ML21145A072
| ML21145A072 | |
| Person / Time | |
|---|---|
| Site: | Indian Point  |
| Issue date: | 05/10/2021 |
| From: | Norton G Entergy Nuclear Operations |
| To: | Document Control Desk, Office of Nuclear Reactor Regulation |
| References | |
| EP-21-0007 IP-EP-AD-13, Rev. 22 | |
| Download: ML21145A072 (310) | |
Text
Indian Point Energy Center **CONTROLLED DOCUMENT Document Control TRANSMITTAL.,
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~uchanan, NY 10511 TO: DISTRIBUTION D.t\TE: 5/10/2021
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IP-EP-AD-13 REVISION *22 AXJ-/5
,/lJi I\
EFFECTIVE DATE: 5/17/2021 RECEIPT OF THE ABOVE LISTED DOCUMENT(S) IS HEREBY ACKNOWLEDGED. I CERTIFY THAT ALL .
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IPEC NON-QUALITY
-===* Entergy EMERGENCY RELATED IP-EP-AD13 Revision 22 PLAN PROCEDURE ADMINISTRATIVE 1-------+-------,------1------,--~
PROCEDURES REFERENCE USE Page 1 of 309 CONTROLLED IPEC Emergency Action Level Technical Bases Prepared by: Gary A Norton
¢2~ *1lzz ./20~ 1 Print Name Date Approval: Frank J. Mitchell Print Name d-#1~
' Signature
~t7/4!KJc;J.;
Date This procedure excluded from further EN~Ll~100 reviews.
Effective Date: May 17, 2021
IPEC NON-QUA LITY EMERGENCY RELATED IP-EP-AD13 Revision 22 PLAN PROCEDURE ADMINISTRATIVE 1 - - - - - - - - - + - - - - . - - - - - - + - - - - - r - - - - i PROCEDURES REFERENCE USE Page 2 of 309 Table of Contents Section Page 1.0 PURPOSE ......................................................................................................... 4 2.0 DISCUSSION .................................................................................................... 4 2.1 Background ............................................................................................ 4 2.2 Fission Product Barriers ......................................................................... 5 2.3 Emergency Classification Based on Fission Product Barrier Degradation ................................................................................ 6 2.4 EAL Relationship to EOPs ...................................................................... 6 2.5 Symptom-Based vs. Event-Based Approach .......................................... 7 2.6 EAL Organization ................................................................................... 7
- 2. 7 Technical Bases Information .................................................................. 1O 2.8 Operating Mode Applicability .................................................................. 12 2.9 Unit Specific Data ................................................................................... 13 2.10 Validation of Indications, Reports and Conditions .................................. 13 2.11 Planned vs. Unplanned Events ............................................................... 13 2.12 Classifying Transient Events .................................................................. 14
- 2.13 Imminent EAL Thresholds ...................................................................... 14 2.14 Treatment of Multiple Events .................................................................. 15 2.15 Emergency Classification Downgrading and Termination ...................... 15
3.0 REFERENCES
.................................................................................................. 16 3.1 Developmental ........................................................................................ 16 3.2 Implementing .......................................................................................... 16 3.3 Commitments ......................................................................................... 16 4.0 DEFINITIONS & ACRONYMS ........................................................................... 17 5.0 RESPONSIBILITIES ......................................................................................... 23 6.0 IPEC-TO-NEI 99-01 EAL CROSS REFERENCE ............................................... 24
IPEC NON-QU ALITY EMERGENCY RELATED IP-EP-AD13 Revision 22 PLAN PROCEDURE ADMINISTRATIVE ..------+----,----+----,-----.----1 PROCEDURES REFERENCE USE Page 3 of 309 7.0 ATTACHMENTS ............................................................................................... 28 7 .1 Attachment 1 - EAL Bases ..................................................................... 29 Category A Abnormal Rad Release I Rad Effluent. ....................... 29 Category C Cold Shutdown I Refueling System Malfunction ......... 70 Category H Hazards ..................................................................... 133 Category S System Malfunction ................................................... 191 Category E ISFSI ......................................................................... 242 Category F Fission Product Barrier Degradation .......................... 245 7 .2 Attachment 2 Fission Product Barrier Loss/ Potential Loss Matrix and Bases ....................................................... 256
IPEC NON-QU ALITY EMERG ENCY RELATED IP-EP-A D13 Revisio n 22 PLAN PROCEDURE ADMIN ISTRAT IVE 1--- ----- ---~ --+- ----. .....- --1 PROCE DURES REFERENCE USE Page 4 of 309 Emergency Action Level Technical Bases 1.0 PURPOSE This docume nt provides an explanation and rationale for each Emerge ncy Action Level (EAL) included in the EAL Upgrad e Project for Indian Point Energy Center (IPEC). It should be used to facilitate review of the IPEC EALs and provide historical documentation for future reference.
Decision-makers responsible for implementation of IP-EP-120, Emerge ncy Classifi cation, may use this docume nt as a technical reference in support of EAL interpretation. This informa tion may assist the Emerge ncy Director in making classifications, particularly those involvin g judgme nt or multiple events. The basls information may also be useful in training
, for explaining event classifications to off-site officials, and would facilitate regulato ry review and approval of the classification sc!,em::;.
The expectation is that emerge ncy dassir1cations are to be ffiade as soon as conditio ns are presen t and recognizable for rhe classification, but within 15 minutes or less in all cases of conditions present. Use of this docume nt for assistance is not intended to delay the emerge ncy classification.
2.0 DISCUSSION
2.1 Background
EALs are the plant-specific indications, conditions or instrument readings that are utilized to classify emerge ncy conditions defined in the Entergy IPEC Emerge ncy Plan.
In 1992, the NRG endorsed NUMARC/NESP-007 "Metho dology for Develo pment of Emerge ncy Action Levels" as an alternative to NUREG -0654 EAL guidance.
NEI 99-01 (NUMA RC/NE SP-007 ) Revision 5 represents the most recently formally endorse d methodology. Enhanc ements over earlier revisions included:
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PROCED URES REFERENCE USE Page I 5 of I 309 o Consolidating the system malfunction initiating conditions and example emergen cy action levels which address conditions that may be postulated to occur during plant shutdown conditions.
- Initiating conditions and example emergency action levels that fully address condition s that may be postulated to occur at permanently Defueled Stations and Indepen dent Spent Fuel Storage Installations (ISFSls).
- Simplifying the fission product barrier EAL threshold for a Site Area Emergency.
Using NEI 99-01 Rev. 5, !PEC conducted an EAL implementation upgrade project that produced the EALs discussed he,ein.
2.2 Fission Product Barriers Many of the EALs derived from the NEI methodology are fission product barrier based. That is, the conditions that define the EALs are based upon loss or potential loss of one or more of the three fission product barriers. "Loss" and "Potential Loss" signify the relative damage and threat of damage to the barrier. "Loss" means the barrier no longer assures containment of radioactive materials; "potential loss" infers an increased probability of barrier loss and decreased certainty of maintaining the barrier.
The primary fission product barriers are:
A. Fuel Clad (FC): Zirconium tubes which house the ceramic uranium oxide pellets along with the end plugs which are welded into each end of the fuel rods comprise the FC barrier.
B. Reactor Coolant System (RCS): The RCS is comprised of the reactor vessel shell, vessel head, vessel nozzles and penetrations and all primary systems directly connected to the reactor vessel up to the first containment isolation valve.
C. Containment (CNMT): The containment is comprised of the vapor containment structure and all isolation valves required to maintain containment integrity under accident conditions.
IPEC NON-QUA LITY EMERGENCY RELATED IP-EP-AD13 Revision 22 PLAN PROCEDURE ADMINISTRATIVE 1---------1----~---+----~----1 PROCEDURES REFERENCE USE Page 6 of 309 2.3 Emergency Classification Based on Fission Product Barrier Degradation The following criteria are the bases for event classification related to fission product barrier loss or potential loss:
Unusual Event:
Any loss or any potential loss of Containment Alert:
Any loss or any potential loss of either Fuel Clad or RCS Site Area Emergency:
Loss or potential loss of any two barriers General Emergency:
Loss of any two barriers and loss or potential loss of third barrier 2.4 EAL Relationship to EOPs Where possible, the EALs have been made consistent with and utilize the conditions defined in the IPEC Critical Safety Function Status Trees (CSFSTs). While the symptoms that drive operator actions specified in the CSFSTs are not indicative of al! possible conditions which warrant emergency classification, they do define the symptoms, independent of initiating events, for which reactor plant safety and/or fission product barrier integrity are threatened.
Where these symptoms are clearly representative of one of the NEI Initiating Conditions, they have been utilized as an EAL. This permits rapid classification of emergency situations based on plant conditions without the need for additional evaluation or event diagnosis. Although some of the EALs presented here are based on conditions defined in the CSFSTs, classification of emergencies using these EALs is not dependent upon Emergency Operating Procedures (EOPs) entry or execution. The EALs can be utilized independently or in conjunction with the EOPs.
IPEC NON-QU ALITY EMERG ENCY RELATED IP-EP-AD13 Revision 22 PLAN PROCEDURE ADMINISTRATIVE i------------.---+----,----1 PROCEDURES REFERENCE USE Page 7 of 309 2.5 Symptom-Based vs. Event-Based Approach To the extent possible, the EALs are symptom-based. That is, the action level thresho ld is defined by values of key plant operating parameters that identify emergency or potentia l
emergency conditions. This approach is appropriate because it allows the full scope of variations in the types of events to be classified as emergencies. However, a purely symptom-based approach is not sufficient to address all events for which emergency classific ation is appropriate. Particular events to which no predetermined symptoms can be ascribe d have also been utilized as EALs since they may be indicative of potentially more serious conditio ns not yet fully realized.
2.6 EAL Organization The IPEG EAL scheme includes the following features:
- Division of the ~AL set into three broad groups:
o EALs applicable under all plant operating modes - This group would be reviewe d
by the EAL-user any time emergency classification is considered.
o EALs applicable only under hot operating modes - This group would only be reviewed by the EAL-user when the plant is in Hot Shutdown, Startup /Hot Standby, or Power Operations mode.
o EALs applicable only under cold operating modes - This group would only be reviewed by the EAL-user when the plant is in Cold Shutdown, Refuel or Defueled mode.
The purpose of the groups is to avoid review of hot condition EALs when the plant is in a cold condition and avoid review of cold condition EALs when the plant is in a hot condition. This approach significantly minimizes the total number of EALs that must be reviewed by the EAL-user for a given plant condition, reduces EAL-user reading burden and, thereby, speeds identification of the EAL that applies to the emergency.
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- Within each of the above three groups, assignment of EALs to categories/subcategories
- Category and subcategory titles are selected to represent conditions that are operationally significant to the EAL-user. Subcategories are used as necessary to further divide the EALs of a category into logical sets of possible emergency classification thresholds. The proposed IPEC EAL categories/subcategories and their relationship to NEI Recognition Categories are listed below.
o Not all EALs are applicable post shut down. Validate applicable EALs via EAL Wall Chart. The only applicable EALs will be under cold operating mode. This is based on the Units being in a permanently defueled condition and the restriction imposed by 10 CFR 50.82(a)(2), operation of the reactoi or emplacement or retention of fuel into the reactor vessel is prohibit0d.
IPEC NON-QUA LITY EMERGENCY RELATED IP-EP-AD13 Revision 22 PLAN PROCEDU RE ADMINISTRATIVE ----- ----- .---- ----, ----- -1 PROCEDURES REFEREN CE USE Page 9 of 309 EAL Groups, Categories and Subcategories EAL Group/Category I EAL Subcategory Any Operating Mode:
A - Abnormal Rad Release / Rad Effluent 1 - Offsite Rad Conditions 2 - Onsite Rad Conditions 3 - CR/CAS Radiation H - Hazards 1 - Natural & Destructive Phenomena 2 - Fire or Explosion 3 - Hazardous Gas 4- Security 5 - Control Room Evacuation 6-Judgme nt E - Independent Spent Fuel Storage !n~tallation None (ISFSI)
Hot Conditions:
i
' S - System Malfunction 1- Loss of AC Powei 2- ATl/'./2 / Criticality 3- lnabi!Hy to Reach Shutdown Conditions 4- Instrumentation / Communications 5- Fuel Clad Degradation 6- RCS !_eakage 7- Loss of DC Powt')r F - Fission Product Barrier Degradation None Cold Conditions:
C - Cold Shutdown I Refuel System Malfunction 1 - Loss of AC Power 2-RPV Level 3 - RCS Temperature 4 - Communications 5 - Inadvertent Criticality 6 - Loss of DC Power
- NON-QUA LITY EMERG ENCY . RELATED IP-EP-AD13 Revision 22 PLAN PROCEDURE ADMINISTRATIVE - - - - - - - - - - - - - + - - - - - - - <
PROCEDURES REFERENCE USE Page 10 of 309 The primary tool for determining the emergency classification level is the EAL classification matrix. The user of the EAL classification matrix may (but is not required to) consult the EAL Technical Bases in order to obtain additional information concerning the EALs under classification consideration. The user should consult Sections 2. 7 and 2.8, and Attachments 1 and 2 of this document for such information.
2.7 Technical Bases Information EAL technical bases are provided in Attachment 1 for each EAL according to EAL group (Any, Hot, Cold), EAL category (A, C, H, S, E and F) and EAL subcategory. A summar y explanation of each category and subcategory is given at the beginning of the technical bases discussions
Category Letter & Title Subcategory Number & Title Initiating Condition (IC)
Site-specific description of the generic IC given in NEI 99-0i EAL Identifier (enclosed in rectangle_)
Each EAL is assigned a unique identifier to support acciJrate communication of the emergency classification to onsite and offsite personnei. Four characters define each EAL identifier:
- 1. First character (letter): Corresponds to the EAL category as described above (A, C, H, S, E or F)
- 2. Second character (letter): The emergency classification (G, S, A or U)
- 3. Third character (number): Initiating Condition (subcategory) number within the given category. Initiating _Conditions (subcategories) are sequentially numbered beginning
.~
with the number one (1 ). If a category does not have a subcategory, this character is assigned the number one (1 ).
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-1 PROCEDURES REFERENCE USE Page 11 of 309
- 4. Fourth character (number): The numerical sequence of the EAL within the EAL subcategory. If the subcategory has only one EAL, it is given the numbe r one (1 ).
Classification {enclosed in rectangle):
Unusual Event (U), Alert (A), Site Area Emergency (S) or General Emerg ency (G)
EAL (enclosed in rectangle)
Exact wording of the EAL as it appears in the EAL classification matrix Mode Applicability One oi- more of the following plant operating conditions comprise the mode to which each EAL is applicable: 1 - Power Operation, 2 - Startup, 3 - Hot Standby, 4
- Hot Shutdown, 5 -
Cold Shutdown, 6 - Refuel, Defueled, All or NIA - Not Applicable. (See Section 2.8 for operating mode definitions.)
NEI 99-01 Basis:
The basis discussion applicable to the EAL taken from NEI 99-01 IPEC Basis:
Description of the site-specific rationale for the EAL IPEC Basis Reference(s):
Site-specific source documentation from which the EAL is derived
IPEC NON-QUAL ITY EMERGE NCY RELATED IP-EP-AD13 Revision 22 PLAN. PROCEDURE ADMINISTRATIVE 1---- ------ ---,-- ----.. ----1 PROCED URES. REFERENCE USE Page 12 of 309 2.8 Operating Mode Applicability
% RATED AVERAGE REACTIVITY MODE TITLE THERMAL REACTOR COOLAN T CONDITION POWER(a) TEMPERA TURE (kert)
( OF) 1 Power Operation ~ 0.99 >5 NA 2 Startup ~0.99 ~5 NA 3 Hot Standby <0.99 NA ~ 350 4 Hot Shutdown(b) <0.99 NA 350 > Tavg > 200 5 Cold Shutdown(b) <0.99 NA ~ 200 6 Refueling(c} NA NA NA Defueled Reactor vesssl contains no irradiated fuel (a) Excluding decay heat.
(b) All reactor vessel head closure bolts fully tensioned:
(c) One or more reactor vessel head closure bolts less than fully tensioned.
The plant operating mode that exist~ at the time that the event occurs (prior to any protective system or operator action is initiated in response to the condition) should be compared to the mode applicability of the EALs. If a lower or higher plant operating mode is reached before the emergency classification is made, the declaration shall be based on the mode that existed at the time the event occurred.
For events that occur in Cold Shutdown or Refueling, escalation is via EALs that have Cold Shutdown or Refueling for mode applicability, even if Hot Shutdown (or a higher mode) is entered during any subsequent heat-up. In particular, the fission product barrier EALs are applicable only to events that initiate in Hot Shutdown or higher.
IPEC NON-QUAL ITY EMERGENCY RELATED IP-EP-AD13 Revision 22 PLAN PROCEDURE ADMINISTRATIVE 1-----------.-----1-----T----l PROCEDURES REFERENCE USE Page 13 of 309 2.9 Unit Specific Data The EALs described herein are applicable to both Indian Point Unit 2 and Unit 3 unless specifically stated. In those instances where specific information is different between the two units, the first value shown applies to Unit 2 and the value in parentheses is applicable to Unit 3.
2.1 O Validation of Indications, Reports and Conditions All emergency classifications shall be based upon valid indications, reports or conditions. An indication, report, or condition, is considered to be valid when it is verified by (1) an instrument channel check, or (2) indications on ielated or redundant indicators, or (3) by direct obseration by plant personnei, such tilat doubt related to the indicator's operability, the condition's existence, or t11e report's accuracy is removed. !mp!icit in this definition is the need for timely assessment.
2.11 Planned vs. Unplanned Events Planned evolutions involve preplanning to address the limitations imposed by the condition, the performance of required surveillance testing, and the implementation of specific controls prior to knowingly entering the condition in accordance with the specific requirements of the site's \
Technical Specifications. Activities which cause the site to operate beyond that allowed by the site's Technical Specifications, planned or unplanned, may result in an EAL threshold being met or exceeded. Planned evolutions to test, manipulate, repair, perform maintenance or modifications to systems and equipment that result in an EAL value being met or exceeded are not subject to classification and activation requirements as long as the evolution proceeds as planned and is within the operational limitations imposed by the specific operating license.
However, these conditions may be subject to the reporting requirements of 10 CFR 50. 72.
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---i PROCEDURES REFERENCE USE Page 14 of 309 2.12 Classifying Transient Events For some events, the condition may be corrected before a declaration has been made. The key consideration in this situation is to determine whether or not further plant damage occurred while the corrective actions were being taken. In some situations, this can be readily determined, in other situations, further analyses (e.g., coolant radiochemistry sampling) may be necessary.
Classify the event as indicated and terminate the emergency once assessment shows that there were no consequences from the event and other termination criteria are met.
Existing guidance for classifying transient events addresses the period of time of event recognition and classification ( 15 minutes), However, in cases when EAL declaration criteria may be met momentarily during the normal expected response of the plant, declaration requirements should not be considered to be met when the conditions are a part of the designed plant response, er re.~:uit from appropriate Operator actions.
There may be cases in whieh a plant condition that e}(c~eded an EAL was not recognized at the time of occurrence but 1s identified we!i after the condition has occurred (e.g., as a result of routine log or record review), and the condition r.o longer exists. In these cases, sn emergency should not be declared.
Reporting requirements of 10 CFR 50.72 are applicable and the guidance of NUREG-1022, Event Reporting Guidelines 10 CFR 50.72 and 50.73, should be applied.
2.13 Imminent EAL Thresholds Although the majority of the EALs provide very specific thresholds, the Emergency Director must remain alert to events or conditions that lead to the conclusion that exceeding the EAL threshold is imminent. If, in the judgment of the Emergency Director, an imminent situation is at hand, the classification should be made as if the threshold has been exceeded. While this is particularly prudent at the higher emergency classes (the early classification may.permit more effective implementation of protective measures), it is nonetheless applicable to all emergency classes.
IPEC NON-QUAL ITY EMERGENCY RELATED IP-EP-AD13 Revision 22 PLAN PROCEDURE ADMINISTRATIVE 1---------1-----------.----+---..-----1 PROCEDURES REFERENCE USE Page 15 of 309 2.14 Treatment Of Multiple Events When multiple simultaneous events occur, the emergency classification level is based on the highest EAL reached. For example, two Alerts remain in the Alert category. Or, an Alert and a Site Area Emergency is a Site Area Emergency.
2.15 Emergency Classification Downgrading and Termination Another important aspect of usable EAL guidance is the consideration of what to do when the risk posed by an emergency is clearly decreasing. While event downgrading to lower emergency classification levels may have merit under certain circumstances it is the policy at IPEC that emergency classifications be directiy terminated rather than downgraded and transitioned into the recovery phase per implementing procedure guidance.
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3.0 REFERENCES
3.1 Developmental 3.1.1 NEI 99-01 Revision 5, Methodology for Development of Emergency Action Levels, February 2008 (ADAMS Accession Number ML080450149) 3.1.2 NRC Regulatory Issue Summary (RIS) 2003-18, Supplement 2, Use of Nuclear Energy Institute (NEI) 99-01, Methodology for Development of Emergency Action Levels Revision 4, Dated January 2003 (December 12, 2005) 3.2 Implementing 3.2.1 IP-EP-120 Emergency Classification 3.2.2 EAL Comparison Matrix 3.2.3 EAL Classltlcation Matr'ix 3.3 Commitments None
IPEC NON-QUA LITY EMERG ENCY RELATED IP-EP-AD13 Revision 22 PLAN PROCEDURE ADMINISTRATIVE 1---------+--~--+------.----1 PROCEDURES REFERENCE USE Page -17 of 309 4.0 DEFINITIONS & ACRONYMS Definitions Affecting Safe Shutdown Event in progress has adversely affected functions that are necessary to bring the plant to and maintain it in the applicable hot or cold shutdown condition. Plant condition applicability is determined by Technical Specification LCOs in effect.
Example 1: Event causes damage that results in entry into an LCO that requires the plant to be placed in hot shutdown. Hot shutdown is achievable, but cold shutdown is not. This event is not "affecting safe shutdown."
Example 2: Event causes damage that results in entry into an LCO that requires the plant to be placed in cold shutdown. Hot shutdown is achievable, but cold shutdown is not. This event is "affecting safe shutdown."
Bomb Refers to an explosive device suspected of having sulfichmt force to damage plant systems or structures.
Civil Disturbance A group of people violently protesting station operations or activities at the site Confinement Boundary Is the barrier(s) betwe_en areas containing radioactive substances and the environment Containment Closure The site specific procedurally defined actions taken to secure containment and its associated structures, systems, and components as a functional barrier to fission product release under existing plant conditions. As applied to IPEC, Containment Closure exists when the requirements of Section 3.9.3 of Technical Specifications are met.
Explosion Is a rapid, violent, unconfined combustion, or catastrophic failure of pressurized/energized equipment that imparts energy of sufficient force to potentially damage permane nt structures, systems, or components.
Extortion Is an attempt to cause an action at the station by threat of force.
Faulted In a steam generator, the existence of secondary side leakage that results in an uncontrolled drop in steam generator pressure or the steam generator being completely depressurized
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PROCEDURES REFERENCE USE Page 18 of 309 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.
Hostage Person(s) held as leverage against the station to ensure that demands will be met by the station.
Hostile Action An act toward IPEC 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 bG construed to in.elude acts of civil disobedience or felonious acts that are not part of a concerted at~ack on IPEC. Non-lerrorism-based EALs should be used to address such activities, (e.g., violent acts bet\-veer. individuals in the owner controlied area).
Hostile Force One or more individuals who are enga9ed in a determined assault, overtly or by stealth and deception, equipped with suitable weapons capable of killing, maiming, or causing destruction.
Imminent
. Mitigation actions have been ineffective, additional actions are not expected to be successful, and trended information indicates that the event or condition will occur. Where imminent timeframes are specified, they shall apply.
Inoperable Not able to perform its intended function Intruder Person(s) present in a specified area without authorization.
Intrusion The act of entering without authorization Discovery of a bomb in a specified area is indication of intrusion into that area by a hostile force.
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.
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1 PROC EDUR ES REFERENCE USE Page 19 of 309 Normal Plant Operations Activities at the plant site associated with routine testing, mainte nance, or equipm ent operations, in accord ance with normal operat ing or administrative proced ures. Entry into abnorm al or emerg ency operating procedures, or deviation from norma l securit y or radiolo gical controls posture, is a depart ure from Norma l Plant Operations. ,
Projectile An object directe d toward a NPP that could cause concern for its continu ed operability, reliability, or person nel safety.
- Protected Area An area which norma lly encom passes all controlled areas within the securit y protec ted area fence as depict ed in Drawing 931-F- 'I5343 Plot Plan Unit 1, 2 & 3.
Release A release of radioactive materials due to the classified event (per NYS Radiological Emerg ency Data Form, Part 1). In accord ance with the Part 1 form, "Relea se" is classif ied as one of the four (4) foliowing descriptions:
A. NO Release B. Release BELOW FBderal Limits C. Releas e ABOV E Federal Limits D. Unmonitored Release Requiring Evaluation Ruptured In a steam genera tor, existence oi primary-to-secondary leakag e of a magnit ude sufficie nt to require or cause a reacto r trip and cafety injection Sabotage Deliberate damag e, misalignment, or miss-operation of plant equipm ent with the intent to render the equipm ent inoperable. Equipm ent found tampered with or damag ed due to malicious mischi ef may not meet the definition of Sabota ge until this determ ination is made by securit y superv ision.
Security Condition Any securit y event as listed in the approved security conting ency plan that constit utes a threat/ compr omise to site security, threat/risk to site personnel, or a potent ial degrad ation to the level of safety of the plant. A security condition does not involve a hostile action.
Significant Transient An unplan ned event involving any of the following:
- Runba ck > 25% thermal power
- Electrical load rejection > 25% full electrical load
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1 PROCE DURES REFERENCE USE Page 20 of 309 a Reacto r scram
., ECCS injection ll Therma l power oscillations > 10%
Strike Action Work stoppag e within the Protected Area by a body of workers to enforce complia nce with demand s made on IPEC. The strike action must threaten to interrupt Normal Plant Operations.
Unisolable A breach or leak that cannot be promptly isolated.
Unplan ned A parame ter change or an event that is not the result of an intended evolution and require s corrective or mitigative actions.
Valid An indication, report, or cond1tion, is considered to be vaiid when it is verified fJY
{1) an instrum ent channel checi.-:, or (2) indications on related or redund ant indicators, or (3) by direct observation by plant personnel, such that doubt reiaied to the indicator's operabi lity, the condition's existence, or thG report's accuracy is removed. Implicit in this definitio n is the need for timely assessment.
Visible Damag e Damag e to equipm ent or structure that is readily ob3ervabie without measurements
, testing, or analysis. Damag e is sufficient to cause concern regarding the continued operabi lity or reliability of affected safety structure, system, or component. Example damage includes:
deformation due to heat or impact, denting, penetration, rupture, cracking, paint blistering.
Surface blemish es (e.g., paint chipping, scratches) should not be included.
Acrony ms AC ..... -.................................................................................................. Alternating Curren t APRM .................................................................................. Averag e Power Range Meter ATWS ...................................................................... Anticipated Transient Withou t Scram BWR ................................................................................................ Boiling Water Reacto r CAS ..................................................................................................Central Alarm Station CDE ...................................................................................... Committed Dose Equival ent CFR. ..................................................................................... Code of Federal Regula tions DC ............................................ -................................................................... Direct Current EAL ............................................................................................. Emergency Action Level ECCS ............................................................................ Emergency. Core Cooling System
IPEC NON-QU ALITY EMERGENCY RELATED IP-EP-AD13 Revision 22 PLAN PROCEDURE ADMINISTRATIVE f--------+----..-----1------,.-~
PROCEDURES REFERENCE USE Page 21 of 309 EGL ........... ,...................................................................... Emergency Classification Level EOG .................................................................................... Emergency Diesel Genera tor ELEV.....*; ............................................................................................................. Elevatio n
ENS .......... .......... .......... .......... .......... .......... ......... Emergency Notification System EOF ................................................................................... Emergency Operations Facility EOP .............................................................................. Emergency Operating Proced ure EPA ............................................................................... Environmental Protection Agency EPG ............................................................................... Emergency Procedure Guideli ne EPIP ................................................................ Emergency Plan Implementing Proced ure ESF ......................................................................................... Engineered Safety Feature FAA .................................................................................. Federal Aviation Adminis tration FBI ................................................................................... Federal Bureau of Investig ation FEMA ...............................................................Federal Emergency Management Agency FSAR ....................................................................................Final Safety Analysis Report GE ......................................................................................................General Emerge ncy IC ......................................................................................................... Initiating Conditi on IDLH ................................................................ Immediately Dangerous to Life and Health IPEC ........................................................................................ lndian Point Energy Center IPEEE ................ Individual Plant Examination of External Events (Generic Letter 88-20)
ISFSI ............................................................ Independent Spent Fuel Storage Installa tion Keff........................................................................ Effective Neutron Multiplication Factor LCO .................................................................................. Limiting Condition of Operati on LER ............................................................................................... Licensee Event Report LOCA ......................................................................................... Loss of Coolant Acciden t
LWR .................................................................................................... Light Water Reacto r
MSIV ...................................................................................... Main Steam Isolation Valve MSL ......................................................................................................... Main Steam Line mR ............................................................................................................... milliRoe ntgen MW ..................................................................................................................... Megaw att NEI .............................................................................................. Nuclear Energy Institute NESP .................................................................. National Environmental Studies Project NPP ................................................................................................... Nuclear Power Plant NRG ............................................................................... Nuclear Regulatory Commi ssion NSSS ................................................................................ Nuclear Steam Supply System NORAD ................................................... North American Aerospace Defense Comma nd
IPEC NON-QUA LITY EMERGENCY RELATED IP-EP-AD13 Revision 22 PLAN PROCEDURE ADMINISTRATIVE 1--------,---~--1-----.-------;
PROCEDURES REFERENCE USE Page 22 of 309 OBE ...................................................................................... Operating Basis Earthquake OCA .............................................................................................. Owner Controlled Area ODCM ........................................................................... Off-site Dose Calculation Manual PRA/PSA ..................... Probabilistic Risk Assessment I Probabilistic Safety Assessment PWR........................................................................................ Pressurized Water Reactor PSIG ............................................................................... Pounds per Square Inch.Gauge R ........................................................................................................................ Roentgen RCP .............................................................................................. Reactor Coolant Pump RCS ............................................................................................ Reactor Coolant System rem .......................................................................................... Roentgen Equivalent Man RPS ......... .-................................................................................. Reactor Protection System RPV............................................................................................. Reactor Pressure Vessel SAE ................................................................................................... Site .A.rea Emergency SBO ......................................................................................................:.. Station Blackout SFP ............................................................................................................. Spent Fuel Pit SPDS ........................................................................... Safety Parameter Display System SRO .............................................................................................Sf~nior Reactor Operator TEDE ............................................................................... Total Effective Dose Equivalent TAF .......................................................................................................Top of Active Fuel TC ...............................................................................................................Thermocouple TSC ........................................................................................... Technical Support Center UE .............................................................................................................. Unusual Event
IPEC NON-QUAL ITY EMERGENCY RELATED IP-EP-AD13 Revision 22 PLAN PROCEDURE ADMINISTRATIVE 1--------+-----,-----+-----,---i PROCEDURES REFERENCE USE Page 23 of 309 5.0 RESPONSIBILITIES 5.1 Emergency Planning Manager The Emergency Planning Manager shall periodically evaluate the need to update and revise the EAL technical bases due to:
A. Revisions to EALs
- 8. Changes in plant configuration or design
- 8. Changes in system set-points or values reference in the EALs C. Operating experience and interpretation clarifications Any revision to the wording of one or more EALs shail require a revision to this procedure and shall be reviewed and approved as part of the EAL change.
5.2. EAL End-Users Emergency Response Organization members responsible fm the evaluation of EALs and/or emergency classificati-on sha!! become familiar *,Nith the contents of this document. This document may be used to assist personnel responsibie for emergency classiftcatlon in interpreting the intent of EA.Ls.
IPEC NON-QUAL ITY EMERGE NCY RELATED IP-EP-AD13 Revision 22 PLAN PROCEDURE ADMINIST RATIVE r--------+---,----+------,------1 PROCEDU RES REFERENCE USE Page 24 of 309 6.0 IPEC-TO-NEI 99-01 EAL/PAGE CROSSREFERENCE This cross-reference is provided to facilitate association and location of an IPEC EAL within the NEI 99-01 IC/EAL identification scheme with page number. Further information regarding the developm ent of the IPEC EALs based on the NEI guidance can be found in the EAL Comparison Matri~.
IPEC NEI 99-01 EAL Example PAGE#
IC EAL AU1.1 AU1 1 30 AU1.2 I AU1 ., 33 I I t**-*
AU1.3 AU1 ....
,j 36 I
I-*
AU2.1 I' -
AU2 I 1 57 I **----
t*. _:u2 iI ,u.U2.2 I
2 60
~--
I I .. _J I
- AA1.1 AA1 1 38 AA1.2 AA1 1 40 AA1.3 AA1 3 43 AA2.1 AA2 1 62 AA2.2 AA2 2 64 AA3.1 AA3 1 66 AS1.1 AS1 1 45 AS1.2 AS1 2 47 AS1.3 AS1 4 49 AG1.1 AG1 1 51 AG1.2 AG1 2 53 AG1.3 AG1 4 55
IPEC NON-QUA LITY EMERG ENCY RELATED IP-EP-AD13 Revision 22 PLAN PROCEDURE ADMINIS TRATIVE - - - - - - - + - - - - - r - - - - + - - - - - - r - - - - 1 PROCED URES ._ REFERENCE USE Page 25 of 309 IPEC NEI 99-01 Example PAGE#
EAL IC EAL CU1.1 CU3 1 70 CU2.1 CU1 1, 2 75 CU2.2 CU2 1 77 CU2.3 CU2 2 81 CU3.1 CU4 1 117 CU3.2 CU4 2 119 CU4.1 CU6 *1, 2 127 CU5.1 CUB 1 *130 CUi3.1 CU? 1
*----*- l 131 I
CA"l.1 CA3 1 l 73 I
~ C~2.1 C.A.1 1, 2 I I
85
~, A') "
I...,, ,.J. I CA4 1, 2, 3
.N . .
I 123 CS2.1 CS1 1 89 CS2.2 CS1 2 92 CS2.3 CS1 3 95 CG2.1 CG1 1 102 CG2.2 CG1 2 108 FU1.1 FU1 1 250 FA1.1 FA1 1 251 FS1.1 FS1 1 252
- FG1.1 FG1 1 254 HU1.1 HU1 1 135
IPEC NON-QUA LITY EMERG ENCY RELATED IP-EP-A D13 Revision 22 PLAN PROCEDURE ADMINIS TRATIVE - - - - - - - - - - ~ - - - - - - r - - - - - 1 PROCED URES REFERENCE USE Page 26 of 309 IPEC NEI 99-01 EAL IC Example PAGE#
EAL HU1.2 HU1 2 137 HU1.3 HU1 4 139 HU1.4 HU1 3 141 HU1.5 HU1 5 143 HU2.1 HU2 1 158
'--- - - - * - - - - - +-------+-----------<
HU2.2 HU2 2 160 1---- -- ----: ----- --+-- ----- -;
HU3.1 HU3 1 164 1-------------------1------,
HU3.2 HU3 2
\---- ----- ---! - - - - - - - - -166 ---,
- I
~~---- '_...___r_lU_4_~: ___;_,£_~,_3____ _1_7_0_- --,
i' HU6.1 H.U5 !j I*
r*-H;_-1_1-- HA 1 *-7---1-- -
L----------+-*---------------t 1 183
---1--45 -, --*j HA-1.2 HA1 I
~--- - --~- ---- ---- ----
I 2 147 1 HAi.3 HA1 I 5 149 HA1.4 HA1 I 4 151 HA1.5 HA1 3 153 HA1.6 HA1 6 155 HA2.1 HA2 1 162 HA3.1 HA3 1 168 HA4.1 HA4 1, 2 173 HA5.1 HA5 1 180 HA6.1 HA6 1 185 HS4.1 HS4 1 176
IPEC NON-QU ALITY EMERG ENCY RELATED IP-EP-AD13 Revision 22 PLAN PROCEDURE ADMIN ISTRAT IVE ~ - - - - - - - ~ - - + - - - - - r - - - - - - - - l PROCE DURES REFERENCE USE Page 27 of 309 IPEC NEI 99-01 EAL Example PAGE #
IC EAL HS5.1 HS2 1 181 HS6.1 HS3 1 187 HG6.1 HG2 1 189 SU1.1 SU1 1 194 SU2.1 SU8 2 211 I
SU3.1 I
I SU2 I
i r
1 221 SU4.1 I SU3 1 223 I
I SU4.2 I SiJ6 II 1,2 I
225
j SU5.1 SU4 I
I 2 235 SU5.2 Ii 237 I
SU6.1 SU5 \ 1, 2 239 I
SA1.1 SAS 1 198 SA2.1 SA2 1 212 SA4.1 SA4 1 228 SS1.1 SS1 1 201 SS2.1 SS2 1 215 SS4.1 SS6 1 232 SS7.1 SS3 1 241 SG1.1 SG1 1 205 SG2.1 SG2 1 218 EU1.1 E-HU1 1 244
IPEC NON-QUALITY EMERGENCY RELATED IP-EP-AD13 Revision 22 PLAN PROCEDURE ADMINISTRATIVE i--------i------.---i-----,-----i PROCEDURES REFERENCE USE Page 28 of 309 7.0 ATTACHMENTS 7 .1 Attachment 1, EAL Bases 7 .2 Attachment 2, Fission Product Barrier Loss / Potential Loss Matrix and Basis
IPEC NON-QUAL ITY EMERGE NCY RELATED Revision 22 PLAN PROCEDURE ADMINIST RATIVE ----- ---~- -- ----- ----1 PROCEDU RES REFERENCE USE Page 29 of 309 Attachmen t 1 - Emergency Action Level Bases Category A - Abnormal Rad Release / Rad Effluent EAL Group: ANY (EALs in this category are applicable to any plant condition, hot or cold.)
Many EALs are based on actual or potential degradation of fission product barriers because of the elevated potential for offsite radioactivity release. Degradati on of fission product barriers though is not always apparent via non-radiological symptoms . Therefore, direct indication of elevated radiological effluents or area radiation levels are appropriat e symptoms for emergenc y classification.
At lower levels, abnormal radioactivity releases may be indicative of a failure of containme nt systems or precursors to more significant releases. At higher release rates, offsite radiological conditions may result which require offsite protective actions. Elevated area radiation levels in plant may aiso be indicative of the failure of containment systems or preclude access to plant vital equipmen t necessary to ensure plant safety.
Events of this category pertain to the followin:J subcategories:
- 1. Offsite Rad Conditions Direct indication of effluent radiation monitoring systems provides a rapid assessme nt mechanism to determine releases in excess of classifiable limits. Projected offsite doses, actual offsite field measurem ents or measured release rates via sampling indicate doses or dose rates above classifiable limits.
- 2. Onsite Rad Conditions & Irradiated Fuel Events Sustained general area radiation levels in excess of those indicating loss of control of radioactive materials or those levels which may preclude access to vital plant areas also warrant emergenc y classification.
- 3. CR/CAS Radiation Sustained general area radiation levels in excess of 15 mR/hr. may preclude access to areas requiring continuous occupancy also warrant emergenc y classification.
IPEC NON-QUA LITY EMERGENCY RELATED IP-EP-AD13 Revision 22 PLAN PROCEDURE ADMINISTRATIVE 1--------+--~---+-----,-------1 PROCEDURES REFERENCE USE Page 30 of 309 Attachment 1 - Emergency Action Level Bases Category: A - Abnormal Rad Release I Rad Effluent Subcategory: 1 - Offsite Rad Conditions Initiating Condition: Any release of gaseous or liquid radioactivity to the environment greater than 2 times the Offsite Dose Calculation Manual (ODCM) limits for~ 60 min.
EAL:
AU1.1 Unusual Event Any valid gaseous monitor reading > Table A-1 column "UE" for~ 60 min. (Note 2)
L -
Table A-1
~--
Effluent Mcnit.or Classification Thresholds
[ Monitor
! GE I
-**===+-
fjAE I Alert I
I L. UE I
4
? .5 E+07 µCi/sec 7.5 E-rijC pCi!se~ 1.4 E+06 µCi/sec 2.6 E+05 µCi/sec rn
- , R-27 (2.3 E+00 µCiicc) (2.3 E-0i pCiicc) 0 (4.2 E-02 µCi/cc} (8.0 E-03 µCi/cc)
Ill Cl)
!'Cl
(.!);
R-44 [*14] NIA NIA 4.2 E-02 µCi/cc 8.0 E-03 µCi/cc I
I N/A N/A
- E!i R-54 [18) 4.0E-02 µCi/tee 2.SE-03 µCi/cc t:r
- i R-49 [19) N/A N/A 5.SE-02 µCi/cc 5.SE-04 µCi/cc Note 2: The Emergency Director should not wait until the applicable time has elapsed, but should declare the event as soon as it is determined that the release duration has exceeded, or will likely exceed, the applicable time. In the absence of data to the contrary, assume that the release duration has exceeded the applicable time if an ongoing release is detected and the release start time is unknown.
Mode Applicability:
All NEI 99-01 Basis:
The Emergency Di_rector should not wait until the applicable time has elapsed, but should declare the event as soon as it is determined that the condition will likely exceed the applicable time.
IPEC NON-Q UALITY EMER GENC Y RELATED IP-EP-AD13 Revision 22 PLAN PROCEDURE ADMINISTRATIVE 1--------1---------~~
PROCEDURES REFERENCE USE Page 31 of 309 Attachment 1 - Emergency Action Level Bases This EAL addresses a potential decrease in the level of safety of the plant as indicated by a radiological release that exceeds regulatory commitments for an extend ed period of time.
Nuclea r power plants incorporate features intended to control the release of radioactive effluents to the environment. Further, there are administrative controls established to preven t unintentional releases, or control and monitor intentional releases. The occurrence of extended, uncontrolled radioactive releases to the environment is indicat ive of a degradation in these features and/or controls.
The release rate multiples are specified in EALs AU1 .1 and AA 1.1 only to distinguish between non-em ergenc y conditions, and from each other. While these multiples obviously correspond to an off-site dose or dose rate, the emphasis in classifying these events is the degradation in the level of safety of the plant, not the magnitude of the associated dose or dose rate.
This EAL addresses radioactivity releases, that for whatever reason, cause effluent radiation monito r readings to exceed the threshold identified.
This EAL is intended for sites that have established effluent monitoring on non-routine release pathways for which a discharge permit would not normally be prepared.
IPEC Basis:
Gaseous releases in excess of two times the site ODCM (ref. 1) instan taneous limits that continue for 60 minutes or longer represent an uncontrolled situation and hence, a potential degradation in the level of safety. The final integrated dose (which is very low in the Unusual Event emergency class) is not the primary concern here; it is the degrad ation in plant control implied by the fact that the release was not isolated within 60 minutes.
The values shown for each monitor represents two times the calculated ODCM release rates (ref. 2).
IPEC NON-QU ALITY EMERGENCY RELATED IP-EP-AD13 Revision 22 PLAN PROCEDURE ADMINISTRATIVE t - - - - - - - - - - . - - - t - - - - . . - - - - ~
PROCEDURES REFERENCE USE Page 32 of 309 Attachment 1 - Emergency Action Level Bases IPEC Basis Reference(s):
- 2. EP-EALCALC-IPEC-1001, Revision 2, Radiological Gaseous Effluent EAL Values Post Unit 2 and Unit 3 Shutdown:
R-49 and R-19 UE thresholds are not applicable.
IPEC NON-QUA LITY EMERG ENCY RELATED IP-EP-AD13 Revision 22 PLAN PROCEDU RE ADMINISTRATIVE 1----------~-----~__,
PROCEDURES REFEREN CE USE Page 33 of 309 Attachm ent 1 - Emergency Action Level Bases Category: A - Abnormal Rad Release / Rad Effluent Subcategory: 1 - Offsite Rad Conditions Initiating Condition: Any release of gaseous or liquid radioactivity to the environment greater than 2 times the Offsite Dose Calculation Manual (ODCM) limits for~ 60 min.
EAL:
AU1 .2 Unusual Event Any valid liquid monitor reading> Table A-1 column "UE" for~ 60 min. (Note 2)
I Table A-1 Effluent Monitor Classification Thresholds I
Monitor GE !- SAE I Aleit I UE I
7.5 E+07 µCi/sec 7.5 E+G6 µCi/s-e,-: 1.4 E+06 µCi/sec 2.6 E+0S µCi/sec f/1
- I R-27 (2.3 E+O0 µCi/cc) {2.3 E-01 µCi!cc*1 0
Ql .
(4.2 E-02 µCi/cc) (8.0 E-03 µCi/cc) f/1 m
C) 1 R-44 [14] NIA f.J/A 4.2 E-02 µCi/cc 3.0 E-03 µCi/cc
-c I R-54 [i 8]
I NIA NIA 4.0E-02 µCi/cc 2.5E-03 µCi/cc
- I'! .
C" ----~
- J R-49 [19] NIA N/A 5.8E-02 µCi/cc 5.8E-04 µCi/cc Note 2: The Emergenc y Director should not wait until the applicable time has elapsed but should declare the event as soon as it is determine d that the release duration has exceeded, or will likely exceed, the applicable time. In the absence of data to the contrary, assume that the release duration has exceeded the applicable time if an ongoing release is detected and the release start time is unknown.
Mode Applicability:
All NEI 99-01 Basis:
The Emerg_ency Director should not wait until the applicable time has elapsed but should declare the event as soon as it is determined that the condition will likely exceed the applicab le time.
IPEC NaN-QU ALITY EMERGENCY RELATED IP-EP-AD13 Revision 22 PLAN PROCEDURE ADMINISTRATIVE 1 - - - - - - - - - + - - - . - - - - - - - - - - . - - - -
1 PROCEDURES REFERENCE USE Page 34 of 309, Attachment 1 - Emergency Action Level Bases This EAL addresses a potential decrease in the level of safety of the plant as indicated by a radiological release that exceeds regulatory commitments for an extend ed period of time.
Nuclear power plants incorporate features intended to control the releas e of radioactive effluents to the environment. Further, there are administrative controls established to preven t unintentional releases, or control and monitor intentional releases. The occurrence of extended, uncontrolled radioactive releases to the environment is indicat ive of a degradation in these features and/or controls.
The release rate multiples are specified in EALs AU1 .2 and AA 1.2 only to distinguish between non-emergency conditi'Jns, and from each other. While-these multiples obviously correspond to an off-site dose or dose rate, the emphasis in classifying these events is the degradation in the level of safety of the plant, net the magnitude of the associated dose or dose rate.
This EAL addresses radioactivity reieases, that for whatever reason, cause effluent radiation monitor readings to exceed the thrasho!d identified.
This EAL is intended for sites that have established effluent monitoring en non-routine release pathways for which a discharge peimit would not normally be prepared.
IPEC Basis:
Liquid releases in excess of two times the site ODCM (ref. 1) instantaneou s limits that continue for 60 minutes or longer represent an uncontrolled situation and hence, a potential degradation in the _level of safety. The final integrated dose (which is very low in the Unusual Event emergency class) is not the primary concern here; it is the degradation in plant control implied by the fact that the release was not isolated within 60 minutes.
The values shown for each monitor represents two times the calculated monitor alarm set-points which are set in accordance with the ODCM (ref. 2).
IPEC NON-QUAL ITY EMERGENCY RELATED IP-EP-AD13 Revision 22 PLAN PROCEDURE ADMINISTRATIVE ----- ---~ ---+ ----- .---- i PROCEDURES REFERENCE USE Page *35 of 309 Attachment 1 - Emergency Action Level Bases IPEC Basis Reference(s):
- 2. Letter from S. Sandike to L. Glander dated Nov.15, 201 O Post Unit 2 and Unit 3 Shutdown:
R-49 and R-19 UE thresholds are not applicable.
IPEC NON-QUALITY EMERGENCY RELATED IP-EP-AD13 Revision 22 PLAN PROCEDURE ADMINISTRATIVE t----------t----r------+---~---1 PROCEDURES REFERENCE USE Page 36 of 309 Attachment 1 - Emergency Action Level Bases Category: A - Abnormal Rad Release I Rad Effluent Subcategor y: 1 - Offsite Rad Conditions Initiating Condition: Any release of gaseous or liquid radioactivity to the environment greater than 2 times the Offsite Dose Calculation Manual (ODCM) limits for~ 60 min.
EAL:
AU1.3 Unusual Event Confirmed sample analyses for gaseous or liquid releases indicate concentrations or release rates > 2 x ODCM limits foi ~ 60 min. (Note 2)
Note 2: The Emergency Director sliouid not wait until the applicable time has elapsed, but should declare the event as soon as it is determined that the release duration has exceeded, or will likely exceed, the applicable time. In the absence of data to the contrary. assuf'lle that tr.s ~elease duration has exceeded the applicable time if an ongoing release is d~tected and the reiease sta.t lime is unknown.
Mode Applicability:
All NEI 99-01 Basis:
The Emergency Director should not wait until the applicable time has elapsed but should declare the event as soon as it is determined thc.1t the condition will likely exceed the applicable time.
This EAL addresses a potential decrease in the level of safety of the plant as indicated by a radiological release that exceeds regulatory commitments for an extended period of time.
Nuclear power plants incorporate features intended to control the release of radioactive effluents to the environment. Further, there are administrative controls established to prevent unintentional releases, or control and monitor intentional releases. The occurrence of extended, uncontrolled radioactive releases to the environment is indicative of a degradation in these features and/or controls.
IPEC NON-QUA LITY EMERGENCY RELATED IP-EP-AD13 Revision 22 PLAN PROCEDURE ADMINISTRATIVE 1 - - - - - - - - - - - - - - + - - ~ - - - - - - - r - - - - - i PROCEDURES REFERENCE USE Page 37 of 309 Attachment 1 - Emergency Action Level Bases The ODCM multiples are specified in AU 1.3 and AA 1.3 only to distinguish between non-emergency conditions, and from each other. While these multiples obviously correspond to an off-site dose or dose rate, the emphasis in classifying these events is the degradation in the level of safety of the plant, not the magnitude of the associated dose or dose rate.
Releases should not be prorated or averaged. For example, a release exceeding 4x ODCM for 30 minutes does not meet the threshold.
This EAL includes any release for which a radioactivity discharge permit was not prepared, or a release that exceeds the conditions (e.g., minimum dilution flow, maximum discharge flow, alarm set-points, etc.) on the applicable permit.
This EAL addresses uncontrnl!ed releases that are detected by sample analyses, particularly on unmonitored pathways, e.g., spills of radioactive liquids into storm drains, heat exchang er leakage in river water systems, etc.
IPEC Basis Confirmed sample analyses in excess of tv,.ro times the site Offsite Dose Calculation Manual (ODCM) (ref. 1) instantaneous limits that continue for 60 minutes or longer represent an uncontrolled situation and hence, a potential degradation in the level of safety. The final integrated dose (which is very low in the Unusual Event emergency class) is not the primary concern here; it is the degradation in plant control implied by the fact that the release 'was not isolated within 60 minutes ..
IPEC Basis Reference(s):
IPEC NON-QU ALITY EMERG ENCY RELATE D IP-EP-AD13 Revision 22 PLAN PROCEDURE ADMINISTRATIVE t---------t-------,------+----.--
--i PROCEDURES REFERENCE USE Page 38 of 309 Attachment 1 - Emergency Action Level Bases Category: A - Abnormal Rad Release I Rad Effluent Subcategory: 1 - Offsite Rad Conditions Initiating Condition: Any release of gaseous or liquid radioactivity to the environment that exceeds significant multiples of the Offsite Dose Calculation Manual (ODCM ) limits for 15 minutes or longer EAL:
AA1.1 Alert Any valid gaseous monitor reading > Table A-1 column "Alert" for~ 15 min. (Note 2) l -
Table A-*1 Effluent Monitor Ciassification Thrnsholds
- I
[_ Monitor I GE
-i-I SAE
-"----r
-- i r~:ert
- I UE I
I '
I I
7.5 E+07 µCi/sec 7.5 E-1 06 µCi/sec 1.4 E+06 µCi/sec
~I gi R-27 (2.3 E+00 µCi/cc) (2.3 E-O*l pCi/cc) (4.2 E-02 µCi/cc) 2.6 E+05 µCi/sec
---- - - - - -----* --- --**-- ---- (8*0 E-03 µCl/cc) f/1' (II
(!)
I R-44 [14] NiA NiA 4.2 E-02 µCi/cc
[ _j__
_a.o E-03 pCi/~ ~
I' R-54 [18]
I I
"0 N/A NIA A.0E-02 µCi/cc 2.SE-03 µCi/cc I
':i' I
- 3" I R-49 [19] NIA N/A 5.8E-02 µCi/cc 5.8E-04 µCi/cc Note 2: The Emergen cy Director should not wait until the applicable time has elapsed but should declare the event as soon as it is determin ed that the release duration has exceeded, or will likely exceed, the applicab le time. In the absence of data to the contrary, assume that the release duration has exceede d the applicab le time if an ongoing release is detected and the release start time is unknown .
Mode Applicability:
All NEI 99-01 Basis:
The Emergency Director should not wait until the applicable time has elapsed but should declare the event as soon as it is determined that the condition will likely exceed the applica ble time.
t .......... .
IPEC NON-QUA LITY EMERGENCY RELATED IP-EP-AD13 Revision 22 PLAN PROCEDURE ADMINISTRATIVE t--------1-----,---+-----,-------j PROCEDURES REFERENCE USE Page 39 of 309 Attachment 1 - Emergency Action Level Bases This EAL-addresses an actual or substantial potential decrease in the level of safety of the plant as indicated by a radiological release that exceeds regulatory commitments for an extended period of time.
Nuclear power plants incorporate features intended to control the release of radioactive effluents to the environment. Further, there are administrative controls established to prevent unintentional releases, or control and monitor intentional releases. The occurrence*of extended, uncontrolled radioactive releases to the environment is indicative of a degradation in these features and/or controls.
The release rate multiples are specified in AU1 .1 and AA 1.1 only to distinguish between non-emergency conditions, and from each other. While these multiples obviously correspond to an off-site dose or dose rate, the emphasis in ciassifying these events is the degradation in the level of safety of the plant, not the magnitude of the associated dose or dose rate.
This EAL includes any release for which a radioactivity discharge permit was not prepared, or a release that exceeds the conditions (e.9., minimum dilution flow, maximum discharge flow, alarm set-points, etc.) on the applicable permit.
This EAL is intended for sites that have established effluent monitoring on non--routine release pathways for which a discharge permit would not normally be prepared.
IPEC Basis:
The selected threshold value for the Plant Vent radiation monitors represents the geometric mean between the calculated UE threshold and SAE threshold values (ref. 2). This is due to the differences in the assumptions used to determine the ODCM (ref. 1) based alarm set-points and the dose assessment methodology used to calculate the SAE and GE thresholds for this release path. Selecting an average between the UE and SAE threshold values provides a realistic near-linear escalation path between the UE and SAE classification levels.
IPEC Basis Reference(s):
- 2. EP-EALCALC-IPEC-1001, Revision 2, Radiological Gaseous Effluent EAL Values Post Unit 2 and Unit 3 Shutdown: R-49 and R-19 UE thresholds are not applicable.
IPEC NON-QUAL ITY EMERGE NCY RELATED IP-EP-AD13 Revision 22 PLAN PROCEDURE ADMINISTRATIVE 1-----------+---~---1---~---1 PROCEDURES REFERENCE USE Page 40 of 309 Attachmen t 1 - Emergency Action Level Bases Category: A - Abnormal Rad Release / Rad Effluent Subcategory: 1 - Offsite Rad Conditions Initiating Condition: Any release of gaseous or liquid radioactivity to the environment that exceeds significant multiples of the radiological effluent Offsite Dose Calculation Manual (ODCM) limits for 15 minutes or longer EAL:
AA1.2 Alert Any valid liquid monitor reading > Table A-1 column "Alert" for~ 15 min. (Note 2)
I Table A-1 Effluent Monitor Classification Thresholds Monitor GE I-- SAE ! Aiert UE II)
R-27 7.5 E+07 µCl/sec I I
?.5 E+06 µCi/sec 1.4 E+06 µCi/se~ 2.6 E+05 µCi/sec
- i 0
(2.3 E~*OO µCi/cc) , ~2.3 E-01 µCi/cc) (4.2 E-02 pCi/cc) (8.0 E-03 µCi/cc)
(I)
II) *---- ell t!)
R-44 [14] N/A I N//l. 4.2 E-0~ pCi/cc 3.0 E-03 µCi/cc
~
.!2 11 R-54 [18] N/A N/A 4.0E-02 µCi/cc 2.SE-03 µCi/cc
..J ~ R-49 [19] N/A N/A 5.8E-02 µCi/cc 5.8E-04 µCi/cc Note 2: The Emergency Director should not wait until the applicable time has elapsed, but should declare the event as soon as it is determined that the release duration has exceeded, or will likely exceed, the applicable time. In the absence of data to the contrary, assume that the release duration has exceeded the applicable time if an ongoing release is detected and the release start time is unknown.
Mode Applicability:
All NEI 99~01 Basis:
The Emergency Director should not wait until the applicable time has elapsed but should declare the event as soon as it is determined that the condition will likely exceed the applicable time.
IPEC NON-QU ALITY EMERGENCY RELATED IP-EP-AD13 Revision 22 PLAN PROCEDURE ADMINISTRATIVE 1 - - - - - - - - ' - - - - - ~ - - - - - ~ - - - - - 1 PROCEDURES REFERENCE USE Page 41 of 309 Attachment 1 - Emergency Action Level Bases This EAL addresses an actual or substantial potential decrease in the level of safety of the plant as indicated by a radiological release that exceeds regulatory commitments for an extended period of time .
. Nuclear power plants incorporate features intended to control the release of radioac tive effluents to the environment. Further, there are administrative controls established to prevent unintentional releases, or control and monitor intentional releases. The occurrence of extended, uncontrolled radioactive releases to the environment is indicative of a degradation in these features and/or controls.
The release rate multiples are specified in AU1 .2 and AA 1.2 only to distinguish betwee n non-emergency conditions, and from each other. While these multiples obviously corresp ond to an off-site dose or dose rate, the emphasis in classifying these events is the degrad ation in the level of safety of the plant, not the magnitude of the associated dose or dose rate.
This EAL includes any release for which a radioactivity discharge permit was not prepared, or a release that exceeds the conditions (e.g., minimum dilution flow, maximum dischar ge flow, alarm set-points, etc.) on the applicable permit.
This EAL is intended for sites that have established effluent monitoring on non-rou tine release pathways for which a discharge permit would not normally be prepared.
IPEC Basis:
This event escalates from the Unusual Event by escalating the magnitude of the release by:
o R-49 [19] by a factor of 100
- R-54 [18] release rate at the upper range of the monitor (>4.0E-02 µCi/cc)
(ref. 2).
IPEC NON-QUAL ITY EMERGE NCY RELATED IP-EP-AD13 Revision 22 PLAN PROCEDURE ADMINIST RATIVE r--------1-----r-----+-------r--------i PROCEDURES REFERENCE USE Page 42 of 309 Attachmen t 1 - Emergency Action Level Bases Liquid releases in excess of the limits shown that continue for 15 minutes or longer represent an significant uncontrolled situation and hence, a potential substantial degradation in the level of safety. The final integrated dose (which is very low in the Alert emergency class) is not the primary concern here; it is the degradation in plant control implied by the fact that the release was not isolated within 15 minutes.
IPEC Basis Reference(s):
- 2. Letter from S. Sandike to L. Glander dated Nov.15, 2010 Post Unit 2 and Unit 3 Shutdown:
R-49 and R-19 UE thresholds are not applicable.
IPEC NON-QUA LITY EMERGENCY RELATED IP-EP-AD13 Revision 22 PLAN PROCEDURE ADMINISTRATIVE 1--------1----~---1----
~--l PROCEDURES REFERENCE USE Page 43 of 309 Attachment 1 - Emergency Action Level Bases Category: A -Abnorm al Rad Release / Rad Effluent Subcategory: 1 - Offsite Rad Conditions Initiating Condition: Any release of gaseous or liquid radioactivity to the environment that exceeds significant multiples of the radiological effluent Offsite Dose Calculation Manual (ODCM) l,imits for 15 minutes or longer EAL:
AA1.3 Alert Confirmed sample analyses for gaseous or liquid releases indicate concentrations or release rates > 200 x ODCM limits for::: 15 min. (Note 2)
Note 2: The Emergenc y Director shou!d not wait until the applicable time has elapsed but should declare the event as soon as it is determined tr,e.t i'he rel:;iase duration has exceeded, or wi!l likely exceed, the applicable time. In the absence of data to the contrary, assume that the release duration has exceeded the applicable time if an ongoing release is detected and the release start time is unknown.
Mode Applicabmty:
All NEI 99-01 Basis:
The Emergency Director should not wait until the applicable time has elapsed but should dedare the event as soon as it is dstsrmined that the condition will Hkeiy exceed the applicable time.
This EAL addresses an actual or substantial potential decrease in the level of safety of the plant as indicated by a radiological release that exceeds regulatory commitments for an extended period of time.
Nuclear power plants incorporate features intended to control the release of radioactive effluents. to the environment. Further, there are administrative controls established to prevent unintentional releases, or control and monitor intentional releases. The occurrence of extended, uncontrolled radioactive releases to the environment is indicative of a degradation in these features and/or controls.
IPEC NON-QUAL ITY EMERGE NCY RELATED IP-EP-AD13 Revision 22 PLAN PROCEDURE ADMINISTRATIVE i------------1----,-----+------,-----1 PROCEDURES REFERENCE USE Page 44 of 309 Attachmen t 1 - Emergency Action Level Bases The release rate multiples are specified in AU1 .3 and AA 1.3 only to distinguish between non-emergency conditions, and from each other. While these multiples obviously correspond to an off-site dose or dose rate, the emphasis in classifying these events is the degradation in the level of safety of the plant, not the magnitude of the associated dose or dose rate.
This EAL includes any release for which a radioactivity discharge permit was not prepared, or a release that exceeds the conditions (e.g., minimum dilution flow, maximum discharge flow, alarm set-points, etc.) on the applicable permit.
This EAL addresses uncontrolled releases that are detected by sample analyses, particularly on unmonitored pathways, '3.g., spills of radioactive liquids into storm drains, heat exchange r leakage in river water systems, etc.
IPEC Basis:
Confirmed sample analyses in a.x.csss of two hundred times the site Offsite Dose Caicu!ation Manual (ODCM) limits ( ref. 1) that continue for 15 minutes or longer represent an uncontroiled situation and hence, a potential substantial degradation in the level of safety. This event escalates from the Unusual Event by raising tl1e magn:tude of the release by a factor of 100 over the Unusual Event level (i.e., 200 times ODCM).
The required release duration was reduced to 15 minutes in recognition of the raised severity.
IPEC Basis Reference(s):
IPEC NON-QUA LITY EMERG ENCY RELATED IP-EP-A D13 Revision 22 PLAN PROCEDU RE ADMINIS TRATIVE ------ ------ ---,-- -.---- -.---- ---1 PROCED URES REFEREN CE USE Page 45 of 309 Attachm ent 1 - Emergen cy Action Level Bases Category: A - Abnorma l Rad Release / Rad Effluent Subcategory: 1 - Offsite Rad Conditio*ns Initiating Condition: Offsite dose resulting from an actual or imminen t release of gaseous radioacti vity greater than 100 mRem TEDE or 500 mRem thyroid COE for the actual or projected duration of the release EAL:
AS1.1 Site Area Emerge ncy Any valid radiation monitor reading that exceeds Table A-1 column "SAE" for 2: 15 min.
(Note 1)
[ Table A-i Effluent Monitor Classification Thresho lds
=== ===== ==-.,,; ==.=-=*=-=-*==== 1==-=- ==-
;:==== ,!===-= ====*-~ =-===*- ====--= ==l='===== ===ci
' Alert
===== ===== ii UE r§ R-27 7 5 E+07 µCi/sec I 7 5 f::i 06 µCi/sec 1.4 E+06 µCi/sec
===== ===== !I 2.5 E+05 µCi/sec (2.3 E ~oo µCi/cc) I {2.3 f.-01 µCi/cc) (4.2 E-02 µCi/cc) (8.0 E-03 µCi/cc)
Il R-44 [14]
*--l-------1----------------<1 NIA
-4!-----+--------+-------------1------
i I
NIA 4.2 E-02 µCi/cc 8.0 E-03 µCi/cc
---+---*------ll
- £ I R-54 [18] N/A N/A 4.0E-02 µCi/cc 2.SE-03 µCi/cc
!fl
=1 R-49 [19] N/A N/A 5.8E-02 µCi/cc 5.8E-04 µCi/cc Note 1: The Emergenc y Director should not wait until the applicable time has elapsed but should declare the event as soon as it is determine d that the condition will likely exceed the applicable time. IF dose assessme nt results are available, THEN declaratio n should be based on dose assessme nt instead of radiation monitor values.
(See EA AS2.1.AG1 .2) Do not delay declaration awaiting dose assessme nt results.
Mode Applicability:
All NEI 99-01 Basis:
This EAL addresse s radioactivity releases that result in doses at or beyond the site boundar y
that exceed 10% of the EPA Protective Action Guides (PAGs). Releases of this magnitud e are associated with the failure of plant systems needed for the protection of the public.
IPEC NON-Q UALIT Y EMER GENC Y RELATED IP-EP -AD13 Revis ion 22 PLAN PROCEDURE ADMI NISTR ATIVE f - - - - - - - - f - - - ~ - - - - - -
,-----1 PROC EDUR ES REFERENCE USE Page 46 of 309 Attach ment 1 - Emerg ency Action Level Bases While these failure s are addre ssed by other EALs, this EAL provid es appro priate divers ity and addre sses event s which may not be able to be classified on the basis of plant status alone . It is impor tant to note that for the more sever e accide nts the releas e may be unmo nitore d or there may be large uncer taintie s assoc iated with the sourc e term and/o r meteo rology .
The EPA PAGs are expre ssed in terms of the sum of the effect ive dose equiv alent {EDE ) and the comm itted effect ive dose equiva lent (CEDE ), or as the thyroi d comm itted dose equiv alent (COE ). For the purpo se of these IC/E~Ls, the dose quant ity total effect ive dose equiv alent
{TEDE ); as define d in 10 CFR 20, is used in lieu of " ... sum of EDE and CEDE .... " The EPA PAG guida nce provid es for the use adult thyroid dose conve rsion factor s.
Tl1e TEDE dose is set at 10'3/.:; of the EPA ?AG, while the 500 mRem thyroi d COE was estab lished in consid eratio n cf the 1:5 ratio of the EPA PJvG for TEDE and thyroi d COE.
The site specif ic monit or list inc!ud es efflue nt monito rs on all poten tial mleas e pathw ays.
Since dose asses smen t is based en c1ctual meteo rology , where as the monit or readin g EAL is not, the result s from these asses smen ts may indicate that the classi ficatio n is not warra nted, or may indica te that a highe r classi ficatio n is warra nted. For this reason, emerg ency imple menti ng proce dures call for the timely perfor mance of dose asses smen ts using actua l meteo rology and release inform ation. If the results of these dose asses smen ts are availa ble when the classi ficatio n is made (e.g., initiated at a lower classi fication level), the dose asses smen t result s overri de the monit or readin g EAL.
IPEC Basis:
None IPEC Basis Reference(s):
IPEC NON-QU ALITY EMERG ENCY RELATED IP-EP-A D13 Revision 22 PLAN PROCEDURE ADMIN ISTRAT IVE 1 - - - - - - - - - - ~ - - + - - - - , - - - - - l PROCE DURES REFERENCE USE Page 47 of 309 Attachm ent 1 - Emerge ncy Action Level Bases Category: A - Abnormal Rad Release I Rad Effluent Subcategory: 1 - Offsite Rad Conditions Initiating Condition: Offsite dose resulting from an actual or immine nt release of gaseou s radioactivity greater than 100 mRem TEDE or 500 mRem thyroid COE for the actual or projected duration of the release EAL:
AS1.2 Site Area Emergency Dose assess ment using actual meteor ology indicates doses > 100 mRem TEDE or
> 500 mRem thyroid COE at or beyond the site boundary Mode Applicability:
All NE! 99-01 Basis:
This EAL addres ses radloacUvity mlease s that resuit in doses at or beyond the site bounda ry that exceed 10% of the EPA Protective Action Guides (PA Gs). Releases of this mag:,itu de are associated with the failure of plant systems needed for the pmtection of the public.
While these failures are addressed by other EALs, this EAL provides approp riate diversit y and address es events which may not be able to be classified on the basis of plant status alone. It is importa nt to note that for the more severe accidents the release may be unmoni tored or there may be large uncertainties associated with the source term and/or meteor ology.
The EPA PAGs are expressed in terms of the sum of the effective dose equival ent (EDE) and the committed effective dose equivalent (CEDE), or as the thyroid commit ted dose equival ent (COE). For the purpose of these IC/EALs, the dose quantity total effective dose equival ent (TEDE), as defined in 10 CFR 20, is used in lieu of " ... sum of EDE and CEDE.
... " The EPA PAG guidanc e provides for the use adult thyroid dose conversion factors.
The TEDE dose is set at 10% of the EPA PAG, while the 500 mRem thyroid COE was established in consideration of the 1:5 ratio of the EPA PAG for TEDE and thyroid COE.
IPEC NON-QUAL ITY EMERGE NCY RELATED IP-EP-AD13 Revision 22 PLAN PROCEDURE ADMINIST RATIVE -------+-----r----+-----,----1 PROCEDU RES REFERENCE USE Page 48 of 309 Attachmen t 1 - Emergency Action Level Bases Since dose assessme nt is based on actual meteorology, whereas the monitor reading EAL is not, the results from these assessments may indicate that the classification is not warranted , or may indicate that a higher classification is warranted. For this reason, emergency implementing procedures call for the timely performance of dose assessments using actual meteorology and release information. If the results of these dose assessments are available when the classification is made (e.g., initiated at a lower classification level), the dose assessme nt results override the monitor readlng EAL.
IPEC Basis:
The dose assessme nt (ref. 1) EALs are based on a Site Boundary dose rate of 100 mRem/hr.
TEDE or 500 mRem/hr. COE thymid. vvhicriever is more limiting. Actuai meteorology is specifically identified since it gives the mcf>t accurate dose assessment. Actual meteorolo gy (including forecasts) should be used whenever possible.
IPEC Basis Reference(s):
- 1. lP-EP-3*10, "Dose Assessment"
IPEC NON-QUALITY EMERG ENCY RELATED IP-EP-AD13 Revision 22 PLAN PROCEDURE ADMINISTRATIVE 1 - - - - - - - t - - - - . - - - - - + - - - - - . - - - - - l PROCEDURES REFERENCE USE Page 49 of 309 Attachm ent 1 - Emergency Action Level Bases Category: A - Abnormal Rad Release I Rad Effluent Subcategory: 1 - Offsite Rad Conditions Initiating Condition: Offsite dose resulting from an actual or imminent release of gaseous radioactivity greater than 100 mRem TEDE or 500 mRem thyroid COE for the actual or projected duration of the release EAL:
AS1.3 Site Area Emerge ncy Field survey indicates closed window dose rate > 100 mRem/hr. that is expected to continue for~ 1 hr. at or beyond the site boundary OR Field survey sample analysis indicates thyroid COE of> 500 mRem for 1 hr. of inhalation at or beyond the site boundar y (Note 1)
Nole 1: The Emergenc y Director sh0uld noi wait until the applicable time has elapsed, but should declare the event ;.is soon as it is determined that the Gondition will likeiy exceed the applicable time. IF dose assessme nt results are available, THEN declaratio n s'.1ould be based on dose assessme nt instead of radiation monitor values.
(See EAL AS1 .2/AG1 .2) Do not delay d~c!aration awaiting dose assessme nt results.
Mode Applicability:
All NEI 99-01 Basis:
This EAL addresses radioactivity releases that result in doses at or beyond the site boundary that exceed 10% of the EPA Protective Action Guides (PAGs). Releases of this magnitude are l
associated with the failure of plant systems needed for the protection of the public.
While these failures are addressed by other EALs, this EAL provides appropriate diversity and addresses events which may not be able to be classified on the basis of plant status alone. It is important to note that for the more severe accidents the release may be unmonitored or there may be large uncertainties associated with the source term and/or meteorology.
IPEC NON-QUALITY EMERGENC Y RELATED IP-EP-AD13 Revision 22 PLAN PROCEDURE ADMINISTR ATIVE f - - - - - - - - - + - - - r - - - - - - - + - - - - - - - - . - - - 1 PROCEDUR ES REFERENCE USE Page 50 of 309 Attachment 1 - Emergency Action Level Bases The EPA PA Gs are expressed in terms of the sum of the effective dose equivalent (EDE) and the committed effective dose equivalent (CEDE), or as the thyroid committed dose equivalent (CDE). For the purpose of these IC/EALs, the dose quantity total effective dose equivalent (TEDE), as defined in 10 CFR 20, is used in lieu of" ... sum of EDE and CEDE .... " The EPA PAG guidance provides for the use adult thyroid dose conversion factors.
The TEDE dose is set at 10% of the EPA PAG, while the 500 mRem thyroid CDE was established in consideration of the 1:5 ratio of the EPA PAG for TEDE and thyroid CDE.
IPEC Basis:
The 500 mRem integrated COE thyroid dose was established in consideration of the 1:5 ratio of the EPA Protective Action Guidelinas for TEDE and thyroid exposure. In establishing the field survey emergency action ievals, 8 duration of one ho'Jr is assumed (ref. 1, 2). TheiefOie, the dose rate EALs are based on a Site Boundary dose rat a of 100 mRemihr. TEDE or 500 mRem for 1 hour1.157407e-5 days <br />2.777778e-4 hours <br />1.653439e-6 weeks <br />3.805e-7 months <br /> of inhalation COE thyroid, whichever is rnore limiting.
IPEC Basis Reference(s):
- 1. IP-EP-320 "Radiological Field Monitoring"
- 2. IP-EP-310 "Dose Assessment"
IPEC NON-QU ALITY EMERGENCY RELATED IP-EP-AD13 Revision 22 PLAN PROCEDURE ADMINISTRATIVE 1---------+----,-------1----
--r---i PROCEDURES REFERENCE USE Page 51 of I 309 Attachment 1 - Emergency Action Level Bases Category: A - Abnormal Rad Release / Rad Effluent Subcategory: 1 - Offsite Rad Conditions Initiating Condition: Offsite dose.resulting from an actual or imminent release of gaseou s radioactivity greater than 1,000 mRem TEDE or 5,000 mRem thyroid COE for the actual or projected duration of the release using actual meteorology EAL:
AG1 .1 General Emergency Any valid radiation monitor reading > Table A-1 column "GE" for;?; 15 min. (Note 1)
Table A-1 Effluent Monitor Classification Thresholds
' Monitor GE SAE Alert UE 7.5 E+07 µCi/sec 7.5 E+06 µCi/sec 1.4 E+06 µCi/sec 2.6 E+05 µCi/sec rn
- I R-27 (2.3 E+00 µCi/cc) 0 (2.3 E-01 µCi/cc) (4.2 E-02 µCi/cc) (8.0 E-03 µCi/cc)
Q) rn n,
C, R-44 [14] N/A N/A 4.2 E-02 µCi/cc 8.0 E-03 µCi/cc i
"C R-54 [18] N/A N/A 4.0E-02 µCi/cc 2.5E-03 µCi/cc
- 5 C'"
J1
' R-49
[19] N/A N/A 5.8E-02 µCi/cc 5.8E-04 µCi/cc Note 1: The Emergen cy Director should not wait until the applicable time has elapsed, but should declare the event as soon as it is determined that the condition will likely exceed the applicab le time. IF dose assessm ent results are available, THEN declarati on should be based on dose assessm ent instead of radiation monitor values.
(See EAL AS1 .2/AG1 .2) Do not delay declaration awaiting dose assessm ent results.
Mode Applicability:
All NEI 99-01 Basis:
This EAL addresses radioactivity releases that result in doses at or beyond the site bounda ry that exceed the EPA Protective Action Guides (PAGs). Public protective actions will be
IPEC NON-QUAL ITY EMERGE NCY RELATED IP-EP-AD13 Revision 22 PLAN PROCEDURE ADMINIST RATIVE i-------------,----t------,-----j PROCEDU RES REFERENCE USE Page 52 of 309 Attachmen t 1 - Emergency Action Level Bases necessary. Releases of this magnitude are associated with the failure of plant systems needed for the protection of the public and likely involve fuel damage.
While these failures are addressed by other EALs, this EAL provides appropriate diversity and addresses events which may not be able to be classified on the basis of plant status alone. It is important to note that for the more severe accidents the release may be unmonitored or there may be large uncertainties associated with the source term and/or meteorology.
The EPA PA Gs are expressed in terms of the sum of the effective dose equivalent (EDE) and the committed effective dose equivalent (CEDE), or as the thyroid committed dose equivalen t (COE). For the purpose of these !C/EALs, the dose quantity total effective dose equivalen t (TEDE), as defined in 10 CFR 20, is used in Heu of " ... sum of EDE and CEDE. ... " The EPA PAG guidance provides tor the usa adult thymid dose conversion factors. However, NYS has decided to calculate chiid thyroid COE. Utility IC/EALs aie cJnsistent with those of the states involved in the facilities emergenc y planning zone.
The TEDE dose is set at the EPA PAG, while the 5000 mRem thyroid COE was established in consideration of the ; :5 ratio of the EPA PAG for TEDE and thyroid COE.
The monitor list includes effluent monitors on all potential release pathways.
Since dose assessment is based on actual meteorology, whereas the monitor reading EAL is not, the results from these assessments may indicate that the classification is not warranted, or may indicate that a higher classification is warranted. For this reason, emergency implementing procedures should call for the timely performance of dose assessments using actual meteorology and release information. If the results of these dose assessments are available when the classification is made (e.g., initiated at a lower classification level), the dose assessme nt results override the monitor reading EAL.
IPEC Basis:
The General Emergency effluent monitor threshold is one decade greater than the Site Area Emergenc y value (ref. 1).
IPEC Basis Reference(s):
- 1. EP-EALCALC-IPEC-1001, Revision 2, Radiological Gaseous Effluent EAL Values
IPEC NON-QUALITY EMERGENC Y IP-EP-AD13 RELATED Revision 22 PLAN PROCEDURE ADMINISTRATIVE 1--------+-----,----+-----,------1 PROCEDURES REFERENCE USE Page 53 of 309 Attachment 1 - Emergency Action Level Bases Category: A - Abnormal Rad Release I Rad Effluent Subcategory: 1 - Offsite Rad Conditions Initiating Condition: Offsite dose resulting from an actual or imminent release of gaseous radioactivity greater than 1,000 mRem TEDE or 5,000 mRem thyroid COE for the actual or projected duration of the release using actual meteorology EAL:
AG1.2 General Emergency Dose assessment using actual meteorology indicates doses> 1,000 mRem TEDE or
> 5,000 mRem thyroid COE at or beyond the site boundary Mode Applicability:
All NEI 99-01 Basis:
This EAL addresses radioactivity releases that result in doses at or beyond the site boundary that exceed the EPA Protective Action Guides (PAGs). Public protective actions will be necessary. Releases of this magnitude are associated with the failure of plant systems needed for the protection of the public and likely involve fuel damage.
While these failures are addressed by other EALs, this EAL provides appropriate diversity and addresses events which may not be able to be classified on the basis of plant status alone. It is important to note that for the more severe accidents the release may be unmonitored or there may be large uncertainties associated with the source term and/or meteorology.
The EPA PAGs are expressed in terms of the sum of the effective dose equivalent (EDE) and the committed effective dose equivalent (CEDE), or as the thyroid committed dose equivalent (COE). For the purpose of these IC/EALs, the dose quantity total effective dose equivalent (TEDE), as defined in 10 CFR 20, is used in lieu of " ... sum of EDE and CEDE .... " The EPA PAG guidance provides for the use adult thyroid dose conversion factors. However, NYS has decided to calculate child thyroid COE. Utility IC/EALs are consistent with those of the states involved in the facilities emergency planning zone.
...*. *****--** ~- .. -* .. -** *****-****~** - --**--**** ***--******-*-*--- *.. ***-****-------***--*- *--* -**, . ---- ......... _...... **-- ***- - - - ...-..... *............... *-- ******** ****-**'"' ***********-** .. ******
IPEC NON-QUAL ITY EMERGENCY RELATED IP-EP-AD13 Revision 22 PLAN PROCEDURE ADMINISTRATIVE 1--------1-------1----~--1 PROCEDURES REFERENCE USE Page 54 of 309 Attachment 1 - Emergency Action Level Bases The TEDE dose is set at the EPA PAG, while the 5000 mRem thyroid COE was established in consideration of the 1:5 ratio of the EPA PAG for TEDE and thyroid COE.
The site specific monitor list includes effluent monitors on all potential release pathways.
Since dose assessment is based on actual meteorology, whereas the monitor reading EAL is not, the results from these assessments may indicate that the classification is not warranted, or may indicate that a higher classification is warranted. For this reason, emergency implementing procedures call for the timely performance of dose assessments using actual meteorology and release infonnation. If the resuits of these dose assessments are available when the classification is made (e.g., initiated at a lower classification level), the dose assessment results override the monitor reading EAL.
IPEC Basis:
The General Emergency dose assessment (ref. 1) values are based on the boundary dose resulting from an actual or imminent release of gaseous radioactivity that exceeds 1,000 mRem TEDE or 5,000 mRem COE thyroid for the actual or projected duration of the release.
Actual meteorology is specifically identified since it gives the most accurate dose assessment.
Actual meteorology should be used whenever possible.
IPEC Basis Reference{s):
- 1. IP-EP-310, "Dose Assessment"
IPEC NON-QUA LITY EMERG ENCY RELATED IP-EP-AD13 Revision 22 PLAN PROCEDURE ADMINIS TRATIVE , _ _ - - - - - - - ~ - - - - ~ - -
PROCED URES REFERENCE USE Page 55 of 309 Attachm ent 1 - Emergency Action Level Bases Category: A - Abnormal Rad Release / Rad Effluent Subcategory: 1 - Offsite Rad Conditions Initiating Condition: Offsite dose resulting from an actual or imminent release of gaseous radioactivity greater than 1,000 mRem TEDE or 5,000 mRem thyroid COE for the actual or projected duration of the release using actual meteoro logy EAL:
AG1.3 General Emergency Field survey results indicate closed window dose rates> 1,000 mRem/hr. expected to continue for.:::. 1 hr. at or beyond the site boundary OR Analyses of field survey samples indicate thyroid COE of> 5,000 mRem for 1 hr. of inhalation at or beyono trie si*te boundary (Note 1)
Note 1: The Emergenc y Director ;:;hould not wait until the applicable time has elapsed, but should declare the event as soon as it is determine d that the condition will iikely exceed the applicable time. IF dose assessme nt results are available, THEN dec'3ratio n should be based on dose assessme nt instead of radiation monitor values.
(See EAL AS1 .2/AG1 .2) Do not de!ay declaration awaiting dose assessme nt results.
Mode Applicability:
All NEi 99-01 Basis:
This EAL addresses radioactivity releases that result in doses at or beyond the site boundar y that exceed the EPA Protective Action Guides (PAGs). Public protective actions will be necessary. Releases of this magnitude are associated with the failure of plant systems needed for the protection of the public and likely involve fuel damage.
While these failures are addressed by other EALs, this EAL provides appropriate diversity and addresses events which may not be able to be classified on the basis of plant status alone. It is important to note that for the more severe accidents the release may be unmonitored or there may be large uncertainties associated with the source term and/or meteorology.
IPEC NON-QU ALITY EMERG ENCY RELATED IP-EP-AD13 Revision 22 PLAN PROCEDURE ADMINISTRATIVE 1 - - - - - - - - - - - - - - + - - - ~ - - - 1 PROCEDURES REFERENCE USE Page 56 of 309 Attachment 1 - Emergency Action Level Bases The EPA PA Gs are expressed in terms of the sum of the effective dose equivalent (EDE) and the committed effective dose equivalent (CEDE), or as the thyroid committed dose equivalent (COE). For the purpose of these IC/EALs, the dose quantity total effective dose equival ent (TEDE), as defined in 10 CFR 20, is used in lieu of" ... sum of EDE and CEDE ....
" The EPA PAG guidance provides for the use adult thyroid dose conversion factors. Howeve r, NYS has decided to calculate child thyroid COE. Utility IC/EALs are consistent with those of the states involved in the facilities emergency planning zone.
The TEDE dose is set at the EPA PAG, while the 5000 mRem thyroid COE was established in consideration of the 1 :5 ratio of the EPA PAG for TEDE and thyroid COE.
IPEC Basis:
The 5,000 mRem integrated CDE thyroid dcse \Nas established in consideration of the 1:5 ratio of the EPA Protective Action Guidelines for TEDE and thyroid exposure. In establis hing the dose rate emergency ac!.i0n levals, a duration of one hour is assumed (ref. 1, 2).
Therefore, the dose rate EALs arB based on a Site Boundary dose rate of 1000 mRem/hr. TEOE or 5000 rnRem for 1 hour1.157407e-5 days <br />2.777778e-4 hours <br />1.653439e-6 weeks <br />3.805e-7 months <br /> of intialation COE thyroid, whichever is more limiting.
- IPEC Basis Reference(s):
- 1. IP-EP-320 "Radiological Field Monitoring"
- 2. IP-EP-310 "Dose Assessment"
IPEC NON-QU ALITY EMERG ENCY RELATED IP-EP-A D13 Revision 22 PLAN PROCEDURE ADMIN ISTRAT IVE 1-------1---.....----+------,---
--1 PROCE DURES REFERENCE USE Page 57 of 309 Attachm ent 1 - Emergency Action Level Bases Category: A - Abnorm al Rad Release I Rad Effluen t Subcategory: 2 - Onsite Rad Conditions & Irradiated Fuel Events Initiating Condition: Unplan ned rise in plant radiation levels EAL:
AU2.1 Unusual Event Unplanned low water level or alarm indicating uncontrolled water level decrea se in the refueling cavity, SFP or fuel transfe r canal AND Valid area radiation monitor reading rise on any of the following:
- R-2/R-7 Vapor Contain ment Area. Monitors
- R-5 Fuel Storage Building Area Monitor
- R-25/R-26 Vapor Contain ment High Radiation Area Monitor s Mode Applicability:
All NEI 99-01 Basis:
This EAL address es increased radiation levels as a result-of water level decreas es above irradiated fuel or events that have resulted, or may result, in unplanned increas es in radiation dose rates within plant buildings. These radiation increases represe nt a loss of control over radioactive material and represe nt a potential degradation in the level of safety of the plant.
Indications may include instrumentation such as water level and local area radiatio n monitors, and personnel (e.g., refueling crew) reports. If available, video camera s may allow remote ,
observation. Depending on available level instrumentation, the declaration thresho ld may need to be based on indicatjons of water makeup rate or decreas e in water storage tank level.
In light of Reacto r Cavity Seal failure incidents at two different PWRs and loss of water in the Spent Fuel Pit/Fuel Transfe r Canal at a BWR, explicit coverage of these types of events via this threshold is appropriate given their po!ential for increased doses to plant staff.
IPEC NON-QUA LITY EMERGENCY RELATED IP-EP-AD13 Revision 22 PLAN PROCEDURE ADMINISTRATIVE 1------1--~---1----
~--i PROCEDURES REFERENCE USE Page 58 of 309 Attachment 1 - Emergency Action Level Bases The refueling pathway is a site specific combination of cavities, tubes, canals and pools. While a radiation monitor could detect an increase in dose rate due to a drop in the water level, it might not be a reliable indication of whether or not the fuel is covered.
For example, a refueling bridge ARM reading may increase due to planned evolutions such as head lift, or even a fuel assembly being raised in the manipulator mast. Also, a monitor could in fact be properly responding to a known event involving transfer or relocation of a source, stored in or near the fuel pooi oi respond1ng to a planned evolution such as removal of the reactor head. Generally, lncreased radiation monitor indications will need to combined with another indicator (or personnel report) of water loss.
For refueling events where the water level drops beiow th0 RPV flange classification *would be via CU2.1. This event esi::alates to an /l.!eit per A!\2.1 if irradiated fue! outside the reactor vessel is uncovered. For events invoiving irradiated fue! in the reactor vessel, escalation would be via the Fission Product Ban-ier Tabie for events in operating modes *1-3.
iPEC Basis:
Loss of inventory from the refueling cavity, SFP or fuel transfer canal may reduce water shielding above spent fuel and cause unexpected increases in plant radiation. Classification as an Unusual Event is warranted as a precursor to a more serious event.
On Unit 2, the SFP Technical Specification minimum water level is 92' 2". The SFP low water level alarm set-point is 93' 3". Water level restoration instructions for loss of refueling cavity water level during refueling are performed in accordance with 2-AOP-FH-1.
On Unit 3, the SFP low water level alarm set-point is actuated by LC-650. Water level restoration instructions for loss of refueling cavity water level during refueling are performed in accordance with 3-AOP-FH-1.
IPEC NON-QUA LITY EMERG ENCY RELATED IP-EP-AD13 Revision 22 PLAN PROCEDURE ADMINISTRATIVE 1--- ---- ---,- ---- ---,- ---1 PROCEDURES REFERENCE USE Page 59 of 309 Attachment 1 - Emergency Action Level Bases When the fuel transfer canal is directly connected to the SFP and reactor cavity, there could exist the possibility of uncovering irradiated fuel in the fuel transfer canal. Therefore, this EAL is applicable for conditions in which irradiated fuel is being transferred to and from the RPV and SFP.
The listed radiation monitors are those likely to be affected by the loss of inventory from the reactor cavity, SFP and fuel transfer canal.
This event escalates to an Alert if irradiated fuel outside the reactor vessel is uncovered or damaged. For events involving irradiated fuel in the reactor vessel, escalation would be via the fission product barrier matrix Post Unit 2 and Unit 3 Shutdown:
R-2/R-7, R-25/R-2 6 are not applicable.
IPEC Basis Reference{s}:
._s
- 1. 2-AOP-FH-1, "Fue! Damage or Loss of SFP/RefueHng C~vity Level"
- 2. 3-AOP-FH-1, "Fuel Damage or Loss of SFP/RefueHng Cavity Level
IPEC NON-QUALITY EMERGENC Y RELATED IP-EP-AD13 Revision 22 PLAN PROCEDURE ADMINISTRATIVE t----------t------~--f----~---1 PROCEDURES REFERENCE USE Page 60 of 309 Attachment 1 - Emergency Action Level Bases Category: A - Radioactivity Release I Area Radiation Subcategory: 2 - Onsite Rad Conditions & Irradiated Fuel Events Initiating Condition: Unplanned rise in plant radiation levels EAL:
AU2.2 Unusual Event Unplanned valid area radiation monitor reading or survey results increase by a factor of 1,000 over normal levels*
- Normal levels can be considered as the highest reading in the past 24 hours2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br /> excluding the current peak value Mods Applicability:
All NEI 99-01 Basis:
This EAL addresses increased radiation ieve!s as a result of water level decreases above irradiated fuel or events that have resulted, or may result, in unplanned increases in radiation dose rates within plant buildings. These radjation increases represent a loss of control over radioactive material ancl represent a potential degradation in the levei of safety of the plant.
This EAL addresses increases in plant radiation levels that represent a loss of control of radioactive material resulting in a potential degradation in the level of safety of the plant.
This EAL excludes radiation level increases that result from planned activities such as use of radiographic sources and movement of radioactive waste materials. A specific list of ARMs is not required as it would restrict the applicability of the threshold, The intent is to identify loss of control of radioactive material in any monitored area.
IPEC NON-QUAL ITY EMERGE NCY RELATED IP-EP-AD13 Revision 22 PLAN PROCEDURE ADMINISTRATIVE ----- ----~ --1-- --.-- ----i PROCEDURES REFERENCE USE Page 61 of 309 Attachment 1 - Emergency Action Level Bases IPEC Basis:
The ARMs monitor. the gamma radiation levels in units of mR/hr. at selected areas throughout the station. If radiation levels exceed a preset limit in any channel, the Control Room annunciator and local alarms will be energized to warn of abnormal or significantly changing radiological conditions. The alarm limit is normally set at approximately 1O times normal background for each channel. (ref. 1, 2)
Routine and work specific surveys are conducted throughout the station at frequencies specified by the RP Superintendent. Routine surveys are scheduled per the RP Department Surveillance Schedule. Work specific surveys are conducted in accordance with the Radiation Work Permit (RWP).
IPEC Basis Reference(s):
- 1. 2-SOP-12.3.3 Radiation Monitor Set-point Control
- 2. 3-SOP-RM-010 Radiation Monitor Set-point Control
IPEC NON-QUAL ITY EMERGEN CY RELATED IP-EP-AD 13 Revision 22 PLAN PROCEDURE ADMINISTRATIVE i--------+--~---+-----.----1 PROCEDURES REFERENCE USE Page 62 of 309 Attachment 1 - Emergenc y Action Level Bases Category: A - Abnormal Rad Release / Rad Effluent Subcategory: 2 - Onsite Rad Conditions & Irradiated Fuel Events \._
Initiating Condition: Damage to irradiated fuel or loss of water level that has or will result in the uncovering of irradiated fuel outside the reactor vessel EAL:
AA2.1 Alert Damage to irradiated fuel or loss of water level (uncovering irradiated fuel outside the Reactor Vessel) that causes a valid high alarm on any of the following radiation monitors:
- R-2/R-7 Vapor Containment Area Monitors
- R-5 Fuel Storage Building Area Monitor
- R-42[R-12] VC Gas Activity
- R-25/R-26 Vapor Cor;,tainment H1gh Radiation Area Monitors Mode Applicability:
All NEI 99-01 Basis:
This EAL addresses increases in radiation dose rates within plant buildings, and may be a precursor to a radioactivity release to the environmBnt. These events represent a loss of control over radioactive material and represent an actual or substantial potential degradation in the level of safety of the plant.
These events escalate from AU2.1 in that fuel activity has been released, or is anticipated due to fuel heat up. This EAL applies to spent fuel requiring water coverage and is not intended to address spent fuel which is licensed for dry storage.
This EAL addresses radiation monitor indications of fuel uncovery and/or fuel damage.
Increased ventilation monitor readings may be indication of a radioactivity release from the fuel, confirming that damage has occurred. Increased background at the ventilation monitor due to water level decrease may mask increased ventilation exhaust airborne activity and needs to be considered.
IPEC NON-QUALITY EMERGENCY RELATED IP-EP-AD13 Revision 22 PLAN PROCEDURE ADMINISTRATIVE i---------+----.-----+-----.----1 PROCEDURES _ REFERENCE USE Page 63 of 309 Attachment 1 - Emergency Action Level Bases While a radiation monitor could detect an increase in dose rate due to a drop in the water level, it might not be a reliable indication of whether or not the fuel is covered.
For example, a refueling bridge ARM reading may increase due to planned evolutions such as head lift, o~ even a fuel assembly being raised in th~ manipulator mast. Also, a monitor could in fact be properly responding to a known event involving transfer or relocation of a source, stored in or near the fuel pool or responding to a planned evolution such as removal of the reactor head. Generally, increased radiation monitor indications will need to combined with another indicator (or personnel report) of water loss.
Escalation of this emergency classification level, if appropriate, would be based on AS 1.1 or AG1.1.
IPEC Basis:
When consid~ring classification, information may come from:
- Radiation monitor readin~Js
- Sampling and surveys
- Dose projections/calculations
- Reports from the scene regarding the extent of damage (e.g., refueling crew, radiation protection technicians)
This EAL is defined by the specific areas where irradiated fuel is located, such as the refueling cavity or Spent Fuel Pit (SFP). The listed radiation monitors are those likely to be affected by the loss of inventory and/or damaged spent fuel located in the reactor cavity, SFP and fuel transfer canal.
Post Unit 2 and Unit 3 Shutdown: R-2/R-7, R-25/R-26, R-42 are not applicable.
IPEC Basis Reference(s):
- 1. 2-AOP-FH-1, "Fuel Damage or Loss of SFP/Refueling Cavity Level"
- 2. 3-AOP-FH-1, "Fuel Damage or Loss of SFP/Refueling Cavity Level
- 3. 2-SOP-12.3.3 Radiation Monitor Set-point Control
- 4. 3-SOP-RM-010 Radiation Monitor Set-point Control
IPEC NON-QUALITY EMERGENCY RELATED IP-EP-AD13 Revision 22 PLAN PROCEDURE ADMINISTRATIVE t------------..---+-----,------1 PROCEDURES REFERENCE USE Page 64 of 309 Attachment 1 - Emergency Action Level Bases Category: A - Abnormal Rad Release I Rad Effluent Subcategor y: 2 - Onsite Rad Conditions & Irradiated Fuel Events Initiating Condition: Damage to irradiated fuel or loss of water level that has or will result in the uncovering of irradiated fuel outside the reactor vessel EAL:
AA2.2 Alert A water level drop in the reactor cavity, SFP or fuel transfer canal that will result in irradiated fuel becoming uncovered Mode Applicability :
All NE! 99~0'1 Basis:
This EAL addri.3sses increasGs In rad:~tion dose rates withln plant buildings, and may be a precursor to a radioact:vity release tc the P-nvironment. These events represent a loss of control over radioactive materlal and represent an actual or substantial potential degradation in the level of safety of th::~ plant.
These events escalate from AU2. *1 in tt1at fuel activity has been rei&as~d, Oi is anticipated due to fuel heat up. This IC applies to spent fuel requiring water coverage and is not intended to address spent fuel which is licensed for dry storage.
_Indications may include instrumentation such as water level and local area radiation monitors, and personnel (e.g., refueling crew) reports. If available, video cameras may allow remote observation. Depending on available level instrumentation, the declaration threshold may need to be based on indications of water makeup rate or decrease in water storage tank level.
Escalation of this emergency classification level, if appropriate, would be based on AS1 .1 or AG1.1.
IPEC NON-QUALITY EMERGENCY RELATED IP-EP-AD13 Revision 22 PLAN PROCEDURE ADMINISTRATIVE i---------+--------.---+----.,...------l PROCEDURES REFERENCE USE Page 65 of 309 Attachment 1 - Emergency Action Level Bases IPEC Basis:
When considering classification, information may come from:
Cf,) Radiation monitor readings
- Sampling and surveys
- Dose projections/calculations e Reports from the scene regarding the extent of damage (e.g., refueling crew, radiation protection technicians)
If available, video cameras may allow remote observation. Depending on available level indication, the declared threshold may need to be based on indications of makeup rate or decrease in refueling water storage tank !evei.
IPEC Basis Reference(s}:
- 1. 2[3]-AOP-FH-1, "Fuel Damage or Loss of SFP/Refueling Cavity Level"
IPEC NON-QUALITY EMERGENCY RELATED IP-EP-AD13 Revision 22 PLAN PROCEDURE ADMINISTRATIVE - - - - - - + - - - - - - - - - - - - r - - - i PROCEDURES . REFERENCE USE Page* 66 of 309 Attachment 1 - Emergency Action Level Bases Category: A - Abnormal Rad Release I Rad Effluent Subcategory: 3 - CR/CAS Radiation Initiating Condition: Rise in radiation levels within the facility thatimpedes operation of systems required to maintain plant safety functions EAL:
AA3.1 Alert Dose rates > 15 mR/hr. in areas requiring continuous occupancy to maintain plant safety functions:
Control Room (R-1)
All NEI 99-01 Basis:
This EAL addresses increased radiation leve!s that: impact continued operat:on in areas requiring continuous occupancy to maintain safe operation or to perform a sf.lfe shutdown.
The cause and/or magnitude of the increase in radiation levels is not a concern of this EAL.
The Emergency Director must consider the source or cause of the increased radiation levels and determine if any other IC may be involved.
This EAL is not meant to apply to increases in the containment radiation monitors as these are events which are addressed in the fission product barrier table.
The value of 15mR/hr. is derived from the GDC 19 value of 5 rem in 30 days with adjustment for expected occupancy times. Although Section 111.D.3 of NUREG-0737, "Clarification of TMI Action Plan Requirements", provides that the 15 mR/hr. value can be averaged over the 30 days, the value is used here without averaging, as a 30 day duration implies an event potentially more significant than an Alert.
Areas requiring continuous occupancy include the control room and any other control stations that are staffed continuously, such as the security alarm station.
IPEC NON-QUALITY EMERGENC Y RELATED IP-EP-AD13 Revision 22 PLAN PROCEDURE ADMINISTRATIVE 1 - - - - - - - - - ~ - - + - - - - - ~ ~
PROCEDURES REFERENCE USE Page 67 of 309 Attachment 1 - Emergency Action Level Bases IPEC Basis:
Areas that meet this threshold include the Control Room and the Central Alarm Station (CAS).
The security access point is included in this EAL because of its importance to permitting access to areas required to assure safe plant operations.
There are no permanently installed CAS area radiation monitors that may be used to assess this EAL threshold. Therefore these thresholds must be assessed via local radiation survey for the CAS.
IPEC Basis Reference(s):
IPEC NON-QUAL ITY EMERGENCY RELATED IP-EP-AD13 Revision 22 PLAN PROCEDURE ADMINISTRATIVE i-------t-----r----+----r-----
i PROCEDURES REFERENCE USE Page 68 of 309 Attachment 1 - Emergency Action Level Bases Category C - Cold Shutdown / Refueling System Malfunction EAL Group: Cold Conditions (RCS temperature ~ 200°F); EALs in this category are applicable only in one or more cold operating modes.
Category C EALs are directly associated with cold shutdown or refueling system safety functions. Given the variability of plant configurations (e.g., systems out-of-service for maintenance, containment open, reduced AC power redundancy, time since shutdown) during these periods, the consequences of any given initiating event can vary greatly. For example, a loss of decay heat removal capability that occurs at the end of an extended outage has less significance than a similar ioss occurring during the first week after shutdm,vn. Compounding these events is the likelihood that instrumentaticn necessary for assessment may also be inoperable. The coid shutdown and refueling syslem malfunction EALs are based on performance capability to the extent passib!e with consideration given to RCS integrity, Containment Closure, and fuel clad integrity for tr-ie applicable operating med es (4 - Cold Shutdown, 5 - Refuel, D - Defueled).
The events of this category pertain to the following subcategories:
1 . Loss of AC Power Loss of emergency plant electrical power can compromise plant safety system operability including decay heat removal and emergency core cooling systems which may be necessary to ensure fission product barrier integrity. This category includes loss of onsite and offsite sources for 480 VAC safeguards buses.
IPEC NON-QUA LITY EMERG ENCY RELATED IP-EP-AD13 Revision 22 PLAN PROCEDURE ADMINISTRATIVE 1--------+-'---~---1----~--
-1 PROCEDURES REFERENCE USE Page 69 of 309 Attachm ent 1 - Emergency Action Level Bases
- 2. RPV Level RPV water level is a measure of inventory available to ensure adequate core cooling and, therefore
. \
, maintain fuel clad integrity. The RPV provides a volume for the coolant that covers the reactor core. The RPV and associated pressure piping (reactor coolant system) together provide a barrier to limit the release of radioactive material should the reactor fuel I
clad integrity fail.
- 3. RCS Tempera ture Uncontrolled or inadvertent temperature or pressure increases are indicative of a potential loss of safety functions.
- 4. Communications Certain events that degrade plant opBrator ablllty to effectively communicate with essential personnel within or external to the plant warrant emergency classification.
- 5. Inadvertent Critic§lity Inadvertent criticalities pose potential personne! safety hazards as weil being indicative of losses of reactivity control.
- 6. Loss of DC Power Loss of emergen cy plant electrical power can compromise plant safety system operability including decay heat removal and emergency core cooling systems which may be necessary to ensure fission product barrier integrity. This category includes loss of vital 125-Volt DC power sources.
IPEC NON-QUALITY EMERGE NCY RELATED IP-EP-AD 13 Revision 22 PLAN PROCEDURE ADMINIST RATIVE - - - - - - - - - - - - - - ~ -
PROCEDU RES REFERENCE USE Page 70 of 309 Attachmen t 1 - Emergenc y Action Level Bases Category: C - Cold Shutdown / Refueling System Malfunction Subcategory: 1 - Loss of AC Power Initiating Condition: AC power capability to safeguards buses reduced to a single power source for 15 minutes or longer such that any additional single failure would result in loss of all AC power to safeguard s buses EAL:
CU1.1 Unusual Event AC power capability to 480 V safeguards buses (5A, 2A/3A, 6A) reduced to a single power source (Table C-4) for~ 15 min. such that any additional sing!e failure would result in loss of all AC power to safeguard bus6s (Note 3)
Note 3: The Emergency Director should not wait until the applicable time has elapsed, but should declare the event as soon as it is determined that the condition wil! likely exceed the app!ic;:ib!e time.
Tabie C-4 Safeguard Bus AC Power Sources 7[
I Onsite
- -- - j Offsite 7
~---- .
l'* Unit Auxiliary transforme r*
Station Au;<iliary I
480 V EOG 21 11
- I transformer*
I *- . 480 V EOG 22 I
- 13.8 KV gas turbine auto C
- 480 V EOG 23
- > transformer*
- Appendix R Diesel
- With 86P or 86BU tripped, all offsite power supplies must be considered as one power supply.
- Unit Auxiliary transformer
- 480V EOG 31 C"')
- Station Auxiliary transformer
- t!
- 480V EOG 32 C
- 480V EOG 33
- 13W92 feeder
- 13W93 feeder
- Appendix R Diesel Mode Applicabi lity:
5 - Cold Shutdown, 6 - Refuel
IPEC NON-QUALITY EMERGENCY RELATED IP-EP-AD13 Revision 22 PLAN PROCEDURE ADMINISTRATIVE 1--------+--~----~---1 PROCEDURES REFERENCE USE Page 71 of 309 Attachment 1 - Emergency Action Level Bases NEI 99-01 Basis:
The condition indicated by this EAL is the degradation of the off-site and on-site AC power systems such that any additional single failure would result in a station blackout. This condition could occur due to a loss of off-site power with a concurrent failure of all but one emergency generator to supply power to its emergency busses. The subsequent loss of this single power source would escalate the event to an Alert in accordance with CA 1.1.
Fifteen minutes was selected as a threshold to exclude transient or momentary losses of power.
IPEC Basis:
The condition indicated by this EAL would include the degradation of the offsite power with a concurrent failure of all but one emergency generator to supply power to its emergency bus.
Another related condition could be the loss of all offsite power and loss of onsite emergency diesels with only one train of emergency buses being fed from the unit main generator, or the loss of onsite emergency diesels with only one train of emergency buses being fed from offsite power. The subsequent loss of this single power source would result in a loss of all AC to the 480 V safeguards buses.
Indian Point Unit 2 has a blackout/unit trip/no safety injection logic that opens all the normal supply breakers and locks them out from re-closure. The blackout is sensed by under voltage on either 480V Bus SA or 6A. The unit trip is sensed by lockout relays 86P and 86BU.
Therefore, with 86P or 86BU relays tripped, under voltage on Bus SA or 6A (a single failure) would cause a loss of all offsite power to the "essential buses." For the condition where all emergency diesel generators are inoperable when the unit is shut down and relays 86P and 86BU are not reset, a loss of power to either 480V Bus SA or 480V Bus 6A will cause the normal supply breakers to all 480V buses to open.
If emergency bus AC power is reduced to a single source for greater than 15 minutes, an Unusual Event is declared under this EAL.
This cold condition EAL is equivalent to the hot condition loss of AC power EAL SA 1.1.
IPEC NON-QUALITY EMERGENCY RELATED IP-EP-AD13 Revision 22 PLAN PROCEDURE ADMINISTRATIVE ~------+---~-----+---~----l PROCEDURES REFERENCE USE Page 72 of 309 Attachment 1 - Emergency Action Level Bases IPEC Basis Reference(s):
- 1. FSAR Section 8.2
- 2. 2-ECA-0.0, "Loss of All AC Power"
- 3. 3-ECA-0.0, "Loss of All AC _Power
Post Unit 2 and Unit 3 Shutdown:
CU1 .1 is not applicable.
IPEC NON-QUALITY EMERGENCY RELATED IP-EP-AD13 Revision 22 PLAN PROCEDURE ADMINISTRATIV E --------~----~---i PROCEDURES REFERENCE USE Page 73 of 309 Attachment 1 - Emergency Action Level Bases Category: C - Cold Shutdown / Refueling System Malfunction Subcategory: 1 - Loss of AC Power Initiating Condition: Loss of all offsite and all onsite AC power to safeguards buses for 15 minutes or longer EAL:
CA1.1 Alert Loss of all offsite and onsite AC power (Table C-4) to 480 V safeguards buses (SA, 2A/3A, 6A) for~ 15 min. (Note 3)
Note 3: The Emergency Director shouici not wait until the applicable timP, has elapsed, but should declare the event as soon as it is determined that the condition will l:kely exceed the applicable time.
J I Table C-4 .Safeguard Bus AC Power Sources Ons1te Offsite
=
- Unit Auxiliary transformer* \
- Station Auxiliary N_,
- c; 480 V EOG 21 480 V EOG 22 . transformer*
13.8 KV gas turbine auto
- ,
- 480V EOG 23 transformer*
- Appendix R Diesel * .. With 86P or 86BU tripped, all offsite 1 power supplies must be considered as one power supply.
- Unit Auxiliary transformer 480V EOG 31
('t)
'i:
480V EOG 32 480V EOG 33 Appendix R Diesel Station Auxiliary transformer 13W92 feeder 13W93 feeder Mode Applicability:
5 - Cold' Shutdown, 6 - Refueling, D - Defueled
IPEC NON-QUALITY EMERGENCY RELATED IP-EP-AD13 Revision 22 PLAN PROCEDURE ADMINISTRATIVE 1 - - - - - - - - - - ~ - - - - - ~ - - - 1 PROCEDURES REFERENCE USE Page 74 of 309 Attachment 1 - Emergency Action Level Bases NEI 99-01 Basis:
Loss of all AC power compromises all plant safety systems requiring electric power including RHR, ECCS, Containment Heat Removal, Spent Fuel Heat Removal and the Ultimate Heat Sink.
The event can be classified as an Alert when in Cold Shutdown, Refueling, or Defueled mode because of the significantly reduced decay heat and lower temperature and pressure, increasing the time to restore one of the emergency buses, relative to that specified for the Site Area Emergency EAL.
Escalating to Site Area Emergency, if appropriate, is by Abnormal Rad Levels / Radiological Effluent EALs.
Fiftaen minutes was selected as a thrnsho!d to exclude transient or momentary power losses.
IPEC Basis:
This EAL is indicated by the loss of all offoite and onsite AC power to the ~afeguards buses (5A, 2A/3A, 6A).
This EAL is the cold condition equivalent of the hot condition loss of all AC power EAL SS1 .1.
When in Cold Shutdown, Refuel, or Defueled mode, the event can be classified as an Alert because of the significantly reduced decay heat, lower temperature and pressure, increasing the time to restore one of the emergency buses, relative to that existing when in hot conditions.
IPEC Basis Reference(s):
- 1. FSAR Section 8.2
- 2. 2-ECA-0.0, "Loss of All AC Power"
- 3. 3-ECA-0.0, "Loss of All AC Power
IPEC NON-QUALITY EMERGENCY RELATED IP-EP-AD13 Revision 22 PLAN PROCEDURE ADMINISTRATIVE 1----------+--~----4-----------4 PROCEDURES REFERENCE USE Page 75 of 309 Attachment 1 - Emergency Action Level Bases Category: C - Cold Shutdown / Refueling System Malfunction Subcategory: 2 - Reactor Vessel Level Initiating Condition: RCS leakage EAL:
CU2.1 Unusual Event Inability to restore or maintain pressurizer level > 18% or RCS target level band due to RCS leakage for 2: 15 min. (Note 3)
Note 3: The Emergency Director should not wait until the applicable time has elapsed, but should declare the event as soon as it is determined that the condition will likely exceed the applicable time.
Mode Applicability:
5 - Cold Shutdown NEI 99-01 Basis:
This EAL is considered to be a potential degradation of the level of safety of the plant. The inability to maintain or restme level is indicative of loss of RCS inventory.
Relief valve normal operation should be excluded from this EAL. However, a relief valve that operates and fails to close per design should be considered applicable to this EAL if the relief valve cannot be isolated.
Prolonged loss of RCS Inventory may result in escalation to the Alert emergency classification level via either CA2.1 or CA3.1.
IPEC Basis:
The condition of this EAL may be a precursor of more serious conditions and, as a result, is considered to be a potential degradation of the level of safety of the plant. When pressurizer level drops to 18% [18.87% (rounded to 18% for Unit 3)] of span. (low level alarm set-point),
level is well below the normal control band (ref. 1, 2).
IPEC NON-QUALITY EMERGENC Y RELATED IP-EP-AD13 Revision 22 PLAN PROCEDURE ADMINISTRATIVE 1 - - - - - - - - - - - ~ - - + - - - - ~ - - - i PROCEDURES REFERENCE USE Page 76 of 309 Attachment 1 - Emergency Action Level Bases This Cold Shutdown EAL represents the hot condition EAL SU6.1, in which RCS leakage is associated with Technical Specification limits. In Cold Shutdown, these limits are not applicable; hence; the use of pressurizer level as the parameter of concern in this EAL.
IPEC Basis Reference(s):
- 1. 2-ARP-SAF Pressurizer Low Level
- 2. 3-ARP-003 Pressurizer Low Level Post Unit 2 and Unit 3 Shutdown:
CU2.1 is not applicable.
IPEC NON-QUAL ITY EMERGE NCY RELATED IP-EP-AD13 Revision 22 PLAN PROCEDURE ADMINISTRATIVE t - - - - - - - - + - - - - - - , - - - - + - - - ~ - -
PROCEDURES REFERENC E USE Page 77 of 309 Attachment 1 - Emergency Action Level Bases Category: C - Cold Shutdown / Refueling System Malfunction Subcategory: 2 - Reactor Vessel Level Initiating Condition: RCS Leakage EAL:
CU2.2 Unusual Event Unplanned reactor vessel level drop below vessel flange (69' elev.- RVLIS 83%) (or RCS target level band if the RCS level was procedurally being controlled below the vessel flange) for~ 15 min. (Note 3)
Note 3: The Emergency Director should not wait until the applicable time has elapsed, but should declare the event as soon as it is determined that the condition will likely exceed rhe applicable time.
Mode Applicability:
6 - Refueling NEI 99-01 Basis:
This EAL is a precursor of more serious conditions and considered to be a potential degradation of the level of safety of the plant.
Refueling evolutions that decrease RCS water !evel below the RPV flange are carefully planned and procedurally controlled. An unplanned event that results in water level decreasing below the RPV flange, or below the planned RCS water level for the given evolution (if the planned RCS water level is already below the RPV flange), warrants declaration of an Unusual Event due to the reduced RCS inventory that is available to keep the core covered.
The allowance of 15 minutes was chosen because it is reasonable to assume that level can be restored within this time frame using one or more of the redundant means of refill that should be available. If level cannot be restored in this time frame then it may indicate a more serious condition exists.
Continued loss of RCS Inventory will result in escalation to the Alert emergency classification level via either CA2.1 or CA3.1.
IPEC NON-QUALITY EMERGENCY RELATED IP-EP-AD13 Revision 22 PLAN \.,
PROCEDURE ADMINISTRATIVE r---------r-----r-----;----~----t PROCEDURES REFERENCE USE Page 78 of 309 Attachment 1 - Emergency Action Level Bases The difference between CU2.1 and CU2.2 deals with the RCS conditions that exist between cold shutdown and refueling modes. In cold shutdown the RCS will normally be intact and standard RCS inventory and level monitoring mearis are available. In the refueling mode the RCS is not intact and RPV level and inventory are monitored by different means.
This EAL involves a decrease in RCS level below the top of the RPV flange that continues for 15 minutes due to an unplanned event. This EAL is not applicable to decreases in flooded reactor cavity level, which is addressed by AU2.1, until such time as the level decreases to the level of the vessel flange.
If RPV level continues to decrease and reaches the Bottom ID of the RCS hot leg then escalation to CA2.1 would be appropriate.
IPEC Basis:
Unit 2 The Reactor Vessel flange mating surfac: 1.3 is at 69' - RVUS 83% {ref. 1). RCS elevations are illustrated in Figure C-3 (ref. 1). RCS level can be monitored by one or more of the following
{ref. 1 ):
a Barton level system
- Tygon level system o Mansell Level Monitoring System (MLMS) o Intermediate range RCS level indicator (LT-7610)
IPEC NON-QUALITY EMERGENCY RELATED IP-EP-AD13 Revision 22 PLAN PROCEDURE ADMINISTRATIVE r--------+---.-----t---""--T""------i PROCEDURES REFERENCE USE Page I 79 ot I 309 Attachment 1 - Emergency Action Level Bases Unit3 The Reactor Vessel flange mating surface is at 69' - RVLIS 83% (ref. 2). RCS level can be monitored by one or more of the following (ref. 2):
- 32 & 34 Intermediate Leg Level Indicators (ILLI)
- Hand Held Ultrasonic Transducers
- Mansell Level Monitoring System
- Intermediate range RCS level indicator (LT-7610)
- RVLIS Post Unit 2 and Unit 3 Sh1.rtdl1wn:
CU2.2 is not applicable.
IPEC Basis Reference(s):
- i. 2-POP-4.2 Operation Below 20% PRZR Level with Fuel in the Reactor
- 2. 3-POP-4.2 Operation Below 20% PRZR Level with Fuel in the Reactor
IPEC NON-QUALITY EMERGENCY RELATED IP-EP-AD13 Revision 22 PLAN PROCEDURE ADMINISTRATIVE '--------l----,-----4---------.-------i PROCEDURES REFERENCE USE Page 80 of 309 Attachment 1 - Emergency Action Level Bases Figure C Unit 2 Component Elevations and Levels
.............. . _ . . . . i'i'
IPEC NON-QUALITY EMERGENCY RELATED IP-EP-AD13 Revision 22 PLAN* PROCEDURE ADMINISTRATIVE t-------+-----,----+------,----1 PROCEDURES REFERENCE USE Page 81 of 309 Attachment 1 - Emergency Action Level Bases Category: C - Cold Shutdown / Refueling System Malfunction Subcategory: 2 - Reactor Vessel Level Initiating Condition: RCS Leakage EAL:
CU2.3 Unusual Event Reactor vessel level cannot be monitored with unexplained rise in any Table C-1 sump/
tank level or visual observation of RCS leakage Table C-1 Sumps/ Tanks
- Containment sumps
- CCW surge tank
- RCDT Mode Applicability:
6 - Refueling NEI 99-01 Basis:
This EAL is a precursor of more serious conditions and considered to be a potential degradation of the level of safety of the plant.
Refueling evolutions that decrease RPV water level below the RPV flange are carefully planned and procedurally controlled. An unplanned event that results in water level decreasing below the RPV flange, or below the planned RPV water level for the given evolution (if the planned RPV water level is already below the RPV flange), warrants declaration of an Unusual Event due to the reduced RCS inventory that is available to keep the core covered.
The allowance of 15 minutes was chosen because it is reasonable to assume that level can be restored within this time frame using one or more of the redundant means of refill that should be available. If level cannot be restored in this time frame then it may indicate a more serious condition exists.
IPEC NON-QUAL ITY EMERGE NCY RELATED IP-EP-AD13 Revision 22 PLAN PROCEDURE ADMINIST RATIVE r----------r---+-----r-----1 PROCEDU RES REFERENCE USE Page 82 of 309 Attachmen t 1 - Emergenc y Action Level Bases
- *
- Continued loss of RCS inventory will result in escalation to the Alert emergenc y classificat ion level via either CA2.1 or CA3.1.
This EAL addresses conditions in the refueling mode when normal means of core temperatu re indication and RPV level indication may not be available. Redundan t means of RPV level indication will normally be installed (including the ability to monitor level visually) to assure that the ability to monitor level will not be interrupted. However, if all level indication were to be lost during a loss of RCS inventory event, the operators would need to determine that RPV invenbry loss was occurring by observing sump and tank level changes. Sump and tank level increases must be evaluated again!!t other potentinl sources of leakage such as cooling water sources inside the containme nt to ensure they are indicative of RCS leakage.
Escalation to the Alert emergenc y ciassification ievel would be via either CA2.1 or CA3.1.
IPEC Basis:
Unit 2 RCS elevations are U:ustrated in Figure C-3 (ref. 1 ). Unit 2 RCS level can be monitored by one or more of the following (ref. 1 ):
a Barton level system
- Tygon level system
- Mansell Level Monitoring System (MLMS)
- Intermediate range RCS level indicator (LT-7610)
IPEC NON-QU ALITY EMERG ENCY RELATED IP-EP-AD13 - Revision 22 PLAN PROCEDURE ADMIN ISTRAT IVE i - - - - - - - i - - - - - - . - - - - - - - r - - - - - - 1 PROCEDURES REFERENCE USE Page 83 of 309 Attachm ent 1 - Emergency Action Level Bases Unit 3 RCS level can be monitored by one or more of the following (ref. 2):
- 32 & 34 Intermediate Leg Level Indicators (ILLI)
- Hand Held Ultrasonic Transducers
- Mansell Level Monitoring System
- Intermediate range RCS level indicator (LT-7610)
G RVLIS In this EAL, all water level indication is unavailable, and the Reacto r Vessel invento ry loss must be detected by sump or tank level changes (Table C-1) or visual observation of RCS leakage. Plant design and procedures provide the capability to detect and assess primary system leakage (ref. :3 -* 9).
Post Unit 2 and Unit 3 Sht1tdcwn:
CU2.3 is not applicabl1:a IPEC Basis Reference-(s):
- 1. 2-POP-4.2 Operation Below 20% PRZR Leve! with Fuel in the Reactor
- 2. 3-POP-4.2 Operation Below 20% PRZR Level with Fuei in the Reactor
- 3. Unit 2 FSAR 4.2. 7
- 4. Unit 2 FSAR 6.2.2.1.2
- 5. Unit 2 FSAR 9.2.2.4.3
- 6. Unit 3 FSAR 4.2.10
- 7. Unit 3 FSAR 6.7.2.3
- 8. 2-AOP-LEAK-1 Sudden Increase in Reactor Coolant System Leakage
- 9. 3-AOP-LEAK-1 Sudden Increase in Reactor Coolant System Leakage
IPEC NON-QUALITY EMERGENCY RELATED IP-EP-AD13 Revision 22 PLAN PROCEDURE ADMINISTRATIVE 1..---.--------l---------l-------,-~
PROCEDURES REFERENCE USE Page 84 of 309 Attachment 1 - Emergency Action Level Bases Figure C Unit 2 Component Elevations and Levels ijI- ,j mm ft u~u f
~
~~
IPEC NON-QUALITY EMERGENCY RELATED IP-EP-AD13 Revision 22 PLAN PROCEDURE ADMINISTRATIVE i--------1----.---------+-----.----,
PROCEDURES REFERENCE USE Page 85 of 309 Attachment 1 - Emergency Action Level Bas~s Category: C - Cold Shutdown I R~fueling System Malfunction Subcategory: 2-RPV Level Initiating Condition: Loss of reactor vessel inventory EAL:
CA2.1 Alert Reactor vessel level < bottom of the RCS hot leg (60' 4.8" elev. RVLIS 62%)
OR Reactor vessel level cannot be monitored for.?: 15 min. (Note 3) with unexplained rise in any Table C-1 sump/ tank level or visual observation of RCS leakage Note 3: The Emergency Directo, should not wait until the applicable time has elapsed, but should declare the event as soon as it is determined that the condition will likely excead the applicable time.
1:r===~=="_=~----*- ~ = ~ ~ p s /Tanks=~=~~==.l
~~/
i "' Containment sumps U
surge tank CDT
=-~===== ======-*= ======='
Mode Applicability:
5 - Cold Shutdown, 6 - Refueling.
NEI 99-01 Basis:
This EAL serves as precursors to a loss of ability to adequately cool the fuel. The magnitude of this loss of water indicates that makeup systems have not been effective and may not be capable of preventing further RPV level decrease and potential core uncovery. This condition will result in a minimum emergency classification level of an Alert.
The Bottom ID of the RCS loop was chosen because at this level remote RCS level indication may be lost and loss of suction to decay heat removal systems has occurred. The Bottom ID of the RCS loop is the level equal to the bottom of the RPV loop penetration (not the low point of the loop).]
IPEC NON-QUALITY EMERGENCY RELATED IP-EP-AD13 Revision 22 PLAN PROCEDURE ADMINISTR ATIVE------- -~--+---~-~
PROCEDURES REFERENCE USE Page 86 of 309 Attachment 1 - Emergency Action Level Bases The inability to restore and maintain level after reaching this set-point would be indicative of a failure of the RCS barrier.
If RPV level continues to lower then escalation to Site Area Emergency will be via CS2.1.
In the cold shutdown mode, normal RPV level and RPV level instrumentation systems will usually be available. In the refueling mode, normal means of RPV level indication may not be available. Redundant means of RPV level indication will usually be installed (including the ability to monitor level visually) to assure that the ability to monitor level will not be interrupted.
However, if all level indication were to be lost during a loss of RCS inventory event, the operators would need to determins that RPV inventory loss was occurring by observing sump and tank level changes. Sump and tank level incieases must be evaluated against other potantial sources of !ea.kage such as cooling water sources inside the containment to ensure they are indicative of RCS leakage.
The 15-minute duration for the loss of level indication was chosen because it is half of the CS2.3 Site Area Emergency EAL duration. Significant fuel damage is not expected to occur until the core has been uncovered for greater tlian *1 hour per the analysis referenced in the CG1 basis. Therefore this EAL meets the definition for an Alert.
IPEC Basis:
Unit 2 RCS elevations are illustrated in Figure C-3 (ref. 1 ). Unit 2 RCS level can be monitored by one or more of the following (ref. 1):
- Barton level system
- Tygon level system
- Mansell Level Monitoring System (MLMS)
- Intermediate range RCS level indicator (LT-7610)
IPEC NON-QUALITY EMERGENCY RELATED IP-EP-AD13 Revision 22 PLAN PROCEDURE ADMINISTRATIVE 1----- ------- ---+-- ------1 PROCEDURES REFERENCE USE Page 87 of 309 Attachment 1 - Emergency Action Level Bases Unit 3 RCS level can be monitored by one or more of the following (ref. 2):
- 32 & 34 Intermediate Leg Level Indicators (ILLI) e Hand Held Ultrasonic Transducers
- Mansell Level Monitoring System
- Intermediate range RCS level indicator (LT-7610)
G RVLIS Unit 2 and Unit 3 RVLIS Full Range indication of 62% corresponds to the bottom of the RCS hot leg penetration which is at 60.4' {60' 4.8") el. (ref. 3). If Reactor Vessel level cannot be monitored, the Reactor Vessel ir.ventory loss must be detected by sump or tank level changes (Table C-1) or visual nbservstion of RCS leakage. Plant design and procedures provide the capability to detect and assess primary system leakage (ref. 4 - 10).
Post Unit 2 and Un!t 3 Shutdown:
CA2.1 is not applicable.
IPEC Basis Reference(s):
- 1. 2-POP-4.2 Operation Below 20% PRZR Level with Fuel in the Reactor
- 2. 3-POP-4.2 Operation Below 20% PRZR Level with Fuel in the Reactor
- 3. RCS-15 RVLIS Full Range Level Indication Map
- 4. Unit 2 FSAR 4.2. 7
- 5. Unit 2 FSAR 6.2.2.1.2
- 6. Unit 2 FSAR 9.2.2.4.3
- 7. Unit 3 FSAR 4.2.10
- 8. Unit 3 FSAR 6.7.2.3
- 9. 2-AOP-LEAK-1 Sudden Increase in Reactor Coolant System Leakage 10.3-AOP-LEAK-1 Sudden Increase in Reactor Coolant System Leakage
IPEC NON-QUALITY EMERGENCY RELATED IP-EP-AD13 Revision 22 PLAN PROCEDURE ADMINISTRATIV E 1---------+------1--------.---1 PROCEDURES REFERENCE USE Page 88 of 309 Attachment 1 - Emergency Action Level Bases Figure C Unit 2 Component Elevations and Levels
-~-
IPEC NON-QUALITY EMERGENCY RELATED IP-EP-AD13 Revision 22 PLAN PROCEDURE ADMINISTRATIVE i--------i-----,----+-----.------1 PROCEDURES REFERENCE USE Page 89 of 309 Attachment 1 - Emergency Action Level Bases Category: C - Cold Shutdown / Refueling System Malfunction Subcategory: 2-RPV Level Initiating Condition: Loss of reactor vessel inventory affecting core decay heat removal capability EAL:
CS2.1 Site Area Emergency With Containment Closure (Note 5) not established, reactor vessel level< 6" below the bottom of the RCS hot leg (59' 10.8" elev.- RVLIS 60.8%)
Note 5: The site specific procedurally defined actions t:3ken to secure containment and its associated structures, systems, and components as a functional barrier to fist:iion product release under existing plant conditions. As applied to IPEC, Containment Closure exists when the requirements of Section 3.9.3 of Technical Specifications are met (all un-isolated flow peths are promptly closed and at least one door in each air lock is closed following an evacuation of containment).
Mode Applicability:
5 ;. Cold Shutdown, 6_ - Refueling NEI 99-01 Basis:
Under the conditions specified by this EAL, continued decrease in RPV level is indicative of a ioss of inventory control. Inventory loss may be due to an RCS breach, pressure boundary leakage, or continued boiling in the RPV. Thus, declaration of a Site Area Emergency is warranted.
Escalation to a General Emergency is via CG2.1 or AG1 .1/AG1 .3.
IPEC Basis:
Unit 2 RCS elevations are illustrated in Figure C-3 (ref. 1). Unit 2 RCS level can be monitored by one or more of the following (ref. 1):
- Barton level system
- Tygon level system
- Mansell Level Monitoring System (MLMS)
- Intermediate range RCS level indicator (LT-7610)
IPEC NON-QUALITY EMERGENCY RELATED IP-EP-AD13 Revision 22 PLAN PROCEDURE ADMINISTRATIVE 1-------+---~---1------,---~
PROCEDURES REFERENCE USE Page 90 of 309 Attachment 1 - Emergency Action Level Bases s CCR Foxboro (RCS DRAIN DOWN NARROW RANGE) s RVLIS Unit 3 RCS level can be monitored by one or more of the following (ref. 2):
- 32 & 34 Intermediate Leg Level Indicators (ILLI)
- Hand Held Ultrasonic Transducers
" Mansell Level Monitoring System 111 Intermediate range RCS level indicator (LT-7610) s RVLIS Unit 2 and Unit 3 RVUS Ful! Range !ndlcatlon of 60.8% corresponds to six inches below the bottom of the RCS hot leg pe::atration which is at 58.9' (59' *10.8") el. (ref. 3). If Reactor Vessel level cannot be monltored, the Reactor Vessel inventory !ass must be detected by sump or tank level changes (Tabie C--,1 ). Piant design and procedu!*es provide the capability to detect and assess primary system leakage (ref. 4 - 10).
Post Unit 2 and Unit 3 Shutdown:
CS2.1 is not applicable.
IPEC Basis Reference(s):
- 1. 2-POP-4.2 Operation Below 20% PRZR Level with Fuel in the Reactor
- 2. 3-POP-4.2 Operation Below 20% PRZR Level with Fuel in the Reactor
- 3. RCS-15 RVLIS Full Range Level Indication Map
- 4. Unit 2 FSAR 4.2. 7
- 5. Unit 2 FSAR 6.2.2.1.2
- 6. Unit 2 FSAR 9.2.2.4.3
- 7. Unit 3 FSAR 4.2.10
- 8. Unit 3 FSAR 6.7.2.3
- 9. 2-AOP-LEAK-1 Sudden Increase in Reactor Coolant System Leakage 10.3-AOP-LEAK-1 Sudden Increase in Reactor Coolant System Leakage
IPEC NON-QUALITY EMERGENCY RELATED IP-EP-AD13 Revision 22 PLAN PROCEDURE ADMINISTRATIV E 1-----------1-------1----~---1 PROCEDURES REFERENCE USE Page 91 of 309 Attachment 1 - Emergency Action Level Bases Figure C Unit 2 Component Elevations and Levels
~
U\'iil£l!L
~
23~ _J
~4T~ I
"""~
IPEC NON-QUALITY EMERGENCY RELATED IP-EP-AD13 Revision 22 PLAN PROCEDURE ADMINISTRATIVE 1 - - - - - - - - - ~ - - - + - - - - - - . - - - - - 1 PROCEDURES REFERENCE USE Page 92 of 309 Attachment 1 - Emergency Action Level Bases Category: C - Cold Shutdown / Refueling System Malfunction Subcategory: 2- RPV Level Initiating Condition: Loss of reactor vessel inventory affecting core decay heat removal capability EAL:
CS2.2 Site Area Emergency With Containment Closure (Note 5) established, reactor vessel level < top of active fuel (57' 9.6" elev.- RVLIS 56%)
Note 5: The site specific procedurally defined actions taken to secure containment and its associated structures, systems, and components as a functional barrier to fission product release under existing plant conditions. As applied to IPEC, Containment Closure exists wtien the requirements of Section 3.9.3 of Technical Specifications are met (all un-isolated fiow paths are promptly dosed and at least one door in each air lock is closed following an evacuation of containment).
Mode Applicability:
5 - Cold Shutdown, 6 - Refueling NEI 99-01 Basis:
Under the conditions tpecified by this EAL, continued decrease in RPV level is indicative of a loss of inventory control. Inventory loss_may be due to an RCS breach, pressure boundary leakage, or continued boiling in the RPV. Thus, declaration of a Site Area Emergency is warranted.
Escalation to a General Emergency is via CG2.1 or AG1 .1 /AG1 .3.
IPEC Basis:
Unit 2 RCS elevations are illustrated in Figure C-3 (ref. 1). Unit 2 RCS level can be monitored by one or more of the following (ref. 1):
- Barton level system
- Tygon level system
., Mansell Level Monitoring System (MLMS) o Intermediate range RCS level indicator (LT-7610)
IPEC NON-QUALITY EMERGENCY RELATED IP-EP-AD13 Revision 22 PLAN PROCEDURE ADMINISTRATIVE i---------+----r----1------r----1 PROCEDURES REFERENCE USE Page 93 of 309 Attachment 1 - Emergency Action Level Bases
- 32 & 34 Intermediate Leg Level Indicators (ILLI)
- Hand Held Ultrasonic Transducers
- Mansell Level Monitoring System
- Intermediate range RCS level indicator (LT-7610)
[57' 9.6"] elev.) (ref. 3). If Reactor Vessel level cannot be monitored, the Reactor Vessel inventory loss must be detected by sump or tank level changes (Table C-1 ). Plant design and procedures provide the capability to detect and assess primary system leakage (ref. 4 - 10).
Post Unit 2 and Unit 3 Shutdown:
CS2.2 is not applicable.
IPEC Basis Reference(s):
- 1. 2-POP-4.2 Operation Below 20% PRZR Level with Fuel in the Reactor L
- 2. 3-POP-4.2 Operation Below 20% PRZR Level with Fuel in the Reactor
- 3. RCS-15 RVLIS Full Range Level Indication Map
- 4. Unit 2 FSAR 4.2. 7
- 5. Unit 2 FSAR 6.2.2.1.2
- 6. Unit 2 FSAR 9.2.2.4.3
- 7. Unit 3 FSAR 4.2.10
- 8. Unit 3 FSAR 6.7.2.3
- 9. 2-AOP-LEAK-1 Sudden Increase in Reactor Coolant System Leakage
- 10. 3-AOP-LEAK-1 Sudden Increase in Reactor Coolant System Leakage
IPEC NON-QUALITY EMERGENCY RELATED IP-EP-AD13 Revision 22 PLAN PROCEDURE ADMINISTRATIVE 1------------1----,-------
1------,--j PROCEDURES REFERENCE USE Page 94 of 309 Attachment 1 - Emergency Action Level Bases Figure C Unit 2 Component Elevations and Levels ll'llZDi !I UN\illm. 1 MEJll$ ~lst~d il
~ fil\G~~ l '.f~llrrl!l.-,edITTefft ..
~ -~-- ---
1,1,,, i
,_....,.,,,;,,.~;..,,-
-"<"~, liW
_-- -- .-~......,-~--'
IPEC NON-QUA LITY EMERGENCY RELATED IP-EP-AD13 Revision 22 PLAN PROCEDURE ADMINISTRATIVE i----------1r----,----1----.-----
---1 PROCEDURES REFERENCE USE Page 95 of 309 Attachment 1 - Emergency Action Level Bases Category: C - Cold Shutdown / Refueling System Malfunction Subcategory: 2-RPV Level Initiating Condition: Loss of reactor vessel inventory affecting core decay heat removal capability EAL:
CS2.3 Site Area Emergency Reactor vessel level cannot be monitored for~ 30 min. (Note 3) with a loss of inventory as indicated by any of the following:
- Containment High Range Radiation Monitor reading upscale
- Unexplained rise in any Table C-1 sump/ tank level of visual observation of RCS leakage
- Erratic Source Range Monitor indication Note 3: The Emergency Director should not wait until the applicable time has elapsed, but should declare the event as soon as it is determined that the condition will likely exceed the applicable time.
Table C-1 Sumps / Tanks
- Containment sumps
- CCW surge tank
- RCDT Mode Applicability:
5 - Cold Shutdown, 6 - Refueling
IPEC NON-QUALITY EMERGENCY RELATED IP-EP-AD13 Revision 22 PLAN PROCEDURE ADMINISTRATIVE t - - - - - - - + - - - - - , - - - - - + - - - - - , - - - - - i PROCEDURES REFERENCE USE Page 96 of 309 Attachment 1 - Emergency Action Level Bases NEI 99-01 Basis:
Under the conditions specified by this EAL, continued decrease in RPV level is indicative of a loss of inventory control. Inventory loss may be due to an RCS breach, pressure boundary leakage, or continued boiling in the RPV. Thus, declaration of a Site Area Emergency is warranted.
Escalation to a General Emergency is via CG2.1 or AG1 .1 /AG1 .3.
In the cold shutdown mode, normal RPV level and RPV level instrumentation systems will usually be available. In the refueling mode, normal means of RPV level indication may not be available. Redundant means of RPV level indication will usually be installed (including the ability to monitor level visually) to assure that the ability to monitor level will not be interrupted.
However, if all level indication were to be lost during a loss of RCS inventory event, the operators would need to determine that RPV inventory loss was occurring by observing sump and tank level changes. Sump and tank level increases must be evaluated against other potential sources of leakage such as cooling water sources inside the containment to ensure they are indicative of RCS leakage.
The 30-minute duration allows sufficient time for actions to be performed to recover inventory control equipment.
As water level in the RPV lowers, the dose rate above the core will increase. The dose rate
<' due to this core shine should result in containment radiation monitor indication and possible alarm.
Post-TM! studies indicated that the installed nuclear instrumentation will operate erratically when the core is uncovered and that this should be used as a tool for making such determinations.
IPEC NON-QUALITY EMERGENCY RELATED IP-EP-AD13 Revision 22 PLAN PROCEDURE ADMINISTRATIV E 1--------1----,------+--------r----1 PROCEDURES REFERENCE USE Page 97 of 309 Attachment 1 - Emergency Action Level Bases IPEC Basis:
Unit 2 RCS elevations are illustrated in Figure C-3 (ref. 1). Unit 2 RCS level can be monitored by one or more of the following (ref. 1):
- Barton level system
- Tygon level system
- Mansell Level Monitoring System (MLMS)
- Intermediate range RCS level indicator {LT-7610)
- 32 & 34 Intermediate Leg Level Indicators (iLLI)
- Hand Held Ultrasonic Transducers
- Mansell Level Monitoring System
- Intermediate range RCS level indicator (LT-7610}
- RVLIS In this EAL, all water level indication is unavailable, and the Reactor Vessel inventory loss must be detected by the following:
- Containment High Range Radiation Monitor reading upscale (meaning the monitor is reading above it's normal on scale bugged level)
- Sump or tank level changes (Table C-1) or visual observation of RCS leakage : Plant design and procedures provide the capability to detect and assess primary system leakage (ref. 3 - 9).
IPEC NON-QUALITY EMERGENCY RELATED IP-EP-AD13 Revision 22 PLAN PROCEDURE ADMINISTRATIVE t--------r----,----r----r-----t PROCEDURES REFERENCE USE Page
- 98 of 309 Attachment 1 - Emergency Action Level Bases
- Erratic Source Range Monitor indication: Post-TMI studies indicate that the installed nuclear instrumentation will operate erratically when the core is uncovered and source range monitors can be used as a tool for making such determinations. Figure C-4 shows the response of the source range monitor during the first few hours of the TMl-2 accident. The instrument reported an increasing signal about 30 minutes into the accident. At this time, the reactor coolant pumps were running and the core was adequately cooled as indicated by the core outlet thermocouples. Hence, the increasing signal was the result of an increasing two-phase void fraction in the reactor core and vessel down-comer and the reduced shielding that the two-phase mixture provides to the source range monitor (ref. 10, 1 *1 ). The two source range monitor channels indicate the source range neutron flux and startup rate and provide high flux level reactor trip and aiarm signals to tr.e reactor control and protection system. They are used at shutdown to provide audible alarms in the mactor containment and central control room of any inadvertent increase in reactivity. An audible count rate signal Is used during initial phases of startup and is audible in both the reactor containment and central control room. Mounted on the front panel of the source range channel is a neutron flux level indicator calibrated in terms of count rate level (1 to 106 cps}. Mounted on the control board is a neutron count rate level indicator (1 to 106 cps). Isolated neutron flux signals are available for recording by the nuclear instrumentation system recorder and startup rate computation. (ref 12, 13)
Post Unit 2 and Unit 3 Shutdown:
CS2.3 is not applicable.
IPEC NON-QUALITY EMERGENCY RELATED IP-EP-AD13 Revision 22 PLAN PROCEDURE ADMINISTRATIVE 1---------- ~-----..---- -i PROCEDURES REFERENCE USE Page 99 of 309
- Attachment 1 - Emergency Action Level Bases IPEC Basis Reference(s):
1 . 2-POP-4.2 Operation Below 20% PRZR Level with Fuel in the Reactor
- 2. 3-POP-4.2 Operation Below 20% PRZR Level with Fuel in the Reactor
- 3. Unit 2 FSAR 4.2. 7
- 4. Unit 2 FSAR 6.2.2.1.2
- 5. Unit 2 FSAR 9.2.2.4.3
- 6. Unit 3 FSAR 4.2.10
- 7. Unit 3 FSAR 6.7.2.3
- 8. 2-AOP-LEAK-1 Sudden Increase in Reactor Coolant System Leakage
- 9. 3-AOP-LEAK-1 Sudden Increase in Reactor Coolant System Leakage
- 10. Severe Accident Management Guidance Technical Basis Report, Volume 1: Candidate High-Level Actions and Their Effects, pgs. 2-18, 2-19
- 11. Nuclear Safety Analysis Center (NSAC), 1980, "Analysis of Three Mile Island - Unit 2 Accident," NSAC-1 12.Unit 2 FSAR 7.4.2.1.3
- 13. Unit 3 FSAR 7.4.2
IPEC NON-QUAL ITY EMERGENCY RELATED IP-EP-AD13 Revision 22 PLAN PROCEDURE ADMINISTRATIVE L-----------1---~---1-------.----1 PROCEDURES REFERENCE USE Page 100 of 309 Attachment 1 - Emergency Action Level Bases Figure C Unit 2 Component Elevations and Levels Ii £flll lvlf~j,ID[{(~ ~ w~
Ux,!EllL
!! ]
IPEC NON-QUA LITY EMERGENCY RELATED IP-EP-AD13 Revision 22 PLAN PROCEDURE AOMINISTRATIVE 1 - - - - - - - - - + - - - , - - . - - - + - - - - - - - . - ~
PROCEDURES REFERENCE USE Page 101 of 309 Attachment 1 - Emergency Action Level Bases Figure C Response of the TMl-2 Source Range Measurement During the First Six Hours of the Accident (ref. 10, 11)
,..-----r, ~ ~-
1" a)
L--- ----- '---- ----- '---- ----- .s a.
IC ._ r*:c 0 - D::i
IPEC NoN-QUALllY EMERG ENCY RELATED IP-EP-AD13 Revision 22 PLAN PROCEDURE ADMINIS TRATIVE t - - - - - - - - - - ~ - - + - - - - - . - - - - l PROCED URES REFERENCE USE Page 102 of 309 Attachm ent 1 - Emergency Action Level Bases Category: C - Cold Shutdown / Refueling System Malfunction Subcategory: 2 - RPV Level Initiating Condition: Loss of reactor vessel inventory affecting fuel clad integrity with Containment challenged EAL:
CG2.1 General Emergency Reactor vessel level< top of active fuel (57' 9.6"- elev.- RVLIS 56%) for~ 30 min. (Note 3)
AND Any Containment Challenge indication, Table C-5 Note 3: The Emergency Director should r1ot i.vait until thfl applicable time has elapsed, but should declare the event as soon as it is determined that the condil.ion will :ike!y exceed the ap.11icable tirne.
r I .
Ta~;e c .. 5 Cm1~ainm~,~t Chai!er.ge lndicaUons
- .. M* - ** *--* , * - - - * -
- Containment Closure (l'Jcte 5) not established
- Contai!1ment hydrogen cuncentrai:i;)fl :::_ 4%
- Unplanned rise in containment pressure Note 5: The site specific procedura lly defined actions taken to sect.re containme :.t and its associated structures, systems, and componen ts as a functional barrier to fission produ::: release under existing plant conditions. As applied to IPEC, Containme nt Closure exists when the requirements of Section 3.9.3 of Technical Specificat ions are met (all un-isolated flow paths are promptly closed and at least one door in each air lock is closed following an evacuation of containme nt).
Mode Applicability:
_)
5 - Cold Shutdown, 6 - Refueling NEI 99-01 Basis:
This EAL represents the inability to restore and maintain RPV level to above the top of active fuel with containment challenged. Fuel damage is probable if RPV level cannot be restored, as available decay heat will cause boiling, further reducing the RPV level. With the containm ent breached or challenged then the potential for unmonitored fission product release to the environment is high. This represents a direct path for radioactive inventory to be released to the environment. This is consistent with the definition of a GE. The GE is declared on the occurrence of the loss or imminent loss of function of all three barriers.
IPEC NON-QUALITY EMERGENCY RELATED IP-EP-AD13 Revision 22 PLAN PROCEDURE ADMINISTRATIVE 1-------+----.------+-----,------1 PROCEDURES REFERENCE USE Page 103 of 309 Attachment 1 - Emergency Action Level Bases These EALs are based on 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.
A number of variables can have a significant impact on heat removal capability challenging the fuel clad barrier. Examples include mid-loop, reduced level/flange level, head in place, cavity flooded, RCS venting strategy, decay heat removal system design, vortexing pre-disposition, steam generator U-tube draining.
Analysis indicates that core damage may occur within an hour following continued core uncovery therefore, 30 minutes was conser,atively chosen.
If containment closure is rn-establishsd prior to exceeding the 30 minute core uncovery time limit then escalation to GE would not occur.
In the early stages of a core uncovery event, it is unlikely that hydrogen bul:dup due to a core uncovery could result in an explosive mixture of dissolved gasses in containment. However, containment monitoring and/or sampling should be performed to verify this assumption and a General Emergency declared if it is determined that an explosive mixture exists.
IPEC Basis:
Unit 2 RCS elevations are illustrated in Figure C-3 (ref. 1). Unit 2 RCS level can be monitored by one or more of the following (ref. 1):
- Barton level system
- Tygon level system
- Mansell Level Monitoring System (MLMS)
- Intermediate range RCS level indicator (LT-7610)
IPEC NON-QUAL ITY EMERGENCY RELATED IP-EP-AD13 Revision 22 PLAN PROCEDURE ADMINISTRATIVE t-----------i------.-----+--------,----;
PROCEDURES REFERENCE USE Page 104 of 309 Attachment 1 -- Emergency Action Level Bases
- 32 & 34 Intermediate Leg Level Indicators (ILLI)
- Hand Held Ultrasonic Transducers
- Mansell Level Monitoring System
- Intermediate range RCS level indicator (L T-7610) o RVLIS RVLIS Full Range indication of 56% corresponds fo top of active fuel (57.8' [57' 9.6"] elev.)
(ref. 3).
Three indications are associated with a challange to Containment:
~ Containment closure is the action taken to secure containment and Its associated structures, systems, and components as a functional barrier to fission product release under existing p!ant conditions, As applied to IPEC, Containment Closure is established when Containment Integrity is established per Section 3.9.3 of Technical Specifications.
During movement of recently irradiated fuel assemblies within containment, a release of fission product radioactivity within containment will be restricted from escaping to the environment when the LCO requirements are met. In MODES 1, 2, 3, and 4, this is accomplished by maintaining containment OPERABLE as described in LCO 3.6.1, "Containment." In Cold Shutdown and Refuel modes, however, the potential for containment pressurization as a result of an accident is not likely; therefore, requireme nts to isolate the containment from the outside atmosphere can be less stringent. The LCO requirements are referred to as "containment closure" rather than "containment OPERABILITY." (ref. 4)
- 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 mixture of dissolved gases in containment.
IPEC NON-QUA LITY EMERGENCY RELATED IP-EP-AD13 Revision 22 PLAN PROCEDURE ADMINISTRATIVE - - - - - - r - - - - - - r - - - - - - , - - - - - - - i PROCEDURES REFERENCE USE Page 105 of 309 Attachment 1 - Emergency Action Level Bases However, containment monitoring and/or sampling should be performed to verify this assumption and a General Emergency declared if it is determined that an explosive mixture exists. A combustible mixture can be formed when hydrogen gas concentration in the containment atmosphere is greater than 4% by volume (ref. 5, 6). All hydrogen measurements are referenced to concentrations in dry air even though the actual containment environment may contain significant steam concentrations. Unit 2 Containm ent hydrogen analyzers AIT-5109-1 and AIT-5109-1 display hydrogen concentration and alarm at4% hydrogen concentration (ref. 9). For Unit 3, The Containment Hydrogen Concentration Measurement System is used to monitor the post-accident hydrogen concentration. Two redundant sample systems are installed.
One unit samples the plenum chambers of containment recirculation fans 32 and 35.
The second unit samples the plenum chambers of recirculation fans 31, 33 and 34. (ref.
10)
- An unplanned pressurization that can breach the containment barrier signifies a challenge to the containment pre$sure retaining capability which is depende nt on the status of the containment. If containmE3nt integrity is established for full power operation, a breach could occur if the design containment pressure is exceeded (47 psig). For this 0
condition, a small unplanned pressure rise above atmospheric pressure does not challenge containment. If in refueling operations, however, a breach could occur if the unplanned pressure rise exceeded the capability of a temporary containment seal. This would occur at a much lower pressure than the containment design pressure. Use of the verb "... can breach ... : instead of "breaches" provides the Emergency Director with the latitude to assess the magnitude and rate of the containment pressure rise with respect to the barrier status (for the existing operating mode) and determine that the containment challenge exists due to elevated pressure either before or at the time that the actual breach of the barrier occurs. (ref. 7, 8)
Post Unit 2 and Unit 3 Shutdown:
CG2.1 is not applicable.
IPEC NON-QUA LITY EMERGENCY RELATED IP-EP-AD13 Revision 22 PLAN PROCEDURE ADMINISTRATIVE 1--- ---- --~- - ---~ ---1 PROCEDURES REFERENCE USE Page 106 of 309 Attachment 1 - Emergency Action Level Bases IPEC Basis Reference(s):
- 1. 2-POP-4.2 Operation Below 20% PRZR Level with Fuel in the Reactor
- 2. 3-POP-4.2 Operation Below 20% PRZR Level with Fuel in the Reactor
- 3. RCS-15 RVLIS Full Range Level Indication Map
- 4. Technical Specifications 83.9.3
- 5. 2-FR-C.1 RESPONSE TO INADEQUATE CORE COOLING
- 6. 3-FR-C.1 RESPONSE TO INADEQUATE CORE COOLING
- 7. 2-F-0.5 CONTAINMENT
- 8. 3-F-0.5 CONTAINMENT
- 9. 2-ARP-043 Accident Assessment Panel 1 10.SOP- SS-4 Containment Hydrogen Measurement System
IPEC NON-QUA LITY EMERGENCY RELATED IP-EP-AD13 Revision 22 PLAN PROCEDURE ADMINISTRATIVE 1 - - - - - - - - + - - - - - - + - - - - . - - - 1 PROCEDURES REFERENCE USE Page 107 of 309 Attachment 1 - Emergency Action Level Bases Figure C Unit 2 Component Elevations and Levels
~~
li!fl'lli]L
~'Fi/t~lfi ff,i :wf(;'~/$~
t-:r~,iClrfmli~S ~ ~*z (/ £?':G 4*-------4 ~---~--+ ----~:,,j1 ;....,..,,,_ ., 't?.r6 /! JI~~ ij
_,.,,,:_,,_ __,.'--N.-f==,:""><"""..,_ __,;;,....._, _ _~,,-u
.\i ~i~ i; tn:P.'f~ ~ :~,JS~
IPEC NON-QU ALITY EMERGENCY RELATED IP-EP-AD13 Revision 22 PLAN PROCEDURE ADMINISTRATIVE r----------t----,----+------.-----1 PROCEDURES REFERENCE USE Page 108 of 309 Attachment 1 - Emergency Action Level Bases Category: C - Cold Shutdown / Refueling System Malfunction Subcat egory: 2-RPV Level Initiating Condition: Loss of RPV inventory affecting fuel clad integrity with Containment challenged EAL:
CG2.2 General Emerg ency Reactor vessel level cannot be monitored for~ 30 min. (Note 3)with core uncove ry indicated by ANY of the following:
a Containment High Range Radiation Monitor reading upscale
- Erratic Source Range. Moriitor indication ANO
-Any Containment Chailenge ind:*;atlon, Table C-5 Note 3: The Emergen cy Director sh0ul1j no'. w.-::t u;. 1.ii the 3pplicable time has elapsed.
but sf1ould declare the event as soon as it is determined that the condition will like!;, e~ceed the appiicab!e time.
Table C-1 Sumps / Tanks
IPEC NON-QUA LITY EMERGENCY RELATED IP-EP-AD13 Revision 22 PLAN PROCEDURE ADMINISTRATIVE r--------t------.----+-----.-----1 PROCEDURES REFERENCE USE Page 109 of 309 Attachment 1 - Emergency Action Level Bases Table C-5 Contain ment Challenge Indications
- Containment Closure (Note 5) not established
- Containment hydrogen concentration.:: 4%
o Unplanned rise in containment pressure Note 5: The site specific procedurally defined actions taken to secure containment and its associated structures, systems, and components as a functional barrier to fission product release under existing plant conditions. As applied to IPEC, Containment Closure exists when the requirements of Section 3.9.3 of Technical Specifications are met (all un-isofated flow paths are promptly closed and at feast one door in each air lock is closed following an evacuation of containment).
Mode Applicability:
5 - Cold Shutdown, 6 - Refueling NEI 99-01 Basis:
This EAL represents the inability to restorn and maintain reactor vessel level to above the top.
of active fuel with containment challenged. Fuei damage is probable if reactor vessel level cannot be restored, as available decsy heat will cause boiiing, further reducing the reactor vessel level. With the containment breached or challenged then the potential for unmonitored fission product release to the environment is high. This represents a direct path for radioactive inventory to be released to the environment. This is consistent with the definition of a General Emergency. The General Emergency is declared on tne occurrence of the loss or imminent loss of function of all three barriers.
A number of variables can have a significant impact on heat removal capability challenging the fuel clad barrier. Examples include: mid-loop, reduced level/flange level, head in place, cavity flooded, RCS venting strategy, decay heat removal system design, vortexing pre-disposition and steam generato r U-tube draining.
Analysis indicates that core damage may occur within an hour following continued core uncovery therefore, 30 minutes was conservatively chosen.
If containment closure is re-established prior to exceeding the 30 minute core uncovery time limit then escalation to General Emergency would not occur.
IPEC NON-QUA LITY EMERG ENCY RELATED Revision 22 PLAN PROCEDURE ADMINISTRATIVE i - - - - - - - - - - . - - - - - - - . - - - - - - i PROCEDURES REFERENCE USE Page 110 of 309 Attachment 1 - Emergency Action Level Bases 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 mixture of dissolved gasses in Containment. However, Containment monitoring and/or sampling should be performed to verify this assumption and a General Emergen cy declared if it is determined that an explosive mixture exists.
Sump and tank level increases must be evaluated against other potential sources of leakage such as cooling water sources inside the containment to ensure they are indicative of RCS leakage.
- in the cold shutdown mode, normal RCS level and reactor vessel level instrumentation systems will usually be available. In the Refueling Mode, normal means of reactor vessel level indication may not be available. Redundant means of reactor vessel level indication will usually be installed (including the ability to monitor level visually) to assure that the ability to monitor level will not be interrupted. However, if ail level indication were to be lost during a loss of RCS inventory event, the operators would need to determine that reactor vessel inventory loss was 1
occurring by observing sump and t::.:ir-:k level changes. Sump and tank level increases must be evaluated against other potential sources of leakage such as cooling water sources inside the containment to ensure they are indicative of RCS leakage.
As water level in the reactor vessel lowers, the dose rate above the core will increase. The dose rate due to this core shine should result in Containment High Range monitor indication and possible alarm.
Post-TMI studies indicated that the installed nuclear instrumentation will operate erratically when the core is uncovered and that this should be used as a tool for making such determinations.
IPEC NON-QUA LITY EMERG ENCY RELATED IP-EP-AD13 Revision 22 PLAN PROCEDURE ADMINISTRATIVE 1----------+-----.-----1-------.----1 PROCEDURES REFERENCE USE Page 111 of 309 Attachment 1 - Emergency Action Level Bases IPEC Basis:
Unit 2 RCS elevations ar~ illustrated in Figure C-3 (ref. 1). Unit 2 RCS level can be monitored by one or more of the following (ref. 1):
- Barton level system
- Tygon level system
- Mansell Level Monitoring System (MLMS)
- Intermediate range RCS level indicator (LT-7610)
- 32 & 34 Intermediate Leg Level Indicators (ILLI)
- Hand Held Ultrasonic Transducers
- Mansell Level Monitoring System
- Intermediate range RCS level indicator (LT-7610)
J
- RVLIS In this EAL, all water level indication is unavailable, and the Reactor Vessel inventory loss must be detected by the following:
- Containment High Range Radiation\ Monitor reading upscale (meaning the monitor is reading above it's normal on scale bugged level)
- Sump or tank level changes (Table C-1 ): Plant design and procedures provide the capability to detect and assess primary system leakage (ref. 3 - 9).
- Erratic Source Range Monitor indication: Post-TMI studies indicate that the installed nuclear instrumentation will operate erratically when the core is uncovered and source
IPEC NON-QU ALITY EMERG ENCY RELATED IP-EP-AD13 Revision 22 PLAN PROCEDURE ADMINISTRATIVE 1-------------,-----+-----.-----1 PROCEDURES REFERENCE USE Page 112 of 309 Attachment 1 - Emergency Action Level Bases range monitors can be used as a tool for making such determinations. Figure C-4 shows the response of the source range monitor during the first few hours of the TMl-2 accident. The instrument reported an increasing signal about 30 minutes into the accident. At this time, the reactor coolant pumps were running and the core was adequately cooled as indicated by the core outlet thermocouples. Hence, the increas ing signal was the result of an increasing two-phase void fraction in the reactor core and vessel down-c omer and the reduced shielding that the two-phase mixture provide s to the source range monitor (ref. 10, 11 ). The two source range monitor channels indicate the source range neutron flux and startup rate and provide high flux level reactor trip and alarm signals to the reactor control and protection system. They are used at shutdown to provide audible alarms in the reactor containment and central control room of any inadvertent increase in reactivity. An audible count rate signal is used during initial phases of startup and is audible in both the reactor containment and central control room. Mounted on the front panel of the source range channel is a neutron flux level indicator calibrated in terms of count rate level (1 to 106 cps). Mounted on the control board is a neutron count rate level indicator ( 1 to 106 cps). Isolated neutron flux signals are available for recording by the nuclear instrumentation system recorde r and startup rate computation. (ref 12, 13)
Three indications are associated with a challenge to Containment:
- Containment closure is the action taken to secure containment and its associated structures, systems, and components as a functional barrier to fission product release under existing plant conditions. As applied to IPEC, Containment Closure exists when the requirements are met per Section 3.9.3 of Technical Specifications. During movement of recently irradiated fuel assemblies within containment, a release of fission product radioactivity within containment will be restricted from escaping to the environment when the LCO requirements are met. In MODES 1, 2, 3, and-4, this is accomplished by maintaining containment OPERABLE as described in LCO 3.6.1, "Containment." In Cold Shutdown and Refuel modes, however, the potential for
IPEC NON-QUAL ITY EMERGENCY RELATED IP-EP-AD13 Revision 22 PLAN PROCEDURE ADMINISTRATIVE r-----:---+----r--~---,-----l PROCEDURES REFERENCE USE Page 113 of 309 Attachment 1 - Emergency Action Level Bases containment pressurization as a result of an accident is not likely; therefore, requirements to isolate the containment from the outside atmosphere can be less string~nt. The LCO requirements are referred to as "containment closure" rather than "containment OPERABILITY." (ref. 14)
- 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 mixture of dissolved gases in containment.
However, containment monitoring and/or sampling should. be performed to verify this assumption and a General Emergency declared if it is determined that an explosive mixture exists. A combustible mixture can be formed when hydrogen gas concentration in the containment atmosphere is greater than 4% by volume (ref. 15, 16). All hydrogen measurements are referenced to concentrations in dry air even though the actual
- containment environment may contain significant steam concentrations.
- An unplanned pressurization that can breach the containment barrier signifies a challenge to the containment pressure retaining capability which is dependent on the status of the containment. If containment integrity is established for full power operation, a breach could occur if the design containment pressure is exceeded (47 psig). For this condition, a small unplanned pressure rise above atmospheric pressure does not challenge containment. If in refueling operations, however, a breach could occur if the unplanned pressure rise exceeded the capability of a temporary containment seal. This would occur at a much lower pressure than the containment design pressure. Use of the verb "... can breach ... : instead of "breaches" provides the Emergency Director with the latitude to assess the magnitude and rate of the containment pressure rise with respect to the barrier status (for the existing operating mode) and determine that the containment challenge exists due to elevated pressure either before or at the time that the actual breach of the barrier occurs. (ref. 17, 18)
Post Unit 2 and Unit 3 Shutdown:
CG2.2 is not applicable.
IPEC NON-QUA LITY EMERG ENCY RELATED IP-EP-A D13 Revision 22 PLAN PROCEDURE ADMINIS TRATIVE 1--------+---r----+----r----1 PROCED URES REFERENCE USE Page 114 of 309 Attachm ent 1 - Emergen cy Action Level Bases IPEC Basis Reference(s):
- 1. 2-POP-4 .2 Operation Below 20% PRZR Level with Fuel in the Reactor
- 2. 3-POP-4 .2 Operation Below 20% PRZR Level with Fuel in the Reactor
- 3. Unit 2 FSAR 4.2. 7
- 4. Unit 2 FSAR 6.2.2.1.2
- 5. Unit 2 FSAR 9.2.2.4.3
- 6. Unit 3 FSAR 4.2.10
- 7. Unit 3 FSAR 6.7.2.3
- 8. 2-AOP-LEAK-1 Sudden Increase in Reactor Coolant System Leakage
- 9. 3-AOP-LEAK-1 Sudden Increase in Reactor Coolant System Leakage 10.Seve re Accident Manage ment Guidance Technical Basis Report, Volume 1: Candida te High-Level Actions ancl Their Effects, pgs. 2-18, 2-19
- 11. Nuclear Safety Analysis C<mter (NSAC), 1980, "Analysis of Three Mile Island - Unit 2 Accident," NSAC-1
- 14. Technica l Specificat!ons 83.9.3 15.2-FR-C.1 RESPON SE TO lNADEQ UATE CORE COOLIN G 16.3-FR-C.1 RESPON SE *ro INADEQUATE CORE COOLIN G 17.2-F-0 .5 CONTAI NMENT 18.3-F-0 .5 CONTAI NMENT
IPEC NON-QUAL ITY EMERGENCY RELATED IP-EP-AD13 Revision 22 PLAN PROCEDURE ADMINISTRATIVE 1--------+--~---1---~---1 PROCEDURES REFERENCE USE Page 115 of 309 Attachment 1 - Emergency Action Level Bases Figure C Unit 2 Component Elevations and Levels
~ e.~~~ !~!
. '~~~isf t~ !:
~; ~r~
ff h 1~~
' i------+
i~
/
---i--i- -------1 ------1 ,
- t.
oo.2:it'IJ I
~
IPEC NON-QUALITY EMERGENCY RELATED IP-EP-AD13 Revision 22 PLAN PROCEDURE ADMINISTRATIVE 1-----------,-----1----.....-----1 PROCEDURES REFERENCE USE Page 116 of 309 Attachment 1 - Emergency Action Level Bases Figure C Response of the TMl-2 Source Range Measurement During the First Six Hours of the Accident (ref. 10, 11) i I
{sapeoap 601) puooes 1ed SlUOO:)
IPEC . NON-QUALITY EMERGENC Y RELATED IP-EP-AD13 Revision 22 PLAN PROCEDURE ADMINISTR ATIVE 1---------1---~------1----~---1 PROCEDUR ES REFERENCE USE Page 117 of 309 Attachment 1 - Emergency Action Level Bases Category: C - Cold Shutdown / Refueling System Malfunction Subcategory: 3 - RCS Temperature Initiating Condition: Unplanned loss of decay heat removal capability with irradiated fuel in the reactor vessel EAL:
CU3.1 Unusual Event Any unplanned event resulting in RCS temperature > 200°F due to loss of decay heat removal capability Mode Applicability:
5 - Cold Shutdown, 6 N Refueling NEI 99-01 Basis:
This EAL is be a precursor of more serious conditior;5 and, as a resu!t, ls considered to be a potential degradatio.n of the level of safety of the plant !n cold shutdown the ability to remove decay heat relies primarily on forced cooling flow. Operation of the systems that provide this forced cooling may be jeopardized due to the unlikely loss of electrical power or RCS inventory. Since the RCS usualiy remains intact in the cold shutdown mode a large inventory l
c*
of water is available to keep the core covered.
Entry into Cold Shutdown conditions may be attained within hours of operating at power. Entry
- into the Refueling mode procedurally may not occur for many hours after the reactor has been shut down. Thus the heat up threat and therefore the threat to damaging the fuel clad may be tower for events that occur in the Refueling mode with irradiated fuel in the RPV (note that the heat up threat could be lower for cold shutdown conditions if the entry into Cold Shutdown was following a refueling). In addition, the operators should be able to monitor RCS temperature and RPV level so that escalation to the alert level via CA2.1 or CA3.1 will occur if required:
During refueling the level in the RPV will normally be maintained above the RPV flange.
Refueling evolutions that decrease water level below the RPV flange are carefully planned and
IPEC NON-QUA LITY EMERG ENCY RELATED IP-EP-AD13 Revision 22 PLAN PROCEDURE .
ADMINISTRATIVE - - - - - - + - - - ~ - - - - - ~ - - - - 1 PROCEDURES REFERENCE USE Page 118 of 309 Attachm ent 1 - Emergency Action Level Bases procedurally controlled. Loss of forced decay heat removal at reduced inventory may result in more rapid increases in RCS temperatures depending on the time since shutdown.
IPEC Basis:
Several instruments are capable of providing indication of RCS temperature with respect to the Technical Specification cold shutdown temperature limit (200°F, ref. 1). These include cold and hot leg RTDs, RHR heat exchang er inlet temperature, reactor vessel metal temperatures and core exit thermocouples (ref. 2, 3). Heat up and Cool down rate limitations are provided in Technical Specifications (ref. 4, 5).
Post Unit 2 and Unit 3 Shutdown:
CU3.1 is not applicable.
IPEC Basis Referem :e(s):
- 1. Technical Specifications TGble 1:l-i
- 2. 2-POP-4.2 Operation Below 20% PRZR Leve! with Fuel in the Reactor
- 3. 3-POP-4.2 Operation Below 20% PRZR Level with Fuel in the Reactor
!J.. Technical Specifk:ations 3.4.3
IPEC NON-QUALITY EMERGENCY RELATED IP-EP-AD13 Revision 22 PLAN PROCEDURE ADMINISTRATIVE 1 - - - - - - - - - + - - - ~ - - - - ~ - - - - 1 PROCEDURES REFERENCE USE Page 119 of 309 Attachment 1 - Emergency Action Level Bases Category: C - Cold Shutdown / Refueling System Malfunction Subcategory: 3 - RCS Temperature Initiating Condition: Loss of decay heat removal capability with irradiated fuel in the reactor vessel EAL:
CU3.2 Unusual Event Loss of all RCS temperature and reactor vessel level indication for~ 15 min. (Note 3)
Note 3: The Emergency Director shoultj not wait until the applicable time has elapsed, but should declare the event as soon as it is determined that the condition will likely exceed the applicable time.
Mode Applicability:
5 - Cold Shutdown, 6 - Refueling NEI 99-01 Basis:
This EAL is be a precursor of more serious conditions and, as a result, is considered to be a potential degradation of the ievel of safety of the plant. In cold shutdown the ability to remove decay heat relies primarily on forced cooling flow. Operation of the systems that provide this forced cooling may be jeopardized due to the unlikely loss of electrical power or RCS inventory. Since the RCS usually remains intact in the cold shutdown mode a large inventory of water is available to keep the core covered.
Entry into Cold Shutdown conditions may be attained within hours of operating at power. Entry into the Refueling mode procedurally may not occur for many hours after the reactor has been shut down. Thus the heat up threat and therefore the threat to damaging the fuel clad may be lower for events that occur in the Refueling mode with irradiated fuel in the RPV (note that the heat up threat could be lower for cold shutdown conditions if the entry into Cold Shutdown was following a refueling). In addition, the operators should be able to monitor RCS temperature and RPV level so that escalation to the alert level via CA2.1 or CA3.1 will occur if required.
During refueling the level in the RPV will normally be maintained above the RPV flange.
Refueling evolutions that decrease water level below the RPV flange are carefully planned and
IPEC NON-QUA LITY EMERG ENCY RELATED IP-EP-A D13 Revision 22 PLAN PROCEDURE ADMINIS TRATIV E 1---------~-------
PROCED URES
- REFERENCE USE Page 120 of 309 Attachm ent 1 - Emergen cy Action Level Bases procedu rally controlled. Loss of forced decay heat removal at reduced inventory may result in more rapid increase s in RCS tempera tures dependin g on the time since shutdow n.
Normal means of core tempera ture indication and RCS level indicatio n may not be available in the refueling mode. Redunda nt means of RPV level indication are therefore procedu rally installed to assure that the ability to monitor level will not be interrupt ed. However , if all level and tempera ture indicatio n were to be lost in either the cold shutdow n of refueling modes, this EAL would result in declarati on of an Unusual Event if both tempera ture and level indicatio n
cannot be restored within 15 minutes from the loss of both means of indication. Escalatio n to Alert would be via CA2.1 based on an inventory loss or CA3.1 based on exceedin g its tempera ture criteria.
IPEC Basis:
Several instrume nts are capable ot providing indication cf RCS tempera ture witi1 respect to the Technica l Specifica tion ccld shutdo\,vn tempera ture !lrnlt (200"F, ref. 1). These include cold and hot leg RTDs, RHR heat exchang er inlet tempen::t'Jrc:, reacto,* vessel metal tempera tures and core exit thermoco uples (ref. 2, 3). Heat up a0d Cool down rate limitation s.are pro\lidsd in Technica l Specifica tions (ref. 4, 5).
Unit 2 The Reactor Vessel flange mating surface is at 69' (ref. 6). RCS elevation s are illustrate d in Figure C-3 (ref. 6). RCS level can be monitored by one or more of the following (ref. 6):
11 Barton level system
- Tygon level system
- Mansell Level Monitoring System (MLMS) 11 Intermed iate range RCS level indicator (LT-7610)
IPEC NON-QUA LITY EMERG ENCY RELATED IP-EP-A D13 Revision 22 PLAN PROCEDURE ADMINISTRATIVE i-------i--------.---t-----r--
1 PROCEDURES REFERENCE USE Page 121 of 309 Attachm ent 1 - Emergency Action Level Bases Unit 3 The Reactor Vessel flange mating surface is at 69' (ref. 7). RCS level can be monitored by one or more of the following (ref. 7):
- 32 & 34 Intermediate Leg Level Indicators (ILLI)
I o Hand Held Ultrasonic Transducers
- Mansell Level Monitoring System
- Intermediate range RCS level indicator (LT-7610)
- RVLIS Post Unit 2 and Unit 3 Shutdown:
CU3.2 is not applicable.
IPEC Basis Reference{s):
- 1. Technical Specifications Table *1.1-*?
- 2. 2-POP-4.2 Operation Below 20% PRZR Leve! *r1ith Fuel in the Reactor
- 3. 3-POP-4.2 Operation Below 20% PRZR Levei with Fuel in the Reactor
- 6. 2-POP-4.2 Operation Below 20% PRZR Level with Fuel in the Reactor
- 7. 3-POP-4.2 Operation Below 20% PRZR Level with Fuel in the Reactor
IPEC NON-QU ALITY EMERGENCY RELATED IP-EP-AD13 Revision 22 PLAN PROCEDURE ADMINISTRATIVE ~-- ---1 ---- --.. ---- --1 PROCEDURES REFERENCE USE Page 122 of 309 Attachment 1 - Emergency Action Level Bases Figure C Unit 2 Component Elevations and Levels R1tffllad ff'% :r Hwocelt ;. .Q'.MG ~
k l ~.,w>>
ied*** *,
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IPEC NON-QUALITY EMERGENCY RELATED IP-EP-AD13 Revision 22 PLAN PROCEDURE ADMINISTRATIVE 1---------~--+---~---1 PROCEDURES REFERENCE USE Page 123 of 309 Attachment 1 - Emergency Action Level Bases
, Category: C - Cold Shutdown / Refueling System Malfunction Subcategor y: 3 - RCS Temperature Initiating Condition: Inability to maintain plant in cold shutdown EAL:
CA3.1 Alert Any unplanned event resulting in RCS temperature > 200°F for> Table C-3 duration OR RCS pressure increase > 10 psig due to a loss of RCS cooling (not applicable to solid plant operations)
Note 3: The Emergency Director should not wait until the applicable time has elapsed, but should declare the event as soon as it is determined that the conditio1~ will Hkely ex*~eea the appi:cable time .
Table C~3- RCS Rehe-~t D~ffat!on Thresholds
----- *---*r**
I RCS I I
Ccmtainment Ck:sure Duration Intact and not l N/A 60 minutes*
Reduced inventory I
--* -~*-*----- *-----
Not Intact OR Established 20 minutes*
Reduced Inventory - -
Not Established O minutes
- If an RCS heat removal system is in operation within this time f~me and RCS temperature is being reduced, this EAL is not applicable.
IPEC NON-QUALITY EMERGENCY RELATED IP-EP-AD13 Revision 22 PLAN PROCEDURE ADMINISTRATIVE 1------+------.------.-----;
PROCEDURES REFERENCE USE Page j 124 of j 309 Attachment 1 - Emergency Action Level Bases Mode Applicability:
5 - Cold Shutdown, 6 - Refueling NEI 99-01 Basis:
The first condition of this EAL addresses events in which RCS temperature exceeds the CU3.1 EAL threshold of 200 °F (ref. 1) for the durations identified in Table C-3.
Table C-3 duration #3 addresses complete loss of functions required for core cooling during Refuel and Cold Shutdown modes when neither containment closure nor RCS integrity are established. RCS integrity is in place when the RCS pressure boundary is in its normal condition for the Cold Shutdown mode of operation. No delay time is allowed for duration #3 because the evaporated reactor coolant* that may be released into the containment during this heat up condition could also be directly released to the en,;ironment.
Table C-3 duration #2 addresses the cornpla1e loss of functions required for core cooling for >
20 minutes during Refuel and Cold Shutdown modes when containment closure is established but RCS integrity is not *:;Stablished. RCS integrity should be assumed to be in place when the RCS pressure boundary is in its normal condition for the Cold Shutdown mode of operation. The allowed 20 minute time frame was included to allow operator action to restore the heat removal function, if possible. The allowed time frame is consistent with the guidance provided by Generic Letter 88-17, "Loss of Decay Heat Removal" and is believed to be conservative given that a low pressure containment barrier to fission product release is established. The table note indicates that this duration is not applicable if actions are successful in restoring an RCS heat removal system to operation and RCS temperature is being reduced within the 20 minute time frame.
Table C-3 duration #1 addresses complete loss of functions required for core cooling for greater than 60 minutes during Refuel and Cold Shutdown modes when RCS integrity is established.
As in duration #2 and #3, RCS integrity should be considered to be in place when the RCS pressure boundary is in its normal condition for the cold shutdown mode of operation. The status
\
of containment closure in this EAL is immaterial given that the RCS is providing a high pressure barrier to fission product release to the environment. The 60 minute time frame should allow sufficient time to restore cooling without there being a substantial degradation in plant safety.
IPEC NON-QUALITY EMERGENCY RELATED IP-EP-AD13 Revision 22 PLAN PROCEDURE ADMINISTRATIVE 1----------4---~-----1----~----l PROCEDURES REFERENCE USE Page 125 of 309
- Attachment 1 - Emergency Action Level Bases The 1O psig pressure increase covers situations where, due to high decay heat loads, the time provided to restore temperature control, should be less than 60 minutes. The table note indicates that duration #1 is not applicable if actions are successful in restoring an RCS heat removal system to operation and RCS temperature is being reduced within the 60 minute time frame assuming that the RCS pressure increase has remained less than 1O psig.
Escalation to Site Area would be via CS1 .1 should boiling result in significant RPV level loss leading to core uncovery.
This EAL is based on concerns raised by Generic Letter 88-17, "Loss of Decay Heat Removal."
A number of phenomena such as pressurization, vortexing, steam generator U-tube draining, RCS level differences when operating at a mid-loop condition, decay heat removal system design, and level instrumentation problems can lead to conditions where decay heat removal is lost and core uncovery can occur. NRC analyses show that sequences that can cause core uncovery in 15 to 20 minutes and severe core damage within an hour after decay heat removal is lost.
A loss of Technical Specification components alone is not intended to constitute an Alert. The same is true of a momentary unplanned excursion above 200 degrees F when the heat removal function is available.
The Emergency Director must remain alert to events or conditions that lead to the conclusion that exceeding the EAL threshold is imminent. If, in the judgment of the Emergency Director, an imminent situation is at hand, the classification should be made as if the threshold has been exceeded.
IPEC Basis:
Several instruments are capable of providing indication of RCS temperature with respect to the Technical Specification cold shutdown temperature limit (200°F, ref. 1). These include cold and hot leg RTDs, RHR heat exchanger inlet temperature, reactor vessel metal temperatures and core exit thermocouples (ref. 2, 3). Heat up and Cool down rate limitations are provided in Technical Specifications (ref. 4, 5).
IPEC NON-QUALITY EMERGENCY RELATED IP-EP-AD13 Revision 22 PLAN PROCEDURE ADMINISTRATIVE t----------~--+---~--
PROCEDURES REFERENCE USE Page 126 of 309 Attachment 1 - Emergency Action Level Bases The 1O psig pressure increase can b'e detected on:
- Unit 2 - MLMS or Pl-413K on panel SFF with computer input to the plant computer (ref.
2)
- Unit 3- MLMS, PT-410 and PT-411 on RVLIS, or Pl-413K (ref. 3)
Post Unit 2 and Unit 3 Shutdown:
CA3.1 is not applicable.
IPEC Basis Reference(s):
- 1. Technical Specificaticns Table *J.1-1
- 2. 2-POP-4.2 Operation Below 20% PRZR Level w!tll Fuel in the Reactor
- 3. 3-POP-4.2 Oper3tion Below 20% PRZR Level with Fuel in the Reactor
- 5. Technical Specifications 3.4Jl.2
IPEC NON-QUAL ITY EMERGENCY RELATED IP-EP-AD13 Revision 22 PLAN PROCEDURE ADMINISTRATIVE 1---------~-----~--1 PROCEDURES REFERENCE USE Page 127 of 309 Attachment 1 - Emergency Action Level Bases Category: C - Cold Shutdown I Refueling System Malfunction Subcategory: 4 - Communications Initiating Condition: Loss of all onsite or offsite communications capabilities EAL:
CU4.1 Unusual Event loss of all Table C-2 onsite (internal) communications capability affecting the ability to perform routine operations OR loss of all Table C-2 offsite (external) communications capability affecting the ability to perform offsite notifications
-~*
Table C~2 Communications Systems
-~~fl~"Cr.!"t System Onsite Offsite (internal) 1-I (external)
I Plant Telephone System Plant Radio System X
X I
I X
Page/Party System X Emergency Notification System (ENS) :x.
Mode Applicability:
5 - Cold Shutdown, 6 - Refueling, D - Defueled
IPEC NON-QUALITY EMERGENCY RELATED IP-EP-AD13 Revision 22 PLAN PROCEDURE ADMINISTRATIVE f - - - - - - - - - - ~ - - - - ~ - - - 1 PROCEDURES REFERENCE USE Page 128 of 309 Attachment 1 - Emergency Action Level Bases NEI 99-01 Basis:
The purpose of this EAL is to recognize a loss of communications capability that either defeats the plant operations staff ability to perform routine tasks necessary for plant operations or the ability to communicate problems with offsite authorities. The loss of offsite communications ability is expected to be significantly more comprehensive than the condition addressed by 1 O CFR 50.72.
The availability of one method of ordinary offsite communications is sufficient to inform state and local authorities of plant problems. This EAL /s intended to be used only when extraordinary means (e.g., relaying of information from radio transmissions, individuals being sent to offsite locations, etc.) are being utilized to make communications possible.
The Table C-2 list for onsite communications loss encompasses the loss of all means of routine communications (e.g., commercial telephones, sound powered phone systems, page party system and radios/ walkie-talkies).
The Table C-2 list for offsite communications loss encompasses the loss of all means of communications with offsite authorities. This includes the ENS, commercial telephone lines, telecopy transmissions, and dedicated phone systems.
IPEC Basis:
Unit2 Routine Unit 2 plant communications are conducted via telephone, radio, and Public Address (paging) systems.
The plant telephone and radio communications systems include two (2) PBX electronic switches, backup phone lines and a UHF radio system. A third PBX electronic switch is located at the EOF.
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PROCEDURES REFERENCE USE Page 129 of 309 Attachment 1 - Emergency Action Level Bases The public address system for Indian Point Unit 2 consists of "Page" and "Party" communications, which are common to both the primary (nuclear) and secondary (conventional) portions of Units 1 and 2. The "Page" and "Party" communications are also monitored at a speaker panel located in the CCR.
An in-house radio system provides communications between the Technical Support Center, the l&C office, and in-plant personnel.
Unit3 The Unit 3 communications system was designed to ensure the reliable, timely flow of information and action di;ectives necessary during normal operation, and particularly for the mitigation of emergenci0s.
The Public Address (PA) System has two subsystems: the Plant Party Paging and the Site PA System. The system consists ::if three channels. Two of these channels are common to both the primary (nuclear) and secondary (conventlonan portions of the plant. The third line provides an additional channel in the primary portion of the Unit 3 plant A "Page" handset is used for page purposes only and calls originating from this handset can be heard on all loudspeakers in the primary and secondary portions of the facility. The remaining two "Page-Party" handsets are used for h?,udspeakers paging and party-line conversations, as selected by the control room operator.
This EAL is the cold condition equivalent of the hot condition EAL SU4.2.
IPEC Basis Reference(s):
- 1. Unit 2 FSAR Section 7.7.4 Communications
- 2. Unit 3 FSAR Section 9.6.5 Plant Communications Systems
IPEC NON-QU ALITY EMERGENCY RELATED IP-EP-AD13 Revision 22 PLAN PROCEDURE ADMINISTRATIVE t--------+---.-----1--------r----
-1 PROCEDURES REFERENCE USE Page 130 of 309 Attachment 1 - Emergency Action Level Bases
~ Category: C - Cold Shutdown / Refueling System Malfunction Subcat egory: 5 - Inadvertent Criticality Initiating Condition: Inadvertent criticality EAL:
CU5.1 Unusual Event Unplanned sustained positive startup rate observed on nuclear instrumentation Mode Applica bility:
5 - Cold Shutdown, 6 - Refueling NEI 99-01 Basis:
This EAL addresses c1iticality events that occur in Cold Shutdown or Refueling modes
[(NUREG 1449, Shutdown and Low-Power Operatlon at Commercial Nuclear Power Plants in*
the United States)] such as fuel rniss-loctdmg P.vents and inadvertent dilution events.
This EAL indicates a potential degradation of the !eve! of safety of the plant, warranting an Unusual Event classification.
This condition can be identified using startup rme monitors. The term_ "sustained" is used in order to allow exclusion of expected short term positive startup rates from pianned fuel bundle or control rod movements during core alterations. These short term positive startup rates are the result of the increase in neutron population due to subcritical multiplication.
Escalation would be by Emergency Director Judgment.
IPEC Basis:
The startup rate for each channel is indicated at the main control board in terms of decades per minute over the range of -0.5 to +5.0 decades/min.
Post Unit 2 and Unit 3 Shutdown: CU5.1 is not applicable.
IPEC Basis Reference(s):
- 1. Unit 2 FSAR Section 7.4 Nuclear Instrumentation
- 2. Unit 3 FSAR Section 7.4 Excore Nuclear Instrumentation
IPEC NON-QUALITY EMERGENCY RELATED IP-EP-AD13 Revision 22 PLAN PROCEDURE ADMINISTRATIVE t---------t----r---+-----r------i PROCEDURES REFERENCE USE Page 131 of 309 Attachment 1 - Emergency Action Level Bases Category: C - Cold Shutdown / Refueling System Malfunction Subcategory: 6 -Loss of DC Power Initiating Condition: Loss of required DC power for 15 minutes or longer EAL:
CU6.1 Unusual Event
< 105 VDC bus voltage indications on all Technical Specification required 125 VDC buses for 2: 15 min. (Note 3)
Note 3: The Emergency Director should not w.:iit until the applicable time has elapsed, but should declare the event as soon as it is determined that the condition will iikely exceed the applicable time.
Mode Applicability:
5 - Cold Shutdown, 6 - Refuel NEI 99No-l Basis:
The purpose of this EAL is to reccgnlz& a loss of DC power compromising the ability to monitor and cont1ol the removal of decay heat during Cold Shutdown or Refueling operations.
This EAL is intended to be anticipatoiy in ai:* much as the operating crew may not have necessary indication and control of equipment needed io respond to the loss.
Plants will routinely perform maintenance on a train related basis during shutdown periods The required busses are the minimum allowed by Technical Specifications for the mode of operation. It is intended that the loss of the operating (operable) train is to be considered. If this loss results in the inability to maintain Cold Shutdown, the escalation to an Alert will be per CA3.1.
Fifteen minutes was selected as a threshold to exclude transient or momentary power losses.
IPEC NON-QUALITY EMERGENCY RELATED IP-EP-AD13 Revision 22 PLAN PROCEDURE ADMINISTRATIVE 1---------i----.-----1-----r----i PROCEDURES REFERENCE USE Page 132 of 309 Attachment 1 - Emergency Action Level Bases IPEC Basis:
For Indian Point Unit 2, each 480V bus has an automatic transfer switch to provide alternate DC power supplies to the 480V buses. This DC power is also supplied to 480V motor control centers. With two Residual heat removal (RHR) pumps and two RHR heat exchangers available, only one DC bus is required to provide control to a single train of RHR cooling during shutdown and refueling. With one RHR pump or one RHR heat exchanger isolated for repair, a condition could exist where a loss of a single DC power supply could result in a loss of ability to control decay heat removal. Redundant and alternate indications needed to monitor decay heat removal are powered from different DC sources such that only a loss of all DC power would result in the inability to monitor core cooling status.
The bus voltage is based on th1.:1 minimum bus voltage necessary for the operation of safety related equipment. Tl1!s voltage value incorporates a margin of at least 15 minutes of operation before the onset of inability to opernte loads.
This EAL is the cold condition equivalent of the hot condition ioss of DC power EAL SS7 .1.
Post Unit 2 and Unit 3 Shutdown:
CU6.1 is not applicable.
IPEC Basis Reference(s):
- 1. 2-AOP-DC-1 Loss Of A Battery Charger Or Any 125V DC Panel
- 2. 2-PT-R076A Station Battery 21 Load Test
- 3. 2-PT-R076C Station Battery 23 Load Test
- 4. 3-AOP-DC-1 Loss Of A 125V DC Panel
- 5. SOP-EL-003, Battery Charger and 125 Volt DC System Operations
- 6. 3PT-R156A Station Battery 31 Load Profile Service Test
IPEC NON-QUALITY EMERGENCY RELATED IP-EP-AD13 Revision 22 PLAN PROCEDURE ADMINISTRATIVE 1------ -------- -------- 1 PROCEDURES REFERENCE USE Page 133 of 309 Attachment 1 - Emergency Action Level Bases Category H - Hazards EAL Group: ANY (EALs in this category are applicable to any plant condition, hot or cold.}
Hazards are non-plant, system-related events that can directly ,or indirectly affect plant operation, reactor plant safety or personnel safety.
The events of this category pertain to the following subcategories:
- 1. Natural & Destructive Phenomena Natural events include hurricanes. earthquakes or tornados that have potential to cause plant structure or equipment damage of sufficient magnitude to threaten personnel or plant safety. Non-naturally occurring events that can cause damage to plant faciiities and include aircraft crashes, missile impacts, etc.
- 2. Fire or Explosion Fires can pose significant hazards to personnei and reactor safety. Appropriate for classification are fires within the site Protected Area or which may affect operability of vital equipment.
- 3. Hazardous Gas Non-naturally occurring events that can cause damage to plant facilities and include toxic, corrosive, asphyxiant or flammable gas leaks.
- 4. Security Unauthorized entry attempts into the Protected Area, bomb threats, sabotage attempts, and actual security compromises threatening loss of physical control of the plant.
- 5. Control Room Evacuation Events that are indicative of loss of Control Room habitability. If the Control Room must be evacuated, additional support for monitoring and controlling plant functions is necessary through the emergency response facilities.
IPEC NON-QUALITY EMERGENC Y RELATED IP-EP-AD13 Revision 22 PLAN PROCEDURE ADMINISTRATIVE 1 - - - - - - - - - - . - - - - - - - - ~ - - - - i PROCEDURES REFERENCE USE Page 134 of 309 Attachment 1 - Emergency Action Level Bases
- 6. Judgment The EALs defined in other categories specify the predetermined symptoms or events that are indicative of emergency or potential emergency conditions and thus warrant
. classification. While these EALs have been developed to address the full spectrum of possible emergency conditions which may warrant classification and subsequent implementation of the Emergency Plan, a provision for classification of emergencies based on operator/management experience and judgment is still necessary. The EALs of this category provide the Emergency Director the latitude to classify emergency conditions consistent with the established classification criteria based upon Emergency Director judgment.
IPEC NON-QU ALITY EMERG ENCY RELATED IP-EP-AD13 Revision 22 PLAN PROCEDURE ADMINISTRATIVE---------~----~--
PROCEDURES REFERENCE USE Page 135 of 309 Attachm ent 1 - Emergency Action Level Bases Category: H-Haz ards Subcategory: 1 - Natural & Destructive Phenomena Initiating Condition: Natural or destructive phenomena affecting the Protected Area l EAL:
Initiating Condition: Natural or destructive phenomena affecting the Protected Area EAL:
I HU1.1 Unusual Event Seismic event identified by any two of the following:
- Earthquake felt in plant by a consensus of Control Room Operators
- Unit 3 "Seismic Event Occurred" alarm (Panel SDF) or any amber Peak Shock Annunciator light is lit
- National Earthquake 'Information Center (Note 4)
Note 4: The NEIC can be contacted by calling (303) 273-8500 to confirm recent seismic activity in the vicinity of IPEC. Provide the analyst with the following IPEC coordinates: 41° 15' 55" north latitude, 73° 57' 08" west longitude. Alternatively go to the USGS NEIC website: http://earthguake.usgs.go v.
Mode Applicability:
All NEI 99-01 Basis:
This EAL is categorized on the basis of the occurrence of an event of sufficient magnit ude to be of concern to plant operators.
Damage may be caused to some portions of the site, but should not affect ability of safety functions to operate.
As defined in the EPRl-sponsored Guidelines for Nuclear Plant Response to an Earthquake, dated Octobe r 1989, a "felt earthquake" is: An earthquake of sufficient intensity such that: (a) the vibratory ground motion is felt at the nuclear plant site and recognized as an earthquake based on a consensus of control room operators on duty at the time, and (b) for plants with operable seismic instrumentation, the seismic switches of the plant are activated.
IPEC NON-Q UALITY EMER GENC Y RELATED IP-EP- AD13 Revisi on 22 PLAN PROCEDURE ADMIN ISTRA TIVE --------~---------<
PROC EDUR ES REFERENCE USE Page 136 of 309 Attach ment 1 - Emerg ency Action Level Bases The seismi c switch es are set at an acceleration of about 0.01g. The metho d of detect ion is based on instrumentation, validated by a reliable source, or operat or assessment.
The National Earthq uake Information Center can confirm if an earthq uake has occurr ed in the area of the plant.
IPEC Basis:
The method of detection with respect to emerg ency classification relies on the agreem ent of the shift operat or's on-dut y in the Control Room that the suspected ground motion is a "felt earthquake" as well as the actuation of the IPEC seismic i,:istrumentatio
- n. Conse nsus of the Control Room operators with respect to ground motion helps avoid unnec essary classification if the seismi c switch es inadvertently trip or detect vibrations not related to an earthq uake.
The NaHonal Earthquake Information Center can confirm if an earthq uake has occurr ed in the area of the plant. The NEIC can be contacted by calling (303) 273a85 00 to confirm recent seismi c activity in the vicinity of IPEC. Provide the'--analyst with the followi ng !PEC coordi nates:
41° 15' 55" north latitude, 73° 57' 08" west longit ude (ref 3).
Alterna tively go to the USGS NEIC website:
The Strong Motion Accelerograph is located on the Unit 3 46' Elev., base mat; 100' Elev.,
Contai nment Structure Wall directly above the 46' Elev.
This event escala tes to an Alert under EAL HA1.1 if the earthquake exceed s Opera ting Basis Earthquake (OBE) levels .
. IPEC Basis Reference(s):
- 1. Unit 2 FSAR Section 5.1.2.2 Design Load Criteria
- 2. Unit 3 FSAR Section 16.1.3 General Seismic Design Criteria and Dampi ng Values
- 3. Unit 2 FSAR Appen dix 2A Meteorological Update Section 4.1.1 Genera l
- 4. SOP-S-1 Seism ic Monitoring Equipment
- 5. 0-AOP-SEISMIC-1 Seism ic Event*
IPEC NON-QUAL ITY EMERGE NCY RELATED IP-EP-AD 13 Revision 22 PLAN PROCEDURE ADMINIST RATIVE - - - - - - - - - - - - - . - - - - - - - . . - -
PROCEDU RES REFERENCE USE Page 137 of 309 Attachmen t 1 - Emergency Action Level Bases Category: H- Hazards Subcategory: 1 - Natural & Destructive Phenomen a Initiating Condition: Natural or destructive phenomena affecting the Protected Area EAL:
HU1.2 Unusual Event Tornado striking within Protected Area boundary OR Sustained high winds> 90 mph {40 m/sec)
Mode Applicability:
All NEI 99-01 Basis:
This EAL is categorized on the basis of the occurrence of an event of sufficient magnitude to be of concern to plant operators.
This EAL is based on a tornado striking (touching down) or high winds within the Protected Area.
Escalation of this emergenc y classification level, if appropriate, would be based on visible damage, or by other in plant conditions, via HA1.2.
IPEC Basis:
A tornado striking (touching down) within the Protected Area warrants declaratio n of an Unusual Event regardless of the measured wind speed at the meteorolo gical tower. A tornado is defined as a violently rotating column of air in contact with the ground and extending from the base of a thunderstorm.
Sustained 90 mph is the Unit 3 design wind speed (ref. 1). As used in this EAL the term "sustained high winds" is meant to exclude brief gusts above the specified wind speed of 90 mph.
IPEC Basis Reference(s):
- 1.
- Unit 3 FSAR Section 1.3 General Design Criteria
IPEC NON-QUAL ITY EMERGE NCY RELATED IP-EP-AD13 Revision 22 PLAN PROCEDURE ADMINISTRATIVE t - - - - - - - - - - - . - - - - - + - - - - . - - - - -
PROCEDURES REFERENCE USE Page 138 of 309 Attachment 1 - Emergency Action Level Bases Category: H - Hazards Subcategory: 1 - Natural & Destructive Phenomena Initiating Condition: Natural or destructive phenomena affecting the Protected Area EAL:
HU1 .3 Unusual Event Turbine failure resulting in EITHER:
Casing penetration OR Damage to turbine or generator seals Mode Applicability:
Al!
NE! S9M01 Basis:
This EAL is categorized on the basls of the occurrence of an event of sufficient magnitude to be of concern to plant operator;:,.
This EAL addresses main turbine rotating component failures of sufficient magnitude to cause
- observable damage to the turbine casing or to !he seals of the turbine generator. Generator seal damage observed after generator purge does not meet the intent of this EAL because it did not impact normal operation of the plant.
Of major concern is the potential for leakage of combustible fluids (lubricating oils) and gases (hydrogen cooling) to the plant environs. Actual fires and flammable gas build up are appropriately classified via HU2.1 and HU3.1.
This EAL is consistent with the definition of a Unusual Event while maintaining the anticipatory nature desired and recognizing the risk to non-safety related equipment.
Escalation of this emergency classification level, if appropriate, would be to HA1.3 based on damage done by projectiles generated by the failure ..
IPEC NON-QUALITY EMERGENCY RELATED IP-EP-AD13 Revision 22 PLAN PROCEDURE ADMINISTRATIVE i--------t-----r---+------r------1 PROCEDURES REFERENCE USE Page 139 of 309 Attachment 1 - Emergency Action Level Bases IPEC Basis:
The turbine generator stores large amounts of rotational kinetic energy in its rotor. In the unlikely event of a major mechanical failure, this energy may be transformed into both rotational and translational energy of rotor fragments. These fragments may impact the surrounding stationary parts. If the energy-absorbing capability of these stationary turbine generator parts is insufficient, external missiles will be released. These ejected missiles may impact various plant structures, including those housing safety related equipment.
In the event of missile ejection, the probability of a strike on a plant region is a function of the energy and direction of an ejected missile and of the orientation of the turbine with respect to the plant region.
Post Unit 2 and Ur.it 3 Shutdown:
HU1 .3 is not applicable.
IPEC Basis Reference(s):
None
IPEC NON-QUAL ITY EMERGENCY RELATED IP-EP-AD13 Revision 22 PLAN PROCEDURE ADMINISTRATIVE 1 - - - - - - - - - ~ - - - - - ~ - - 1 PROCEDURES REFERENC E USE Page 140 of 309 Attachment 1 - Emergency Action Level Bases Category: H - Hazards Subcategory: 1 - Natural & Destructive Phenomena Initiating Condition: Natural or destructive phenomena affecting the Protected Area EAL:
HU1 .4 Unusual Event Flooding in any Table H-1 area that has the potential to affect safety-related equipmen t needed for the current operating mode
' Table H-1 Safe Shutdown Areas ~
,I-Control Building~ and associ ated/
1j ~ Electrical Tunnels and Battery Ro ~ms I 11
- Service _'Nater Pump Structure and1 1
1, Valve P!ts I 1
1 " Fuel Storage Building I
! 1t Primary Auxiliary BuildinG1/Fan House j
- V::.1por Containment Building ,!
- EOG Buildings I
- Auxiliary Feed-pump Build ing~
Condensate Storage Tank
_J
.i
- Refueling Water Storage T~k Mode Applicability:
All NEI 99-01 Basis:
This EAL is categorized on the basis of the occurrence of an event of sufficient magnitude to be of concern to plant operators.
This EAL addresses the effect of internal flooding caused by events such as component failures, equipment misalignment, or outage activity mishaps.
The Table H-1 Safe Shutdown Areas include those areas that contain systems required for safe shutdown of the plant, which are not designed to be partially or fully submerged (ref. 1, 2).
IPEC NON-QUA LITY EMERGENCY RELATED IP-EP-AD13 Revision 22 PLAN PROCEDURE ADMINISTRATIVE i---------t---~---1------.-----
1 PROCEDURES REFERENCE USE Page 141 of 309 Attachment 1 - Emergency Action Level Bases Escalation of this emergency classification level, if appropriate, would be based visible damage via HA 1.5, or by other plant conditions.
IPEC Basis:
The areas of concern are list in Table H-1 Safe Shutdown Areas. The listed areas consist of the designated Class I structures, systems and components. Class I structures, systems and components are those necessary to assure the capability to shut down the reactor and maintain it in the shutdown condition.
- Flooding in these areas could have the potential to cause a reactor trip and could result in consequential failures to important systems.
IPEC Basis Reference(s):
- 1. Unit 2 FSAR Section i .1 i .2 Cl:-13s:fic:ation of Particu!ar Structures and Equipment
- 2. Unit 3 FSAR Section 16. 1.2 Classification of Partieu!ar Structures and Equipment
IPEC NON-QUALITY EMERGENCY RELATED IP-EP-AD13 Revision 22 PLAN PROCEDURE ADMINISTRATIVE t-------t-----.----1-----.----------i PROCEDURES REFERENCE USE Page 142 of 309 Attachment 1 - Emergency Action Level Bases Category: H - Hazards Subcategory: 1 - Natural & Destructive Phenomena Initiating Condition: Natural or destructive phenomena affecting the Protected Area EAL:
HU1 .5 Unusual Event River Water Level > 14 ft. 6 in. (0MSL)
OR Service Water Bay (Intake Structure) water level< - 4 ft. 5 in. (0MSL)
Mode Applicability:
All NEi 99a01 Basis:
This EAL is categorized on the basis of the occurrence of an event of sufficient magnitude to b.e of concern to plant operators.
This EAL addresses external flooding and low intake (river) water le*1els that can also be precursors of more serious events.
IPEC Basis:
Unusual Events in this subcategory are categorized on the basis of the occurrence of an event of sufficient magnitude to be of concern to plant operators. Escalation of the event to an Alert occurs when the magnitude of the event is sufficient to result in damage to equipment contained in the specified location.
This EAL covers high river water level conditions that could be a precursor of more serious events as well as low river (intake) water level conditions which may threaten operability of plant cooling systems.
River water level ~ 14 ft. 6 in. above zero mean sea level (0MSL) corresponds to the maximum anticipated river run-up level (ref. 1).
IPEC NON-QUALITY EMERGENC Y RELATED IP-EP-AD13 Revision 22 PLAN PROCEDURE ADMINISTR ATIVE 1 - - - - - - - - - - + - - ~ - - - - - - - - 1 PROCEDURES REFERENCE USE Page 143 of 309 Attachment 1 - Emergency Action Level Bases Service water bay '(intake structure) level< 4.5 ft. below zero mean sea level (0MSL) corresponds to the minimum level to support design service water flow rate. (ref. 2).
Unit 2 A level indicator is mounted on the railing in the Service Water Pit. There are hose clamps at 6 inch intervals starting 6 inches below the platform. The platform is at 6 foot elevation, and the first bracket is at negative 2 foot elevation. There are fifteen hose clamps between the platform and the first bracket. The indicator continues down to the negative 4 foot 6 inch elevation.
Other indicators of high river water level are use of tapeirope measurement or outfall level reading (ref. 3).
Unit 3 To calculate river level, pla'.::e measuring device (at ieast 8' long) through an open floor slot on the river side of the traveling '.Vaier screens at the [ntake structure. Measure the distance between the 15 ft. elevation and cuirent river height. Subtract the measurement I from 15 ft. to determine river level (ref. 4 ).
IPEC Basis Reference(s):
- 1. Unit 2 FSAR Section 2.5, "Hydrology"
- 2. Unit 3 FSAR Section 9.6.1, "Service Water System"
- 3. 2-AOP-FLOOD, "Flooding"
- 4. 3-AOP-FLOOD, "Flooding"
IPEC NON-QUALITY EMERGENC Y RELATED IP-EP-AD13 Revision 22 PLAN PROCEDURE ADMINISTRATIVE 1-------+-------.------1-----,---------s PROCEDURES REFERENCE USE Page 144 of 309 Attachment 1 - Emergency Action Level Bases Category: H - Hazards Subcategory: 1 - Natural & Destructive Phenomena Initiating Condition: Natural or destructive phenomena affecting Vital Areas EAL:
HA1.1 Alert Two or more annunciators are lit on the Peak Shock Annunciator panel, one of which is red AND Strong Motion Event Indicator is lit AND Earthquake confirmed by any of the following:
111 Earthquake feit !n plant by a consensus of Control Room Operators
- National Earthquake lnforrnation Center {Note 4)
- Control Room indicat.ion of degraded perfor:nance l)f systems required for the safe shutdown of the piant Note 4: The NEIC can be contacted by cai!ing (303) 2t3~l35GO to confirm recent seismic activity in the vicinity of IPEC. Provide the analyst with the fol!owing IPEC coordinates: 41ti *15' 55" north latitude, 73° 57' 08" west longitude. Alternatively go to the USGS NEIC website: http://earthgua ke.usgs.gov.
Mode Applicability:
All NEI 99-01 Basis:
This EAL escalates from HU1 .1 in that the occurrence of the event has resulted in visible damage to plant structures or areas containing equipment necessary for a safe shutdown, or has caused damage to the safety systems in those structures evidenced by control indications of degraded system response or performance. The occurrence of visible damage and/or degraded system response is intended to discriminate against lesser events. The initial "report" should not be interpreted as mandating a lengthy damage assessment prior to classification. No attempt is made in this EAL to assess the actual magnitude of the damage.
IPEC NON-QUA LITY EMERGENCY RELATED IP-EP-AD13 Revision 22 PLAN PROCEDURE ADMINISTRATIVE i - - - - - - - - - - - - . - - - - t - - - - - . - - - - - - - - 1 PROCEDURES REFERENCE USE Page 145 of 309 Attachment 1 - Emergency Action Level Bases The significance here is not that a particular system or structure was damaged, but rather, that the event was of sufficient magnitude to cause this degradation.
Escalation of this emergency classification level, if appropriate, would be based on System Malfunction EALs.
Seismic events of this magnitude can result in a vital area being subjected to forces beyond design limits, and thus damage may be assumed to have occurred to plant safety systems.
The National Earthquake Information Center can confirm if an earthquake has occurred in the area of the plant.
IPEC Basis:
Ground motion acceleration of 0.1 g horizontal or 0.05 g vertical is the Operating Basis Earthquake for IPEC (ref. 1, 2).
The seismic monitoring and recording equipment is normally mai9tained in a standby condition.
The National Earthquake Information Center can confirm if an earthquake has occurred in the area of the plant. The NEIC can be contacted by calling (303) 273*8500 to confirm recent seismic activity in the vicinity of IPEC. Provide the analyst with the following IPEC coordinates:
41° 15' 55" north latitude, 73° 57' 08" west longitude (ref. 3).
Alternatively go to the USGS NEIC website:
http:/Jearthguake.usgs.gov The Strong Motion Accelerograph is located on the Unit 3 46' Elev., base mat; 100' Elev.,
Containment Structure Wall directly above the 46' Elev.
IPEC Basis Reference(s):
- 1. Unit 2 FSAR Section 5.1.2.2 Design Load Criteria
- 2. Unit 3 FSAR Section 16.1.3 General Seismic Design Criteria and Damping Values
- 3. Unit 2 FSAR Appendix 2A Meteorological Update Section 4.1 .1 General
IPEC NON-QUALITY EMERGENCY RELATED IP-EP-AD13 Revision 22 PLAN PROCEDURE ADMINISTRATIV E 1---------+--~--+-----,-----1 PROCEDURES REFERENCE USE Page 146 of 309 Attachment 1 - Emergency Action Level Bases Category: H - Hazards Subcategory: 1 - Natural & Destructive Phenomena Initiating Condition: Natural or destructive phenomena affecting Vital Areas EAL:
HA1.2 Alert Tornado striking or sustained high winds> 90 mph (40 m/sec) resulting in EITHER:
Visible damage to any Table H-1 plant structures containing safety systems or components OR Control Room indication of degraded performance of safety systems pa~~-1 Safe Shutdown Areas I r, Control Buiidings and associated I Eiectr!Gal Tunnels and Battery Rooms
! , Serice Water Pump Structure and j Valve Pits 11
- Fuel Storage Building
'I'
- Primary Auxillar/ Building/Fan House
- Vapor Containment Building
- EOG Buildings
- Auxiliary Feed-pump Building
- Condensate Storage Tank
- Refueling Water Storage Tank Mode Applicability:
All NEI 99-01 Basis:
This EAL escalates from HU1 .2 in that the occurrence of the event has resulted in visible damage to plant structures or areas containing equipment necessary for a safe shutdown, or has caused damage to the safety systems in those structures evidenced by control indications of degraded system response or performance. The occurrence of visible damage and/or degraded system response is intended to discriminate against lesser events. The initial "report" should not be
IPEC NON-QUAL ITY EMERGE NCY* RELATED IP-EP-AD 13 Revision 22 PLAN PROCEDURE ADMINIST RATIVE t--------1-----.---1-----..-------i PROCEDU RES REFERENCE USE Page 147 of 309 Attachmen t 1 - Emergency Action Level Bases interpreted as mandating a lengthy damage assessme nt prior to classification. No attempt is made in this EAL to assess the actual magnitude of the damage. The significance here is not that a particular system or structure was damaged, but rather, that the event was of sufficient magnitude to cause this degradation.
Escalation of this emergenc y classification level, if appropriate, would be based on System Malfunction EALs.
This EAL is based on a tornado striking (touching down) or high winds that have caused visible damage to structures containing functlons or systems required for safe shutdown of the plant.
IPEC Basis:
This threshold addresses events that may have resulted in Safe Shutdown Areas being subjected to forces (tornado or sustained high winds > 90 mph, ref. 1} beyond de~ign limits and thus damage may be c-1ssumecJ to have occurred to p!ant safety systems. Table H-1 Safe Shutdown Areas house equipmen t the operation of which may be needed to ensure the reactor safely reaches and is maintained shutdown (ref. 2, 3). As used in this EAL the term "sustained high winds" is meant to exclude brief gusts above the specified wind speed of 90 mph.
A tornado striking (touching down) within the Protected Area resulting in visible damage warrants declaration of an Alert regardless of the measured wind speed at the meteorolo gical tower. A tornado is defined as a violently rotating column of air in contact with the ground and extending from the base of a thunderstorm.
IPEC Basis Reference(s):
- 1. Unit 3 FSAR Section 1 .3 General Design Criteria
- 2. Unit 2 FSAR Section 1.11.2 Classification of Particular Structures and Equipment
- 3. Unit 3 FSAR Section 16.1.2 Classification of Particular Structures and Equipment
)
IPEC NON-QU ALITY EMERG ENCY RELATED IP-EP-A D13 Revision 22 PLAN PROCEDURE ADMIN ISTRAT IVE 1 - - - - - - - + - - . . . . . . . - - - - + - - - - - . - - - - - 1 PROCE DURES REFERENCE USE Page 148 of , 309 Attachm ent 1 - Emergency Action Level Bases Category: H-Haz ards Subcategory: 1 - Natural & Destructive Phenomena Initiating Condition: Natural or destructive phenomena affecting Vital Areas EAL:
HA1.3 Alert Vehicle crash resulting in visible damage to EITHER:
Any Table H-1 plant structures containing safety systems or compon ents OR Control Room indication of deQraded performance of safety systems I T~~e HK1 Safe Shutdown Areas 11 n
ontrol Buildings and associated 11 Electrical Tunne!s and Battery Rooms Service Water Pump Structure and Ii i' Valve Pits I
- Fuel Storage Building I
- Primary Auxiliary Building/Fan House
- Vapor Containment Building
- EOG Buildings
- Auxiliary Feed-pump Building
- Condensate Storage Tank
- Refueling Water Storage Tank Mode Applicability:
All NEI 99-01 Basis:
The occurrence of visible damage and/or degraded system response is intende d to discriminate against lesser events. The initial report should not be interpreted as mandating a lengthy damage assessment prior to classification. No attempt is made in this EAL to assess the actual magnitude of the damage. The significance here is not that a particul ar system or structure was damaged, but rather, that the event was of sufficient magnitu de to cause this degradation.
IPEC NON-QUALITY EMERGENCY , RELATED IP-EP-AD13 Revision 22 PLAN PROCEDURE ADMINISTRATIVE 1 - - - - - - - - + - - - - - - - , - - - - - + - - - - - , - - - - - i PROCEDURES REFERENCE USE Page 149 of 309 Attachment 1 - Emergency Action Level Bases Es,calation of this emergency classification level, if appropriate, would be based on System Malfunction EALs.
This EALaddresses vehicle crashes within the Protected Area that results in visible damage to vital areas or indication of damage to safety structures, systems, or components containing functions and systems required for safe shutdown of the plant.
IPEC Basis:
Table H-1 Safe Shutdown Areas house equipment the operation of which may be needed to ensure the reactor reaches arid is maintained in shutdown (ref. 1, 2).
If the vehicle crash is dek~rmined to be hostile in r.ature, the event is classified under security based EALs.
IPEC Basis Referencoe(s):
- 1. Unit 2 FSAR Sectio11 1.11.2 Clgssi1ication of Parti:;ular Structures and Equipment
- 2. Unit 3 FSAR Section 16. *; .2 Classification of Particular Structures and Equipment
IPEC NON-QUALITY EMERGENCY RELATED IP-EP-AD13 Revision 22 PLAN PROCEDURE ADMINISTRATIVE 1---------1----,------+-----,--~
PROCEDURES REFERENCE USE Page 150 of 309 Attachment 1 - Emergency Action Level Bases Category: H - Hazards Subcategory: 1 - Natural & Destructive Phenomena Initiating Condition: Natural or destructive phenomena affecting Vital Areas EAL:
HA1.4 Alert Turbine failure-generated projectiles resulting in EITHER:
Visible damage to or penetration of any Table H-1 area containing safety systems or components OR Control room indication of degraded performance o_f_s_a_fe_t......_s,,_s_t_em_s_ _ _ _ _ _ ____.
======-===--= *====:== = = = = = = = = = = ; i
[, Tab;e H-1 Safe Shutdt_>w_n_A_rnas =1
- Cantrel Buii::iings and associated Electrlcal Tunnels and
,J Service Water Pump Structure and Valve Pits
~ f ue! Storage Bui!ding
~ Prirnary 'Auxiliary Building/Fan House
- Vapor Containment Building
"' ECG Buildings 11 Auxiliary Feed-pump Building
- Condensate Storage Tank
- Refueling Water Storage Tank Mode Applicability:
All NEI 99-01 Basis:
This EAL escalates from HU1 .3 in that the occurrence of the event has resulted in visible damage to plant structures or areas containing equipment necessary for a safe shutdown, or has caused damage to the safety systems in those structures evidenced by control indications of degraded system response or performance. The occurrence of visible damage and/or degraded system response is intended to discriminate against lesser events. The initial "report" should not be interpreted as mandating a lengthy damage assessment prior to classification. No attempt is
IPEC NON-QU ALITY EMERGENCY RELATED IP-EP-AD13 Revision 22 PLAN PROCEDURE ADMINISTRATIVE f---------+---------1---~---1 PROCEDURES REFERENCE USE Page 151 of 309 Attachment 1 - Emergency Action Level Bases made in this EAL to assess the actual magnitude of the damage. The significance here is not that a particular system or structure was damaged, but rather, that the event was of sufficient magnitude to cause this degradation.
Escalation of this emergency classification level, if appropriate, would be based on System Malfunction EALs.
This EAL addresses the threat to safety related equipment imposed by projectiles generated by main turbine rotating component failures. Therefore, this EAL is consistent with the definition of an Alert in that the potential exists for actual or substantial potential degrad ation of the level of safety of the plant.
IPEC Basis:
The turbine generator stores large amounts of rotational kinetic energy in its rotor.
In the unlikely event of a major mechanical failure, this energy may be transformed into both rotational and translational energy of rotor fragments. These fragments may impact the surrounding stationary parts. If the energy-absorbing capability of these stationary turbine generator parts is insufficient, external missiles will be released. These ejected missiles may impact various plant structures, including those housing safety related equipment.
In the event of missile ejection, the probability of a strike on a plant region is a function of the energy and direction of an ejected missile and of the orientation of the turbine with respect to the plant region.
The list of Table H-1 areas includes all areas containing safety-related equipment, their controls, and their power supplies (ref. 1, 2).
Post Unit 2 and Unit 3 Shutdown: HA 1.4 is not applicable.
IPEC Basis Reference(s):
- 1. Unit 2 FSAR Section 1.11.2 Classification of Particular Structures and Equipm ent
- 2. Unit 3 FSAR Section 16.1.2 Classification of Particular Structures and Equipm ent
IPEC NON-QUA LITY EMERG ENCY RELATED IP-EP-A D13 Revision 22 PLAN PROCEDURE ADMINIS TRATIVE 1------1-----,---+---,------1 PROCED URES REFERENCE USE Page 152 of 309 Attachm ent 1 - Emergen cy Action Level Bases Category: . H- Hazards Subcategory: 1 - Natural & Destructive Phenom ena Initiating Condition: Natural or destructive phenome na affecting Vital Areas EAL:
HA1.5 Alert Flooding in any Table H-1 area resulting in EITHER:
An electrical shock hazard that precludes necessa ry access to operate or monitor safety equipme nt OR Control room indication of degraded performance of required safety systems I~,-- _Tab~: H~1 Safe Shut;, 1 ~reas 7 I* Control Buildings a,-.:1 associated - I II Ek:ctrical Tunnels and Battery Rooms I 1
- Service 'Nater Pump Structure and 1
- Valve Pits
- Fuel Storage Building
- Primary Auxiliary Building/Fan House
- Vapor Containment Building
- EOG Buildings
- Auxiliary Feed-pump Building
- Condens ate Storage Tank
- Refueling Water Storage Tank Mode Applicability:
All NEI 99-01 Basis:
This EAL escalate s from HU 1 .4 in that the occurrence of the event has resulted in visible damage to plant structures or areas containing equipment necessa ry for a safe shutdown, or has caused damage to the safety systems in those structures evidenced by control indications of degrade d
system response or performance. The occurrence of visible damage and/or degrade d system
IPEC NON-QUAL ITY EMERGE NCY RELATED IP-EP-AD 13 Revision 22 PLAN PROCEDURE ADMINIST RATIVE 1----------+---,----+--------.---
PROCEDU RES REFERENCE USE Page 153 of 309 Attachme-nt 1 - Emergenc y Action Level Bases response is intended to discriminate against lesser events. The initial "report" should not be interpreted as mandating a lengthy damage assessment prior to classification. No attempt is made in this EAL to assess the actual magnitude of the damage. The significance here is not that a particular system or structure was damaged, but rather, that the event was of sufficient magnitude to cause this degradation.
Escalation of this emergenc y classification level, if appropriate, would be based on System Malfunction EALs.
This EAL addresses the effect of interna! flooding caused by events such as componen t failures, equipmen t misalignment, or outage activity mishaps. It is based on the degraded performan ce of systems, or has created industrial safety hazards (e.g., electrical shock) that preclude necessary access to operate or monitor safety equipment. The inability to access, operate or monitor safet.y equipmen t represents an actuai or substantial potential degradatio n of the level of safety cf the plant.
Flooding as used in this EAL describes a condition where water is entering the room faster than installed equipment is capable of removal, resulting in a rise of water level within the room. Classification of this EAL should not be delayed while corrective actions are being taken to isolate the water source.
IPEC Basis:
Flooding in Table H-1 Safe Shutdown Areas could have the potential to cause a reactor trip and could result in consequential failures to important systems (ref. 1, 2).
IPEC Basis Refererice(s):
- 1. Unit 2 FSAR Section 1.11.2 Classification of Particular Structures and Equipment
- 2. Unit 3 FSAR Section 16.1.2 Classification of Particular Structures and Equipment
IPEC NON-QUALITY EMERGENCY RELATED IP-EP-AD13 Revi.sion 22 PLAN PROCEDURE
,ADMINISTRATIVE t--------t------.-----+-----.-------1 PROCEDURES REFERENCE USE Page 154 of 309 I
Attachment 1 - Emergency Action Level Bases Category: H - Hazards Subcategory: 1 - Natural & Destructive Phenomena Initiating Condition: Natural or destructive phenomena affecting Vital Areas EAL:
- - HA1.6 Alert River Water Level > 15 ft. (0MSL)
OR (
Low Service Water Bay (Intake Structure) level resulting in a loss of service water flow Mode Applicability:
Al!
NEI 99-01 Basis:
This EAL escalates from HU1 .4 in thatthe oc:c:wrence of the event has resulted in visible damage to plant structures or an=1/4as containing equipment necessary for a safe shutdown, or has caused damage to the safety systems in thos& structures evidenced by control indications of degraded system response or performance. The occurrence of visible damage and/or degraded system response is intended to discriminate against lesser events. The initial "report" should not be interpreted as mandating a lengthy damage assessment prior to classification. No attempt is made in this EAL to assess the actual magnitude of the damage. The significance here is not that a particular system or structure was damaged, but rather, that the event was of sufficient magnitude to cause this degradation.
Escalation of this emergency classification level, if appropriate, would be based on System Malfunction EALs.
This EAL addresses other site specific phenomena that result in visible damage to vital areas or results in indication of damage to safety structures, systems, or components containing functions and systems required for safe shutdown of the plant (such as hurricane, flood, or seiche) that can also be precursors of more serious events.
IPEC NON-QU ALITY EMERGENCY RELATED IP-EP-AD13 Revision 22 PLAN PROCEDURE ADMINISTRATIVE 1---------~----~----1 PROCEDURES REFERENCE USE Page 155 of 309 Attachment 1 - Emergency Action Level Bases IPEC Basis:
HA 1.6 covers high river water level conditions that could pose a significant threat to plant safety as well as low river (intake) water level conditions which may threaten operab ility of vital emergency plant cooling systems.
A river water level of 15.25 ft. (rounded to 15 ft.). is considered the critical elevatio n beyond which water would begin to enter plant buildings.
Low intake levels could be caused either by Intake Structure and/or Traveling Screen blockage a
due to debris or ice or due to loss*of level in the Hudson River. This represents a significant challenge to plant safety.
Unit2 A level indicator is mounted on the railing in the Service Water Pit. There are hose clamps at 6 inch intervals starting 6 inches below the platform. The platform is at 6 foot elevatio n, and the first bracket is at negative 2 foot elevation. There are fifteen ho*se clamps betwee n the platform and the first bracket. The indicator continues down to the negative 4 foot 6 inch elevatio r n.
Other indicators of high river water level are use of tape/rope measurement or outfall level reading (ref. 3). !
Unit 3 To calculate river level, place measuring device (at least 8' long) through an open floor slot on the river side of the traveling water screens at the intake structure. Measure the distanc e
between the 15 ft. elevation and current river height. Subtract the measurement "L" from 15 ft.
to determine river level (ref. 4).
The Unit 3 Service Water Purpp suctions are at 10 ft. 11 3/8 in. below 0MSL (ref.
2).
IPEC NON-QU ALITY EMERGENCY \' RELATED IP-EP-AD13 Revision 22 PLAN PROCEDURE ADMINISTRATIVE ~ - - - - - - - - - - - - - - . - - - -
PROCEDURES REFERENCE USE Page 156 of 309 Attachment 1 - Emergency Action Level Bases IPEC Basis Reference(s):
- 1. Unit 2 FSAR Section 2.5, "Hydrology"
- 2. Unit 3 FSAR Section 9.6.1, "Service Water System"
- 3. 2-AOP-FLOOD, "Flooding"
- 4. 3-AOP-FLOOD, "Flooding"
- 5. 3-AOP-SWL-1, "Low Service Water Bay Level"
IPEC NON-QUALITY EMERGE NCY RELATED IP-EP-AD 13 Revision 22 PLAN PROCEDURE ADMINIST RATIVE 1---- ----- ~---l ----~ ----1 PROCEDU RES REFERENCE USE Page 157 of 309 Attachmen t 1 - Emergenc y Action Level Bases Category: H - Hazards Subcategory: 2 - Fire or Explosion Initiating Condition: Fire within the Protected Area not extinguished within 15 minutes of detection or explosion within the Protected Area EAL:
HU2.1 Unusual Event Fire in any Table H-1 area not extinguished within .15 minutes (Note 3) of Control Room notification or verification of a control room fire alarm Note 3: The Emergency Director should not wait until the applicable time has elapsed, but should declare the event as soon as it is determined that the condition wi!l likely exceed the applicable time.
IL . Table H Safe Shutdown Areas _J
'.*1! c Control Btiildings' and associated l Electrical Tunr:eis and Batter/ Rooms I.II " Seniice \'Vater Pump Structure and Valve Pits
!I o Fuel Storage Building I'
- Primary Auxi!ia;y Building/Fan House
- Vapor Contairnnent Building
- EOG Buildings
- Auxiliary Feed-pum p Building
- Condensate Storage Tank
- Refueling Water Storage Tank Mode Applicability:
All NEI 99-01 Basis:
This EAL addresses the magnitude and extent of fires that may be potentially significant precursors of damage to safety systems. It addresses the fire, and not the degradatio n in performance of affected systems that may result.
As used here, detection is visual observation and report by plant personnel or sensor alarm indication.
............... , ..... , .... , ............... , .--- .,., .... ,., .......... .,.. .. . -~-......................
IPEC NON-QUAL ITY EMERGENCY RELATED IP-EP-AD13 Revision 22 PLAN PROCEDURE ADMINISTRATIVE 1-------1------,----+-----~---i PROCEDURES REFERENCE USE Page 158 of 309 Attachment 1 - Emergency Action Level Bases The 15 minute time period begins with a credible notification that a fire is occurring, or indication of a fire detection system alarm/actuation. Verification of a fire detection system alarm/actuation includes actions that can be taken within the control room or other nearby site specific location to ensure that it is not spurious. An alarm is assumed to be an indication of a fire unless it is disproved within the 15 minute period by personnel dispatched to the scene. In other words, a personnel report from the scene may be used to disprove a sensor alarm if received within 15 minutes of the alarm, but shall not be required to verify the alarm.
The intent of this 15 minute duration is to size the fire and to discriminate against small fires that are readily extinguished (e.g., smoldering waste paper basket).
Escalation of this emergency classification !~vel, if appropriate, would be based on HA2.1.
IPEC Basis:
Fire, as used in this EAL, means 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.
IPEC Basis Reference(s):
- 1. Unit 2 FSAR Section 1.11.2 Classification of Particular Structures and Equipment
- 2. Unit 3 FSAR Section 16.1.2 Classification of Particular Structures and Equipment
IPEC NON-QUAL ITY EMERGENCY RELATED IP-EP-AD13 Revision 22 PLAN PROCEDURE ADMINISTRATIVE 1--------+---.--------....----1 PROCEDURES REFERENCE USE Page 159 of 309 Attachment 1 - Emergency Action Level Bases Category: H- Hazards Subcategory: 2 - Fire or Explosion Initiating Condition: Fire within the Protected Area not extinguished within 15 minutes of detection or explosion within the Protected Area EAL:
HU2.2 Unusual Event Explosion within Protected Area boundary Mode Applicability:
All NEI 99-01 Basis: .
This EAL addresses the magnitude and extent of explosions that may be potentially significant precursors of damage to safety systems. It addresse~ the explosion, and not the degradation in performance of affected systems that may result.
As used here, detection is visual observation a:id report by plant personnel or sensor alarm indication.
This EAL addresses the magnitude and extent of explosions that may be potentially significant precursors of damage to safety systems. It addresses the explosion, and not the degradation in performance of affected systems that may result.
This EAL addresses only those explosions of sufficient force to damage permanent structures or equipment within the Protected Area.
No attempt is made to assess the actual magnitude of the damage. The occurrence of the explosion is sufficient for declaration.
The Emergency director also needs to consider any security aspects of the explosion, if applicable.
Escalation of this emergency classification level, if appropriate, would be based on HA2.1.
IPEC NON-QUALITY EMERGENCY RELATED IP-EP-AD13 Revision 22 PLAN PROCEDURE ADMIN ISTRA TIVE- -------~ -----~_ _,
PROCEDURES REFERENCE USE Page 160 of 309 Attachment 1 - Emergency Action Level Bases IPEC Basis: .
As used here, an explosion is a rapid, violent, unconfined combustion or a catastrophic failure of pressurized equipment that potentially imparts significant energy to nearby structures and
(
materials.
If the explosion is determined to be hostile in nature, the event is classified under security based EALs.
IPEC Basis Reference(s):
None
IPEC NON-QUALITY EMERGENC Y RELATED IP-EP-AD13 Revision 22 PLAN PROCEDURE ADMINISTR ATIVE 1-------+--~----~---1 PROCEDUR ES REFERENCE USE Page 161 of 309 Attachment 1 - Emergency Action Level Bases Category: H- Hazards Subcategory: 2 - Fire or Explosion Initiating Condition: Fire or explosion affecting the operability of plant safety systems required to establish or maintain safe shutdown EAL:
HA2.1 Alert Fire or explosion resulting in EITHER:
Visible damage to any Table H-1 area containing safety systems or components OR.
Control Room indication of degraded performance of safety systems
[_ Table H-~ - S~*fa Snutd~ Are~~:]
ir JI .. Control Eui!dings a;1d associated Electricai Tunne!s and Battery Rooms 7r 11 Ir o Service \Nater Pump Structure and Vaive Pits
- Fuel Storage Bui!d1ng
- Primary Auxiliary Building/Fan House
- Vapor Containment Building
- EDG Buildings
- Auxiliary Feed-pump Building
- Condensate Storage Tank
- Refueling Water Storage Tank Mode Applicability:
All NEI 99-01 Basis:
Visible damage is used to identify the magnitude of the fire or explosion and to discriminate against minor fires and explosions.
The reference to structures containing safety systems or components is included to discriminate against fires or explosions in areas having a low probability of affecting safe
IPEC NON-QUALITY EMERGENC Y RELATED IP-EP-AD13 Revision 22 PLAN PROCEDURE ADMINISTR ATIVE 1----- -----~ ----+- ------1 PROCEDUR ES REFERENCE USE Page 162 of 309 Attachment 1 - Emergency Action Level Bases operation. The significance here is not that a safety system was degraded but the fact that the fire or explosion was large enough to cause damage to these systems.
The use of visible damage should not be interpreted as mandating a lengthy damage assessment prior to classification. The declaration of an Alert and the activation of the Technical Support Center will provide the Emergency Director with the resources needed to perform detailed damage assessments.
The Emergency Director also needs to consider any security aspects of the explosion.
Escalation of this emergency classification level, if appropriate, will be based on System Maifunctions, Fission Product Barrier Degradation or Abnormal Rad Levels / Radiological Effluent EALs.
IPEC Basis:
The listed areas contain functions and $ystams required for the safe shutdown of the plant (ref.
1 ).
Fire, as used in this EAL, means 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.
An explosion is a rapid, violent, unconfined combustion or a catastrophic failure of pressurized equipment that potentially imparts significant energy to nearby structures and materials.
A steam line break or steam explosion that damages permanent structures or equipment would be classified under this EAL. The method of damage is not as important as the
\.,
degradation of plant structures or equipment. The need to classify the steam line break itself is considered in fission product barrier degradation monitoring (EAL Category F).
IPEC Basis Reference{s):
- 1. Unit 2 FSAR Section 1.11.2 Classification of Particular Structures and Equipment
- 2. Unit 3 FSAR Section 16.1.2 Classification of Particular Structures and Equipment
IPEC NON-QUAL ITY EMERGENCY RELATED IP-EP-AD13 Revision 22 PLAN PROCEDURE ADMINISTRATIVE 1 - - - - - - - - - - - - . - - - t - - - - , - - - -
PROCEDURES REFERENCE USE Page 163 of 309 Attachment 1 - Emergency Action Level Bases Category: H- Hazards Subcategory: 3 - Hazardous Gas Initiating Condition: Release of toxic, corrosive, asphyxiant or flammable gases deemed detrimental to normal plant operations EAL:
HU3.1 Unusual Event Toxic, corrosive, asphyxiant or flammable gases in amounts that have or could adversely affect normal plant operations Mode Applicability:
All NEI 99-01 Basis:
This EAL is based on the release of toxic, corrosive, asphyxiant or flammable gases of sufficient quantity to affect normal plant operations.
The fact that SCBA rnay ba worn does not eliminate the need to declare the event.
This EAL is not intended to require significant assessment or quantification. It assumes an uncontrolled process that has the potential to affect plant operations. This would preclude smali or incidental releases, or releases that do not impact structures needed for plant operation.
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.
Escalation of this emergency classification level, if appropriate, would be based on HA3.1.
IPEC NON-Q UALITY EMER GENC Y RELAT ED. IP-EP- AD13 Revisi on 22 PLAN PROCEDURE ADMIN ISTRA TIVE 1-------+-----r-----+---------.---~
PROC EDUR ES REFERENCE USE Page 164 of 309 Attach ment 1 - Emerg ency Action Level Bases IPEC Basis:
As used in this EAL, affecting norma l plant operations means that activiti es at the plant site associ ated with routine testing, mainte nance, or equipm ent operat ions, in accord ance with norma l operat ing or admini strativ e proced ures have been impact ed.
Entry into abnorm al or emerg ency operat ing proced ures, or deviation from normal securit y or radiolo gical contro ls postur e, is a depart ure from norma l plant operat ions and thus would be consid ered to have been affecte d.
The releas e may have origina ted within the Site Boundary, or it may have origina ted offsite and subseq uently drifted onto the Site Boundary. Offsite events (e.g.,
tanker truck accide nt releas ing toxic gases, etc.) resulting in the plant b*:ing within the evacua tion area should also be consid ered in this EAL becau se of the adverse t~ffect on norma l plant operat ions.
Some gases are toxic by their very nature. Ott,ers, !ike carbon dioxide
, can be lethal if it reduce s oxygen to iow concen tration s (asphyxiant) that are immed iateiy dange rous to life and health (IDLH). Oxyge n deficleni. atmos pheres (iess than 19.5% oxygen
) are consid ered IDLH (ref. 1). NRC positiGn is that anytim e carbon dioxide !s discha rged in plant areas such that the area becom es uninhabitab!B, regard less of whethe r anyone is in the areas, conditi ons for classif ication exist. The EAL assum es an uncontrolled proces s that has the potent ial to affect plant operat ions or person nel safety. Releases occurring during planne d surveil lance activiti es or planne d mainte nance /tag-ou t activities, therefore, are excluded.
Should the release affect access to plant Safe Shutdo wn Areas, escala tion to an Alert would be based on EAL HA3.1. Should an explosion or fire occur due to flamm able gas within an affecte d plant area, an Alert may be appropriate based on EAL HA2.1 IPEC Basis Reference(s):
None
IPEC NON-QUA LITY EMERGENCY RELATED IP-EP-AD13 Revision 22 PLAN PROCEDURE ADMINISTRATIVE 1--------1---~---1-----~--
l PROCEDURES REFERENCE USE Page 165 of 309 Attachment 1 - Emergency Action Level Bases Category: H - Hazards Subcategory: 3 - Hazardous Gas Initiating Condition: Release of toxic, corrosive, asphyxiant or flammable gases deemed detrimental to normal operation of the plant EAL:
HU3.2 Unusual Event Recommendation by local, county or state officials to evacuate or shelter site personnel based on offsite event Mode Applicability:
All NEI 99-01 Basis:
This EAL is based on the release of toxic, corrosive, asphyxiant or flammable gases of sufficient quantity to affect normal plant operations.
The fact that SCBA may be worn does not eliminate the need to declare the event.
This EAL is not intended to require significant assessment or quantification. It assumes an uncontrolled process that has the potential to affect plant operations. This would preclude small or incidental releases, or releases that do not impact structures needed for plant operation.
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.
Escalation of this emergency classification level, if appropriate, would be based on HA3.
IPEC NON-QUAL ITY EMERGENCY RELATED IP-EP-AD13 Revision 22 PLAN PROCEDURE ADMINISTRATIVE 1--------------r----+-------.---------1 PROCEDURES REFERENCE USE Page 166 of 309 Attachment 1 - Emergency Action Level Bases IPEC Basis:
This EAL is based on the existence of an uncontrolled release originating offsite and local, county or state officials have reported the need for evacuation or sheltering of site personnel.
Offsite events (e.g., tanker truck accident releasing toxic gases, etc.) are considered in this EAL because they may adversely affect normal plant operations.
State officials may determine the evacuation area for offsite spills by using the Department of Transportation (DOT) Evacuation Tables for Selected Hazardous Materials in the DOT Emergency Response Guide for Hazardous Materials.
Should the reiease affect plant Safe Shutdown Areas, escalation to an Alert would be based on EAL HA3.1. Should an exp!i)sion or firn occur due to flammable gas within an affected plant area, an Alert may be appropriate bas1~d on EAL HA2.1.
IPEC Basis Refe,ence{s):
None
- -**- -* ~--**-** , ...- ..--*** - ___ ........... - --~----*- ......., ...... , ............ , .*...
IPEC NON-QUAL ITY EMERGE NCY RELATED IP-EP-AD1 3 Revision 22 PLAN PROCEDURE ADMINIST RATIVE 1--------------,----1----,-----t PROCEDU RES REFERENCE USE Page 167 of 309 Attachmen t 1 - Emergenc y Action Level Bases Category: H - Hazards Subcategory: 3 - Hazardous Gas Initiating Condition: Access to a vital area is prohibited due to release of toxic, corrosive, asphyxian t or flammable gases which jeopardize s operation of systems required to maintain safe operations or safely shutdown the reactor EAL:
HA3.1 Alert Access to any Table H-2 area is prohibited due to release of toxic, corrosive, asphyxian t or flammable gases which jeopardize s operation of systems required to maintain safe operations or safely shutdown the ieactor Table H-2 Safe Shutdown Access A ll====== --=--=== =-=-=--= ===-=== ==
- Contm: Buiidings and associated Electrical Tunnels and Battery Rooms
" Service Water Pump Structure and Valve Pits
- Vapor Containment Building
- Primary Auxiliary Building/Fan House
- Auxiliary Feed-pum Building Mode Applicability:
All NEI 99-01 Basis:
Gases in a vital area can affect the ability to safely operate or safely shutdown the reactor.
The fact that SCBA may be worn does not eliminate the need to declare the event.
Declaration should not be delayed for confirmation from atmospheric testing if the atmosphe re poses an immediate threat to life and health or an immediate threat of severe exposure to gases. This could be based upon documented analysis, indication of personal ill effects from exposure, or operating experience with the hazards.
IPEC NON-QUALITY EMERGENCY RELATED IP-EP-AD13 Revision 22 PLAN PROCEDURE ADMINISTRATIV E 1-------+------,----t--------.----i PROCEDURES REFERENCE USE Page 168 of 309 Attachment 1 - Emergency Action Level Bases If the equipment in the stated area was already inoperable, or out of service, before the event occurred, then this EAL should not be declared as it will have no adverse impact on the ability of the plant to safely operate or safely shutdown beyond that already allowed by Technical Specifications at the time of the event.
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.
An uncontrolled release of flammab!e gasses within a facility structure has the potential to affect safe operation of the plant by limiting either operator or equipment operations due to the potential for ignition and resulting aqu:oment damageipersonnel injury. Flammable gasses, such as hydrogen and acetylene, ,=-ir8 r'Jutlnaly used to maintain plant systems (hydrogen) or to repair equipment/comp onents (acetylene - usecl in welding). This EAL assumes concentrations of flammable gasses which can ignite/support combustion. Escalation of this emergency ciassification level, if appropriate, will be base-d on System Malfunctions, Fission Product Barrier Degradation or Abnormal Rad Levels/ Radioactive Effluent EALs.
IPEC Basis:
This EAL is based on gases that have entered a plant structure in concentrations that could be unsafe for plant personnel and, therefore, preclude access to equipment necessary for the safe shutdown of the plant. Table H-2 safe shutdown access areas contain systems that are required to be locally operated to establish or maintain safe shutdown (ref. 1, 2, 3, 4, 5, 6).
Post Unit 2 and Unit 3 Shutdown: HA3.1 is not applicable.
IPEC Basis Reference(s):
- 1. Unit 2 FSAR Section 1.11.2 Classification of Particular Structures and Equipment
- 2. Unit 3 FSAR Section 16.1.2 Classification of Particular Structures and Equipment
- 3. POP 2.1 Operation at Greater than 45% Power
- 4. POP 1.3 Plant Startup from Zero to 45% Power
- 5. POP 3.1 Plant Shutdown from 45% Power
- 6. POP 3.1 Plant Cool down - Hot Shutdown to Cold Shutdown
IPEC NON-QUA LITY EMERGENCY RELATED IP-EP-AD13 Revision 22 PLAN PROCEDURE ADMINISTRATIVE 1---------~---+------~
PROCEDURES REFERENCE USE Page 169 of 309 Attachment 1 - Emergency Action Level Bases Category: H - Hazards Subcategory: 4-Secu rity Initiating Condition: Confirmed security condition or threat which indicates a potential degradation in the level of safety of the plant EAL:
HU4.1 Unusual Event A security condition that does not involve a hostile action as reported by the Security Shift Supervisor OR A credible site-specific security threat notification OR A validated notification from NRC providing information of an aircraft threat _
Mode Applicability:
Ali NEI 99-01 Basis:
Timely and accurate communication between Security Shift Supervision and the Control Room is crucial for the implementation of effective Security EALs.
Security events which do not represent a potential degradation in the level of safety of the plant are reported under 10 CFR 73.71 or in some cases under 10 CFR 50.72. Security events assessed as hostile actions are classifiable under HA4.1, HS4.1 and HG4.1.
A higher initial classification could be made based upon the nature and timing of the security threat and potential consequences. The Shift Manager shall consider upgrading the emergency response status and emergency classification level in accordance with the site's Safeguards Contingency Plan and Emergency Plan.
1st Threshold Reference is made to site specific security shift supervision because these individuals are the
~
designated personnel on-site qualified and trained to confirm that a security event is occurring
IPEC NON-QUA LITY EMERGENCY RELATED IP-EP-AD13 Revision 22 PLAN PROCEDURE ADMINISTRATIVE t--------t-----,-----+--------.--~
PROCEDURES REFERENCE USE Page 170 of 309 Attachment 1 - Emergency Action Level Bases or has occurred. Training on security event classification confirmation is closely controlled due to the strict secrecy controls placed on the plant Safeguards Contingency Plan.
This threshold is based on site specific security plans. Site specific Safeguards Contingency Plans are based on guidance provided by NEI 03-12.
2 nd Threshold This threshold is included to ensure that appropriate notifications for the security threat are made in a timely manner. This includes information of a credible threat. Only the plant to which the specific threat is made need dBciare the Notification of an Unusual Event.
I The determination of "credible" is made through use of information found in the site specific Safeguards Contingency Plan.
3 rd Threshold The intent of this EAL is to ensure that notificatk,ns for the aircraft threat are made in a timely manner and that Offsite Response: Organizations and plant personnel are at a stale of heightened awareness regarding tile credible threat. it is not the intent of this EAL to replace existing non-hostile related EALs involving aircraft.
This EAL is met when a plant receives information regarding an aircraft threat from NRC.
Validation is performed by calling the NRC or by other approved methods of authentication.
Only the plant to which the specific threat is made need declare the Unusual Event.
The NRC Headquarters Operations Officer (HOO) will communicate to IPEC if the threat involves an airliner (airliner is meant to be a large aircraft with the potential for causing significant damage to the plant). The status and size of the plane may be provided by NORAD through the NRC.
Escalation to Alert emergency classification level would be via HA4.1 would be appropriate if the threat involves an airliner within 30 minutes of the plant.
IPEC NON-QU ALITY EMERG ENCY RELATED IP-EP-A D13 Revision 22 PLAN PROCEDURE ADMIN ISTRAT IVE 1----------it-----,-------~
1 PROCE DURES REFERENCE USE Page 171 of 309 Attachm ent 1 - Emergency Action Level Bases
\
IPEC Basis:
Hostile Action: An act toward a nuclear power plant or its personnel that include s the use of violent force to destroy equipment, take hostages, and/or intimidate the license e 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 disobed ience or feloniou s acts that are not part of a concerted attack on the Nuclea r Power Plant.
Non-terroris m-base d EALs should be used to address such activities (i.e., this may include violent acts between individuals in the owner controlled area).
0-AOP- SEC-1, "Response to Securit y Compromise" (ref. 2) provides guidanc e for respons e to security related events based on conti:igency events at the iPEC Plant.
IPEC Basis Reference(s):
- 1. IPEC Safegu ards Conting ency Plan
- 2. 0-AOP- SEC-1, "Response to Security Comoromise"
IPEC NON-QUAL ITY EMERGE NCY RELATED IPs-EP-AD13 Revision 22 PLAN PROCEDURE ADMINIST RATIVE 1-----------~-------j PROCEDURES REFERENCE USE Page 172 of 309 Attqchmen t 1 - Emergency Action Level Bases Category: H - Hazards Subcategory: 4 - Security Initiating Condition: Hostile action within the owner controlleg area or airborne attack threat EAL:
HA4.1 Alert A hostile action is occurring or has occurred within the Owner Controlled Area as reported by the Security Shift Superviso r OR A validated notification from NRC of an airliner attack threat within 30 minutes of the si1e Mode Applicability:
Ali NEi 99-01 Basis:
Timely and accurate communicBtion br:twean Security Shift Supervision and the Control Room is crucial for the implementation of effective Security EALs.
These EALs address the contingency for a very rapid progression of events, such as that experienced on Septembe r *11, 2001 . They are not premised solely on the potential for a radiological release. Rather the issue includes the need for rapid assistance due to the possibility for significant and indeterminate damage from additional air, land or water attack elements.
The fact that the site is under serious attack or is an identified attack target with minimal time available for further preparation or additional assistance to arrive requires a heightened state of readiness and implementation of protective measures that can be effective (such as on-site evacuation, dispersal or sheltering).
J 1st Threshold This EAL addresses the potential for a very rapid progression of events due to a hostile action.
It is not intended to address incidents that are accidental events or acts of civil disobedie nce,
IPEC NON-QUALITY EMERGENC Y RELATED IP-EP-AD13 Revision 22 PLAN PROCEDURE ADMINISTR ATIVE 1--------------,---t----~----i PROCEDURES REFERENCE USE Page 173 of 309 Attachment 1 - Emergency Action Level Bases such as small aircraft impact, hunters, or physical disputes between employees within the Owner Controlled Area. Those events are adequately addressed by other EALs.
Note that this EAL is applicable for any hostile action occurring, or that has occurred, in the Owner Controlled Area. This includes ISFSl's that may be outside the Protected Area but still within the Owner Controlled Area.
Although nuclear plant security officers are well trained and prepared to protect against hostile action, it is appropriate for Offsite Response Organizations to be notified and encouraged to begin activation (if they do not normally) to ba better prepared should it be necessary to consider further actions.
If not previously notified by the NRC that the airborne hostile action was intentional, then it would be expected, although not ce,iain, that notification by an appropriate Federal agency would follow. In this case, appropriate federal agency is intendE:d to be NORAD, FBI, FAA or NRC. However, the declaration should not be unduly de!-~yed av,,-aiting Federal notification.
2 nd Threshold This EAL addresses the immediacy of an expected threat arrival Gr impact on the site within a relatively short time.
The intent of this EAL is to ensure that notifications for the airliner attack threat are made in a timely manner and that Offsite Response Organizations and plant personnel are at a state of heightened awareness r~garding the credible threat. Airliner is meant to be a large aircraft with the potential for causing significant damage to the plant.
This EAL is met when a plant receives information regarding an airliner attack threat from NRC and the airliner is within 30 minutes of the plant. Only the plant to which the specific threat is made need declare the Alert.
The NRC Headquarters Operations Officer (HOO) will communicate to IPEC if the threat involves an airliner (airliner is meant to be a large aircraft with the potential for causing
IPEC NON-QUALITY EMERGENC Y RELATED IP-EP-AD13 Revision 22 PLAN PROCEDURE ADMINISTR ATIVE f--------+---~---1-----~----1 PROCEDUR ES REFERENCE USE Page 174 of 309 Attachment 1 - Emergency Action Level Bases significant damage to the plant). The status and size of the plane may be provided by NORAD through the NRC.
IPEC Basis:
Hostile Action: An act toward a nuclear power plant 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 corn-:'.trued to include acts of civil disobedienc e or felonious acts that are not part of a concert5d attack on the nuclear power plant. Non-terrorism-based EALs shou!d be used to address sucn activities (i.e., this may include violent acts batween individuals in th'3 owner cr.ntroiied ansa).
IPEC Basis Reference(s}:
- 1. IPEC Safeguards Contingency Pian
- 2. 0-AOP-SEC-1, "Response to Security Compromise"
IPEC NON-QUALITY EMERGENCY RELATED IP-EP-AD13 Revision 22 PLAN PROCEDURE ADMINISTRATIVE t--------t-------+----~-----i PROCEDURES REFERENCE USE Page 175 of 309 Attachment 1 - Emergency Action Level Bases Category: H - Hazards Subcategory: 4 - Security Initiating Condition: Hostile action within the Protected Area EAL:
HS4.1 Site Area Emergency A hostile action is occurring or has occurred within the Protected Area as reported by the Security Shift Supervisor Mode Applicability:
All NEI 99-01 Basis:
This condition represents an escalated threat to plant safety above that contained in the Alert in that a hostile force has progressed from the Owner Controlled Area to the Protected Area.
This EAL addresses the contingency for a very rapid progression of events, such as that experienced on September 11, 2001. It is not premised solely on the potential for a radiological release. Rather the issue include~ the need for rapid assistance due to the possibility for significant and indeterminate damage from additional air, land or water attack elements.
The fact that the site is under serious attack with minimal time available for further preparation or additional assistance to arrive requires Offsite Response Organizations readiness and
- preparation for the implementation of protective measures.
This EAL addresses the potential for a very rapid progression of events due to a hostile action.
It is not intended to address incidents that are accidental events or acts of civil disobedience, such as small aircraft impact, hunters, or physical disputes between employees within the Protected Area.
Although nuclear plant security officers are well trained and prepared to protect against hostile action, it is appropriate for Off-Site Response Organizations to be notified and encouraged to begin preparations for public protective actions (if they do not normally) to be better prepared should it be necessary to consider further actions.
IPEC NON-QUA LITY EMERGENCY* RELATED IP-EP-AD13 Revision 22 PLAN PROCEDURE ADMINISTRATIVE 1---------+-------4----~--.l PROCEDURES REFERENCE USE Page 176 of 309 Attachment 1 - Emergency Action Level Bases If not previously notified by NRC that the airborne hostile action was intentional, then it would be expected, although not certain, that notification by an appropriate Federal agency would follow. In this case, appropriate federal agency is intended to be NORAD, FBI, FAA or NRC.
However, the declaration should not be unduly delayed awaiting Federal notification.
Escalation of this emergency classification level, if appropriate, would be based on actual plant status after impact or progression of attack.
IPEC Basis:
Reference is made to the Security Shift Supervisor because this individual is the designated on-site person qualified and trained to confirm that a security event is occurring or has occurred. Training on security event classification confirmation is closely controlled due to the strict secrecy controls placed on lhe IPEC Safeguards Contingency Plan (Safeguards) (ref. 1).
IPEC Basis Reference(s}:
- 1. IPEC Safeguards ConUngency Plan
- 2. 0-AOP-SEC-1 Re~ponse to Security Compromise
IPEC NON-QUALITY EMERGENCY IP-EP-AD13 RELATED Revision 22 PLAN PROCEDURE ADMINISTRATIVE 1-------1----,----1----~------1 PROCEDURES REFERENCE USE Page 177 of 309 Attachment 1 - Emergency Action Level Bases Category: H - Hazards Subcategory: 4 - Security Initiating Condition: Hostile action resulting in loss of physical control of.the facility EAL:
HG4.1 General Emergency A hostile action has occurred such that plant personnel are unable to operate equipment required to maintain safety functions OR A hostile action has caused failure of Spent Fuel Cooling Systems and imminent fuel damage is likely Mode Applicability:
All NEI 99-01 Basis:
1st Threshold This EAL threshold encompasses conditions under which a hostile action has resulted in a loss of physical control of Vital Areas (containing vital eqL;ipment or controls of vital equipment) required to maintain safety functions and controi of that equipment cannot be transferred to and operated from another location.
These safety functions are reactivity control, RCS inventory, and secondary heat removal.
Loss of physical control of the control room or remote shutdown capability alone may not prevent the ability to maintain safety functions per se. Design of the remote shutdown capability and the location of the transfer switches should be taken into account. Primary emphasis should be placed on those components and instruments that supply protection for and information about safety functions.
If control of the plant equipment necessary to maintain safety functions can be transferred to another location, then the threshold is not met.
IPEC NON-QUAL ITY EMERGENCY RELATED IP-EP-AD13 Revision 22 PLAN PROCEDURE ADMINISTRATIVE 1---------+---,------+------,----1 PROCEDURES REFERENCE USE Page 178 of 309 Attachment 1 - Emergency Action Level Bases 2 nd Threshold This EAL threshold addresses failure of spent fuel cooling systems as a result of hostile action if imminent fuel damage is likely, such as when a freshly off-loaded reactor core is in the spent fuel pool.
IPEC Basis:
None IPEC Basis Reference(s):
- 2. 0-AOP-SEC-1 Response to Security Compromise
IPEC NON-QUAL ITY EMERGENCY RELATED IP-EP-AD13 Revision 22 PLAN PROCEDURE ADMINISTRATIVE 1-----------,-----1------.------1 PROCEDURES REFERENCE USE Page 179 of 309 Attachment 1 - Emergency Action Level Bases Category: H - Hazards Subcategory: 5 - Control Room Evacuation Initiating Condition: Control Room evacuation has been initiated EAL:
HA5.1 Alert Control Room evacuation initiated Mode Applicability:
All NEI 99-01 Basis:
With the Control Room evacuated, additional support. monitoring and direction through the Technical Support Center and/or other emergency response facility is necessary.
Inability to establish plant control from outside the control room will escalate this event to a Site Area Emergency.
IPEC Basis:
2(3]-AOP-SSD, "Control Room Inaccessibility Safe Shutdown Control", provides the instructions for tripping the unit, and maintaining RCS inventory from outside the Control Room. The Shift Manager (SM) determines if the Control Room is inoperable and requires evacuation. Control Room inhabitability may be caused by fire, dense smoke, noxious fumes, bomb threat in or adjacent to the Control Room, or other life threatening conditions.
Post Unit 2 and Unit 3 Shutdown:
HA5.1 is not applicable.
IPEC Basis Reference(s):
- 1. 2-AOP-SSD, "Control Room Inaccessibility Safe Shutdown Control"
- 2. 3-AOP-SSD, "Control Room Inaccessibility Safe Shutdown Control"
- - *.* .- __ . ~*-****'" ..~-
--.~--~--*-,. , ...*.....,.,. ,
IPEC NON-QUAL ITY EMERGE NCY RELATED IP-EP-AD 13 Revision 22 PLAN PROCEDURE ADMINIST RATIVE 1 - - - - - - - - - ~ - - - - - , - - - - - - 1 PROCEDU RES REFERENCE USE Page 180 of 309 Attachmen t 1 - Emergenc y Action Level Bases Category: H- Hazards Subcategory: 5 - Control Room Evacuation Initiating Condition: Control Room evacuation has been initiated and plant control cannot be established EAL:
HS5.1 Site Area Emergency Control Room evacuation has been initiated AND Control of the plant cannot be established within 15 min.
Mode Applicability:
All NEl 99-01 Basis:
The intent of this EAL is to capture those events wllem control of the plant cannot be reestablished in a tirnely manner. In this case, expeditious transfer of control of safety systems has not occurred (althol!gh fission produqt barrier damage may not yet be indicated).
The intent of the EAL ls to establish controi of important plant equipmen t and lmowledge of important plant parameters in a timely manner. Primary emphasis should be placed on those components and instruments that supply protection for and information about safety functions.
Typically, these safety functions are reactivity control, RCS inventory, and secondary heat removal.
The determina tion of whether or not control is established at the remote shutdown panel is based on Emergenc y Director (ED) judgment. The Emergency Director is expected to make a reasonable, informed judgment within the site specific time for transfer (15 min.) that the Shift
. Manager has control of the plant from the remote shutdown panel.
Escalation of this emergenc y classification level, if appropriate, would be by Fission Product Barrier Degradation or Abnormal Rad Levels/Radiological Effluent EALs.
IPEC NON-QUAL ITY EMERGENCY RELATED IP-EP-AD13 Revision 22 PLAN PROCEDURE ADMINISTRATIVE 1--------+---,-----+-----,--------1 PROCEDURES REFERENCE USE Page 181 of 309 Attachment 1 - Emergency Action Level Bases IPEC Basis:
2[3]-AOP-SSD, "Control Room Inaccessibility Safe Shutdown Control", provides the instructions for tripping the unit, and maintaining RCS inventory from outside the Control Room. The Shift Manager (SM) determines if the Control Room is inoperable and requires evacuation. Control Room inhabitability may be caused by fire, dense smoke, noxious fumes, bomb threat in or adjacent to the Control Room, or other life threatening conditions.
The 15 minute criteria applies from the time that the Control Room is evacuated.
Post Unit 2 and Unit 3 Shutdown:
HS5.1 is not applicable.
!PEC Basis Reference(s):
- 1. 2-AOP-SSD, "Control Room inaccessibility Safe Shutdown Control"
- 2. 3-AOP-SSD, "Con~rol Room lnc1ccessibility Safe Shutdown Cont:-ol"
IPEC NON-Q UALITY EMER GENC Y RELATED IP-EP- AD13 Revisi on 22 PLAN PROCEDURE ADMIN ISTRA TIVE 1-------1---~--1
~---1 PROC EDUR ES REFERENCE USE Page 182 of 309 Attach ment 1 - Emerg ency Action Level Bases Category: *H- Hazard s Subcategory: 6-Jud gmen t Initiating Condition: Other conditi ons exist that in the judgm ent of the Emerg ency Directo r
warran t declar ation of a UE EAL:
HU6.1 Unusual Event Other conditi ons exist that in the judgm ent oi the Emerg ency Directo r indicat e that events are in progre ss or have occurr ed which indicate a potential degrad ation of the level of safety of the plant or indicat e a securit y threat to facility protection has been initiated. No releases of radioa ctive materi al requiring offsite respon se or monito ring are expect ed unless further degrad ation of safety system s occurs Mode Applicability:
All NEI 99-01 Basis:
This EAL addres ses unanti cipated conditions not addrE1ssed explicitly elsewh ere but that warran t declar ation of 2,n emerg ency becau se conditions exist which are believe d by the Emerg ency Directo r to fall under the Unusu al Event emerg ency classif ication level.
IPEC Basis:
The Emerg ency Directo r is the design ated onsite individual having the respon sibility and author ity for implem enting the IPEC Emerg ency Plan. The Shift Manag er (SM) initially acts in the capaci ty of the Emerg ency Directo r and takes actions as- outline d in the Emerg ency Plan implem enting proced ures. If required by the emerg ency classification or if deeme d approp riate by the Emerg ency Director, emerg ency response person nel are notified and instruc ted to report to their emerg ency respon se locations. In this manner, the individ ual usually in charge of activities in the Contro l Room is responsible for initiating the necess ary emerg ency respon se, but Plant Manag ement is expect ed to manag e the emerg ency respon se as soon as availab le to do so in anticip ation of the possible wide-ra nging responsibilities associ ated with manag ing a major emerg ency (ref. 1 ).
IPEC NON-QU ALITY EMERGENCY RELATED IP-EP-AD13 Revision 22 PLAN PROCEDURE ADMINISTRATIVE r--------t---------,----t------,--
1 PROCEDURES REFERENCE USE Page 183 of 309 Attachment 1 - Emergency Action Level Bases IPEC Basis Reference(s):
- 1. IPEC Emergency Plan Part 2 Section B, Station Emergency Response Organiz ation
IPEC NON-QU ALITY EMERG ENCY RELATED IP-EP-A D13 Revision 22 PLAN PROCEDURE ADMIN ISTRAT IVE 1--------1-----~---1
i PROCE DURES REFERENCE USE Page 184 of 309 Attachm ent 1 - Emerge ncy Action Level Bases Category: H- Hazard s Subcategory: 6-Judg ment Initiating Condition: Other Conditions exist that in the judgme nt of the Emerge ncy Directo r warran t declaration of an Alert EAL:
HA6.1 Alert Other conditions exist that in the judgme nt of the Emergency Directo r indicate that events are in progres s or have occurred which involve EITHER:
An actual or potential substantial degradation of the leve! of safety of the plant OR A security event that involves probable life threatening risk to site personnel or damag e to site equipm ent because of l,ostiie action Any release s are expected to be limited to smail fractions of the EPA Protective Action Guideli ne exposu re !eveis beyond the site boimdary.
Mode Applicability:
All NEI 99-01 Basis:
This EAL address es unanticipated conditions not addressed explicitly elsewh ere but that warran t declaration of an emerge ncy because conditions exist which are believe d by the Emerge ncy Directo r to fall under the Alert emergency classification level.
IPEC Basis:
The Emerge ncy Director is the designated onsite individual having the respons /'
ibility and authori ty for implementing the IPEC Emergency Plan. The Shift Manag er (SM) initially acts in the capacit y of the Emerge ncy Director and takes actions as outlined in the Emerge ncy Plan implem enting procedures. If required by the emergency classification or if deemed approp riate by the Emerge ncy Director, emerge ncy response personnel are notified and instruct ed to report to their emerge ncy response locations. In this manner, the individual usually in charge of activitie s in the Control Room is responsible for initiating the necess ary emerge ncy response,
\
IPEC NON-QUA LITY EMERGENCY RELATED IP-EP-AD13 Revision 22 PLAN PROCEDURE ADMINISTRATIVE 1--- ---- ---- ---1 ---- -~~
PROCEDURES REFERENCE USE Page 185 of 309 Attachment 1 - Emergency Action Level Bases but Plant Management is expected to manage the emergency response as soon as available to do so in anticipation of the possible wide-ranging responsibilities associated with managing a major emergency (ref.1 ).
IPEC Basis Reference(s):
- 1. IPEC Emergency Plan Part 2 Section B, Station Emergency Response, Organization
IPEC N0N-OUALITY EMERGENC Y RELATED IP-EP-AD13 Revision 22 PLAN PROCEDURE I ADMINISTR ATIVE i - - - - - - - - - + - - - - . - - - - - - + - - - - - , - - - - - - 1 PROCEDUR ES REFERENCE USE Page 186 of 309 Attachment 1 - Emergency Action Level Bases Category: H- Hazards Subcategory: 6-Judgmen t Initiating Condition: Other conditions exist that in the judgment of the Emergency Director warrant declaration of S,ite Area Emergency EAL:
HS6.1 Site Area Emergency Other conditions exist that in the judgment of the Emergency Director indicate that events are in progress or have occurred which involve EITHER:
Actual or likely major failures n.f 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 cou!d lead to the iikely failure of or; 2) that prevent effective access to equipment needed for tile protect!Gn of the public Any releases arn not expected to result in exposure levels which exceed EPA Protective Action Guideline exposure \evels (1 Rem TEDE and 5 Rem thyroid COE) beyond the site j bound_a_ry_ _ __
Mode Applicability:
All NEI 99-01 Basis:
This EAL 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 class description for Site Area Emergency.
IPEC NON-QUA LITY EMERG ENCY RELATED IP-EP-AD13 Revision 22 PLAN PROCEDURE ADMINISTRATIVE i - - - - - - - - - + - - - ~ - - - - - ~ - - - i PROCEDURES REFERENCE USE Page 187 of 309 Attachment 1 - Emergency Action Level Bases IPEC Basis:
The Emergency Director is the designated onsite individual having the responsibility and authority for implementing the IPEC Emergency Plan. The Shift Manager (SM) initially acts in the capacity of the Emergen cy Director and takes actions as outlined in the Emergen cy Plan implementing procedures. If required by the emergency classification or if deemed appropriate by the Emergency Director, emergency response personnel are notified and instructed to report to their emergency response locations. In this manner, the individual usually in charge of activities in the Control Room is responsible for initiating the necessary emergency response, but Plant Manage ment is expected to manage the emergency response as soon as available to do so in anticipation of the possible wide-ranging responsibilities associated with managin g a major emergency (ref. 1).
IPEC Basis Referenc~(s}:
- 1. IPEC Emergency Plan Part 2 Section 8, Station Emergency Response, Organization
IPEC N0N-OUALITY EMERGENC Y RELATED IP-EP-AD13 Revision 22 PLAN PROCEDURE ADMINISTR ATIVE i---------+---r-----+---~----1 PROCEDUR ES REFERENCE USE Page 188 of 309 Attachment 1 - Emergency Action Level Bases Category: H - Hazards Subcategory: 6 -Judgment Initiating Condition: Other conditions existing that in the judgment of the Emergency Director warrant declaration of General Emergency EAL:
HG6.1 General Emergency Other conditions exist that in the judgment of the Emergency Director indicate that events are in progress or have occurred which involve EITHER:
Actual or imminent substantial core degradation or melting with potential for loss of containment integrity OR Hostile action that resuits !n an actual loss of physical control of the facility Releases can be reasonably expected to exceed EPA Protective Action Guideline exposure levels (1 Rem TEDE and 5 Rem thyroid GDE) beyond the site boundary Mode Applicability:
All NEI 99 .. 01 Basis:
This EAL 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 General Emergency.
IPEC Basis:
The Emergency Director is the designated onsite individual having the responsibility and authority for implementing the IPEC Emergency Plan. The Shift Manager (SM) initially acts in the capacity of the Emergency Director and takes actions as outlined in the Emergency Plan implementing procedures. If required by the emergency classification or if deemed appropriate I
by the Emergency Director, emergency response personnel are notified and instructed to report to their emergency response locations. In this manner, the individual usually in charge of
IPEC NON-QUALITY EMERGENCY RELATED IP-EP-AD13 Revision 22 PLAN PROCEDURE ADMINISTRATIVE - - - - - - - + - - - . - - - - - - - - + - - ~ - ~
PROCEDURES REFERENCE USE Page 189 of 309 Attachment 1 - Emergency Action Level Bases activities in the Control Room is responsible for initiating the necessary emergency response, but Plant Management is expected to manage the emergency response as soon as available to do so in anticipation of the possible wide-ranging responsibilities associated with managing a major emergency (ref. 1).
Releases can reasonably be expected to exceed EPA PAG plume exposure levels outside the Site Boundary.
IPEC Basis Reference(s):
- 1. IPEC Emergency Plan Part 2 Section B, Station Emergency Response, Organization
,I
IPEC NON-QUAL ITY EMERGENCY RELATED IP-EP-AD13 Revision 22 PLAN PROCEDURE ADMINISTRATIVE ------ -+---- ,----- +----- --,--- -
PROCEDURES REFERENCE USE Page 190 of 309 Attachment 1 - Emergency Action Level Bases NOTE: Post Unit 2 and Unit 3 Shutdown, Hot Conditions are not applicable to either Unit Category S - System Malfunction EAL Group: Hot Conditions (RCS temperature > 200°F); EALs in this category are applicable only in one or more hot operating modes.
Numerous system-related equipment failure events that warrant emergency classification have
)
been identified in this category. They may pose actual or potential threats to plant safety.
The events of this category pertain to the following subcategories:
- 1. Loss of AC Power Loss of emergency AC electrical powe; can compromise plant safety system operability including decay heat removal and emergency ccre cooling systems which may be necessary to ensure fission product barrier integrity. This category includes* loss of onsite and offsite sources for 480 VAC safeguards buseg,
- 2. A TWS / Criticality Events related to failure of the Reactor Protection System (RPS) to initiate and complete reactor trips. In the plant licensing basis, postulated failures of tl1e RPS to complete a .
reactor trip comprise a specific set of analyzed events referred to as Anticipated Transient Without Scram (ATWS) events. For EAL classification however, A TWS is intended to mean any trip failure event that does not achieve reactor shutdown. If RPS actuation fails to assure reactor shutdown, positive control of reactivity is at risk and could cause a threat to Fuel Clad, RCS and Containment integrity. Inadvertent criticalities pose potential personnel safety hazards as well being indicative of losses of reactivity control.
- 3. Inability to Reach Shutdown Conditions One EAL falls into this subcategory. It is related to the failure of the plant to be brought to the required plant operating condition required by technical specifications if a limiting condition for operation (LCO) is not met.
IPEC NON-QU ALITY EMERGENCY RELATED IP-EP-AD13 Revision 22 PLAN PROCEDURE ADMINISTRATIVE 1----------+----.---+-----,--~
PROCEDURES REFERENCE USE Page 191 of 309 Attachment 1 - Emergency Action Level Bases
- 4. Instrumentation / Communications Certain events that degrade plant operato r ability to effectively assess plant conditio ns within the plant warrant emergency classification. Loss of annunciators or indicato rs is in this subcategory.
Certain events that degrade plant operato r ability to effectively communicate with essential personnel within or external to the plant warrant emergency classification.
- 5. Fuel Clad Degradation During normal operation, reactor coolant fission product activity is very low. Small concentrations of fission products in the coolant are primarily from the fission of tramp uranium in the fuel clad or minor perforations in the clad itself. Any s,gnificant increas e from these base-line leveis (2% - 5% clad failun::s) ;B indicative of fuel failures and is covered under the Fission Product Barrier Degradation category. However, iesser amoun ts of clad damage may result in coolant activity exceeding Technical Specification limits. These fission products will be circulated with tile reactor coolant and can be detected by coolant sampling.
- 6. RCS Leakage The Reactor Vessel provides a volume for the coolant that covers the reactor core.
The Reactor Vessel and associated pressure piping (reactor coolant system) togethe r provide a barrier to limit the release of radioactive material should the reactor fuel clad integrity fail.
Excessive RCS leakage greater than Technical Specification limits are utilized to indicate potential pipe cracks that may propagate to an extent threatening fuel clad, RCS and Containment integrity.
- 7. Loss of DC Power Loss of vital 125 VDC DC electrical power can compromise plant safety system operab ility including decay heat removal and emergency core cooling systems which may be necessary to ensure fission product barrier integrity.
IPEC NON-QUAL ITY EMERGE NCY 'RELATED IP-EP-AD1 3 Revision 22 PLAN PROCEDURE ADMINIST RATIVE i---------+------.-----------,----1 PROCEDU RES REFERENCE USE Page 192 of 309 Attachmen t 1 - Emergency Action Level Bases Category: S - System Malfunction Subcategory: 1 - Loss of Power Initiating Condition: Loss of all offsite AC power to emergenc y buses for 15 minutes or longer EAL:
SU1.1 Unusual Event Loss of all offsite AC power (Table S-1) to 480 V safeguards buses (5A, 2A/3A, 6A) for
.::: 15 min. (Note 3)
Note 3: The Emergency Director should not wait unU: the ::ippiicable lime has elapsed, but sh2uld declare the event as soon as it is determined that the cor,diriori wlll lilmly p;..ceetl the ?.pplicable time.
jr- . - --
IL I
Table S*-1
.Safeguard Bus AC Power Sources
-*' I I' Onslfa Offsite
-- - .. -- JI I N
I
- 4BO V EDG 21 7
- Unit Auxiliary transforme r*
Station Auxiliary transformer+-
C 480 V EOG 22 480 V EOG 23 I* 13.8 f<:V gas turbine auto
- , transforme r*
- Appendix R Diesel
- With 86P or 86BU tripped, all offsite power supplies must be considered as one power supply.
- Unit Auxiliary transforme r
- 480V EOG 31 M
- Station Auxiliary transforme r
~
- 480V EOG 32 C
- 13W92 feeder
- >
- 480V EOG 33
- Appendix R Diesel
- 13W93 feeder Mode Applicability:
1 - Power Operations, 2 - Startup, 3 - Hot Standby, 4 - Hot Shutdown
IPEC NON-QUA LITY EMERG ENCY
- RELATED IP-EP-A D13 Revision 22 PLAN PROCEDURE ADMINIS TRATIVE 1---------+---.------+---~----1 PROCED URES REFERENCE USE Page 193 of 309 Attachm ent 1 - Emergency Action Level Bases NEI 99-01 Basis:
Prolonged loss of off-site AC power reduces required redunda ncy and potentially degrade s the level of safety of the plant by rendering the plant more vulnerab le to a complete loss of AC power to emergen cy buses.
Fifteen minutes was selected as a threshold to exclude transient or moment ary losses of off-site power.
IPEC Basis:
The 15-minu te interval was selected as a threshold to e)(clude transient or momenta ry power losses. If neither emergen cy bus is energized by an offsite source within 15 minutes, an Unusual Event is declared under this EAL.
Unit2 A single-line diagram showing the connections of trie main generato r to the power system grid and standby power source is shown in Plant Drawing 250907 [Formerl y UFSAR Figure 8.2-2]
- (ref. 1 ).
Three external sources of standby power a:-e available to Indian Point Unit 2. They are the 138- kV tie from the Buchanan 345-kV substation, the 138-kV Buchana n-Millwo od ties, and the gas turbine generators. Upon los~ of 345/138 -kV autotransformer supply at Buchanan, two 138-kV ties are designed to provide additional auxiliary power from the Millwood 138-kV substation. A further source of reliable auxiliary power, independ ent of transmission system connections, is provided by the Appendix R Diesel Generator. The Appendi x R Diesel Generat or can provide an alternate backup power source in case of loss of onsite emergen cy power and concurrent loss of offsite power as well as required auxiliary power for alternate safe shutdow n systems equipment.
The plant turbine generato r is a main source of 6.9-kV auxiliary electrical power during "online" plant operation. Power to the auxiliaries on 6.9-kV Buses 1 thru 4 is supplied by a 22/6.9-k V unit auxiliary transform er that is connected to the main generator. Power to the auxiliaries on
IPEC NON-QU ALITY EMERGENCY - RELATED* IP-EP-AD13 Revision 22 PLAN PROCEDURE ADMINISTRATIVE r - - - - - - - - ; - - - - - . - - - - - - - - , - - -
PROCEDURES REFERENCE USE Page 194 of 309 Attachment 1 - Emergen~y Action Level Bases 6.9-kV buses 5 and 6 during "on line" plant operation is supplied by a 13.8/6. 9-kV station auxiliary transfo rmer connected to an offsite supply. Power to the 480-V buses is supplied from four 6900/480-V station service transformers.
The 6.9-kV system is arranged as six buses. During normal plant operation, two buses (5 and
- 6) receive power from the 138-kV system by bus main breakers and the 138/6.9
-kV station auxiliary transformer, while buses 1, 2, 3, and 4 receive power from the main genera tor by bus main breakers and the unit auxiliary transformer. The 480-V switchgear buses are supplied from the 6.9-kV buses as follows: 2A from 2, 3A from 3, 5A from 5, and 6A from 6 (buses 2A and 3A are within the same power train). Tie breakers are provided between 480-V Switchg ear buses 2A and 3A, 2A and 5A, and 3A and 6A. {ref. 2, 3, 4)
Unit3 A single-line diagram, :;hewing the connections of the main generator to the power system grid and to standby power source is shown on Plant Drn,Ning 9321-F-33853 [Forme rly Figure 8.2-1]
(ref. 5).
Offsite (standby) power is supplied from Buchanan Substation by 138 kV and 345 kV feeders, and two underground 13.8 kV feeders. In addition, there is an Appendix R Diesel Generator.
The 13.8 kV feeders are connected to the 6.9 kV buses through autotransformers.
The 480 volt engineered safety feature buses are connected to the 6.9 kV buses through station auxiliary transformers.
The 6900 volt system is divided into seven buses. These buses supply 6900 volt auxiliaries directly and 480 volt auxiliaries via the station service transformers. Two buses, numbers 5 and 6, are connected to the 138 kV system via bus main breakers and the Station Auxiliary Transformer. An alternate connection is available to the Appendix R Diesel Genera tor and/or the 13.8 kV off-site power network. Buses No. 1, 2, 3, 'and 4 are connected to the generator main breakers and the Unit Auxiliary Transformer. Buses No. 1 and 2 can be tied to Bus No. 5 and Buses No. 3 and 4 can be tied to Bus No. 6 via bus tie breakers to provide auxiliar f y power during unit down time. The 480 volt system consists of seven buses, each supplie d from a
IPEC NON-QUA LITY EMERGENCY RELATED IP-EP-AD13 Revision 22 PLAN PROCEDURE ADMINISTRATIVE i--------,---1---.....-----+-----,---
-1 PROCEDURES REFERENCE USE Page 195 of 309 Attachment 1 - Emergency Action Level Bases 6900 volt bus via a station service transformer. Four of these Buses, No. 2A, 3A, 5A and 6A, supplied from Buses No. 2, 3, 5, and 6 respectively, comprise the safety related 480 volt system. (ref. 2, 3)
IPEC Basis Reference(s):
- 1. Plant Drawing 250907 [Formerly UFSAR Figure 8.2-2]
- 2. FSAR 8.2
- 3. 2-ECA-0.0, "Loss of All AC Power"
- 4. 3-ECA-0.0, "Loss of All AC Power
- 5. Plant Drawing 9321-F-33853 [Formerly Figure 8.2-1]
IPEC NON-QUA LITY EMERGENCY RELATED IP-EP-AD13 Revision 22 PLAN PROCEDURE ADMINISTRATIVE t - - - - - - - - + - - - - , - - - - + - - - - - - - . - - - - j PROCEDURES REFERENCE USE Page 196 of 309 Attachment 1 - Emergency Action Level Bases Category: S - System Malfunction Subcategory: 1 - Loss of Power Initiating Condition: AC power capability to safeguards buses reduced to a single power source for 15 minutes or longer such that any additional single failure would result in loss of all AC power to safeguard buses EAL:
SA1.1 Alert AC power capability to 480 V safeguards buses (5A, 2A/3A, 6A) reduced to a single power r source (Table S-1) for> 15 min. (Note 3) such that any additional single failure would result in loss of all AC power to safeguard buses Note 3: The Emergency Director should not wait until the applicable time has elapsed, but should declare the event as soon as it is determined that the condition will likely exceed the applicable time.
Table S-1 Safeguard Bus AC Power Sources Onsite Offsite
- Unit Auxiliary transformer*
- 480 V EOG 21
- Station Auxiliary N transformer*
- !
- !
- 480 V EOG 22 C:
- 13.8 KV gas turbine auto
- 480 V EOG 23
=> transformer*
- Appendix R Diesel *
- With 86P or 86BU tripped, all offsite power supplies must be considered as one power supply.
- Unit Auxiliary transformer
(")
- 480V EOG 31
- Station Auxiliary transformer
- !
- !
- 480V EOG 32 C:
- 480V EOG 33
- 13W92 feeder
=>
- 13W93 feeder
- Appendix R Diesel Mode Applicability:
1 - Power Operations, 2 - Startup, 3- Hot Standby, 4 - Hot Shutdown
IPEC NON-QUA LITY EMERG ENCY RELATED IP-EP-AD13 Revision 22 PLAN PROCEDURE ADMINISTRATIVE r--------r-----,----t-----r------1 PROCEDURES REFERENCE USE Page 197 of 309 Attachment 1 - Emergency Action Level Bases NEI 99-01 Basis:
This EAL is intended to provide an escalation from EAL SU.1.1 The condition indicated by this EAL is the degradation of the off-site and on-site AC power systems such that any additional single failure would result in a loss of all AC power to the safeguards buses. This condition could occur due to a loss of off-site power with a concurre nt failure of two emergency generators to supply power to their emergency buses. Another related condition could be the loss of all off-site power and loss of on-site emergency generators with only one train of emergency buses being back fed from the unit main generator, or the loss of on-site emergency generators with only one train of emergency buses being back-fed from off-site power. The subsequent loss of this single power source would escalate the event to a Site Area Emergency in accordance with SS1 .1.
Fifteen minutes was selected as a threshold to exclude transient or momentary losses of power.
IPEC Basis:
The 15-minute interval was selected as a threshold to exclude transient or momentary power losses. If the capability of a second source of emergency bus power is not restored within 15 minutes, an Alert is declared under this EAL The condition indicated by this EAL would include the degradation of the offsite power with a concurrent failure of all but one emergency generator to supply power to its emergency bus.
Another related condition could be the loss of all offsite power and loss of onsite emergen cy diesels with only one train of emergency buses being fed from the unit main generator, or the loss of onsite emergency diesels with only one train of emergen cy buses being fed from offsite power. The subsequent loss of this single power source would result in a loss of all AC to the 480 V safeguards buses.
Indian Point Unit 2 has a blackout/unit trip/no safety injection logic that opens all the normal supply breakers and locks them out from re-closure. The blackout is sensed by under voltage on either 480V Bus 5A or 6A. The unit trip is sensed by lockout relays 86P and 86BU.
IPEC NON-QUAL ITY EMERGENCY RELATED IP-EP-AD13 Revision 22 PLAN PROCEDURE ADMINISTRATIVE ----- -+-- ---,- --+- ---~ ~
PROCEDURES REFERENCE USE Page 198 of 309 Attachment 1 - Emergency Action Level Bases Therefore, with 86P or 86BU relays tripped, under voltage on Bus 5A or 6A (a single failure) would cause a loss of all offsite power to the "essential buses." For the condition where all emergency diesel generators are inoperable when the unit is shut down and relays 86P and 86BU are not reset, a loss of power to either 480V Bus SA or 480V Bus 6A will cause the normal supply breakers to all 480V buses to open.
This hot condition EAL is equivalent to the cold condition loss of AC power EAL CU1 .1.
IPEC Basis Reference(s):
- 1. FSAR Section 8.2
- 2. 2-ECA-0.0, "Loss of All AC Power"
- 3. 3-ECA-0.0, "Loss of All AC Power
IPEC NON-QUAL ITY EMERGE NCY RELATED IP-EP-AD 13 Revision 22 PLAN PROCEDURE ADMINIST RATIVE t - - - - - - - - - + - - - - - - - ~ - -
PROCEDU RES REFERENCE USE Page 199 of 309 Attachmen t 1 - Emergenc y Action Level Bases Category: S - System Malfunctio n Subcategory: 1 - Loss of Power Initiating Condition: Loss of all offsite power and loss of all onsite AC power to safeguard s buses for 15 minutes or longer EAL:
SS1.1 Site Area Emergency Loss of all offsite and all onsite AC power (Table S-1) to 480 V safeguard s buses (5A, 2A/3A, 6A) for=. 15 min. (Note 3)
Note 3: The Emergency Director should not wait until the applicable time has elapsed, but should declare the event as soon as it is determined that the condition will iikely exceed the applicable t'lma.
- Table S-1 Safeguard Bus AC Power Sources
___ I Onsite r*IL --
Offsite I
- 480 V EOG 21 1-*j ~
Unit Auxiliary transforme r*
Station Auxiliary N
"i: !
- J '
480 V EOG 480 V EOG 22 23
'I I
transforme r*
13.8 i<V gas turbine auto transforme r*
- Appendix R Diesel *
- With 86P or 86BU tripped, all offsite power supplies must be considered as one power supply.
- 480V EOG 31
- Unit Auxiliary transforme r M
- 480V EOG 32
- Station Auxiliary transforme r
- 13W92 feeder C:
- J
- 480V EOG 33
- Appendix R Diesel
- 13W93 feeder Mode Applicability:
1 - Power Operation s, 2 - Startup, 3 - Hot Standby, 4- Hot Shutdown
IPEC NON-QUA LITY EMERGENCY RELATED IP-EP-AD13 Revision 22 PLAN PROCEDURE ADMINISTRATIVE 1 - - - - - - - - - ~ - - + - - - ~ - - - - 1 PROCEDURES REFERENCE USE Page 200 of 309 Attachment 1 - Emergency Action Level Bases NEI 99-01 Basis:
Loss of all AC power to safeguards buses compromises all plant safety systems requiring electric power including RHR, ECCS, Containment Heat Removal and the Ultimate Heat Sink.
Prolonged loss of all AC power to safeguards buses will lead to loss of Fuel Clad, RCS, and Containment, thus this event can escalate to a General Emergency.
Fifteen minutes was selected as a threshold to exclude transient or momentary losses of off-site power.
Escalatio~ to General Emergency is via Fission Product Barrier Degradation or EAL SG1 .1.
IPEC Basis:
This EAL is the hot condition equivalent of the cold condition loss of all AC power EAL CA 1. 1.
When in Cold Shutdown, Refuel, er Defueled mode, the event can be dassified as an Alert because of the significantiy reduced decay heat, lower temperature and pressure, increasing the time to restore one of the emergency buse5, relative to that existing when in hot conditions.
Unit2 A single-line diagram showing the connecticns of the main generator to the power system grid and standby power source is shown in Plant Drawing 250_907 [Formerly UFSAR Figure 8.2-2]
(ref. 1 ).
Three external sources of standby power are available to Indian Point Unit 2. They are the 138- kV tie from the Buchanan 345-kV substation, the 138-kV Buchanan-Millwood ties, and the gas turbine generators. Upon loss of 345/138-kV autotransformer supply at Buchanan, two 138-kV ties are designed to provide additional auxiliary power from the Millwood 138-kV substation. A further source of reliable auxiliary power, independent of transmission system connections, is provided by the Appendix R Diesel Generator. The Appendix R Diesel Generator can provide an alternate backup power source in case of loss of onsite emergency power and concurrent loss of offsite power as well as required auxiliary power for alternate safe shutdown systems equipment.
IPEC NON-QU ALITY EMERG ENCY RELATED IP-EP-A D13 Revisio n 22 PLAN PROCEDURE ADMIN ISTRAT IVE 1 - - - - - - - + - - - , - - - - - - ~ - - - 1 PROCE DURES REFERENCE USE Page 201 of 309 Attachm ent 1 - Emerge ncy Action Level Bases The plant turbine genera tor is a main source of 6.9-kV auxiliar y electrical power during "online "
plant operatio n. Power to the auxiliar ies on 6.9-kV Buses 1 thru 4 is supplie d by a 22/6.9- kV unit auxiliar y transfo rmer that is connec ted to the main genera tor. Power to the auxiliar ies on
.6.9-kV buses 5 and 6 during "on line" plant operation is supplie d by a 13.8/6.
9-kV station auxiliar y transfo rmer connec ted to an offsite supply. Power to the 480-V buses is supplie d from four 6900/4 80-V station service transformers.
The 6.9-kV system is arrange d as six buses. During normal plant operatio n, two buses (5 and
- 6) receive power from the 138-kV system by bus main breaker s and the 138/6.9
-kV station auxiliar y transfor mer, while buses 1, 2, 3, and 4 receive power from the main genera tor by bus main breaker s and the unit auxiliar y transformer. The 480-V switchg ear buses are supplie d from the 6.9-kV buses as foHows: 2A from 2, 3A from 3, SA from 5, and 6A from 6 (buses 2A and 3A are within the s21me pOW(=f train). Tie brea!<ers are provide d ben,vean 480-V Switchg ear buses 2A and 3A, 2A and 5A, and 3A and 6A One emerge ncy diesel-g enerato r provide s emerge ncy power to bu;.; 5A, one to 6A, and the other t'No buses 2A and 3A.
Each emerge ncy diesel genera tor will automa tically stc~rt on a safety injection signal or upon under voltage on any 480-\! switchg ear bus. (ref. 2, 3, 4)
Unit 3 A single-l ine diagram , showin g the connections of the main genera tor to the power system grid and to standby power source is shown on Plant Drawing 9321-F -33853 [Forme rly Figure 8.2-1]
(ref. 5).
Offsite (standb y) power is supplie d from Buchanan Substat ion by 138 kV and 345 kV feeders ,
and two undergr ound 13.8 kV feeders. In addition, there is 1-25.4 MW and 1-16.9 MW combus tion turbine genera tors at Buchan an substation connec ted to the 13.8 kV feeders and a 21 MW combus tion turbine genera tor located at the Indian Point Site. The 13.8 kV feeders are connec ted to the 6.9 kV buses through autotransformers. The 480 volt enginee red safety feature buses are connec ted to the 6.9 kV buses through station auxiliary transfor mers.
IPEC NON-QUALITY EMERGE NCY RELATED IP-EP-AD 13 Revision 22 PLAN PROCEDURE ADMINISTRATIVE 1 - - - - - - - - - - , - - - - - - - - - - 1 PROCEDURES REFERENCE USE . Page 202 of 309 Attachmen t 1 - Emergenc y Action Level Bases The 6900 volt system *Js divided into seven buses. These buses supply 6900 volt auxiliaries
\
directly and 480 volt auxiliaries via the station service transforme rs. Two buses, numbers 5 and 6, are connected to the 138 kV system via bus main breakers and the Station Auxiliary Transform er. An altern~te connection is available to the Appendix R Diesel Generator and/or the 13.8 kV off-site power network. Buses No. 1, 2, 3, and 4 are connected to the generator main breakers and the Unit Auxiliary Transformer. Buses No. 1 and 2 can be tied to Bus No. 5 and Buses No. 3 and 4 can be tied to Bus No. 6 via bus tie breakers to provide auxiliary po\},/er during unit down time. The 480 volt system consists of seven buses, each supplied from a 6900 volt bus via a station service transformer. Four of these Buses, No. 2A, 3A, 5A and 6A, supplied from Buses No. 2, 3, 5, and 6 respectively, comprise the safety related 480 volt system. One emergenc y die~:e!-generator sat is c,Jnnected to bus No. 5A, one to 6A and the third to the combinatio n of Sus No. 2A and Su8 3A. Each di0sel generator is automatlcDlly started upon under-volt age on its associated 430 vG!t bus. (ref. 2, 3. 4)
IPEC Basis Refsrence {s}:
- 1. Plant Dravving 250907 [Formerly UFSAR Figurn 8.2-2]
- 2. FSAR8.2
- 3. 2-ECA-0.0 Loss of All P,C Power
- 4. 3-ECA-0.0 , "loss of Ali AC Power
- 5. Plant Drawing 9321-F-33 853 [Formerly Figure 8.2-1]
IPEC NON-Q UALITY EMERGENCY RELATED IP-EP-AD13 Revision 22 PLAN PROCEDURE ADMINISTRATIVE 1--- ---- - --~ - ---- ~__
PROCEDURES REFERENCE USE Page 203 of 309 Attachment 1 - Emergency Action Level Bases Category: S -Syste m Malfunction Subcategory: 1 - Loss of Power Initiating Condition: Prolonged loss of all offsite and all onsite AC power to safeguards buses EAL:
I I
SG1 .1 General Emergency Loss of all offsite and all onsite AC power (Table S-1) to 480 V safeguards buses {SA, 2A/3A, 6A)
AND EITHER:
Restoration of at least one safeguards bus within 4 hours4.62963e-5 days <br />0.00111 hours <br />6.613757e-6 weeks <br />1.522e-6 months <br /> is not likely OR Actual or imminent conditions requiring entry into ORANGE or RED path on F-0.2, "CORE COOLING" I Table S-1 Safeguard Bus AC Power Sources
- ---- - ~
I -
Onsite Offsite I
- Unit Auxiliary transfo rme~
- 480 V EOG 21
- Station Auxii!ary IC'II transformer*
I~
- 480 V EOG 22 C:
- 13.8 KV gas turbine auto
- ,
- 480 V EDG 23 transformer* i
- Appendix R Diesel
- With 86P or 86BU tripped, all offsite power supplies must be considered as one power supply.
- 480V EOG 31
- Unit Auxiliary transformer CW')
....
- 480V EOG 32
- Station Auxiliary transformer
- 2
- 480V EOG 33
- 13W92 feeder
- Appendix R Diesel
- 13W93 feeder Mode Applicability:
1 - Power Operations, 2 - Startup, 3 - Hot Standby, 4 - Hot Shutdown
IPEC NON-QU ALITY EMERG ENCY RELATED IP-EP-A D13 Revision 22 PLAN PROCEDURE ADMIN ISTRAT IVE 1----------1-------,-----+---~-
--1 PROCE DURES REFERENCE USE Page 204 of 309 Attachm ent 1 - Emerge ncy Action Level Bases NEI 99-01 Basis:
Loss of all AC power to safegua rds buses compromises all plant safety system s requiring electric power including RHR, ECCS, Contain ment Heat Remov al and the Ultimat e Heat Sink.
Prolonged loss of all AC power to safegua rds buses will lead to loss of fuel clad, RCS, and contain ment, thus warranting declara tion of a General Emerge ncy.
The four hours to restore AC power is based on a site blackou t coping analysi s perform ed in conform ance with 10 CFR 50.63 and Regulatory Guide 1.155, "Station Blackou t" Althoug h this EAL may be viewed as redund ant to the Fit,sion Produc t Barrier Degrad ation EALs, its inclusion is necess ary to better assum timely recognition and emerge ncy respons e.
This EAL is specified to assure that in the unlikely event of a prolong ed loss of all safegua rds bus AC powGr, timely recognit!on of tile ssrious ness of the event occ!Jrs and that declara tion of a General Emerge ncy occurs as early ~s \3 appropriate, based on a reasona ble assess ment of the event trajectory.
The likelihood of restoring at least one safeguards bus should be based on a realistic apprais al of the situation since a delay in an upgrade decision based on only a chance of mitigating the event could result in a loss of valuable time in preparing and implem enting public protecti ve actions.
In addition, under these conditions, fission product barrier monitoring capabil ity may be degrad ed.
Althoug h it may be difficult to predict when power can be restored, it is necess ary to give the Emerge ncy Directo r a reasonable idea of how quickly (s)he may need to declare a Genera l Emerge ncy based on two major considerations:
- 1. Are there any present indications that core cooling is already degrad ed to the point that loss or potential loss of Fission Produc t Barriers is imminent?
IPEC NON-QUAL ITY EMERGENCY RELATED IP-EP-AD13 Revision 22 PLAN PROCEDURE ADMINISTRATIVE i-------i-------r---+----,-----1 PROCEDURES REFERENCE USE Page 205 of 309 Attachment 1 - Emergency Action Level Bases
- 2. If there are no present indications of such core cooling degradation, how likely is it that power can be restored in time to assure that a loss of two barriers with a potential loss of the third barrier can be prevented?
Thus, indication of continuing core cooling degradation must be based on Fission Product Barrier monitoring with particular emphasis on Emergency Director judgment as it relates to imminent loss or potential loss of fission product barriers and degraded ability to monitor fission product barriers.
IPEC Basis:
Unit2 A single-line diagram showing the connections of the main generator to the power system grid and standby power source is shown in Plant Drawing 250907 [Formerly UFSAR Figure 8.2-2]
(ref. 1).
Three external sources of standby power are available to Indian Point Unit 2. They are the 138- kV tie from the Buchanan 345-kV substation, the 138-kV Buchanan-Millwood ties, and the gas turbine generators. Upon loss of 345/138-kV autotransformer supply at Buchanan, two 138-kV ties are designed to provide additional auxiliary power from the Millwood 138-kV substation. A further source of reliable auxiliary power, independent of transmission system connections, is provided by the Appendix R Diesel Generator. The Appendix R Diesel Generator can provide an alternate backup power source in case of loss of onsite emergency power and concurrent loss of offsite power as well as required auxiliary power for alternate safe shutdown systems equipment.
The plant turbine generator is a main source of 6.9-kV auxiliary electrical power during "online" plant operation. Power to the auxiliaries on 6.9-kV Buses 1 thru 4 is supplied by a 22/6.9-kV unit auxiliary transform er that is connected to the main generator. Power to the auxiliaries on 6.9-kV buses 5 and 6 during "on line" plant operation is supplied by a 13.8/6.9-kV station auxiliary transform er connected to an offsite supply. Power to the 480-V buses is supplied from four 6900/480-V station service transformers.
IPEC NON-QU ALITY EMERG ENCY RELATED IP-EP-A D13 Revision 22 PLAN PROCEDURE ADMIN ISTRAT IVE t--- ---- -r-- -,-- ---- ---- .---
PROCE DURES REFERENCE USE Page 206 of 309 Attachm ent 1 - Emerge ncy Action Level Bases The 6.9-kV system is arranged as six buses. During normal plant operation, two buses (5 and
- 6) receive power from the 138-kV system by bus main breakers and the 138/6.9
-kV station auxiliary transfo rmer, while buses 1, 2, 3, and 4 receive power from the main genera tor by bus main breaker s and the unit auxiliary transformer. The 480-V switchg ear buses are supplied from the 6.9-kV buses as follows: 2A from 2, 3A from 3, 5A from 5, and 6A from 6 (buses 2A and 3A are within the same power train). Tie breakers are provided between 480-V Switchg ear buses 2A and 3A, 2A and 5A, and 3A and 6A. One emerge ncy diesel-g enerato r provide s emerge ncy power to bus 5A, one to 6A, and the other two buses 2A and 3A. Each emerge ncy diesel genera tor will automatically start on a safety injection signal or upon under voltage on any 480-V switchg ear bus. (ref. 2, 3. 4)
Critical Safety Function Status Tree (CSFST ) Core Cooling-ORANGE path is entered if core exit thermo couples (TCs) are~ 700°F w1th reduced RCS Sub Cool!ng ~itlargin (SCM),
and any of the following (ref. 5):
No RCPs are running and either: core exit TCs are ~ to 700'-'F and RVUS nat. circ.
range is > 41 %, or core exit TCs are < 700°F but RVLIS full range is ~ 41 %.
11 At least one RCP is running and Reacto r Vessel water level is ~ RVLIS running range readings corresponding to Top of Active Fuel, (AF) AF.
These conditio ns indicate sub-cooling has been lost and that some fuel clad damag e may potentially occur.
Critical Safety Function Status Tree (CSFST ) Core Cooling-RED path is entered if either (ref.
6): J
- Core exit TCs ~ to 1 ,200°F, or
- Core exit TCs ~ 700 (715) °F with reduced RCS sub-cooling margin, no RCPs are running, and Unit 2 Natural Circulation range RVLIS is~ to 41% (Unit 3 RVLIS Full Range ~ 33%).
IPEC NON-QUA LITY EMERG ENCY RELATED IP-EP:-AD13 Revision 22 PLAN PROCEDURE ADMINISTRATIVE 1---------+----r-----+---~----1 PROCEDURES REFERENCE USE Page 207 of 309 Attachment 1 - Emergency Action Level Bases Either set of conditions indicates significant core exit superheating and core uncovery. This is considered a loss of the Fuel Clad barrier.
Unit3 A single-line diagram, showing the connections of the main generator to the power system grid and to standby power source is shown on Plant Drawing 9321-F-33853 [Formerly Figure 8.2-1]
(ref. 5).
Offsite (standby) power is supplied from Buchanan Substation by 138 kV and 345 kV feeders, and tw9 underground 13.8 kV feeders. In addition, there is an Appendix R Diesel Generat or at Buchanan substation connected to the *: 3.8 kV feeders and a 21 MW combustion turbine generator located at the Indian Point Site. The 13.8 kV feeders are connected to the 6.9 kV buses through autotransformers. The 480 volt engineered safety feature buses are connected to the 6.9 kV buses through station auxiliary transformers.
The 6900 volt system is divided into seven buses. These buses supply 6900 volt auxiliaries directly and 480 volt auxiliaries via the station service transformers. Two buses, numbers 5 and 6, are connected to the 136 kV system via bus main breakers and the Station Auxiliary Transformer. An alternate connection is available to the Appendix R Diesel Generator and/or the *13.8 kV off-site power network. Buses No. 1, 2, 3, and 4 are connected to the generato r main breakers and the Unit Auxiliary Transformer. Buses No. 1 and 2 can be tied to Bus No. 5 and Buses No. 3 and 4 can be tied to Bus No. 6 via bus tie breakers to provide auxiliary power during unit down time. The 480 volt system consists of seven buses, each supplied from a 6900 volt bus via a station service transformer. Four of these Buses, No. 2A, 3A, 5A and 6A, supplied from Buses No. 2, 3, 5, and 6 respectively, comprise the safety related 480 volt system. One emergency diesel-generator set is connected to bus No. 5A, one to 6A and the third to the combination of Bus No. 2A and Bus 3A. Each diesel generator is automatically started upon under-voltage on its associated 480 volt bus. (ref. 2, 3, 4)
Critical Safety Function Status Tree (CSFST) Core Cooling-RED path is ~ntered if either (ref.
7):
IPEC NON-QUA LITY EMERG ENCY RELATED IP-EP-A D13 Revision 22 PLAN PROCEDURE ADMINIS TRATIVE r------------t----,-----+-----,---
PROCED URES REFERENCE USE Page 208 of 309 Attachm ent 1 - Emergen cy Action Level Bases e Core exit TCs ~ to 1,200°F, or
- Core exit TCs =. 700 (715) °F with reduced RCS SCM, no RCPs are running, and Unit 2 Natural Circulati on range RVLIS is:::. to 41% (Unit 3 RVLIS Full Range:::. 33%).
Either set of condition s indicates significa nt core exit superheating and core uncovery. This is considered a loss of the Fuel Clad barrier.
Critical Safety Function Status Tree (CSFST ) Core Cooling- ORANGE path is entered if core exit thermoc ouples (TCs) are~ 715°F with reduced RCS SCM, and any of the following (ref.
7):
33%, or core exit TCs < 700°F but RVL!S fuli range ~ 33%.
11 At least one RCP is running aiid Reactor Vassel watcx level is ~ RVLIS dynamic head range readings corresponding to TAF.
These condition s indicat(~ sub-cooling has been lost and that some fuel clad damage may potentially occur.
IPEC Basis Reference(s):
- 1. Piant Drawing 250907 [Formerly UFSAR Figure 8.2-2]
- 2. FSAR 8.2
- 3. 2-ECA-0 .0, "Loss of All AC Power"
- 4. 3-ECA-0 .0, "Loss of All AC Power"
- 5. Plant Drawing 9321-F-3 3853 [Formerly Figure 8.2-1]
- 6. 2-F-0.2, "Core Cooling"
- 7. 3-F-0.2, "Core Cooling"
IPEC NON-QUALITY EMERGENCY RELATED IP-EP-AD13 Revision 22 PLAN PROCEDURE ADMINISTRATIVE t---------1----,------+-----,-----1 PROCEDURES REFERENCE USE Page 209 of 309 Attachment 1 - Emergency Action Level Bases Category: S - System Malfunction Subcategory: 2 - A TWS / Criticality Initiating Condition: Inadvertent criticality EAL:
SU2.1 Unusual Event Unplanned sustained positive startup rate observed on nuclear instrumentation Mode Applicability:,
3 - Hot Standby, 4 - Hot Shutdown NEI 99-01 Basis:
This EAL addresses inadvertent criticality events. This EAL indicates a potential degradation of the levei of safety of the plant, warranting an Unusual Event classification. This EAL excludes inadvertent criticalities that occu; during planned reactivity changes associated with reactor startups (e.g., criticality earlier than estimated).
This condition can be identified using startup rate monitors. The term "sustained" is used in order to allow exclusion of expected short term positive startup rates from planned control rod movements such as shutdown bank withdrawal. These short term positive startup rates are the result of the increase in neutron population due to subcritical multiplication.
Escalation would be by the Fission Product Barrier Table, as appropriate to the operating mode at the time of the event.
IPEC Basis:
The startup rate for each channel is indicated at the main control board in terms of decades per minute over the range of -0.5 to +5.0 decades/min.
IPEC Basis Reference(s):
- 1. Unit 2 FSAR Section 7.4 Nuclear Instrumentation
- 2. Unit 3 FSAR Section 7.4 Excore Nuclear Instrumentation
IPEC NON-QU ALITY EMERGENCY RELATED IP-EP-AD13 Revision 22 PLAN PROCEDURE ADMINISTRATIVE J----------;-----.------1----
-,-----1 PROCEDURES REFERENCE USE Page 210 of 309 Attachment 1 - Emergency Action Level Bases Category: S - System Malfunction Subcategory: 2 - ATWS / Criticality Initiating Condition: Automatic trip fails to shut down the reactor and the manual actions taken from the reactor control console are successful in shutting down the reactor EAL:
SA2.1 Alert Failure of an automatic trip signal to reduce power range < 5%
AND Manual trip actions taken at the reactor control console (manual reactor trip switche s) are successful Mode Applicability:
1 - Power Operations, 2 - Stnrtup NEI 99-01 Basis:
The reactor should be considered shutdown when it producing less heat than the maximum decay heat load for which the safety systems are designed (5% pm,ver). This EAL equates to the criteria used to determine a valid Sub-criticality Red Path.
Manual trip actions taken at the reactor control console a;e any set of actions by the reactor operator(s) which causes or should cause control rods to be rapidly inserted into the core and shuts down the reactor.
This condition indicates failure of the automatic protection system to trip the reactor.
This condition is more than a potential degradation of a safety system in that a front line automatic protection system did not function in response to a plant transient. Thus the plant safety has been compromised because design limits of the fuel may have been exceeded. An Alert is indicated because conditions may exist that lead to potential loss of fuel clad or RCS and because of the failure of the Reactor Protection System to automatically shut down the plant.
If manual actions taken at the reactor control console fail to shut down the reactor, the event would escalate to a Site Area Emergency.
IPEC NON-QU ALITY EMERG ENCY RELATED IP-EP-AD13 Revision 22 PLAN PROCEDURE ADMINISTRATIVE i - - - - - - - - - - i - - - - - - ~ - - - - - ~ - - - - ;
PROCE DURES REFERENCE USE Page 211 of 309 Attachment 1 - Emergency Action Level Bases IPEC Basis:
CSFST Sub-criticality - RED path is entered based on > 5% reactor power followin g a reactor trip (ref. 1).
A reactor trip is automatically initiated by the Reactor Protection System (RPS) when certain continuously monitored parameters exceed predetermined set-points.
Following a successful reactor trip, rapid insertion of the control rods occurs. Nuclea r power promptly drops to a few percent of the original power level and then decays to a level some 8 decades less at a startup rate of about-1 /3 DPM. The reactor power drop continu es until reactor power reaches the point at which the influence of source neutrons on reactor power
_/
starts to be observable. A predictable post-trip response from an automatic reactor trip signal should therefore consist of a prompt drop in reactor power as sensed by the nuclear instrumentation and a negative startup rate as nuG!ear power drops into the source range.
If expected shutdown responses :::annot be verified, operators perform contingency actions that manually insert controi rods, opening the reactor trip and bypass breakers. Local opening of these breakers requires* actions outside of the Control Room; rapid control rod insFJrtion by these methods is therefore not considered a "successful" manual reactor trip. For purposes of emergency classification, a "successful" manual reactor trip, therefore, includes only those immediate actions taken by the reactor operator in the Control Room which are the manual reactor trip switches. These switches and controls can be rapidly manipulated from the Control Room. (ref. 2, 3)
In the event that the operator identifies a reactor trip is imminent and successfully initiates a manual reactor trip before the automatic trip set-point is reached, no declaration is required.
The successful manual trip of the reactor before it reaches its automatic trip set-poin t or reactor trip signals caused by instrumentation channel failures do not lead to a potentia l fission product barrier loss. If manual reactor trip actions in the Control Room fail to reduce reactor power below the power associated with the safety system design (< 5%}, the event escalates to the Site Area Emergency under EAL SS2.1.
IPEC NON-QUALITY
,;\ t'i* ., .
- J;,~r:J l~ EMERG ENCY RELATED IP-EP-A D13 Revision 22
- 'l.i...;.?.~
I
.,,, ,, :;i.,.,
PLAN PROCEDURE ADMIN ISTRAT IVE PROCE DURES REFERENCE USE Page I 212 of I 309 Attachm ent 1 - Emerge ncy Action Level Bases IPEC Ba sis Reference(s):
- 1. CSFS T F-0.1, Sub-cri ticality
IPEC NON-QUALITY EMERGENCY RELATED IP-EP-Ab13 Revision 22 PLAN PROCEDURE ADMINISTRATIVE 1----------~-----~---1 PROCEDURES REFERENCE USE Page 213 of 309 Attachment 1 - Emergency Action Level Bases Category: S - System Malfunction Subcategory: 2 - ATWS I Criticality Initiating Condition: Automatic trip fails to shut down the reactor and manual actions taken from the reactor control console are not successful in shutting down the reactor EAL:
SS2.1 Site Area Emergency Failure of an automatic trip signal to reduce power range < 5%
AND ManuaHrip actions taken at the reactor control console (manual reactor trip switches) are not successful Mode Applicability:
1- Pm,"f::r Operations, 2 ** Startup NEI 99~01 Basis:
Under these conditions, the rea-:.~to:- is producing more heat tha:1 the maximum decay heat load for which the safety systems are designed and effort,s to bring the reactor subcritical are unsuccessful. A Site Area Emergency is warranted because conditions exist that lead to imminent loss or potential loss of both fuel clad and RCS.
The reactor should be considered shutdown when it producing less heat than the maximum decay heat load for which the safety systems are designed (5% power). This EAL equates to the criteria used to determine a valid Sub-criticality Red Path.
Manual trip actions taken at the reactor control console are any set of actions by the reactor operator(s) which causes or should cause control rods to be rapidly inserted into the core and shuts down the reactor.
Manual trip actions are not considered successful if action away from the reactor control console is required to trip the reactor. This EAL is still applicable even if actions taken away from the reactor control console are successful in shutting the reactor down because the
IPEC NON-QUALITY EMERG ENCY RELATED IP-EP-A D13 Revision 22 PLAN PROCEDURE ADMINIS TRATIVE 1--- ----- --~- ---1 ---~ ---i PROCED URES REFERENCE USE Page 214 of 309 Attachm ent 1 - Emergen cy Action Level Bases design limits of the fuel may have been exceeded or because of the gross failure of the Reactor Protection System to shut down the plant.
Although this IC may be viewed as redunda nt to the Fission Product Barrier Degrada tion EALs, its inclusion is necessa ry to better assure timely recognition and emergen cy response Escalation of this event to a General Emergen cy would be due to a prolonge d condition leading to an extreme challenge to either core-cooling or heat removal.
IPEC Basis:
CSFST Sub-criticality - RED path is entered based on > 5% reactor power following a reactor trip (ref. 1).
A reactor trip is automatica!ly initiated by the Readoi Pmcection System (RPS) when certain continuo usly monitored paramet ers e:i<ceed p:ed-atarmined set-points.
Following a successful reactor trip, rapid insertion of the control mds occurs. Nuclear power promptly drops to a few percant of tlB original power level and then decays to a level some 8
decades less at a startup rate of about -1 /3 DPM. The reactor power drop continues until reactor power reaches the point at which the influence of source neutrons on reactor power starts to be observable. A predictable post-trip response from an automat ic reactor trip signal should therefore consist of a prompt drop in reactor power as sensed by the nuclear instrumentation and a negative startup rate as nuclear power drops into the source-range.
If expected shutdow n responses cannot be verified, operators perform continge ncy actions that manually insert control rods, opening the reactor trip and bypass breakers. Local opening of these breakers requires actions outside of the Control Room; rapid control rod,,insertion by these methods is therefore not considered a "successful" manual reactor -
trip. For purpose s of emergen cy classification, a "successful" manual reactor trip, therefore, includes only those immedia te actions taken by the reactor operator in the Control Room which are the manual reactor trip switches. These switches and controls can be rapidly manipulated from the Control Room. (ref. 2, 3)
IPEC NON-QUA LITY EMERGENCY RELATED IP-EP-AD13 Revision 22 PLAN PROCEDURE ADMINISTRATIVE i--------1-------,---+-----r-
l PROCEDURES REFERENCE USE Page 215 of 309 Attachment 1 - Emergency Action Level Bases IPEC Basis Reference(s):
- 1. CSFST F-0.1, Sub-criticality
- 2. 2-E-0 REACTOR TRIP OR SAFETY INJECTION
- 3. 3-E-0 REACTOR TRIP OR SAFETY INJECTION
IPEC NON-QUALITY EMERGENCY RELATED IP-EP-AD13 Revision 22 PLAN PROCEDURE ADMINISTRATIVE 1-------1------1----~----l PROCEDURES REFERENCE USE Page 216 of 309 Attachment 1 - Emergency Action Level Bases Category: S - System Malfunction Subcategory: 2 - A TWS I Criticality Initiating Condition: Automatic trip and all manual actions fail to shut down the reactor and indication of an extreme challenge to the ability to cool the core exists EAL:
SG2.1 General Emergency Failure of automatic and all manual trip signals to reduce power range < 5%
AND Actual or imminent conditions requiring entry into EITHER:
RED path in F-0.2, CORE COOLING OR RED path in F-0.3, HEAT SINK Mode Applicability:
1 - Power Operations, 2 - Startup NEI 99-01 Basis:
Under these conditions, the reactor is producing more heat than the maximum decay heat load for which the safety systems are designed and efforts to bring the reactor subcritical are unsuccessful.
The reactor should be considered shutdown when it producing less heat than the maximum decay heat load for which the safety systems are designed (5% power). This EAL equates to the criteria used to determine a valid Sub-criticality Red Path.
An extreme challenge to the ability to cool the core exists when core exit temperatures are at or approaching 1200 degrees F or if reactor vessel water level is below the top of active fuel.
This EAL equates to a Core Cooling RED condition combined with a Sub-criticality RED condition.
IPEC NON-QUA LITY EMERG ENCY RELATED IP-EP-A D13 Revision 22 PLAN PROCEDURE ADMINIS TRATIVE r-------r-------r---t----..--------1 PROCED URES REFERENCE USE Page 217 of 309 Attachm ent 1 - Emergen cy Actionle vel Bases Another consideration is the inability to initially remove heat during the early stages of this sequenc e. If emergen cy feed-wat er flow is insufficient to remove the amount of heat required by design from at least one steam generator, an extreme challenge should be considered to exist. This condition equates to a Heat Sink RED condition combined with a Sub-criticality RED condition.
In the event either of these challenges exists at a time that the reactor has not been brought below the power associated with the safety system design a core melt sequenc e exists. In this situation, core degrada tion can occur rapidly. For this reason, the General Emergen cy declarati on is intended to be anticipatory of the fission product barrier table declarat ion to permit maximum off-site intervention time.
IPEC Basis:
CSFST Sub-criticality - RED path is entered based on > 5% reactor power following a reactor trip.
CSFST Heat Sink - RED path is entered based on both:
All S/G's narrow range leve! < 9 (7)% [26 (17)% adv. cnmt.]
AND Total feed-wat er flow to S/Gs < 400 (365) gpm CSFST Core Cooling - RED path is entered based on either:
Core exit thermoc ouples > 1200° F OR Core exit thermoc ouples> 700 (715) ° F AND RVLIS level < 41 (33)% w/ no RCPs (TAF)
The combination of these conditions (reactor power > 5% and Heat Sink-RE D or Core Cooling RED path) indicates the ultimate heat sink function is under extreme challenge. Additionally, the efforts to bring the reactor subcritical have been unsuccessful and, as a result, the reactor is producing more heat load for which the safety systems were designed. This situation could be the precurso r for a core melt sequence.
IPEC NON-QUAL ITY EMERGE NCY RELATED IP-EP-AD13 Revision 22 PLAN PROCEDURE ADMINIST RATIVE i--------r---.----t----...------i PROCEDURES REFERENCE USE Page 218 of 309 Attachment 1 - Emergency Action Level Bases A major consideration is the inability to initially remove heat during the early stages of this sequence. If emergenc y feed-water flow is insufficient to remove the amount of heat required by design from at least one steam generator, an extreme challenge should be considered to exist. This equates to a HEAT Sink RED condition. If CETs indicate> 1200° For are> 700 (715) ° F with RVLIS < 41 (33) % a condition indicative of severe challenge to heat removal also exists.
In the event this challenge exists at a time when the reactor has not been brought below the power associated with safety system design power (5%) a core melt sequence is considered to exist. In this situation, core d6gradation can occur rapidly. For this reason, the General Emergenc y declaration is intended to be anticipatory of the fission product barrier matrix declaration to permit rnaximum offsite intervention Ume.
iPEC Basis Reference(s):
- 1. CSFST F-0.1, Sub-criticaiity
- 2. CSFST F-0.2, Ccire Cooling
- 3. CSFST F-0.3, Heat Sink
- 4. FR-S.1, Response to Reactor Restart/ATWS
- 5. FR-S.2, Response lo Loss of Core Shutdown
IPEC NON-QUA LITY EMERGENCY RELATED IP-EP-AD13 Revision 22 PLAN PROCEDURE ADMINISTRATIVE 1-------+---~---1---~---l PROCEDURES REFERENCE USE Page 219 of 309 Attachment 1 - Emergency Action Level Bases Category: S - System Malfunction Subcategory: 3 - Inability to Reach Shutdown Conditions Initiating Condition: Inability to reach required shutdown within Technical Specification limits EAL:
SU3.1 Unusual Event Plant is not brought to required operating mode within Technical Specifications LCO action statement time Mode Applicability:
1 - Power Operations, 2 - Startup, 3 - Hot Standby, 4 - Hot Shutdown NE! 99-01 Basis:
Limiting Conditions of Operation (LCOs) require the plant to be brought to a required shutdown mode when the Technical Specification required configuration cannot be restored. Depending on the circumstances, this may or may not be an emergency or precursor to a more severe condition. In any case, the initiation of plant shutdown required by the site Technica l
Specifications requires a one hour report under 10 CFR 50. 72 (b) Non-emergency events. The plant is within its safety envelope when being shut down vvithin the allowable action statement time in the Technical Specifications. An immediate Unusual Event is required when the plant is not brought tothe required operating mode within the allowable action statement time in the Technical Specifications. Declaration of an Unusual Event is based on the time at which the LCO-specified action statement time period elapses under the site Technical Specifications and is not related to how long a condition may have existed. Other required Technical Specification shutdowns that involve precursors to more serious events are addressed by other EALs.
' \
IPEC Basis:
None
,IPEC Basis Reference(s):
- 1. Technical Specifications
IPEC NON-QU ALITY EMERG ENCY RELATED IP-EP-AD13 Revision 22 PLAN PROCEDURE ADMINISTRATIVE ~-------~----~---1 PROCEDURES REFERENCE USE Page 220 of 309 Attachment 1 - Emergency Action Level Bases Category: S - System Malfunction
- Subcategory: 4 - Instrumentation I Communications Initiating Condition: Unplanned loss of safety system annunciation or indication in the control room for 15 minutes or longer EAL:
SU4.1 Unusual Event Unplanned loss of> approximately 75% of Controi Room Overhead annunciators or Control Room indicators, Table S-3, associated with safety systems for~ 15 min.
(Note 3)
Note 3: The Emergency Director should not wait until the applicable time has elapsed, but should declare the event as soon as it is determined that the condition will likely exceed the applicable time.
___.. . ,. _____________;T~------
______r_a_b_le_~a3 Safety Sl,~tt? _t~a_t....o_r_~_ _....,
o Reactivity Control
- RCS inventory
" Reactor Ti"ip I
- Fission Prnduct Barriers Mode Applicability:
1 - Power Operations, 2 - Startup, 3 - Hot Standby, 4 - Hot Shutdown NEI 99-01 Basis:
This EAL is intended to recognize the difficulty associated with monitoring changin g plant conditions without the use of a major portion of the annunciation or indication equipm ent.
Recognition of the availability of computer based indication equipment is conside red (e.g.,
SPDS, plant computer, etc.).
Quantification is arbitrary, however, it is estimated that if approximately 75% of the safety system annunciators or indicators are lost, there is an increased risk that a degrad ed plant
IPEC NON-QUA LITY EMERG ENCY RELATED IP-EP-AD13 Revision 22 PLAN PROCEDURE ADMINISTRATIVE 1------1----.---+-----,------1 PROCEDURES REFERENCE USE Page 221 of 309 Attachment 1 - Emergency Action Level Bases condition could go undetected. It is not intended that plant personnel perform a detailed count of the _instrumentation lost but use the value as a judgmen t threshold for determining .the severity of the plant conditions.
It is further recognized that most plant designs provide redundant safety system indication powered from separate uninterruptible power supplies. While failure of a large portion of annunciators is more likely than a failure of a large portion of indications, the concern is included in this EAL due to difficulty associated with assessment of plant conditions. The loss of specific, or several, safety system indicators should remain a function of that specific system or component operability status. This will be addressed by the specific Technical Specification.
The initiation of a Technical Specification imposed plant shutdown related to the instrument loss will be reported via 10CFR50.72. If the shutdown is not in compliance with the Technical Specification action, the Unusual Event is based on SU3.1 "Inability to Reach Required Shutdown Within Technical Specification limits."
Annunciators or indicators associated with safety systems include those identified ln the Abnormal Operating Procedures, in the Emergency Operating Procedures, and in other EALs (e.g., area, process, and/or effluent rad monitors, etc.).
Fifteen minutes was selected as a threshold to exclude transient or momentary power losses.
Due to the limited number of safety systems in operation during cold shutdown, refueling, and defueled modes, no applicability is indicated during these modes of operation.
This Unusual Event will be escalated to an Alert based on a concurrent loss of compensatory indications or if a significant transient is in progress during the loss of annunciation or indication.
IPEC Basis:
Computer-based monitoring capability include PICS, CMFS and QSPDS.
IPEC Basis Reference(s):
None
IPEC NON-QU ALITY EMERGENCY RELATED IP-EP-AD13 Revision 22 PLAN PROCEDURE ADMINISTRATIVE --------11-----,----1-----
.----1 PROCEDURES REFERENCE USE Page 222 of 309 Attachment 1 - Emergency Action Level Bases Category: S - System Malfunction Subcategory: 4 - Instrumentation / Communications Initiating Condition: Loss of all onsite or offsite communications capabilities EAL:
SU4.2 Unusual Event Loss of all Table S-4 onsite (internal) communications capability affecting the ability to perform routine operations
- OR Loss of all Table S-4 offsite (external) communications capability affecting the ability to perform* offsite notifications
- a Table SA4 Communications Systems
~ ............ ~~-
! Onsite Offsite System l (internal) (external)
Plant Telephone System I
X X Plant Radio System X
-~-- - --
Page/Party System X
Emergency Notification System X
Mode Applicability:
1 - Power Operations, 2 - Startup, 3 - Hot Standby, 4 - Hot Shutdown NEI 99-01 Basis:
The purpose of this EAL is to recognize a loss of communications capability that either defeats the plant operations staff ability to perform routine tasks necessary for plant operatio ns or the ability to communicate issues ,with off-site authorities.
The loss of off-site communications ability is expected to be significantly more compre hensive than the condition addressed by 10 CFR 50. 72.
IPEC NON-QUA LITY EMERGENCY RELATED IP-EP-AD13 Revision 22 PLAN PROCEDURE ADMINISTRATIVE - - - - - - - + - - ~ - - - - ~ - - - 1 PROCEDURES REFERENCE USE Page 223 of* 309 Attachment 1 - Emergency Action Level Bases The availability of one method of ordinary off-site communications is sufficient to inform federal, state; and local authorities of plant problems. This EAL is intended to be used only when extraordinary means (e.g., relaying of information from non-routine radio transmissions, individuals being sent to off-site locations, etc.) are being used to make communications possible.
The Table S-4 list for on-site communications loss encompasses the loss of all means of communications (e.g., commercial telephones, sound.powered phone systems, page party system (Gaitronics) and radios/ walkie-talkies) routinely used for operations.
The Table S-4 list for off-site communications loss encompasses the loss of all means of communications with off-site authorities. This includes the ENS, commercial telephone lines, telecopy transmissions, and dedicated phone systems that are routinely used for offsite emergency notifications.
IPEC Basis:
Unit 2 Routine Unit 2 plant communications are conducted via telephone, radio, and Pubiic Address (paging) systems.
The plant telephone and radio communications systems include two (2) PBX electronic switches, backup phone lines and a UHF radio system. A third PBX electronic switch is located at the EOF.
The public address system for Indian Point Unit 2 consists of "Page" and "Party" communications, which are common to both the primary (nuclear) and secondary (conventional) portions of Units 1 and 2. The "Page" and "Party" communications are also
)
monitored at a speaker panel located in the CCR.
An in-house radio system provides communications between the Technical Support Center, the l&C office, and in-plant personnel.
IPEC NON-QUAL ITY EMERGENCY RELATED IP-EP-AD13 Revision 22 PLAN PROCEDURE ADMINISTRATIVE 1 - - - - - - - + - - - - - - . - - - - + - - - - - . - - ~
PROCEDURES REFERENCE USE Page 224 of 309 Attachment 1 - Emergency Action Level Bases Unit 3 The Unit 3 communications system was designed to ensure the reliable, timely flow of information and action directives necessary during normal operation, and particularly for the mitigation of emergencies.
The Public Address (PA) System has two subsystems: the Plant Party Paging and the Site PA System. The system consists of three channels. Two of these channels are common to both the primary (nuclear) and secondary (conventional) portions of the plant. The third line provides an additional channel in the primary portion of the Unit 3 plant. A "Page" handset is used for page purposes only and calls originating from this handset can be heard on all loudspeakers in the primary and secondary portions of the facility. The remaining two "Page-Party" handsets are used for loudspeakers paging and party-line conversations, as selected by the control room operator.
This EAL is the hot condition equivalent of the cold condition EAL CU4.1.
!PEC Basis Reference(s):
- 1. Unit 2 FSAR Section 7.7.4 Communications
- 2. Unit 3 FSAR Section 9.6.5 Plant Communications Systems
IPEC NON-QUALJTY EMERGENCY RELATED IP-EP-AD13 Revision 22 PLAN PROCEDURE ADMINISTRATIVE 1-------1---~--1----~----l PROCEDURES REFERENCE USE Page 225 of
- 309 Attachment 1 - Emergency Action Level Bases Category: S - System Malfunction Subcateg ory: 4 - Instrumentation I Communications Initiating Condition : Unplanned loss of safety system annunciation or indication in the control room with either (1) a significant transient in progress, or (2) compensatory indicators unavailable EAL:
SA4.1 Alert Unplanned loss of > approximately 75% of Control Room Overhead annunciators or Control Room indicators, Table S-3, associated with safety systems for~ 15 min. (Note 3)
AND EITHER:
Any significant transient is in progress, Table S-2 OR Compensatory indications are unavailable Note 3: The Emergency Director should not wait until the applicable time has elapsed, but should declare the event as soon as it is determined that the condition will likely exceed the applicable time.
Table S-2 Significan t Transient
- Automatic turbine runback > 25% thermal reactor power e Electrical load rejection > 25% full electrical load
- Safety injection activation
- Thermal power oscillations of > 10%
Table S-3 Safety System Indicators
- Reactivity Control
- RCS Inventory
- Fission Product Barriers Mode Applicabi lity:
1 - Power Operations, 2 - Startup, 3 - Hot Standby, 4 - Hot Shutdown
IPEC NON-QUA LITY EMERGENCY RELATED IP-EP-AD13 Revision 22 PLAN PROCEDURE ADMINISTRATIVE t---- -- ----- r---- ----- --..-- -
PROCEDURES REFERENCE USE Page 226 of 309 Attachment 1 - Emergency Action Level Bases NEI 99-01 Basis:
This EAL is intended to recognize the difficulty associated with monitoring changing plant conditions without the use of a major portion of the annunciation or indication equipment during a significant transient.
Recognition of the availability of computer based indication equipment is considered (e.g.,
PICS, CMFS or QSPDS).
Quantification is arbitrary, however, it is estimated that if approximately 75% of the safety system annunciators or indicators are lost, there is an increased risk that a degraded plant condition could go undetected. It is not intended that plant personnel perform a detailed count of the instrumentation lost but use the value as a judgment threshold for determining the severity of the plant conditions. ft is also not intended that the Shift Manager be tasked with making a judgmen t decision as to whether additional personnel are required to provide increased monitoring of system operation.
It is further recognized that most plant designs provide redundant safety system indication powered from separate uninterruptible power supplies. While failure of a large portion of annunciators is more likely than a failure of a large portion of indications, the concern is included in this EAL due to difficulty associated with assessment of plant conditions. The loss of specific, or several, safety system indicators should remain a function of that specific system or component operability status. This will be addressed by the specific Technical Specification.
The initiation of a Technical Specification imposed plant shutdown related to the instrume nt I
loss will be reported via 10 CFR 50.72. If the shutdown is not in compliance with the Technical Specification action, the Unusual Event is based on SU3.1 "Plant is not brought to required operating mode within Technical Specifications LCO action statement time."
The annunciators or indicators for this EAL include those identified in the Abnormal Operating Procedures, in the Emergency Operating Procedures, and in other EALs (e.g., area, process, and/or effluent rad monitors, etc.).
IPEC NON-QUA LITY EMERGENCY RELATED IP-EP-AD13 Revision 22 PLAN PROCEDURE ADMINISTRATIVE - - - - - - - + - - ~ - - - l - - - ~ - - - - l PROCEDURES REFERENCE USE Page 227 of 309 Attachment 1 - Emergency Action Level Bases "Compensatory indications" in this context includes computer based information such as PICS, CMFS or QSPDS. If both a major portion of the annunciation system and all computer monitoring are unavailable, the Alert is required.
Due to the limited number of safety systems in operation during cold shutdown, refueling and defueled modes, no EAL is indicated during those modes of operation.
Fifteen minutes was selected as a threshold to exclude transient or momentary power losses.
This Alert will be escalated to a Site Area Emergency if the operating crew cannot monitor the transient in progress due to a concurrent loss of compensatory indications with a significant transient in progress during the loss of annunciation or indication.
IPEC Basis:
Significant transients are lisled in Table S-2 and inciude response to automatic or manually initiated functions such gs trips, rnnbacks invo:ving great.er than 25% thermal power change, electrical load rejections or greater than 25% ful! electrical load, safety injections, or thermal power oscillatio'ns of 10% er greater.
IPEC Basis Reference(s):
None
IPEC NON-QU ALITY EMERG ENCY RELATED IP-EP-A D13 Revision 22 PLAN PROCEDURE ADMIN ISTRAT IVE 1 - - - - - - - - - - - - - . - - - - - - ~ - - 1 PROCE DURES REFERENCE USE Page 228 of 309 Attachm ent 1 - Emergency Action Level Bases Category: S - System Malfunction Subcategory: 4 - Instrumentation / Commu nication s Initiating Condition: Inability to monitor a significant transient in progress EAL:
SS4.1 Site Area Emerg ency Loss of> approxi mately 75% of Control Room Overhead annunciators or Control Room indicators, Table S-3, associa ted with safety systems AND Any significant transien t is in progress, Table s..:2 AND Compe nsatory indicati ons are unavailable
- Automa tic turbine rt.mbad~ 25% thr1fmal reactor power
- Electrical load rejection > 25}{. fuli .sl'7:ctrical load
- ~:eactor trip o
Safety injection activation Therma l power oscillations of> 10% I I
Table S-3 Safety System Indicators
- Reactivity Control
- RCS Inventory o Reactor Trip
- Fission Product Barriers Mode Applicability:
1 - Power Operations, 2 - Startup, 3 - Hot Standby, 4 - Hot Shutdown
IPEC NON-Q UALITY EMER GENC Y RELATED IP-EP-AD13 Revision 22 PLAN PROCEDURE ADMIN ISTRA TIVE r----------t---~---+-----r---
-1 PROC EDUR ES REFERENCE USE Page 229 of 309 Attach ment 1 - Emerg ency Action Level Bases NEI 99a01 Basis:
This EAL is intended to recognize the threat to plant safety associated with the comple te loss of capab ility of the control room staff to monitor plant response to a signific ant transient.
Quant ificatio n is arbitrary, however, it is estimated that if approx imately 75% of the safety system annunciators or indicators are lost, there is an increased risk that a degrad ed plant condition could go undetected. It is not intended that plant personnel perform a detailed count of the instrumentation lost but use the value as a judgm ent threshold for determ ining the severi ty of the plant conditions. It is also not intended that the Shift Manag er be tasked with making a judgm ent decision as to wheth er additional personnel are require d to provid e increa sed monitoring of system operation.
It is further rncognized that most plant designs provide redundant safety systen, indication power ed from separate uninterruptible pmv< r supplies. While failure of a large portion of annun ciators is more likely than a failure of a large portion of indications, the concern is included in this EAL due to difficulty assod::r:,3d with ussessment of plant conditions. The loss.
of specific, or several, safety system indicators should remain a functio n of that specific system or compo nent operability status. This is addressed by the specific Techn ical Specification. The initiation of a Technical Specification imposed plant shutdown related to the instrum ent loss will be reported via 10 CFR 50. 72. If the shutdown is not in compliance with the Techn ical Specification action, the Unusual Event is based on SU3.1 "Inability to Reach Required Shutdo wn Within Technical Specification Limits."
A Site Area Emerg ency is considered to exist if the control room staff canno t monito r safety functio11s needed for protection of the public while a significant transie nt is in progress.
Annun ciators for this EAL are limited to include those identified in the Abnorm al Opera ting Procedures, in the Emerg ency Operating Procedures, and in other EALs
(.g., area, process, and/or effluen t rad monitors, etc.)]
IPEC NON-QUA LITY EMERGENCY RELATED IP-EP-AD13 Revision 22 PLAN PROCEDURE ADMINISTRATIVE i--------t----,------+--------.-----i PROCEDURES REFERENCE USE Page 230 of 309 Attachment 1 - Emergency Action Level Bases Indications needed to monitor safety functions necessary for protection of the public must include control room indications, computer generated indications and dedicated annunciation capability.
Indications should be those used to determine such functions as the ability to shut down the reactor, maintain the core cooled, to maintain the reactor coolant system intact, maintain the spent fuel cooled, and to maintain containment intact.
"Compensatory indications 11 in this context includes computer based information such as PIGS, CMFS or QSPDS.
Fifteen minutes was selected as a threshold to exclude transient or momentary power losses.
Due to the limited number of safety systems ln operation during cold shutdown, refueling and defueled modes, no EAL is indicated during thosa modes of operation.
IPEC Basis:
Significant transients are hsted in Table S-2 and include response to automatic or manually ,
initiated functions such as trips, runbacks involving greater than 25% thermal power change, electrical load rejections of greater than 25% full electrical load, safety injections, or thermal power oscillations of 10% or greater.
IPEC Basis Reference(s):
None
IPEC NON-QUALITY EMERGE NCY RELATED IP-EP-AD 13 Revision 22 PLAN PROCEDURE ADMINIST RATIVE r - - - - - - - t - - - - ~ - - - - - . . - - - - - ;
- PROCEDU RES REFERENCE USE Page 231 of 309 Attachmen t 1 - Emergenc y Action Level Bases Category: S -.System Malfunction Subcategory: . 5 - Fuel Clad Degradation Initiating Condition: Fuel clad degradation EAL:
SUS.1 Unusual Event
[Unit 3]: 1(2)RM063 A/B Gross Failed Fuel Detector High alarm (> 50 ~tCi/ml)
Mode Applicability:
1 - Power Operations, 2 - Startup, 3- Hot Standby, 4- Hot Shutdown NEI 99-01 Basis:
This EAL is included because it is a precursor of rnorn serious conditions and, as result, is considered lo be a potentiai degradation of U1e iev':,I of safety of the plant.
Escalation of this EAL to the Alert level is via the Fission Product Barriers.
This threshold addresses gross failed fuel det0Gtor radigtion monitor readings that provide indication of a degradatio n of fuel clad integrity.
IPEC Basis:
Unit 2 Unit 2 does not have installed radiation monitoring capable of detecting fuel damage equivalent to Technical Specification coolant activity. Unit 2 would declare the Unusual event
- based on EAL SU5.2 due to a coolant sample exceeding Technical Specification limit of> 60
µCi/gm 1-131 dose equivalent.
Unit 3 The Unit 3 1(2)RM063 Gross Failed Fuel Detector high alarm (Radiation Monitoring Control Cabinet - R63A/B GFFD) provides indication of fuel damage > 50 ~tCi/cc.
IPEC Basis Reference(s):
- 1. 3-AOP-HIACT-1 RCS High Activity
- 2. 3-ARP-04 0 R63A/B GFFD
- 3. 3-SOP-RM-1 O Radiation Monitor Set point Control
IPEC NON-QUALITY EMERGENCY RELATED IP-EP-AD13 Revision 22 PLAN PROCEDURE ADMINISTRATIVE 1------ -----~- ----1-- --~-.... .,
PROCEDURES REFERENCE USE Page 232 of 309 Attachment 1 - Emergency Action Level Bases Category: S - System Malfunction Subcategory: 5 - Fuel Clad Degradation Initiating Condition: Fuel clad degradation EAL:
SU5.2 Unusual Event Coolant sample activity:
>60 µCi/gm 1-131 dose equivalent Mode Applicabmty:
1 - Power Opemtions, 2 - Startup, 3 - Hot Standby, 4 - Hot Shutdown NEI 99w01 Basis:
This EAL is included becaLise lt is a precursor of ,~ere serious conditkms and, as result, is considered to be a potential degradation d the ievGI of safety of the piant.
Escalation of this E.A.L to ti1e Alert le,vel is via th:::: Fis3ion Product Barriers.
This threshold addresses coolant samples exceeding coolant technical specit1catior.s for transient iodine spiking limits.
IPEC Basis:
Elevated reactor coolant activity represents a potential degradation in the level of safety of the plant and a potential precursor of more serious problems.
This EAL addresses reactor coolant samples exceeding Technical Specification LCO limit 3.4.16 A.1, which is applicable in Hot operating modes (ref. 1). The iodine spike limit of 60.0
µCi/gm 1-131 dose equivalent provides an iodine peak or spike limit for the reactor coolant concentration to assure that the radiological consequence of a postulated Steam Line Break or SGTR are within 10CFR50.67 dose guidelines (ref. 1).
10CFR50.67 dose guidelines (ref. 2)
IPEC Basis Reference(s);
- 1. Unit 2 Technical Specifications Section 3.4.16 A.1
- 2. Unit 3 Technical Specifications Section 3.4.16 A.1 (Revis~d)
IPEC NON-QUAL ITY EMERGE NCY RELATED IP-EP-AD13 Revision 22 PLAN PROCEDURE ADMINISTRATIVE 1--------+------1--------1 PROCEDURES REFERENCE USE Page 233 of 309 Attachment 1 - Emergency Action Level Bases Category: S - System Malfunction Subcategory: 6 - RCS Leakage Initiating Condition: RCS leakage EAL:
SU6.1 Unusual Event Unidentified or pressure boundary leakage > 1O gpm OR Identified_. leakage > 25 gpm Mode Applicability:
1 - Power Operations, 2 - Startup, 3 - Hot Standby, 4- Hot Shutdown NEI 99-01 Basis:
The conditions of this EAL may be a precursor of more serious conditions and, as result, is considered to be a potential degradation of the level of safety of the plant. The 10 gpm value for the unidentified and pressure boundary leakage was selected as it is observable with normal control room indications. Lesser values must generally be determined through time-cor:suming surveillance tests (e.g., mass balances).
Relief valve normal operation should be excluded from this EAL. However, a relief valve that operates and fails to close per design should be considered applicable to this EAL if the relief valve cannot be isolated.
The threshold for identified leakage is set at a higher value due to the lesser significance of identified leakage in comparison to unidentified or pressure boundary leakage. In either case, escalation of this EAL to the Alert level is via Fission Product Barrier Degradation EALs.
IPEC NON-QUAL ITY EMERGE NCY RELATED IP-EP-AD13 Revision 22 PLAN PROCEDURE ADMINISTRATIVE - - - - - - - + - - - - . - - - - - - + - - - - , - - ~
PROCEDURES REFERENCE USE Page 234 of 309 Attachment 1 - Emergency Action Level Bases IPEC Basis:
RCS Leak Rate Evaluations are routinely performed once a week per 0-SOP-LEAKRATE-1 (ref. 5). The Shift Manager may request performance of additional RCS Leak Rate Evaluations for reasons other than unidentified leakage increase. Leak rate evaluation can be performed by computer or manually if the computer is not available.
Steam Generator tube leakage is considered identified leakage.
Charging Pump leakage is considered separately as Non-RCPB Leakage and therefore is I
removed from the total identified leakage components. {ref. 3, 4)
IPEC Basis Referenca(s}:
- 1. Unit 2 Technical SpecifiGatJon Section 3.4.13 RCS Operational Leakage
- 2. Unit 3 Technical Specification Section 3.4. *i 3 HCS Operational Leakage
- 3. 2-AOP-LEAK-1 Sudden increase in Reacb':" Coolant System Leakage
- 4. 3--AOP-LEAK-1 Sudden !ricrease in Reactcr Cool:?.nt System Leakage
- 5. 0-SOP-LEAKRATE-1 RCS Leak-rate Surveil!ance, Evaiuation and Leak Identification
IPEC - NON-QUA LITY EMERG ENCY RELATED IP-EP-AD13 Revision 22 PLAN PROCEDURE ADMINISTRATIVE 1--- ---- --~- -+-- --~- ---1 PROCEDURES REFERENCE USE Page 235 of 309 Attachment 1 - Emergency Action Level Bases Category: S - System Malfunction Subcategory: 7 - Loss of DC Power Initiating Condition: Loss of all vital DC power for 15 minutes or longer EAL:
SS7 .1 Site Area Emergency
< 105 VDC bus voltage indications on all safety-related DC buses for~ 15 min. (Note 3)
Note 3: The Emergency Director should not wait until the applicable time has elapsed, but should declare the event as soon as it is determined that the condition will likely exceed the applicable time.
Mode Applicability:
1 - Power Operations, 2 - Startup, 3 - Hot Standby, 4 - Hot Shutdown NEI 99-01 Basis:
Loss of all DC power compromises ability to monitor and control plant safety functions.
Prolonged loss of all DC power will cause core uncovering and loss of containment integrity when there is significant decay heat and sensible heat in the reactor system.
Fifteen minutes was selected as a threshold to exclude transient or momentary power losses.
Escalation to a General Emergency would occur by Abnormal Rad Levels/Radiological Effluent, Fission Product Barrier Degradation.
IPEC Basis:
For Indian Point Unit 2, each 480V bus has an automatic transfer switch to provide alternate DC power supplies to the 480V buses. This, DC power is also supplied to 480V motor control centers.
The bus voltage is based on the minimum bus voltage necessary for the operation of safety related equipment. This voltage value incorporates a margin of at least 15 minutes of operation before the onset of inability to operate loads.
This EAL is the hot condition equivalent of the cold condition loss of DC power EAL CU6.1 .
IPEC NON-Q UALITY EMERGENCY RELATED IP-EP-AD13 Revision 22 PLAN PROCEDURE ADMINISTRATIVE 1-------1---~---1
~----1 PROCEDURES REFERENCE USE Page 236 of 309 Attachment 1 - Emergency Action Level Bases IPEC Basis Reference(s):
- 1. 2-AOP-DC Loss Of A Battery Charger Or Any 125V DC Panel
- 2. 2-PT-R076A Station Battery 21 Load Test
- 3. 2-PT-R076C Station Battery 23 Load Test
- 4. 3-AOP-DC-1 Loss Of A 125V DC Panel
- 5. SOP-EL-003, Battery Charger and 125 Volt DC System Operations
- 6. 3PT-R156A Station Battery 31 Load Profile Service Test
IPEC NON-QU ALITY EMERG ENCY RELATED IP-EP-A D13 Revisio n 22 PLAN PROCEDURE ADMIN ISTRAT IVE i-----------+---......----------,----i PROCE DURES REFERENCE USE Page 237 of 309 Attachm ent 1 - Emerge ncy Action Level Bases Category E - ISFSI EAL Group: ANY .(The EAL in this categor y is applica ble to any plant condition, hot or cold.)
An Indepe ndent Spent Fuel Storage Installation (ISFSI) is a comple x that is designe d and constru cted for the interim storage of spent nuclear fuel and other radioac tive materia ls associa ted with spent fuel storage . A significant amount of the radioac tive materia l contain ed within a cask must escape its packag ing and enter the biosphe re for there to be a signific ant environ mental effect resulting from an acciden t involving the dry storage of spent nuclear fuel.
Formal offsite plannin g is not required because the postulated worst-c ase acciden t involvin g an ISFSI has insignif icant conseq uences to the public health and safety.
An Unusua l Event is declare d on th'3 basis of the occurre nce of an event of sufficie nt magnitu de that a loaded cask coni"inement bounda ry is damaged or violated.
This include s classific ation based on a loaded fuel storage cask confinement bounda ry ioss leading to the degrad ation of the fuel during storage or posing an cpen:1tional safety problmn with respect to its remova l from storage.
Securit y events affecting the ISFSI are classifiabie under security based EALs in the Hazard s Catego ry.
Minor surface damage that does not affect storage cask bounda ry is exclude d from the scope of these EALs.
IPEC NON-QUALITY EMERGE NCY RELATED IP-EP-AD13 Revision 22 PLAN PROCEDURE ADMI NISTR ATIVE ------- +--~-- -+----- ,---~
PROCEDU RES REFERENCE USE Page 238 of 309 Attachmen t 1 - Emergency Action Level Bases Category: E-ISFSI Subcategory: None Initiating Condition: Damage to a loaded cask confinement boundary EAL:
EU1.1 Unusual Event Damage to a loaded cask confinement boundary Mode Applicability:
All NEI 99-01 Basis:
An Unusual Event in this EAL is categorized on the basis of the occurrence of an event of sufficient magnitude that a loaded cask confinernent boundary is damaged or violated. This includes classification based on a !oad1:>d fuel storaga cask confinement boundary loss leading to the degradation of the fuel during storage tX posing an operational safety problem with respect to its removai from storage.
IPEC Basis:
Confinement Boundary means the outline formed by either: ('I) the sealed, cylindrical enclosure of the Multi-Purpose Canister (MPC) shell welded to a solid baseplate, a lid welded around the top circumference of the shell wall, the port cover plates welded to the lid, and the closure ring welded to the lid and MPC shell providing the redundant sealing; or (2) the sealed, cylindrical enclosure of the Shielded Transfer Canister (STC) inner shell welded to a solid base plate and an upper flange, with the upper flange bolted to a solid closure lid with the lid to flange interface having a double elastomeric a-ring seal, and with the lid having vent and drain ports with bolted solid cover plates with each cover plate having an elastomeric a-ring seal.
Minor surface damage that does not affect storage cask boundary is excluded from the scope of this EAL.
IPEC Basis Reference(s):
- 1. Holtec International FSAR for the HI-STORM 100 Cask System
IPEC NON-QUAL ITY EMERGENCY RELATED IP-EP-AD13 Revision 22 PLAN PROCEDURE ADMINISTRATIVE 1----- ---+-- -~---+ ------ --,---
PROCEDURES REFERENCE USE Page 239 of 309 Attachment 1 - Emergency Action Level Bases NOTE: Post Unit 2 and Unit 3 Shutdown, Hot Conditions are not applicable to either Unit Category F - Fission Product Barrier Degradation EAL Group: Hot Conditions (RCS temperature > 200 °F); EALs in this category are applicable only in one or more hot operating modes including Power Operations, Startup, Hot Standby and Hot Shutdown.
EALs in this category represent threats to the defense in depth design concept that precludes the release of highly radioactive fission products to the environment. This concept relies on multiple physical barriers any one of which, if maintained intact, precludes the release of significant amounts of radioactive fission products to the environment. The primary fission product barriers are:
A. Reactor Fuel Clad (FC): The zirconium tubes which house the ceramic uranium oxide pellets along with the end plugs which are welded into each end of the fuel rods comprise the fuel clad.
B. Reactor Coolant System (RCS): The Reactor Vessel shell, vessel head, vessel nozzles and penetrations and all primary systems directly connected to the Reactor Vessel up to the first isolation valve comprise the RCS.
C. Containment (CNMT): The vapor Containment structure and all isolation valves required to maintain Containment integrity under accident conditions comprise the Containment barrier.
The EALs in this category require evaluation of the loss and potential loss thresholds listed in the fission product barrier matrix of Table F-1 (Attachment 2). "Loss" and "Potential Loss" signify the relative damage and threat of damage to the barrier. "Loss" means the barrier no longer assures containment of radioactive materials. "Potential Loss" means integrity of the barrier is threatened and could be lost if conditions continue to degrade. The number of barriers that are lost or potentially lost and the following criteria determine the appropriate emergency classification level:
I
IPEC NON-QUA LITY EMERG ENCY RELATED IP-EP-A D13 Revision 22 PLAN PROCEDURE ADMINIS TRATIVE i----------+------.---------.----1 PROCED URES REFERENCE USE Page 240 of 309 Attachm ent 1 - Emergency Action Level Bases Unusual Event:
Any loss or any potentia l loss of Primary Containment Alert:
Any Joss or any potentia l Joss of either Fuel Clad or RCS Site Area Emergency:
Loss or potentia l loss of any two barriers General Emergency:
Loss of any two barriers and loss or potential loss of third barrier The logic used for emergen cy classification based on fission product barrier monitoring should reflect the following considerations:
- The Fuel Clad barrier and the RCS barrier are weighted more heavily than the Containm ent barrier. UE EALs associated with RCS and Fuel Clad barriers are addressed under System Malfunction EALs.
tt At the Site Area Emergen cy lev&I, them must be some ability to dynamically assess how far present condition s am from the threshold for a General Emergency. For example , if Fuel C!ad and RCS barrier "loss" E.Als existed, that, in addition to offsite dose assessm ents, would require continuai assessments of radioactive inventory and containm ent integrity. Alternatively, if both Fuel Clad and RCS barrier "Potentiai Loss" EALs existed, the Emergen cy Director would 11ave more assurance that there was no immedia te need to escalate to a Genera! Emergency.
- The ability to escalate to higher emergency classes as an event deteriorates must be maintained. For example, RCS leakage steadily increasing would represent an increasing risk to public health and safety.
Fission Product Barrier EALs must be capable of addressing event dynamics. Imminent Loss or Potential Loss should result in a classification as if the affected threshold(s) are already exceeded, particula rly for the higher emergency classes.
Determine which combina tion of the three barriers are lost or have a potential loss (Figure F-1) and use FU 1.1, FA 1 .1, FS 1.1 and FG 1.1 to classify the event. Also an event for multiple events could occur which result in the conclusion that exceeding the loss or potential loss thresholds is imminen t. In this imminent loss situation use judgmen t and classify as if the thresholds are exceeded.
IPEC NON-QUAL ITY EMERGE NCY RELATED IP-EP-AD 13 Revision 22 PLAN PROCEDURE ADMINIST RATIVE 1--------+------+------,------1 PROCEDURES REFERENCE USE Page 241 of 309 Attachmen t 1 - Emergency Action Level Bases Figure F-1 L p L p L p Clad RCS 1/2
'-------'~
'-----------------~
L P RCS Ctmt
/4ss of at No
, lea st 2
~1ers?
C Yes I FG1
IPEC NON-QUALITY EMERGENCY RELATED IP-EP-AD13 Revision 22 PLAN PROCEDURE ADMINISTRATIV E 1--------- -;-----.--- ---------.- --
PROCEDURES REFERENCE USE Page 242 of 309 Attachment 1 - Emergency Action Level Bases Category: Fission Product Barrier Degradation Subcategory: N/A Initiating Condition: Any loss or any potentia*IIoss of Containment EAL:
FU1.1 Unusual Event Any loss or any potential loss of Containment (Table F-1)
Mode Applicability:
1 - Power Operations, 2 - Startup, 3 - Hot Standby, 4 - Hot Shutdown NEI 99 ..01 Basis:
None IPEC Basi:;:
Fuel Clad, RCS and Containment comprise the fission product barriers. Table F-1 (Attachment
- 2) lists the fission product barrier thresholds, bases and references.
Fuel Clad and RCS barriers are weighted more heavily than the Containment barrier. Unlike the Fuel Clad and RCS barriers, the loss of either of which res_ults ir, an Alert (EAL FA 1.1 ), loss
- of the Containment barrier in and of itself does not result in the relocation of radioactive materials or the potential for degradation of core cooling capability. However, loss or potential loss of the Containment barrier in combination with the loss or potential loss of either the Fuel Clad or RCS barrier results in declaration of a Site Area Emergency under EAL FS1 .1.
IPEC Basis Reference(s):
None
IPEC NON-QUA LITY EMERG ENCY RELATED IP-EP-A D13 Revision 22 PLAN PROCEDURE ADMINIS TRATIVE --------~-------,----1 PROCED URES REFERENCE USE Page 243 of 309 Attachm ent 1 - Emergen cy Action Level Bases Category: Fission Product Barrier Degrada tion Subcategory: N/A Initiating Condition: Any loss or any potential loss of either Fuel Clad or RCS EAL:
FA1.1 Alert Any loss or any potential loss of either Fuel Clad or RCS (Table F-1)
Mode Applicability:
1 - Power Operatio ns, 2 - Startup, 3 - Hot Standby, 4 - Hot Shutdow n NEI 99-01 Basis:
None IPEC Basis:
Fuel Clad, RCS and Containm ent comprise the fission product barriers. Tabie F-1 (Attachm
~
ent
- 2) lists the fission product barrier thresholds, bases and references.
At the A.iert classification ievel, Fuel Ciad and RCS barriers are weighted more l1eavily than the Containm ent bc1rrier. Unlike the Containm ent barrier, loss or potential loss of either the Fuel Clad or RCS barrier may result in the relocation of radioactive materials or degrada tion of core cooling capabilit y. Note that the loss or potential loss of Containm ent barrier in combina tion with loss or potential loss of either Fuel Clad or RCS barrier results in declarati on of a Site Area Emergen cy under EAL FS1.
IPEC Basis Reference(s):
None
IPEC NON-QUA LITY EMERG ENCY RELATED IP-EP-A D13 Revision 22 PLAN PROCEDURE ADMINIS TRATIVE i-------r--~--1------.----1 PROCED URES REFERENCE USE Page 244 of 309 Attachm ent 1 - Emergency Action Level Bases Category: Fission Product Barrier Degradation Subcategory: N/A Initiating Condition: Loss or potential loss of any two barriers EAL:
FS1.1 Site Area Emergency Loss or potential loss of any two barriers (Table F-1)
Mode Applicability:
1 - Power Operations, 2 - Startup, 3 - Hot Standby, 4 - Hot Shutdow n NEI 99-01 Basis:
None ?
IPEC Basis:
Fuel Clad, RCS and Containm ent comprise the fission product barriers. Table F-1 (Attachm ent
- 2) lists the fission product barrier thresho:ds. bases and references.
At the Site Area Emergen cy classificdtton levei; each barrier is weighted equally. A Site Area Emergen cy is therefore appropriate for any combination of the following conditions:
e One barrier loss and a second bairier less (i.e., loss - loss)
- One barrier loss and a second barrier potential loss (i.e., loss - potentiai loss)*
- One barrier potential loss and a second barrier potential loss (i.e., potential loss -
potential loss)
At the Site Area Emergen cy classification level, the ability to dynamic ally assess the proximity of present conditions with respect to the threshold for a General Emergen cy is important. For example , the existence of Fuel Clad and RCS Barrier loss threshold s in addition to offsite dose assessm ents would require continual assessments of radioactive inventory and Containm ent integrity in anticipation of reaching a ,General Emergency classification. Alternatively, if both Fuel Clad and RCS potential loss threshold s existed, the Emergen cy Director would have greater assurance that escalation to a General Emergency is less imminent.
IPEC Basis Reference(s):
None
\
IPEC NON-QUA LITY EMERG ENCY RELATED IP-EP-AD13 Revision 22 PLAN PROCEDURE I ADMINISTRATIVE 1--- ----- -~-- -+-- -~-- ---1 PROCEDURES REFERENCE USE Page 245 of 309 Attachment 1 - Emergency Action Level Bases Category: Fission Product Barrier Degradation Subcategory: NIA Initiating Condition: Loss of any two barriers and loss or potential loss of third barrier EAL:
FG1 .1 General Emergency Loss of any two barriers AND Loss or potential loss of third barrier (Table F-1)
Mode Applicability:
1 - Power Operations, 2 - Startup, 3 - Hot Standby, 4 - Hot Shutdown NEI 99-01 Basis:
None IPEC Basis:
Fuel Clad, RCS and Containment comprise the fission product barriers. Table F-1 (Attachment
- 2) lists the fission product barrier thresholds, bases and references.
At the General Emergen cy classification level each barrier is weighted equally. A General Emergency is therefore appropriate for any combination of the following conditions:
- Loss of Fuel Clad, RCS and Containment barriers
- Loss of Fuel Clad and RCS barriers with potential loss of Containment barrier
~-
- Loss of RCS and Containment barriers with potential loss of Fuel Clad barrier
- Loss of Fuel Clad and Containment barriers with potential loss of RCS barrier IPEC Basis Reference(s):
None
IPEC NON-QUA LITY EMERG ENCY RELATED IP-EP-AD13 Revision 22 PLAN PROCEDURE ADMINISTRATIVE i - - - - - - - - - - - t - - - - . - - - - ' - - - - - - - . - - - -
I PROCEDURES REFERENCE USE Page 246 of 309 Attachm ent 2 - Fission Product Barrier Loss/Potential Loss Matrix and Bases Introduction Table F-1 lists the threshold conditions that define the Loss and Potential Loss of the three fission product barriers (Fuel Clad, Reactor Coolant System, and Containment). The table is structured so that each of the three barriers occupies adjacent columns. Each fission product barrier column is further divided into two columns; one for Loss thresholds and one for Potential Loss thresholds.
The first column of the table (to the left of the Fuel Clad Loss column) lists the categories (types) of fission product barrier thresholds. The fission product barrier categories are:
A. CSFST B. Core Exit T/Cs C. Radiation D. Inventory E. Other F. Judgme nt Each category occupies a row in Table F-1 thus forming a matrix defined by the categories.
The intersection of each row with each Loss/Potential Loss column forms a cell in which one or more fission product barrier thresholds appear. If NEI 99-01 does not define a threshold for a barrier Loss/Potential Loss, the word "None" is entered in the cell.
Thresholds are assigned sequential numbers within each Loss and Potential Loss column beginning with number one. In this manner, a threshold can be identified by its category title and number. For example, the first Fuel Clad barrier Loss in Category A would be assigned "FC Loss A.1," the third Containment barrier Potential Loss would be assigned "CMNT P-Loss B.3," etc.
IPEC NON-QUAL ITY EMERGE NCY RELATED IP-EP-AD13 Revision 22 PLAN PROCEDURE ADMINISTRATIVE--------~------~
PROCEDURES REFERENCE USE Page 247 of 309 Attachment 2 - Fission Product Barrier Loss/Potential Loss Matrix and Bases If a cell in Table F-1 contains, more than one numbered threshold, each of the numbered thresholds, if exceeded, signifies a Loss or Potential Loss of the barrier. It is not necessary to exceed all of the thresholds in a category before declaring a barrier Loss/Potential Loss.
Subdivision of Table F-1 by category facilitates association of plant conditions to the applicable fission product barrier Loss and Potential Loss thresholds. This structure promotes a systematic approach to assessing the classification status of the fission product barriers.
When equipped with knowledge of plant conditions related to the fission product barriers, the EAL-user first scans down the category column of Table F-1, locates the likely category and then reads across the fission product barrier Loss and Potential Loss thresholds in that category to determine if a threshold has been exceeded. If a threshold has not been exceeded, the EAL-user proceeds to the next likely category and continues review of the thresholds in the new category If the EAL-user determines that any threshoid has been exceeded, by definition, the barrier is lost or potentially lost - even if multiple thresholds in the same barrier column are exceeded, only that one barrier is lost or potentially lost. The EAL-user must examine each of the three fission product barriers to determine if other barrier thresholds in the category are lost or potentially lost. For example, if containment radiation is sufficiently high, a Loss of the Fuel Clad and RCS barriers and a Potential Loss of the Containment barrier can occur. Barrier Losses and Potential Losses are then applied to the algorithms given in EALs FG1 .1, FS 1.1, FA1 .1 and FU1 .1 to determine the appropriate emergency classification.
In the remainder of this Attachment, the Fuel Clad barrier threshold bases appear first, followed by the RCS barrier and finally the Containment barrier threshold bases. In each barrier, the bases are given according category Loss followed by category Potential Loss beginning with Category A, then 8, ... ,E.
e~Entergy IPEC EMERGENCY NON-QUALITY RELATED IP-EP-AD13 Revision 22 PLAN PROCEDURE ADMINISTRATIVE PROCEDURES REFERENCE USE Page l 248
! of I 309 Attachment 2 - Fission Product Barrier Loss/Potential Loss Matrix and Bases Loss P Potential Loss Loss Potential Loss Loss P Potential Loss A.CSFST Core-Cooling RED entry conditions met P: 1 Core Cooling* ORANGE entry conditions met h11Eortt\ -
Gli .
RED entry ccn:iil~ns nu-?t p 1. Containment - RED entry c.onditions met
, OR J--l?dl 51111.
- l?E'IJ !!1! 1.f'f (Qfltfi'.~J4I~
' !",':~i~:! ~~~n~~~at 11,et ;;tO!J 11.::at srr1'.l 1::. reoain:d
- sink is required
- [Uflll~)> 700"F
- [Uull JJ > 715'F l AND 1 Core axil TCs not lowering within 15 minutes after l restoration procedure entry p 3. C~~;xit TCs /Ullil i!j > 700"F [Ur,ii 3 j > 715'F
- R';;;ii iUfui 2) < 41% !unit 3J <: 33% w/ no RCPs Care exit TCs not loweling or RVLIS not rising within 15 minutes alter restoration pnx:edure entry C.Radlatlon 3. Containment mdiation monitor R-25 or R-26
- 1. 1Ullli2J R-41 > 1.2E*5 µCVcc or p4 I
Contafnment radiation monitor R-25 or R-26
> 68Rlhr
> 17 Rlhr R-42 > 1.0E-2 uCilcc
~J-~1 ;il.?E-fi
µCiir:" or R-12 > 5_VE*2 µCiic,.: I 1-----~----------+-----------+--------*----~--------*-----11----- ------
'I
- - - - - - - - ' f' - - - - - - - - - - - - - - - - - - - 1 D.lnvantory 03, RVLIS 2. RCS leak nue *-.~.M:t<i~.I11, a O 2. RCS ieuk r~te 1n.!jr;4111d 911:.nl~r l A Coo1;1;nr,1eni pre5sure nse foUowad by a rapid Containment pressure > 47 psig and rising
- IU111t;1J<41% ktss of RCS ~ub:.>olif\i;J u.an e7 grim une*plaIned drop in Containment pressure
~ {Urnl 31 < 33% (< Tan!o F*~:
1 with no RCPs runnmg ,.
Conlainmenl hydrogen concentration~ 4%
Conta,nrnent pre..'t.Sure or sump level response not cori:a1sttml with LOCA conditions
- 3. Rupluied SG re:;:,11lts in ar* Containment pressure > Phase B Isolation s)Qnal ECCS (SI) actuation selpolnt following LOCA
- 4. f-Jrimary-!o-secondary leak rate > 1O gpm operating as designed
,\ND Unisolable steam release from affected SG to lhe environment E.Other 4. Prima,y coolant activily >
5, lnabili!y to lsoJate all v._;tlves In any one line 300 ~Cl/gm 1-131 dose AND C{luiw:ilont Direct downstream pathway to the cnlo'ironment e:itlsts after conlainmf'.11t 1solalion s)Qtlal F. Judgment 5. Any condition in the opinion t] 4- Any condition in the of the Emergency Director : opmion of the Emergency Any condition m the npini<m of the Emergency Direclor p 3. Any r.oodiUon in lhe aplnkm of tht: Emer:-1e.nc:y Oireclor
- 6. Any rond1t1on in lhe opinkm of lhe Emergency tJ 8. Any condllion in the opinion ol lhe Eme,gency 1 Director that indicales loss of the Containment :, Dlreclar lhal indicates polcntial loss al the that mdk:atcs loss or the I Director lhal indicates thal indicates ioss of t.'le lhdl blOiCalliS potonunt loss barrier Fuel Clod billrter l potenl.ial loss of the Fuel Containment barrier RCS barrier of u,e RCS ~~mer 1
- Clad barrier I
- . .... ********----**' *-*** ,~---. - - *- - .-.. -**.
IPEC NON-QUALITY EMERGENCY RELATED IP-EP-AD13 Revision 22 PLAN PROCEDURE ADMINISTRATIVE i - - - - - - - - - - - - , - - - - - - - . - - -
PROCEDURES REFERENCE USE Page 249 of 309 Attachment 2 - Fission Product Barrier Loss/Potential Loss Matrix and Bases Barrier: Fuel Clad Category: A. CSFST Degradation Threat: Loss Threshold:
- 1. Core Cooling - RED entry conditions met NEI 99*01 Basis:
Core Cooling - RED' indicates significant superhealing and core uncovery and is considered to indicate loss of the Fuel C!ad Barrier.
IPEC Basis:
Critical Safety Function Status Tree (CSFST) Cor,-3 Cooling-RED path is entered if either (ref.
1, 2):
e Core exit TCs ~ to 1,200°F, or
- Core exit TCs ~ 700 (715) °F with reduced RCS sub cooling margin, no RCPs are running, and Unit 2 Natural Circulation range RVLIS is~ to 41 % (Unit 3 RVLIS Full Range~ 33%).
Either set of conditions indicates significant core exit superheating and core uncovery. This is considered a loss of the Fuel Clad barrier.
IPEC Basis Reference(s):
- 1. 2-F-0.2 Core Cooling
- 2. 3-F-0.2 Core Cooling
IPEC NON-QUAL ITY
~IJitllt<ltgjf/ ~~~GEN CY RELATED IP-EP-AD 13 Revision 22 PROCEDURE ADMINIST RATIVE i----------t---,-----+----r---i PROCEDU RES REFERENCE USE Page 250 of 309 Attachmen t 2 - Fission Product Barrier Loss/Potential Loss Matrix and Bases Barrier: Fuel Clad Category: A. CSFST Degradation Threat: Potential Loss Threshold:
- 1. Core Cooling - ORANGE entry conditions met OR Heat Sink - RED entry conditions met and heat sink is required NEI 99~01 Basis~
Core Cooling - ORANGE indicates sub-cooling has been lost and that some clad damage may occur.
Heat Sink - RED when heat sink- :s required indicates the ultimate heat sink function is under extreme challenge.
IPEC Basis:
Unit 2 Critical Safety Function Status Tree (CSFST) Core Cooling-ORANGE path is entered if core exit thermocou ples (TCs) are?: 700°F with reduced RCS SCM, and any of the following (ref.
1):
11 No RCPs are running and either: core exit TCs are ?: to 700°F and RVLIS nat. circ.
range is > 41 %, or core exit TCs are < 700°F but RVLIS full range is ::. 41 %.
- At least one RCP is running and Reactor Vessel water level is ::. RVLIS running range readings corresponding to TAF.
IPEC NON-QUALITY EMERGENCY RELATED IP-EP-AD13 Revision 22 PLAN PROCEDURE ADMINISTRATIVE 1---------1--------,----1---------.------1 PROCEDURES REFERENCE USE Page 251 of 309 Attachment 2 - Fission Product Barrier Loss/Potential Loss Matrix and Bases These conditions indicate sub-cooling has been lost and that some fuel clad damage may potentially occur.
Indication that heat removal is extremely challenged is manifested by entry conditions to CSFST Heat Sink-RED path (ref. 3). CSFST Heat Sink-RED path is entered if all SG NR LVLs are::, 10% [27%] and total FW flow is::, to 400 gpm. The combination of these conditions when heat sink is required indicates the ultimate heat sink function is under extreme challenge. This condition addresses loss of functions required for hot shutdown with the reactor at pressure and temperature and thus is a challenge of the Fuel Clad barrier.
Unit 3 Critical Safety Function Status Tree (CSFST) Core Cooling-ORANGE path is entered if core exit t11ermocoupies (TCs) are:::. 7*I5°F with reduced RCS SCM, and any of the following (ref.
2):
33%, or core exit TCs < 700°F but RVLIS full range:::. 33%.
11 At least one RCP is running and Reactor Vessel water level is s RVLIS dynamic head range readings corresponding to TAF.
These conditions indicate sub-cool\ng has been lost and that some fuel clad damage may potentially occur.
Indication that heat removal is extremely challenged is manifested by entry conditions to CSFST Heat Sink-RED path (ref. 4). CSFST Heat Sink-RED path is entered if all SG NR LVLs s
are ::, 9% [14%] and total FW flow is to 365 gpm. The combination of these conditions when heat sink is required indicates the ultimate heat sink function is under extreme challenge. This condition addresses loss of functions required for hot shutdown with the reactor at pressure and temperature and thus is a challenge of the Fuel Clad barrier.
IPEC NON-QU ALITY EMERGENCY RELATED IP-EP-AD13 Revision 22 PLAN PROCEDURE ADMINISTRATIVE - - - - - - - - ~ - - - - - ~ - -
PROCEDURES REFERENCE USE Page 252 of 309 Attachment 2 - Fission Product Barrier Loss/Potential Loss Matrix and Bases IPEC Basis Reference(s):
- 1. 2-F-0.2 Core Cooling
- 2. 3-F-0.2 Core Cooling
- 3. 2.,.F-0.3 Heat Sink
- 4. 3-F-0.3 Heat Sink
IPEC NON-QUALITY EMERGENCY RELATED IP-EP-AD13 Revision 22 PLAN PROCEDURE ADMINISTRATIVE t - - - - - - - t - - - ~ - - - - - - ~ - - - - - 1 PROCEDURES REFERENCE USE Page 253 of 309 Attachment 2 - Fission Product Barrier Loss/Potential Loss Matrix and Bases Barrier: Fuel Clad Category: B. Core Exit TCs Degradation Threat: Loss Threshold:
I 2. Core exit TCs > 1,200°F NE! 99-01 Basis:
Core exit TCs > 1 ,200°F corresponds to significant superheating of the coolant.
IPEC Basis:
This indication of inadequate core cooiing requires prompt operator action. Inadequate core cooling is caused by a substantial los~ of primary coolant resulting in a partially or fully uncovered core. Without adequate heat removal, the core decay energy will cause the fuel temperatures to increase. Severe fuel darnage will occur unless core cooling is promptly restored.
IPEC Basis Reference(s):
- 1. 2-F-0.2 Core Cooling
- 2. 3-F-0.2 Core Cooling
- 3. 2-FR-C.1 Response to Inadequate Core Cooling
- 4. 3-FR-C.1 Response to Inadequate Core Cooling
IPEC NON-QUALITY EMERGENC Y RELATED IP-EP-AD13 Revision 22 PLAN PROCEDURE ADMINISTR ATIVE 1------ --+---~ ------- ~------ !
PROCEDUR ES REFERENCE USE Page 254 of 309 Attachment 2 - Fission Product Barrier Loss/Potential Loss Matrix and Bases Barrier: Fuel Clad*
Category: B. Core Exit TCs Degradation Threat: Potential Loss Threshold:
Core Exit TCs > 700 °F (715 °F) correspond to loss of sub-cooling.
IPEC Basis:
Tilis indication of degraded core cooling requires prompt operator action. Degraded core cooling is caused by a substantial loss of primary coolant resulting in a partially or fully uncovered core. Without adequate heat removal, the core decay energy will cause the fuel temperature s to increase. Significant fuel damage will occur unless core cooling is promptly restored.
IPEC Basis Reference{s):
- 1. 2-F-0.2 Core Cooling
- 2. 3-F-0.2 Core Cooling
- 3. 2-FR-C.1 Response to Inadequate Core Cooling
- 4. 3-FR-C.1 Response to Inadequate Core Cooling
IPEC NON-QUALITY EMERGENCY RELATED ,IP-EP-AD13 Revision 22 PLAN PROCEDURE ADMINISTRATIVE i-------------t----,----+-----.,---
PROCEDURES REFERENCE USE Page 255 of 309 Attachment 2 - Fission Product Barrier Loss/Potential Loss Matrix and Bases Barrier: Fuel Clad Category: C. Radiation Degradation Threat: Loss Threshold:
i 3. Containment radiation monitor R-25 or R-26 > 17 R/hr.
NEI 99-01 Basis:
The specified value indicates the release of reactor coolant, with elevated activity indicative of fuel damage, into the containment.
Reactor coolant concentrations of this magnitude are several times larger than the maximum concentrations (including iodine spiking) allowed within technical specifications and are therefore indicative of fuel damage.
This value is higher than that specified for RCS barrier Loss threshold #1 . Thus, this threshold indicates a loss of both the Fuel Clad barrier and RCS barrier that appropriately escalates the emergency classification level to a Site Area Emergency.
IPEC Basis:
NOTE: At Unit 3 radiation monitors R-25 and R-26 are susceptible to Temperature Induced Current which could cause erroneous readings for the first 3 minutes of an event with a large temperature change in the VC. R-25 and R-26 readings should be validated against other radiation monitors, R-2 and R-7, for erroneous readings during this timeframe.
IPEC NON-QUAL ITY EMERGE NCY RELATED IP-EP-AD13 Revision 22 PLAN .PROCEDURE ADMINISTRATIVE 1 - - - - - - - - - - . - - - - + - - - - . . . - - - - - - - - 1 PROCEDURES REFERENCE USE Page 256 of 309 Attachmen t 2 - Fission Product Barrier Loss/Potential Loss Matrix and Bases The 17 R/hr. reading is a value that indicates the release of reactor coolant, with elevated activity indicative of fuel damage, into the containment. The reading is calculated assuming the instantaneous release and dispersal of the reactor coolant noble gas and iodine inventory associated with a concentration of 300 µCi/gm dose equivalent 1-131 into the containment atmosphere. Reactor coolant concentrations of this magnitude are several times larger than the maximum concentrations allowed within technical specifications and are therefore i
indicative of fuel damage (approximately 5 % clad failure depending on core inventory and I RCS volume).
IPEC Basis Reference(s):
- 1. EAL Technical Basis Documentation for R-25 w1d R-26, Containment Radiation Monitors, Calculation by Dennis Quinn, dated 11/2010
IPEC NON-QUAL ITY EMERGENCY RELATED IP-EP-AD13 Revision 22 PLAN PROCEDURE ADMINISTRATIVE i--------+-----,-----1---------r------f PROCEDURES REFERENCE USE Page 257 of 309 Attachment 2 - Fission Product Barrier Loss/Potential Loss Matrix and Bases Barrier: Fuel Clad Category: C. Radiation Degradation Threat: Potential Loss Threshold:
None
IPEC NON-QUAL ITY EMERGE NCY RELATED IP-EP-AD13 Revision 22 PLAN PROCEDURE ADMINISTRATIVE 1--------1---------,----1------.-----4 PROCEDURES REFERENCE USE Page 258 of 309 Attachment 2 - Fission Product Barrier Loss/Potential Loss Matrix and Bases Barrier: Fuel Clad Category: D. Inventory Degradation Threat: Loss Threshold:
IPEC NON-QUALITY EMERGENCY RELATED IP-EP-AD13 Revision 22 PLAN PROCEDURE ADMINISTRATIVE 1------ -----~ --+--- ------- 1 PROCEDURES REFERENCE USE Page 259 of 309 Attachment 2 - Fission Product Barrier Loss/Potential Loss Matrix and Bases Barrier: Fuel Clad Category: D. Inventory Degradation Threat: Potential Loss Threshold:
3:. RVLIS [Unit2] < 41 % [Unit 3] < 33% with no RCPs running NEI 99-01 Basis:
The specified value for the potential loss threshold corresponds to the top of the active fuel.
IPEC Basis:
The reactor vessel water level used ln this EAL is the value corresponds to the level which is used in CSFSTs to indicate challenge to core cooling and loss of the fuel clad barrier. This is the minimum water ieve! to assure core coolino without fwiher degradation of the clad. Severe V I core damage can occur and reactor coolant system pressure boundary integrity may not be assured if reactor vessel water level is not maintained above that corresponding to RVLIS at 41 % [33%] wl no RCPs running (Unit 2 Dynamic range: < 44% w/ 4 RCPs, < 30% w/ 3 RCPs,
< 20% w/ 2 RCPs, < 13% w/ 1 RCPs). RVLIS dynamic range indications are not utilized in this EAL since the RCPs would not be running under conditions where vessel level is approaching the inadequate core cooling condition.
IPEC Basis Reference(s):
- 1. 2-FR-C.1 Response to Inadequate Core Cooling
- 2. 3-FR-C.1 Response to Inadequate Core Cooling
IPEC NON-QUAL ITY EMERGE NCY RELATED IP-EP-AD 13 Revision 22 PLAN PROCEDURE ADMINIST RATIVE i - - - - - - - - - - - ~ - - - - + - - - ~ - - - 1 PROCEDU RES REFERENCE USE Page 260 of 309 Attachmen t 2 - Fission Product Barrier Loss/Potential Loss Matrix and Bases Barrier: Fuel Clad Category: E. Other Degradat ion Threat: Loss Threshold :
- 4. Primary coolant activity> 300 µCi/gm 1-131 dose equivalent NEI 99-01 Basis:
The specified value corresponds to 300 pCi/gm 1-131 equivalent. Assessme nt by the EAL Task Force indicates that tr,is amount of coolant activity is we!i \.1bove that expected for iodine spikes and correspon ds to less than 5% fuel clad damage. This amount of radioactivity indicates significant clad damag-a and thus the Fuel Clad Barrier is c0nsidered lost.
IPEC Basis:
None IPEC Basis Reference{s):.
- 1. NE! 99-01 Revision 5
IPEC NON-QU ALITY EMERGENCY RELATED IP-EP-AD13 Revision 22 PLAN PROCEDURE ADMINISTRATIVE 1-------1------,-----+-------,-
PROCEDURES REFERENCE USE Page 261 of I 309 Attachment 2 - Fission Product Barrier Loss/Potential Loss Matrix and Bases Barrier: Fuel Clad Category: E. Other Degradation Threat: Potential Loss Threshold:
INone
IPEC NON-QUAL ITY EMERGE NCY RELATED IP-EP-AD 13 Revision 22 PLAN PROCEDURE ADMINIST RATIVE 1 - - - - - - - - + - - - - - . - - - - + - - - - - . - - - - - - - 1 PROCEDU RES REFERENCE USE Page 262 of 309 Attachmen t 2 - Fission Product Barrier Loss/Pote ntial Loss Matrix and Bases Barrier: Fuel Clad Category: F. Judgment Degradation Threat: Loss Threshold:
- 5. Any condition in the opinion of the Emergenc y Director that indicates loss of the Fuel Clad barrier NEI 99-01 Basis:
This threshold addresses any other factors that are to be used by the Emergenc y Director in determinin g whether the Fu*?! C:lad barriei is !ost. !n addition, the- inabiiity to monitor the barrier should also be considE~red as a factor in Emergenc y Director judgment that the banier may be considere d lost.
IPEC Basis:
The Em~rgenc y Directer judgment threshold zddresses any other factors relevant to determinin g if the Fue! Clad barrier is lost. Such a detenTiinatkm should include imminent barrier degradatio n, barrier monitoring capability and dominant accident sequences .
- Imminent barrier degradatio n exists if the degradatio n will likely occur within two hours based on a projection of current safety system performan ce. The term "imminent " refers to recognition of the inability to reach safety acceptanc e criteria before completion of all checks.
e Barrier monitoring capability is decreased if there is a loss or lack of reliable indicators.
This assessme nt should include instrument ation operability concerns, readings from portable instrument ation and considerat ion of offsite monitoring results.
- Dominant accident sequences lead to degradatio n of all fission product barriers and likely entry to the EOPs. The Emergenc y Director should be mindful of the Loss of AC power (Station Blackout) and A TWS EALs to assure timely emergenc y classificat ion declaratio ns.
IPEC Basis Reference{s): None
IPEC NON-QUALITY EMERG ENCY RELATED IP-EP-A D13 Revision 22 PLAN PROCEDURE ADMINISTRATIVE 1--- ----- .---- ---.- ---1 ----, ----- i PROCEDURES REFERENCE USE Page 263 of 309 Attachment 2 - Fission Product Barrier Loss/Potential Loss Matrix and Bases Barrier: Fuel Clad Category: F. Judgme nt Degradation Threat: Potential Loss Threshold:
- 4. Any condition in the opinion of the Emergency Director that indicates potentia l loss of the Fuel Clad barrier NEI 99-01 Basis:
This threshold addresses any otlier factors that are to be used by the Emerge ncy Director in determining whether the Fuel Clad barrier ls potenUa!ly lost. ln addition, the inability to monitor the barrier should also be considered as a foctor in Emergency Director judgme nt that the barrier may be considered potentia!ly lost.
IPEC Basis:
The Emergency Director judgme nt threshold addresses any other factors relevan t to determining if the Fuel Clad barrier is potentially lost. Such a determination should include imminent barrier degradation, barrier monitoring capability and domina nt acciden t sequences.
- Imminent barrier degradation exists if the degradation* will likely ocbur within two hours based on a projection of current safety system performance. The term "imminent" refers to recognition of the inability to reach safety acceptance criteria before completion of all checks. _
- Barrier monitoring capability is decreased if there is a loss or lack of reliable indicato rs.
This assessment should include instrumentation operability concerns, readings from portable instrumentation and consideration of offsite monitoring results.
,)
IPEC NON-QUAL ITY EMERGENCY RELATED IP-EP-AD13 Revision 22
- PLAN PROCEDURE ADMINISTRATIVE 1---- ----- ----- 1---- -~--- 1 PROCEDURES REFERENCE USE Page 264 of 309 Attachment 2 - Fission Product Barrier Loss/Potential Loss Matrix and Bases
- Dominant accident sequences lead to degradation of all fission product barriers and likely entry to the EOPs. The Emergency Director should be mindful of the Loss of AC power (Station Blackout) and ATWS EALs to assure timely emergency classification declarations.
IPEC Basis Reference(s):
None
./
IPEC NON-QUALITY EMERGENCY RELATED IP-EP-AD13 Revision 22 PLAN PROCEDURE ADMINISTRATIVE f--------+------1---~-~
PROCEDURES REFERENCE USE Page 265 of 309 Attachment 2 - Fission Product Barrier Loss/Potential Loss Matrix and Bases Barrier: Reactor Coolant System Category: A. CSFST Degradation Threat: Loss Threshold:
None
IPEC NON-QUAL ITY EMERGE NCY RELATED IP-EP-AD 13 Revision 22 PLAN PROCEDURE ADMINIST RATIVE ------+-----r----+------,------1 PROCEDU RES REFERENCE USE Page 266 of 309 Attachmen t 2 - Fission P~oduct Barrier Loss/Potential Loss Matrix and Bases Barrier: Reactor Coolant System Category: A.CSFST Degradation Threat: Potential Loss Threshold:
- 1. Integrity-R ED entry conditions met OR Heat Sink-RED entry conditions met and heat sink is required NEI 99-01 Basis:
RCS Integrity - Red indicates an e)l1reme challenge to the safety *function derived from appropriat e instrumen t readings.
Heat Sink - Red when r*1eat sink is required indicates the ultimate heat sink function is under extreme challenge.
IPEC Basis:
Unit2 Critical Safety Function Status Tree (CSFST) Integrity-Red path is entered if both of the following (ref. 1 ):
- Temperat ure decrease in any RCS cold leg~ 100 F/hr.
a Any RCS pressure-cold leg temperature point to the right of Limit A (Figure F-04-1 ).
The combinatio n of these conditions indicates the RCS barrier is under significant challenge.
IPEC NON-QUALITY EMERGENCY RELATED IP-EP-AD13 Revision 22 PLAN PROCEDURE ADMINISTRATIVE - - - - - - - + - - - - - - - + - - - - ~ - - - 1 PROCEDURES REFERENCE USE Page 267 of 309 Attachment 2 - Fission Product Barrier Loss/Potential Loss Matrix and Bases Indication that heat removal is extremely challenged is manifested by entry conditions to CSFST Heat Sink-RED path (ref. 3). CSFST Heat Sink-RED path is entered if all SG NR LVLs are ~ 10% [27%] and total FW flow is ~ to 400 gpm. The combination of these conditions when heat sink is required indicates the ultimate heat sink function is under extreme challenge.
This condition addresses loss of functions required for hot shutdown with the reactor at pressure and temperature and thus is a challenge of the Fuel Clad barrier.
Unit 3 Critical Safety Function Status Tree (CSFST) Integrity-Red path is entered if both of the following (ref. 2):
- Temperature decrease in any RCS ccld leg .:: 100 F/hr.
The combination of these conditions ind!cates rhe !~CS barrier is under significant clla!lenge.
Indication that heat removal is extremely challenged is manifested by entry conditions to CSFST Heat Sink-RED path (ref. 4 ). CSFST Heat Sink-RED path is entered if ail SG NR L VLs are~ 9% [14:-i/o] and total FW flow is~ to 365 gpm. The combination of these conditions when heat sink is required indicates the ultimate heat sink function is under extreme challenge. This condition addresses loss of functions required for hot shutdown with the reactor at pressure and temperature and thus is a challenge of the Fuel Clad barrier.
IPEC Basis Reference(s):
- 1. 2-F-0.4 Integrity
- 2. 3-F-0.4 Integrity
- 3. 2-F-0.3 Heat Sink
- 4. 3-F-0.3 Heat Sink
IPEC NON-QUALITY EMERGENCY RELATED IP-EP-AD13 Revision 22 PLAN PROCEDURE ADMINISTRATIVE r - - - - - - - - + - - - - . - - - - - ~ - -
PROCEDURES REFERENCE USE Page j 268 of I 309 Attachment 2 - Fission Product Barrier Loss/Potential Loss Matrix and Bases Barrier: Reactor Coolant System Category: B. Core Exit TCs Degradation Threat: Loss Threshold:
INone
IPEC NON-QUALITY EMERGENCY RELATED IP-EP-AD13 Revision 22 PLAN PROCEDURE ADMINISTRATIV E 1---------+-------r----+---------r-------1 PROCEDURES REFERENCE USE Page 269 of 309 Attachment 2 - Fission Product Barrier Loss/Potential Loss Matrix and Bases Barrier: Reactor Coolant System Category: B. Core Exit TCs Degradation Threat: Potential Loss Threshold:
INone
IPEC NON-QUAL ITY EMERGE NCY RELATED IP-EP-AD13 Revision 22 PLAN PROCEDURE ADMINIST RATIVE 1 - - - - - - - - - - ~ - - l - - - - ~ - - - - l PROCEDURES REFERENCE USE Page 270 of 309 Attachmen t 2 - Fission Product Barrier Loss/Potential Loss Matrix and Bases Barrier: Reactor Coolant System Category: C. Radiation Degradation Threat: Loss Threshold:
- 1. [Unit 2] R-41 >1.25E-5 µCi/cc or R-42 > 1.0E-2 µCi/cc
[Unit 3] R-11 >1.25E-5 µCi/cc or R-12 > 5.0E-2 µCi/cc NEI 99-01 B.:isis:
The specified values indicate the release of r0ac.:tar c0olant to the containment.
This reading is less than that specified fc:r Fuei Ciad bar;ier threshold #3. Thus, this threshold would be indicative of a RCS leak oniy. if the rndigtion monitor reading increased to that specified by Fuel Clad barrier threshold, fuel damage would also be indicated.
IPEC Basis:
> 1.25E-5 µCi/cc on R-41 [11] OR> 1.0E-2 pCi/cc on R-42 [Unit 2] or> 5.0E-2 µCi/cc on R-12
[Unit 3] due to RCS leakage indicates the release of reactor coolant to the containment. The indication was derived assuming an increase in RCS leak rate from 1 gpm to 75 gpm over a one hour period and dispersal of the reactor coolant noble gas and iodine inventory associated with FSAR (1% defects) into the containment atmosphere. This EAL is indicative of a RCS leak only. If R-25/R-26 readings increase to that specified by fuel clad loss indicator #3, significant fuel damage would also be indicated ..
IPEC Basis Reference(s):
- 1. EAL Technical Basis Docum~ntation for R-11, R-12, R-41 and R-42, Calculation by Dennis Quinn, dated 11/23/10
IPEC NON-QUA LITY EMERGENCY RELATED IP-EP-AD13 Revision 22 PLAN PROCEDURE ADMINISTRATIVE - - - - - - - - ~ - - - - - - -
PROCEDURES REFERENCE USE Page 271 of 309 Attachm ent 2 - Fission Product Barrier Loss/Potential Loss Matrix and Bases Barrier: Reactor Coolant System Category: C. Radiation Degradation Threat: Potential Loss Threshold:
INone
IPEC NON-QUAL ITY EMERGENCY RELATED IP-EP-AD13 Revision 22 PLAN PROCEDURE ADMINISTRATIVE 1 - - - - - - - - - - ~ - - - - - ~ - - - 1 PROCEDURES REFERENCE USE Page 272 of 309 Attachment 2 - Fission Product Barrier Loss/Potential Loss Matrix and Bases Barrier: Reactor Coolant System Category: D. Inventory Loss Degradation Threat Loss Threshold:
Table F-2 RCS Sub-cooling RCS Sub-cooling I
Pressure I
(OF) l----
(PSIG} li,....
Non*r,dverse Containment Adverse Containmen t IN I
I 0-400
'I i
t;:r>
-...).(.*. 83 I ;::: 401 -800 I 36 49 I
I C:
801 -- '1200 II 2*)*.-1 I 30 1201 - 2500 II 19 26 i
. --+---------- ---------
M
- :: < 1000 i 40 112 C: 1000-190 0 40 78
- > > 1900 40 63 NEI 99-01 Basis:
This threshold addresses conditions where leakage from the RCS is greater than available inventory control capacity such that a loss of sub-cooling has occurred. The loss of sub-cooling is the fundamental indication that the inventory control systems are inadequate in maintaining RCS pressure and inventory against the mass loss through the leak.
IPEC Basis:
IPEC NON-QUALITY EMERGENCY RELATED IP-EP-AD13 Revision 22 PLAN PROCEDURE ADMINISTRATIVE i------- ------1 ---~--- -------1 PROCEDURES REFERENCE USE Page 273 of 309 Attachment 2 - Fission Product Barrier Loss/Potential Loss Matrix and Bases 2[3]-F-0.2 Critical Safety Function Status Tree, Core Cooling, indicates that if sub-cooling margin based on core exit TCs is less than that specified in Table F-1 RCS Sub-cooling, a loss of RCS sub-cooling has occurred. The loss of sub-cooling is the fundamental indication that the inventory control systems are inadequate in maintaining RCS pressure and inventory against the mass loss through the leak. This threshold addresses conditions in which leakage from the RCS is greater than available inventory control capacity such that a loss of sub-cooling has occurred. 2[3]-AOP-Leak-1, Sudden Increase in RCS Leakage (ref. 2), provides a list of conditions that may be observed when excessive RCS leakage occurs and provides appropriate actions to prevent and mitigate the consequences of RCS leakage.
Following an uncomplicated reactor trip, sub-cooling margin should be greater than that specified in Table F-1 RCS Sub-cooling. Sub-cooling margin greater than the appiicable Table F-1 value ensures the fluid surroun.dlng the Gt..XG is sufficiently cooled and provides margin for reestablishing flow should sub-c'.:lollng dder,orate when SI flow is secured. The loss of sub-cooling is therefore the fundarnentai indicsUon that the inventory control systems are incapable of counteracting the mass loss through the leak in the RCS.
The loss of sub-cooling as a result of inability to establish RCS heat tr:insfer to the ultimate heat sink is indicative of Potential Losses of the Fuel Clad and RCS barriers.
IPEC Basis Reference(s):
- 1. 2-F-0.2 Core Cooling
- 2. 3-F-0.2 Core Cooling
- 3. 2-AOP-Leak-1, Sudden Increase in RCS Leakage
- 4. 3-AOP-Leak-1, Sudden Increase in RCS Leakage
IPEC NON-QUALITY EMERGENCY RELATED IP-EP-AD13 Revision 22 PLAN PROCEDURE ADMINISTRATIVE i---------1--------r----t------,-----1 PROCEDURES REFERENCE USE Page 274 of 309 Attachment 2 - Fission Product Barrier Loss/Potential Loss Matrix and Bases Barrier: Reactor Coolant System Category: D. Inventory Loss Degradation Threat: Loss Threshold:
This threshold addresses the full spectrum of Steam Generator (SG) tube rupture events in conjunction with containment bariier Loss thresholds. It addresses ruptured SG(s) for which the leakage is large enough to cause actuatlon of ECCS {Sl). This is consistent with the RCS leak rate barrier Potential Loss threshold.
This condition is described by entry into 2[3]--E-3 SGTR required by EOPs.
By itseif, this thresho:d wii! resu:t in the declaration of an .Alert. How6ver, if the SG is aiso faulted (i.e., two barriers failed), the declaration escalates to a Site Area Emergency per containment barrier Loss thresholds.
IPEC Basis:
In conjunction with Containment barrier Loss #3 and the Fuel Clad barrier thresholds, this threshold addresses the full spectrum of Steam Generator Tube Rupture (SGTR) events. To meet this threshold, the leakage must be large enough to require actuation of ECCS (SI).
ECCS (SI) actuation is caused by:
e Low-low pressurizer pressure
- High steam-line pressure differential between the steam generators
- High steam-line flow in two out of three steam lines, coincident with either low steam-line pressure or low-low T avg in two out of three loops
" High containment pressure
IPEC NON-QUALITY EMERGENCY RELATED IP-EP-AD13 Revision 22 PLAN PROCEDURE ADMINISTRATIVE 1 - - - - - - - - + - - - - - - - - - ~ - - - - - 1 PROCEDURES REFERENCE USE Page 275 of 309 Attachment 2 - Fission Product Barrier Loss/Potential Loss Matrix and Bases Technical Specifications Table 3.3.2-1 lists allowable values for Safety Injection actuation set-points.
IPEC Basis Reference(s):
- 1. 2-E-3 Steam Generator Tube Rupture
- 2. 3-E-3 Steam Generator Tube Rupture
- 3. Technical Specifications Table 3.3.2-1 Engineered Safety Feature Actuation Set point Instrumentation
IPEC NON-QUALITY EMERGENCY RELATED IP-EP-AD13 Revision 22 PLAN PROCEDURE ADMINISTRATIVE 1-----------+-------r-----+----,------1 PROCEDUR ES* REFERENCE USE Page 276 of 309 Attachment 2 - Fission Product Barrier Loss/Potential Loss Matrix and Bases Barrier: Reactor Coolant System Category: D. Inventory Degradation Threat: Potential Loss Threshold:
This threshold is based on the apparent inability to maintain normal liquid inventory within the Reactor Coolant System (RCS) by normai operation of the Chemical and Volume Control System which is considered to bE: the f;ovv rate equiva!ent to one charging pump discharging to the charging header. Isolating ietdown is a E,tandard abnormal operating procedure action and may prevent unnecessary classific2;tions when a non-RCS leakage path such as a CVCS leak exists. The intent of this conditinn is met if attr~mpts to isolate Letdrnnn are not successful.
Additional charging pumps being required is indicative of a substantial RCS leak.
IPEC Basis:
Primary system leakage above 87 gpm is based on the inability to maintain normal liquid inventory within the Reactor Coolant System (RCS) by normal operation of the Chemical and Volume Control System, which is considered one charging pump discharging to the charging header.
IPEC Basis Reference(s):
- 1. 2-AOP-LEAK-1 Sudden Increase in RCS Leakage
- 2. 3-AOP-LEAK-1 Sudden Increase in RCS Leakage
- 3. FSAR Table 9.2-2 eves Letdown Requirements
IPEC NON-QUAL ITY EMERGE NCY RELATED IP-EP-AD13 Revision 22 PLAN PROCEDURE ADMINISTRATIVE 1----- -----~ ----+ ------ ,----1 PROCEDURES REFERENCE USE Page 277 of 309 Attachment 2 - Fission Product Barrier Loss/Potential Loss Matrix and Bases Barrier: Reactor Coolant System Category: E. Other Degradation Threat: Loss Threshold:
INone
IPEC NON-QUALITY EMERGENC Y RELATED IP-EP-AD13 Revision 22 PLAN PROCEDURE ADMINISTRATIVE 1---------+-----,-----1-----,----1 PROCEDURES REFERENCE USE Page 278 of 309 Attachment 2 - Fission Product Barrier Loss/Potential Loss Matrix and Bases Barrier: Reactor Coolant System Category: E. Other Degradation Threat: Potential Loss Threshold:
INone
IPEC NON-QUAL ITY EMERGE NCY RELATED IP-EP-AD13 Revision 22 PLAN PROCEDURE ADMINISTRATIVE i----------i-----------,---1-----,------
-l PROCEDURES REFERENCE USE Page 279 of 309 Attachment 2 - Fission Product Barrier Loss/Potential Loss Matrix and Bases Barrier: Reactor Coolant System Category: F. Judgment Degradation Threat: Loss Threshold:
- 4. Any condition in the opinion of the Emergency Director that indicates loss of the RCS barrier NEI 99-01 Basis:
This threshold addresses any other factors that are to be used by the Emergency Director in determining whether the RCS b.arriE!r is lo:;,t. In addition, the inability to monitor the barrier should also be considered in thls threshold as a factor in Emergency Director judgment that the barrier may be considered lost.
IPEC Basis:
The Emergency Director judgment threshold addresses any other factors relevant to determining if the RCS barrier is lost. Such a determination should include imminent barrier degradation, barrier monitoring capability and dominant accident sequences.
- Imminent barrier degradation exists if the degradation will likely occur within two hours based on a projection of current safety system performance. The term "imminent" refers to the recognition of the inability to reach safety acceptance criteria before completion of all checks.
- Barrier monitoring capability is decreased if there is a loss or lack of reliable indicators.
This assessment should include instrumentation operability concerns, readings from portable instrumentation and consideration of offsite monitoring results.
IPEC NON-QUALITY EMERGENCY RELATED IP-EP-AD13 Revision 22 PLAN PROCEDURE ADMINISTRATIVE 1---------+---.-----+-----r----i PROCEDURES REFERENCE USE Page 280 of 309 Attachment 2- Fission Product Barrier Loss/Potential Loss Matrix and Bases
- Dominant accident sequences lead to degradation of all fission product barriers and likely entry to the EOPs. The Emergency Director should be mindful of the Loss of AC power (Station Blackout) and A TWS EALs to assure timely emergency classification declarations.
IPEC Basis Reference(s):
None
IPEC NON-QUALITY EMERGENC Y RELATED IP-EP-AD13 Revision 22 PLAN PROCEDURE ADMINISTRATIVE 1 - - - - - - - - + - - - - - - - - - ~ -
PROCEDURES REFERENCE USE Page 281 of 309 Attachment 2 - Fission Product Barrier Loss/Potential Loss Matrix and Bases Barrier: Reactor Coolant System Category: E. Judgment Degradation Threat: Potential Loss Threshold:
- 3. Any condition in the opinion of the Emergency Director that indicates potential loss of the RCS barrier NEI 99-01 Basis:
This threshold addresses any other f£1ct0rs that are to be used by the Emergency Director in determining whether the RCS barrier is poteiitially lost. In addition, the inability to monitor the barrier should also be considared in thls \hresho!d as a factor in Emergency Director judgment that the barrier may be considered potent:a!ly lost.
IPEC Basis:
The Emergency Director judgment threshold addresses any other factors relevant to determining if the RCS barrier is potentially lost. Such a determination should include imminent barrier degradation, barrier monitoring capability and dominant accident sequences.
e Imminent barrier degradation exists if the degradation will likely occur within two hours based on a projection of current safety system performance. The term "imminent" refers to the inability to reach final safety acceptance criteria before completing all checks.
(i Barrier monitoring capability is decreased if there is a loss or lack of reliable indicators.
This assessment should include instrumentation operability concerns, readings from portable instrumentation and consideration of offsite monitoring results.
IPEC NON-QUALITY EMERGENCY RELATED IP-EP-AD13 Revision 22 PLAN PROCEDURE ADMINISTRATIVE t - - - - - - - - - - ~ - - - - - ~ - - - - - i PROCEDURES REFERENCE USE Page 282 of 309 Attachment 2 - Fission Product Barrier Loss/Potential Loss Matrix and Bases
- Dominant accident sequences lead to degradation of all fission product barriers and likely entry to the EOPs. The Emergency Director should be mindful of the Loss of AC power (Station Blackout) and ATWS EALs to assure timely emergency classification declarations.
IPEC Basis Reference(s):
None
IPEC NON-QUA LITY EMERGENCY RELATED IP-EP-AD13 Revision 22 PLAN PROCEDURE ADMINISTRATIVE 1---------------,-------+-----.------1 PROCEDURES REFERENCE USE Page 283 of 309 Attachment 2 - Fission Product Barrier Loss/Potential Loss Matrix and Bases Barrier: Containment Category: A. CSFST Degradation Threat: Loss Threshold:
INone
IPEC NON-QUAL ITY EMERGE NCY RELATED IP-EP-AD 13 Revision 22 PLAN PROCEDURE ADMINIST RATIVE 1---------------r---t------,-----1 PROCEDU RES REFERENCE USE Page 284 of 309 Attachmen t 2 - Fission Product Barrier Loss/Potential Loss Matrix and Bases Barrier: Containme nt Category: A. CSFST Degradation Threat: Potential Loss Threshold:
- 1. Containme nt-RED entry conditions met NEI 99-01 Basis:
RED path indicates an extreme challenge to the safety function derived from appropria te instrumen t readings and/or samr:i!ing results, and thus represents a potential loss of containment.
Conditions leading to a containmer.t RED path resuit from RCS barrier and/or Fuel Clad Barrier Loss. Thus, this thresho1d is primarily a discriminator bet.JVeen Site Area Emergency and General Emergenc y representing a potential loss of the third barrier.
IPEC Basis:
RED path is entered based on exceeding containment design pressure of 47 psig (ref. 1 ). This pressure is well in excess of that expected from the design basis loss of coolant accident (ref.
1, 2, 3). This is indicative of a loss of both RCS and fuel clad boundaries in that it is not possible to reach this condition without also being in a Heat Sink-RED or Core Cooling-R ED CSFST. The source of energy must be the result of severe degradatio n of core cooling or loss of heat sink. Since containment pressures at or approaching design levels is also a potential loss of containment, this combination of conditions is expected to require the declaration of a General Emergency.
IPEC NON-QUALITY EMERGENCY RELATED IP-EP-AD13 Revision 22 PLAN PROCEDURE ADMINISTRATIVE 1--------t------r------1-----.----------1 PROCEDURES REFERENCE USE Page 285 of 309 Attachment 2 - Fission Product Barrier Loss/Potential Loss Matrix and Bases IPEC Basis Reference(s):
- 1. 2-F-0.5 Containment
- 2. 3-F-0.5 Containment
- 3. Unit 2 FSAR Section 5.1.1.1.5 Reactor Containment
- 4. Unit 3 FSAR Section 5.1.1.1 Principal Design Criteria
IPEC NON-QUAL ITY EMERGENCY RELATED IP-EP-AD13 Revision 22 PLAN PROCEDURE ADMINISTRATIVE -------+-----r------+-----,------1 PROCEDURES REFERENCE USE Page 286 of 309 Attachment 2 - Fission Product Barrier Loss/Potential Loss Matrix and Bases Barrier: Containment Category: B. Core Exit TCs Degradation Threat: Loss Threshold:
IPEC NON-QUALITY EMERGENC Y RELATED IP-EP-AD13 Revision 22 PLAN PROCEDURE ADMINISTRATIVE 1 - - - - - - - + - - - - ~ - - - - - ~ - 1 PROCEDURES REFERENCE USE Page 287 of 309 I I Attachment 2 - Fission Product Barrier Loss/Potential Loss Matrix and Bases Barrier: Containment Category: 8. Core Exit TCs Degradation Threat: Potential Loss Threshold:
- 2. Core exit TCs > 1200 ° F.
AND Core exit TCs not lowering within 15 min. of restoration procedure entry NEI 99-01 Basis:
The conditions in this threshoid represents an lmminent core melt sequence which, if not corrected, could lead tc ves:;;el fai!L:re and an 1;1creased potential for containment failure. In conjunction with the Core Cooling and RCS Leakage criteria in the Fuel and RCS barrier columns, this threshold would result in the declaration of a General Emergency -- loss of two barriers and the potential !oss of a third. If the function restoration procedures are ineffective, there is no "success" path.
The function restoration procedures are those emergency operating procedures that address the recovery of the core cooling critical safety functions. The procedure is considered effective if the temperature is decreasing.
Severe accident analyses (e.g., NUREG-1150) have concluded that function restoration procedures can arrest core degradation within the reactor vessel in a significant fraction of the core damage scenarios, and that the likelihood of containment failure is very small in these events. Given this, it is appropriate to provide a reasonable period to allow function restoration procedures to arrest the core melt sequence.
Whether or not the procedures will be effective should be apparent within 15 minutes. The Emergency Director should make the declaration as soon as it is determined that the procedures have been, or will be ineffective.
IPEC NON-QUA LITY EMERGENCY RELATED IP-EP-AD13 Revision 22 PLAN PROCEDURE ADMINISTRATIVE i---------i---------r----+-----r-~
PROCEDURES REFERENCE USE Page 288 of 309 Attachment 2 - Fission Product Barrier Loss/Potential Loss Matrix and Bases IPEC Basis:
This threshold indicates significant core exit superheating and core uncovery. If core exit thermocouple (TC) readings are greater than 1,200°F, Fuel Clad barrier is lost. Core exit TCs provide an indirect indication of fuel clad temperature by measuring the temperature of the primary coolant that leaves the core region. Although clad rupture due to high temperature is not expected for core exit TC readings less than the threshold, temperatures of this magnitude signal significant superheating of the reactor coolant and core uncovery. Events that result in core exit TC readings above the loss threshold are severe accidents and are a severe accident Management "Badly Damaged (60)" condition. The BD descriptor signifies possible core overheating to the point that c!ad ba:looning/col!apse may occur and portions of the core may have melted. It must also be assumed that the ioss of RCS inventory is a result of a loss of RCS barrier. These condltions, it not mitigated, wiil likely lead to core melt which will in turn result in a potential loss of containment.
iPEC Basis Reference(s):
- 1. 2-F-0.1 Core Cooling
- 2. 3-F-0.1 Core Cooling
- 3. 2-FR-C.1 Response to Inadequate Core Cooling
- 4. 3-FR-C.1 Response to Inadequate Core Cooling
IPEC NON-QUALITY EMERGENC Y RELATED IP-EP-AD13 Revision 22 PLAN PROCEDURE ADMINISTR ATIVE 1-------1-----,----+-----..-------1 PROCEDUR ES REFERENCE USE Page 289 of 309 Attachment 2 - Fission Product Barrier Loss/Potential Loss Matrix and Bases Barrier: Containment Category: B. Core Exit TCs Degradation Threat: Potential Loss Threshold:
- 3. Core exit TCs > [Unit 2] > 700 °F [Unit 3] > 715 °F.
AND RVLIS [Unit 2] <41 % [Unit 3] < 33% w/ no RCPs AND Core exit TCs not lowering or RVLIS not rising within 15 min. of restoration procedure entry NEI 99-01 Basis:
The conditions in this. threshoid represents an imminent core melt sequence which, if not corrected, could lead to vessel failure and an increased potentia! for containment failure. In conjunction with the Core Cooling and RCS Leakage criteria in tJ-1e Fuel and RCS barrier columns, this threshold would result in the declaration c,f a General Emergency -- less of two barriers and the potential loss of a third. If the function restoration procedures are lneffective, there is no "success" path.
The function restoration procedures are those emergency operating procedures that address the recovery of the core cooling critical safety functions. The procedure is considered effective if the temperature is decreasing or if the vessel water level is increasing.
Severe accident analyses (e.g., NUREG-1150) have concluded that function restoration procedures can arrest core degradation within the reactor vessel in a significant fraction of the core damage scenarios, and that the likelihood of containment failure is very small in these events. Given this, it is appropriate to provide a reasonable period to allow function restoration procedures to arrest the core melt sequence.
IPEC NON-QUALITY EMERGENCY RELATED IP-EP-AD13 Revision 22 PLAN PROCEDURE ADMINISTRATIVE f - - - - - - - - - f - - - - - ~ - - - - - ~ - - - - l PROCEDURES REFERENCE USE Page 290 of 309 Attachment 2 - Fission Product Barrier Loss/Potential Loss Matrix and Bases Whether or not the procedures will be effective should be apparent within 15 minutes. The Emergency Director should make the declaration as soon as it is determined that the procedures have been, or will be ineffective.
IPEC Basis:
This threshold indicates significant core exit superheating (core exit TC readings >700°F [715
°F] and core uncovery. It must be assumed that the loss of RCS inventory is a result of a loss of the RCS barrier. If RVLIS is reading greater than or equal to the 41 % (33% ), safety injection has been successful in restoring RCS inventory and core cooling. In the event that RVLIS reads less than 41% [33%], core cooling continues to be degraded. It must also be assumed that the loss of RCS inventor.:1 is a result of a loss of RCS barrier. These conditions, if not mitigated, will likely lead to core melt which will in turn n-Jsuit in a challenge of Containment.
IPEC Basis Reference(s):
- 1. 2-F-0.1 Core Cooling
- 2. 3-F-0.1 Core Cooling
- 3. 2-FR-C.1 Response to inadequate Core Cooling
- 4. 3-FR-C.1 Response to Inadequate Core Cooling
--=-~* JEh1tri1JR ~t'1::G ENCY NON-QUALITY RELATED PROCEDURE IP-EP-AD13 Revision 22 ADMINISTRATIVE f--------+---,----------+----,----1 PROCEDURES REFERENCE USE Page 291 of 309 Attachment 2 - Fission Product Barrier Loss/Potential Loss Matrix and Bases Barrier: Containment Category: C. Radiation Degradation Threat: Loss Threshold:
INone
IPEC NON-QUALITY EMERGENCY RELATED IP-EP-AD13 Revision 22 PLAN PROCEDURE ADMINISTRATIVE 1----- -----~ --- ------- 1 PROCEDURES REFERENCE USE Page 292 of 309 Attachment 2 - Fission Product Barrier Loss/Potential Loss Matrix and Bases Barrier: Containment Category: C. Radiation Degradation Threat: Potential Loss Threshold:
- 4. Containment radiation monitor R-25 or R-26 > 68 R/hr.
NEI 99-01 Basis:
The site specific reading is a vaiue which indicates significant fuel damage well in excess of the thresholds associated with. both los:; of Fuel Clad 8i1d loss of RCS barriers. A major release of radioactivity requiring off-site protective actions f;-om corn damage is not possible unless a major failure of fuel cladding a!icws radioactive material to be released from the core into t11e reactor coolant.
Regardless of whether containment is challi:.1nged, this amount of activity in containment,* if released, could have such severe consequences that it is prudent to treat this as a potential loss of containment, such that a General Emergency declaration is warranted.
IPEC Basis:
NOTE: At Unit 3 radiation monitors R-25 and R-26 are susceptible to Temperature Induced Current which could cause erroneous readings for the first 3 minutes of an event with a large temperature change in the VC. R-25 and R-26 readings should be validated against other radiation monitors, R-2 and R-7, for erroneous readings during this timeframe. \
IPEC NON-QUAL ITY EMERGE NCY RELATED Revision 22 PLAN PROCEDURE ADMINISTRATIVE i--------+--......----+--------.----1 PROCEDURES REFERENCE USE Page 293 of 309 Attachmen t 2 - Fission Product Barrier Loss/Potential Loss Matrix and Bases The specified reading is higher than that specified for Fuel Clad barrier Loss #3 and RCS barrier Loss #3. Containment radiation readings at or above the Containment barrier Potential Loss threshold, therefore, signify a loss of two fission product barriers and Potential Loss of a third, indicating the need to upgrade the emergency classification to a General Emergency.
The 68 R/hr. reading is a value which indicates significant fuel damage (20 % .clad failure) well in excess of the EALs associated with both loss of fuel clad and loss of RCS barriers.
NUREG-1228 "Source Estimations During Incident Response to Severe Nuclear Power Plant Accidents," indicates that such conditions do not exist when the amount of clad damage is less than 20%.
IPEC Basis Reference{s):
- 1. EAL Technical Basis Documentation for R-26 and R-26, Containment Radiation Monitors, Calculation by Dennis Quinn, dated 11/2010
IPEC NON-QUA LITY EMERGENCY RELATED IP-EP-AD13 Revision 22 PLAN PROCEDURE ADMINISTRATIVE 1--- ---- 1--- --~- ---- ,----
PROCEDURES REFERENCE USE Page 294 of 309 Attachment 2 - Fission Product Barrier Loss/Potential Loss Matrix and Bases Barrier: Containment Category: D. Inventory Degradation Threat: Loss Threshold:
- 1. A containment pressure rise followed by a rapid unexplained drop in containment pressure
~--- ---- ---- ---- -
NEI 99n01 Basis:
Rapid une~plained loss of pl"E:ss:..ire (i.e., not attributab!e to containment spray or condensation effects) following an initial pre~,sure increase from a prim&ry or secondary high energy line break indicates a loss of containment integrity.
This indicator relies on opr~rator recognition of an ur.expect2d respo;ise for the condition and therefore does not have .~ s1}ecif1c value associated with it. The unexpected response is important because it is the indicato!"' for a containment bypass condition.
IPEC Basis:
FSAR Chapter 14 describes Containment pressure response under accident conditions.
IPEC Basis Reference(s):
- 1. FSAR Chapter 14 Safety Analysis
IPEC NON-QUA LITY EMERGENCY RELATED IP-EP-AD13 Revision 22 PLAN PROCEDURE ADMINISTRATIVE i--------+----.----+----....------1 PROCEDURES REFERENCE USE Page 295 of 309 Attachment 2 - Fission Product Barrier Loss/Potential Loss Matrix and Bases Barrier: Containment Category: D. Inventory Degradation Threat: Loss Threshold:
Containment pressure and sump levels should increase as a result of mass and energy release into containment from a LOCA. Thus, sump level or pressure not increasing indicates containment bypass and a loss of containment integrity.
This indicator relies on operator recognition of an unexpected response for the condition and therefore does not have a specific value associated with it. The unexpected response is I
important because it is the indicator for a containment bypass condition.
IPEC Basis:
. FSAR Chapter 14 describes Containment pressure response under accident conditions.
IPEC Basis Reference(s):
- 1. FSAR Chapter 14 Safety Analysis
IPEC NON-QUA LITY
~&fl?:1tl]Y ~~:GE NCY RELATED IP-EP-AD13 Revision 22 PROCEDURE ADMINISTRATIVE 1-------+-----.------1------.-----1 PROCEDURES REFERENCE USE Page 296 of 309 Attachment 2 - Fission Product Barrier Loss/Potential Loss Matrix and Bases Barrier: Containment Category:
- D. Inventory Degradation Threat: Loss Threshold:
The loss threshold recognizes that SG tube leakage can represent a bypass of the Containment barrier *as well as a loss of the RCS barrier.
Users should realize that Containment Loss thresholds #3 and #4 could be considered redundant. This was recognized during the development process. The inclusion of a threshold that uses Emergency Procedure commonly used terms like "ruptured and faulted" adds to the ease of the classification process and has been included based on this human factor concern.
Escalation to General Emergency would be based on "Potential Loss" of the Fuel Clad Barrier.
This threshold addresses the condition in which a ruptured steam generator is also faulted.
This condition represents a bypass of the RCS and containment barriers and is a subset of the threshold #4. In conjunction with RCS leak rate barrier loss threshold, this would always result in the declaration of a Site Area Emergency.
IPEC Basis:
None IPEC Basis Reference(s):
- 1. 2-E-2 Faulted SG
- 2. 3-E-2 Faulted SG
- 3. 2-E-3 SG Tube Rupture
- 4. 3-E-3 SG Tube Rupture
IPEC NON-QUAL ITY EMERGENCY RELATED IP-EP-AD13 Revision 22 PLAN PROCEDURE ADMINISTRATIVE i--------+-----r---+-----,--------1 PROCEDURES REFERENCE USE Page 297 of 309 Attachment 2 - Fission Product Barrier Loss/Potential Loss Matrix and Bases Barrier: Containment Category: D. Inventory Degradation Threat: Loss Threshold:
- 4. Primary-to-Secondary leak-rate > 10 gpm.
AND Unisolable steam release from affected SG to the environment NEI 99-01 Basis:
The loss threshold recognizes that SG tube leakage can represent a bypass of the Containment barrier as well as a loss of the RCS barrier.
Users should realize that Containment Loss thresholds #3 and #4 could be considered redundant. This was recognized during the development process. The inclusion of a threshold that uses Emergency Procedure commonly used terms like "ruptured and faulted" adds to the ease of the classification process and has been included based on this human factor concern.
This threshold results in a Unusual Event for smaller breaks that; (1) do not exceed the normal
_charging capacity threshold in RCS leak rate barrier Potential Loss threshold, or (2) do not result in ECCS actuation in RCS SG tube rupture barrier Loss threshold. For larger breaks, RCS barrier threshold criteria would result in an Alert. For SG tube ruptures which may involve multiple steam gener_ators or unisolable secondary line breaks, this threshold would exist in conjunction with RCS barrier thresholds and would result in a Site Area Emergency. Escalation to General Emergency would be based on "Potential Loss" of the Fuel Clad Barrier.
This threshold addresses SG tube leaks that exceed 1O gpm in conjunction with an unisolable release path to the environment from the affected steam generator. The threshold for establishing the unisolable secondary side release is intended to be a prolonged release of radioactivity from the ruptured steam generator directly to the environment. This could be expected to occur when the main condenser is unavailable to accept the contaminated steam
IPEC NON-QUAL ITY EMERGENCY IP-EP-AD13 RELATED Revision 22 PLAN PROCEDURE ADMINISTRATIVE 1----------11-------,----+----------f PROCEDURES REFERENCE USE Page 298 of 309 Attachment 2 - Fission Product Barrier Loss/Potential Loss Matrix and Bases (i.e., SG tube rupture with concurrent loss of off-site power and the ruptured steam generator is required for plant cool down or a stuck open relief valve). If the main condenser is available, there may be releases via air ejectors, gland seal exhausters, and other similar controlled, and often monitored, pathways. These pathways do not meet the intent of an unisolable release path to the environment. These minor releases are assessed using Abnormal Rad Levels /
Radiological Effluent EALs.
IPEC Basis:
I None IPEC Basis Reference(s):
- 1. 2-E-2 Faulted SG
- 2. 3-E-2 Faulted SG
- 3. 2-E-3 SG Tube Rupture
- 4. 3-E-3 SG Tube Rupture
IPEC NON-QUA LITY EMERGENCY RELATED IP-EP-AD13 Revision 22 PLAN, PROCEDURE ADMINISTRATIVE 1--------1----~--+----...-----l PROCEDURES REFERENCE USE Page 299 of 309 Attachment 2 - Fission Product Barrier Loss/Potential Loss Matrix and Bases Barrier: Containment Category: D. Inventory Degradation Threat: Potential Loss Threshold:
- 5. Containment pressur e> 47 psig and rising NEI 99-01 Basis:
47 psig is the containment design pressure.
IPEC Basis:
This threshold is t.he containment design pressure and is in excess of that expected from the design bas.is loss of coolant accident (LOCA). Proper actuation and operation of the Containment heat removal system when requiied should maintain containment pressure well below the design pressure. The Containment response for the spectrum of LOCAs considered in the plant design basis is described in Chapter 14 of the FSAR (ref. 2). The threshold is therefore indicative of a loss of both RCS and Fuel Clad barriers in that it should not be reached without severe core degradation (metal-water reaction) or failure to trip in combination with RCS breach. This condition would be expected to require the declaration of a General Emergency.
IPEC Basis Reference(s):
- 1. 2-F-0.5 Containment
- 2. 3-F-0.5 Containment
- 3. FSAR Chapter 14 Safety Analysis
IPEC NON-QU ALITY EMERGENCY RELATED IP-EP-AD13 Revision 22 PLAN PROCEDURE ADMINISTRATIVE i----------+----.-----1----,------1 PROCEDURES REFERENCE USE Page 300 of 309 Attachment 2 - Fission Product Barrier Loss/Potential Loss Matrix and Bases Barrier: Containment Category: D_. Inventory Degradation Threat: Potential Loss Threshold:
- 6. Containment hydrogen concentration ~ 4%
NEI 99-01 Basis:
Existence of an explosive mixture means a hydrogen and oxygen concentration of at least the lower deflagration limit C'J.Pla e>::ists. The indications of potential loss under this EAL corresponds to some of those leading to the RED path in pctantiai loss threshold #1 (ref. 1).
IPEC Basis:
After a LOCA, the conialnrnent atmosphere is a hcimogeneous mixture of steam, air, solid and gaseous fission products, hydrogen, and water droplets. During and follovving a LOCA, the hydrogen concentrat1on in the containment results from radio lytic decomposition of water and metal-w ater reaction. If hydrogen concentration reaches or exceeds the lower flamma bility limit (4%, ref. 3) in an oxygen rich environment, a potentially explosive mixture exists.
Operation of the Containment Hydrogen Re-combiner with Containment hydroge n
concentrations at or above 4% could result in ignition of the hydrogen. If the combus tible mixture ignites inside containment, loss of the Containment barrier could occur. To generate such levels of combustible gas, loss of the Fuel Clad and RCS barriers must also have occurred. Since this threshold is also indicative of loss of both Fuel Clad and RCS barriers with the Potential Loss of the Containment barrier, it therefore will likely warrant declara tion of a General Emergency.
IPEC NON-QUALITY EMERGENCY RELATED IP-EP-AD13 Revision 22 PLAN PROCEDURE ADMINISTRATIVE 1 - - - - - - - - - - - , - - - - + - - - - ~ -
PROCEDURES REFERENCE USE Page 301 of 309 Attachment 2 - Fission Product Barrier Loss/Potential Loss Matrix and Bases Unit2 Containment hydrogen analyzers AIT-5109-1 and AIT-5109-1 display hydrogen concentration and alarm at 4% hydrogen concentration (ref. 2).
Unit 3 The Containment Hydrogen Concentration Measurement System is used to monitor the post-accident hydrogen concentration. Two redl:lndant sample systems are installed. One unit samples the plenum chambers of containment recirculation fans 32 and 35. The second unit samples the plenum chambers of recirculation fans 31, ;33 and 34. (ref. 4)
IPEC Basis Reference{s):
- 1. 2-F-0.5 Containment
- 2. 3-F-0.5 Containment
- 3. 2-ARP-043 Accident Assessment Panei i 4 .. 2-FR-C.1 Response tG Inadequate Core CooHng
- 5. 3-FR-C.1 Response b !r:adequate Co'm CocHng
- 6. SOP-SS-4 Containment Hydrogen Measurernent System
IPEC NON-QUA LITY EMERG ENCY RELATED IP-EP-AD13 Revision 22 PLAN PROCEDURE ADMINISTRATIVE 1--------1------,----+------r
1 PROCEDURES REFERENCE USE Page 302 of 309 Attachm ent 2 - Fission Product Barrier Loss/Potential Loss Matrix and Bases Barrier: Containment Category: D. Inventory Degradation Threat: Potential Loss Threshold:
- 7. Containment pressur e> Phase B isolation signal set-point following LOCA ANO Less,than Table F-3 depressurization equipment operating Table F-3 Minimum Containment Cooling Systems FClJs
4---------l I Spray Pumps
<3 ! 2 I
3 ! 1 i
5 0 I
NEI 99-01 Basis:
This threshold represents a potential loss of containment in that the containment heat removal/depressurization systems are either lost or performing in a degraded manner, as indicated by plant parameters such as containment pressure, pressurizer level and steam line pressure in excess of the set-point at which the equipment was supposed to have actuated.
IPEC Basis:
Adequate heat removal capability for the containment is provided by two separate, full capacity, engineered safety features systems. These are the containment spray system and the containment air recirculation cooling and filtration system. These systems are of different engineering principles and serve as independent backups for each other.
Togethe r these two systems provide the single failure protection for the containment cooling function as analyzed in Chapter 14 of the FSAR.
IPEC NON-QU ALITY EMERG ENCY RELATED IP-EP-A D13 Revision 22 PLAN PROCEDURE ADMIN ISTRAT IVE i---------+-----.-----+--------.----1 PROCE DURES REFERENCE USE Page 303 of 309 Attachm ent 2 - Fission Product Barrier Loss/Potential Loss Matrix and Bases The contain ment air recirculation cooling system is designed to recirculate and cool the contain ment atmosp here in the event of a loss-of-coolant accident and thereby ensure that the contain ment pressur e will not exceed its design value of 47 psig.
Any of the following combinations of equipm ent will provide sufficient heat remova l capabil ity to maintain the post-ac cident containment pressure below the design value, assumi ng that the core residual heat is released to the containment as steam (ref. 1, 2):
- 1. All five containment cooling fans (FCUs)
- 2. Both Contain ment Spray alone
- 3. One contain ment spray pump and three of the five contain ment cooling fans IPEC Basis Referencc{s):
- 1. Unit 2 FSAR Section 6.4.1 :i Containment Heat Removal System s
- 2. Unit 3 FSAR Section 6.4.1 Containment Heat Removal System s
IPEC NON-QUAL ITY EMERGENCY RELATED IP-EP-AD13 Revision 22 PLAN PROCEDURE ADMINISTRATIVE t--------+----.------+------..----1 PROCEDURES REFERENCE USE Page 304 of 309 Attachment 2 - Fission Product Barrier Loss/Potential Loss Matrix and Bases Barrier: Containment Category: E. Other
__ -Degradation Threat: Loss Threshold:
- 5. Inability to isolate all valves in any one line AND Direct downstream pathway to the environment exists after containment isolation signal
- NEI 99-01 Basis:
This threshold addresses incomplete contain;-1ent isolation that allows d1rect release to the environment.
The use of the modifier "direct" in defining the r6J(:;.E)S2 pat11 discrirnin::1tes again~t release paths through interfacing liquid systems. The exister.ce of an in-line charcoal filter does not make a release path indirect since the filter is not effactive at removing fission product noble gases.
Typical filters have an efficiency of 95-99% removal of iodine. Given the magnitude of the core inventory of iodine, significant releases could still occur. In addition, since the fission product release would be driven by boiling in the reactor vessel, the high humidity in the release stream can be expected to render the filters ineffective in a short period.
IPEC Basis:
This threshold is intended to address incomplete containment isolation that allows direct downstream release path to the environment.
The "inability to isolate all valves in any one line" term is intended to mean that available immediate action has been taken to isolate the system providing a direct release pathway outside containment but has failed. If no immediate action to isolate the system is available at the time it is recognized, or the location of the leak is not known such that immediate action to
IPEC NON-QUA LITY EMERGENCY RELATED IP-EP-AD13 Revision 22 PLAN* PROCEDURE ADMINISTRATIVE i - - - - - - - - - - ~ - - - - - . - - - - ;
PROCEDURES REFERENCE USE Page 305 of 309 Attachment 2 - Fission Product Barrier Loss/Potential Loss Matrix and Bases isolate cannot be initiated, then assume the "inability to isolate" condition exists for the purpose of emergency classification. Actions external to the Control Room shall be considered available only if they can be completed using normal operational procedures consistent with the requirement for "timely" emergency classification (within 15 minutes).
IPEC Basis Reference(s):
None
IPEC NON-QU ALITY EMERG ENCY PLAN RELATED PROCEDURE IP-EP-A D13 ADMIN ISTRAT IVE t - - - - - - - - - - , - - - - - - ~ -
Revisio n 22 I
PROCE DURES REFERENCE USE Page 306 of 309 Attachm ent 2 - Fission Produc t Barrier Loss/Po tential Loss Matrix and Bases Barrier: Contain ment Category: F. 'Judgm ent Degradation Threat: Loss Threshold:
- 6. Any conditio n in the opinion of the Emerge ncy Directo r that indicate s loss of the Contain ment barrier NEI 99-01 Basis:
This thresho ld address es any other fact.ors that are to be used by the Emerge ncy Directo r in determ ining whethe r the Contain ment barrier is lost. In addition, the inability to monitor the barrier should also be considen:.;d as =1 factor in Emerge ncy Directo r judgme nt that the barrier may be conside red lost.
The Contain ment barrier should not be declare d lost bassd on exceec:ing Technic al Specific ation action stateme nt criteria, unless there is dn event in progres s requirin g mitigati on by the Contain ment barrier. When no event is in progres s (Loss or Potentia l Loss of either Fuel Clad and/or RCS) the Contain ment barrier status is address ed by Technic al Specific ations.
IPEC Basis:
The Emerge ncy Directo r judgme nt thresho ld address es any other factors relevan t to determ ining if the Primary Contain ment barrier is lost. Such a determ ination should include immine nt barrier degrada tion, barrier monitor ing capabil ity and domina nt acciden t sequen ces.
- Immine nt barrier degrad ation exists if the degrada tion will likely occur within two hours based on a projecti on of curre~t safety system perform ance. The term "immine nt" refers to recogni tion of the inability to reach safety accepta nce criteria before comple tion of all checks.
IPEC NON-QUAL ITY EMERGENCY RELATED IP-EP-AD13 Revision 22 PLAN PROCEDURE ADMINISTRATIVE . . . - - - - - - - - + - - - - - - + - - - - ~ ~
PROCEDURES REFERENCE USE Page 307 of 309 Attachment 2 - Fission Product Barrier Loss/Potential Loss Matrix and Bases I) Barrier monitoring capability is decreased if there is a loss or lack of reliable indicators.
This assessment should include instrumentation operability concerns, readings from portable instrumentation and consideration of offsite monitoring results.
- Dominant accident sequences lead to degradation of all fission product barriers and likely entry to the EOPs. The Emergency Director should be mindful of the Loss of AC power(Sta tion Blackout) and ATWS EALs to assure timely emergency classification declaiations.
IPEC Basis Reference(s):
Nona
IPEC NON-QUAL ITY EMERGENCY RELATED IP-EP-AD13 Revision 22 PLAN PROCEDURE ADMINISTRATIVE 1---------1-----r---+----...------i PROCEDURES REFERENCE USE Page 308 of 309 Attachment 2 - Fission Product Barrier Loss/Potential Loss Matrix and Bases Barrier: Containment Degradation Threat: Potential Loss Category: E. Judgment Threshold:
- 6. Any condition in the opinion of the Emergency Director that indicates potential loss of the Containment barrier NEI 99~01 Basis:
This threshold addresses any other factors that are to be used by the Emergency Director in determining whether the Primary Containment barrier is potentially lost. In addition, the inability to monitor the barrier should also be considered as a factor in Emergency Director judgment that the barrier may be considered potentially lost.
- The Containment barrier should not be declared potentially lost based on exceeding Technical Specification action statement criteria, unless there is an event in progress requiring mitigation by the Containment barrier. When no event is in progress (Loss or Potential Loss of either Fuel Clad and/or RCS) the Containment barrier status is addressed by Technical Specifications.
IPEC Basis:
The Emergency Director judgment threshold addresses any other factors relevant to determining if the Primary Containment barrier is potentially lost. Such a determination should include imminent barrier degradation, barrier monitoring capability and dominant accident sequences.
- Imminent barrier degradation exists if the degradation will likely occur within two hours based on a projection of current safety system performance. The term "imminent" refers to recognition of the inability to reach safety acceptance criteria before completion of all checks.
IPEC NON-QUA LITY EMERG ENCY RELATED Revision 22 PLAN PROCEDURE ADMINISTRATIVE 1----------1-----,----------,----
-1 PROCEDURES REFERENCE USE Page 309 of 309 Attachment 2 - Fission Product Barrier Loss/Potential Loss Matrix and Bases v
- Barrier monitoring capability is decreased if there is a loss or lack of reliable indicators.
This assessment should include instrumentation operability concerns, readings from portable instrumentation and consideration of offsite monitoring results.
- Dominant accident sequences lead to degradation .of all fission product barriers and likely entry to the EOPs. The Emergency Directo, should be mindful of the Loss of AC power (Station Blackout) and AT'NS EALs to assure timely emergency classification declarations.
IPEC Basis Raference(s):
None