1004 (Revision XX)

Dresden Annex Exelon Nuclear Dresden Annex Exelon Nuclear RECOGNITION CATEGORY HAZARDS AND OTHER CONDITIONS AFFECTING PLANT SAFETY HG7 Initiating Condition:

Other conditions exist which in the judgment of the Emergency Director warrant declaration of a GENERAL EMERGENCY.

Operating Mode Applicability:

1,2,3,4,5, D Emergency Acton Level (EAL): 4( Other conditions exist which in the judgment of the Emergency Director indicate that events are in progress or have occurred which involve actual or IMMINENT substantial core degradation or melting with potential for loss of containment integrity or HOSTILE ACTION that results in an actual loss of physical control of the facility.Releases can be reasonably expected to exceed EPA Protective Action Guideline exposure levels offsite for more than the immediate site area.Basis: IMMINENT:

The traiectory of events or conditions is such that an EAL will be met within a relatively short period of time regardless of mitigation or corrective actions.HOSTILE ACTION: An act toward a NPP or its personnel that includes the use of violent force to destroy eguirpment, take HOSTAGES, and/or intimidate the licensee to achieve an end. This includes attack by air, land, or water using guns, explosives, PROJECTILEs, vehicles, or other devices used to deliver destructive force. Other acts that satisfy the overall intent may be included.

HOSTILE ACTION should not be construed to include acts of civil disobedience or felonious acts that are not part of a concerted attack on the NPP. Non-terrorism-based EALs should be used to address such activities (i.e., this may include violent acts between individuals in the owner controlled area).HOSTAGE: A person(s) held as leverage against the station to ensure that demands will be met by the station PROJECTILE:

An obiect directed toward a NPP that could cause concern for its continued operability, reliability, or personnel safety.This IC addresses unanticipated conditions not addressed explicitly elsewhere but that warrant declaration of an emergency because conditions exist which are believed by the Emergency Director to fall under the emergency classification level description for a General Emergency.

Basis Reference(s):

1. NEI 99-01, Rev 6 HG7 Month 20XX DR 3-137 EP-AA-1004 (Revision XX)

I=yAInn flmttrien Annpx Exeinn NucleIar RECOGNITION CATEGORY HAZARDS AND OTHER CONDITIONS AFFECTING PLANT SAFETY HS7 Initiating Condition:

Other conditions exist which in the judgment of the Emergency Director warrant declaration of a SITE AREA EMERGENCY.

Operating Mode Applicability:

1,2,3,4,5, D Emergency Acton Level (EAL): (-14 Other conditions exist which in the judgment of the Emergency Director indicate that events are in progress or have occurred which involve actual or likely major failures of plant functions needed for protection of the public or HOSTILE ACTION that results in intentional damage or malicious acts, (1) toward site personnel or equipment that could lead to the likely failure of or, (2) that prevent effective access to equipment needed for the protection of the public. Any releases are not expected to result in exposure levels which exceed EPA Protective Action Guideline exposure levels beyond the site boundary.Basis: HOSTILE ACTION: An act toward a NPP or its personnel that includes the use of violent force to destroy eguipment, take HOSTAGES, and/or intimidate the licensee to achieve an end. This includes attack by air, land, or water using guns, explosives, PROJECTILEs, vehicles, or other devices used to deliver destructive force. Other acts that satisfy the overall intent may be included.

HOSTILE ACTION should not be construed to include acts of civil disobedience or felonious acts that are not part of a concerted attack on the NPP. Non-terrorism-based EALs should be used to address such activities (i.e., this may include violent acts between individuals in the owner controlled area).HOSTAGE: A person(s) held as leverage against the station to ensure that demands will be met by the station PROJECTILE:

An obiect directed toward a NPP that could cause concern for its continued operability, reliability, or personnel safety.This IC addresses unanticipated conditions not addressed explicitly elsewhere but that warrant declaration of an emergency because conditions exist which are believed by the Emergency Director to fall under the emergency classification level description for a Site Area Emergency.

Basis Reference(s):

1. NEI 99-01, Rev 6 HS7 Month 20XX DR 3-138 EP-AA-1004 (Revision XX)

Dresden Annex Exelon Nuclear Dresden Annex Exelon Nuclear RECOGNITION CATEGORY HAZARDS AND OTHER CONDITIONS AFFECTING PLANT SAFETY HA7 Initiating Condition:

Other conditions exist which in the judgment of the Emergency Director warrant declaration of an ALERT Operating Mode Applicability:

1,2,3, 4,5, D Emergency Acton Level (EAL): (-1-) Other conditions exist which, in the judgment of the Emergency Director, indicate that events are in progress or have occurred which involve an actual or potential substantial degradation of the level of safety of the plant or a security event that involves probable life threatening risk to site personnel or damage to site equipment because of HOSTILE ACTION. Any releases are expected to be limited to small fractions of the EPA Protective Action Guideline exposure levels.Basis: HOSTILE ACTION: An act toward a NPP or its personnel that includes the use of violent force to destroy equipment, take HOSTAGES, and/or intimidate the licensee to achieve an end. This includes attack by air, land, or water using guns, explosives, PROJECTILEs, vehicles, or other devices used to deliver destructive force. Other acts that satisfy the overall intent may be included.

HOSTILE ACTION should not be construed to include acts of civil disobedience or felonious acts that are not part of a concerted attack on the NPP. Non-terrorism-based EALs should be used to address such activities (i.e., this may include violent acts between individuals in the owner controlled area).HOSTAGE: A person(s) held as leverage against the station to ensure that demands will be met by the station PROJECTILE:

An obiect directed toward a NPP that could cause concern for its continued operability, reliability, or personnel safety.This IC addresses unanticipated conditions not addressed explicitly elsewhere but that warrant declaration of an emergency because conditions exist which are believed by the Emergency Director to fall under the emergency classification level description for an Alert.Basis Reference(s):

1. NEI 99-01, Rev 6 HA7 Month 20XX DR 3-139 EP-AA-1004 (Revision XX)

Dresden Annex Exelon Nuclear RECOGNITION CATEGORY HAZARDS AND OTHER CONDITIONS AFFECTING PLANT SAFETY HU7 Initiating Condition:

Other conditions exist which in the judgment of the Emergency Director warrant declaration of an EVENT.Operating Mode Applicability:

1,2,3,4,5, D Emergency Acton Level (EAL): (-1) Other conditions exist which in the judgment of the Emergency Director indicate that events are in progress or have occurred which indicate a potential degradation of the level of safety of the plant or indicate a security threat to facility protection has been initiated.

No releases of radioactive material requiring offsite response or monitoring are expected unless further degradation of safety systems occurs.Basis: This IC addresses unanticipated conditions not addressed explicitly elsewhere but that warrant declaration of an emergency because conditions exist which are believed by the Emergency Director to fall under the emergency classification level description for an NOUEUNUSUAL EVENT.Basis Reference(s):

1. NEI 99-01, Rev 6 HU7 Month 20XX DR 3-140 EP-AA-1004 (Revision XX)

Dr@sden Annex Dlresden Annex ExeIon Nucilear RECOGNITION CATEGORY ISFSI MALFUNCTIONS E-HU1 Initiating Condition Damage to a loaded cask CONFINEMENT BOUNDARY.Operating Mode Applicability:

1,2,3,4,5, D Emergency Acton Level (EAL): Damage to a loaded cask CONFINEMENT BOUNDARY as indicated by an on-contact radiation reading: 1. EAST HI-STAR: 9 > 160 mrem/hr (neutron + gamma) on the top of the Overmack OR 0 > 250 mrem/hr (neutron+

gamma) on the side of the Overpack OR 2. EAST HI-STORM:* > 20 mrem/hr (neutron+

gamma) on the top of the Overpack OR* >100 mrem/hr (neutron+

gamma) on the side of the Overpack OR* > 45 mrem/hr (neutron+

gamma) at the inlet and outlet vent ducts of the Overpack OR 3. WEST HI-STORM:* > 40 mrem/hr (neutron+

gamma) on the top of the Overpack OR* >100 mrem/hr (neutron+

gamma) on the side of the Overpack, excluding inlet and outlet ducts-(1)----Damage to a loaded cask CONFINEMV=ENT BOUNDARY as indiatcd by an ont radiatioGnA ading greatc, than (2 ti;mes the site specific cask specific specification allowable radiation level) on the su~faco of tho spent fuel cask.Basis: CONFINEMENT BOUNDARY:

The irradiated fuel dry storage cask barrier(s) between areas containing radioactive substances and the environment.

Month 20XX DR 3-141 EP-AA-1004 (Revision XX)

Dresden Annex Exelon Nuclear RECOGNITION CATEGORY ISFSI MALFUNCTIONS INDEPENDENT SPENT FUEL STORAGE INSTALLATION (ISFSI)* A complex that is designed and constructed for the interim storage of spent nuclear fuel and other radioactive materials associated with spent fuel storage.This IC addresses an event that results in damage to the CONFINEMENT BOUNDARY of a storage cask containing spent fuel. -It applies to irradiated fuel that is licensed for dry storage beginning at the point that the loaded storage cask is sealed. The word cask, as used in this EAL, refers to the storage container in use at the site for dry storage of irradiated fuel. The issues of concern are the creation of a potential or actual release path to the environment, degradation of one Or moreany fuel assemblies due to environmental factors, and configuration changes which could cause challenges in removing the cask or fuel from storage.The existence of "damage" is determined by radiological survey. The technical specification multiple of "2 times", which is also used in Recognition Category RA IC RAU1, is used here to distinguish between non-emergency and emergency conditions.

The emphasis for this classification is the degradation in the level of safety of the spent fuel cask and not the magnitude of the associated dose or dose rate. It is recognized that in the case of extreme damage to a loaded cask, the fact that the "on-contact" dose rate limit is exceeded may be determined based on measurement of a dose rate at some distance from the cask.Security-related events for ISFSIs are covered under ICs HU1 and HAl.Basis Reference(s):

1. NEI 99-01, Rev 6 E-HU1 2. Certificate of Compliance No. 1014 Appendix A, Section 5.7 (WEST HI-STORM)3. Certificate of Compliance No. 1014 Appendix A, Section 3.2.3 (EAST HI-STORM)4. Certificate of Compliance No. 1008 Appendix A, Amendment 2, Section 2.2.1 (EAST HI-STAR)Month 20XX DR 3-142 EP-AA-1004 (Revision XX)

Dresden Annex I:xelnn Dresden Annex FvaeInn N~uclar RECOGNITION CATEGORY ABNORMAL RAD LEVELS / RADIOLOGICAL EFFLUENTS* RG1 Initiating Condition:

Release of gaseous radioactivity resulting in offsite dose greater than 1000 mRem TEDE or 5000 mRem thyroid CDE.Operating Mode Applicability:

1, 2, 3, 4, 5, D Emergency Action Level (EAL): Notes: " The Emergency Director should declare the event promptly upon determining that the applicable time has been exceeded, or will likely be exceeded.* If an ongoing release is detected and the release start time is unknown, assume that the release duration has exceeded 15 minutes." Classification based on effluent monitor readings assumes that a release path to the environment is established.

If the effluent flow past an effluent monitor is known to have stopped due to actions to isolate the release path, then the effluent monitor reading is no longer valid for classification purposes.* The pre-calculated effluent monitor values presented in EAL #1 should be used for emergency classification assessments until the results from a dose assessment using actual meteorology are available.

1. The sum of readings on the Unit 2/3 Rx Bldg and Unit 2/3 Chimney SPINGs> 7.90 E+09 uCi/sec for > 15 minutes (as determined by DOP 1700-10 or PPDS -Total Noble Gas Release Rate).OR 2. Dose assessment using actual meteorology indicates doses at or beyond the site boundary of EITHER: a. > 1000 mRem TEDE OR b. > 5000 mRem CDE Thyroid OR Month 20XX DR 3-33 EP-AA-1 004 (Revision XX)

Dresden Annex Exelon Nuclear RECOGNITION CATEGORY ABNORMAL RAD LEVELS / RADIOLOGICAL EFFLUENTS RGI (cont)Emergency Action Level (EAL) (cont): 3. Field survey results at or beyond the site boundary indicate EITHER: a. Gamma (closed window) dose rates >1000 mR/hr are expected to continue for > 60 minutes.OR b. Analyses of field survey samples indicate > 5000 mRem CDE Thyroid for 60 minutes of inhalation.

Basis: This IC addresses a release of gaseous radioactivity that results in projected or actual offsite doses greater than or equal to the EPA Protective Action Guides (PAGs). It includes both monitored and un-monitored releases.

Releases of this magnitude will require implementation of protective actions for the public.Radiological effluent EALs are also included to provide a basis for classifying events and conditions that cannot be readily or appropriately classified on the basis of plant conditions alone. The inclusion of both plant condition and radiological effluent EALs more fully addresses the spectrum of possible accident events and conditions.

The TEDE dose is set at the EPA PAG of 1000 mRem while the 5000 mRem thyroid CDE was established in consideration of the 1:5 ratio of the EPA PAG for TEDE and thyroid CDE.Basis Reference(s):

1. NE 199-01 Rev 6, AG1 2. EP-AA-1 12-500 Emergency Environmental Monitoring

3. ODCM Section 12.4 Gaseous Effluents and Total Dose 4. DOP 1700-10, Obtaining And Calculating A Gaseous Release Rate From the Unit 2/3 Chimney, Unit 1 Chimney and Unit 2/3 combined Reactor Vent Using the Eberline Control Terminal 5. EP-EAL-0604 Revision 1, Criteria for Choosing Radiological Gaseous Effluent EAL Threshold Values Dresden Station 6. DEOP 300-2, Radioactivity Release Control Month 20XX DR 3-34 EP-AA-1004 (Revision XX) nractin Annoy flr~Qrg~n An~w Fvinn NucleIar RECOGNITION CATEGORY ABNORMAL RAD LEVELS I RADIOLOGICAL EFFLUENTS RS1 Initiating Condition:

Release of gaseous radioactivity resulting in offsite dose greater than 100 mRem TEDE or 500 mRem thyroid CDE.Operating Mode Applicability:

1, 2, 3, 4, 5, D Emergency Action Level (EAL): Notes: " The Emergency Director should declare the event promptly upon determining that the applicable time has been exceeded, or will likely be exceeded." If an ongoing release is detected and the release start time is unknown, assume that the release duration has exceeded 15 minutes.* Classification based on effluent monitor readings assumes that a release path to the environment is established.

If the effluent flow past an effluent monitor is known to have stopped due to actions to isolate the release path, then the effluent monitor reading is no longer valid for classification purposes." The pre-calculated effluent monitor values presented in EAL #1 should be used for emergency classification assessments until the results from a dose assessment using actual meteorology are available.

1. The sum of readings on the Unit 2/3 Rx Bldg and Unit 2/3 Chimney SPINGs> 7.90 E+08 uCi/sec for > 15 minutes (as determined by DOP 1700-10 or PPDS -Total Noble Gas Release Rate).OR 2. Dose assessment using actual meteorology indicates doses at or beyond the site boundary of EITHER: a. > 100 mRem TEDE OR b. > 500 mRem CDE Thyroid OR 3. Field survey results at or beyond the site boundary indicate EITHER: a. Gamma (closed window) dose rates >100 mR/hr are expected to continue for > 60 minutes.b. OR Analyses of field survey samples indicate > 500 mRem CDE Thyroid for 60 minutes of inhalation.

Month 20XX DR 3-35 EP-AA-1004 (Revision XX)

Dresden AnnexNuclear Dlresden Annex Exellnn N~uclear RECOGNITION CATEGORY ABNORMAL RAD LEVELS / RADIOLOGICAL EFFLUENTS RS1 (cont)Basis: This IC addresses a release of gaseous radioactivity that results in projected or actual offsite doses greater than or equal to 10% of the EPA Protective Action Guides (PAGs).It includes both monitored and un-monitored releases.

Releases of this magnitude are associated with the failure of plant systems needed for the protection of the public.Radiological effluent EALs are also included to provide a basis for classifying events and conditions that cannot be readily or appropriately classified on the basis of plant conditions alone. The inclusion of both plant condition and radiological effluent EALs more fully addresses the spectrum of possible accident events and conditions.

The TEDE dose is set at 10% of the EPA PAG of 1000 mRem while the 500 mRem thyroid CDE was established in consideration of the 1:5 ratio of the EPA PAG for TEDE and thyroid CDE.Escalation of the emergency classification level would be via IC RG1.Basis Reference(s):

1. NEI 99-01 Rev 6, AS1 2. EP-AA-1 12-500 Emergency Environmental Monitoring

3. ODCM Section 12.4 Gaseous Effluents and Total Dose 4. DOP 1700-10, Obtaining And Calculating A Gaseous Release Rate From the Unit 2/3 Chimney, Unit 1 Chimney and Unit 2/3 combined Reactor Vent Using the Eberline Control Terminal 5. EP-EAL-0604 Revision 1, Criteria for Choosing Radiological Gaseous Effluent EAL Threshold Values Dresden Station 6. DEOP 300-2, Radioactivity Release Control Month 20XX DR 3-36 EP-AA-1004 (Revision XX) nroau4an Annav=,v--Irhn Klorl--mr-.~ ~* * *-.. ...~,t ~fl~in t.* in

• Uti -*t.t.in RECOGNITION CATEGORY ABNORMAL RAD LEVELS / RADIOLOGICAL EFFLUENTS RA1 Initiating Condition:

Release of gaseous or liquid radioactivity resulting in offsite dose greater than 10 mRem TEDE or 50 mRem thyroid CDE.Operating Mode Applicability:

1,2,3, 4,5, D Emergency Action Level (EAL): Notes: " The Emergency Director should declare the event promptly upon determining that the applicable time has been exceeded, or will likely be exceeded." If an ongoing release is detected and the release start time is unknown, assume that the release duration has exceeded 15 minutes." Classification based on effluent monitor readings assumes that a release path to the environment is established.

If the effluent flow past an effluent monitor is known to have stopped due to actions to isolate the release path, then the effluent monitor reading is no longer valid for classification purposes." The pre-calculated effluent monitor values presented in EAL #1 should be used for emergency classification assessments until the results from a dose assessment using actual meteorology are available.

1. The sum of readings on the Unit 2/3 Rx Bldg and Unit 2/3 Chimney SPINGs> 7.90 E+07 uCi/sec for > 15 minutes (as determined by DOP 1700-10 or PPDS -Total Noble Gas Release Rate).OR 2. Dose assessment using actual meteorology indicates doses at or beyond the site boundary of EITHER: a. > 10 mRem TEDE OR b. > 50 mRem CDE Thyroid OR Month 20XX DR 3-37 EP-AA-1 004 (Revision XX)

Dresden Annex Dresden Annex ExceInn Nmu~clar RECOGNITION CATEGORY ABNORMAL RAD LEVELS / RADIOLOGICAL EFFLUENTS RA1 (cont)Emergency Action Level (EAL) (cont): 3. Analysis of a liquid effluent sample indicates a concentration or release rate that would result in doses greater than EITHER of the following at or beyond the site boundary a. 10 mRem TEDE for 60 minutes of exposure OR b. 50 mRem CDE Thyroid for 60 minutes of exposure OR 4. Field survey results at or beyond the site boundary indicate EITHER: a. Gamma (closed window) dose rates > 10 mR/hr are expected to continue for a 60 minutes.OR b. Analyses of field survey samples indicate > 50 mRem CDE Thyroid for 60 minutes of inhalation.

Basis: This IC addresses a release of gaseous or liquid radioactivity that results in projected or actual offsite doses greater than or equal to 1% of the EPA Protective Action Guides (PAGs). It includes both monitored and un-monitored releases.

Releases of this magnitude represent an actual or potential substantial degradation of the level of safety of the plant as indicated by a radiological release that significantly exceeds regulatory limits (e.g., a significant uncontrolled release).Radiological effluent EALs are also included to provide a basis for classifying events and conditions that cannot be readily or appropriately classified on the basis of plant conditions alone. The inclusion of both plant condition and radiological effluent EALs more fully addresses the spectrum of possible accident events and conditions.

The TEDE dose is set at 1% of the EPA PAG of 1000 mRem while the 50 mRem thyroid CDE was established in consideration of the 1:5 ratio of the EPA PAG for TEDE and thyroid CDE.Escalation of the emergency classification level would be via IC RS1.Month 20XX DR 3-38 EP-AA-1004 (Revision XX)

Dresden Annex I:yelnn Nuclear Dlresden Annex FwAllnn Nuclea~r RECOGNITION CATEGORY ABNORMAL RAD LEVELS / RADIOLOGICAL EFFLUENTS RAI (cont)Basis Reference(s):

1. NEI 99-01 Rev 6, AA1 2. ODCM Section 12.3 Liquid Effluents 3. ODCM Section 12.4 Gaseous Effluents 4. DOP 1700-10, Obtaining And Calculating A Gaseous Release Rate From the Unit 2/3 Chimney, Unit 1 Chimney and Unit 2/3 combined Reactor Vent Using the Eberline Control Terminal 5. UNIT 2/3 DAN 2223-6 A-12 "2/3 RADWASTE DISCHARGE HIGH RADIATION" 6. UNIT 2/3 DOP 2000-110, Radioactive Waste Discharge to River With the Off-Stream Liquid Effluent Monitor Operable 7. UNIT 2/3 DOP 2000-109, Waste Surge Tank Batching for a Radwaste River Discharge 8. Structural Drawing B-01A Composite Site Plan Dresden Station Units 1, 2 & 3 9. EP-EAL-0604 Revision 1, Criteria for Choosing Radiological Gaseous Effluent EAL Threshold Values Dresden Station 10. DEOP 300-2, Radioactivity Release Control 11. EP-EAL-0620 Revision 0, Dresden Criteria for Choosing Radiological Liquid Effluent EAL Threshold Values Month 20XX DR 3-39 EP-AA-1004 (Revision XX)

Dresden Annex Exelon Nuclear RECOGNITION CATEGORY ABNORMAL RAD LEVELS / RADIOLOGICAL EFFLUENTS RU1 Initiating Condition:

Release of gaseous or liquid radioactivity greater than 2 times the ODCM limits for 60 minutes or longer.Operating Mode Applicability:

1,2, 3,4, 5, D Emergency Action Level (EAL): Notes: " The Emergency Director should declare the event promptly upon determining that the applicable time has been exceeded, or will likely be exceeded." If an ongoing release is detected and the release start time is unknown, assume that the release duration has exceeded 60 minutes.* Classification based on effluent monitor readings assumes that a release path to the environment is established.

If the effluent flow past an effluent monitor is known to have stopped due to actions to isolate the release path, then the effluent monitor reading is no longer valid for classification purposes.1. Reading on ANY of the following effluent monitors > 2 times alarm setpoint established by a current radioactive release discharge permit for ?: 60 minutes." Radwaste Effluent Monitor 2/3-2001-948 OR" Discharge Permit specified monitor OR 2. The sum of readings on the Unit 2/3 Rx Bldg and Unit 2/3 Chimney SPINGs> 9.02 E+05 uCi/sec for > 60 minutes (as determined by DOP 1700-10 or PPDS -Total Noble Gas Release Rate).OR 3. Confirmed sample analyses for gaseous or liquid releases indicate concentrations or release rates > 2 times ODCM Limit with a release duration of> 60 minutes.Month 20XX DR 3-40 EP-AA-1004 (Revision XX)

Dresden Annex Exelon Nuclear RECOGNITION CATEGORY ABNORMAL RAD LEVELS / RADIOLOGICAL EFFLUENTS RU1 (cont)Basis: This IC addresses a potential decrease in the level of safety of the plant as indicated by a low-level radiological release that exceeds regulatory commitments for an extended period of time (e.g., an uncontrolled release).

It includes any gaseous or liquid radiological release, monitored or un-monitored, including those for which a radioactivity discharge permit is normally prepared.Nuclear power plants incorporate design features intended to control the release of radioactive effluents to the environment.

Further, there are administrative controls established to prevent unintentional releases, and to control and monitor intentional releases.

The occurrence of an extended, uncontrolled radioactive release to the environment is indicative of degradation in these features and/or controls.Radiological effluent EALs are also included to provide a basis for classifying events and conditions that cannot be readily or appropriately classified on the basis of plant conditions alone. The inclusion of both plant condition and radiological effluent EALs more fully addresses the spectrum of possible accident events and conditions.

Releases should not be prorated or averaged.

For example, a release exceeding 4 times release limits for 30 minutes does not meet the EAL.EAL #1 Basis This EAL addresses radioactivity releases that cause effluent radiation monitor readings to exceed 2 times the limit established by a radioactivity discharge permit. This EAL will typically be associated with planned batch releases from non-continuous release pathways (e.g., radwaste, waste gas).The effluent monitors listed are those normally used for planned discharges.

If a discharge is performed using a different flowpath or effluent monitor other than those listed (e.g., a portable or temporary effluent monitor), then the declaration criteria will be based on the monitor specified in the Discharge Permit.EAL #2 Basis This EAL addresses normally occurring continuous radioactivity releases from monitored gaseous effluent pathways.EAL #3 Basis This EAL addresses uncontrolled gaseous or liquid releases that are detected by sample analyses or environmental surveys, particularly on unmonitored pathways (e.g., spills of radioactive liquids into storm drains, heat exchanger leakage in river water systems, etc.).Escalation of the emergency classification level would be via IC RAI.Month 20XX DR 3-41 EP-AA-1004 (Revision XX)

Dresden Annex Exalon Nuclear RECOGNITION CATEGORY ABNORMAL RAD LEVELS / RADIOLOGICAL EFFLUENTS RUI (cont)Basis Reference(s):

1. NEI 99-01 Rev 6, AU1 2. ODCM Section 12.3 Liquid Effluents 3. ODCM Section 12.4 Gaseous Effluents 4. DOP 1700-10, Obtaining And Calculating A Gaseous Release Rate From the Unit 2/3 Chimney, Unit 1 Chimney and Unit 2/3 combined Reactor Vent Using the Eberline Control Terminal 5. UNIT 2/3 DAN 2223-6 A-12 "2/3 RADWASTE DISCHARGE HIGH RADIATION" 6. UNIT 2/3 DOP 2000-110, Radioactive Waste Discharge to River With the Off-Stream Liquid Effluent Monitor Operable 7. UNIT 2/3 DOP 2000-109, Waste Surge Tank Batching for a Radwaste River Discharge 8. EP-EAL-0604 Revision 1, Criteria for Choosing Radiological Gaseous Effluent EAL Threshold Values Dresden Station 9. DEOP 300-2, Radioactivity Release Control Month 20XX DR 3-42 EP-AA-1004 (Revision XX)

N Hr.lp_;ir Dlresden Annex Exelon NuclerIAr RECOGNITION CATEGORY ABNORMAL RAD LEVELS / RADIOLOGICAL EFFLUENTS RA2 Initiating Condition:

Significant lowering of water level above, or damage to, irradiated fuel.Operating Mode Applicability:

1, 2, 3, 4, 5, D Emergency Action Level (EAL): 1. Uncovery of irradiated fuel in the REFUELING PATHWAY.OR 2. Damage to irradiated fuel resulting in a release of radioactivity from the fuel as indicated by ANY Table R1 Radiation Monitor reading >1000 mRem/hr.Table RI Fuel Handling Incident Radiation Monitors" Refuel Floor High Range ARM Station #2(4)* Fuel Pool Radiation Monitor Basis: REFUELING PATHWAY: all the cavities, tubes, canals and pools through which irradiated fuel may be moved or stored, but not including the reactor vessel below the flange.IMMINENT:

The trajectory of events or conditions is such that an EAL will be met within a relatively short period of time regardless of mitigation or corrective actions.CONFINEMENT BOUNDARY:

The irradiated fuel dry storage cask barrier(s) between areas containing radioactive substances and the environment.

This IC addresses events that have caused IMMINENT or actual damage to an irradiated fuel assembly.

These events present radiological safety challenges to plant personnel and are precursors to a release of radioactivity to the environment.

As such, they represent an actual or potential substantial degradation of the level of safety of the plant.This IC applies to irradiated fuel that is licensed for dry storage up to the point that the loaded storage cask is sealed. Once sealed, damage to a loaded cask causing loss of the CONFINEMENT BOUNDARY is classified in accordance with IC E-HUI.Month 20XX DR 3-43 EP-AA-1004 (Revision XX)

Dresden Annex Exelon Nuclear RECOGNITION CATEGORY ABNORMAL RAD LEVELS / RADIOLOGICAL EFFLUENTS RA2 (cont)Initiating Condition:

EAL #1 Basis This EAL escalates from RU2 in that the loss of level, in the affected portion of the REFUELING PATHWAY, is of sufficient magnitude to have resulted in uncovery of irradiated fuel. Indications of irradiated fuel uncovery may include direct or indirect visual observation (e.g., reports from personnel or camera images), as well as significant changes in water and radiation levels, or other plant parameters.

Computational aids may also be used (e.g., a boil-off curve). Classification of an event using this EAL should be based on the totality of available indications, reports and observations.

While an area radiation monitor could detect a rise in a dose rate due to a lowering of water level in some portion of the REFUELING PATHWAY, the reading may not be a reliable indication of whether or not the fuel is actually uncovered.

To the degree possible, readings should be considered in combination with other available indications of inventory loss.A drop in water level above irradiated fuel within the reactor vessel may be classified in accordance Recognition Category C during the Cold Shutdown and Refueling modes.EAL #2 Basis This EAL addresses a release of radioactive material caused by mechanical damage to irradiated fuel. Damaging events may include the dropping, bumping or binding of an assembly, or dropping a heavy load onto an assembly.

Spent fuel uncovery represents a major ALARA concern in that radiation levels could exceed 10,000 R/hr on the refuel bridge when fuel uncovery begins. The value of 1000 mR/hr was conservatively chosen for classification purposes.

A rise in readings on radiation monitors should be considered in conjunction with in-plant reports or observations of a potential fuel damaging event (e.g., a fuel handling accident).

Escalation of the emergency would be based on either Recognition Category Ror C ICs.Basis Reference(s):

1. NE 199-01 Rev 6, AA2 2. DAN 902(3)-3 C-1 6(E-16) Reactor Building Fuel Pool Hi Radiation 3. DAN 902(3)-3 B-1 Refuel Floor Hi Radiation 4. DAN 902(3)-3 A-3(F-14)

Reactor building Vent Hi-Hi Radiation 5. UFSAR 9.1 6. DAN 902(3)-4 D-24 Fuel Pool Skimmer Tank Level Lo 7. DIP 0260-01 Refuel Outage Reactor Vessel and Cavity Level Instrumentation

8. DFP 0850-01 Water Level Loss in SFP or Cavity 9. DOP 1900-03 Reactor Cavity, Dryer/Separator Storage Pit and Fuel Pool Level Control Month 20XX DR 3-44 EP-AA-1004 (Revision XX)

Dresden Annex I=xelnn Nuclear Dresden Annex Exelon Nuclear RECOGNITION CATEGORY ABNORMAL RAD LEVELS / RADIOLOGICAL EFFLUENTS RU2 Initiating Condition:

UNPLANNED loss of water level above irradiated fuel.Operating Mode Applicability:

1, 2,3,4,5, D Emergency Action Level (EAL): 1. a. UNPLANNED water level drop in the REFUELING PATHWAY as indicated by ANY of the following: " Refueling Cavity water level < 466 in. (Refuel Outage Reactor Vessel and Cavity Level Instrument LI 2(3)-263-114)

OR* Spent Fuel Pool water level < 19 ft. above the fuel (< 33 ft. 9 in.indicated level).OR* Indication or report of a drop in water level in the REFUELING PATHWAY.AND b. UNPLANNED Area Radiation Monitor reading rise on ANY radiation monitors in Table RI.Table RI Fuel Handling Incident Radiation Monitors" Refuel Floor High Range ARM Station #2(4)" Fuel Pool Radiation Monitor Month 20XX DR 3-45 EP-AA-1004 (Revision XX)

Dresden Annex Exelon Nuclear RECOGNITION CATEGORY ABNORMAL RAD LEVELS / RADIOLOGICAL EFFLUENTS RU2 (cont)Basis: UNPLANNED:

A parameter change or an event that is not 1) the result of an intended evolution or 2) an expected plant response to a transient.

The cause of the parameter change or event may be known or unknown.REFUELING PATHWAY: all the cavities, tubes, canals and pools through which irradiated fuel may be moved or stored, but not including the reactor vessel below the flange.This IC addresses a loss in water level above irradiated fuel sufficient to cause elevated radiation levels. This condition could be a precursor to a more serious event and is also indicative of a minor loss in the ability to control radiation levels within the plant. It is therefore a potential degradation in the level of safety of the plant.A water level loss will be primarily determined by indications from available level instrumentation.

Other sources of level indications may include reports from plant personnel (e.g., from a refueling crew) or video camera observations (if available) or from any other temporarily installed monitoring instrumentation.

A significant drop in the water level may also cause a rise in the radiation levels of adjacent areas that can be detected by monitors in those locations.

The effects of planned evolutions should be considered.

For example, a refueling bridge area radiation monitor reading may rise due to planned evolutions such as lifting of the reactor vessel head or movement of a fuel assembly.

Note that this EAL is applicable only in cases where the elevated reading is due to an UNPLANNED loss of water level.A drop in water level above irradiated fuel within the reactor vessel may be classified in accordance Recognition Category C during the Cold Shutdown and Refueling modes.Escalation of the emergency classification level would be via IC RA2.Month 20XX DR 3-46 EP-AA-1004 (Revision XX)

Dresden Annex Exelon Nuclear RECOGNITION CATEGORY ABNORMAL RAD LEVELS / RADIOLOGICAL EFFLUENTS RU2 (cont)Basis Reference(s):

1. NEI 99-01 Rev 6, AU2 2. RP-AA-203 Exposure Control and Authorization

3. Technical Specifications 3.7.8 4. Technical Specifications 3.9.6 5. UFSAR 9.1 6. DAN 902(3)-4 D-24 Fuel Pool Skimmer Tank Level Lo 7. DIP 0260-01 Refuel Outage Reactor Vessel and Cavity Level Instrumentation

8. DFP 0850-01 Water Level Loss in SFP or Cavity 9. DOP 1900-03 Reactor Cavity, Dryer/Separator Storage Pit and Fuel Pool Level Control 10. DGP 02-02, Reactor Vessel Slow Fill 11. DAN 902(3)-3 C-16(E-16)

Reactor Building Fuel Pool Hi Radiation 12. DAN 902(3)-3 B-1 Refuel Floor Hi Radiation 13. DAN 902(3)-3 A-3(F-14)

Reactor building Vent Hi-Hi Radiation Month 20XX DR 3-47 EP-AA-1004 (Revision XX)

Dresden Annex Exelon Nuclear RECOGNITION CATEGORY ABNORMAL RAD LEVELS / RADIOLOGICAL EFFLUENTS RA3 Initiating Condition:

Radiation levels that impede access to equipment necessary for normal plant operations, cooldown or shutdown.Operating Mode Applicability:

1,2,3, 4,5, D Emergency Action Level (EAL): Note:* If the equipment in the room or area listed in Table R3 was already inoperable, or out of service, before the event occurred, then no emergency classification is warranted.

1. Dose rate > 15 mR/hr in ANY of the following Table R2 areas: Table R2 Areas Requiring Continuous Occupancy" Main Control Room (Unit 2 ARM Station #22)* Central Alarm Station -(by survey)OR 2. UNPLANNED event results in radiation levels that prohibit or significantly impede access to ANY of the following Table R3 plant rooms or areas: Table R3 Areas with Entry Related Mode Applicability Area Entry Related Mode Applicability Reactor Building*

Modes 3, 4, and 5*Areas required to establish shutdown cooling Month 20XX DR 3-48 EP-AA-1004 (Revision XX)

Dresden Annex Dresden Annex Exelnn Nucler~I RECOGNITION CATEGORY ABNORMAL RAD LEVELS / RADIOLOGICAL EFFLUENTS RA3 (cont)Basis: UNPLANNED:

A parameter change or an event that is not 1) the result of an intended evolution or 2) an expected plant response to a transient.

The cause of the parameter change or event may be known or unknown.This IC addresses elevated radiation levels in certain plant rooms/areas sufficient to preclude or impede personnel from performing actions necessary to transition the plant from normal plant operation to cooldown and shutdown as specified in normal plant procedures.

As such, it represents an actual or potential substantial degradation of the level of safety of the plant. The Emergency Director should consider the cause of the increased radiation levels and determine if another IC may be applicable.

Table R3 is a list of plant rooms or areas with entry-related mode applicability that contain equipment which require a manual/local action necessary to transition the plant from normal plant operation to cooldown and shutdown as specified in normal operating procedures (establish shutdown cooling), where if this action is not completed the plant would not be able to attain and maintain cold shutdown.

This Table does not include rooms or areas for which entry is required solely to perform actions of an administrative or record keeping nature (e.g., normal rounds or routine inspections).

Rooms and areas listed in EAL #1 do not need to be included in EAL #2, including the Control Room.For EAL #2, an Alert declaration is warranted if entry into the affected room/area is, or may be, procedurally required during the plant operating mode in effect and the elevated radiation levels preclude the ability to place shutdown cooling in service. The emergency classification is not contingent upon whether entry is actually necessary at the time of the increased radiation levels. Access should be considered as impeded if extraordinary measures are necessary to facilitate entry of personnel into the affected room/area (e.g., installing temporary shielding beyond that required by procedure, requiring use of non-routine protective equipment, requesting an extension in dose limits beyond normal administrative limits).An emergency declaration is not warranted if any of the following conditions apply.* The plant is in an operating mode different than the mode specified for the affected room/area (i.e., entry is not required during the operating mode in effect at the time of the elevated radiation levels). For example, the plant is in Mode 1 when the radiation rise occurs, and the procedures used for normal operation, cooldown and shutdown do not require entry into the affected room until Mode 4.The increased radiation levels are a result of a planned activity that includes compensatory measures which address the temporary inaccessibility of a room or area (e.g., radiography, spent filter or resin transfer, etc.).Month 20XX DR 3-49 EP-AA-1004 (Revision XX)

Dresden Annex Exelon Nuclear RECOGNITION CATEGORY ABNORMAL RAD LEVELS / RADIOLOGICAL EFFLUENTS RA3 (cont)Basis (cont): " The action for which room/area entry is required is of an administrative or record keeping nature (e.g., normal rounds or routine inspections)." The access control measures are of a conservative or precautionary nature, and would not actually prevent or impede a required action.Escalation of the emergency classification level would be via Recognition Category R, C or F ICs.Basis Reference(s):

1. NEI 99-01 Rev 6, AA3 2. DOP 1800-01 Area Radiation Monitors 3. FSAR Section 3.2 Classification of Structures, Components and Systems 4. General Arrangement Drawings M-3, M-4, M-4A, M-5 and M-10 5. DEOP 300-2, Radioactivity Release Control Month 20XX DR 3-50 EP-AA-1004 (Revision XX)

Dresden Annex Exelon Nuclear RECOGNITION CATEGORY ABNORMAL RAD LEVELS / RADIOLOGICAL EFFLUENTS RU3 Initiating Condition:

Reactor coolant activity greater than Technical Specification allowable limits.Operating Mode Applicability:

1,2,3 Emergency Action Level (EAL): 1. Offgas system radiation monitor HI-HI alarm.OR 2. Specific coolant activity > 4.0 uCI/gm Dose equivalent 1-131.Basis: This IC addresses a reactor coolant activity value that exceeds an allowable limit specified in Technical Specifications.

This condition is a precursor to a more significant event and represents a potential degradation of the level of safety of the plant.Conditions that cause the specified monitor to alarm that are not related to fuel clad degradation should not result in the declaration of an Unusual Event.This EAL addresses site-specific radiation monitor readings that provide indication of a degradation of fuel clad integrity.

An Unusual Event is only warranted when actual fuel clad damage is the cause of the elevated coolant sample activity (as determined by laboratory confirmation).

Fuel clad damage should be assumed to be the cause of elevated Reactor Coolant activity unless another cause is known.Escalation of the emergency classification level would be via ICs FA1 or the Recognition Category R ICs.Basis Reference(s):

1. NEI 99-01 Rev 6, SU3 2. Technical Specifications 3.4.6, RCS Specific Activity 3. DAN 902(3)-3 C-2(D-2) Off Gas Rad Monitor Hi-Hi 4. Technical Specifications 3.7.6, Main Condenser Offgas 5. DGA 16 Coolant High Activity/Fuel Element Failure Month 20XX DR 3-51 EP-AA-1004 (Revision XX)

Annex Dlresden Annex FvA-Inn Nuci--r~I RECOGNITION CATEGORY FISSION PRODUCT BARRIER DEGRADATION FG1 Initiating Condition:

Loss of ANY Two Barriers AND Loss or Potential Loss of the third barrier.Operating Mode Applicability:

1,2,3 Emergency Action Level (EAL): Refer to Fission Product Barrier Loss and Potential Loss threshold values to determine barrier status.Basis: Fuel Cladding, RCS and Containment comprise the fission product barriers.At the General Emergency classification level each barrier is weighted equally.Basis Reference(s):

1. NEI 99-01 Rev 6, Table 9-F-2 Month 20XX DR 3-52 EP-AA-1004 (Revision XX)

Dresden Annex Exelon Nuclear RECOGNITION CATEGORY FISSION PRODUCT BARRIER DEGRADATION FS1 Initiating Condition:

Loss or Potential Loss of ANY two barriers.Operating Mode Applicability:

1,2,3 Emergency Action Level (EAL): Refer to Fission Product Barrier Loss and Potential Loss threshold values to determine barrier status.Basis: Fuel Cladding, RCS and Containment comprise the fission product barriers.At the Site Area Emergency classification level, each barrier is weighted equally.Basis Reference(s):

1. NEI 99-01 Rev 6, Table 9-F-2 Month 20XX DR 3-53 EP-AA-1004 (Revision XX)

Annex D .resden Annex Eineln NIuclear RECOGNITION CATEGORY FISSION PRODUCT BARRIER DEGRADATION FAI Initiating Condition:

ANY Loss or ANY Potential Loss of either Fuel Clad or RCS.Operating Mode Applicability:

1,2,3 Emergency Action Level (EAL): Refer to Fission Product Barrier Loss and Potential Loss threshold values to determine barrier status.Basis: Fuel Cladding, RCS and Containment comprise the fission product barriers.At the Alert classification level, Fuel Cladding and RCS barriers are weighted more heavily than the Containment barrier. Unlike the Containment barrier, loss or potential loss of either the Fuel Cladding or RCS barrier may result in the relocation of radioactive materials or degradation of core cooling capability.

Note that the loss or potential loss of Containment barrier in combination with loss or potential loss of either Fuel Cladding or RCS barrier results in declaration of a Site Area Emergency under EAL FSI.Basis Reference(s):

1. NEI 99-01 Rev 6, Table 9-F-2 Month 20XX DR 3-54 EP-AA-1004 (Revision XX) nroadian Annav I:::vg1ln n me.,rlar RECOGNITION CATEGORY FISSION PRODUCT BARRIER DEGRADATION FC1 Initiating Condition:

RCS Activity Operating Mode Applicability:

1,2,3 Fission Product Barrier (FPB) Threshold:

LOSS Coolant activity > 300 uCi/gm Dose Equivalent 1-131.Basis: This threshold indicates that RCS radioactivity concentration is greater than 300 PiCi/gm dose equivalent 1-131. Reactor coolant activity above this level is greater than that expected for iodine spikes and corresponds to an approximate range of 2% to 5% fuel clad damage. Since this condition indicates that a significant amount of fuel clad damage has occurred, it represents a loss of the Fuel Clad Barrier.It is recognized that sample collection and analysis of reactor coolant with highly elevated activity levels could require several hours to complete.

Nonetheless, a sample-related threshold is included as a backup to other indications.

There is no Potential Loss threshold associated with RCS Activity.Basis Reference(s):

1. NEI 99-01 Rev 6, Table 9-F-2 2. DGA-16, Coolant High Activity / Fuel Element Failure Month 20XX DR 3-55 EP-AA-1004 (Revision XX)

Dresden Annex I=xelon Nuclear Dresden Annex Exelnn Nucla~r RECOGNITION CATEGORY FISSION PRODUCT BARRIER DEGRADATION FC2 Initiating Condition:

RPV Water Level Operating Mode Applicability:

1,2,3 Fission Product Barrier (FPB) Threshold:

LOSS 1. Plant conditions indicate Primary Containment flooding is required.POTENTIAL LOSS 2. RPV water level cannot be restored and maintained

> -143 inches (TAF)OR 3. RPV water level cannot be determined.

Basis: RPV values are actual levels, not indicated levels. Therefore, they may need level compensation depending on conditions.

Compensated values may be used in accordance with the Technical Support Guidelines.

Loss Threshold

1. 1 Basis The Loss threshold represents the EOP requirement for primary containment flooding.This is identified in the BWROG EPGs/SAMGs when the phrase, "Primary Containment Flooding Is Required," appears. Since a site-specific RPV water level is not specified here, the Loss threshold phrase, "Primary containment flooding required," also accommodates the EOP need to flood the primary containment when RPV water level cannot be determined and core damage due to inadequate core cooling is believed to be occurring.

Potential Loss Threshold

1. 2 and #3 Basis This water level corresponds to the top of the active fuel and is used in the EOPs to indicate a challenge to core cooling.The RPV water level threshold is the same as RCS Barrier RC2 Loss threshold.

Thus, this threshold indicates a Potential Loss of the Fuel Clad barrier and a Loss of the RCS barrier that appropriately escalates the emergency classification level to a Site Area Emergency.

This threshold is considered to be exceeded when, as specified in the site-specific EOPs, RPV water level cannot be restored and maintained above the specified level following depressurization of the RPV (either manually, automatically or by failure of the RCS barrier) or when procedural guidance or a lack of low pressure RPV injection sources preclude Emergency RPV depressurization.

Month 20XX DR 3-56 EP-AA-1004 (Revision XX)

Dresden Annex Exelon Nuclear RECOGNITION CATEGORY FISSION PRODUCT BARRIER DEGRADATION FC2 (cont)Basis (cont): EOPs allow the operator a wide choice of RPV injection sources to consider when restoring RPV water level to within prescribed limits. EOPs also specify depressurization of the RPV in order to facilitate RPV water level control with low-pressure injection sources.In some events, elevated RPV pressure may prevent restoration of RPV water level until pressure drops below the shutoff heads of available injection sources. Therefore, this Fuel Clad barrier Potential Loss is met only after either: 1) the RPV has been depressurized, or required emergency RPV depressurization has been attempted, giving the operator an opportunity to assess the capability of low-pressure injection sources to restore RPV water level or 2) no low pressure RPV injection systems are available, precluding RPV depressurization in an attempt to minimize loss of RPV inventory.

The term "cannot be restored and maintained above" means the value of RPV water level is not able to be brought above the specified limit (top of active fuel). The determination requires an evaluation of system performance and availability in relation to the RPV water level value and trend. A threshold prescribing declaration when a threshold value cannot be restored and maintained above a specified limit does not require immediate action simply because the current value is below the top of active fuel, but does not permit extended operation below the limit; the threshold must be considered reached as soon as it is apparent that the top of active fuel cannot be attained.Entry into the "Steam Cooling" leg of the EOP's would be an example of an inability to"restore and maintain" level above TAF resulting in this threshold being met.In high-power ATWS/failure to scram events, EOPs may direct the operator to deliberately lower RPV water level in order to reduce reactor power. Although such action is a challenge to core cooling and the Fuel Clad barrier, the immediate need to reduce reactor power is the higher priority.

For such events, ICs MA3 or MS3 will dictate the need for emergency classification.

Since the loss of ability to determine if adequate core cooling is being provided presents a significant challenge to the fuel clad barrier, a potential loss of the fuel clad barrier is specified.

Month 20XX DR 3-57 EP-AA-1004 (Revision XX)

Dresden Annex Exelon Nuclear RECOGNITION CATEGORY FISSION PRODUCT BARRIER DEGRADATION FC2 (cont)Basis Reference(s):

1. NEI 99-01 Rev 6, Table 9-F-2 2. DEOP 100 RPV Control 3. DEOP 400-5 Failure to Scram 4. DEOP 400-1 RPV Flooding 5. DEOP 0010-00 Guidelines for Use of Dresden Emergency Operating Procedures and Severe Accident Management Guidelines

6. Technical Support Guidelines Month 20XX DR 3-58 EP-AA-1 004 (Revision XX) n'ra*crian Annoy=,v'ft1rn Khir-Igmr RECOGNITION CATEGORY FISSION PRODUCT BARRIER DEGRADATION FC5 Initiating Condition:

Primary Containment Radiation Operating Mode Applicability:

1,2,3 Fission Product Barrier (FPB) Threshold:

LOSS Drywell radiation monitor reading > 6.70 E+02 R/hr (670 R/hr).Basis: The radiation monitor reading corresponds to an instantaneous release of all reactor coolant mass into the primary containment, assuming that reactor coolant activity equals 300 p.Ci/gm dose equivalent 1-131. Reactor coolant activity above this level is greater than that expected for iodine spikes and corresponds to an approximate range of 2% to 5% fuel clad damage. Since this condition indicates that a significant amount of fuel clad damage has occurred, it represents a loss of the Fuel Clad Barrier.The radiation monitor reading in this threshold is higher than that specified for RCS Barrier RC5 Loss Threshold since it indicates a loss of both the Fuel Clad Barrier and the RCS Barrier. Note that a combination of the two monitor readings appropriately escalates the emergency classification level to a Site Area Emergency.

There is no Fuel Clad Barrier Potential Loss threshold associated with Primary Containment Radiation.

Basis Reference(s):

1. NEI 99-01 Rev 6, Table 9-F-2 2. Core Damage Assessment Methodology (CDAM)Month 20XX DR 3-59 EP-AA-1004 (Revision XX)

Dresden Annex Exelon Nuclear RECOGNITION CATEGORY FISSION PRODUCT BARRIER DEGRADATION FC7 Initiating Condition:

Emergency Director Judgment.Operating Mode Applicability:

1,2,3 Fission Product Barrier (FPB) Threshold:

LOSS 1. Any condition in the opinion of the Emergency Director that indicates Loss of the Fuel Clad Barrier.POTENTIAL LOSS 2. Any condition in the opinion of the Emergency Director that indicates Potential Loss of the Fuel Clad Barrier.Basis: Loss Threshold

1. 1 Basis This threshold addresses any other factors that are to be used by the Emergency Director in determining whether the Fuel Clad Barrier is lost.Potential Loss Threshold

1. 2 Basis This threshold addresses any other factors that may be used by the Emergency Director in determining whether the Fuel Clad Barrier is potentially lost. The Emergency Director should also consider whether or not to declare the barrier potentially lost in the event that barrier status cannot be monitored.

Basis Reference(s):

1. NEI 99-01 Rev 6, Table 9-F-2 Month 20XX DR 3-60 EP-AA-1004 (Revision XX)

Dresden Annex Exelon Nuclear RECOGNITION CATEGORY FISSION PRODUCT BARRIER DEGRADATION RC2 Initiating Condition:

RPV Water Level Operating Mode Applicability:

1,2,3 Fission Product Barrier (FPB) Threshold:

LOSS 1. RPV water level cannot be restored and maintained

> -143 inches (TAF)OR 2. RPV water level cannot be determined.

Basis: RPV values are actual levels, not indicated levels. Therefore, they may need level compensation depending on conditions.

Compensated values may be used in accordance with the Technical Support Guidelines.

This water level corresponds to the Top of Active Fuel (TAF) and is used in the EOPs to indicate challenge to core cooling.The RPV water level threshold is the same as Fuel Clad Barrier FC2 Potential Loss threshold.

Thus, this threshold indicates a Loss of the RCS barrier and Potential Loss of the Fuel Clad barrier and that appropriately escalates the emergency classification level to a Site Area Emergency.

This threshold is considered to be exceeded when, as specified in the site-specific EOPs, RPV water level cannot be restored and maintained above the specified level following depressurization of the RPV (either manually, automatically or by failure of the RCS barrier) or when procedural guidance or a lack of low pressure RPV injection sources preclude Emergency RPV depressurization EOPs allow the operator a wide choice of RPV injection sources to consider when restoring RPV water level to within prescribed limits. EOPs also specify depressurization of the RPV in order to facilitate RPV water level control with low-pressure injection sources. In some events, elevated RPV pressure may prevent restoration of RPV water level until pressure drops below the shutoff heads of available injection sources. Therefore, this RCS barrier Loss is met only after either: 1) the RPV has been depressurized, or required emergency RPV depressurization has been attempted, giving the operator an opportunity to assess the capability of low-pressure injection sources to restore RPV water level or 2) no low pressure RPV injection systems are available, precluding RPV depressurization in an attempt to minimize loss of RPV inventory.

Month 20XX DR 3-61 EP-AA-1 004 (Revision XX)

Dresden Annex Exelon Nuclear RECOGNITION CATEGORY FISSION PRODUCT BARRIER DEGRADATION RC2 (cont)Basis (cont): The term, "cannot be restored and maintained above," means the value of RPV water level is not able to be brought above the specified limit (top of active fuel). The determination requires an evaluation of system performance and availability in relation to the RPV water level value and trend. A threshold prescribing declaration when a threshold value cannot be restored and maintained above a specified limit does not require immediate action simply because the current value is below the top of active fuel, but does not permit extended operation beyond the limit; the threshold must be considered reached as soon as it is apparent that the top of active fuel cannot be attained.Entry into the "Steam Cooling" leg of the EOP's would be an example of an inability to"restore and maintain" level above TAF resulting in this threshold being met.In high-power ATWS/failure to scram events, EOPs may direct the operator to deliberately lower RPV water level in order to reduce reactor power. Although such action is a challenge to core cooling and the Fuel Clad barrier, the immediate need to reduce reactor power is the higher priority.

For such events, ICs MA3 or MS3 will dictate the need for emergency classification.

There is no RCS Potential Loss threshold associated with RPV Water Level.Basis Reference(s):

1. NEI 99-01 Rev 6, Table 9-F-2 2. DEOP100 RPV Control 3. DEOP 0010-00 Guidelines for Use of Dresden Emergency Operating Procedures and Severe Accident Management Guidelines

4. Technical Support Guidelines Month 20XX DR 3-62 EP-AA-1004 (Revision XX)

Dry.dAn Annex Dlresden Annexr ExceInn NuclerIAr RECOGNITION CATEGORY FISSION PRODUCT BARRIER DEGRADATION RC3 Initiating Condition:

Primary Containment Pressure Operating Mode Applicability:

1,2,3 Fission Product Barrier (FPB) Threshold:

LOSS 1. Drywell pressure >2.0 psig.AND 2. Drywell pressure rise is due to RCS leakage.Basis: The > 2.0 psig primary containment pressure is the Drywell high pressure setpoint which indicates a LOCA by automatically initiating ECCS.The second threshold condition focuses the fission product barrier loss threshold on a failure of the RCS instead of the non-LOCA malfunctions that may adversely affect primary containment pressure.

Pressures of this magnitude can be caused by non-LOCA events such as a loss of Drywell cooling or inability to control primary containment vent/purge.

The release of mass from the RCS due to the as-designed/expected operation of any relief valve does not warrant an emergency classification.

A stuck-open Electromatic relief valve (ERV)/Target Rock SRV or ERV/ Target Rock SRV leakage is not considered either identified or unidentified leakage by Technical Specifications and, therefore, is not applicable to this EAL.There is no Potential Loss threshold associated with Primary Containment Pressure.Basis Reference(s):

1. NEI 99-01 Rev 6, Table 9-F-2 2. Technical Specifications Table 3.3.5.1-1 3. DAN 902(3)-5 D-11 4. DEOP 100 RPV Control 5. DEOP 200-1 Primary Containment Control Month 20XX DR 3-63 EP-AA-1 004 (Revision XX)

Dresden Anneax I=xelnn Nuclear D.......Ann.x mExelnn Nuici.ear RECOGNITION CATEGORY FISSION PRODUCT BARRIER DEGRADATION RC4 Initiating Condition:

RCS Leak Rate Operating Mode Applicability:

1,2,3 Fission Product Barrier (FPB) Threshold:

LOSS 1. UNISOLABLE Main Steam Line (MSL), Isolation Condenser, HPCI, Feedwater, or RWCU line break.OR 2. Emergency RPV Depressurization is required.POTENTIAL LOSS 3. UNISOLABLE primary system leakage that results in EITHER of the following:

a. Secondary Containment area temperature

> DEOP 300-1 Maximum Normal operating levels.OR b. Secondary Containment area radiation level > DEOP 300-1 Maximum Normal operating level.Basis: UNISOLABLE:

An open or breached system line that cannot be isolated, remotely or locally.Classification of a system break over system leakage is based on information available to the Control Room from the event. Indications that should be considered are:* Reports describing magnitude of steam or water release.* Use of system high flow alarms / indications, if available," Significant changes in makeup requirements,* Abnormal reactor water level changes in response to the event.The use of the above indications provides the Control Room the bases to determine that the on going event is more significant than the indications that would be expected from system leakage and therefore should be considered a system break.Month 20XX DR 3-64 EP-AA-1004 (Revision XX)

Dresden Annex I=xelon N Dresden Annex Exelnn Nucler~I RECOGNITION CATEGORY FISSION PRODUCT BARRIER DEGRADATION RC4 (cont)Basis (cont): Loss Threshold

1. 1 Basis Large high-energy lines that rupture outside primary containment can discharge significant amounts of inventory and jeopardize the pressure-retaining capability of the RCS until they are isolated.

If it is determined that the ruptured line cannot be promptly isolated, the RCS barrier Loss threshold is met.Loss Threshold

1. 2 Basis Emergency RPV Depressurization in accordance with the EOPs is indicative of a loss of the RCS barrier. If Emergency RPV Depressurization is performed, the plant operators are directed to open safety relief valves (SRVs) and keep them open. Even though the RCS is being vented into the Torus, a Loss of the RCS barrier exists due to the diminished effectiveness of the RCS to retain fission products within its boundary.Potential Loss Threshold

1. 3 Basis Potential loss of RCS based on primary system leakage outside the primary containment is determined from EOP temperature or radiation Max Normal Operating values in areas such as main steam line tunnel, HPCI, etc., which indicate a direct path from the RCS to areas outside primary containment.

A Max Normal Operating value is the highest value of the identified parameter expected to occur during normal plant operating conditions with all directly associated support and control systems functioning properly.The indicators reaching the threshold barriers and confirmed to be caused by RCS leakage from a primary system warrant an Alert classification.

A primary system is defined to be the pipes, valves, and other equipment which connect directly to the RPV such that a reduction in RPV pressure will effect a decrease in the steam or water being discharged through an unisolated break in the system.In general, multiple indications should be used to determine if a primary system is discharging outside Primary Containment.

For example, a high area radiation condition does not necessarily indicate that a primary system is discharging into the Reactor Building since this may be caused by radiation shine from nearby steam lines or the movement of radioactive materials.

Conversely, a high area radiation condition in conjunction with other indications (e.g. room flooding, high area temperatures, reports of steam in the Reactor Building, an unexpected rise in Feedwater flowrate, or unexpected Main Turbine Control Valve closure) may indicate that a primary system is discharging into the Reactor Building.An UNISOLABLE leak which is indicated by Max Normal Operating values escalates to a Site Area Emergency when combined with Containment Barrier CT6 Loss Threshold#1 (after a containment isolation) and a General Emergency when the Fuel Clad Barrier criteria is also exceeded.Month 20XX DR 3-65 EP-AA-1004 (Revision XX)

Dresden Annex Fxplnn Nuclear RECOGNITION CATEGORY FISSION PRODUCT BARRIER DEGRADATION RC4 (cont)Basis Reference(s):

1. NEI 99-01 Rev 6, Table 9-F-2 2. M-12, M-345, Main steam piping 3. Technical Specifications 3.4.4 RCS Operational LEAKAGE 4. Technical Specifications Section 3.4.5, RCS Leakage Detection Instrumentation

5. DAN 902(3)-4 A-17 DRYWELL EQUIP SUMP LVL HI-HI 6. DAN 902(3)-4 H-18 DRYWELL FLOOR DRN SUMP LVL HI-HI 7. DOA 0040-01 SLOW LEAK 8. DOP 2000-24 DRYWELL SUMP OPERATION 9. DEOP 300-1, Secondary Containment Control 10. UFSAR Section 5.2.5 Month 20XX DR 3-66 EP-AA-1 004 (Revision XX)

Annp.xNuclear Dlresden Annex~ FYAlnn Nucler~I RECOGNITION CATEGORY FISSION PRODUCT BARRIER DEGRADATION RC5 Initiating Condition:

Primary Containment radiation Operating Mode Applicability:

1,2,3 Fission Product Barrier (FPB) Threshold:

LOSS 1. Drywell radiation monitor reading > 100 R/hr (>1.00 E+02 R/hr).Basis: The radiation monitor reading corresponds to an instantaneous release of all reactor coolant mass into the primary containment, assuming that reactor coolant activity equals Technical Specification allowable limits. This value is lower than that specified for Fuel Clad Barrier FC5 Loss Threshold since it indicates a loss of the RCS Barrier only.There is no RCS Potential Loss threshold associated with Primary Containment Radiation.

Basis Reference(s):

1. NEI 99-01 Rev 6, Table 9-F-2 2. EP-EAL-061 1, Criteria for Choosing Containment Radiation Monitor Reading Indicative of loss of the RCS Barrier.Month 20XX DR 3-67 EP-AA-1 004 (Revision XX)

Dresden Annex Exelon Nuclear RECOGNITION CATEGORY FISSION PRODUCT BARRIER DEGRADATION RC7 Initiating Condition:

Emergency Director Judgment.Operating Mode Applicability:

1,2,3 Fission Product Barrier (FPB) Threshold:

LOSS 1. Any condition in the opinion of the Emergency Barrier.POTENTIAL LOSS 2. Any condition in the opinion of the Emergency of the RCS Barrier.Basis: Loss Threshold

1. 1 Basis Director that indicates Loss of the RCS Director that indicates Potential Loss This threshold addresses any other factors that are to be used by the Emergency Director in determining whether the RCS Barrier is lost.Potential Loss Threshold

1. 2 Basis This threshold addresses any other factors that may be used by the Emergency Director in determining whether the RCS Barrier is potentially lost. The Emergency Director should also consider whether or not to declare the barrier potentially lost in the event that barrier status cannot be monitored.

Basis Reference(s):

1. NEI 99-01 Rev 6, Table 9-F-2 Month 20XX DR 3-68 EP-AA-1004 (Revision XX)

Dresden Annex Exelon Nuclear RECOGNITION CATEGORY FISSION PRODUCT BARRIER DEGRADATION CT2 Initiating Condition:

RPV Water Level Operating Mode Applicability:

1,2,3 Fission Product Barrier (FPB) Threshold:

POTENTIAL LOSS Plant conditions indicate Primary Containment flooding is required.Basis: The Potential Loss threshold is identical to the Fuel Clad Barrier RC2 Loss threshold RPV Water Level. The Potential Loss requirement for Primary Containment Flooding indicates adequate core cooling cannot be restored and maintained and that core damage is possible.

BWR EPGs/SAMGs specify the conditions that require primary containment flooding.

When primary containment flooding is required, the EPGs are exited and SAMGs are entered. Entry into SAMGs is a logical escalation in response to the inability to restore and maintain adequate core cooling.PRA studies indicate that the condition of this Potential Loss threshold could be a core melt sequence which, if not corrected, could lead to RPV failure and increased potential for primary containment failure. In conjunction with the RPV water level Loss thresholds in the Fuel Clad and RCS barrier columns, this threshold results in the declaration of a General Emergency.

There is no Loss Threshold associated with this IC.Basis Reference(s):

1. NEI 99-01 Rev 6, Table 9-F-2 2. Severe Accident Management Guidelines

3. DEOP 0100, RPV Control 4. DEOP 0400-01, RPV Flooding 5. DEOP 0400-05, Failure to Scram Month 20XX DR 3-69 EP-AA-1004 (Revision XX)

Dresden Annex Exallon Nuclear RECOGNITION CATEGORY FISSION PRODUCT BARRIER DEGRADATION CT3 Initiating Condition:

Primary Containment Conditions Operating Mode Applicability:

1,2,3 Fission Product Barrier (FPB) Threshold:

LOSS 1. UNPLANNED rapid drop in Drywell pressure following Drywell pressure rise.OR 2. Drywell pressure response not consistent with LOCA conditions.

POTENTIAL LOSS 3. Drywell pressure > 62 psig and rising.OR 4. a. Drywell or torus hydrogen concentration

> 6%.AND b. Drywell or torus oxygen concentration

> 5%.OR 5. Heat Capacity Limit (DEOP 200-1, Fig.M) exceeded.Basis: UNPLANNED:

A parameter change or an event that is not 1) the result of an intended evolution or 2) an expected plant response to a transient.

The cause of the parameter change or event may be known or unknown.Loss Threshold

1. 1 and #2 Basis Rapid UNPLANNED loss of primary containment pressure (i.e., not attributable to Drywell spray or condensation effects) following an initial pressure rise indicates a loss of primary containment integrity.

Primary containment pressure should rise as a result of mass and energy release into the primary containment from a LOCA. Thus, primary containment pressure not increasing under these conditions indicates a loss of primary containment integrity.

These thresholds rely on operator recognition of an unexpected response for the condition and therefore a specific value is not assigned.

The unexpected (UNPLANNED) response is important because it is the indicator for a containment bypass condition.

A pressure suppression bypass path would not be an indication of a containment breach.Month 20XX DR 3:70 EP-AA-1004 (Revision XX)

Dresden Annex Exelon Nuclear RECOGNITION CATEGORY FISSION PRODUCT BARRIER DEGRADATION CT3 (cont)Basis (cont): Potential Loss Threshold

1. 3 Basis The threshold pressure is the primary containment internal design pressure.

Structural acceptance testing demonstrates the capability of the primary containment to resist pressures greater than the internal design pressure.

A pressure of this magnitude is greater than those expected to result from any design basis accident and, thus, represent a Potential Loss of the Containment barrier.Potential Loss Threshold

1. 4 Basis If hydrogen concentration reaches or exceeds the lower flammability limit, as defined in plant EOPs, in an oxygen rich environment, a potentially explosive mixture exists. If the combustible mixture ignites inside the primary containment, loss of the Containment barrier could occur.Potential Loss Threshold

1. 5 Basis The HCTL is a function of RPV pressure, Torus temperature and Torus water level. It is utilized to preclude failure of the containment and equipment in the containment necessary for the safe shutdown of the plant and therefore, the inability to maintain plant parameters below the limit constitutes a potential loss of containment.

Basis Reference(s):

1. NEI 99-01 Rev 6, Table 9-F-2 2. UFSAR 6.2.1.3.2.1

3. UFSAR Table 6.2-3 4. UFSAR 15.6.5 5. UFSAR 6.2.1.1 6. DEOP 200-1 Primary Containment Control 7. DEOP 200-2 Hydrogen Control Month 20XX DR 3-71 EP-AA-1004 (Revision XX)

Dresden Annex Exelon Nuclaar RECOGNITION CATEGORY FISSION PRODUCT BARRIER DEGRADATION CT5 Initiating Condition:

Primary Containment Radiation Operating Mode Applicability:

1,2,3 Fission Product Barrier (FPB) Threshold:

POTENTIAL LOSS 1. Drywell radiation monitor reading > 1.60 E+03 R/hr (1600 R/hr).Basis: There is no Loss threshold associated with Primary Containment Radiation.

The radiation monitor reading corresponds to an instantaneous release of all reactor coolant mass into the primary containment, assuming that 20% of the fuel cladding has failed. This level of fuel clad failure is well above that used to determine the analogous Fuel Clad Barrier Loss and RCS Barrier Loss thresholds.

NUREG-1 228, Source Estimations During Incident Response to Severe Nuclear Power Plant Accidents, indicates the fuel clad failure must be greater than approximately 20%in order for there to be a major release of radioactivity requiring offsite protective actions. For this condition to exist there must already have been a loss of the RCS Barrier and the Fuel Clad Barrier. It is therefore prudent to treat this condition as a potential loss of containment which would then escalate the emergency classification level to a General Emergency.

Basis Reference(s):

1. NEI 99-01 Rev 6, Table 9-F-2 2. Core Damage Assessment Methodology (CDAM)Month 20XX DR 3-72 EP-AA-1004 (Revision XX)

Dresden Annex Exelon Nuclear RECOGNITION CATEGORY FISSION PRODUCT BARRIER DEGRADATION CT6 Initiating Condition:

Primary Containment Isolation Failure Operating Mode Applicability:

1,2,3 Fission Product Barrier (FPB) Threshold:

LOSS 1. UNISOLABLE direct downstream pathway to the environment exists after primary containment isolation signal.OR 2. Intentional Primary Containment venting/purging per EOPs or SAMGs due to accident conditions.

OR 3. UNISOLABLE primary system leakage that results in EITHER of the following:

a. Secondary Containment area temperature

> DEOP 300-1, Maximum Safe operating levels.OR b. Secondary Containment area radiation level > DEOP 300-1, Maximum Safe operating levels.Basis: UNISOLABLE:

An open or breached system line that cannot be isolated, remotely or locally.These thresholds address incomplete containment isolation that allows an UNISOLABLE direct release to the environment.

Loss Threshold

1. 1 Basis The use of the modifier "direct" in defining the release path discriminates against release paths through interfacing liquid systems or minor release pathways, such as instrument lines, not protected by the Primary Containment Isolation System (PCIS).Leakage into a closed system is to be considered only if the closed system is breached and thereby creates a significant pathway to the environment.

Examples include unisolable Main Steamline, HPCI steamline breaks, unisolable RWCU system breaks, and unisolable containment atmosphere vent paths.Examples of "downstream pathway to the environment" could be through the Turbine/Condenser, or direct release to the Turbine or Reactor Building.Month 20XX DR 3-73 EP-AA-1004 (Revision XX)

Dresden Annex Exelon Nuclear RECOGNITION CATEGORY FISSION PRODUCT BARRIER DEGRADATION CT6 (cont)Basis (cont): The existence of a filter is not considered in the threshold assessment.

Filters do not remove fission product noble gases. In addition, a filter could become ineffective due to iodine and/or particulate loading beyond design limits (i.e., retention ability has been exceeded) or water saturation from steam/high humidity in the release stream.Following the leakage of RCS mass into primary containment and a rise in primary containment pressure, there may be minor radiological releases associated with allowable primary containment leakage through various penetrations or system components.

Minor releases may also occur if a primary containment isolation valve(s)fails to close but the primary containment atmosphere escapes to an enclosed system.These releases do not constitute a loss or potential loss of primary containment but should be evaluated using the Recognition Category R ICs.Loss Threshold

1. 2 Basis EOPs may direct primary containment isolation valve logic(s) to be intentionally bypassed, even if offsite radioactivity release rate limits will be exceeded.

Under these conditions with a valid primary containment isolation signal, the containment should also be considered lost if primary containment venting is actually performed.

Intentional venting of primary containment for primary containment pressure or combustible gas control to the secondary containment and/or the environment is a Loss of the Containment.

Venting for primary containment pressure control when not in an accident situation (e.g., to control pressure below the Drywell high pressure scram setpoint) does not meet the threshold condition.

Loss Threshold

1. 3 Basis The Max Safe Operating Temperature and the Max Safe Operating Radiation Level are each the highest value of these parameters at which neither: (1) equipment necessary for the safe shutdown of the plant will fail, nor (2) personnel access necessary for the safe shutdown of the plant will be precluded.

EOPs utilize these temperatures and radiation levels to establish conditions under which RPV depressurization is required.The temperatures and radiation levels should be confirmed to be caused by RCS leakage from a primary system. A primary system is defined to be the pipes, valves, and other equipment which connect directly to the RPV such that a reduction in RPV pressure will effect a decrease in the steam or water being discharged through an unisolated break in the system.Month 20XX DR 3-74 EP-AA-1004 (Revision XX)

I=xelnn flreQrIn Annex FvAlnn NmuclIanr RECOGNITION CATEGORY FISSION PRODUCT BARRIER DEGRADATION CT6 (cont)Basis (cont): In general, multiple indications should be used to determine if a primary system is discharging outside Primary Containment.

For example, a high area radiation condition does not necessarily indicate that a primary system is discharging into the Reactor Building since this may be caused by radiation shine from nearby steam lines or the movement of radioactive materials.

Conversely, a high area radiation condition in conjunction with other indications (e.g. room flooding, high area temperatures, reports of steam in the Reactor Building, an unexpected rise in Feedwater flowrate, or unexpected Main Turbine Control Valve closure) may indicate that a primary system is discharging into the Reactor Building.In combination with RCS Barrier RC4 Potential Loss Threshold

1. 3 this threshold would result in a Site Area Emergency.

There is no Potential Loss threshold associated with Primary Containment Isolation Failure.Basis Reference(s):

1. NEI 99-01 Rev 6, Table 9-F-2 2. DEOP 200-1 Primary Containment Control 3. DEOP 200-2 Hydrogen Control 4. DEOP 500-4 Containment Venting 5. DEOP 300-1 Secondary Containment Control Month 20XX DR 3-75 EP-AA-1004 (Revision XX)

Dresden Annex Exelon Nuclear RECOGNITION CATEGORY FISSION PRODUCT BARRIER DEGRADATION CT7 Initiating Condition:

Emergency Director Judgment.Operating Mode Applicability:

1,2,3 Fission Product Barrier (FPB) Threshold:

LOSS 1. Any condition in the opinion of the Emergency Containment Barrier.POTENTIAL LOSS 2. Any condition in the opinion of the Emergency of the Containment Barrier.Basis: Loss Threshold

1. 1 Basis: Director that indicates Loss of the Director that indicates Potential Loss This threshold addresses any other factors that are to be used by the Emergency Director in determining whether the Containment Barrier is lost.Potential Loss Threshold

1. 2 Basis: This threshold addresses any other factors that may be used by the Emergency Director in determining whether the Containment Barrier is potentially lost. The Emergency Director should also consider whether or not to declare the barrier potentially lost in the event that barrier status cannot be monitored.

Basis Reference(s):

1. NEI 99-01 Rev 6, Table 9-F-2 Month 20XX DR 3-76 EP-AA-1004 (Revision XX)

Dresden Annex Exelon Nuclear RECOGNITION CATEGORY SYSTEM MALFUNCTIONS MG1 Initiating Condition:

Prolonged loss of all Off-site and all On-Site AC power to emergency buses.Operating Mode Applicability:

1,2,3 Emergency Action Level (EAL): Note:* The Emergency Director should declare the event promptly upon determining that the applicable time has been exceeded, or will likely be exceeded.1 Loss of ALL offsite AC power to unit ECCS buses.AND 2. Failure of DG 2(3), shared DG 2/3 and SBO DG 2(3) emergency diesel generators to supply power to unit ECCS buses.AND 3. EITHER of the following:

a. Restoration of at least one unit ECCS bus in < 4 hours4.62963e-5 days <br />0.00111 hours <br />6.613757e-6 weeks <br />1.522e-6 months <br /> is not likely.OR b. RPV water level cannot be restored and maintained

> -164 inches.Basis: SAFETY SYSTEM: A system required for safe plant operation, cooling down the plant and/or placing it in the cold shutdown condition, including the ECCS. These are typically systems classified as safety-related.

This IC addresses a prolonged loss of all power sources to AC emergency buses. A loss of all AC power compromises the performance of all SAFETY SYSTEMS requiring electric power including those necessary for emergency core cooling, containment heat removal/pressure control, spent fuel heat removal and the ultimate heat sink. A prolonged loss of these buses will lead to a loss of any fission product barriers.

In addition, fission product barrier monitoring capabilities may be degraded under these conditions.

RPV values are actual levels, not indicated levels. Therefore, they may need level compensation depending on conditions.

The EAL should require declaration of a General Emergency prior to meeting the thresholds for IC FG1. This will allow additional time for implementation of offsite protective actions.Month 20XX DR 3-77 EP-AA-1004 (Revision XX)

Dresden Annex Exelon Nuclear RECOGNITION CATEGORY SYSTEM MALFUNCTIONS MG1 (cont)Basis (cont): Escalation of the emergency classification from Site Area Emergency will occur if it is projected that power cannot be restored to at least one AC emergency bus by the end of the analyzed station blackout coping period. Beyond this time, plant responses and event trajectory are subject to greater uncertainty, and there is an increased likelihood of challenges to multiple fission product barriers.The estimate for restoring at least one emergency bus should be based on a realistic appraisal of the situation.

Mitigation actions with a low probability of success should not be used as a basis for delaying a classification upgrade. The goal is to maximize the time available to prepare for, and implement, protective actions for the public.The EAL will also require a General Emergency declaration if the loss of AC power results in parameters that indicate an inability to adequately remove decay heat from the core.Basis Reference(s):

1. NEI 99-01 Rev 6, SG1 2. UFSAR 8.3 3. 12E-2302A, Station Key Diagram 4160V and 480V Switchgears Part 1 4. DOA-6400-01, 138-kV System and 345-kV Alternate Supply Failure 5. DOA 6500-01 4-KV Bus Failure 6. UFSAR Fig. 9.5-14 Single-Line Electrical Diagram of Station Blackout Generator Ties to Plant Auxiliary Electric System 7. UFSAR 9.5.9 8. DOP 6620-05, Powering Unit 2(3) 4-KV Busses via the SBO D/G 2(3)9. DGA-12 Partial or Complete Loss of AC Power 10. DEOP100 RPV Control 11. DEOP 0010-00 Guidelines for Use of Dresden Emergency Operating Procedures and Severe Accident Management Guidelines Month 20XX DR 3-78 EP-AA-1004 (Revision XX)

Dresden Annaw Exelon Nuclear Dresde AnnexExelon NuclIear RECOGNITION CATEGORY SYSTEM MALFUNCTIONS MS1 Initiating Condition:

Loss of all offsite and all onsite AC power to emergency buses for 15 minutes or longer.Operating Mode Applicability:

1,2,3 Emergency Action Level (EAL): Note: e The Emergency Director should declare the event promptly upon determining that the applicable time has been exceeded, or will likely be exceeded.1. Loss of ALL offsite AC Power to unit ECCS buses.AND 2. Failure of DG 2(3), shared DG 2/3 and SBO DG 2(3) emergency diesel generators to supply power to unit ECCS buses.AND 3. Failure to restore power to at least one ECCS bus in < 15 minutes from the time of loss of both offsite and onsite AC power.Basis: SAFETY SYSTEM: A system required for safe plant operation, cooling down the plant and/or placing it in the cold shutdown condition, including the ECCS. These are typically systems classified as safety-related.

This IC addresses a total loss of AC power that compromises the performance of all SAFETY SYSTEMS requiring electric power including those necessary for emergency core cooling, containment heat removal/pressure control, spent fuel heat removal and the ultimate heat sink. In addition, fission product barrier monitoring capabilities may be degraded under these conditions.

This IC represents a condition that involves actual or likely major failures of plant functions needed for the protection of the public.Fifteen minutes was selected as a threshold to exclude transient or momentary power losses.Escalation of the emergency classification level would be via ICs RG1, FG1, MG1, or MG2.Month 20XX DR 3-79 EP-AA-1004 (Revision XX)

Dresden AnnexN r Dresden Annex Exellon Nuclear RECOGNITION CATEGORY SYSTEM MALFUNCTIONS MS1 (cont)Basis Reference(s):

1. NEI 99-01 Rev 6, SS1 2. UFSAR 8.3 3. 12E-2302A, Station Key Diagram 4160V and 480V Switchgears Part 1 4. DOA-6400-01, 138-kV System and 345-kV Alternate Supply Failure 5. DOA 6500-01 4KV Bus Failure 6. UFSAR Fig. 9.5-14 Single-Line Electrical Diagram of Station Blackout Generator Ties to Plant Auxiliary Electric System 7. UFSAR 9.5.9 8. DOP 6620-05, Powering Unit 2(3) 4KV Busses via the SBO D/G 2(3)9. DGA-12 Partial or Complete Loss of AC Power Month 20XX DR 3-80 EP-AA-1 004 (Revision XX)

Dresden Annex Dlresden Annex Fvalnn Nucler~I RECOGNITION CATEGORY SYSTEM MALFUNCTIONS MA1 Initiating Condition:

Loss of all but one AC power source to emergency buses for 15 minutes or longer.Operating Mode Applicability:

1,2,3 Emergency Action Level (EAL): Note:* The Emergency Director should declare the event promptly upon determining that the applicable time has been exceeded, or will likely be exceeded.1. AC power capability to unit ECCS buses reduced to only one of the following power sources for > 15 minutes.* Reserve auxiliary Transformer TR-22 (TR-32)* Unit auxiliary transformer TR-21 (TR-31)* Unit Emergency Diesel Generator DG 2(3)* Shared Emergency Diesel Generator DG 2/3* Station Blackout Diesel Generator DG 2(3)* Unit crosstie breakers AND 2. ANY additional single power source failure will result in a loss of ALL AC power to SAFETY SYSTEMS.Basis: SAFETY SYSTEM: A system required for safe plant operation, cooling down the plant and/or placing it in the cold shutdown condition, including the ECCS. These are typically systems classified as safety-related.

This IC describes a significant degradation of offsite and onsite AC power sources such that any additional single failure would result in a loss of all AC power to SAFETY SYSTEMS. In this condition, the sole AC power source may be powering one, or more than one, train of safety-related equipment.

This IC provides an escalation path from IC MUl.An "AC power source" is a source recognized in AOPs and EOPs, and capable of supplying required power to an emergency bus. Some examples of this condition are presented below.* A loss of all offsite power with a concurrent failure of all but one emergency power source (e.g., an onsite diesel generator).

Month 20XX DR 3-81 EP-AA-1004 (Revision XX)

Dresden Annex Exelon Nuclear RECOGNITION CATEGORY SYSTEM MALFUNCTIONS MA1 (cont)Basis (cont): " A loss of all offsite power and loss of all emergency power sources (e.g., onsite diesel generators) with a single train of emergency buses being fed from the unit main generator." A loss of emergency power sources (e.g., onsite diesel generators) with a single train of emergency buses being fed from an offsite power source.Fifteen minutes was selected as a threshold to exclude transient or momentary losses of power.Escalation of the emergency classification level would be via IC MS1.Basis Reference(s):

1. NEI 99-01 Rev 6, SA1 2. UFSAR 8.3 3. 12E-2302A, Station Key Diagram 4160V and 480V Switchgears Part 1 4. DOA-6400-01, 138 KV System and 345 KV Alternate Supply Failure 5. DOA 6500-01 4KV Bus Failure 6. UFSAR Fig. 9.5-14 Single-Line Electrical Diagram of Station Blackout Generator Ties to Plant Auxiliary Electric System 7. UFSAR 9.5.9 Station Blackout System 8. DOP 6620-05, Powering Unit 2(3) 4KV Busses via the SBO D/G 2(3)9. DGA-12 Partial or Complete Loss of AC Power Month 20XX DR 3-82 EP-AA-1004 (Revision XX) rlr,-erl--n Annov Klmmlnnrlr flra~rI~n A nnav I t~v~ LI. I l~ r RECOGNITION CATEGORY SYSTEM MALFUNCTIONS MU1 Initiating Condition:

Loss of all offsite AC power capability to emergency buses for 15 minutes or longer.Operating Mode Applicability:

1,2,3 Emergency Action Level (EAL): Note:* The Emergency Director should declare the event promptly upon determining that the applicable time has been exceeded, or will likely be exceeded.Loss of ALL offsite AC power capability to unit ECCS buses for > 15 minutes.Basis: This IC addresses a prolonged loss of offsite power. The loss of offsite power sources renders the plant more vulnerable to a complete loss of power to AC emergency buses.This condition represents a potential reduction in the level of safety of the plant.For emergency classification purposes, "capability" means that an offsite AC power source(s) is available to the emergency buses, whether or not the buses are powered from it. (e.g. unit cross-tie breakers)Fifteen minutes was selected as a threshold to exclude transient or momentary losses of offsite power.Escalation of the emergency classification level would be via IC MAI.Basis Reference(s):

1. NEI 99-01 Rev 6, SU1 2. UFSAR 8.3 3. 12E-2302A, Station Key Diagram 4160V and 480V Switchgears Part 1 4. DOA-6400-01, 138 kV System and 345 kV Alternate Supply Failure 5. DOA 6500-01 4kV Bus Failure 6. UFSAR Fig. 9.5-14 Single-Line Electrical Diagram of Station Blackout Generator Ties to Plant Auxiliary Electric System 7. UFSAR 9.5.9 8. DOP 6620-05, Powering Unit 2(3) 4kV Busses via the SBO D/G 2(3)9. DGA-12 Partial or Complete Loss of AC Power Month 20XX DR 3-83 EP-AA-1004 (Revision XX)

Dresden Annex Exelon Nuclear RECOGNITION CATEGORY SYSTEM MALFUNCTIONS MG2 Initiating Condition:

Loss of all AC and Vital DC power sources for 15 minutes or longer.Operating Mode Applicability:

1,2,3 Emergency Action Level (EAL): Note: The Emergency Director should declare the event promptly upon determining that the applicable time has been exceeded, or will likely be exceeded.1. Loss of ALL offsite AC power to unit ECCS buses.AND 2. Failure of DG 2(3), shared DG 2/3 and SBO DG 2(3) emergency diesel generators to supply power to vital buses.AND 3. Voltage is < 105 VDC on 125 VDC battery buses #2 and #3.AND 4. ALL AC and Vital DC power sources have been lost for > 15 minutes.Basis: SAFETY SYSTEM: A system required for safe plant operation, cooling down the plant and/or placing it in the cold shutdown condition, including the ECCS. These are typically systems classified as safety-related.

This IC addresses a concurrent and prolonged loss of both AC and Vital DC power. A loss of all AC power compromises the performance of all SAFETY SYSTEMS requiring electric power including those necessary for emergency core cooling, containment heat removal/pressure control, spent fuel heat removal and the ultimate heat sink. A loss of Vital DC power compromises the ability to monitor and control SAFETY SYSTEMS. A sustained loss of both AC and DC power will lead to multiple challenges to fission product barriers.Fifteen minutes was selected as a threshold to exclude transient or momentary power losses. The 15-minute emergency declaration clock begins at the point when all EAL conditions are met.Month 20XX DR 3-84 EP-AA-1004 (Revision XX)

Dresden Annex Exelon Nuclear RECOGNITION CATEGORY SYSTEM MALFUNCTIONS MG2 (cont)Basis Reference(s):

1. NEI 99-01 Rev 6, SG8 2. UFSAR 8.3 3. 12E-2302A, Station Key Diagram 4160V and 480V Switchgears Part 1 4. DOA-6400-01, 138-kV System and 345-kV Alternate Supply Failure 5. DOA 6500-01 4KV Bus Failure 6. UFSAR Fig. 9.5-14 Single-Line Electrical Diagram of Station Blackout Generator Ties to Plant Auxiliary Electric System 7. UFSAR 9.5.9 8. DOP 6620-05, Powering Unit 2(3) 4KV Busses via the SBO D/G 2(3)9. DGA-12 Partial or Complete Loss of AC Power 10. UFSAR 8.3.2 11. DOA 6900-02(3)

Failure of Unit 2(3) 125 VDC Power Supply 12. Technical Specification B.3.8.4, DC Power Sources -Operating Month 20XX DR 3-85 EP-AA-1004 (Revision XX)

Annoy Dresden Annex Pvalnn Kiiii-bor RECOGNITION CATEGORY SYSTEM MALFUNCTIONS MS2 Initiating Condition:

Loss of all vital DC power for 15 minutes or longer.Operating Mode Applicability:

1,2,3 Emergency Action Level (EAL): Note:* The Emergency Director should declare the event promptly upon determining that the applicable time has been exceeded, or will likely be exceeded.Voltage is < 105 VDC on 125 VDC battery buses #2 and #3 for > 15 minutes.Basis: SAFETY SYSTEM: A system required for safe plant operation, cooling down the plant and/or placing it in the cold shutdown condition, including the ECCS. These are typically systems classified as safety-related.

This IC addresses a loss of Vital DC power which compromises the ability to monitor and control SAFETY SYSTEMS. In modes above Cold Shutdown, this condition involves a major failure of plant functions needed for the protection of the public.Fifteen minutes was selected as a threshold to exclude transient or momentary power losses.Escalation of the emergency classification level would be via ICs RG1, FG1 or MG2.Basis Reference(s):

1. NEI 99-01 Rev 6, SS8 2. UFSAR 8.3.2 3. DOA 6900-02(3)

Failure of Unit 2(3) 125 VDC Power Supply 4. Technical Specification B.3.8.4, DC Power Sources -Operating Month 20XX DR 3-86 EP-AA-1004 (Revision XX)

Annoy Dlresden Annex Fvplnn N"H~Ianr RECOGNITION CATEGORY SYSTEM MALFUNCTIONS MS3 Initiating Condition:

Inability to shutdown the reactor causing a challenge to core cooling or RCS heat removal.Operating Mode Applicability:

1,2 Emergency Action Level (EAL): 1. Automatic scram did not shutdown the reactor as indicated by Reactor Power > 6%.AND 2, ALL manual / ARI actions to shutdown the reactor have been unsuccessful as indicated by Reactor Power > 6%.AND 3. EITHER of the following conditions exist:* RPV water level cannot be restored and maintained

> -164 inches OR* Heat Capacity Limit (DEOP 200-1, Fig. M) exceeded.Basis: This IC addresses a failure of the RPS to initiate or complete an automatic or manual reactor scram that results in a reactor shutdown, all subsequent operator manual actions, both inside and outside the Control Room including driving in control rods and boron injection, are unsuccessful, and continued power generation is challenging the capability to adequately remove heat from the core and/or the RCS. This condition will lead to fuel damage if additional mitigation actions are unsuccessful and thus warrants the declaration of a Site Area Emergency.

In some instances, the emergency classification resulting from this IC/EAL may be higher than that resulting from an assessment of the plant responses and symptoms against the Recognition Category F ICs/EALs.

This is appropriate in that the Recognition Category F ICs/EALs do not address the additional threat posed by a failure to shutdown the reactor. The inclusion of this IC and EAL ensures the timely declaration of a Site Area Emergency in response to prolonged failure to shutdown the reactor.A reactor shutdown is determined in accordance with applicable Emergency Operating Procedure criteria.RPV values are actual levels, not indicated levels. Therefore, they may need level compensation depending on conditions.

Escalation of the emergency classification level would be via IC RG1 or FG1.Month 20XX DR 3-87 EP-AA-1004 (Revision XX)

Dresden Annex Exelon Nuclear RECOGNITION CATEGORY SYSTEM MALFUNCTIONS MS3 (cont)Basis Reference(s):

1. NEI 99-01 Rev 6, SS5 2. DEOP 100 RPV Control 3. DEOP 400-5 Failure to Scram 4. DEOP 200-1 Primary Containment Control 5. Technical Support Guidelines Month 20XX DR 3-88 EP-AA-1004 (Revision XX)

Dresden Annex Dresden Annex Exelnn Nule a~r RECOGNITION CATEGORY SYSTEM MALFUNCTIONS MA3 Initiating Condition:

Automatic or manual scram fails to shutdown the reactor, and subsequent manual actions taken at the reactor control consoles are not successful in shutting down the reactor.Operating Mode Applicability:

1,2 Emergency Action Level (EAL): Note:* A manual action is any operator action, or set of actions, which causes the control rods to be rapidly inserted into the core, and does not include manually driving in control rods or implementation of boron injection strategies.

1. Automatic or manual scram did not shutdown the reactor as indicated by Reactor Power > 6%.AND 2. Manual / ARI actions taken at the reactor control consoles are not successful in shutting down the reactor as indicated by Reactor Power > 6%.Basis: This IC addresses a failure of the RPS to initiate or complete an automatic or manual reactor scram that results in a reactor shutdown, and subsequent operator manual actions taken at the reactor control consoles to shutdown the reactor are also unsuccessful.

This condition represents an actual or potential substantial degradation of the level of safety of the plant. An emergency declaration is required even if the reactor is subsequently shutdown by an action taken away from the reactor control consoles since this event entails a significant failure of the RPS.A manual action at the reactor control consoles is any operator action, or set of actions, which causes the control rods to be rapidly inserted into the core (e.g., initiating a manual reactor scram. This action does not include manually driving in control rods or implementation of boron injection strategies.

If this action(s) is unsuccessful, operators would immediately pursue additional manual actions at locations away from the reactor control consoles (e.g., locally opening breakers).

Actions taken at back-panels or other locations within the Control Room, or any location outside the Control Room, are not considered to be "at the reactor consoles".

Taking the Reactor Mode Switch to Shutdown is considered to be a manual scram action.Month 20XX DR 3-89 EP-AA-1 004 (Revision XX)

Dresden Annex Exelon Nuclear Dresden Annex Exellon Nuclear RECOGNITION CATEGORY SYSTEM MALFUNCTIONS MA3 (cont)Basis (cont): The plant response to the failure of an automatic or manual reactor scram will vary based upon several factors including the reactor power level prior to the event, availability of the condenser, performance of mitigation equipment and actions, other concurrent plant conditions, etc. If the failure to shutdown the reactor is prolonged enough to cause a challenge to the RPV water level or RCS heat removal safety functions, the emergency classification level will escalate to a Site Area Emergency via IC MS3. Depending upon plant responses and symptoms, escalation is also possible via IC FS1. Absent the plant conditions needed to meet either IC MS3 or FS1, an Alert declaration is appropriate for this event.It is recognized that plant responses or symptoms may also require an Alert declaration in accordance with the Recognition Category F ICs; however, this IC and EAL are included to ensure a timely emergency declaration.

A reactor shutdown is determined in accordance with applicable Emergency Operating Procedure criteria.Basis Reference(s):

1. NEI 99-01 Rev 6, SA5 2. DEOP 100 RPV Control 3. DEOP 400-5 Failure to Scram 4. DEOP 200-1 Primary Containment Control Month 20XX DR 3-90 EP-AA-1004 (Revision XX) nrgmrtn Anngny C-re%10%n K111AAMnr flr~av4~m, A mi ii~v I ~i Ma us r a ~

• s-s. ...~a ~ -I I I~ -~ I RECOGNITION CATEGORY SYSTEM MALFUNCTIONS MU3 Initiating Condition:

Automatic or manual scram fails to shutdown the reactor.Operating Mode Applicability:

1,2 Emergency Action Level (EAL): Note:* A manual action is any operator action, or set of actions, which causes the control rods to be rapidly inserted into the core, and does not include manually driving in control rods or implementation of boron injection strategies.

1. a. Automatic scram did not shutdown the reactor as indicated by Reactor Power> 6%.AND b. Subsequent manual / ARI action taken at the reactor control consoles is successful in shutting down the reactor.OR 2. a. Manual scram did not shutdown the reactor as indicated by Reactor Power> 6%.AND b. EITHER of the following:

1. Subsequent manual / ARI action taken at the reactor control consoles is successful in shutting down the reactor.OR 2. Subsequent automatic scram / ARI is successful in shutting down the reactor.Basis: This IC addresses a failure of the RPS to initiate or complete an automatic or manual reactor scram that results in a reactor shutdown, and either a subsequent operator manual action taken at the reactor control consoles or an automatic scram is successful in shutting down the reactor. This event is a precursor to a more significant condition and thus represents a potential degradation of the level of safety of the plant.Month 20XX DR 3-91 EP-AA-1004 (Revision XX)

Dresden Annex I::Yplnn Dresden Annex FYAlnn Nut-h-a~r RECOGNITION CATEGORY SYSTEM MALFUNCTIONS MU3 (cont)Basis (cont): EAL #1 Basis Following the failure on an automatic reactor scram, operators will promptly initiate manual actions at the reactor control consoles to shutdown the reactor (e.g., initiate a manual reactor scram). If these manual actions are successful in shutting down the reactor, core heat generation will quickly fall to a level within the capabilities of the plant's decay heat removal systems.EAL #2 Basis If an initial manual reactor trip is unsuccessful, operators will promptly take manual action at another location(s) on the reactor control consoles to shutdown the reactor (e.g., initiate a manual reactor scram / ARI using a different switch). Depending upon several factors, the initial or subsequent effort to manually scram the reactor, or a concurrent plant condition, may lead to the generation of an automatic reactor scram signal. If a subsequent manual or automatic scram / ARI is successful in shutting down the reactor, core heat generation will quickly fall to a level within the capabilities of the plant's decay heat removal systems.A manual action at the reactor control consoles is any operator action, or set of actions, which causes the control rods to be rapidly inserted into the core (e.g., initiating a manual reactor scram). This action does not include manually driving in control rods or implementation of boron injection strategies.

Actions taken at back-panels or other locations within the Control Room, or any location outside the Control Room, are not considered to be "at the reactor consoles".

Taking the Reactor Mode Switch to Shutdown is considered to be a manual scram action.The plant response to the failure of an automatic or manual reactor scram will vary based upon several factors including the reactor power level prior to the event, availability of the condenser, performance of mitigation equipment and actions, other concurrent plant conditions, etc. If subsequent operator manual actions taken at the reactor control consoles are also unsuccessful in shutting down the reactor, then the emergency classification level will escalate to an Alert via IC MA3. Depending upon the plant response, escalation is also possible via IC FAI. Absent the plant conditions needed to meet either IC MA3 or FAI, an Unusual Event declaration is appropriate for this event.A reactor shutdown is determined in accordance with applicable Emergency Operating Procedure criteria.Month 20XX DR 3-92 EP-AA-1004 (Revision XX)

Dresden AnnexN Dresden Annex Fvalnn NucleIazr RECOGNITION CATEGORY SYSTEM MALFUNCTIONS MU3 (cont)Basis (cont): Should a reactor scram signal be generated as a result of plant work (e.g., RPS setpoint testing), the following classification guidance should be applied." If the signal generated as a result of plant work causes a plant transient that creates a real condition that should have included an automatic reactor scram and the RPS fails to automatically shutdown the reactor, then this IC and the EALs are applicable, and should be evaluated." If the signal generated as a result of plant work does not cause a plant transient but should have generated an RPS scram signal and the scram failure is determined through other means (e.g., assessment of test results), then this IC and the EALs are not applicable and no classification is warranted.

Basis Reference(s):

1. NEI 99-01 Rev 6, SU5 2. Technical Specifications Table 3.3.1.1-1 3. DEOP 100 RPV Control 4. DEOP 400-5 Failure to Scram Month 20XX DR 3-93 EP-AA-1004 (Revision XX) rnnri=rl-" A snn--

r fl rnal~vi A~ui~vFvainn NucleIa2r RECOGNITION CATEGORY SYSTEM MALFUNCTIONS MA4 Initiating Condition:

UNPLANNED loss of Control Room indications for 15 minutes or longer with a significant transient in progress.Operating Mode Applicability:

1,2,3 Emergency Action Level (EAL): Note:* The Emergency Director should declare the event promptly upon determining that the applicable time has been exceeded, or will likely be exceeded.1. UNPLANNED event results in the inability to monitor ANY Table M1 parameter from within the Control Room for > 15 minutes.Table M1 Control Room Parameters

• Reactor Power" RPV Water Level" RPV Pressure* Primary Containment Pressure* Torus Level* Torus Temperature AND 2. ANY Table M2 transient in progress.Table M2 Significant Transients

• Turbine Trip" Reactor Scram* ECCS Activation" Recirc. Runback > 25% Reactor Power Change* Thermal Power oscillations

> 10% Reactor Power Change Month 20XX DR 3-94 EP-AA-1004 (Revision XX)

Exelon Nuclear Dresden Annex Exelon NuclIear RECOGNITION CATEGORY SYSTEM MALFUNCTIONS MA4 (cont)Basis: UNPLANNED:

A parameter change or an event that is not 1) the result of an intended evolution or 2) an expected plant response to a transient.

The cause of the parameter change or event may be known or unknown.SAFETY SYSTEM: A system required for safe plant operation, cooling down the plant and/or placing it in the cold shutdown condition, including the ECCS. These are typically systems classified as safety-related.

This IC addresses the difficulty associated with monitoring rapidly changing plant conditions during a transient without the ability to obtain SAFETY SYSTEM parameters from within the Control Room. During this condition, the margin to a potential fission product barrier challenge is reduced. It thus represents a potential substantial degradation in the level of safety of the plant.As used in this EAL, an "inability to monitor" means that values for any of the listed parameters cannot be determined from within the Control Room. This situation would require a loss of all of the Control Room sources for the given parameter(s).

For example, the reactor power level cannot be determined from any analog, computer point, digital and recorder source within the Control Room.An event involving a loss of plant indications, annunciators and/or display systems is evaluated in accordance with 10 CFR 50.72 (and associated guidance in NUREG-1 022)to determine if an NRC event report is required.

The event would be reported if it significantly impaired the capability to perform emergency assessments.

In particular, emergency assessments necessary to implement abnormal operating procedures, emergency operating procedures, and emergency plan implementing procedures addressing emergency classification, accident assessment, or protective action decision-making.

This EAL is focused on a selected subset of plant parameters associated with the key safety functions of reactivity control, RPV water level and RCS heat removal. The loss of the ability to determine any of these parameters from within the Control Room is considered to be more significant than simply a reportable condition.

In addition, if all indication sources for any of the listed parameters are lost, then the ability to determine the values of other SAFETY SYSTEM parameters may be impacted as well. For example, if the value for RPV water level cannot be determined from the indications and recorders on a main control board, the SPDS or the plant computer, the availability of other parameter values may be compromised as well.Fifteen minutes was selected as a threshold to exclude transient or momentary losses of indication.

Escalation of the emergency classification level would be via ICs FS1 or IC RS1.Basis Reference(s):

1. NEI 99-01 Rev 6, SA2 Month 20XX DR 3-95 EP-AA-1004 (Revision XX)

AnnAy Dlreden Annex Fwalnn Nur~clar RECOGNITION CATEGORY SYSTEM MALFUNCTIONS MU4 Initiating Condition:

UNPLANNED loss of Control Room indications for 15 minutes or longer.Operating Mode Applicability:

1,2,3 Emergency Action Level (EAL): Note:* The Emergency Director should declare the event promptly upon determining that the applicable time has been exceeded, or will likely be exceeded.UNPLANNED event results in the inability to monitor ANY Table M1 parameter from within the Control Room for > 15 minutes.Table M1 Control Room Parameters

• Reactor Power" RPV Water Level* RPV Pressure" Primary Containment Pressure* Torus Level* Torus Temperature Basis: UNPLANNED:

A parameter change or an event that is not 1) the result of an intended evolution or 2) an expected plant response to a transient.

The cause of the parameter change or event may be known or unknown.SAFETY SYSTEM: A system required for safe plant operation, cooling down the plant and/or placing it in the cold shutdown condition, including the ECCS. These are typically systems classified as safety-related.

This IC addresses the difficulty associated with monitoring normal plant conditions without the ability to obtain SAFETY SYSTEM parameters from within the Control Room. This condition is a precursor to a more significant event and represents a potential degradation in the level of safety of the plant.Month 20XX DR 3-96 EP-AA-1 004 (Revision XX)

Dresden Annex Exelon Nuclear RECOGNITION CATEGORY SYSTEM MALFUNCTIONS MU4 (cont)Basis (cont): As used in this EAL, an "inability to monitor" means that values for any of the listed parameters cannot be determined from within the Control Room. This situation would require a loss of all of the Control Room sources for the given parameter(s).

For example, the reactor power level cannot be determined from any analog, digital and recorder source within the Control Room.An event involving a loss of plant indications, annunciators and/or display systems is evaluated in accordance with 10 CFR 50.72 (and associated guidance in NUREG-1 022)to determine if an NRC event report is required.

The event would be reported if it significantly impaired the capability to perform emergency assessments.

In particular, emergency assessments necessary to implement abnormal operating procedures, emergency operating procedures, and emergency plan implementing procedures addressing emergency classification, accident assessment, or protective action decision-making.

This EAL is focused on a selected subset of plant parameters associated with the key safety functions of reactivity control, core cooling and RCS heat removal. The loss of the ability to determine any of these parameters from within the Control Room is considered to be more significant than simply a reportable condition.

In addition, if all indication sources for any of the listed parameters are lost, then the ability to determine the values of other SAFETY SYSTEM parameters may be impacted as well. For example, if the value for reactor vessel level cannot be determined from the indications and recorders on a main control board, the SPDS or the plant computer, the availability of other parameter values may be compromised as well.Fifteen minutes was selected as a threshold to exclude transient or momentary losses of indication.

Escalation of the emergency classification level would be via IC MA4.Basis Reference(s):

1. NEI 99-01 Rev 6, SU2 Month 20XX DR 3-97 EP-AA-1004 (Revision XX)

Annex Fxelon Nuclear Dpresden Annex Exe..n.Nu.l.a.

RECOGNITION CATEGORY SYSTEM MALFUNCTIONS MA5 Initiating Condition:

Hazardous event affecting a SAFETY SYSTEM required for the current operating mode.Operating Mode Applicability:

1,2,3 Emergency Action Level (EAL): 1. The occurrence of ANY of the following hazardous events: " Seismic event (earthquake)" Internal or external flooding event* High winds or tornado strike* FIRE" EXPLOSION" Other events with similar hazard characteristics as determined by the Shift Manager AND 2. EITHER of the following:

a. Event damage has caused indications of degraded performance in at least one train of a SAFETY SYSTEM required by Technical Specification for the current operating mode.OR b. The event has caused VISIBLE DAMAGE to a SAFETY SYSTEM component or structure required by Technical Specification for the current operating mode.Basis: FIRE: Combustion characterized by heat and light. Sources of smoke such as slipping drive belts or overheated electrical equipment do not constitute FIRES. Observation of flame is preferred but is NOT required if large quantities of smoke and heat are observed.EXPLOSION:

A rapid, violent and catastrophic failure of a piece of equipment due to combustion, chemical reaction or overpressurization.

A release of steam (from high energy lines or components) or an electrical component failure (caused by short circuits, grounding, arcing, etc.) should not automatically be considered an explosion.

Such events may require a post-event inspection to determine if the attributes of an explosion are present.Month 20XX DR 3-98 EP-AA-1004 (Revision XX)

Dresden Annex Exelon Nuclear RECOGNITION CATEGORY SYSTEM MALFUNCTIONS MA5 (cont)Basis (cont): SAFETY SYSTEM: A system required for safe plant operation, cooling down the plant and/or placing it in the cold shutdown condition, including the ECCS. These are typically systems classified as safety-related.

VISIBLE DAMAGE: Damage to a component or structure that is readily observable without measurements, testing, or analysis.

The visual impact of the damage is sufficient to cause concern regarding the operability or reliability of the affected component or structure.

This IC addresses a hazardous event that causes damage to a SAFETY SYSTEM, or a structure containing SAFETY SYSTEM components, required for the current operating mode, "required", i.e. required to be operable by Technical Specifications for the current operating mode. This condition significantly reduces the margin to a loss or potential loss of a fission product barrier, and therefore represents an actual or potential substantial degradation of the level of safety of the plant. Manual or automatic electrical isolation of safety equipment due to flooding, in and of itself, does not constitute degraded performance and is classified under HU6.EAL #2.a Basis This EAL addresses damage to a SAFETY SYSTEM train that is required to be operable by Technical Specifications for the current operating mode, and is in operation since indications for it will be readily available.

The indications of degraded performance should be significant enough to cause concern regarding the operability or reliability of the SAFETY SYSTEM train.EAL #2.b Basis This EAL addresses damage to a SAFETY SYSTEM component that is required to be operable by Technical Specifications for the current operating mode, and is not in operation or readily apparent through indications alone, as well as damage to a structure containing SAFETY SYSTEM components.

Operators will make this determination based on the totality of available event and damage report information.

This is intended to be a brief assessment not requiring lengthy analysis or quantification of the damage.Escalation of the emergency classification level would be via IC FS1 or RS1.If the EAL conditions of MA5 are not met then assess the event via HU3, HU4, or HU6.Basis Reference(s):

1. NEI 99-01, Rev 6 SA9 Month 20XX DR 3-99 EP-AA-1004 (Revision XX)

Dresden Annex l:xelnn N r Dresden Annex Fxelnn NucleIar RECOGNITION CATEGORY SYSTEM MALFUNCTIONS MU6 Initiating Condition:

RCS leakage for 15 minutes or longer.Operating Mode Applicability:

1,2,3 Emergency Action Level (EAL): Note:* The Emergency Director should declare the event promptly upon determining that the applicable time has been exceeded, or will likely be exceeded.1. RCS unidentified or pressure boundary leakage in the Drywell > 10 gpm for> 15 minutes.OR 2. RCS identified leakage in the Drywell >25 gpm for > 15 minutes.OR 3. Leakage from the RCS to a location outside the Drywell >25 gpm for > 15 minutes.Basis: UNISOLABLE:

An open or breached system line that cannot be isolated, remotely or locally.This IC addresses RCS leakage which may be a precursor to a more significant event.In this case, RCS leakage has been detected and operators, following applicable procedures, have been unable to promptly isolate the leak. This condition is considered to be a potential degradation of the level of safety of the plant.EAL #1 and EAL #2 Basis These EALs are focused on a loss of mass from the RCS due to "unidentified leakage","pressure boundary leakage" or "identified leakage" (as these leakage types are defined in the plant Technical Specifications).

EAL #3 Basis This EAL addresses an RCS mass loss caused by an UNISOLABLE leak through an interfacing system.These EALs thus apply to leakage into the containment, a secondary-side system or a location outside of containment.

Month 20XX DR 3-100 EP-AA-1004 (Revision XX)

Dresden AnnexNuclear Dresden Annex FxeInn NuclerIsr RECOGNITION CATEGORY SYSTEM MALFUNCTIONS MU6 (cont)Basis (cont): The leak rate values for each EAL were selected because they are usually observable with normal Control Room indications.

Lesser values typically require time-consuming calculations to determine (e.g., a mass balance calculation).

EAL #1 uses a lower value that reflects the greater significance of unidentified or pressure boundary leakage.The release of mass from the RCS due to the as-designed/expected operation of any relief valve does not warrant an emergency classification.

A stuck-open Electromatic relief valve (ERV)/Target Rock SRV or ERV/ Target Rock SRV leakage is not considered either identified or unidentified leakage by Technical Specifications and, therefore, is not applicable to this EAL.The 15-minute threshold duration allows sufficient time for prompt operator actions to isolate the leakage, if possible.Escalation of the emergency classification level would be via ICs of Recognition Category R or F.Basis Reference(s):

1. NEI 99-01 Rev 6, SU4 2. Technical Specification 3.4.4, RCS Operational Leakage 3. UFSAR 5.2.5, Detection of Leakage through Reactor Coolant Pressure Boundary 4. Technical Specifications 3.4.5 5. Unit 2(3) Appendix A Unit NSO Daily Surveillance Log 6. DAN 902(3)-4 A-17 Drywell Equip Sump LvI HI-HI 7. DAN 902(3)-4 H-18 Drywell Floor Drn Sump LvI HI-HI 8. DOA 0040-01 Slow Leak 9. DOP 2000-24 Drywell Sump Operation 10. DGP 02-02 Reactor Vessel Slow Fill Month 20XX DR 3-101 EP-AA-1004 (Revision XX)

Dresden Annex Exelon Nuclear RECOGNITION CATEGORY SYSTEM MALFUNCTIONS MU7 Initiating Condition:

Loss of all On-site or Off-site communications capabilities.

Operating Mode Applicability:

1,2,3 Emergency Action Level (EAL): " Loss of ALL Table M3 Onsite communications capability affecting the ability to perform routine operations.

OR" Loss of ALL Table M3 Offsite communication capability affecting the ability to perform offsite notifications.

OR" Loss of ALL Table M3 NRC communication capability affecting the ability to perform NRC notifications.

Table M3 Communications Capability System Onsite Offsite NRC Plant Radio X Plant Page X Sound Powered Phones X All telephone Lines (Commercial and microwave)

X X X ENS X X HPN X X Satellite Phones X X Basis: This IC addresses a significant loss of on-site, offsite, or NRC communications capabilities.

While not a direct challenge to plant or personnel safety, this event warrants prompt notifications to Offsite Response Organizations (OROs) and the NRC.This IC should be assessed only when extraordinary means are being utilized to make communications possible (e.g., use of non-plant, privately owned equipment, relaying of on-site information via individuals or multiple radio transmission points, individuals being sent to offsite locations, etc.).Month 20XX DR 3-102 EP-AA-1004 (Revision XX)

Dresden Annex Dresden Annex Exelon Nuclear RECOGNITION CATEGORY SYSTEM MALFUNCTIONS MU7 (cont)Basis (cont): EAL #1 Basis Addresses a total loss of the communications methods used in support of routine plant operations.

EAL #2 Basis Addresses a total loss of the communications methods used to notify all OROs of an emergency declaration.

The OROs referred to here are listed in procedure EP-MW-114-100-F-01, Nuclear Accident Reporting System (NARS) Form.EAL #3 Basis Addresses a total loss of the communications methods used to notify the NRC of an emergency declaration.

Basis Reference(s):

1. NEI 99-01 Rev 6, SU6 2. EP-MW-124-1001 Facilities Inventories and Equipment Tests 3. UFSAR 9.5.2 4. DOA 0010-14 Loss of Off-Site Telephone Communication Systems Month 20XX DR 3-103 EP-AA-1004 (Revision XX)

Dresden Annex Exelon Nuclear RECOGNITION CATEGORY COLD SHUTDOWN / REFUELING SYSTEM MALFUNCTIONS CAI Initiating Condition:

Loss of all offsite and all onsite AC power to emergency buses for 15 minutes or longer.Operating Mode Applicability:

4,5, D Emergency Action Level (EAL): Note: " The Emergency Director should declare the event promptly upon determining that the applicable time has been exceeded, or will likely be exceeded." Loss of ALL offsite AC power to unit ECCS buses.AND" Failure of DG 2(3), shared DG 2/3 and SBO DG 2(3) emergency diesel generators to supply power to unit ECCS buses.AND" Failure to restore power to at least one unit ECCS bus in < 15 minutes from the time of loss of both offsite and onsite AC power.Basis: SAFETY SYSTEM: A system required for safe plant operation, cooling down the plant and/or placing it in the cold shutdown condition, including the ECCS. These are typically systems classified as safety-related This IC addresses a total loss of AC power that compromises the performance of all SAFETY SYSTEMS requiring electric power including those necessary for emergency core cooling, containment heat removal/pressure control, spent fuel heat removal and the ultimate heat sink.When in the cold shutdown, refueling, or defueled mode, this condition is not classified as a Site Area Emergency because of the increased time available to restore an emergency bus to service. Additional time is available due to the reduced core decay heat load, and the lower temperatures and pressures in various plant systems. Thus, when in these modes, this condition represents an actual or potential substantial degradation of the level of safety of the plant.Fifteen minutes was selected as a threshold to exclude transient or momentary power losses.Escalation of the emergency classification level would be via IC CS6 or RS1.Month 20XX DR 3-104 EP-AA-1004 (Revision XX)

Dresden Annex Exelon Nuclear RECOGNITION CATEGORY COLD SHUTDOWN / REFUELING SYSTEM MALFUNCTIONS CA1 (cont)Basis Reference(s):

1. NEI 99-01 Rev 6, CA2 2. UFSAR 8.3 3. 12E-2302A, Station Key Diagram 4160V and 480V Switchgears Part 1 4. DOA-6400-01, 138 KV System and 345 KV Alternate Supply Failure 5. DOA 6500-01 4KV Bus Failure 6. UFSAR Fig. 9.5-14 7. UFSAR 9.5.9 8. DOP 6620-05, Powering Unit 2(3) 4KV Busses via the SBO D/G 2(3)9. DGA-12 Partial or Complete Loss of AC Power Month 20XX DR 3-105 EP-AA-1004 (Revision XX)

Dresden Annex Exelon Nuclear RECOGNITION CATEGORY COLD SHUTDOWN / REFUELING SYSTEM MALFUNCTIONS cul Initiating Condition:

Loss of all but one AC power source to emergency buses for 15 minutes or longer.Operating Mode Applicability:

4,5, D Emergency Action Level (EAL): Note:* The Emergency Director should declare the event promptly upon determining that the applicable time has been exceeded, or will likely be exceeded.1. AC power capability to unit ECCS buses reduced to only one of the following power sources for > 15 minutes.* Reserve auxiliary Transformer TR-22 (TR-32)* Unit auxiliary transformer TR-21 (TR-31)* Unit Emergency Diesel Generator DG 2(3)* Shared Emergency Diesel Generator DG 2/3* Station Blackout Diesel Generator DG 2(3)* Unit crosstie breakers AND 2. ANY additional single power source failure will result in a loss of ALL AC power to SAFETY SYSTEMS.Basis: SAFETY SYSTEM: A system required for safe plant operation, cooling down the plant and/or placing it in the cold shutdown condition, including the ECCS. These are typically systems classified as safety-related.

This IC describes a significant degradation of offsite and onsite AC power sources such that any additional single failure would result in a loss of all AC power to SAFETY SYSTEMS. In this condition, the sole AC power source may be powering one, or more than one, train of safety-related equipment.

Month 20XX DR 3-106 EP-AA-1004 (Revision XX)

Dresden r Dlresden Annex FwAlnn Nui~clar RECOGNITION CATEGORY COLD SHUTDOWN / REFUELING SYSTEM MALFUNCTIONS CUI (cont)Basis (cont): When in the cold shutdown, refueling, or defueled mode, this condition is not classified as an Alert because of the increased time available to restore another power source to service. Additional time is available due to the reduced core decay heat load, and the lower temperatures and pressures in various plant systems. Thus, when in these modes, this condition is considered to be a potential degradation of the level of safety of the plant.An "AC power source" is a source recognized in AOPs and EOPs, and capable of supplying required power to an emergency bus. Some examples of this condition are presented below." A loss of all offsite power with a concurrent failure of all but one emergency power source (e.g., an onsite diesel generator)." A loss of all offsite power and loss of all emergency power sources (e.g., onsite diesel generators) with a single train of emergency buses being back-fed from the unit main generator." A loss of emergency power sources (e.g., onsite diesel generators) with a single train of emergency buses being back-fed from an offsite power source.Fifteen minutes was selected as a threshold to exclude transient or momentary losses of power.The subsequent loss of the remaining single power source would escalate the event to an Alert in accordance with IC CAl.Basis Reference(s):

1. NEI 99-01 Rev 6 CU2 2. UFSAR 8.3 3. 12E-2302A, Station Key Diagram 4160V and 480V Switchgears Part 1 4. DOA-6400-01, 138 KV System and 345 KV Alternate Supply Failure 5. DOA 6500-01 4KV Bus Failure 6. UFSAR Fig. 9.5-14 Single-Line Electrical Diagram of Station Blackout Generator Ties to Plant Auxiliary Electric System 7. UFSAR 9.5.9 Station Blackout System 8. DOP 6620-05, Powering Unit 2(3) 4KV Busses via the SBO D/G 2(3)9. DGA-12 Partial or Complete Loss of AC Power Month 20XX DR 3-107 EP-AA-1004 (Revision XX)

Dresden Annex Exelon Nuclear RECOGNITION CATEGORY COLD SHUTDOWN / REFUELING SYSTEM MALFUNCTIONS CA2 Initiating Condition:

Hazardous event affecting SAFETY SYSTEM required for the current operating mode.Operating Mode Applicability:

4,5 Emergency Action Level (EAL): 1. The occurrence of ANY of the following hazardous events: " Seismic event (earthquake)" Internal or external flooding event" High winds or tornado strike" FIRE" EXPLOSION" Other events with similar hazard characteristics as determined by the Shift Manager AND 2. EITHER of the following:

a. Event damage has caused indications of degraded performance in at least one train of a SAFETY SYSTEM required by Technical Specifications for the current operating mode.OR b. The event has caused VISIBLE DAMAGE to a SAFETY SYSTEM component or structure required by Technical Specifications for the current operating mode.Basis: FIRE: Combustion characterized by heat and light. Sources of smoke such as slipping drive belts or overheated electrical equipment do not constitute FIRES. Observation of flame is preferred but is NOT required if large quantities of smoke and heat are observed.EXPLOSION:

A rapid, violent and catastrophic failure of a piece of equipment due to combustion, chemical reaction or overpressurization.

A release of steam (from high energy lines or components) or an electrical component failure (caused by short circuits, grounding, arcing, etc.) should not automatically be considered an explosion.

Such events may require a post-event inspection to determine if the attributes of an explosion are present.Month 20XX DR 3-108 EP-AA-1004 (Revision XX)

Dresden Annex Dresen AnexExelon Nuclear RECOGNITION CATEGORY COLD SHUTDOWN / REFUELING SYSTEM MALFUNCTIONS CA2 (cont)Basis (cont): SAFETY SYSTEM: A system required for safe plant operation, cooling down the plant and/or placing it in the cold shutdown condition, including the ECCS. These are typically systems classified as safety-related.

VISIBLE DAMAGE: Damage to a component or structure that is readily observable without measurements, testing, or analysis.

The visual impact of the damage is sufficient to cause concern regarding the operability or reliability of the affected component or structure.

This IC addresses a hazardous event that causes damage to a SAFETY SYSTEM, or a structure containing SAFETY SYSTEM components, needed for the current operating mode, "needed", i.e. required to be operable by Technical Specifications for the current operating mode. This condition significantly reduces the margin to a loss or potential loss of a fission product barrier, and therefore represents an actual or potential substantial degradation of the level of safety of the plant. Manual or automatic electrical isolation of safety equipment due to flooding, in and of itself, does not constitute degraded performance and is classified under HU6.EAL #2.a Basis Addresses damage to a SAFETY SYSTEM train that is "needed", i.e. required to be operable by Technical Specifications for the current operating mode, and is in operation since indications for it will be readily available.

The indications of degraded performance should be significant enough to cause concern regarding the operability or reliability of the SAFETY SYSTEM train.EAL #2.b Basis Addresses damage to a SAFETY SYSTEM component that is "needed", i.e. required to be operable by Technical Specifications for the current operating mode, and is not in operation or readily apparent through indications alone, or to a structure containing SAFETY SYSTEM components.

Operators will make this determination based on the totality of available event and damage report information.

This is intended to be a brief assessment not requiring lengthy analysis or quantification of the damage.Escalation of the emergency classification level would be via IC CS6 or RSI.If the EAL conditions of CA2 are not met then assess the event via HU3, HU4, or HU6.Basis Reference(s):

1. NEI 99-01 Rev 6, CA6 Month 20XX DR 3-109 EP-AA-1004 (Revision XX)

Dresden Annex Exelon Nuclear RECOGNITION CATEGORY COLD SHUTDOWN / REFUELING SYSTEM MALFUNCTIONS CU3 Initiating Condition:

Loss of Vital DC power for 15 minutes or longer.Operating Mode Applicability:

4,5 Emergency Action Level (EAL): Note:* The Emergency Director should declare the event promptly upon determining that the applicable time has been exceeded, or will likely be exceeded.Voltage is < 105 VDC on required 125 VDC battery busses #2 and #3 for > 15 minutes.Basis: SAFETY SYSTEM: A system required for safe plant operation, cooling down the plant and/or placing it in the cold shutdown condition, including the ECCS. These are typically systems classified as safety-related.

This IC addresses a loss of Vital DC power which compromises the ability to monitor and control operable SAFETY SYSTEMS when the plant is in the cold shutdown or refueling mode. In these modes, the core decay heat load has been significantly reduced, and coolant system temperatures and pressures are lower; these conditions rise the time available to restore a vital DC bus to service. Thus, this condition is considered to be a potential degradation of the level of safety of the plant.As used in this EAL, "required" means the Vital DC buses necessary to support operation of the in-service, or operable, train or trains of SAFETY SYSTEM equipment.

For example, if Train A is out-of-service (inoperable) for scheduled outage maintenance work and Train B is in-service (operable), then a loss of Vital DC power affecting Train B would require the declaration of an Unusual Event. A loss of Vital DC power to Train A would not warrant an emergency classification.

Fifteen minutes was selected as a threshold to exclude transient or momentary power losses.Depending upon the event, escalation of the emergency classification level would be via IC CA6 or CA5, or an IC in Recognition Category R.Month 20XX DR 3-110 EP-AA-1004 (Revision XX)

Annex flresrh-n Annex FvAlnn NucleIiar RECOGNITION CATEGORY COLD SHUTDOWN / REFUELING SYSTEM MALFUNCTIONS CU3 (cont)Basis Reference(s):

1. NEI 99-01 Rev 6, CU4 2. UFSAR 8.3.2.2.1 Safety Related 125-V System 3. DOA 6900-02(3)

Failure of Unit 2(3) 125 VDC Power Supply 4. Technical Specification Basis B.3.8.5, DC Power Sources -Shutdown 5. Technical Specification Basis B.3.8.4, DC Power Sources -Operating Month 20XX DR 3-111 EP-AA-1004 (Revision XX)

Dresden Annex Exelon Nuclear RECOGNITION CATEGORY COLD SHUTDOWN / REFUELING SYSTEM MALFUNCTIONS CU4 Initiating Condition:

Loss of all onsite or offsite communications capabilities.

Operating Mode Applicability:

4,5, D Emergency Action Level (EAL): 1. Loss of ALL Table C1 Onsite communications capability affecting the ability to perform routine operations.

OR 2. Loss of ALL Table C1 Offsite communication capability affecting the ability to perform offsite notifications.

OR 3. Loss of ALL Table C1 NRC communication capability affecting the ability to perform NRC notifications.

Table C1 Communications Capability System Onsite Offsite NRC Plant Radio X Plant Page X Sound Powered Phones X All telephone Lines (Commercial and microwave)

X X X ENS X X HPN X X Satellite Phones X X Basis: This IC addresses a significant loss of on-site, offsite, or NRC communications capabilities.

While not a direct challenge to plant or personnel safety, this event warrants prompt notifications to Offsite Response Organizations (OROs) and the NRC.This IC should be assessed only when extraordinary means are being utilized to make communications possible (e.g., use of non-plant, privately owned equipment, relaying of on-site information via individuals or multiple radio transmission points, individuals being sent to offsite locations, etc.).EAL #1 Basis Addresses a total loss of the communications methods used in support of routine plant operations.

Month 20XX DR 3-112 EP-AA-1004 (Revision XX)

Dresden Annex Exelon Nuclear RECOGNITION CATEGORY COLD SHUTDOWN / REFUELING SYSTEM MALFUNCTIONS CU4 (cont)Basis (cont): EAL #2 Basis Addresses a total loss of the communications methods used to notify all OROs of an emergency declaration.

The OROs referred to here are listed in procedure EP-MW-114-100-F-01, Nuclear Accident Reporting System (NARS) Form.EAL #3 Basis Addresses a total loss of the communications methods used to notify the NRC of an emergency declaration.

Basis Reference(s):

1. NEI 99-01 Rev 6, CU5 2. EP-MW-124-1001 Facilities Inventories and Equipment Tests 3. UFSAR 9.5.2 4. DOA 0010-14 Loss of Off-Site Telephone Communication Systems Month 20XX DR 3-113 EP-AA-1004 (Revision XX) nradin Annav Pvtalnn k, ,-l,-nr RECOGNITION CATEGORY COLD SHUTDOWN / REFUELING SYSTEM MALFUNCTIONS CA5 Initiating Condition:

Inability to maintain the plant in cold shutdown.Operating Mode Applicability:

4,5 Emergency Action Level (EAL): Note:* The Emergency Director should declare the event promptly upon determining that the applicable time has been exceeded, or will likely be exceeded.1. UNPLANNED rise in RCS temperature

> 212°F due to loss of decay heat removal for > Table C2 duration.Table C2 RCS Heat-up Duration Thresholds RCS Containment Closure Heat-up Status Status Duration Intact Not Applicable 60 minutes*Not Intact Established 20 minutes*Not Established 0 minutes* If an RCS heat removal system is in operation within this time frame and RCS temperature is being reduced, then EAL #1 is not applicable.

OR 2. UNPLANNED RPV pressure rise > 10 psig as a result of temperature rise due to loss of decay heat removal.Basis: UNPLANNED:

A parameter change or an event that is not 1) the result of an intended evolution or 2) an expected plant response to a transient.

The cause of the parameter change or event may be known or unknown.CONTAINMENT CLOSURE: The procedurally defined conditions or actions taken to secure containment (primary or secondary) and its associated structures, systems, and components as a functional barrier to fission product release under shutdown conditions.

Month 20XX DR 3-114 EP-AA-1004 (Revision XX)

Dresden Annex Exelon Nuclear D...s.en..Annex.Exelon Nulea.r RECOGNITION CATEGORY COLD SHUTDOWN / REFUELING SYSTEM MALFUNCTIONS CA5 (cont)Basis (cont): RCS is intact when the RCS pressure boundary is in its normal condition for the Cold Shutdown mode of operation (e.g. no freeze seals, or steam line nozzle plugs, etc.).This IC addresses conditions involving a loss of decay heat removal capability or an addition of heat to the RCS in excess of that which can currently be removed. Either condition represents an actual or potential substantial degradation of the level of safety of the plant.A momentary UNPLANNED excursion above the Technical Specification cold shutdown temperature limit when the heat removal function is available does not warrant a classification.

The RCS Heat-up Duration Thresholds table addresses a rise in RCS temperature when CONTAINMENT CLOSURE is established but the RCS is not intact. The 20-minute criterion was included to allow time for operator action to address the temperature rise.The RCS Heat-up Duration Thresholds table also addresses a rise in RCS temperature with the RCS intact. The status of CONTAINMENT CLOSURE is not crucial in this condition since the intact RCS is providing a high pressure barrier to a fission product release. The 60-minute time frame should allow sufficient time to address the temperature rise without a substantial degradation in plant safety.Finally, in the case where there is a rise in RCS temperature, the RCS is not intact and CONTAINMENT CLOSURE is not established, no heat-up duration is allowed (i.e., 0 minutes).

This is because 1) the evaporated reactor coolant may be released directly into the Containment atmosphere and subsequently to the environment, and 2) there is reduced reactor coolant inventory above the top of irradiated fuel.EAL #2 provides a pressure-based indication of RCS heat-up.Escalation of the emergency classification level would be via IC CS6 or RSI.Month 20XX DR 3-115 EP-AA-1004 (Revision XX)

Annex Dresden Annex FvAlnn MNuir-lar RECOGNITION CATEGORY COLD SHUTDOWN / REFUELING SYSTEM MALFUNCTIONS CA5 (cont)Basis Reference(s):

1. NEI 99-01 Rev 6, CA3 2. Technical Specifications 3.6.1.1 3. Technical Specifications 3.6.4.1 4. OU-AA-103 Shutdown Safety Management Program 5. DGP 02-01 Unit Shutdown 6. DOA 0201-04 Loss of Vessel Flange, Shell, or Recirculation (Recirc) Loop Temperature Recorders During Heatup or Cooldown 7. DGP 02-02 Reactor Vessel Slow Fill 8. DIS 0263-19 Reactor Wide Range Pressure Transmitter Calibration Eq.Maintenance Inspection Month 20XX DR 3-116 EP-AA-1004 (Revision XX)

Annexr Dlresden Annex ExeInn NuclarIcr RECOGNITION CATEGORY COLD SHUTDOWN I REFUELING SYSTEM MALFUNCTIONS CU5 Initiating Condition:

UNPLANNED rise in RCS temperature Operating Mode Applicability:

4,5 Emergency Action Level (EAL): Note:* The Emergency Director should declare the event promptly upon determining that the applicable time has been exceeded, or will likely be exceeded.1. UNPLANNED rise in RCS temperature

> 212°F due to loss of decay heat removal.OR 2. Loss of the following for >15 minutes.* ALL RCS temperature indications AND" ALL RPV water level indications Basis: UNPLANNED:

A parameter change or an event that is not 1) the result of an intended evolution or 2) an expected plant response to a transient.

The cause of the parameter change or event may be known or unknown.CONTAINMENT CLOSURE: The procedurally defined conditions or actions taken to secure containment (primary or secondary) and its associated structures, systems, and components as a functional barrier to fission product release under shutdown conditions.

This IC addresses an UNPLANNED rise in RCS temperature above the Technical Specification cold shutdown temperature limit, or the inability to determine RCS temperature and level, represents a potential degradation of the level of safety of the plant. If the RCS is not intact and CONTAINMENT CLOSURE is not established during this event, the Emergency Director should also refer to IC CA5.RCS is intact when the RCS pressure boundary is in its normal condition for the Cold Shutdown mode of operation (e.g. no freeze seals, or steam line nozzle plugs, etc.).A momentary UNPLANNED excursion above the Technical Specification cold shutdown temperature limit when the heat removal function is available does not warrant a classification.

Month 20XX DR 3-117 EP-AA-1004 (Revision XX)

Dresden AnnexNuclear Dresden Annex FwceInn Nucleiar RECOGNITION CATEGORY COLD SHUTDOWN / REFUELING SYSTEM MALFUNCTIONS CU5 (cont)Basis (cont): EAL #1 involves a loss of decay heat removal capability, or an addition of heat to the RCS in excess of that which can currently be removed, such that reactor coolant temperature cannot be maintained below the cold shutdown temperature limit specified in Technical Specifications.

During this condition, there is no immediate threat of fuel damage because the core decay heat load has been reduced since the cessation of power operation.

During an outage, the level in the reactor vessel will normally be maintained above the reactor vessel flange. Refueling evolutions that lower water level below the reactor vessel flange are carefully planned and controlled.

A loss of forced decay heat removal at reduced inventory may result in a rapid rise in reactor coolant temperature depending on the time after shutdown.EAL #2 reflects a condition where there has been a significant loss of instrumentation capability necessary to monitor RCS conditions and operators would be unable to monitor key parameters necessary to assure core decay heat removal. During this condition, there is no immediate threat of fuel damage because the core decay heat load has been reduced since the cessation of power operation.

Fifteen minutes was selected as a threshold to exclude transient or momentary losses of indication.

Escalation to Alert would be via IC CA6 based on an inventory loss or IC CA5 based on exceeding plant configuration-specific time criteria.Basis Reference(s):

1. NEI 99-01 Rev 6, CU3 2. Technical Specifications Table 1.1-1 3. DGP 02-01 UNIT SHUTDOWN 4. DOA 0201-04, Loss of Vessel Flange, Shell, or Recirculation (Recirc) Loop Temperature Recorders During Heatup or Cooldown 5. DGP 02-02 Reactor Vessel Slow Fill 6. DEOP 0010-00 Guidelines for Use or Dresden Emergency Operating Procedures and Severe Accident Management Guidelines

7. DEOP 100 RPV Control, Table A 8. DIP 0260-01 Refuel Outage Reactor Vessel and Cavity Level Instrumentation Month 20XX DR 3-118 EP-AA-1004 (Revision XX)

Dresden Annex Exelon Nuclear RECOGNITION CATEGORY COLD SHUTDOWN / REFUELING SYSTEM MALFUNCTIONS CG6 Initiating Condition:

Loss of RPV inventory affecting fuel clad integrity with containment challenged.

Operating Mode Applicability:

4,5 Emergency Action Level (EAL): Note:* The Emergency Director should declare the event promptly upon determining that the applicable time has been exceeded, or will likely be exceeded.1. a. RPV water level < -143 inches (TAF) for > 30 minutes.AND b. Any Containment Challenge Indication (Table C4)OR 2. a. RPV water level unknown for > 30 minutes.AND b. Core uncovery is indicated by ANY of the following: " Table C3 indications of a sufficient magnitude to indicate core uncovery.OR* Refuel Floor Hi Range ARM >3000 mR/hr.AND c. ANY Containment Challenge Indication (Table C4)Table C3 Indications of RCS Leakage" UNPLANNED floor or equipment sump level rise*" UNPLANNED Torus level rise** UNPLANNED vessel make up rate rise* Observation of leakage or inventory loss*Rise in level is attributed to a loss of RPV inventory.

Month 20XX DR 3-119 EP-AA-1004 (Revision XX) nrgcu{an Annov=wn1rn Kbir-Lanr-.~a--. 5'* *~ 'en fl~ I I., I I U t -i*RECOGNITION CATEGORY COLD SHUTDOWN / REFUELING SYSTEM MALFUNCTIONS CG6 (cont)Emergency Action Level (EAL) (cont): Table C4 Containment Challenge Indications

• Primary Containment Hydrogen Concentration

> 6% and Oxygen > 5%* UNPLANNED rise in containment pressure* CONTAINMENT CLOSURE not established*

• ANY Secondary Containment radiation monitor > DEOP 300-1 Maximum Safe operating level.* if CONTAINMENT CLOSURE is re-established prior to exceeding the 30-minute core uncovery time limit, then escalation to a General Emergency is not required.Basis: UNPLANNED:

A parameter change or an event that is not 1) the result of an intended evolution or 2) an expected plant response to a transient.

The cause of the parameter change or event may be known or unknown.IMMINENT:

The trajectory of events or conditions is such that an EAL will be met within a relatively short period of time regardless of mitigation or corrective actions.CONTAINMENT CLOSURE: The procedurally defined conditions or actions taken to secure containment (primary or secondary for BWR) and its associated structures, systems, and components as a functional barrier to fission product release under shutdown conditions.

This IC addresses the inability to restore and maintain reactor vessel level above the top of active fuel with containment challenged.

This condition represents actual or IMMINENT substantial core degradation or melting with potential for loss of containment integrity.

Releases can be reasonably expected to exceed EPA Protective Action Guidelines (PAG) exposure levels offsite for more than the immediate site area.Following an extended loss of core decay heat removal and inventory makeup, decay heat will cause reactor coolant boiling and a further reduction in reactor vessel level. If RCS/reactor vessel level cannot be restored, fuel damage is probable.With CONTAINMENT CLOSURE not established, there is a high potential for a direct and unmonitored release of radioactivity to the environment.

If CONTAINMENT CLOSURE is re-established prior to exceeding the 30-minute time limit, then declaration of a General Emergency is not required.Month 20XX DR 3-120 EP-AA-1004 (Revision XX)

Dresden Annex Exelon Nuclear RECOGNITION CATEGORY COLD SHUTDOWN I REFUELING SYSTEM MALFUNCTIONS CG6 (cont)Basis (cont): The existence of an explosive mixture means, at a minimum, that the containment atmospheric hydrogen concentration is sufficient to support a hydrogen burn (i.e., at the lower deflagration limit). A hydrogen burn will raise containment pressure and could result in collateral equipment damage leading to a loss of containment integrity.

It therefore represents a challenge to Containment integrity.

In the early stages of a core uncovery event, it is unlikely that hydrogen buildup due to a core uncovery could result in an explosive gas mixture in containment.

If all installed hydrogen gas monitors are out-of-service during an event leading to fuel cladding damage, it may not be possible to obtain a containment hydrogen gas concentration reading as ambient conditions within the containment will preclude personnel access.During periods when installed containment hydrogen gas monitors are out-of-service, operators may use the other listed indications to assess whether or not containment is challenged.

EAL #1 Basis The 30-minute criterion is tied to a readily recognizable event start time (i.e., the total loss of ability to monitor level), and allows sufficient time to monitor, assess and correlate reactor and plant conditions to determine if core uncovery has actually occurred (i.e., to account for various accident progression and instrumentation uncertainties).

It also allows sufficient time for performance of actions to terminate leakage, recover inventory control/makeup equipment and/or restore level monitoring.

The inability to monitor RPV water level may be caused by instrumentation and/or power failures, or water level dropping below the range of available instrumentation.

If water level cannot be monitored, operators may determine that an inventory loss is occurring by observing changes in sump and/or tank levels. Sump and/or tank level changes must be evaluated against other potential sources of water flow to ensure they are indicative of leakage from the RPV.These EALs address concerns raised by Generic Letter 88-17, Loss of Decay Heat Removal; SECY 91-283, Evaluation of Shutdown and Low Power Risk Issues; NUREG-1449, Shutdown and Low-Power Operation at Commercial Nuclear Power Plants in the United States; and NUMARC 91-06, Guidelines for Industry Actions to Assess Shutdown Management.

Month 20XX DR 3-121 EP-AA-1004 (Revision XX)

Dresden Annex Exelon Nuclear RECOGNITION CATEGORY COLD SHUTDOWN / REFUELING SYSTEM MALFUNCTIONS CG6 (cont)Basis Reference(s):

1. NEI 99-01 Rev 6, CG1 2. DEOP 0100-00 RPV Control 3. Technical Specifications 3.3.1.2 4. DOS 0700-01 SRM Functional Test 5. DAN 902(3)-5 E-4 SRM Short Period 6. DEOP 0200-01 Primary Containment Control 7. DEOP 0200-02 Hydrogen Control 8. DEOP 0300-01 Secondary Containment Control 9. USAR Table 6.2-1 10. EP-EAL-0501 Month 20XX DR 3-122 EP-AA-1 004 (Revision XX)

Dresden Annex Exelon Nuclear RECOGNITION CATEGORY COLD SHUTDOWN / REFUELING SYSTEM MALFUNCTIONS CS6 Initiating Condition:

Loss of RPV inventory affecting core decay heat removal capability.

Operating Mode Applicability:

4,5 Emergency Action Level (EAL): Note:* The Emergency Director should declare the event promptly upon determining that the applicable time has been exceeded, or will likely be exceeded.1. With CONTAINMENT CLOSURE not established, RPV water level< -60 inches OR 2. With CONTAINMENT CLOSURE established, RPV water level< -143 inches (TAF)OR 3. a. RPV water level unknown for > 30 minutes AND b. Core uncovery is indicated by ANY of the following:

• Table C3 indications of a sufficient magnitude to indicate core uncovery.OR* Refueling Floor Hi Range ARM >3000 mR/hr.Table C3 Indications of RCS Leakage" UNPLANNED floor or equipment sump level rise** UNPLANNED Torus level rise*" UNPLANNED vessel make up rate rise" Observation of leakage or inventory loss*Rise in level is attributed to a loss of RPV inventory.

Month 20XX DR 3-123 EP-AA-1004 (Revision XX)

Dresden Annex Exelon Nuclear RECOGNITION CATEGORY COLD SHUTDOWN I REFUELING SYSTEM MALFUNCTIONS CS6 (cont)Basis: CONTAINMENT CLOSURE: The procedurally defined conditions or actions taken to secure containment (primary or secondary for BWR) and its associated structures, systems, and components as a functional barrier to fission product release under shutdown conditions.

UNPLANNED:

A parameter change or an event that is not 1) the result of an intended evolution or 2) an expected plant response to a transient.

The cause of the parameter change or event may be known or unknown.The lost inventory may be due to a RCS component failure, a loss of configuration control or prolonged boiling of reactor coolant. These conditions entail major failures of plant functions needed for protection of the public and thus warrant a Site Area Emergency declaration.

Following an extended loss of core decay heat removal and inventory makeup, decay heat will cause reactor coolant boiling and a further reduction in reactor vessel level. If RCS/reactor vessel level cannot be restored, fuel damage is probable.Outage/shutdown contingency plans typically provide for re-establishing or verifying CONTAINMENT CLOSURE following a loss of heat removal or RCS inventory control functions.

The difference in the specified RCS/reactor vessel levels of EALs 1 and 2 reflect the fact that with CONTAINMENT CLOSURE established, there is a lower probability of a fission product release to the environment.

In EAL #3.a, the 30-minute criterion is tied to a readily recognizable event start time (i.e., the total loss of ability to monitor level), and allows sufficient time to monitor, assess and correlate reactor and plant conditions to determine if core uncovery has actually occurred (i.e., to account for various accident progression and instrumentation uncertainties).

It also allows sufficient time for performance of actions to terminate leakage, recover inventory control/makeup equipment and/or restore level monitoring.

The inability to monitor RPV water level may be caused by instrumentation and/or power failures, or water level dropping below the range of available instrumentation.

If water level cannot be monitored, operators may determine that an inventory loss is occurring by observing changes in sump and/or tank levels. Sump and/or tank level changes must be evaluated against other potential sources of water flow to ensure they are indicative of leakage from the RPV.Month 20XX DR 3-124 EP-AA-1004 (Revision XX)

Dresden Annex Exelon Nuclear RECOGNITION CATEGORY COLD SHUTDOWN / REFUELING SYSTEM MALFUNCTIONS CS6 (cont)Basis (cont): These EALs address concerns raised by Generic Letter 88-17, Loss of Decay Heat Removal; SECY 91-283, Evaluation of Shutdown and Low Power Risk Issues; NUREG-1449, Shutdown and Low-Power Operation at Commercial Nuclear Power Plants in the United States; and NUMARC 91-06, Guidelines for Industry Actions to Assess Shutdown Management.

Escalation of the emergency classification level would be via IC CG6 or RG1.Basis Reference(s):

1. NEI 99-01 Rev 6, CS1 2. Technical Specifications Table 3.3.5.1 1 3. UFSAR 5.2.5 4. DEOP 0010-00 Guidelines for Use or Dresden Emergency Operating Procedures and Severe Accident Management Guidelines

5. DEOP 0100-00 RPV Control 6. Unit 2(3) Appendix A Unit NSO Daily Surveillance Log 7. DAN 902(3)-4 A-17 Drywell Equip Sump LvI HI-HI 8. DAN 902(3)-4 H-18 Drywell Floor Drn Sump Lvl HI-HI 9. DOA 0040-01 Slow Leak 10. DOP 2000-24 Drywell Sump Operation 11. Technical Specifications 3.3.1.2 12 DOS 0700-01 SRM Functional Test 13. DAN 902(3)-5 E-4 SRM Short Period Month 20XX DR 3-125 EP-AA-1004 (Revision XX)

Dresden Annex Exelon Nuclear RECOGNITION CATEGORY COLD SHUTDOWN / REFUELING SYSTEM MALFUNCTIONS CA6 Initiating Condition:

Loss of RPV inventory.

Operating Mode Applicability:

4,5 Emergency Action Level (EAL): Note:* The Emergency Director should declare the event promptly upon determining that the applicable time has been exceeded, or will likely be exceeded.1. Loss of RPV inventory as indicated by level < -54 inches.OR 2. a. RPV water level unknown for > 15 minutes.AND b. Loss of RPV inventory per Table C3 indications.

Table C3 Indications of RCS Leakage* UNPLANNED floor or equipment sump level rise** UNPLANNED Torus level rise*" UNPLANNED vessel make up rate rise* Observation of leakage or inventory loss*Rise in level is attributed to a loss of RPV inventory.

Basis: UNPLANNED:

A parameter change or an event that is not 1) the result of an intended evolution or 2) an expected plant response to a transient.

The cause of the parameter change or event may be known or unknown.This IC addresses conditions that are precursors to a loss of the ability to adequately cool irradiated fuel (i.e., a precursor to a challenge to the fuel clad barrier).

This condition represents a potential substantial reduction in the level of plant safety.Month 20XX DR 3-126 EP-AA-1004 (Revision XX)

Dresden Annex Exelon Nuclear RECOGNITION CATEGORY COLD SHUTDOWN / REFUELING SYSTEM MALFUNCTIONS CA6 (cont)Basis (cont): EAL #1 Basis A lowering of water level below -54.15 inches indicates that operator actions have not been successful in restoring and maintaining RPV water level. The heat-up rate of the coolant will rise as the available water inventory is reduced. A continuing drop in water level will lead to core uncovery.Although related, EAL #1 is concerned with the loss of RCS inventory and not the potential concurrent effects on systems needed for decay heat removal (e.g., loss of a Residual Heat Removal suction point). A rise in RCS temperature caused by a loss of decay heat removal capability is evaluated under IC CA5.EAL #2 Basis The inability to monitor RPV water level may be caused by instrumentation and/or power failures, or water level dropping below the range of available instrumentation.

If water level cannot be monitored, operators may determine that an inventory loss is occurring by observing changes in sump and/or tank levels. Sump and/or tank level changes must be evaluated against other potential sources of water flow to ensure they are indicative of leakage from the RPV.The 15-minute duration for the loss of level indication was chosen because it is half of the EAL duration specified in IC CS6 If the RPV water level continues to lower, then escalation to Site Area Emergency would be via IC CS6.Basis Reference(s):

1. NEI 99-01 Rev 6, CA1 2. USAR 5.2.5, Detection of Leakage through Reactor Coolant Pressure Boundary 3. Technical Specification 3.3.5.1, Emergency Core Cooling System (ECCS)Instrumentation

4. DEOP 0010-00 Guidelines for Use or Dresden Emergency Operating Procedures and Severe Accident Management Guidelines

5. DEOP 100 RPV Control 6. Unit 2(3) Appendix A Unit NSO Daily Surveillance Log 7. DAN 902(3)-4 A-17 Drywell Equip Sump Lvl HI-HI 8. DAN 902(3)-4 H-18 Drywell Floor Drn Sump Lvl HI-HI 9. DOA 0040-01 Slow Leak 10. DOP 2000-24 Drywell Sump Operation Month 20XX DR 3-127 EP-AA-1004 (Revision XX) fnari4mn Annov=wn1^n K1"&-1Amnr RECOGNITION CATEGORY COLD SHUTDOWN / REFUELING SYSTEM MALFUNCTIONS CU6 Initiating Condition:

UNPLANNED loss of RPV inventory for 15 minutes or longer.Operating Mode Applicability:

4,5 Emergency Action Level (EAL): Note:* The Emergency Director should declare the event promptly upon determining that the applicable time has been exceeded, or will likely be exceeded.1. UNPLANNED loss of reactor coolant results in the inability to restore and maintain RPV water level above the procedurally established lower limit for > 15 minutes.OR 2. a. RPV water level unknown AND b. Loss of RPV inventory per Table C3 indications.

Table C3 Indications of RCS Leakage* UNPLANNED floor or equipment sump level rise*" UNPLANNED Torus level rise*" UNPLANNED vessel make up rate rise* Observation of leakage or inventory loss*Rise in level is attributed to a loss of RPV inventory.

Month 20XX DR 3-128 EP-AA-1004 (Revision XX)

Dresden Annex Ex..lon NuceIa.r RECOGNITION CATEGORY COLD SHUTDOWN / REFUELING SYSTEM MALFUNCTIONS CU6 (cont)Basis: UNPLANNED:

A parameter change or an event that is not 1) the result of an intended evolution or 2) an expected plant response to a transient.

The cause of the parameter change or event may be known or unknown.This IC addresses the inability to restore and maintain water level to a required minimum level (or the lower limit of a level band), or a loss of the ability to monitor RPV water level concurrent with indications of coolant leakage. Either of these conditions is considered to be a potential degradation of the level of safety of the plant.The procedurally established lower limit is not an operational band established above the procedural limit to allow for operator action prior to exceeding the procedural limit, but it is the procedurally established lower limit.Refueling evolutions that lower RCS water inventory are carefully planned and controlled.

An UNPLANNED event that results in water level decreasing below a procedurally required limit warrants the declaration of an Unusual Event due to the reduced water inventory that is available to keep the core covered.EAL #1 recognizes that the minimum required RPV water level can change several times during the course of a refueling outage as different plant configurations and system lineups are implemented.

This EAL is met if the minimum level, specified for the current plant conditions, cannot be maintained for 15 minutes or longer. The minimum level is typically specified in the applicable operating procedure but may be specified in another controlling document.The 15-minute threshold duration allows sufficient time for prompt operator actions to restore and maintain the expected water level. This criterion excludes transient conditions causing a brief lowering of water level.EAL #2 addresses a condition where all means to determine RPV water level have been lost. In this condition, operators may determine that an inventory loss is occurring by observing changes in sump and/or tank levels. Sump and/or tank level changes must be evaluated against other potential sources of water flow to ensure they are indicative of leakage from the RPV.Continued loss of RCS inventory may result in escalation to the Alert emergency classification level via either IC CA6 or CA5.Month 20XX DR 3-129 EP-AA-1004 (Revision XX)

Nr~rga~n Annay flr~~,~ut Ancv Fvinn NucleIar RECOGNITION CATEGORY COLD SHUTDOWN / REFUELING SYSTEM MALFUNCTIONS CU6 (cont)Basis Reference(s):

1. NEI 99-01, Rev. 6 CU1 2. USAR 5.2.5, Detection of Leakage through Reactor Coolant Pressure Boundary 3. Technical Specifications 3.4.4 4. Technical Specifications 3.4.5 5. Unit 2(3) Appendix A Unit NSO Daily Surveillance Log 6. DAN 902(3)-4 A-17 Drywell Equip Sump LvI HI-HI 7. DAN 902(3)-4 H-18 Drywell Floor Drn Sump Lvl HI-HI 8. DOA 0040-01 Slow Leak 9. DOP 2000-24 Drywell Sump Operation 10. DGP 02-02 Reactor Vessel Slow Fill 11. DEOP 0010-00 Guidelines for Use or Dresden Emergency Operating Procedures and Severe Accident Management Guidelines

12. DEOP 0100-00 RPV Control, Table A 13. DIP 0260-01 Refuel Outage Reactor Vessel and Cavity Level Instrumentation

14. Technical Specifications Table 3.3.5.1 1 Month 20XX DR 3-130 EP-AA-1004 (Revision XX)

Dresden Annex Exallon Nuclear RECOGNITION CATEGORY HAZARDS AND OTHER CONDITIONS AFFECTING PLANT SAFETY HG1 Initiating Condition:

HOSTILE ACTION resulting in loss of physical control of the facility.Operating Mode Applicability:

1, 2,3,4,5, D Emergency Action Level (EAL): 1. A notification from the Security Force that a HOSTILE ACTION is occurring or has occurred within the PROTECTED AREA.AND 2. a. ANY Table H1 safety function cannot be controlled or maintained.

OR b. Damage to spent fuel has occurred or is IMMINENT Table H1 Safety Functions* Reactivity Control (ability to shut down the reactor and keep it shutdown)* RPV Water Level (ability to cool the core)* RCS Heat Removal (ability to maintain heat sink)Basis: HOSTILE ACTION: An act toward a NPP or its personnel that includes the use of violent force to destroy equipment, take HOSTAGES, and/or intimidate the licensee to achieve an end. This includes attack by air, land, or water using guns, explosives, PROJECTILEs, vehicles, or other devices used to deliver destructive force. Other acts that satisfy the overall intent may be included.

HOSTILE ACTION should not be construed to include acts of civil disobedience or felonious acts that are not part of a concerted attack on the NPP. Non-terrorism-based EALs should be used to address such activities (i.e., this may include violent acts between individuals in the owner controlled area).HOSTAGE: A person(s) held as leverage against the station to ensure that demands will be met by the station.PROJECTILE:

An object directed toward a NPP that could cause concern for its continued operability, reliability, or personnel safety.PROTECTED AREA: An area that normally encompasses all controlled areas within the security protected area fence.Month 20XX DR 3-131 EP-AA-1004 (Revision XX)

Dresden Annex Exellon Nuclear RECOGNITION CATEGORY HAZARDS AND OTHER CONDITIONS AFFECTING PLANT SAFETY HG1 Basis (cont): IMMINENT:

The trajectory of events or conditions is such that an EAL will be met within a relatively short period of time regardless of mitigation or corrective actions.HOSTILE FORCE: Any individuals who are engaged in a determined assault, overtly or by stealth and deception, equipped with suitable weapons capable of killing, maiming, or causing destruction.

This IC addresses an event in which a HOSTILE FORCE has taken physical control of the facility to the extent that the plant staff can no longer operate equipment necessary to maintain key safety functions.

It also addresses a HOSTILE ACTION leading to a loss of physical control that results in actual or IMMINENT damage to spent fuel due to 1) damage to a spent fuel pool cooling system (e.g., pumps, heat exchangers, controls, etc.) or, 2) loss of spent fuel pool integrity such that sufficient water level cannot be maintained.

Timely and accurate communications between Security Shift Supervision and the Control Room is essential for proper classification of a security-related event.Security plans and terminology are based on the guidance provided by NEI 03-12, Template for the Security Plan, Training and Qualification Plan, Safeguards Contingency Plan [and Independent Spent Fuel Storage Installation Security Program].Basis Reference(s):

1. NEI 99-01, Rev. 6 HG1 2. Station Security Plan -Appendix C Month 20XX DR 3-132 EP-AA-1004 (Revision XX) nroarian Annov Mvm1^n KI"r-haftr RECOGNITION CATEGORY HAZARDS AND OTHER CONDITIONS AFFECTING PLANT SAFETY HS1 Initiating Condition:

HOSTILE ACTION within the PROTECTED AREA.Operating Mode Applicability:

1, 2,3,4,5, D Emergency Action Level (EAL): A notification from the Security Force that a HOSTILE ACTION is occurring or has occurred within the PROTECTED AREA.Basis: HOSTILE ACTION: An act toward a NPP or its personnel that includes the use of violent force to destroy equipment, take HOSTAGES, and/or intimidate the licensee to achieve an end. This includes attack by air, land, or water using guns, explosives, PROJECTILEs, vehicles, or other devices used to deliver destructive force. Other acts that satisfy the overall intent may be included.

HOSTILE ACTION should not be construed to include acts of civil disobedience or felonious acts that are not part of a concerted attack on the NPP. Non-terrorism-based EALs should be used to address such activities (i.e., this may include violent acts between individuals in the owner controlled area).HOSTAGE: A person(s) held as leverage against the station to ensure that demands will be met by the station.PROJECTILE:

An object directed toward a NPP that could cause concern for its continued operability, reliability, or personnel safety.PROTECTED AREA: An area that normally encompasses all controlled areas within the security protected area fence.HOSTILE FORCE: Any individuals who are engaged in a determined assault, overtly or by stealth and deception, equipped with suitable weapons capable of killing, maiming, or causing destruction.

INDEPENDENT SPENT FUEL STORAGE INSTALLATION (ISFSI): A complex that is designed and constructed for the interim storage of spent nuclear fuel and other radioactive materials associated with spent fuel storage.This IC addresses the occurrence of a HOSTILE ACTION within the PROTECTED AREA. This event will require rapid response and assistance due to the possibility for damage to plant equipment.

Timely and accurate communications between Security Shift Supervision and the Control Room is essential for proper classification of a security-related event.Security plans and terminology are based on the guidance provided by NEI 03-12, Template for the Security Plan, Training and Qualification Plan, Safeguards Contingency Plan [and Independent Spent Fuel Storage Installation Security Program].Month 20XX DR 3-133 EP-AA-1004 (Revision XX)

Dresden Annex Exelon Nuclear RECOGNITION CATEGORY HAZARDS AND OTHER CONDITIONS AFFECTING PLANT SAFETY HSI (cont)Basis (cont): As time and conditions allow, these events require a heightened state of readiness by the plant staff and implementation of onsite protective measures (e.g., evacuation, dispersal or sheltering).

The Site Area Emergency declaration will mobilize ORO resources and have them available to develop and implement public protective actions in the unlikely event that the attack is successful in impairing multiple safety functions.

This IC does not apply to a HOSTILE ACTION directed at an ISFSI PROTECTED AREA located outside the plant PROTECTED AREA; such an attack should be assessed using IC HA1. It also does not apply to incidents that are accidental events, acts of civil disobedience, or otherwise are not a HOSTILE ACTION perpetrated by a HOSTILE FORCE. Examples include the crash of a small aircraft, shots from hunters, physical disputes between employees, etc. Reporting of these types of events is adequately addressed by other EALs, or the requirements of 10 CFR § 73.71 or 10 CFR§ 50.72.Escalation of the emergency classification level would be via IC HG1.Basis Reference(s):

1. NEI 99-01 Rev 6, HS1 3. Station Security Plan -Appendix C Month 20XX DR 3-134 EP-AA-1004 (Revision XX)

Annexr Dresden Annex Fvalnn Niinanr~I RECOGNITION CATEGORY HAZARDS AND OTHER CONDITIONS AFFECTING PLANT SAFETY HA1 Initiating Condition:

HOSTILE ACTION within the OWNER CONTROLLED AREA or airborne attack threat within 30 minutes.Operating Mode Applicability:

1,2,3,4,5, D Emergency Action Level (EAL): 1. A validated notification from NRC of an aircraft attack threat < 30 minutes from the site.OR 2. Notification by the Security Force that a HOSTILE ACTION is occurring or has occurred within the OWNER CONTROLED AREA.Basis: HOSTILE ACTION: An act toward a NPP or its personnel that includes the use of violent force to destroy equipment, take HOSTAGES, and/or intimidate the licensee to achieve an end. This includes attack by air, land, or water using guns, explosives, PROJECTILEs, vehicles, or other devices used to deliver destructive force. Other acts that satisfy the overall intent may be included.

HOSTILE ACTION should not be construed to include acts of civil disobedience or felonious acts that are not part of a concerted attack on the NPP. Non-terrorism-based EALs should be used to address such activities (i.e., this may include violent acts between individuals in the owner controlled area).HOSTAGE: A person(s) held as leverage against the station to ensure that demands will be met by the station.PROJECTILE:

An object directed toward a NPP that could cause concern for its continued operability, reliability, or personnel safety.OWNER CONTROLLED AREA (OCA): The property associated with the station and owned by the company. Access is normally limited to persons entering for official business.PROTECTED AREA: An area that normally encompasses all controlled areas within the security protected area fence.HOSTILE FORCE: Any individuals who are engaged in a determined assault, overtly or by stealth and deception, equipped with suitable weapons capable of killing, maiming, or causing destruction.

Month 20XX DR 3-135 EP-AA-1004 (Revision XX)

Dresden Annex Exelon Nuclear RECOGNITION CATEGORY HAZARDS AND OTHER CONDITIONS AFFECTING PLANT SAFETY HA1 (cont)Basis (cont): This IC addresses the occurrence of a HOSTILE ACTION within the OWNER CONTROLLED AREA or notification of an aircraft attack threat. This event will require rapid response and assistance due to the possibility of the attack progressing to the PROTECTED AREA, or the need to prepare the plant and staff for a potential aircraft impact.Timely and accurate communications between Security Shift Supervision and the Control Room is essential for proper classification of a security-related event.Security plans and terminology are based on the guidance provided by NEI 03-12, Template for the Security Plan, Training and Qualification Plan, Safeguards Contingency Plan [and Independent Spent Fuel Storage Installation Security Program].As time and conditions allow, these events require a heightened state of readiness by the plant staff and implementation of onsite protective measures (e.g., evacuation, dispersal or sheltering).

The Alert declaration will also heighten the awareness of Offsite Response Organizations, allowing them to be better prepared should it be necessary to consider further actions.This IC does not apply to incidents that are accidental events, acts of civil disobedience, or otherwise are not a HOSTILE ACTION perpetrated by a HOSTILE FORCE.Examples include the crash of a small aircraft, shots from hunters, physical disputes between employees, etc. Reporting of these types of events is adequately addressed by other EALs, or the requirements of 10 CFR § 73.71 or 10 CFR § 50.72.EAL #1 Basis Addresses the threat from the impact of an aircraft on the plant, and the anticipated arrival time is within 30 minutes. The intent of this EAL is to ensure that threat-related notifications are made in a timely manner so that plant personnel and OROs are in a heightened state of readiness.

This EAL is met when the threat-related information has been validated in accordance with DOA 0010-18, Escalated Security Event/Hostile Force Intrusion.

EAL #2 Basis Is applicable for any HOSTILE ACTION occurring, or that has occurred, in the OWNER CONTROLLED AREA. This includes any action directed against an ISFSI that is located outside the plant PROTECTED AREA.The NRC Headquarters Operations Officer (HOO) will communicate to the licensee if the threat involves an aircraft.

The status and size of the plane may be provided by NORAD through the NRC.Month 20XX DR 3-136 EP-AA-1004 (Revision XX)

Dresden Annex Exellon Nuclear RECOGNITION CATEGORY HAZARDS AND OTHER CONDITIONS AFFECTING PLANT SAFETY HAI (cont)Basis (cont): In some cases, it may not be readily apparent if an aircraft impact within the OWNER CONTROLLED AREA was intentional (i.e., a HOSTILE ACTION). It is expected, although not certain, that notification by an appropriate Federal agency to the site would clarify this point. In this case, the appropriate federal agency is intended to be NORAD, FBI, FAA or NRC. The emergency declaration, including one based on other ICs/EALs, should not be unduly delayed while awaiting notification by a Federal agency.Escalation of the emergency classification level would be via IC HS1.Basis Reference(s):

1. NEI 99-01 Rev 6, HA1 2. Station Security Plan -Appendix C 3. DOA 0010-18, Escalated Security Event/Hostile Force Intrusion Month 20XX DR 3-137 EP-AA-1004 (Revision XX)

Annov MLwv~nn on nrl-Lmr-* ~ *

• F* ** *~St ~ ~. ...t. -~RECOGNITION CATEGORY HAZARDS AND OTHER CONDITIONS AFFECTING PLANT SAFETY HU1 Initiating Condition:

Confirmed SECURITY CONDITION or threat.Operating Mode Applicability:

1, 2,3,4,5, D Emergency Action Level (EAL): 1. Notification of a credible security threat directed at the site as determined per SY-AA-1 01-132, Security Assessment and Response to Unusual Activities.

OR 2. A validated notification from the NRC providing information of an aircraft threat.OR 3. Notification by the Security Force of a SECURITY CONDITION that does not involve a HOSTILE ACTION.Basis: SECURITY CONDITION:

Any Security Event as listed in the approved security contingency plan that constitutes a threat/compromise to site security, threat/risk to site personnel, or a potential degradation to the level of safety of the plant. A SECURITY CONDITION does not involve a HOSTILE ACTION SAFETY SYSTEM: A system required for safe plant operation, cooling down the plant and/or placing it in the cold shutdown condition, including the ECCS. These are typically systems classified as safety-related.

HOSTILE ACTION: An act toward a NPP or its personnel that includes the use of violent force to destroy equipment, take HOSTAGES, and/or intimidate the licensee to achieve an end. This includes attack by air, land, or water using guns, explosives, PROJECTILEs, vehicles, or other devices used to deliver destructive force. Other acts that satisfy the overall intent may be included.

HOSTILE ACTION should not be construed to include acts of civil disobedience or felonious acts that are not part of a concerted attack on the NPP. Non-terrorism-based EALs should be used to address such activities (i.e., this may include violent acts between individuals in the owner controlled area).HOSTAGE: A person(s) held as leverage against the station to ensure that demands will be met by the station.PROJECTILE:

An object directed toward a NPP that could cause concern for its continued operability, reliability, or personnel safety.Month 20XX DR 3-138 EP-AA-1004 (Revision XX)

Annexr Dresde~n Annexw FYAlln NuclerIAm RECOGNITION CATEGORY HAZARDS AND OTHER CONDITIONS AFFECTING PLANT SAFETY HUI (cont)Basis (cont): This IC addresses events that pose a threat to plant personnel or SAFETY SYSTEM equipment, and thus represent a potential degradation in the level of plant safety.Security events which do not meet one of these EALs are adequately addressed by the requirements of 10 CFR § 73.71 or 10 CFR § 50.72. Security events assessed as HOSTILE ACTIONS are classifiable under ICs HA1, HS1 and HG1.Timely and accurate communications between Security Shift Supervision and the Control Room is essential for proper classification of a security-related event.Classification of these events will initiate appropriate threat-related notifications to plant personnel and OROs.Security plans and terminology are based on the guidance provided by NEI 03-12, Template for the Security Plan, Training and Qualification Plan, Safeguards Contingency Plan [and Independent Spent Fuel Storage Installation Security Program].EAL #1 Basis Addresses the receipt of a credible security threat. The credibility of the threat is assessed in accordance with SY-AA-101-132.

EAL #2 Basis Addresses the threat from the impact of an aircraft on the plant. The NRC Headquarters Operations Officer (HOO) will communicate to the licensee if the threat involves an aircraft.

The status and size of the plane may also be provided by NORAD through the NRC. Validation of the threat is performed in accordance with DOA 0010-18, Escalated Security Event/Hostile Force Intrusion EAL #3 Basis References Security Force because these are the individuals trained to confirm that a security event is occurring or has occurred.

Training on security event confirmation and classification is controlled due to the nature of Safeguards and 10 CFR § 2.39 information.

Escalation of the emergency classification level would be via IC HA1.Basis Reference(s):

1. NEI 99-01 Rev 6, HU1 2. SY-AA-1 01-132, Security Assessment and Response to Unusual Activities

3. Station Security Plan -Appendix C 4. NRC Safeguards Advisory 10/6/01 5. Letter from Mr. B. A. Boger (NRC) to Ms. Lynette Hendricks (NEI) dated 2/4/02 6. DOA 0010-18, Escalated Security Event/Hostile Force Intrusion Month 20XX DR 3-139 EP-AA-1004 (Revision XX)

Dresden Annex Exelon Nuclear Dresden Annex Exelon Nuclear RECOGNITION CATEGORY HAZARDS AND OTHER CONDITIONS AFFECTING PLANT SAFETY HS2 Initiating Condition:

Inability to control a key safety function from outside the Control Room.Operating Mode Applicability:

1, 2, 3, 4, 5, D Emergency Action Level (EAL): Note:* The Emergency Director should declare the event promptly upon determining that the applicable time has been exceeded, or will likely be exceeded.1. A Control Room evacuation has resulted in plant control being transferred from the Control Room to alternate locations per DSSP 0100-CR, Hot Shutdown Procedure-Control Room Evacuation.

AND 2. Control of ANY Table H1 key safety function is not reestablished in < 30 minutes.Table HI Safety Functions* Reactivity Control (ability to shut down the reactor and keep it shutdown)* RPV Water Level (ability to cool the core)* RCS Heat Removal (ability to maintain heat sink)Basis: The time period to establish control of the plant starts when either: a. Control of the plant is no longer maintained in the Main Control Room OR b. The last Operator has left the Main Control Room.This IC addresses an evacuation of the Control Room that results in transfer of plant control to alternate locations, and the control of a key safety function cannot be reestablished in a timely manner. The failure to gain control of a key safety function following a transfer of plant control to alternate locations is a precursor to a challenge to any fission product barriers within a relatively short period of time.Month 20XX DR 3-140 EP-AA-1004 (Revision XX)

Dresden Annex Exellon Nuclear RECOGNITION CATEGORY HAZARDS AND OTHER CONDITIONS AFFECTING PLANT SAFETY HS2 (cont)Basis (cont): The determination of whether or not "control" is established at the remote safe shutdown location(s) is based on Emergency Director judgment.

The Emergency Director is expected to make a reasonable, informed judgment within 30 minutes whether or not the operating staff has control of key safety functions from the remote safe shutdown location(s).

Escalation of the emergency classification level would be via IC FG1 or CG6.Basis Reference(s):

1. NEI 99-01, Rev 6 HS6 2. DSSP 0100-CR, Hot Shutdown Procedure

-Control Room Evacuation Month 20XX DR 3-141 EP-AA-1004 (Revision XX)

Dresden Annex Exelon Nuclear RECOGNITION CATEGORY HAZARDS AND OTHER CONDITIONS AFFECTING PLANT SAFETY HA2 Initiating Condition:

Control Room evacuation resulting in transfer of plant control to alternate locations.

Operating Mode Applicability:

1,2,3, 4,5, D Emergency Action Level (EAL): A Control Room evacuation has resulted in plant control being transferred from the Control Room to alternate locations per DSSP 0100-CR, Hot Shutdown Procedure

-Control Room Evacuation.

Basis: This IC addresses an evacuation of the Control Room that results in transfer of plant control to alternate locations outside the Control Room. The loss of the ability to control the plant from the Control Room is considered to be a potential substantial degradation in the level of plant safety.Following a Control Room evacuation, control of the plant will be transferred to alternate shutdown locations.

The necessity to control a plant shutdown from outside the Control Room, in addition to responding to the event that required the evacuation of the Control Room, will present challenges to plant operators and other on-shift personnel.

Activation of the ERO and emergency response facilities will assist in responding to these challenges.

Escalation of the emergency classification level would be via IC HS2.Basis Reference(s):

1. NEI 99-01, Rev 6 HA6 2. DSSP 0100-CR, Hot Shutdown Procedure

-Control Room Evacuation Month 20XX DR 3-142 EP-AA-1004 (Revision XX)

Dresden Annex Exelon Nuclear RECOGNITION CATEGORY HAZARDS AND OTHER CONDITIONS AFFECTING PLANT SAFETY HU3 Initiating Condition:

FIRE potentially degrading the level of safety of the plant.Operating Mode Applicability:

1, 2, 3, 4, 5, D Emergency Action Level (EAL): Note: 9 The Emergency Director should declare the event promptly upon determining that the applicable time has been exceeded, or will likely be exceeded.1. A FIRE in ANY Table H2 area is not extinguished in < 15-minutes of ANY of the following FIRE detection indications: " Report from the field (i.e., visual observation)

• Receipt of multiple (more than 1) fire alarms or indications

• Field verification of a single fire alarm Table H2 Vital Areas" Reactor Building (when inerted the Drywell is exempt)* Aux Electric Room* Control Room* Unit and Shared Emergency Diesel Generator Rooms* 4KV ECCS Switchgear Area (includes Bus 23, 24, 33 and 34 only)* CRD & CCSW Pump Rooms* Turbine Building Cable Tunnel* Turbine Building Safe Shutdown Areas as follows: 1 B- Train Control Room HVAC Room* Battery Rooms and DC Distribution Areas 1) U2 Battery Room (includes DC switchgear, 125V, and 250V battery rooms)2) U3 Battery Room, Battery Cage area, and U3 Battery Charger Room(all on U3 TB 538)* Crib House OR 2. a. Receipt of a single fire alarm in ANY Table H2 area (i.e., no other indications of a FIRE).AND b. The existence of a FIRE is not verified in < 30 minutes of alarm receipt.OR Month 20XX DR 3-143 EP-AA-1004 (Revision XX)

Dresden Annex Dlresden Annex Fv.vIn i.Ir~vA.RECOGNITION CATEGORY HAZARDS AND OTHER CONDITIONS AFFECTING PLANT SAFETY HU3 (cont)Emergency Action Level (EAL) (cont): 3. A FIRE within the plant PROTECTED AREA not extinguished in < 60-minutes of the initial report, alarm or indication.

OR 4. A FIRE within the plant PROTECTED AREA that requires firefighting support by an offsite fire response agency to extinguish.

Basis: FIRE: Combustion characterized by heat and light. Sources of smoke such as slipping drive belts or overheated electrical equipment do not constitute FIRES. Observation of flame is preferred but is NOT required if large quantities of smoke and heat are observed.PROTECTED AREA: An area that normally encompasses all controlled areas within the security protected area fence.This IC addresses the magnitude and extent of FIRES that may be indicative of a potential degradation of the level of safety of the plant.EAL #1 Basis The intent of the 15-minute duration is to size the FIRE and to discriminate against small FIRES that are readily extinguished (e.g., smoldering waste paper basket). In addition to alarms, other indications of a FIRE could be a drop in fire main pressure, automatic activation of a suppression system, etc.Upon receipt, operators will take prompt actions to confirm the validity of an initial fire alarm, indication, or report. For EAL assessment purposes, the emergency declaration clock starts at the time that the initial alarm, indication, or report was received, and not the time that a subsequent verification action was performed.

Similarly, the fire duration clock also starts at the time of receipt of the initial alarms, indication or report.EAL #2 Basis This EAL addresses receipt of a single fire alarm, and the existence of a FIRE is not verified (i.e., proved or disproved) within 30-minutes of the alarm. Upon receipt, operators will take prompt actions to confirm the validity of a single fire alarm. For EAL assessment purposes, the 30-minute clock starts at the time that the initial alarm was received, and not the time that a subsequent verification action was performed.

Month 20XX DR 3-144 EP-AA-1004 (Revision XX) nro*arian Annay P:vgmltnn N, ig--a-r flr~~rI~n Ann~v FvaIr~n Mu.~I~~r RECOGNITION CATEGORY HAZARDS AND OTHER CONDITIONS AFFECTING PLANT SAFETY HU3 (cont)Basis (cont): A single fire alarm, absent other indication(s) of a FIRE, may be indicative of equipment failure or a spurious activation, and not an actual FIRE. For this reason, additional time is allowed to verify the validity of the alarm. The 30-minute period is a reasonable amount of time to determine if an actual FIRE exists; however, after that time, and absent information to the contrary, it is assumed that an actual FIRE is in progress.If an actual FIRE is verified by a report from the field, then EAL #1 is immediately applicable, and the emergency must be declared if the FIRE is not extinguished within 15-minutes of the report. If the alarm is verified to be due to an equipment failure or a spurious activation, and this verification occurs within 30-minutes of the receipt of the alarm, then this EAL is not applicable and no emergency declaration is warranted.

EAL #3 Basis In addition to a FIRE addressed by EAL #1 or EAL #2, a FIRE within the plant PROTECTED AREA not extinguished within 60-minutes may also potentially degrade the level of plant safety EAL #4 Basis If a FIRE within the plant PROTECTED AREA is of sufficient size to require a response by an offsite firefighting agency (e.g., a local town Fire Department), then the level of plant safety is potentially degraded.

The dispatch of an offsite firefighting agency to the site requires an emergency declaration only if it is needed to actively support firefighting efforts because the fire is beyond the capability of the Fire Brigade to extinguish.

Declaration is not necessary if the agency resources are placed on stand-by, or supporting post-extinguishment recovery or investigation actions.Basis-Related Requirements from Appendix R Appendix R to 10 CFR 50, states in part: Criterion 3 of Appendix A to this part specifies that "Structures, systems, and components important to safety shall be designed and located to minimize, consistent with other safety requirements, the probability and effect of fires and explosions."When considering the effects of fire, those systems associated with achieving and maintaining safe shutdown conditions assume major importance to safety because damage to them can lead to core damage resulting from loss of coolant through boil-off.Month 20XX DR 3-145 EP-AA-1004 (Revision XX)

Dresden Annex Exelon Nuclear RECOGNITION CATEGORY HAZARDS AND OTHER CONDITIONS AFFECTING PLANT SAFETY HU3 (cont)Basis (cont): Because fire may affect safe shutdown systems and because the loss of function of systems used to mitigate the consequences of design basis accidents under post-fire conditions does not per se impact public safety, the need to limit fire damage to systems required to achieve and maintain safe shutdown conditions is greater than the need to limit fire damage to those systems required to mitigate the consequences of design basis accidents.

In addition, Appendix R to 10 CFR 50, requires, among other considerations, the use of 1-hour fire barriers for the enclosure of cable and equipment and associated non-safety circuits of one redundant train (G.2.c). As used in EAL #2, the 30-minutes to verify a single alarm is well within this worst-case 1-hour time period.Depending upon the plant mode at the time of the event, escalation of the emergency classification level would be via IC CA2 or MA5.Basis Reference(s):

1. NEI 99-01, Rev 6 HU4 2. UFSAR 3.2, Classification of Structures, Components, and Systems 3. UFSAR 3.5.3 4. General Arrangement Drawings M-3, M-4, M-4A, M-5 and M-10 Month 20XX DR 3-146 EP-AA-1004 (Revision XX)

Dresden Annex Exelon Nuclear RECOGNITION CATEGORY HAZARDS AND OTHER CONDITIONS AFFECTING PLANT SAFETY HU4 Initiating Condition:

Seismic event greater than OBE levels.Operating Mode Applicability:

1,2,3,4,5, D Emergency Action Level (EAL): 1. Control Room personnel feel an actual or potential seismic event.AND 2. The occurrence of a seismic event is confirmed in a manner deemed appropriate by the Shift Manager or Emergency Director.Basis: This IC addresses a seismic event that results in accelerations at the plant site greater than those specified for an Operating Basis Earthquake (OBE)1.An earthquake greater than an OBE but less than a Safe Shutdown Earthquake (SSE)2 should have no significant impact on safety-related systems, structures and components; however, some time may be required for the plant staff to ascertain the actual post-event condition of the plant (e.g., performs walk-downs and post-event inspections).

Given the time necessary to perform walk-downs and inspections, and fully understand any impacts, this event represents a potential degradation of the level of safety of the plant.Event verification with external sources should not be necessary during or following an OBE. Earthquakes of this magnitude should be readily felt by on-site personnel and recognized as a seismic event (e.g., typical lateral accelerations are in excess of 0.08g).EAL #2 is included to ensure that a declaration does not result from felt vibrations caused by a non-seismic source (e.g., a dropped load). The Shift Manager or Emergency Director may seek external verification if deemed appropriate (e.g., call to USGS, check internet source, etc.) however, the verification action must not preclude a timely emergency declaration.

This EAL wording recognizes that it may cause the site to declare an Unusual Event while another site similarly affected but with readily available OBE indications in the Control Room, may not.Depending upon the plant mode at the time of the event, escalation of the emergency classification level would be via IC CA2 or MA5.1 An OBE is vibratory ground motion for which those features of a nuclear power plant necessary for continued operation without undue risk to the health and safety of the public will remain functional.

An SSE is vibratory ground motion for which certain (generally, safety-related) structures, systems, and components must be designed to remain functional.

Month 20XX DR 3-147 EP-AA-1004 (Revision XX)

Dresden Annex Exelon Nuclear RECOGNITION CATEGORY HAZARDS AND OTHER CONDITIONS AFFECTING PLANT SAFETY HU4 (cont)Basis Reference(s):

1. NEI 99-01, Rev 6 HU2 2. DOA 0010-03, Earthquakes Month 20XX DR 3-148 EP-AA-1004 (Revision XX)

Dresden Annex Dresen AnexExelon Nuclear RECOGNITION CATEGORY HAZARDS AND OTHER CONDITIONS AFFECTING PLANT SAFETY HA5 Initiating Condition:

Gaseous release impeding access to equipment necessary for normal plant operations, cooldown or shutdown.Operating Mode Applicability:

1, 2, 3, 4, 5, D Emergency Action Level (EAL): Note:* If the equipment in the listed room or area was already inoperable, or out of service, before the event occurred, then no emergency classification is warranted.

1. Release of a toxic, corrosive, asphyxiant or flammable gas in a Table H3 area.Table H3 Areas with Entry Related Mode Applicability Area Entry Related Mode Applicability Reactor Building*

Modes 3, 4, and 5*Areas required to establish shutdown cooling AND 2. Entry into the room or area is prohibited or impeded Basis: This IC addresses an event involving a release of a hazardous gas that precludes or impedes access to equipment necessary to transition the plant from normal plant operation to cooldown and shutdown as specified in normal plant procedures.

This condition represents an actual or potential substantial degradation of the level of safety of the plant.Table H3 is a list of plant rooms or areas with entry-related mode applicability that contain equipment which require a manual/local action necessary to transition the plant from normal plant operation to cooldown and shutdown as specified in normal operating procedures (establish shutdown cooling), where if this action is not completed the plant would not be able to attain and maintain cold shutdown.

This Table does not include rooms or areas for which entry is required solely to perform actions of an administrative or record keeping nature (e.g., normal rounds or routine inspections).

Month 20XX DR 3-149 EP-AA-1 004 (Revision XX)

Dry.dAn AnnRx Dresden Annex Fvalnn NJiiear~I RECOGNITION CATEGORY HAZARDS AND OTHER CONDITIONS AFFECTING PLANT SAFETY HA5 (cont)Basis (cont): This Table does not include the Control Room since adequate engineered safety/design features are in place to preclude a Control Room evacuation due to the release of a hazardous gas.An Alert declaration is warranted if entry into the affected room/area is, or may be, procedurally required during the plant operating mode in effect and the gaseous release preclude the ability to place shutdown cooling in service. The emergency classification is not contingent upon whether entry is actually necessary at the time of the release.Evaluation of the IC and EAL do not require atmospheric sampling; it only requires the Emergency Director's judgment that the gas concentration in the affected room/area is sufficient to preclude or significantly impede procedurally required access. This judgment may be based on a variety of factors including an existing job hazard analysis, report of ill effects on personnel, advice from a subject matter expert or operating experience with the same or similar hazards. Access should be considered as impeded if extraordinary measures are necessary to facilitate entry of personnel into the affected room/area (e.g., requiring use of protective equipment, such as SCBAs, that is not routinely employed).

An emergency declaration is not warranted if any of the following conditions apply." The plant is in an operating mode different than the mode specified for the affected room/area (i.e., entry is not required during the operating mode in effect at the time of the gaseous release).

For example, the plant is in Mode 1 when the gaseous release occurs, and the procedures used for normal operation, cooldown and shutdown do not require entry into the affected room until Mode 4." The gas release is a planned activity that includes compensatory measures which address the temporary inaccessibility of a room or area (e.g., fire suppression system testing)." The action for which room/area entry is required is of an administrative or record keeping nature (e.g., normal rounds or routine inspections).

• The access control measures are of a conservative or precautionary nature, and would not actually prevent or impede a required action.An asphyxiant is a gas capable of reducing the level of oxygen in the body to dangerous levels. Most commonly, asphyxiants work by merely displacing air in an enclosed environment.

This reduces the concentration of oxygen below the normal level of around 19%, which can lead to breathing difficulties, unconsciousness or even death.This EAL does not apply to firefighting activities that generate smoke, that automatically or manually activate a fire suppression system in an area, or to intentional inerting of containment.

Escalation of the emergency classification level would be via Recognition Category R, C or F ICs.Month 20XX DR 3-150 EP-AA-1004 (Revision XX)

Dresden Annex Exellon Nuclear RECOGNITION CATEGORY HAZARDS AND OTHER CONDITIONS AFFECTING PLANT SAFETY HA5 (cont)Basis Reference(s):

1. NEI 99-01, Rev 6 HA5 2. UFSAR 3.5.3 3. UFSAR 3.2 4. General Arrangement Drawings M-3, M-4, M-4A, M-5 and M-10 Month 20XX DR 3-151 EP-AA-1004 (Revision XX)

Dresden Annex Exelon Nuclear RECOGNITION CATEGORY HAZARDS AND OTHER CONDITIONS AFFECTING PLANT SAFETY HU6 Initiating Condition:

Hazardous Event Operating Mode Applicability:

1, 2,3,4,5, D Emergency Action Level (EAL): Note: EAL #4 does not apply to routine traffic impediments such as fog, snow, ice, or vehicle breakdowns or accidents.

1. Tornado strike within the PROTECTED AREA.OR 2. Internal room or area flooding of a magnitude sufficient to require manual or automatic electrical isolation of a SAFETY SYSTEM component required by Technical Specification for the current operating mode.OR 3. Movement of personnel within the PROTECTED AREA is impeded due to an offsite event involving hazardous materials (e.g., an offsite chemical spill or toxic gas release).OR 4. A hazardous event that results in on-site conditions sufficient to prohibit the plant staff from accessing the site via personal vehicles.OR 5. Abnormal River level, as indicated by EITHER: a. High river level > 509 ft.OR b. Low river level <501 ft. 6 inches.Basis: PROTECTED AREA: An area that normally encompasses all controlled areas within the security protected area fence.SAFETY SYSTEM: A system required for safe plant operation, cooling down the plant and/or placing it in the cold shutdown condition, including the ECCS. These are typically systems classified as safety-related.

Month 20XX DR 3-152 EP-AA-1004 (Revision XX) pracrian Annoy I=Yalnn N,,r-l,-or fl racrI~n Ann~v FvMnn Mm.rIc~r RECOGNITION CATEGORY HAZARDS AND OTHER CONDITIONS AFFECTING PLANT SAFETY HU6 (cont)Basis (cont): This IC addresses hazardous events that are considered to represent a potential degradation of the level of safety of the plant.EAL #1 Basis Addresses a tornado striking (touching down) within the Protected Area.EAL #2 Basis Addresses flooding of a building room or area that results in operators isolating power to a SAFETY SYSTEM component due to water level or other wetting concerns.Classification is also required if the water level or related wetting causes an automatic isolation of a SAFETY SYSTEM component from its power source (e.g., a breaker or relay trip). To warrant classification, operability of the affected component must be required by Technical Specifications for the current operating mode. Manual isolation of power to a SAFETY SYSTEM component as a result of leakage is an event of lesser impact and would be expected to cause small and localized damage. The consequence of this type of event is adequately assessed and addressed in accordance with Technical Specifications.

EAL #3 Basis Addresses a hazardous materials event originating at an offsite location and of sufficient magnitude to impede the movement of personnel within the PROTECTED AREA.EAL #4 Basis Addresses a hazardous event that causes an on-site impediment to vehicle movement and significant enough to prohibit the plant staff from accessing the site using personal vehicles.

Examples of such an event include site flooding caused by a hurricane, heavy rains, up-river water releases, dam failure, etc., or an on-site train derailment blocking the access road.This EAL is not intended apply to routine impediments such as fog, snow, ice, or vehicle breakdowns or accidents, but rather to more significant conditions such as the Hurricane Andrew strike on Turkey Point in 1992, the flooding around the Cooper Station during the Midwest floods of 1993, or the flooding around Ft. Calhoun Station in 2011.Escalation of the emergency classification level would be based on ICs in Recognition Categories R, F, M, H or C.Month 20XX DR 3-153 EP-AA-1004 (Revision XX)

Annoyv Pvgmlrn Ki ,Al-or RECOGNITION CATEGORY HAZARDS AND OTHER CONDITIONS AFFECTING PLANT SAFETY HU6 (cont)Basis (cont):..EAL #5 Basis: The possible maximum flood (PMF) produces a peak flood to 528 ft el. This is significantly above the grade elevation (517 ft) and the high river water level threshold, which is the lowest opening leading to safety-related equipment (509 ft el.). When this level is reached, the reactors are shutdown, the drywells are deinerted, and the vessels are flooded and cooled to cold shutdown conditions as quickly as possible.

If the water level reaches 513 ft el., reactor cooldown is transferred to the Isolation Condensers, which thereafter maintain a safe shutdown condition until the flood waters recede and plant startup can be initiated.

Minimum river water levels to assure pump suction are:* Circulating Water Pumps: 490 ft el." Service Water Pumps: 494 ft el." CCSW Pumps: 501 ft 6 in." Unit 2/3 Fire Pump: 498 ft 6 in.The low river water level threshold (501 ft. 6 in.) is based on the most limiting pump suction requirement (CCSW).Escalation of the emergency classification level would be based on ICs in Recognition Categories R, F, M, H or C.Basis .Reference(s):

..... ........." 1. NEI 99-01, Rev 6 HU3 2. DOA 0010-01 Dresden Lock and Dam Failure 3. DOA 0010-04 Floods 4. DOA 0010-02 Tornado Warning/Severe Winds 5. DOA-0010-12, Toxic Gas/Chemical Release from Nearby Chemical Facilities Month 20XX DR 3-154 EP-AA-1 004 (Revision XX)

AnnAx Dlresden Annex Fva'inn Nmmr-Ionr RECOGNITION CATEGORY HAZARDS AND OTHER CONDITIONS AFFECTING PLANT SAFETY HG7 Initiating Condition:

Other conditions exist which in the judgment of the Emergency Director warrant declaration of a GENERAL EMERGENCY.

Operating Mode Applicability:

1, 2, 3, 4, 5, D Emergency Action Level (EAL): Other conditions exist which in the judgment of the Emergency Director indicate that events are in progress or have occurred which involve actual or IMMINENT substantial core degradation or melting with potential for loss of containment integrity or HOSTILE ACTION that results in an actual loss of physical control of the facility.

Releases can be reasonably expected to exceed EPA Protective Action Guideline exposure levels offsite for more than the immediate site area.Basis: IMMINENT:

The trajectory of events or conditions is such that an EAL will be met within a relatively short period of time regardless of mitigation or corrective actions.HOSTILE ACTION: An act toward a NPP or its personnel that includes the use of violent force to destroy equipment, take HOSTAGES, and/or intimidate the licensee to achieve an end. This includes attack by air, land, or water using guns, explosives, PROJECTILEs, vehicles, or other devices used to deliver destructive force. Other acts that satisfy the overall intent may be included.

HOSTILE ACTION should not be construed to include acts of civil disobedience or felonious acts that are not part of a concerted attack on the NPP. Non-terrorism-based EALs should be used to address such activities (i.e., this may include violent acts between individuals in the owner controlled area).HOSTAGE: A person(s) held as leverage against the station to ensure that demands will be met by the station PROJECTILE:

An object directed toward a NPP that could cause concern for its continued operability, reliability, or personnel safety.This IC addresses unanticipated conditions not addressed explicitly elsewhere but that warrant declaration of an emergency because conditions exist which are believed by the Emergency Director to fall under the emergency classification level description for a General Emergency.

Basis Reference(s):

1. NEI 99-01, Rev 6 HG7 Month 20XX DR 3-155 EP-AA-1004 (Revision XX)

Exelon Nuclear Dresden Annex Exelon NuclIear RECOGNITION CATEGORY HAZARDS AND OTHER CONDITIONS AFFECTING PLANT SAFETY HS7 Initiating Condition:

Other conditions exist which in the judgment of the Emergency Director warrant declaration of a SITE AREA EMERGENCY.

Operating Mode Applicability:

1, 2, 3, 4, 5, D Emergency Action Level (EAL): Other conditions exist which in the judgment of the Emergency Director indicate that events are in progress or have occurred which involve actual or likely major failures of plant functions needed for protection of the public or HOSTILE ACTION that results in intentional damage or malicious acts, (1) toward site personnel or equipment that could lead to the likely failure of or, (2) that prevent effective access to equipment needed for the protection of the public. Any releases are not expected to result in exposure levels which exceed EPA Protective Action Guideline exposure levels beyond the site boundary.Basis: HOSTILE ACTION: An act toward a NPP or its personnel that includes the use of violent force to destroy equipment, take HOSTAGES, and/or intimidate the licensee to achieve an end. This includes attack by air, land, or water using guns, explosives, PROJECTILEs, vehicles, or other devices used to deliver destructive force. Other acts that satisfy the overall intent may be included.

HOSTILE ACTION should not be construed to include acts of civil disobedience or felonious acts that are not part of a concerted attack on the NPP. Non-terrorism-based EALs should be used to address such activities (i.e., this may include violent acts between individuals in the owner controlled area).HOSTAGE: A person(s) held as leverage against the station to ensure that demands will be met by the station PROJECTILE:

An object directed toward a NPP that could cause concern for its continued operability, reliability, or personnel safety.This IC addresses unanticipated conditions not addressed explicitly elsewhere but that warrant declaration of an emergency because conditions exist which are believed by the Emergency Director to fall under the emergency classification level description for a Site Area Emergency.

Basis Reference(s):

1. NEI 99-01, Rev 6 HS7 Month 20XX DR 3-156 EP-AA-1004 (Revision XX)

Dresden Annex Exelon Nuclear Dlresden Annex Exelnn Nuclea~r RECOGNITION CATEGORY HAZARDS AND OTHER CONDITIONS AFFECTING PLANT SAFETY HA7 Initiating Condition:

Other conditions exist which in the judgment of the Emergency Director warrant declaration of an ALERT Operating Mode Applicability:

1, 2, 3, 4, 5, D Emergency Action Level (EAL): Other conditions exist which, in the judgment of the Emergency Director, indicate that events are in progress or have occurred which involve an actual or potential substantial degradation of the level of safety of the plant or a security event that involves probable life threatening risk to site personnel or damage to site equipment because of HOSTILE ACTION. Any releases are expected to be limited to small fractions of the EPA Protective Action Guideline exposure levels.Basis: HOSTILE ACTION: An act toward a NPP or its personnel that includes the use of violent force to destroy equipment, take HOSTAGES, and/or intimidate the licensee to achieve an end. This includes attack by air, land, or water using guns, explosives, PROJECTILEs, vehicles, or other devices used to deliver destructive force. Other acts that satisfy the overall intent may be included.

HOSTILE ACTION should not be construed to include acts of civil disobedience or felonious acts that are not part of a concerted attack on the NPP. Non-terrorism-based EALs should be used to address such activities (i.e., this may include violent acts between individuals in the owner controlled area).HOSTAGE: A person(s) held as leverage against the station to ensure that demands will be met by the station PROJECTILE:

An object directed toward a NPP that could cause concern for its continued operability, reliability, or personnel safety.This IC addresses unanticipated conditions not addressed explicitly elsewhere but that warrant declaration of an emergency because conditions exist which are believed by the Emergency Director to fall under the emergency classification level description for an Alert.Basis Reference(s):

1. NEI 99-01, Rev 6 HA7 Month 20XX DR 3-157 EP-AA-1004 (Revision XX)

IDri__dp~n Anniv Dresden Annex Evainn N"rhmnr RECOGNITION CATEGORY HAZARDS AND OTHER CONDITIONS AFFECTING PLANT SAFETY HU7 Initiating Condition:

Other conditions exist which in the judgment of the Emergency Director warrant declaration of an UNUSUAL EVENT.Operating Mode Applicability:

1, 2, 3, 4, 5, D Emergency Action Level (EAL): Other conditions exist which in the judgment of the Emergency Director indicate that events are in progress or have occurred which indicate a potential degradation of the level of safety of the plant or indicate a security threat to facility protection has been initiated.

No releases of radioactive material requiring offsite response or monitoring are expected unless further degradation of safety systems occurs.Basis: This IC addresses unanticipated conditions not addressed explicitly elsewhere but that warrant declaration of an emergency because conditions exist which are believed by the Emergency Director to fall under the emergency classification level description for an UNUSUAL EVENT.Basis Reference(s):

1. NEI 99-01, Rev 6 HU7 Month 20XX DR 3-158 EP-AA-1004 (Revision XX)

Dresden Annex Exelon Nuclear RECOGNITION CATEGORY ISFSI MALFUNCTIONS E-HU1 Initiating Condition Damage to a loaded cask CONFINEMENT BOUNDARY.Operating Mode Applicability:

1,2,3,4,5, D Emergency Action Level (EAL): Damage to a loaded cask CONFINEMENT BOUNDARY as indicated by an on-contact radiation reading: 1. EAST HI-STAR:* > 160 mrem/hr (neutron + gamma) on the top of the Overpack OR 0 > 250 mrem/hr (neutron+

gamma) on the side of the Overpack OR 2. EAST HI-STORM: 0 > 20 mrem/hr (neutron+

gamma) on the top of the Overpack OR* >100 mrem/hr (neutron+

gamma) on the side of the Overpack OR* > 45 mrem/hr (neutron+

gamma) at the inlet and outlet vent ducts of the Overpack OR 3. WEST HI-STORM:* > 40 mremlhr (neutron+

gamma) on the top of the Overpack OR* >100 mrem/hr (neutron+

gamma) on the side of the Overpack, excluding inlet and outlet ducts.Basis: CONFINEMENT BOUNDARY:

The irradiated fuel dry storage cask barrier(s) between areas containing radioactive substances and the environment.

INDEPENDENT SPENT FUEL STORAGE INSTALLATION (ISFSI) : A complex that is designed and constructed for the interim storage of spent nuclear fuel and other radioactive materials associated with spent fuel storage.Month 20XX DR 3-159 EP-AA-1004 (Revision XX)

Dresden Annex Exelon Nuclear RECOGNITION CATEGORY ISFSI MALFUNCTIONS E-HUI (cont).Basis (cont): This IC addresses an event that results in damage to the CONFINEMENT BOUNDARY of a storage cask containing spent fuel. It applies to irradiated fuel that is licensed for dry storage beginning at the point that the loaded storage cask is sealed. The word cask, as used in this EAL, refers to the storage container in use at the site for dry storage of irradiated fuel. The issues of concern are the creation of a potential or actual release path to the environment, degradation of any fuel assemblies due to environmental factors, and configuration changes which could cause challenges in removing the cask or fuel from storage.The existence of "damage" is determined by radiological survey. The technical specification multiple of "2 times", which is also used in Recognition Category R IC RU1, is used here to distinguish between non-emergency and emergency conditions.

The emphasis for this classification is the degradation in the level of safety of the spent fuel cask and not the magnitude of the associated dose or dose rate. It is recognized that in the case of extreme damage to a loaded cask, the fact that the "on-contact" dose rate limit is exceeded may be determined based on measurement of a dose rate at some distance from the cask.Security-related events for ISFSls are covered under ICs HU1 and HAl.Basis Reference(s):

1. NEI 99-01, Rev 6 E-HU1 2. Certificate of Compliance No. 1014 Appendix A, Section 5.7 (WEST HI-STORM)3. Certificate of Compliance No. 1014 Appendix A, Section 3.2.3 (EAST HI-STORM)4. Certificate of Compliance No. 1008 Appendix A, Amendment 2, Section 2.2.1 (EAST HI-STAR)Month 20XX DR 3-160 EP-AA-1004 (Revision XX)