DCL-20-053, Independent Spent Fuel Storage Installation Emergency Plan Update

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Independent Spent Fuel Storage Installation Emergency Plan Update
ML20183A355
Person / Time
Site: Diablo Canyon  Pacific Gas & Electric icon.png
Issue date: 07/01/2020
From: Gerfen P
Pacific Gas & Electric Co
To:
Document Control Desk, Office of Nuclear Material Safety and Safeguards, Office of Nuclear Reactor Regulation
References
DCL-20-053, DIL-20-007
Download: ML20183A355 (16)
v • d • e


Text

m PacHic Gas and Electric Company*

Paula Gerfen Site Vice President Diablo Canyon Power Plant P.O. Box 56 Avila Beach, CA 93424 805.545.4596 E-Mail: Paula.Gerfen@pge.com July 1, 2020 PG&E Letter DCL-20-053 PG&E Letter DIL-20-007 U.S. Nuclear Regulatory Commission 10 CFR 50.54 ATTN: Document Control Desk 10 CFR 72.32 Washington, DC 20555-0001 10 CFR 72.44(f)

Director, Division of Fuel Management Office of Nuclear Material Safety and Safeguards U.S. Nuclear Regulatory Commission Washington, DC 20555-001 Docket No. 50-275, OL-DPR-80 Docket No. 50-323, OL-DPR-82 Diablo Canyon Units 1 and 2 Docket No. 72-26, Materials License No. SNM-2511 Diablo Canyon Independent Spent Fuel Storage Installation Emergency Plan Update

Dear Commissioners and Staff:

In accordance with the requirements of 10 CFR 50.54, 10 CFR 72.32, and 10 CFR 72.44(f), Pacific Gas and Electric Company (PG&E) is providing a summary of the analysis of changes to the Diablo Canyon Power Plant Emergency Plan (E-Plan).

The E-Plan continues to meet the requirements in Appendix E of 10 CFR 50 and the standards of 10 CFR 50.47(b). These revisions implement the changes to the E-Plan approved by the NRC in License Amendments 235/237, in addition to minor editorial corrections, as documented in the associated enclosures listed below:

  • Enclosure 1 - Diablo Canyon Power Plant Emergency Plan Table of Contents
  • Enclosure 2 - Summary of the Analysis of Changes in Emergency Plan Section 1, Revision 5.01, Definitions and Acronyms

A member of the STARS Alliance Callaway

  • Diablo Canyon
  • Palo Verde
  • Wolf Creek

Document Control Desk PG&E Letter DCL-20-053 July 1, 2020 PG&E Letter DIL-20-007 Page 2 PG&E makes no new or revised regulatory commitments (as defined by NEI 99-04) in this letter.

If there are questions regarding this update, please contact Mr. Michael Ginn, Manager, Nuclear Emergency Planning at (805) 545-3446.

Sincerely,

~~,?)

Paula Gerfen Site Vice President armb/4743/51077543 Enclosures cc/enc: William C. Allen, P.E., NMSS Project Manager Samson S. Lee, NRC Project Manager Scott A. Morris, NRC Region IV Administrator Christopher W. Newport, NRC Senior Resident Inspector Senior Emergency Preparedness Inspector (RGN-IV/DR)

A member of the STARS Alliance Callaway

  • Diablo Canyon
  • Palo Verde
  • Wolf Creek

Enclosure 1 PG&E Letter DCL-20-053 PG&E Letter DIL-20-007 DIABLO CANYON POWER PLANT EMERGENCY PLAN Table of Contents

Enclosure 1 PG&E Letter DCL-20-053 PG&E Letter DIL-20-007 Diablo Canyon Power Plant Emergency Plan Table of Contents Doc. No. Rev. Title E-Plan Coversheet 4.01 Emergency Plan E-Plan Table of 4.05 Table of Contents Contents E-Plan Section 1* 5.01 Definitions and Acronyms E-Plan Section 2 4.05 Scope and Applicability E-Plan Section 3 4.00 Summary of Emergency Plan E-Plan Section 4 5.00 Emergency Conditions E-Plan Section 5 5.01 Organizational Control of Emergencies E-Plan Section 6 5.00 Emergency Measures E-Plan Section 7 5.01 Emergency Facilities and Equipment E-Plan Section 8 4.17 Maintaining Emergency Preparedness E-Plan Section 9 4.02 Recovery E-Plan Section 10 4.03 References E-Plan Appendix A 4.08 Procedures E-Plan Appendix B 4.02 Offsite Agency Support Documents E-Plan Appendix C 4.00 Non-Applicable NUREG-0654 Standards E-Plan Appendix D 5.02 Emergency Action Level Technical Basis Manual E-Plan Appendix E 4.00 Evacuation Time Estimates E-Plan Appendix F 5.01 ERO On-Shift Staffing Analysis Report E-Plan Appendix G 4.02 Protective Action Recommendation (PAR) Strategy Bases

  • Revised Document Page 1 of 1

Enclosure 2 PG&E Letter DCL-20-053 PG&E Letter DIL-20-007 Summary of the Analysis Changes for Emergency Plan Section 1, Revision 5.01, Definitions and Acronyms

Enclosure 2 PG&E Letter DCL-20-053 PG&E Letter DIL-20-007 Change Original Content (Rev 5.0) Revised Content (Rev 5.01) Description of Change 1 Protected Area (PA) Protected Area (PA) Modified content.

Areas to which access is strictly controlled in Areas to which access is strictly controlled in License Amendments 235 and 237 were issued by accordance with the station's Security Plan. accordance with the station's Security Plan. the NRC on March 26, 2020. The amendment to the Emergency Plan (E-Plan) and Physical Security This specifically includes the areas around the This specifically includes the areas around the Plan change the physical security classification of Power Block, the Intake Structure and the Power Block and the Independent Spent Fuel the intake structure and modify portions of Diablo Independent Spent Fuel Storage Installation Storage Installation (ISFSI). Canyons protected area. The approved revision to (ISFSI). Section 1 of the E-Plan excludes the intake structure from the definition of the protected area.

This change was made to implement approved license Amendment #235 and #237 (reference Safety Evaluation Report dated March 26, 2020).

These changes do not affect how the approved E-Plan meets any planning standard functions, elements, or site-specific commitments. No evaluation required.

2 Emergency Assessment and Response Emergency Assessment and Response Modified Content.

System (EARS)/ Meteorological Information System (EARS)/ Meteorological Information Display Assessment System (MIDAS) and Dose Assessment System (MIDAS) Editorial Change.

This change makes an editorial correction to the title of MIDAS.

This change does not affect how the approved E-Plan meets any planning standard functions, elements, or site-specific commitments. No evaluation required.

3 MIDAS Meteorological Information Display MIDAS Meteorological Information and Dose Modified Content.

Assessment System Assessment System Editorial Change.

This change makes an editorial correction to the title of MIDAS.

This change does not affect how the approved E-Plan meets any planning standard functions, elements, or site-specific commitments. No evaluation required.

Page 1 of 1

Enclosure 3 PG&E Letter DCL-20-053 PG&E Letter DIL-20-007 Emergency Plan Section 1, Revision 5.01, Definitions and Acronyms"

E-Plan Section 1 - Diablo Canyon Power Plant Emergency Plan Page 1 of 9 Definitions and Acronyms Table of Contents

1. DEFINITIONS AND ACRONYMS ........................................................................................ 1 1.1 Definitions ................................................................................................................... 1 1.2 Acronyms ....................................................................................................................8
1. DEFINITIONS AND ACRONYMS
1. 1 DEFINITIONS This section defines terms used in the Diablo Canyon Power Plant Emergency Plan.

Annual A calendar year beginning January 1st and ending December 31 st

  • Assessment Actions Those actions taken during or after an accident to obtain and process information necessary for decisions implementing specific emergency measures.

Collective Dose The sum of the individual doses received in a given period of time by a specified population from exposure to a specified source of ionizing radiation.

Committed Dose Equivalent (Ht,50)

The dose equivalent to organs or tissues of reference (T) that will be received from an intake of radioactive material by an individual during the 50-year period following the intake.

Committed Effective Dose Equivalent (He,50)

The sum of the products of the weighting factors applicable to each of the body organs or tissues that are irradiated and the committed dose equivalent to these organs or tissues (HE,50 = rWTHT,50).

Company Refers to Pacific Gas and Electric Company.

Controlled Area An area outside of a restricted area but inside the site boundary, access to which can be limited by the licensee for any reason.

Corrective Actions Those emergency measures taken to ameliorate or terminate an emergency situation at or near the source of the problem in order to prevent an uncontrolled release of radioactive material or to reduce the magnitude of a release (e.g., shutting down equipment, fire fighting, repair, and damage control).

E*Plan_Section_1u3r01.DOC 0520.1329 Rev 5.01

E-Plan Section 1 - Diablo Canyon Power Plant Emergency Plan Page 2 of 9 Definitions and Acronyms Declared Pregnant Woman (DPW)

A woman who has voluntarily informed her employer, in writing, of her pregnancy and the estimated date of conception.

Deep Dose Equivalent (Hd)

Which applies to external whole-body exposure, is the dose equivalent at a tissue depth of 1 cm (1000 mg/cm 2).

Derived Air Concentration (DAC)

The concentration of a given radionuclide in air which, if breathed by the referenced man for a working year of 2,000 hours0 days <br />0 hours <br />0 weeks <br />0 months <br /> under conditions of light work (inhalation rate 1.2 cubic meters of air per hour), results in an intake of one ALI (Annual Limit of Intake). DAG values are given in Table 1, Column 3 of Appendix B to §§ 20.1001 - 20.2401.

Dose Conversion Factor (DCF)

Any factor that is used to change an environmental measurement to dose in the units of concern.

Emergency Assessment and Response System (EARS)/ Meteorological Information and Dose Assessment System (MIDAS)

The primary dose assessment program used by DCPP to project offsite dose consequences during a radiological emergency.

Early Phase The period at the beginning of a nuclear power plant incident when immediate decisions for effective use of protective actions are required, and must be based primarily on predictions of radiological conditions in the environment. This phase may last from hours to days. For the purpose of dose projection, it is assumed to last for four days.

Emergency Action Levels (EAL)

Specific radiation levels associated with airborne, waterborne, or surface deposited concentrations of radioactive materials; or specific instrument indications (including their rates of change) that may be used as thresholds for initiating a particular emergency classification level which then requires initiating a notification procedure, or initiating a particular protective action.

Emergency Classification Levels (ECL)

The four levels of nuclear power plant emergencies: Unusual Event, Alert, Site Area Emergency, and General Emergency.

E-Plan_Section_1u3r01.DOC 0520.1329 Rev 5.01

E-Plan Section 1 - Diablo Canyon Power Plant Emergency Plan Page 3 of 9 Definitions and Acronyms Emergency Planning Zone (EPZ)

A nominal 1a-mile radius around the plant which potentially could be in the plume exposure pathway (established by federal criteria, 10 CFR 50.33.). The Diablo Canyon Emergency Planning Zone includes the federally required 1a-mile radius (on land and over the ocean) and additional areas beyond the 1a-mile radius as originally defined by the State of California and San Luis Obispo County, where protective actions (evacuation and/or sheltering) may be required. The land based portions of the DCPP EPZ are divided into 12 Protective Action Zones (PAZs) defined by local geographic boundaries (refer to section 2 of the DCPP Emergency Plan for a map of the EPZ).

Emergency Worker Dose The dose received by a DCPP employee under emergency conditions. Emergency worker dose does not include public or occupational dose.

Exclusion Area Boundary An exclusion area of such size that an individual located at any point on its boundary for two hours immediately following onset of the postulated fission product release would not receive a total radiation dose to the whole body in excess of 25 rem or a total radiation dose in excess of 300 rem to the thyroid from iodine exposure.

Evacuation The urgent removal of people from an area to avoid or reduce high-level, short-term exposure, usually from the plume or from deposited activity. Evacuation may be a preemptive action taken in response to a facility condition rather than an actual release.

Facility Activation An Emergency Response Facility is activated when the minimum staff per Figures 5-2, 5-3 and 5-4 are available and the facility is ready to assume assigned functions. Although the facility may be ready, the on-shift staff may prioritize completion of critical tasks prior to turnover.

Independent Spent Fuel Storage Installation (ISFSI)

The facility shown on ISFSI Final Safety Analysis Report (FSAR) Figure 4.1-1 that is used for dry storage of spent fuel.

Intermediate Phase The period beginning after the incident source and releases have been brought under control and reliable environmental measurements are available for use as a basis for decisions on additional protective actions and extending until these protective actions are terminated. This phase may overlap the early and late phases and may last from weeks to many months. For the purpose of dose projection, it is assumed to last for one year.

E-Plan_Section_1u3r01.DOC 0520.1329 Rev 5.01

E-Plan Section 1 - Diablo Canyon Power Plant Emergency Plan Page 4 of 9 Definitions and Acronyms Late Phase The period beginning when recovery action designed to reduce radiation levels in the environment to permanently acceptable levels are commenced, and ending when all recovery actions have been completed. This period may extend from months to years (also referred to as the recovery phase).

Low Population Zone (LPZ)

The area immediately surrounding the exclusion area which contains residents, the total number and density of which are such that there is a reasonable probability appropriate protective measures could be taken in their behalf in the event of a serious accident (10 CFR 100.3). For Diablo Canyon Power Plant, the LPZ is an area encompassed by a radius of 6 statute miles on land (PAZs one and two) and the ocean out to five nautical miles.

Member of the Public An individual in a controlled or unrestricted area. However, an individual is not a member of the public during any period in which the individual receives an occupational dose.

Monitor and Prepare A type of precautionary action intended to advise the public within the EPZ that a serious emergency at the nuclear power plant exits and that it should monitor the situation and prepare for the possibility of evacuation, sheltering in place, or other protective actions.

Non-Essential Personnel DCPP personnel that do not have assigned emergency response duties or are not required for maintaining the safe operation of the plant.

Owner Controlled Area (OCA)

The land area(s) adjacent to the site boundary that is owned and controlled by the licensee, whereby access can be limited by the licensee for any reason. Generally described, the DCPP OCA is the area between the Port San Luis gate and security gate A, bounded by the eastern hills directly adjacent to the site access road and the northern evacuation route, and bounded to the west by the Pacific Ocean. (NOTE: for commitments identified in the Diablo Canyon Physical Security Plan, the "Owner Controlled Area" (OCA) is within the "Site Boundary" as described in UFSAR).

Protection factor for isotope is for the least effective respiratory equipment employed by persons in an area.

Population at Risk Those persons for whom protective actions are being or would be taken. (Reference 6.)

E-Plan_Section_1u3r01.DOC 0520.1329 Rev 5.01

E-Plan Section 1 - Diablo Canyon Power Plant Emergency Plan Page 5 of 9 Definitions and Acronyms Projected Dose Future dose calculated for a specified time period on the basis of estimated or measured initial concentrations of radionuclides or exposure rates and in the absence of protective actions.

Protected Area (PA)

Areas to which access is strictly controlled in accordance with the station's Security Plan.

This specifically includes the areas around the Power Block and the Independent Spent Fuel Storage Installation (ISFSI).

Protective Action Guide (PAG)

The projected dose to an individual, based on reference man, from an accidental release of radioactive material at which a specific protective action to reduce or avoid that dose is warranted.

Protective Action Recommendations (PARs)

Those recommended emergency measures taken before or after an uncontrolled, or controlled, release of radioactive material to prevent or minimize radiological exposures to persons likely to occur if the actions were not taken.

Protective Action Zone (PAZ)

Emergency response planning areas within the DCPP EPZ that were originally defined by the State of California and San Luis Obispo County using local geographic boundaries.

There are 12 defined PAZs within the DCPP EPZ.

Public Dose The dose received by a member of the public from exposure to ionizing radiation and to radioactive material released by licensee, or to another source of radiation either within a licensee's controlled area or in unrestricted areas. It does not include occupational dose or doses received from background radiation, as a patient from medical practices, or from voluntary participation in medical research programs.

Public Education Zone (PEZ)

The State of California Nuclear Power Plant Emergency Response Plan area enclosed by a boundary beyond the DCPP EPZ to include the area where public education is required, but planning for public protective actions (evacuation and/or sheltering) is not required.

Radiologically Controlled Area (RCA)

An area which is established for the protection of personnel from radiological hazards.

Recovery The process of reducing radiation exposure rates and concentrations of radioactive material in the environment to levels acceptable for unconditional occupancy or use.

E-Plan_Section_1u3r01.DOC 0520.1329 Rev 5.01

E-Plan Section 1 - Diablo Canyon Power Plant Emergency Plan Page 6 of 9 Definitions and Acronyms Recovery Actions Those actions taken after the emergency to restore the plant as nearly as possible to its pre-emergency condition.

Reentry Temporary entry into a restricted zone under controlled conditions.

Restricted Area Synonymous with DCPP Protected Area.

Restricted Zone An area with controlled access from which the population has been relocated.

Return The reoccupation of areas cleared for unrestricted residence or use.

Sheltering The use of structure for radiation protection from an airborne plume and/or deposited radioactive materials. As a protective action recommendation, it is instructions given to members of the public to remain indoors, turn off heating or air conditioning (as appropriate), close windows, monitor communication channels, and prepare to evacuate.

Shallow-Dose Equivalent (Hs)

Which applies to the external exposure of the skin or an extremity, is taken as the dose equivalent at a tissue depth of 0.007 centimeter (7 mg/cm 2) averaged over an area of 1 square centimeter.

Site Boundary As depicted in the Final Safety Analysis Report Update (UFSAR), Figure 2.1-2, Site Plan and Gaseous Effluent Release Points.

Total Effective Dose Equivalent (TEDE)

The sum of the deep dose equivalent (for external exposures) and the committed effective dose equivalent (for internal exposures).

Turnover The exchange of the appropriate amount of information to allow another person or team to assume the responsibility for providing a function.

Unrestricted Area An area, access to which is neither limited nor controlled by the licensee.

E-Plan_Section_1u3r01.DOC 0520.1329 Rev 5.01

E-Plan Section 1 - Diablo Canyon Power Plant Emergency Plan Page 7 of 9 Definitions and Acronyms Whole Body For purposes of external exposure, head, trunk (including male gonads), arms above the elbow, or legs above the knee.

Whole Body Dose Dose resulting from uniform exposure of the entire body to either internal or external sources of radiation.

E-Plan_Section_1u3r01.DOC 0520.1329 Rev 5.01

E-Plan Section 1 - Diablo Canyon Power Plant Emergency Plan Page 8 of 9 Definitions and Acronyms 1.2 ACRONYMS This section provides acronyms, abbreviations and symbols, other than those used within the EAL Technical Basis Manual (see attachment D), used in the Diablo Canyon Power Plant Emergency Plan.

Acronym / Abb. Meaning ASW Auxiliary Salt Water ccw Component Cooling Water CFR Code of Federal Regulations Ci Curie CRT Cathode Ray Tube eves Chemical and Volume Control System DCPP Diablo Canyon Power Plant DHS Department of Health Services (California State)

DNB Departure from Nucleate Boiling EAL Emergency Action Level EARS Emergency Assessment and Response System EGGS Emergency Core Cooling System EGL Emergency Classification Level EOG Emergency Operations Center (County)

EOF Emergency Operations Facility EPZ Emergency Planning Zone ERDS Emergency Response Data System ERFDS Emergency Response Facility Data System ERP Emergency Response Plan ESF Engineered Safety Feature FEMA Federal Emergency Management Agency FSAR Final Safety Analysis Report FTS Federal Telecommunications System GE General Emergency GM Geiger Mueller Radiation Monitor Iodine IPZ Ingestion Planning Zone ISFSI Independent Spent Fuel Storage Installation JIG Joint Information Center (A.K.A., JMC)

JMC Joint Media Center Kl Potassium Iodide LOCA Loss of Coolant Accident LPZ Low Population Zone M Meter E-Plan_Section_1u3r01.DOC 0520.1329 Rev 5.01

E-Plan Section 1 - Diablo Canyon Power Plant Emergency Plan Page 9 of 9 Definitions and Acronyms MIDAS Meteorological Information and Dose Assessment System NRG Nuclear Regulatory Commission OCA Owner Controlled Area OEL Offsite Emergency Laboratory OES Office of Emergency Services, SLO County or CA State osc Operational Support Center PAD Protective Action Decision (Offsite Agency)

PAG Protective Action Guideline PAR Protective Action Recommendation (Utility)

PAZ Protective Action Zone PEZ Public Education Zone PG&E EOG Corporate Emergency Operations Center, Conference Rm. A & B, 245 Market Street, San Francisco PIG Pressurized Ion Chamber RCA Radiological Controlled Area RCS Reactor Coolant System SAE Site Area Emergency SCADA Supervisory Control and Data Acquisition (Siren Query)

SPDS Safety Parameter Display System SRO Senior Reactor Operator SSPS Solid State Protection System TLD Thermo-luminescent Dosimeter TSC Technical Support Center TSC-CC Technical Support Center Computation Center UDAC Unified Dose Assessment Center UE Unusual Event

µCi/cc microcuries per cubic centimeter E-Plan_Section_1u3r01.DOC 0520.1329 Rev 5.01

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