Text

Spent Fuel Storage Installation, Emergency Plan Update
	ML21034A605
Person / Time
Site:	Diablo Canyon
Issue date:	02/03/2021
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-21-012, DIL-21-001
	Download: ML21034A605 (90)
	v • d • e

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 A m em ber of t he STARS Alli ance Callaway

D i ablo Canyon

Palo Ver de

Wolf Cr eek February 3, 2021 PG&E Letter DCL-21-012 PG&E Letter DIL-21-001 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). This revision updates descriptions of plant communication systems and makes editorial changes as documented in the enclosure 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 7, Revision 5.03, Emergency Facilities and Equipment

Enclosure 3 - Emergency Plan Section 7, Revision 5.03, Emergency Facilities and Equipment This update does not contain any privacy or proprietary information in accordance with NRC Generic Letter 81-27, Privacy and Proprietary Material in Emergency Plans.

m PacHic Gas and Electric Company*

Document Control Desk PG&E Letter DCL-21-012 February 3, 2021 PG&E Letter DIL-21-001 Page 2 A m em ber of t he STARS Alli ance Callaway

D i ablo Canyon

Palo Ver de

Wolf Cr eek 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) 440-4187.

Sincerely, Paula Gerfen Site Vice President armb/4743/51103668 Enclosures cc/enc: William C. Allen, P.E., NMSS Project Manager Donald R. Krause, NRC Senior Resident Inspector Samson S. Lee, NRC Project Manager Scott A. Morris, NRC Region IV Administrator Senior Emergency Preparedness Inspector (RGN-IV/DR)

PG&E Letter DCL-21-012 PG&E Letter DIL-21-001 DIABLO CANYON POWER PLANT EMERGENCY PLAN Table of Contents PG&E Letter DCL-21-012 PG&E Letter DIL-21-001 Page 1 of 1 Diablo Canyon Power Plant Emergency Plan Table of Contents Doc. No.

Rev. Title E-Plan Coversheet 4.01 Emergency Plan E-Plan Table of Contents 4.05 Table of 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 5.01 Emergency Conditions E-Plan Section 5 5.01 Organizational Control of Emergencies E-Plan Section 6 5.00 Emergency Measures E-Plan Section 7*

5.03 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 PG&E Letter DCL-21-012 PG&E Letter DIL-21-001 Summary of the Analysis Changes for Emergency Plan Section 7, Revision 5.03, Emergency Facilities and Equipment PG&E Letter DCL-21-012 PG&E Letter DIL-21-001 Page 1 of 15 Change Original Content (Rev 5.02)

Revised Content (Rev 5.03)

Description of Change 1

7.1.5.1 Location and Description The Operational Support Center (OSC) provides locations functionally separate from the Control Room and Technical Support Center where designated support personnel assemble and await specific assignment during an emergency. The OSC command center is located in the buttress area on 104-foot elevation, adjacent to the west side of the Unit 2 Turbine Building and the south end of the TSC. Depending on the emergency events and plant conditions, personnel assigned to the OSC may be directed to assemble at the OSC command center, the 85' RCA Access Control, the site medical facility, the firefighters equipment storage area on the 140' elevation. OSC assembly areas serve as team dispatch locations and contain a variety of emergency support equipment immediately available for emergency use. The OSC command center is equipped with a dedicated tie line telephone extension to other facilities.

7.1.5.1 Location and Description The Operational Support Center (OSC) provides locations functionally separate from the Control Room and Technical Support Center where designated support personnel assemble and await specific assignment during an emergency. The OSC command center is located in the buttress area on 104-foot elevation, adjacent to the west side of the Unit 2 Turbine Building and the south end of the TSC. Depending on the emergency events and plant conditions, personnel assigned to the OSC may be directed to assemble at the OSC command center, the 85' RCA Access Control, the site medical facility, and/or the firefighters equipment storage area on the 140' elevation. OSC assembly areas serve as team dispatch locations and contain a variety of emergency support equipment immediately available for emergency use.

The OSC command center is equipped with a two-way auto ring-down phone line with priority access to other facilities.

Modified content Editorial change to add and/or to clarify location of medical facility and firefighters equipment. Revised description of the OSC tie line to an auto ring-down phone line. These lines have priority access to private branch exchange (PBX) facilities and trunks over other calls. The two-way auto ring-down phone line has the same capability as the tie line. When the telephone at one end goes off-hook, the phone at the other end instantly rings. No dialing is involved and therefore telephone sets without dials are sometimes used.

These lines have priority access to PBX facilities and trunks over other calls.

Capability of the system is not degraded as a result of this change.

There is no change of intent or current practice.

This change is evaluated in 50.54(q) effectiveness evaluation 2020-41.

PG&E Letter DCL-21-012 PG&E Letter DIL-21-001 Page 2 of 15 Change Original Content (Rev 5.02)

Revised Content (Rev 5.03)

Description of Change 2

7.1.5.4 Emergency Equipment and Supplies The OSC command center has a dedicated tie line to the TSC and Control Room and has a CBX telephone with emergency facility priority access to commercial telephone circuits. In addition, there is access to portable radio equipment.

7.1.5.4 Emergency Equipment and Supplies The OSC command center has a two-way auto ring-down phone line with priority access to the TSC and Control Room and has a PBX telephone with emergency facility priority access to commercial telephone circuits. In addition, there is access to portable radio equipment.

Modified content Revised description of the OSC tie line to an auto ring-down phone line and corrected designation from CBX to PBX.

The two-way auto ring-down phone line has the same capability as the tie line.

When the telephone at one end goes off-hook, the phone at the other end instantly rings. No dialing is involved and therefore telephone sets without dials are sometimes used. These lines have priority access to PBX facilities and trunks over other calls. Capability of the system is not degraded as a result of this change.

There is no change of intent or current practice.

This change is evaluated in 50.54(q) effectiveness evaluation 2020-41.

PG&E Letter DCL-21-012 PG&E Letter DIL-21-001 Page 3 of 15 Change Original Content (Rev 5.02)

Revised Content (Rev 5.03)

Description of Change 3

7.2 Communications Equipment 7.2 Communications Equipment DCPP is provided with two categories of telephone networks: Operations plant telephone network (OPTN) and Admin plant telephone network (APTN). All plant telephones on these company telephone networks (whether Operations or Admin) are capable of communicating with other company telephones, including other plant telephones located at on-site and off-site emergency response facilities. The communications equipment described in this section deals with the OPTN which provides the DCPP E-Plan communications capabilities.

Added Content Adding summary description of new phone system. Details of the system function are listed in the sections following.

This change is evaluated in 50.54(q) effectiveness evaluation 2020-41.

PG&E Letter DCL-21-012 PG&E Letter DIL-21-001 Page 4 of 15 Change Original Content (Rev 5.02)

Revised Content (Rev 5.03)

Description of Change 4

7.2.1 Plant Telephone Network ¶ 1 The Plant Telephone Network (PTN) is part of the Company owned and operated telecommunications system, which is used for routine inter-company communications. Any plant telephone on the company telephone network is capable of communicating with other company telephones, including other plant telephones located at on-site and off-site emergency response facilities.

During an emergency, the PTN is the primary communication method for voice communications between emergency response facilities. Plant telephones are located at various locations throughout the plant, including the Control Room, Hot Shutdown panels, Security Building, laboratories, shops, Technical Support Center, Operational Support Center, Emergency Operations Facility, and other work and equipment operating areas. In addition, phone jacks are located in the Control Room and at other strategic operating locations throughout the plant. Each phone jack is associated with a telephone number, and when used in conjunction with a portable telephone unit, can communicate with any other telephone in the power plant as well as the company telephone network.

7.2.1 Plant Telephone Network ¶ 1 The Operations Plant Telephone Network (OPTN) is part of the Company owned and operated telecommunications system, which can be used for routine inter-company communications. Any plant telephone on the company telephone network is capable of communicating with other company telephones, including other plant telephones located at on-site and off-site emergency response facilities. The OPTN is designed with a highly redundant and resilient architecture. During an emergency, the OPTN is the primary communication method for voice communications between emergency response facilities.

Plant telephones are located at various locations throughout the plant, including the Control Room, Hot Shutdown panels, Security Building, laboratories, shops, Technical Support Center, Operational Support Center, Emergency Operations Facility, Alternate Emergency Response Facilities in San Luis Obispo, and other work and equipment operating areas. In addition, phone jacks are located in the Control Room and at other strategic operating locations throughout the plant.

Each phone jack is associated with a telephone number, and when used in conjunction with a portable telephone unit, can communicate with any other telephone in the power plant as well as the company telephone network.

Modified content Revised name of the telephone network.

Addressed redundancy of the new system design.

Added Alternate Facilities to the list of locations Capability of the system is not degraded as a result of this change. There is no change of intent or current practice.

This change is evaluated in 50.54(q) effectiveness evaluation 2020-41.

PG&E Letter DCL-21-012 PG&E Letter DIL-21-001 Page 5 of 15 Change Original Content (Rev 5.02)

Revised Content (Rev 5.03)

Description of Change 5

7.2.1 Plant Telephone Network ¶ 2 The PTN is configured to be a highly reliable independent system using a computerized private branch exchange (PBX) switching system to control servers (i.e., nodes) that are linked over two fiber optic network rings. The PTN is comprised of two primary nodes and two redundant secondary nodes that are each capable of controlling the entire PBX network if a control server in the network fails. The fiber optic rings are independent from the plant computer local area network (LAN) and provide two separate redundant paths in the event that one section of network is inoperable.

7.2.1 Plant Telephone Network ¶ 2 The OPTN Private Branch Exchange (PBX) consists of redundant and resilient core switching systems and gateways.

The equipment is geographically distributed and designed with no single points of failure. The core switching systems located in Power Block Com Room 1 and the Building 102 Communications Room are each capable of automatically handling all call traffic should the other system fail. The EOF and Alternate TSC-OSC are part of the OPTN infrastructure.

Modified content Revised the description of the upgraded phone system that replaces the Plant Telephone Network. Redundancy is maintained with the system upgrade.

Capability of the system is not degraded as a result of this change.

There is no change of intent or current practice.

This change is evaluated in 50.54(q) effectiveness evaluation 2020-41.

PG&E Letter DCL-21-012 PG&E Letter DIL-21-001 Page 6 of 15 Change Original Content (Rev 5.02)

Revised Content (Rev 5.03)

Description of Change 6

7.2.1 Plant Telephone Network ¶ 3 Telephone calls to and from the PTN are processed via tie trunks over two independent transmission systems. The first link is between the PTN and the company telephone network via a public switched telephone network (PSTN).

The other link is via the company-owned and operated microwave system. In addition to these trunks, additional one-way tie trunks are provided to the PBX in the San Francisco Corporate Headquarters. These trunks provide direct dial access to the corporate telephone exchange, bypassing the normal dial traffic, and can be accessed only by high priority telephones. The trunks ensure calls by high-priority telephones can be made to selected Corporate Offices as well as providing an alternate access to the PSTN through San Francisco should the local PSTN Exchange in San Luis Obispo be congested.

Also, off-premise extensions (i.e., plant telephones physically located off-site) located in the Corporate Offices provide unrestricted access to the plant PBX excluding the necessity of operating through the PBX in San Francisco.

7.2.1 Plant Telephone Network ¶ 3 External Public Switched Telephone network (PSTN) telephone calls to and from the OPTN are processed as follows:

For DCPP and Alternate TSC-OSC phones, the calls are via redundant Telco Session Initiation Protocol (SIP) trunks over two independent route-diversified trunks; and for EOF phones the calls are via redundant Telco ISDN-PRI T1 trunks.

In case of the remote possibility of both DCPP SIP trunks to the PSTN failing at the same time, the OPTN can be rerouted to the PG&E central datacenter PSTN SIP trunks. Internal PG&E calls to and from the OPTN to and from sites outside the DCPP area are routed via route-diversified SIP trunks using the resilient PG&E Wide Area Network and are processed by the PG&E private voice network.

The OPTN allows for two-way auto ring-down phone lines with priority access.

The ring-down function rings a phone or group of phones when one of the phones goes off-hook. Priority access ensures selected phone lines take priority over other call traffic.

Also, off-premise extensions (i.e., plant telephones physically located off-site) provide unrestricted access to the OPTN.

These extensions are at locations throughout San Luis Obispo County.

Modified content Revised the description of the upgraded phone system that replaces the current Plant Telephone Network. Redundancy, ring-down capability, and locations are all addressed. These lines have priority access to PBX facilities and trunks over other calls. Capability of the system is not degraded as a result of this change.

There is no change of intent or current practice.

This change is evaluated in 50.54(q) effectiveness evaluation 2020-41.

PG&E Letter DCL-21-012 PG&E Letter DIL-21-001 Page 7 of 15 Change Original Content (Rev 5.02)

Revised Content (Rev 5.03)

Description of Change 7

7.2.1 Plant Telephone Network ¶ 4 The PTN has several built in conference call features to allow multiple callers to be connected to the same phone call.

One such line is set aside for emergency use and is normally initiated following the sounding of the emergency signal or the fire alarm. Numerous personnel who pick up a company phone and dial a special conference call number will be included in the call.

7.2.1 Plant Telephone Network ¶ 4 The OPTN has several built-in conference call features to allow multiple callers to be connected to the same phone call. One such line is set aside for emergency use and is normally initiated following the sounding of the emergency signal or the fire alarm. Numerous personnel who pick up a company phone and dial a special conference call number will be included in the call.

Editorial Change Change to revise acronym for the upgraded phone system.

There is no change of intent or current practice.

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

PG&E Letter DCL-21-012 PG&E Letter DIL-21-001 Page 8 of 15 Change Original Content (Rev 5.02)

Revised Content (Rev 5.03)

Description of Change 8

7.2.2 Communication Interface with Public Switched Telephone Network (PSTN)

The DCPP Emergency Response Facilities are served by two trunk groups, the Administrative and Emergency.

The PTN has direct inward dial lines which allow direct access to plant extensions from the PSTN. These lines come in via two separate paths for redundancy. All service from the PSTN to the PTN is distributed among the two PBX nodes. Separate PSTN lines come into the plant for operational use. One line is mounted on the Senior Control Operator's desk in the Control Room to call out from the Control Room in an emergency. This number is unlisted to assure it will not be tied up. A second line runs to the site vice president's office, a third line to the Security Supervisor's office, a fourth line is dedicated to the Central Alarm Station (CAS) and the fifth goes to the Secondary Alarm Station (SAS).

7.2.2 Communication Interface with Public Switched Telephone Network (PSTN)

The DCPP Emergency Response Facilities are served by two redundant shared Session Initiation Protocol (SIP) trunks for handling both Administrative and Emergency call traffic.

The OPTN has direct dial lines which allow direct access to plant extensions from the PSTN. These trunk lines come in via two separate paths for redundancy.

All service from the PSTN to the OPTN is distributed among the two PBX nodes.

Separate redundant trunks are provided to the EOF for handling the Administrative and Emergency call traffic. Separate PSTN lines come into the plant for operational use. One line is mounted on the Senior Control Operator's desk in the Control Room to call out from the Control Room in an emergency. A second line runs to the site vice president's office, a third line to the Security Supervisor's office, a fourth line is dedicated to the Central Alarm Station (CAS) and the fifth goes to the Secondary Alarm Station (SAS). These numbers are unlisted to ensure they will not be tied up.

Modified content Revised the description and nomenclature of the upgraded phone system that replaces the Plant Telephone Network to include redundancy and locations. Also reordered text and addressed the redundancy that is maintained with the system upgrade. Capability of the system is not degraded as a result of this change.

There is no change of intent or current practice.

This change is evaluated in 50.54(q) effectiveness evaluation 2020-41.

PG&E Letter DCL-21-012 PG&E Letter DIL-21-001 Page 9 of 15 Change Original Content (Rev 5.02)

Revised Content (Rev 5.03)

Description of Change 9

7.2.4 Control Room Communication Numerous phone lines link the Control Room to the plant PBX nodes for redundancy.

In addition, there are several special provisions including:

Dedicated dispatch lines that link the Control Room to the Company San Francisco General Office.

Dedicated tie lines go from the Control Room and (TSC) Technical Support Center to NRC Headquarters in Bethesda, Maryland (NRC FTS telephone),

California Office of Emergency Services (CA OES) located in Sacramento, the Emergency Operations Facility (EOF) and the Sheriff's Department in San Luis Obispo. In addition, there are dedicated tie lines from the Operational Support Center (OSC) and the TSC to the Control Room.

7.2.4 Control Room Communication Numerous phone lines link the Control Room to the plant PBX nodes for redundancy.

In addition, there are several special provisions including:

Two-way auto ring-down lines from the Control Room and Technical Support Center (TSC) to the California Office of Emergency Services (CA OES) located in Sacramento, the Emergency Operations Facility (EOF), and the Sheriff's Department in San Luis Obispo.

Dedicated lines that go from the Control Room and TSC to NRC Headquarters in Bethesda, Maryland (NRC FTS telephone).

Two-way auto ring-down phones with priority access from the Operational Support Center (OSC) and the TSC to the Control Room.

Modified content Revised description of the Control Room tie line to an auto ring-down phone line.

The two-way auto ring-down phone line has the same capability as the tie line.

When the telephone at one end goes off-hook, the phone at the other end instantly rings. No dialing is involved and therefore telephone sets without dials are sometimes used. These lines have priority access to PBX facilities and trunks over other calls.

Revised the order of the wording describing the NRC FTS phones. The NRC FTS System is not impacted by this upgrade.

The dispatch line refers to Emergency Control Center communications that are no longer in place (removed from FSAR in a previous revision) and are not part of emergency response capability. The upgraded system is still able to communicate with all PG&E facilities including San Francisco General Office.

Capability of the system is not degraded as a result of this change.

There is no change of intent or current practice.

This change is evaluated in 50.54(q) effectiveness evaluation 2020-41.

PG&E Letter DCL-21-012 PG&E Letter DIL-21-001 Page 10 of 15 Change Original Content (Rev 5.02)

Revised Content (Rev 5.03)

Description of Change 10 7.2.5 Telephone Communications for the Technical Support Center (TSC) ¶ The TSC has numerous phone lines to the plant PBX network. Additional telephone communications for the TSC are provided by a PBX Attendant Console. From this console, all incoming calls to the plant emergency phone number can be answered and/or transferred to personnel designated for response. The console can also be used to obtain an outgoing trunk line for use by the TSC. The Attendant's Console will normally be shut-off except during an emergency.

7.2.5 Telephone Communications for the Technical Support Center (TSC) ¶ 1 The TSC has numerous phone lines to the plant PBX network. Additional telephone communications for the TSC are provided by a PBX multi-line phone.

From this phone, all incoming calls to the plant emergency phone number can be answered and/or transferred to personnel designated for response. The phone can also be used to obtain an outgoing trunk for use by the TSC phones.

Modified content Revised the description of the upgraded phone system that replaces the Plant Telephone Network.

The Attendant Console was replaced by a multi-line phone. The phone allows an operator to receive and transfer calls to the appropriate destination as needed.

Capability of the system is not degraded as a result of this change.

There is no change of intent or current practice.

This change is evaluated in 50.54(q) effectiveness evaluation 2020-41.

PG&E Letter DCL-21-012 PG&E Letter DIL-21-001 Page 11 of 15 Change Original Content (Rev 5.02)

Revised Content (Rev 5.03)

Description of Change 11 7.2.5 Telephone Communications for the Technical Support Center ¶ 2 The TSC has dedicated lines to the Control Room, Operational Support Center, Emergency Operations Facility, the San Luis Obispo County Sheriff's Department and the California Office of Emergency Services (CA OES). The TSC also has a standard unlisted telephone from the NRC FTS telephone system. This telephone provides direct access to an off-site location in the event the Company exchange system is not available.

7.2.5 Telephone Communications for the Technical Support Center ¶ 2 The TSC has two-way auto ring-down phone lines with priority access to the Control Room, Operational Support Center, Emergency Operations Facility, the San Luis Obispo County Sheriff's Department and the California Office of Emergency Services (CA OES). The TSC also has a standard unlisted telephone from the NRC FTS telephone system.

This telephone provides direct access to an off-site location in the event the Company exchange system is not available.

Modified content Revised description of the TSC tie line to an auto ring-down phone line.

The two-way auto ring-down phone line has the same capability as the tie line.

When the telephone at one end goes off-hook, the phone at the other end instantly rings. No dialing is involved and therefore telephone sets without dials are sometimes used. These lines have priority access to PBX facilities and trunks over other calls. Capability of the system is not degraded as a result of this change.

There is no change of intent or current practice.

This change is evaluated in 50.54(q) effectiveness evaluation 2020-41.

PG&E Letter DCL-21-012 PG&E Letter DIL-21-001 Page 12 of 15 Change Original Content (Rev 5.02)

Revised Content (Rev 5.03)

Description of Change 12 7.2.6 Operational Support Center The Operational Support Center (OSC) has a PBX line and a dedicated auto-tie line to the Control Room and the TSC. In addition, the OSC has access to several telephone extensions installed for routine use.

7.2.6 Operational Support Center The Operational Support Center (OSC) has a PBX line and a two-way auto ring-down phone line with priority access to the Control Room and the TSC. In addition, the OSC has access to several telephone extensions installed for routine use.

Modified content Revised description of the OSC tie line to an auto ring-down phone line.

The two-way auto ring-down phone line has the same capability as the tie line.

When the telephone at one end goes off-hook, the phone at the other end instantly rings. No dialing is involved and therefore telephone sets without dials are sometimes used. These lines have priority access to PBX facilities and trunks over other calls. Capability of the system is not degraded as a result of this change.

There is no change of intent or current practice.

This change is evaluated in 50.54(q) effectiveness evaluation 2020-41.

PG&E Letter DCL-21-012 PG&E Letter DIL-21-001 Page 13 of 15 Change Original Content (Rev 5.02)

Revised Content (Rev 5.03)

Description of Change 13 7.2.7 Telephone Communication at the Emergency Operations Facility (EOF)

¶ 1 The Emergency Operations Facility (EOF) and County Emergency Operations Center (EOC) are co-located near the San Luis Obispo County Sheriff's Department. Included in the building is the County Sheriff's Dispatch Center, which has a dedicated tie line to the Control Room and TSC. This circuit is a common circuit to all these locations and can be accessed from each end.

Emergency Operations Facility (EOF) ¶ 1

The Emergency Operations Facility (EOF) and County Emergency Operations Center (EOC) are co-located near the San Luis Obispo County Sheriff's Department.

Included in the building is the County Sheriff's Dispatch Center, which has a two-way auto ring-down phone line with priority access to the Control Room and TSC. This phone line can be accessed from each end.

Modified content Revised description of the EOF tie line to an auto ring-down phone line.

The two-way auto ring-down phone line has the same capability as the tie line.

When the telephone at one end goes off-hook, the phone at the other end instantly rings. No dialing is involved and therefore telephone sets without dials are sometimes used. These lines have priority access to PBX facilities and trunks over other calls. Capability of the system is not degraded as a result of this change.

There is no change of intent or current practice.

This change is evaluated in 50.54(q) effectiveness evaluation 2020-41.

14 7.2.7 ¶ 3 Communication circuits for the EOF include telephone lines from the power plant exchange and additional unlisted telephone lines from the PSTN Network.

The NRC FTS telephone lines also tie into the EOF.

7.2.7 ¶ 3 Communication circuits for the EOF include telephone trunk lines from the DCPP PBX and additional unlisted telephone lines from the PSTN Network.

The NRC FTS telephone lines also tie into the EOF.

Editorial Change Change to nomenclature to be consistent with the upgraded phone system.

There is no change of intent or current practice.

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

PG&E Letter DCL-21-012 PG&E Letter DIL-21-001 Page 14 of 15 Change Original Content (Rev 5.02)

Revised Content (Rev 5.03)

Description of Change 15 7.3.2 Fire Signal ¶ 1 The fire signal is produced by sirens placed at numerous locations through out the plant. The fire signal is a steady tone for thirty seconds.

7.3.2 Fire Signal ¶ 1 The fire signal is produced by sirens placed at numerous locations throughout the plant. The fire signal is a steady tone for thirty seconds.

Editorial Change Change to correct spelling/format.

There is no change of intent or current practice.

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

16 7.3.2 ¶ 2 The fire signal may be initiated from any PG&E dial telephone in the plant. A three-digit number is dialed to actuate the signal. The caller is routed to the Control Room where the Unit 1 operator can filter the call and verify the need to sound the Fire Signal. If the operator is delayed from answering, the caller will route to the Emergency Bridge after four rings. The Fire Signal is actuated as soon as the call enters the Bridge and sounds for 30 seconds.

7.3.2 ¶ 2 The fire signal may be initiated from any PG&E dial telephone in the plant. A three-digit number is dialed, and the caller is routed to the Control Room where the Unit 1 operator can filter the call and verify the need to sound the Fire Signal. If required, the operator actuates the signal.

If the operator is delayed from answering, the caller will route to the Emergency Bridge after four rings. The Fire Signal is actuated as soon as the call enters the Bridge and sounds for 30 seconds.

Modified content Revised to clarify the description of the initiation of the fire signal.

There is no change of intent or current practice.

This change is evaluated in 50.54(q) effectiveness evaluation 2020-41.

PG&E Letter DCL-21-012 PG&E Letter DIL-21-001 Page 15 of 15 Change Original Content (Rev 5.02)

Revised Content (Rev 5.03)

Description of Change 17 7.4.2 Indoor Warning ¶ 2 San Luis Obispo Country also has approximately 100 tone alert monitor receivers in schools, hospitals, special care facilities, and other institutions to alert them with special instructions.

7.4.2 Indoor Warning ¶ 2 San Luis Obispo County also has approximately 100 tone alert monitor receivers in schools, hospitals, special care facilities, and other institutions to alert them with special instructions.

Editorial Change Change to correct word usage, from Country to County.

There is no change of intent or current practice.

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

PG&E Letter DCL-21-012 PG&E Letter DIL-21-001 Emergency Plan Section 7, Revision 5.03, Emergency Facilities and Equipment "--

E-Plan Section 7 - Diablo Canyon Power Plant Emergency Plan Page 1 of 69 Emergency Facilities and Equipment E-Plan_Section_7u3r03.DOC 1209.1222 Rev 5.03 Table of Contents

7.

EMERGENCY FACILITIES AND EQUIPMENT.................................................................... 2 7.1 Emergency Response Facilities.................................................................................. 3 7.1.1 Control Room................................................................................................ 3 7.1.2 Hot Shutdown Panel..................................................................................... 5 7.1.3 Dedicated Shutdown Panel........................................................................... 8 7.1.4 Technical Support Center (TSC)................................................................. 10 7.1.5 Operational Support Center........................................................................ 17 7.1.6 Emergency Operations Facility................................................................... 19 7.1.7 PG&E Energy Education Center................................................................. 24 7.1.8 San Luis Obispo Electric Control Center Operations................................... 25 7.2 Communications Equipment..................................................................................... 26 7.2.1 Plant Telephone Network............................................................................ 26 7.2.2 Communication Interface with Public Switched Telephone Network (PSTN)27 7.2.3 Power Supplies........................................................................................... 27 7.2.4 Control Room Telephone Communication................................................... 28 7.2.5 Telephone Communications for the Technical Support Center (TSC)......... 28 7.2.6 Operational Support Center Telephone Communications........................... 28 7.2.7 Telephone Communication at the Emergency Operations Facility (EOF).... 28 7.2.8 Data Communication System...................................................................... 29 7.2.9 Nuclear Regulatory Commission Communication Lines.............................. 29 7.2.10 Satellite Telephones................................................................................... 30 7.2.11 UHF and VHF Radio System...................................................................... 30 7.2.12 Joint Information Center.............................................................................. 31 7.2.13 News Services Office San Francisco.......................................................... 31 7.3 On-Site Signals and Alarms...................................................................................... 31 7.3.1 Site Emergency Signal................................................................................ 31 7.3.2 Fire Signal................................................................................................... 32 7.3.3 Criticality Monitor Signal.............................................................................. 32 7.3.4 Containment Evacuation Signal.................................................................. 32 7.4 Off-Site Early Warning System................................................................................. 33 7.4.1 Outdoor Warning......................................................................................... 33 7.4.2 Indoor Warning........................................................................................... 34 7.4.3 Early Warning System-Area of Coverage.................................................... 34 7.4.4 Siren Location............................................................................................. 36 7.4.5 Early Warning System Activation................................................................ 36 7.5 On-Site Assessment Systems and Equipment.......................................................... 36 7.5.1 Seismic Monitoring System (SMS).............................................................. 36 7.5.2 Meteorological Systems.............................................................................. 37 7.5.3 Area Radiation Monitoring System.............................................................. 39 7.5.4 Process Radiological Monitoring System.................................................... 41 7.5.5 Radiological Counting Room....................................................................... 44 7.5.6 Analytical Facilities Associated with On-Site Technical Support Center...... 44 7.5.7 Portable Survey and Dose Rate Instruments.............................................. 48 7.5.8 Field Monitoring and Evacuation Kits.......................................................... 50 7.5.9 Fire Detection and Trouble Alarm System................................................... 52 7.5.10 Sampling and Analysis Capability............................................................... 52 7.5.11 Miscellaneous Post Accident Assessment Instruments............................... 52 7.6 Off-Site Monitoring Equipment.................................................................................. 54 7.6.1 Off-Site Geophysical Monitors..................................................................... 54 7.6.2 Off-Site Meteorological Data....................................................................... 54

E-Plan Section 7 - Diablo Canyon Power Plant Emergency Plan Page 2 of 69 Emergency Facilities and Equipment E-Plan_Section_7u3r03.DOC 1209.1222 Rev 5.03 7.6.3 Environmental Direct Radiation Monitors and Air Sampling Devices........... 54 7.6.4 Off-Site Radiation Monitoring System......................................................... 58 7.6.5 Off-Site Laboratories................................................................................... 60 7.6.6 Off-Site Emergency Laboratory (OEL)........................................................ 61 7.7 Miscellaneous Protective Facilities and Equipment................................................... 61 7.7.1 Installed Smoke, Flame & Heat Detectors................................................... 61 7.7.2 Fire Detection by Personnel........................................................................ 62 7.7.3 Plant Fire Detection and Suppression and Respiratory Protection.............. 63 7.7.4 Halon 1301 Systems................................................................................... 63 7.7.5 Mobile Fire Fighting Equipment................................................................... 64 7.7.6 Respiratory Protection Equipment............................................................... 64 7.7.7 Self-Contained Breathing Apparatus T03689.............................................. 64 7.7.8 Constant Flow Air Line Respirators............................................................. 64 7.7.9 Radiological Protective Clothing.................................................................. 65 7.7.10 Containment Hydrogen Recombiners......................................................... 65 7.7.11 Permanent Lighting Systems...................................................................... 66 7.7.12 Portable Lighting......................................................................................... 66 7.7.13 Transportation............................................................................................. 67 7.7.14 Alternate Facilities....................................................................................... 68 7.8 First Aid and Medical Facilities.................................................................................. 68 7.8.1 Personnel Decontamination Facilities......................................................... 68 7.8.2 First Aid Kits and Stretchers........................................................................ 68 7.8.3 Whole Body Counters................................................................................. 68 7.9 Cross Reference To NUREG-0654........................................................................... 69

7.

EMERGENCY FACILITIES AND EQUIPMENT If corrective measures are to be promptly initiated in an emergency situation, it is important required emergency equipment and facilities be readily available. To the maximum extent possible, normal plant equipment and controls will be used to mitigate the consequences of an accident. In some instances, special emergency equipment and facilities have been provided. This section describes this special equipment in conjunction with normal plant equipment that has particular application in an emergency.

The Emergency Plan provides for a number of on-site and off-site facilities intended for use as accident management centers, and personnel staging and planning areas. These facilities are discussed briefly in the following paragraphs.

E-Plan Section 7 - Diablo Canyon Power Plant Emergency Plan Page 3 of 69 Emergency Facilities and Equipment E-Plan_Section_7u3r03.DOC 1209.1222 Rev 5.03 7.1 EMERGENCY RESPONSE FACILITIES 7.1.1 Control Room 7.1.1.1 Location and Description The Control Room is common to Units 1 and 2 and is located at the 140' elevation of the Auxiliary Building as shown below. The Shift Manager's office is located adjacent to the Control Room. The Control Room has lavatory and kitchen facilities.

7.1.1.2 Emergency Function Prior to the time the Technical Support Center (TSC) is activated (and throughout the course of an emergency in which the TSC is not activated) the Control Room will serve as the headquarters for the Site Emergency Coordinator. All on-site activities are directed from this location, and all communication with off-site agencies will originate from the Control Room. The Control Room has the necessary equipment and instruments to perform accident assessment work involving possible or actual radiological releases and fuel barrier damage.

Following activation, overall control of on-site activities will be transferred to the TSC or EOF. If the TSC is activated before the EOF, then the TSC will assume responsibilities for communications with off-site agencies until relieved by the EOF. The Control Room will then be headquarters of the on-site Operations Coordinator, and the major Control Room activity will be operation of plant equipment to mitigate the consequences of the emergency.

The Control Room also serves as the backup to the TSC should the latter be unavailable.

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E-Plan Section 7 - Diablo Canyon Power Plant Emergency Plan Page 4 of 69 Emergency Facilities and Equipment E-Plan_Section_7u3r03.DOC 1209.1222 Rev 5.03 7.1.1.3 Habitability Objectives The Control Room is designed to be habitable throughout the course of a design-basis accident. The Control Room shielding and ventilation system is designed to limit post-accident doses to 5 rem TEDE for the duration of the accident.

The Control Room is provided with a Design Class I Criteria Ventilation System. The design of the system includes provisions for:

1) Protection from smoke generated inside or outside the Control Room area.

2) Protection from airborne radioactivity outside the Control Room and provisions for cleanup of activity trapped in the room.

3) Protection from airborne toxic gas outside the Control Room.

4) Provisions for limiting carbon dioxide buildup inside the Control Room during periods when airborne contaminants prevent use of outside makeup air.

7.1.1.4 Special Equipment The Control Room is the most completely equipped location in the plant in terms of provisions to monitor the status of plant systems and equipment. The Control Room has complete communication capability; as well as access to meteorological, seismic, and radiological monitoring data.

E-Plan Section 7 - Diablo Canyon Power Plant Emergency Plan Page 5 of 69 Emergency Facilities and Equipment E-Plan_Section_7u3r03.DOC 1209.1222 Rev 5.03 7.1.2 Hot Shutdown Panel 7.1.2.1 Location and Description Each unit is provided with a hot shutdown panel located in the Auxiliary Building at the 100' elevation as shown below. Each hot shutdown panel is a single control panel with two sub-panels.

7.1.2.2 Emergency Function The hot shutdown panel contains the essential indicator and controls to maintain a unit in hot standby condition for an extended time period. The hot shutdown panel is primarily intended to be used for a situation in which smoke or toxic gas makes the Control Room temporarily uninhabitable. In such a circumstance, the operators are instructed to trip the reactor as they leave the Control Room and proceed to the hot shutdown panel. From this location, the unit can safely be maintained in the hot standby condition until the Control Room can be reentered.

Any occurrence requiring the use of the hot shutdown panel would also involve activation of the TSC. Overall emergency response actions, including off-site communications, would be handled from the TSC, where the Site Emergency Coordinator would establish his headquarters. A licensed operator would be stationed at the hot shutdown panel.

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E-Plan Section 7 - Diablo Canyon Power Plant Emergency Plan Page 6 of 69 Emergency Facilities and Equipment E-Plan_Section_7u3r03.DOC 1209.1222 Rev 5.03 7.1.2.3 Habitability Objectives The hot shutdown panels are not intended for use in radiological release type accidents.

They are open to the room atmosphere in the "clean" (radiologically) portion of the Auxiliary Building. No special provisions have been made to assure habitability during radiological release emergencies.

7.1.2.4 Special Equipment Hot Shutdown Panel Instrumentation and Controls are listed below. Each panel has a telephone and an emergency UHF radio for operations frequency.

Auxiliary Feedwater

1.

AFW Pump discharge pressure

2.

AFW flow indication

3.

Turbine Driven AFW Pump Control Valve transfer switch

4.

Turbine Driven AFW Pump Control Valve control switch

5.

Turbine Driven AFW Pump Control Valve position indicator

6.

Motor Driven AFW Pump Control Valve controller

7.

Motor Driven AFW Pump Control Valve position indicator

8.

Turbine Driven AFW Pump steam supply valve control switch

9.

Turbine Driven AFW Pump steam supply valve transfer switch

10. Turbine Driven AFW Pump steam supply valve position indication

11. Motor Driven AFW Pump control switch

12. Motor Driven AFW Pump mode selector switch

13. Motor Driven AFW Pump START/STOP/LOCAL indicator Auxiliary Saltwater

1.

Auxiliary Saltwater Pump control switch

2.

Auxiliary Saltwater Pump mode selector switch

3.

Auxiliary Saltwater Pump START/STOP/LOCAL status Chemical and Volume Control System

1.

Centrifugal Charging Pump control switch

2.

Centrifugal Charging Pump mode selector switch

3.

Centrifugal Charging Pump START/STOP/LOCAL indicator

4.

Boric Acid Transfer Pump transfer

5.

Boric Acid Transfer Pump control switch

6.

Boric Acid Transfer Pump ON/OFF indicator

7.

Reactor Coolant Pump seal injection back pressure control valve controller

8.

Centrifugal Charging Pump flow control valve controller

9.

Reactor Coolant Pump seal injection back pressure control valve position indicator

10. Centrifugal Charging Pump flow control valve position indicator

11. Letdown Valve transfer switch

12. Letdown Valve control switch

13. Letdown Valve position indicator

14. Emergency borate valve transfer switch

15. Emergency borate valve control switch

16. Emergency borate valve position indicator

17. Emergency boric acid flow indicator

18. Volume Control Tank level indicator

19. Letdown flow indicator

20. Charging header flow indicator

21. Charging header pressure indicator

22. Reactor Coolant Pump Seal No. 1 pressure indicator

23. Cold leg loop charging motor operated valve 8107

24. Cold leg loop charging motor operated valve 8108

25. Charging to loop 4 cold leg air operated valve 8146

26. Refueling water supply to charging pump suction header valve 8805A pressure indicator (continued on next page)

E-Plan Section 7 - Diablo Canyon Power Plant Emergency Plan Page 7 of 69 Emergency Facilities and Equipment E-Plan_Section_7u3r03.DOC 1209.1222 Rev 5.03 Component Cooling Water

1.

Component Cooling Water Pump control switch

2.

Component Cooling Water Pump mode selector switch

3.

Component Cooling Water Pump START/STOP/LOCAL status Containment Fan Coolers

1.

Containment Fan Cooler transfer switch

2.

Containment Fan Cooler control switch

3.

Containment Fan Cooler ON/OFF status Makeup Water

1.

Condensate Storage Tank level indicator

2.

Raw Water Reservoir level indicator Reactor Coolant System

1.

Pressurizer liquid temperature indicator

2.

Pressurizer pressure indicator

3.

Pressurizer level indicator (2)

4.

Pressurizer heater transfer switch (2)

5.

Pressurizer heater control switch (2)

6.

Pressurizer heater breaker position indicator (2)

7.

Pressurizer Power Operated Relief Valve emergency close switch

8.

Hot Leg loop 4 pressure indicator

9.

Hot Leg loop 4 wide range temperature indicator

10. Cold Leg loop 4 wide range temperature indicator Steam Generators

1.

Pressure indicator

2.

Level indicator

3.

Steam dump valve controller

4.

Steam dump valve position indication Other

1.

Source Range neutron flux indicator (2)

2.

Site emergency alarm switch

3.

4kV vital bus voltage indicator

E-Plan Section 7 - Diablo Canyon Power Plant Emergency Plan Page 8 of 69 Emergency Facilities and Equipment E-Plan_Section_7u3r03.DOC 1209.1222 Rev 5.03 7.1.3 Dedicated Shutdown Panel 7.1.3.1 Location Each unit is provided with a dedicated shutdown panel located in the 100' elevation of the Auxiliary Building, as shown below.

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E-Plan Section 7 - Diablo Canyon Power Plant Emergency Plan Page 9 of 69 Emergency Facilities and Equipment E-Plan_Section_7u3r03.DOC 1209.1222 Rev 5.03 7.1.3.2 Emergency Function The dedicated shutdown panel in conjunction with the Hot Shutdown Panel is used if the unit must be taken from the hot shutdown condition to the cold shutdown condition from outside the Control Room. The dedicated shutdown panel contains sufficient instrumentation to follow and direct the cooldown operation and has controls for the pressurizer auxiliary spray control valve operation. The actual manipulation of other controls and valves would be done by operators at appropriate local stations.

Any occurrence requiring the use of the dedicated shutdown panel would also involve activating the TSC. Overall recovery actions, including off-site communications, would be handled from the TSC, where the Site Emergency Coordinator would establish his headquarters. An operator would be stationed at the dedicated shutdown panel.

7.1.3.3 Habitability Objectives The dedicated shutdown panels are not intended for use in radiological release type accidents. They are open to room atmosphere. No special provisions have been made to assure habitability during radiological emergencies.

7.1.3.4 Special Equipment Instruments found on each dedicated shutdown panel are listed below. PG&E phone jacks are located near each panel. Portable, hand held radio units may also be used for communications if required.

Steam Generators

1.

Level indicator (each steam generator)

Reactor Coolant System

1.

Temperature indicator - RCS Loop 1

2.

RCS Loop 1 Temperature selector switch

3.

RCS Loop 4 pressure indicator

4.

Pressurizer level indicator Chemical and Volume Control System

1.

Auxiliary spray valve transfer switch

2.

Auxiliary spray valve control switch

E-Plan Section 7 - Diablo Canyon Power Plant Emergency Plan Page 10 of 69 Emergency Facilities and Equipment E-Plan_Section_7u3r03.DOC 1209.1222 Rev 5.03 7.1.4 Technical Support Center (TSC) 7.1.4.1 Location and Description The purpose of the TSC is to provide a facility separate from but in close proximity to the Control Room. The TSC has the capability to display and transmit plant status to personnel responsible for engineering and management support of reactor operations in the event of an accident. This separate facility is needed to house data gathering equipment and the personnel required to assist in an emergency, primarily to reduce Control Room congestion.

The TSC serves both Units 1 and 2 and consists of six rooms. The TSC is sized to accommodate a minimum of 20 company and 5 NRC personnel. It is located at elevation 104' on the west side of the Unit 2 Turbine Building. It occupies space created as a result of the exterior concrete buttress seismic modification of the turbine building. The thickness of the concrete walls required to enclose the TSC were largely dictated by radiation shielding considerations and the structure is designed to the Hosgri seismic criteria.

The figure below shows the location of the TSC within the plant.

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E-Plan Section 7 - Diablo Canyon Power Plant Emergency Plan Page 11 of 69 Emergency Facilities and Equipment E-Plan_Section_7u3r03.DOC 1209.1222 Rev 5.03 The room layout and description from North to South is:

1) Command Center Desks, files and conference table provided for plant operations management, maintenance and technical staff personnel.

2) Operations Center Plant parameter data gathering and display equipment is provided for the use of technical staff in assessing the plant condition. The Emergency Response Facility Data System (ERFDS) is located in this room.

3) Computation Center Radiological and meteorological data gathering and display equipment and communications equipment is provided for the use of technical staff in assessing radiological conditions on and off-site.

4) Records Management and Reproduction Plant manuals, emergency plans and procedures, access to microfilm drawings and other records, and certain hard copy drawings are provided.

5) HVAC Room Heating, ventilating, and air-conditioning equipment for the TSC is located in this room.

6) Laboratory (Radiological Counting Room)

In a room adjacent to the TSC, radiological laboratory equipment for analysis of samples is provided.

The radiological counting room is intended to be a backup location for this type of work in the event the normal counting room is unavailable.

It is equipped with a multi-channel gamma ray spectroscopy system using a high-resolution intrinsic germanium detector.

E-Plan Section 7 - Diablo Canyon Power Plant Emergency Plan Page 12 of 69 Emergency Facilities and Equipment E-Plan_Section_7u3r03.DOC 1209.1222 Rev 5.03 The following figures show the general floor plan of the TSC.

(Continued Next Page)

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E-Plan Section 7 - Diablo Canyon Power Plant Emergency Plan Page 13 of 69 Emergency Facilities and Equipment E-Plan_Section_7u3r03.DOC 1209.1222 Rev 5.03 TSC Continued (Continued Next Page) 8

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E-Plan Section 7 - Diablo Canyon Power Plant Emergency Plan Page 14 of 69 Emergency Facilities and Equipment E-Plan_Section_7u3r03.DOC 1209.1222 Rev 5.03 TSC Continued LABORATORY 7.1.4.2 Emergency Function The TSC when activated serves as the headquarters for the Site Emergency Coordinator, Operations Advisor, Radiological Advisor, Agency/ENS Communicator, and Engineering Advisor and their staffs throughout an emergency. Provisions have also been made for the establishment of an on-site NRC emergency team co-located in the TSC.

Following activation of the TSC, the overall on-site assessment and recovery programs may be directed from this location. In addition, communications with off-site emergency response locations may be handled through the TSC.

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E-Plan Section 7 - Diablo Canyon Power Plant Emergency Plan Page 15 of 69 Emergency Facilities and Equipment E-Plan_Section_7u3r03.DOC 1209.1222 Rev 5.03 7.1.4.3 Habitability Objectives The TSC is designed to be habitable throughout the course of a design basis accident. The outside walls, with steel bulkhead doors, form an airtight perimeter. The TSC shielding and ventilation system is designed, consistent with the criteria for the Control Room, to limit post-accident doses inside the TSC to 5 rem TEDE for the duration of the accident, provided normal ventilation is switched to emergency ventilation within 2 hours2.314815e-5 days 5.555556e-4 hours 3.306878e-6 weeks 7.61e-7 months of the onset of a radiological release from a design basis accident. The TSC structure is designed to Hosgri seismic criteria.

The TSC is provided with its own ventilation system. The ventilation system is shown below.

Under accident conditions, the supply to the TSC is transferred to the Control Room pressurization system that maintains the TSC at a minimum positive pressure of 1/8" water gage. Intake air is conditioned and internally re-circulated through High Efficiency Particulate Air (HEPA) and charcoal filters within the TSC. The pressurization air filtrates from the TSC to the outside atmosphere. The pressurization portion of the ventilation system, including the duct work, redundant ventilation fans and filter units for the TSC, are designed to Seismic Class I criteria. The fans are powered from 480-volt non-vital buses but can be transferred to a 480-volt vital bus on either unit. The air conditioning units are not designed as seismic structures and are powered from normal AC sources.

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E-Plan Section 7 - Diablo Canyon Power Plant Emergency Plan Page 16 of 69 Emergency Facilities and Equipment E-Plan_Section_7u3r03.DOC 1209.1222 Rev 5.03 The TSC intake air is monitored by GM Detectors with alarm and control capabilities as part of the Control Room ventilation system. It also has area, particulate, iodine, and noble gas monitors with alarm capabilities, which may be backed up by portable equipment. The TSC is also provided with self-contained breathing apparatus and protective clothing for use in an emergency.

7.1.4.4 Special Equipment

1) Safety Parameter Display System (SPDS)

The SPDS was designed to the guidelines specified in NUREG-0696 and NUREG-0737 Supp. 1. It is part of the Emergency Response Facility Data System (ERFDS).

The SPDS for each unit is a computer-based system consisting of a data acquisition system, server computers, and display computers.

There are two high-resolution color SPDS monitors in the TSC. The displays available for the monitors allow TSC personnel to view plant parameters in real time ("SPDS display"), primary and secondary system mimics, and decision trees.

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E-Plan Section 7 - Diablo Canyon Power Plant Emergency Plan Page 17 of 69 Emergency Facilities and Equipment E-Plan_Section_7u3r03.DOC 1209.1222 Rev 5.03

2) Emergency Response Data System (ERDS)

The Emergency Response Data System is a direct near real-time electronic data link between a DCPP installed plant computer system and the Nuclear Regulatory Commission's Operations Center and Regional Office. This system provides for the automated transmission of a limited set of selected parameters and supplements the existing voice transmission over the NRC Virtual Private Network (VPN). Activation of this system occurs at an Alert or higher emergency classification.

3) Communication The TSC is provided with full radio and telephone communications capability.

4) Radiological Analysis The TSC contains radiological laboratory equipment. The TSC is also tied into the emergency radiological monitoring network.

5) Plant Process Computer The TSC is provided with a display terminal and a printer for each unit's Plant Process Computer (PPC). This provides the ability to monitor and print plant parameters acquired by the PPC.

6) Transient Recording System The ERFDS recall functionality is provided by the main plant historian hosted on the DMZ servers. The ERFDS data is available on at least two (2) display computers in the TSC.

7.1.5 Operational Support Center 7.1.5.1 Location and Description The Operational Support Center (OSC) provides locations functionally separate from the Control Room and Technical Support Center where designated support personnel assemble and await specific assignment during an emergency. The OSC command center is located in the buttress area on 104-foot elevation, adjacent to the west side of the Unit 2 Turbine Building and the south end of the TSC. Depending on the emergency events and plant conditions, personnel assigned to the OSC may be directed to assemble at the OSC command center, the 85' RCA Access Control, the site medical facility, and/or the firefighters equipment storage area on the 140' elevation. OSC assembly areas serve as team dispatch locations and contain a variety of emergency support equipment immediately available for emergency use. The OSC command center is equipped with a two-way auto ring-down phone line with priority access to other facilities. Alternate backup locations for the OSC command center include:

Elevation 140' Turbine Building northeast corner Administration Building (Room 215)

E-Plan Section 7 - Diablo Canyon Power Plant Emergency Plan Page 18 of 69 Emergency Facilities and Equipment E-Plan_Section_7u3r03.DOC 1209.1222 Rev 5.03 The general floor plan of the OSC command center is shown below.

7.1.5.2 Emergency Functions Provides a location for staging and dispatching trained emergency workers for assignment to:

Emergency maintenance, repair, and damage control.

Firefighting, search and rescue, and first aid.

Emergency sampling of plant fluids.

The OSC also functions as locations of selected emergency response equipment and provide facilities for personnel decontamination.

The OSC is intended to eliminate congestion in the Control Room and TSC. This area has a supervisor assigned in the emergency organization.

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E-Plan Section 7 - Diablo Canyon Power Plant Emergency Plan Page 19 of 69 Emergency Facilities and Equipment E-Plan_Section_7u3r03.DOC 1209.1222 Rev 5.03 7.1.5.3 Habitability Objectives The OSC command and assembly areas are not required to have special provisions for minimizing radiation exposure. Consequently, personnel in these areas may be evacuated under certain emergency situations. If evacuation were necessary, personnel required for emergency response would be relocated to another area. Personnel not immediately essential to the on-site response may be assembled in the Learning Services Building or released.

7.1.5.4 Emergency Equipment and Supplies The OSC command center has a two-way auto ring-down phone line with priority access to the TSC and Control Room and has a PBX telephone with emergency facility priority access to commercial telephone circuits. In addition, there is access to portable radio equipment.

The OSC has ample supplies of respiratory protection equipment, protective clothing, monitoring instruments and other emergency response equipment.

7.1.6 Emergency Operations Facility 7.1.6.1 Location and Description The Emergency Operations Facility (EOF) and County Emergency Operations Center (EOC) are located approximately 11 miles northeast of the Diablo Canyon Power Plant. See figure below.

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E-Plan Section 7 - Diablo Canyon Power Plant Emergency Plan Page 20 of 69 Emergency Facilities and Equipment E-Plan_Section_7u3r03.DOC 1209.1222 Rev 5.03 The San Luis Obispo County Sheriff's watch commander and dispatch center occupy this building on a 24-hour basis. The first floor of the building provides space for the County EOC, and the Sheriff's watch commander and dispatch center. See figure below.

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E-Plan Section 7 - Diablo Canyon Power Plant Emergency Plan Page 21 of 69 Emergency Facilities and Equipment E-Plan_Section_7u3r03.DOC 1209.1222 Rev 5.03 The second floor houses the EOF, the Unified Dose Assessment Center (UDAC) and office space for the State of California Office of Emergency Services (CA OES), the Nuclear Regulatory Commission (NRC), the Federal Emergency Management Agency (FEMA) and other responding Federal agencies. See figure below.

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E-Plan Section 7 - Diablo Canyon Power Plant Emergency Plan Page 22 of 69 Emergency Facilities and Equipment E-Plan_Section_7u3r03.DOC 1209.1222 Rev 5.03 The Joint Information Center (JIC) off Highway 1 on Kansas Avenue is approximately 1/4 mile from the EOF. Utility and county public information personnel perform various functions from this facility. The JIC has a briefing room that includes office space for public information officers and a phone assistance center. See figure below.

7.1.6.2 Emergency Function The EOF when activated serves as the headquarters for the Emergency Director, Advisor to the County and UDAC. The EOF acts as the interface between the Company/County, and the public. The Emergency Director and his staff utilize the EOF as their headquarters to provide overall direction of the recovery effort for Company response personnel for a declared emergency.

7.1.6.3 Habitability Objectives The distance from the plant to the EOF, the very low frequency of winds in the direction from the site to this location, and the shielding and turbulence produced by the mountainous terrain between the two locations makes special habitability provisions unnecessary.

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E-Plan Section 7 - Diablo Canyon Power Plant Emergency Plan Page 23 of 69 Emergency Facilities and Equipment E-Plan_Section_7u3r03.DOC 1209.1222 Rev 5.03 7.1.6.4 Special Equipment The EOF is provided with extensive telephone and radio communications capability.

Communication systems in the building are redundant and include microwave links to DCPP and the General Office.

The EOF is provided with computer monitors that can display plant parameters received by the Emergency Response Facility Data System (ERFDS). The ERFDS recall functionality is provided by the Transient Recorder System (TRS). The ERFDS data is available on at least two (2) display computers in the EOF.

The EOF is also a central controlling station for the Emergency Assessment and Response System (EARS) used for off-site dose assessment.

The EOF/EOC building is protected by a Wet Pipe Fire Sprinkler System.

Management coordination between the TSC, the EOF and EOC is assured by reliable telephone communications. Telephones at key locations in the EOF/EOC are equipped for building or area paging. Backup electrical power is supplied from a 100-kW diesel-fueled emergency generator.

Resource materials available in the EOF include:

Plant procedures Emergency Plan and implementing procedures Maps with sectors indicated (10 and 50 miles)

Air Sampler Portable Count Rate and Dose Rate Survey Instruments Plant electrical, piping and instrumentation drawings The EOF is provided with a display terminal and printer for each unit's Plant Process Computer (PPC). This provides the ability to monitor and print plant parameters acquired by the PPC.

E-Plan Section 7 - Diablo Canyon Power Plant Emergency Plan Page 24 of 69 Emergency Facilities and Equipment E-Plan_Section_7u3r03.DOC 1209.1222 Rev 5.03 7.1.6.5 PG&E Corporate Interface The Government Relations Coordinator has direct contact with the Company Incident Commander in the PG&E EOC and the Emergency Director in the EOF. The Government Relations Coordinator is provided with communications from the Company telephone system and WAN links to Diablo Canyon.

7.1.7 PG&E Energy Education Center 7.1.7.1 Location and Description The PG&E Energy Education Center is located 12 road miles from DCPP in an ESE direction. The Energy Education Center is approximately 7,000 square feet. The floor plan of the Energy Education Center and adjacent decontamination shower facility is shown below.

7.1.7.2 Emergency Function The Energy Education Center is the preferred location to gather on-site personnel in the event of a site evacuation, providing meteorological conditions permit. The Energy Education Center can also be used as a headquarters, staging area, and personnel decontamination center. Finally, the Energy Education Center is the first choice for a backup Emergency Operations Facility.

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E-Plan Section 7 - Diablo Canyon Power Plant Emergency Plan Page 25 of 69 Emergency Facilities and Equipment E-Plan_Section_7u3r03.DOC 1209.1222 Rev 5.03 7.1.7.3 Habitability Objectives No special provisions have been provided to enhance habitability for radiological emergencies. The Energy Education Center has lavatory and kitchen facilities.

7.1.7.4 Special Equipment The Energy Education Center is provided with a base station emergency radio as well as PG&E and Public Switched Telephone Network (PSTN) telephones. It also has two decontamination showers and related supplies, including replacement clothing.

7.1.8 San Luis Obispo Service Center 7.1.8.1 Location and Description The San Luis Obispo Service Center is located in San Luis Obispo approximately 10 miles east of Diablo Canyon. The Service Center serves as the local headquarters for the Los Padres division of PG&E. There is space for about 15 persons in the adjoining Division Emergency Center. Around the clock access to the San Luis Obispo Service Center is available.

7.1.8.2 Emergency Function The San Luis Obispo Service Center is a back-up off-site assembly area in the event of a site evacuation. It could also be used as a backup location for the EOF. It also serves as the backup location for activating the Early Warning System EWS.

7.1.8.3 Habitability Objectives No special provisions have been provided to enhance habitability for radiological emergencies. The San Luis Obispo Service Center has lavatory and limited kitchen facilities.

7.1.8.4 Special Equipment The San Luis Obispo Service Center is provided with a base station emergency radio as well as PG&E and PSTN telephones.

E-Plan Section 7 - Diablo Canyon Power Plant Emergency Plan Page 26 of 69 Emergency Facilities and Equipment E-Plan_Section_7u3r03.DOC 1209.1222 Rev 5.03 7.2 COMMUNICATIONS EQUIPMENT DCPP is provided with two categories of telephone networks: "Operations" plant telephone network (OPTN) and "Admin" plant telephone network (APTN). All plant telephones on these company telephone networks (whether Operations or Admin) are capable of communicating with other company telephones, including other plant telephones located at on-site and off-site emergency response facilities. The communications equipment described in this section deals with the OPTN which provides the DCPP E-Plan communications capabilities.

7.2.1 Plant Telephone Network The Operations Plant Telephone Network (OPTN) is part of the Company owned and operated telecommunications system, which can be used for routine inter-company communications. Any plant telephone on the company telephone network is capable of communicating with other company telephones, including other plant telephones located at on-site and off-site emergency response facilities. The OPTN is designed with a highly redundant and resilient architecture. During an emergency, the OPTN is the primary communication method for voice communications between emergency response facilities.

Plant telephones are located at various locations throughout the plant, including the Control Room, Hot Shutdown panels, Security Building, laboratories, shops, Technical Support Center, Operational Support Center, Emergency Operations Facility, Alternate Emergency Response Facilities in San Luis Obispo, and other work and equipment operating areas. In addition, phone jacks are located in the Control Room and at other strategic operating locations throughout the plant. Each phone jack is associated with a telephone number, and when used in conjunction with a portable telephone unit, can communicate with any other telephone in the power plant as well as the company telephone network.

The OPTN Private Branch Exchange (PBX) consists of redundant and resilient core switching systems and gateways. The equipment is geographically distributed and designed with no single points of failure. The core switching systems located in Power Block Com Room 1 and the Building 102 Communications Room are each capable of automatically handling all call traffic should the other system fail. The EOF and Alternate TSC-OSC are part of the OPTN infrastructure.

External Public Switched Telephone network (PSTN) telephone calls to and from the OPTN are processed as follows: For DCPP and Alternate TSC-OSC phones, the calls are via redundant Telco Session Initiation Protocol (SIP) trunks over two independent route-diversified trunks; and for EOF phones the calls are via redundant Telco ISDN-PRI T1 trunks. In case of the remote possibility of both DCPP SIP trunks to the PSTN failing at the same time, the OPTN can be rerouted to the PG&E central datacenter PSTN SIP trunks.

Internal PG&E calls to and from the OPTN to and from sites outside the DCPP area are routed via route-diversified SIP trunks using the resilient PG&E Wide Area Network and are processed by the PG&E private voice network.

The OPTN allows for two-way auto ring-down phone lines with priority access. The ring-down function rings a phone or group of phones when one of the phones goes off-hook. Priority access ensures selected phone lines take priority over other call traffic.

E-Plan Section 7 - Diablo Canyon Power Plant Emergency Plan Page 27 of 69 Emergency Facilities and Equipment E-Plan_Section_7u3r03.DOC 1209.1222 Rev 5.03 Also, off-premise extensions (i.e., plant telephones physically located off-site) provide unrestricted access to the OPTN. These extensions are at locations throughout San Luis Obispo County.

The OPTN has several built-in conference call features to allow multiple callers to be connected to the same phone call. One such line is set aside for emergency use and is normally initiated following the sounding of the emergency signal or the fire alarm.

Numerous personnel who pick up a company phone and dial a special conference call number will be included in the call.

There will be an available telephone line at the ISFSI to report any emergencies. During cask handling and transportation both security and operations personnel are present with plant radio systems. During normal storage conditions security in the vicinity of the ISFSI is equipped with plant radio systems.

7.2.2 Communication Interface with Public Switched Telephone Network (PSTN)

The DCPP Emergency Response Facilities are served by two redundant shared Session Initiation Protocol (SIP) trunks for handling both, the Administrative and Emergency call traffic.

The OPTN has direct dial lines which allow direct access to plant extensions from the PSTN. These trunk lines come in via two separate paths for redundancy. All service from the PSTN to the OPTN is distributed among the two PBX nodes. Separate redundant trunks are provided to the EOF for handling the Administrative and Emergency call traffic. Separate PSTN lines come into the plant for operational use. One line is mounted on the Senior Control Operator's desk in the Control Room to call out from the Control Room in an emergency. A second line runs to the site vice president's office, a third line to the Security Supervisor's office, a fourth line is dedicated to the Central Alarm Station (CAS) and the fifth goes to the Secondary Alarm Station (SAS). These numbers are unlisted to ensure they will not be tied up.

7.2.3 Power Supplies Power is provided by a battery charger where the charger supplies the load and float current for the batteries. The AC for the chargers for the primary and backup telephone system servers located in the Unit 1 communications room are supplied from redundant sources.

The AC for the chargers for the primary and backup telephone system servers located in the Building 102 communications room are supplied from a single source. The battery chargers are load-sharing units. The mountain top repeater for the microwave systems are DC powered, employing AC powered battery chargers with batteries which float on the line.

An automatic emergency generator at each repeater site supplies the charger if normal AC power is lost.

E-Plan Section 7 - Diablo Canyon Power Plant Emergency Plan Page 28 of 69 Emergency Facilities and Equipment E-Plan_Section_7u3r03.DOC 1209.1222 Rev 5.03 7.2.4 Control Room Telephone Communication Numerous phone lines link the Control Room to the plant PBX nodes for redundancy.

In addition, there are several special provisions including:

Two-way auto ring-down lines from the Control Room and Technical Support Center (TSC) to the California Office of Emergency Services (CA OES) located in Sacramento, the Emergency Operations Facility (EOF) and the Sheriff's Department in San Luis Obispo.

Dedicated lines that go from the Control Room and TSC to NRC Headquarters in Bethesda, Maryland (NRC FTS telephone).

Two-way auto ring-down phones with priority access from the Operational Support Center (OSC) and the TSC to the Control Room.

7.2.5 Telephone Communications for the Technical Support Center (TSC)

The TSC has numerous phone lines to the plant PBX network. Additional telephone communications for the TSC are provided by a PBX multi-line phone. From this phone, all incoming calls to the plant emergency phone number can be answered and/or transferred to personnel designated for response. The phone can also be used to obtain an outgoing trunk for use by the TSC phones.

The TSC has two-way auto ring-down phone lines with priority access to the Control Room, Operational Support Center, Emergency Operations Facility, the San Luis Obispo County Sheriff's Department and the California Office of Emergency Services (CA OES). The TSC also has a standard unlisted telephone from the NRC FTS telephone system. This telephone provides direct access to an off-site location in the event the Company exchange system is not available.

7.2.6 Operational Support Center Telephone Communications The Operational Support Center (OSC) has a PBX line and a two-way auto ring-down phone line with priority access to the Control Room and the TSC. In addition, the OSC has access to several telephone extensions installed for routine use.

7.2.7 Telephone Communication at the Emergency Operations Facility (EOF)

The Emergency Operations Facility (EOF) and County Emergency Operations Center (EOC) are co-located near the San Luis Obispo County Sheriff's Department. Included in the building is the County Sheriff's Dispatch Center, which has a two-way auto ring-down phone line with priority access to the Control Room and TSC. This phone line can be accessed from each end.

There is an Off-Premise Extension (OPX), in the EOC Command Center. This extension provides unrestricted access to the power plant, via company owned microwave paths, should the local PSTN be congested.

Communication circuits for the EOF include telephone trunk lines from the DCPP PBX and additional unlisted telephone lines from the PSTN Network. The NRC FTS telephone lines also tie into the EOF.

E-Plan Section 7 - Diablo Canyon Power Plant Emergency Plan Page 29 of 69 Emergency Facilities and Equipment E-Plan_Section_7u3r03.DOC 1209.1222 Rev 5.03 Communications between the plant and French Hospital, San Luis Obispo, can be channeled through the EOF. Normal communications will be via commercial telephone.

Portable radios may also be used for emergency communications between French Hospital the Plant and EOF.

7.2.8 Data Communication System The data communication system contains many dedicated circuits that are used in collecting and distributing information. The data network is divided into four areas: 1) records management, 2) time-share operation, 3) operational computer, and 4) health physics.

The majority of the data links radiate from the TSC, which has connectivity to the PG&E LAN/WAN for distribution to many locations in the PG&E network including the PG&E General Office in San Francisco and the EOF.

7.2.9 Nuclear Regulatory Commission Communication Lines The Nuclear Regulatory Commission (NRC) installed a dedicated telephone system for their use at Diablo Canyon Power Plant.

This system, the Federal Telecommunications System (FTS), provides a separate government network for all the essential communications functions anticipated during an emergency. These essential functions are summarized as follows:

1) Emergency Notification System (ENS): Initial notification by the licensee, as well as ongoing information on plant systems, status, and parameters. The ENS telephones are located in the TSC, Control Room, and EOF.

2) Health Physics Network (HPN): Communication with the licensee on radiological conditions (in-plant and off-site) and meteorological conditions, as well as their assessments of trends and need for protective measures on-site and off-site. The HPN telephones are located in the TSC and EOF.

3) Reactor Safety Counterpart Link (RSCL): This is the channel by which the NRC Operations Center supports NRC reactor safety personnel at the site. In addition, this link may be also used for discussion between the Reactor Safety Team Director and licensee plant management at the site. The RSCL telephones are located in the TSC and EOF.

4) Protective Measures Counterpart Link (PMCL): This is the channel by which the NRC Operations Center supports NRC protective measures personnel at the site. In addition, this link may also be used for discussion between the Protective Measures Team Director and licensee plant management at the site. The PMCL telephones are located in the TSC and EOF.

5) Management Counterpart Link (MCL): Established for any internal discussions between the Executive Team Director or Executive Team members and the NRC Director of Site Operations or top-level licensee management at the site. The MCL telephone is located in the EOF.

E-Plan Section 7 - Diablo Canyon Power Plant Emergency Plan Page 30 of 69 Emergency Facilities and Equipment E-Plan_Section_7u3r03.DOC 1209.1222 Rev 5.03

6) Local Area Network (LAN) Access: Established for access to any of the products or services provided on the Operations Center's local area network. This includes technical projections, press releases, status reports, E-Mail, and various computerized analytical tools. The LAN line is located in the EOF.

Emergency Response Data System (ERDS): The ERDS application transmits plant data to the NRC during emergencies. This application runs on the redundant DMZ servers and is activated via remote login. The ERDS application connects to an NRC provided and owned Virtual Private Network (VPN) device via the redundant PDN firewall, the DCPP LAN and the PG&E LAN. Upon activation, ERDS transmits specific plant accident parameters as encrypted data to the NRC Emergency Response Center via the secure internet VPN connection.

7.2.10 Satellite Telephones Satellite telephones are available for use for intercommunications between emergency response facilities, along with communicating to Field Monitoring Teams.

7.2.11 UHF and VHF Radio System 7.2.11.1 General The plant has several voice radio systems available for emergency response use in the UHF (Ultrahigh Frequency) and the VHF (Very High Frequency) radio-frequency bands. In the shorter range UHF band, the plant has voice channels available for Plant Operations and Security use, so that personnel from each department can simultaneously utilize radio communications to perform their duties without interfering with or being interfered with by each other.

The Plant can also communicate by voice radio on VHF channels assigned for Marine use and VHF Aeronautical channel (122.9 MHz). A channel is also available for use by CAL FIRE/County Fire for firefighting.

7.2.11.2 Plant UHF Radio Systems The DCPP UHF radio systems can maintain point-to-point communications between the Control Room, the San Luis Obispo Service Center, the PG&E Energy Education Center, the Port San Luis Gate, the San Luis Obispo County Sheriff's Dispatch Center, Technical Support Center, the Emergency Operations Facility, the Security Department, in addition to satellite telephones. Field Monitoring Teams have mobile radios and hand-held radios available for communication to the Emergency Operations Facility using the County Brown radio network.

The plant UHF radio system provides direct radio unit to radio unit usage around the Diablo Canyon site and between emergency response facilities which is independent of the telephone systems. The base station receivers located at the Emergency Operations Center, the PG&E Energy Education Center and San Luis Obispo Service Center are equipped for selective calling. The normally silenced receivers may be selectively keyed by the plant Control Room, TSC, or County EOC. This feature may be cut out on the base station receivers to permit continuous, unrestricted monitoring of all units during emergency situations.

E-Plan Section 7 - Diablo Canyon Power Plant Emergency Plan Page 31 of 69 Emergency Facilities and Equipment E-Plan_Section_7u3r03.DOC 1209.1222 Rev 5.03 The Communications Room base stations are powered from battery backed DC power supplies which are fed from plant vital AC power. The radio system power supply is independent of all other non-vital 48 VDC fed equipment in the room.

Control consoles for this system are located in the Control Room, Technical Support Center, and Emergency Operations Facility.

Additionally, in-plant antenna arrays on radio systems make portable radio communications possible throughout the plant.

7.2.11.3 VHF Systems The VHF radio system is the Company's Los Padres District Commercial operating network that covers from King City in the north to Solvang in the south. District Company radio-equipped vehicles within the district are normally dispatched by one of the several base stations in this network. The Control Room, TSC, and EOF are equipped with VHF radio consoles that can also be used for dispatch.

7.2.12 Joint Information Center Telephone service for the Joint Information Center is provided primarily by the PSTN Company with some service from the PG&E network.

7.2.13 News Services Office San Francisco Telephone service in the News Services Office in San Francisco is provided primarily by the PSTN Company.

7.3 ON-SITE SIGNALS AND ALARMS Several signals and alarms are provided to alert plant personnel to a possible emergency situation. These include:

7.3.1 Site Emergency Signal The site emergency signal is a very loud sound produced by electronic warblers placed at numerous locations throughout the plant. The site emergency signal and containment evacuation signal are the only plant signals that are produced by an electronic warbler. The site emergency signal sound is a rapid rise in pitch followed by a slower drop. The cycle repeats itself as long as the signal is energized.

The site emergency signal is initiated manually by the Control Room Operator. Control switches are provided at the Control Room Consoles and the Hot Shutdown Panels for Units 1 and 2. Once initiated, the signal will continue until it is manually turned off.

Due to high background noise levels, flashing red lights as well as a warbler are included in the containment buildings and in some locations of the turbine and auxiliary buildings.

The response of on-site personnel to the site emergency signal, other signals and alarms is discussed in Section 6 of the Emergency Plan.

E-Plan Section 7 - Diablo Canyon Power Plant Emergency Plan Page 32 of 69 Emergency Facilities and Equipment E-Plan_Section_7u3r03.DOC 1209.1222 Rev 5.03 7.3.2 Fire Signal The fire signal is produced by sirens placed at numerous locations throughout the plant. The fire signal is a steady tone for thirty seconds.

The fire signal may be initiated from any PG&E dial telephone in the plant. A three-digit number is dialed, and the caller is routed to the Control Room where the Unit 1 operator can filter the call and verify the need to sound the Fire Signal. If required, the operator actuates the signal. If the operator is delayed from answering, the caller will route to the Emergency Bridge after four rings. The Fire Signal is actuated as soon as the call enters the Bridge and sounds for 30 seconds.

The bridge has multiple ports on the initiation side that will allow multiple callers the ability to report a fire or other emergency. The answer side of the bridge has multiple ports so that Operations, Fire and Medical personnel can listen in to see if they need to respond to the fire/emergency.

7.3.3 Criticality Monitor Signal The criticality monitors are area monitors over the spent fuel pool and the new fuel storage area. These instruments generate an evacuation signal if radiation levels exceed the setpoint value.

The criticality monitor signal consists of horns mounted so that they are audible throughout the fuel handling building and in the hot shop area as well as flashing red lights which are mounted near the doors to the fuel handling building on the +85', +91', and +115' elevations.

Flashing red lights over the doors in the hot shop indicate which fuel handling building has been alarmed. Units 1 and 2 have similar systems.

7.3.4 Containment Evacuation Signal The containment evacuation signal utilizes the same signaling equipment within the containment as is used for the site emergency signal. The electronic warbler on the +140' elevation and flashing red lights on the +91' and +115' elevations are utilized. In addition, a flashing red light is located at the entrance to each personnel airlock.

The containment evacuation alarm is manually actuated from the control console, or from switches mounted in the containment by each airlock. This signal is independent for each unit. The containment evacuation alarm will continue until manually reset in the Control Room.

E-Plan Section 7 - Diablo Canyon Power Plant Emergency Plan Page 33 of 69 Emergency Facilities and Equipment E-Plan_Section_7u3r03.DOC 1209.1222 Rev 5.03 7.4 OFF-SITE EARLY WARNING SYSTEM An Early Warning System (EWS) is installed to provide prompt alerting of the public in the event of a major emergency at Diablo Canyon Power Plant. The EWS, used in conjunction with radio and TV broadcasts, allows instructions, information, and necessary actions to be immediately communicated to the general public.

The EWS is designed to meet the requirements of NUREG-0654/FEMA-REP-1 and employs guidelines set forth in FEMA REP-10, "Guide for the Evaluation of Alert and Notification Systems for Nuclear Power Plants."

The EWS design objective specified in Appendix 3 of NUREG-0654 is to provide an alert signal within 15 minutes. This signal is initiated in conjunction with broadcasts providing notification and informational or instructional messages to the population on an area-wide basis throughout the NRC minimum ten-mile radius EPZ. The initial alerting system is designed to assure direct coverage of essentially 100 percent of the population within five miles of the plant site. The SLO County/Cities Nuclear Power Plant Emergency Response Plan provides arrangements to assure 100 percent coverage of the population within the NRC designated plume exposure EPZ.

7.4.1 Outdoor Warning The portion of the EWS providing initial outdoor alerting for the public to turn on their radios consists primarily of a siren system. Alerting provisions for groups that require special contact arrangements and for craft-at-sea are included in the SLO County/Cities Nuclear Power Plant Emergency Response Plan.

The approach taken in designing the siren system is based on the criteria set forth in documents noted above and on substantial practical field experience by the manufacturer.

Because of the many factors that can greatly alter sound propagation from a warning device toward a potential listener, the design criteria set forth in the documents identified above are conservative in theoretical terms.

The system employs several siren sizes to attain the desired coverage. Choice of smaller sirens is often dictated by terrain or sparsely populated or isolated areas.

The number of sirens employed in the system was determined by choosing the siren providing the desired radius of coverage deemed necessary to achieve an adequate dissonant alerting signal level.

E-Plan Section 7 - Diablo Canyon Power Plant Emergency Plan Page 34 of 69 Emergency Facilities and Equipment E-Plan_Section_7u3r03.DOC 1209.1222 Rev 5.03 7.4.2 Indoor Warning Large groups of people may be gathered together inside structures. Such structures may preclude detection of the warning provided by the outdoor warning system or may present particular response problems. The Emergency Alert System (EAS) is the primary means of providing indoor warning to residents of the DCPP Emergency Planning Zone.

San Luis Obispo County also has approximately 100 tone alert monitor receivers in schools, hospitals, special care facilities, and other institutions to alert them with special instructions.

No tone alert monitor receivers are distributed to residential members of the public. Control consoles for activation of these receivers are located in the Sheriff's Dispatch Center in the EOC/EOF Building.

A pager is assigned to an on-call county emergency responder. The pager is activated from the Sheriff's Dispatch Center or via any telephone system. The county uses cellular technology to contact additional county emergency response personnel including governmental officials and members of the Environmental Health field monitoring teams.

7.4.3 Early Warning System-Area of Coverage The coverage area of the EWS has been extended beyond the ten-mile radius to include the approximately 18 miles north and 22 miles south of the plant. The design coverage objective is based on the following assumptions:

1) All populated areas within the outdoor siren coverage range will be alerted with a 60 dB or greater siren signal.

2) All public institutions and business operations will have and use means for communicating specific instructions to their personnel when they hear the siren signal.

The large area within the five-mile radius of the plant has limited siren sites since it is rugged wilderness and, largely, inaccessible to the public. A portion is identified as a state park with jeep trails. The County Emergency Plan provides special notification arrangements in this area.

E-Plan Section 7 - Diablo Canyon Power Plant Emergency Plan Page 35 of 69 Emergency Facilities and Equipment E-Plan_Section_7u3r03.DOC 1209.1222 Rev 5.03 There are 131 area sirens of various sizes used in the EWS. The siren locations and approximate areas of coverage are illustrated below.

101

(+/-) (£) (+/-)

(+/-)

san Luis

(+/-) Obispo 1

(+/-)

E-Plan Section 7 - Diablo Canyon Power Plant Emergency Plan Page 36 of 69 Emergency Facilities and Equipment E-Plan_Section_7u3r03.DOC 1209.1222 Rev 5.03 7.4.4 Siren Location The location of each siren was determined in accordance with ambient noise measurements and other considerations.

A site survey to measure ambient noise levels was made in the general area of each proposed siren site. These measurements, the topography, the terrain coverage and the population density formed the basis for choosing the siren setting. A substantial portion of the population covered by each siren will be in a sound field that is 10 dB above the average daytime ambient background noise. Each siren site was chosen to minimize the biological, cultural and human impacts consistent with proper acoustic coverage.

7.4.5 Early Warning System Activation The EWS sirens are activated by a Supervisory Control and Data Acquisition (SCADA) control system with primary and backup activation centers. San Luis Obispo County Emergency Operations Center personnel are responsible for system activation. The SCADA control system sends commands to and receives data from the sirens via radio signals from radio base stations such as Tassajera, Black Butte, Davis Peak, and Arroyo Grande Hill.

Most of the sirens can be reached from at least two of the base stations.

The SLO County Sheriff Watch Commander, is responsible for EWS activation upon authorization as described in the SLO County/Cities Nuclear Power Plant Emergency Response Plan. The sirens can be activated simultaneously, individually or in designated groups. Security provisions against inadvertent operation of the EWS are built into the SCADA control system.

Should any siren fail to activate, physical means for backup alert and notification are available as described in the FEMA approved alert and notification design report.

7.5 ON-SITE ASSESSMENT SYSTEMS AND EQUIPMENT 7.5.1 Seismic Monitoring System (SMS)

In the event of an earthquake, the mitigating actions required are determined by the magnitude of the earthquake. The seismic instrumentation, as described in Section 3 of the FSAR, includes the equipment used as the primary means for timely determination of the magnitude of an earthquake. Emergency classification is based on the earthquake magnitude displayed on the Earthquake Force Monitor (EFM) located in the control room. In the event of an earthquake measuring greater than 0.01 g on the acceleration recorder at 89' elevation of the Unit 1 containment structure, or on the free-field acceleration recorder located north of Unit 1 containment, an annunciator will alert the control room operators and peak ground acceleration (g) values from the seismic monitors will be displayed on the EFM. The Unit 1 acceleration recorders represent on-site ground motion for both Units 1 and 2.

E-Plan Section 7 - Diablo Canyon Power Plant Emergency Plan Page 37 of 69 Emergency Facilities and Equipment E-Plan_Section_7u3r03.DOC 1209.1222 Rev 5.03 7.5.2 Meteorological Systems 7.5.2.1 Measurement Systems As shown in FSAR Figure 2.3-4, there are two meteorological (Met) towers located on-site and seven supplemental Met towers that are located off-site within the vicinity of the plant.

The seven supplemental (10-meter) Met towers (Pt. Buchon, Los Osos, Foothill, Service Center, Information Center, Grover Beach, and Davis Peak) have meteorological instrumentation run exclusively for DCPP by PG&E. In addition, two other off-site Met locations (Templeton and Santa Maria) are run by PG&E for other projects, but have data available for emergency response. Also available are two 10-meter tower sites (Morro Bay and Grover Beach) that are operated by the San Luis Obispo County Air Pollution Control District and the aviation weather observations at the county airport.

The seven supplemental PG&E surface (10-meter) Met towers provide consecutive 15-minute averages of wind speed, wind direction and wind direction standard deviation (sigma theta) based on a 1-2 second sampling interval. The APCD 10-meter sites provide hourly averages of wind speed and direction based on a 1-second sampling interval at Grover Beach and Morro Bay. The Weather Service/Airport site provides standard airways sequence data. All data from the PG&E sites are available in real time at the EOF by PG&E Wide Area Network and dial-up modem.

Site meteorological conditions are monitored continuously by the two on-site meteorological towers that are in close proximity to the plant structures. A primary 76-meter tower system is located about 200 meters SSW of the plant structures. Measurements have been taken and used from this site since July 1967. The following data are provided:

Wind speed, wind direction, wind direction standard deviation at the 10-meter and 76-meter levels Temperature at 10-meters, 46-meters, and 76-meters Temperature difference (delta T) between 10-meter and 46-meter and between 10-meter and 76-meter levels Precipitation and dew point near the tower base 10-meter, 46-meter and 76-meter aspirator frequency Meteorological data at the primary site is recorded continuously on a multi-point recorder and digitized electronically at least once every two-seconds. A primary meteorological digital processor is located in the primary meteorological facility that communicates data to redundant meteorological computers located in the Technical Support Center (TSC)

(FSAR 2.3.4). Fifteen-minute mean values are computed from the transmitted data by the TSC meteorological computers.

The redundant TSC meteorological computers provide data to redundant meteorological data servers which provide Unit 1 & 2 network communication of the 15 minute values to the Plant Data Network (PDN), the Emergency Assessment and Response System (EARS), the Plant Process Computers (PPC) and select meteorological parameters to the Emergency Response Data System (ERDS).

E-Plan Section 7 - Diablo Canyon Power Plant Emergency Plan Page 38 of 69 Emergency Facilities and Equipment E-Plan_Section_7u3r03.DOC 1209.1222 Rev 5.03 A backup 60-meter tower system is located about 1.2 KM ESE of the primary tower with two levels of measurement at 10-meters and 60-meters. Measurement, reduction, storage, recording and transmission of backup tower data are continuous with and similar to that of the primary system. The backup Met system measures (FSAR 2.3.4.):

Aspirator frequency.

Battery condition.

Temperature difference (delta T) between 10-meter and 60-meter It does not measure temperature at the intermediate level and the measurement of precipitation and dew point are available only at the primary site. A backup meteorological digital processor is located in the backup meteorological facility that communicates data to redundant meteorological computers located in the TSC (FSAR 2.3.4). Failure of either the primary or backup systems will be shown on both the Unit 1 and Unit 2 PPC alarm screens and alarm printers. Power for the primary system is derived from the Unit 1 480 volt non vital bus with automatic switching in the event of failure to the Unit 2 480 volt bus. The primary microprocessor and meteorological sensors are backed up by an 8-hour battery source. The backup meteorological system is supplied AC power from the underground 12kV startup bus with backup power in the form of a one-week battery source.

In the event of failure of both the primary and backup electronic measurement systems, a portable weather instrumentation package is available for deployment. This instrumentation package is battery powered for independent operation and provides recording of wind speed, wind direction and ambient temperature, which can be used to estimate off-site effects through manual calculation procedures in the event of failure of the automated assessment process. Should its use be required, (/Q would be determined by using wind speed and a stability category based on wind direction range. (See App. 2.3I of Reference 3).

These measurement systems have been upgraded continually and currently satisfy all requirements of NUREG-0737, NUREG-0654 and Regulatory Guide 1.23 of the NRC.

7.5.2.2 Modeling Systems Dispersion modeling software is operational on the Meteorological tower on-site computer systems to provide required inputs to the Dose Calculation Methodology. The model in use is consistent with characteristics of a Class A model as required by NUREG-0654 and 0737.

Normalized ground level plume centerline concentration (dilution) values (/Q) are computed by the model as 15-minute means for ten downwind distances ranging from 0.8 to 100 kilometers. Lateral and vertical plume dimension (sigma y and sigma z) are also provided for each of the same downwind distances. Concentration and plume dimension data generated by the model provide the necessary relationships between effluent monitor readings and off-site exposure and contamination levels. These data are distributed to recipients in the same manner specified earlier for meteorological measurement data.

Additional details on the meteorological measurement and modeling systems are provided in Section 2.3 of Reference 3.

E-Plan Section 7 - Diablo Canyon Power Plant Emergency Plan Page 39 of 69 Emergency Facilities and Equipment E-Plan_Section_7u3r03.DOC 1209.1222 Rev 5.03 7.5.3 Area Radiation Monitoring System The area radiation monitoring system is a system of permanently installed radiation monitoring detectors located throughout the plant. Monitors and locations are listed below.

The purpose is to measure the ambient radiation level in each monitored area. Such information is used both for personnel radiation protection purposes and to alert personnel to the release of radioactive materials within a plant structure.

This system includes G-M or Ion chamber detectors that are permanently mounted. Each of these instruments has a readout at the detector and in the Control Room, except as noted below. If an adjustable high radiation setpoint is reached, audible and visual alarms are sounded both at the detector and in the Control Room. The GM detector instruments are calibrated in mR/hr and have a range of 0.1 up to 10,000 mR/hr. The instruments will remain pegged full scale at radiation levels beyond the full-scale value. These instruments are powered from emergency power sources and would be available for post-accident use (except as noted below).

E-Plan Section 7 - Diablo Canyon Power Plant Emergency Plan Page 40 of 69 Emergency Facilities and Equipment E-Plan_Section_7u3r03.DOC 1209.1222 Rev 5.03 Additional detectors have been added to augment the original system of GM detectors in order to provide area monitoring where new spaces or specialized equipment have been added. The additional areas where these detectors have been added are in the Technical Support Center (G-M Type), and in the Containment Structures (Ion-Chamber Type).

Detector Number Location Remarks U-1 & 2 R-1 Control Room U1-R-2 U2-R-2 Containment operating deck (140' elevation) near personnel access hatch.

Not designed to withstand post loss-of-coolant-accident containment temperature.

U1-R-4 U2-R-4 Charging pump room (73' elevation in Auxiliary Building).

U1-R-6 U2-R-6 NSSS Sampling room (100' elevation in Auxiliary Building).

U1-R-7 U2-R-7 Incore seal table area (103' elevation in containment).

Not designed to withstand post loss-of-coolant-accident containment temperature.

U-1 & 2 R-10 Auxiliary Building control board (85' elevation in Auxiliary Building).

U1-R-30 U1-R-31 U2-R-30 U2-R-31 Containment high range radiation (140' elevation in containment).

Designed to withstand post loss-of-coolant-accident (LOCA) conditions in containment.

U1-R-34 U2-R-34 85' Plant Vent RMS Room (ALARA)

U1-R-48 U2-R-48 HRSS (Sentry) Post Accident Sampling Room Non-vital power supply Local readout only U1-R-58 U2-R-58 U1-R-59 U2-R-59 Spent Fuel Pool Storage Area New Fuel Storage Area U-1 & 2 R-60 U-1 & 2 R-61 U-1 & 2 R-62 U-1 & 2 R-63 U-1 & 2 R-64 U-1 & 2 R-65 TSC Office Area TSC Operations Area TSC Computer Area TSC NRC Office Area TSC HVAC Equipment Area TSC Lab Area Local readout only Normal power is from non-vital supply, but can be aligned to vital buses from Switchgear room.

E-Plan Section 7 - Diablo Canyon Power Plant Emergency Plan Page 41 of 69 Emergency Facilities and Equipment E-Plan_Section_7u3r03.DOC 1209.1222 Rev 5.03 7.5.4 Process Radiological Monitoring System Several liquid and gaseous plant process streams are continuously monitored for radioactivity to provide an indication of equipment performance and provide a record of radioactivity releases to the environment. The important process monitors from the standpoint of potential usefulness in emergency situations are listed below.

Detector Process & Location Type Range (CPM)

Remarks 1-R-11 2-R-11 Containment air particulate (100' penetration area GE)

Gamma scintillati on 101 to 106 cpm Continuous sample drawn from containment, passed through moving filter, returned to containment.

Detector looks at filter.

Sample lines are automatically isolated by R-44A/B in event of major accident in containment.

1-R-12 2-R-12 Containment air gas (100' penetration area GE)

G-M 101 to 106 cpm Detector looks at sample flow downstream of particulate monitor.

Sample lines are automatically isolated by R-44 A/B in event of major accident in containment.

1-R-13 2-R-13 RHR exhaust duct air particulate (100' Aux. Building)

Gamma scintillati on 101 to 106 cpm Detector looks at air particulate sample on moving filter.

1-R-14/14 R

2-R-14/14 R

Plant Vent gas (85' area L)

Beta scintillati on 101 to 5 x 106 cpm read out in µCi/cc Detector looks at pressurized sample flow downstream of iodine and particulate monitors.

1-R-15/15 R

2-R-15/15 R

Condenser air ejector gas (104' Turbine Building)

Beta scintillati on 101 to 5 x 106 cpm Detector looks at air ejector off-gas.

1-R-17A, B

2-R-17A, B

Component Cooling Water (73' Aux. Building)

Gamma scintillati on 101 to 106 cpm Detector looks at sample off CCW discharge header. High alarm isolates CCW surge tank vent.

R-18 Liquid radioactive waste system effluent line to ocean (54' Aux. Building)

Gamma scintillati on 101 to 106 cpm Looks at waste stream prior to dilution in outfall.

High alarm closes waste discharge valve and diverts to EDR.

(continued on next page)

E-Plan Section 7 - Diablo Canyon Power Plant Emergency Plan Page 42 of 69 Emergency Facilities and Equipment E-Plan_Section_7u3r03.DOC 1209.1222 Rev 5.03 Detector Process & Location Type Range (CPM)

Remarks 1-R-19 2-R-19 Steam generator blowdown liquid (100' Aux. Building penetration area GE)

Gamma scintillation 101 to 106 cpm Detector looks at combined blowdown from 4 steam generators. Can be valved to look at each steam generator individually. High alarm will isolate Stm.

Gen blowdown tank inlet and overboard lines.

R-3 Oily water separator effluent (85' Turbine Building)

Gamma scintillation 101 to 106 cpm 1-R-22 2-R-22 Gas decay tank discharge gas (54' Aux. Building)

G-M 101 to 106 cpm Detector looks at gas decay tank discharge line and isolates it on high alarm.

1-R-23 2-R-23 Steam generator blowdown to discharge tunnel (100' Aux. Building penetration area GW)

Gamma scintillation 100 to 106 cpm Detector looks at liquid blowdown. 10-7 µCi/cc is the detectable level.

High alarm will isolate Stm. Gen blowdown tank inlet and overboard lines.

1-R-24/24R 2-R-24/24R Plant Vent iodine (85' area L)

Gamma scintillation 101 to 5 x 106 cpm (readout in µCi/cc)

Detector looks at plant vent I-131. Sensitivity based on I-131.

Continuous sample is drawn through fixed particulate prefilter and silver zeolite cartridge in series. Detector looks at silver zeolite cartridge.

1-R-25 2-R-25 1-R-26 2-R-26 Control room ventilation supply (160' Aux. Building)

Gamma scintillation 10-2 to 103 mR/hr Detector looks at Control Room ventilation intake to supply duct. High activity will transfer ventilation system to pressurization mode.

(MODE 4)

(continued on next page)

E-Plan Section 7 - Diablo Canyon Power Plant Emergency Plan Page 43 of 69 Emergency Facilities and Equipment E-Plan_Section_7u3r03.DOC 1209.1222 Rev 5.03 Detector Process & Location Type Range (CPM)

Remarks 1-R-28/28R 2-R-28/28R Plant Vent particulate (85' area L)

Beta scintillation 101 to 5 x 106 cpm (readout in µCi/cc)

Continuous sample drawn from plant vent is drawn through fixed filter and detector looks at filter 1-R-29 2-R-29 Plant Vent high range gross gamma (outside PV on 155' lvl)

Ion-chamber 10-1 to 107 mR/hr Detector monitors plant vent gross gamma by using a shielded detector with a wedge shaped "view window" aimed at the plant vent.

1-R-41 1-R-42 1-R-43 2-R-41 2-R-42 2-R-43 Gas decay tanks (64' Aux Building).

Ion-chamber 100 mR/hr to 104 mR/hr Readout is at the Aux.

Building Control Panel only. Well mounted with view ports directed at each tank.

R-51 R-52 R-53 R-54 Control room pressurization system inlet (140' Turbine Building)

G-M 10-2 to 104 cpm Detector measures gross activity in the intake line.

High alarm switches intake to opposite end of Turbine Building.

R-71 R-72 R-73 R-74 Steam lines downstream of containment penetration (130' pipe racks )

G-M 10 to 106 cpm Detector measures gross gamma activity in steam line, including Nitrogen-16.

1-R-44A &

44B 2-R-44A &

44B Containment Purge Exhaust (100' penetration area L)

Beta-scintillation 10 to 5 x 106 cpm Containment purge exhaust. High alarm causes CVI.

R-66 R-68 TSC HVAC Duct TSC Lab Beta scintillation 10 to 106 cpm Particulate Monitor R-67 R-69 TSC HVAC Duct TSC Lab Beta scintillation 10 to 106 cpm Noble Gas Monitor R-82 R-83 TSC HVAC Duct TSC Lab Gamma scintillation 10 to 106 cpm Iodine Monitor 1-R-87 2-R-87 Plant Vent extended range gas (85' area L)

Beta scintillation 10-3 to 105

µCi/cc Extended Range Plant Vent Noble Gas Monitor 1-RF-87A

& 87B 2-RF-87A

& 87B Plant Vent Sample (85' area L)

Sampler only N/A Iodine Grab Sample (High Range)

E-Plan Section 7 - Diablo Canyon Power Plant Emergency Plan Page 44 of 69 Emergency Facilities and Equipment E-Plan_Section_7u3r03.DOC 1209.1222 Rev 5.03 7.5.5 Radiological Counting Room The plant has extensive counting room equipment that is used for routine radiochemical determinations. This equipment could also be used during emergencies.

7.5.5.1 Location and Availability The counting room is located on the +85' elevation of the Auxiliary Building. Although this area would be expected to be available during most emergency conditions, it should be noted that operation of residual heat exchanger 1-1 in the post LOCA recirculation mode (assuming a Regulatory Guide 1.4 source term in the reactor coolant system) produces a gamma background in the facility, which would make it unusable. The TSC also has the capability to accomplish radiochemical analyses.

7.5.5.2 Counting Room Equipment

1) Multi-channel gamma analysis capability The counting room has a gamma spectroscopy system that utilizes high purity germanium detectors with high-resolution quality. The data is analyzed (peak search, peak fit, peak identification, peak quantification, etc.) by a host computer.

Analysis data from the counting room can be transmitted to the on-site Technical Support Center.

2) Liquid Scintillation Spectroscopy The counting room employs liquid scintillation spectroscopy. This analyzer is microprocessor controlled. The analyzer is primarily used for tritium (hydrogen - 3) analysis.

3) Proportional Counting Systems The counting room has a gas flow proportional counting system that is used for alpha and beta measurements.

7.5.6 Analytical Facilities Associated with On-Site Technical Support Center One compartment adjacent to the Technical Support Center is set aside for analytical work.

The principal purpose of this facility is to provide necessary on-site analytical capability in the event that the normal facilities in and around access control are unavailable. A germanium gamma spectroscopy system similar to those in the counting room is provided for isotopic analysis.

E-Plan Section 7 - Diablo Canyon Power Plant Emergency Plan Page 45 of 69 Emergency Facilities and Equipment E-Plan_Section_7u3r03.DOC 1209.1222 Rev 5.03 7.5.6.1 Emergency Assessment and Response System (EARS)/Meteorological Information Display Assessment System (MIDAS)

EARS receives and transfers input data from a variety of off-site and on-site monitors to a central computer for performing dispersion dose calculations using MIDAS. MIDAS includes a region specific meteorology input atmospheric dispersion model which accounts for nonlinear plume transport due to meteorology differences created by sea breeze, hill and valley influences. MIDAS provides plume projection maps and other assessment related information to centers both on-site and off-site. Overall system design seeks to optimize the diagnostic ability of operators and emergency response groups, maximizing the ability of system operators to understand events as they unfold.

EARS is interfaced to selected channels of the on-site meteorological towers, the off-site supplemental, region-specific meteorology towers, and plant radiation monitoring system.

MIDAS calculates doses for off-site locations based on data received from EARS. These computed plume displays, along with input data, source terms, and meteorological parameters, are transmitted via data links to UDAC.

Each EARS/MIDAS workstation has the capability to graphically display plume projection maps and data, and to provide hard copy to the user. Displays at the TSC, EOF, and Alternate Facility are capable of accessing files generated at any other EARS/MIDAS workstation for the purpose of response planning and coordination between the facilities.

Displayed information may be selected from several forms of calculated data and map presentations. Mapping capabilities are provided to superimpose plume boundaries, dose rates, airborne concentrations, population centers, and evacuation routes. Color graphics and printouts are used to increase the information content and readability of information.

7.5.6.2 System Description EARS/MIDAS consists of three functional subsystems:

1) Input Data Subsystem The data acquisition subsystem provides live-time radiological and meteorological data needed by the central computer as input parameters for the dose projection models.

The specific input data systems are described below.

2) Central Computer Subsystem The servers, PCs, peripherals, and software needed to manage input and output communications, and to maintain live-time and historical databases. The central computer subsystem is the main data storage and distribution point for EARS/MIDAS. It is located in the Technical Support Center (TSC).

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3) EARS/MIDAS Workstations These are the dedicated PC workstations; with color graphics display monitors, color printers, and the EARS/MIDAS software for execution of the dose projection model, and transmission of results to the central computer and other EARS/MIDAS workstations.

EARS/MIDAS workstations are distributed at the following locations:

Control Room (DCPP)

TSC (DCPP)

EOF (San Luis Obispo)

Alternate Facility (San Luis Obispo)

All EARS/MIDAS workstations are control enabled stations, capable of performing dose projections. Data transmission and software execution rates provide for updating the graphics display at intervals of not more than fifteen minutes.

4) Input Data Systems a) Off-Site Radiation Monitors The off-site monitoring system consists of a "ring" of low-level gamma dose-rate monitors installed at selected locations at distances of 6-17 miles from the Diablo Canyon Power Plant site. These fixed locations have been chosen with a dual purpose of providing measurement stations at population centers, and of including the largest practical number of land-based sectors from the site.

b) Meteorological Towers Meteorological data are provided from the primary on-site meteorological tower, and a secondary (backup) meteorological tower located on-site equipped with similar instrumentation at two levels, the meteorological data from either on-site tower, and the 7 off-site supplemental towers is accessible from any DCPP network PC.

EARS automatically receives and transmits to MIDAS the necessary data from the primary tower, with auto-failover to backup tower data for any missing parameters.

EARS also automatically receives and transmits to MIDAS the necessary data from the off-site supplemental, region-specific meteorology towers with auto-failover to the next most appropriate region meteorology tower data if any region meteorology tower input is indicated as bad data. Manual entry of current data from the primary, backup and supplemental meteorological towers is possible in the event of some problem with automatic input or data reduction.

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On-Site Radiation Monitors and Plant Process Instruments Parameters from fixed radiation monitoring and process instruments are available to any network PC. EARS automatically receives and transmits to MIDAS the radiation monitor and flow element readings necessary for performing dose projections.

No. of Monitors Monitor Channel Monitor Function 2

R-02 Containment Area Monitor 2

R-11 Containment Air Particulate Monitor 2

R-12 Containment Noble Gas Monitor 2

R-14 Plant Vent Noble Gas Monitor 2

R-14R Plant Vent Noble Gas Monitor, redundant 2

R-15 Condenser Air Ejector Gas Monitor 2

R-15R Condenser Air Ejector Gas Monitor, redundant 2

R-22 Gas Decay Tank Discharge Monitor 2

R-24 Plant Vent Iodine Monitor 2

R-24R Plant Vent Iodine Monitor, redundant 2

R-28 Plant Vent Air Particulate Monitor 2

R-28R Plant Vent Air Particulate Monitor, redundant 2

R-29 Plant Vent Gross Gamma Monitor 2

R-30 Containment High Range Area Monitor 2

R-31 Containment High Range Area Monitor 2

R-87 Extended Range Plant Vent Noble Gas Monitor 2

FM-12 Plant Vent Flow Rate 2

FM-700 Containment Purge Flow Rate 2

FIT-81 Condenser Air Ejector Flow Rate 2

R-44A Containment Purge Exhaust and CVI 2

R-44B Containment Purge Exhaust and CVI, redundant 2

RE-71 Main Steam Line Monitor 2

RE-72 Main Steam Line Monitor 2

RE-73 Main Steam Line Monitor 2

RE-74 Main Steam Line Monitor

E-Plan Section 7 - Diablo Canyon Power Plant Emergency Plan Page 48 of 69 Emergency Facilities and Equipment E-Plan_Section_7u3r03.DOC 1209.1222 Rev 5.03 7.5.7 Portable Survey and Dose Rate Instruments A variety of portable survey instruments (count rate and dose rate) are available at the plant for routine as well as emergency radiological monitoring. The general equipment types are summarized below. It should be noted that this list is intended only to be illustrative of the plant's capabilities. Precise quantities and models of specific equipment may vary from time to time as conditions change; new products appear on the market, etc. Portable survey instruments are normally located at Access Control when not in use.

Typical Portable Count and Dose Rate Meters Used Instrument (Model No. or equivalent)

Detector Type Radiation Measured Range Primary Use Beta-Gamma count rate meter, with the following detectors:

0-600 CPM 0-6000 CPM 0-60,000 CPM General contamination surveys Hand probe (HP-260)

GM Beta, Gamma Shielded hand probe, (HP-210)

GM Beta, Gamma Count rate meter (RM-15) for use with GM probes listed above, and:

0-500 CPM 0-5,000 CPM 0-50,000 CPM 0-500,000 CPM Personnel contamination surveys alpha scintillation probe (AC-3B-7)

ZnS (Ag2), 59 cm sensitive area Alpha gamma scintillation probe (SPA-3)

NaI (T1) 2" x 2" Gamma Count rate meter (PRM-6) for use with GM probes listed above AC-3B-7 and SPA-3 probes See above See above 0-500 CPM 0-5,000 CPM 0-50,000 CMP 0-500,000 CPM General contamination surveys Beta-Gamma dose rate meter (HP 270 shielded hand probe)

GM Beta, Gamma 0.1 -10,000 mR/hr 0-3000 mR/hr (HP-270 probe)

General environmental radiation surveys Portable REM Counter (PNR-4)

BF3

Neutron, thermal to 10 MeV 0-5 mR/hr 0-50 mR/hr 0-500 mR/hr 0-5000 mR/hr Neutron dose rate Teletector 6112 OR Equivalent (Johnson Extender, Telescan)

Twin G-M tubes 30 mg/cm beta window Beta, Gamma 0-2 mR/hr, 0-50 mR/hr 0-2 R/hr 0-50 R/hr 0-1000 R/hr Beta, gamma dose rate

E-Plan Section 7 - Diablo Canyon Power Plant Emergency Plan Page 49 of 69 Emergency Facilities and Equipment E-Plan_Section_7u3r03.DOC 1209.1222 Rev 5.03 Instrument (Model No. or equivalent)

Detector Type Radiation Measured Range Primary Use RO-2 or equivalent Ion chamber 3.5 mg/cm beta window air fill gas Beta, Gamma 0-5 mR/hr 0-50 mR/hr 0-500 mR/hr 0-5 R/hr Dose rate RO-2A or equivalent Ion chamber 3.5 mg/cm beta window air fill gas Beta, Gamma 0-50 mR/hr 0-500 mR/hr 0-5 R/hr, 0-50 R/hr Dose rate

E-Plan Section 7 - Diablo Canyon Power Plant Emergency Plan Page 50 of 69 Emergency Facilities and Equipment E-Plan_Section_7u3r03.DOC 1209.1222 Rev 5.03 7.5.8 Field Monitoring and Evacuation Kits

1) Field Monitoring Kits Field Monitoring Kits are stored on-site at Warehouse B (bldg. 113) and off-site at the EOF. Miscellaneous equipment is stored at a location near the EOF. The purpose of Field Monitoring Kits is to provide Field Monitoring Teams (FMTs) with the portable supplies in convenient locations for quickly dispatching teams to the field. These kits contain equipment and supplies that allow assessment of ambient exposure rate, airborne, particulate concentration, airborne radioiodine concentration, and ground deposition.

Radiological Emergency Kits Contents 12VDC Air Sampler, sample head Allen Key for Environmental TLD Holders Constant Geometry Holder Decon Center Key Extra Sample Head Corporate 909 Key Air Sample Particulate Filters Fuses for Air Sampler AgZ and/or TEDA Impregnated Cartridges Electronic Personal Dosimeters (0-1000R)

Paper Envelopes for Particulate Filters Count Rate Instrument Small Ziploc Bags Dose Rate Instrument Forceps Pancake GM probe HP-210/260 (or equivalent)

Smears Extra Batteries for instruments Timepiece Instruction Binder containing procedures, forms and maps Marking Pens Protective Clothing Tape Calculator Flashlight KI Tablets Plastic Bags The following miscellaneous equipment is located with the on-site kits.

2-way radios, cell phones, and satellite telephones Bolt Cutters The following miscellaneous equipment is located with the off-site kits.

Trowel Radiation Signs w/Inserts Grass Shears Radiation Barrier Tape Liter Bottles Air Sample Particulate Filters Coveralls AgZ and/or TEDA Impregnated Cartridges Skin Decon. Soap Paper Envelopes for Particulate Filters Scrub Brush Small Ziploc Bags Flashlight Surgical Gloves Paper Towels Smears Plastic Bags Extra Batteries Tape 2-way radios, cell phones, and satellite phones

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2) Evacuation Kits Evacuation Kits are available for the purpose of providing Evacuation Teams with the necessary portable supplies for performing contamination surveys of evacuated site personnel and their vehicles. The Evacuation Kits are stored at Warehouse B (bldg.

113).

If the Site Emergency Coordinator recommends evacuating non-essential personnel on-site, the Evacuation Kits will be obtained by the Evacuation Coordinator and their monitoring staff prior to the evacuation.

Evacuation Kits Contents Barricade Tape Decon Center Key Batteries Dose rate instrument Instruction Binder containing procedures, forms and maps Electronic Personal Dosimeters (0-1000R)

Bullhorn Flashlight Calculator GM Probe, HP-210/260 Corporate 909 Key Pens Count rate instrument Plastic Bags Protective Clothing Smears

3) Hospital Kit Hospital kits containing portable instrumentation, protective clothing and rad protection supplies are stored at French Hospital in San Luis Obispo and Marian Medical Center in Santa Maria.

Hospital Kit Contents Barricade Tape Markers Batteries Electronic Personal Dosimeters (0-1000R)

Count Rate Instrument Rad Sign - 6 pocket Disposable Coveralls Rad trash tags Dose rate instrument Radiation and Contamination Survey Sheet (Form 69-20786)

Yellow/Magenta Tape, 2" width Shoe Covers Duct Tape Smears GM probe, HP 210/260 (or equivalent)

Ziploc bags Latex Gloves

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4) Clothing Clean overalls and shoe covers are stored with the evacuation kits on-site, at the PG&E Energy Education Center, and at the TSC for use in the event emergency worker evacuee clothing is contaminated.

7.5.9 Fire Detection and Trouble Alarm System The Fire Detection and Trouble Alarm System uses heat detectors, flame detectors, and smoke detectors to provide the Control Room with an early warning of the existence and location of a fire or potential fire and in certain instances, initiates fire suppression systems.

In addition to the smoke and flame detection system, a vital equipment room temperature monitoring system provides indication of abnormally high compartment temperatures which may result from fire, ventilation system malfunction, or other equipment malfunctions.

Individual components are equipped with the usual complement of trouble alarms, some of which (e.g., high temperature bearing alarm) can provide the operators with early warning of fire or potential fires.

7.5.10 Sampling and Analysis Capability

1) Reactor Coolant Sampling If emergency conditions require sampling of reactor coolant, sampling may be performed by sampling of the reactor coolant system and containment sump sampling systems. In addition to the normal plant laboratory facilities, the TSC has instrumentation for radiological analysis of the samples.

2) Containment Atmosphere Sampling If emergency conditions require sampling of the containment atmosphere, the CASP containment atmospheric sampling system may be used. Equipment is provided to determine containment hydrogen. Dilute samples can be collected and prepared for counting. Radiological analyses are performed in either the normal plant laboratory facility or the TSC laboratory.

7.5.11 Miscellaneous Post Accident Assessment Instruments

1) Containment Interior Radiation Monitoring These detectors are part of the area and process monitoring systems and include two high range gamma radiation-monitoring instruments that have been provided to monitor post-accident radiation levels inside of the containment. They utilize ion chamber detectors and have a range of 1.0 to 107 R/hr. The units read out and alarm in the Control Room. These units are supplied from emergency AC, are seismic design Class I, and are qualified for post-accident containment conditions.

The radiation level inside the containment can also be estimated from outside the containment using hand held instruments.

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2) Containment Water Level Two wide range and one narrow range containment water level recorders can be used to indicate water level from the bottom of the reactor cavity (elevation 64 feet) to elevation 98 feet. The volume of water these recorders will represent is greater than 600,000 gallons. The indicators are located in the Control Room.

3) RCS Subcooling Monitor RCS subcooling instrumentation is provided to determine margins to saturation pressure and temperature using reactor coolant system pressure and temperature instruments and incore thermocouples. A calculating microprocessor module powered from a vital bus is provided. A digital readout is provided on the main control board. The margin, in either degrees Fahrenheit or pounds per square inch, is displayed on a continuous basis. Low and low-low main annunciator inputs are provided.

4) RCS Pressure Indication Reactor coolant pressure transmitters on loop 4 and loop 3 of the RCS are provided.

One transmitter has an indicator in the Control Room with a range of 0 to 3,000 psig.

The other transmitter has a recorder with a range of 0 to 3,000 psig and an indicator with a range of 0 to 600 psig.

5) RCS Temperature Indication RCS temperature is monitored with both narrow and wide range instruments. Each RCS loop has one wide range hot leg RTD and one wide range cold leg RTD. The wide range RTDs are in the main loops and have a temperature range of 0-700F. The narrow range RTDs are in thermowells that protrude into the legs and have a temperature range of 530-630F. The RTDs have Control Room readouts.

Also originally installed is a redundant, two train incore thermocouple system with readout on SPDS monitors in the Control Room, TSC and EOF. The number of operable thermocouples required per core quadrant is governed by the requirements given in the Technical Specifications. The incore thermocouple system is designed to Class IE electrical requirements and uses microprocessor equipment to calculate and readout on the Post Accident Monitoring System (PAMS) monitors. Readout is also available on the plant computer and SPDS monitors.

6) Containment Pressure Indication Seven containment pressure indications are available in the Control Room (each uses its own transmitter):

a) During normal operation a single recorder with a range of -1 to +1.5 psig is utilized.

b) Four indicators are available with a range of -5 to +55 psig.

c)

To indicate higher containment pressure two recorders with a range of -5 to 200 psig are available.

d) The instruments described in 2) and 3) are powered from vital electrical power supplies.

E-Plan Section 7 - Diablo Canyon Power Plant Emergency Plan Page 54 of 69 Emergency Facilities and Equipment E-Plan_Section_7u3r03.DOC 1209.1222 Rev 5.03 7.6 OFF-SITE MONITORING EQUIPMENT 7.6.1 Off-Site Geophysical Monitors Off-site seismic observation and monitoring facilities in the coastal region are located at the University of California (Berkeley), California Polytechnic University (San Luis Obispo),

California Institute of Technology (Pasadena), California Department of Water Resources (Sacramento), the U.S. Geological Survey (Menlo Park), and PG&E Geosciences Department (San Francisco).

7.6.2 Off-Site Meteorological Data Data from off-site supplemental meteorological sites surrounding Diablo Canyon are available at the Emergency Operations Facility (EOF) and through the EARS central processing computer. The sites include seven surface meteorological sites located at Pt.

Buchon, Los Osos, Foothill Blvd., Davis Peak, Energy Education Center, Grover Beach, and PG&E Service Center. Additional meteorological information that may be obtained on the PG&E Wide Area Network are: other PG&E power plants, off-site National Weather Service (NWS) data including upper air soundings at Vandenberg AFB, Oakland, San Diego, Las Vegas, Winnemucca and Medford, Oregon, and surface sites located in Monterey, Salinas, Paso Robles, Santa Maria, Santa Barbara, San Luis Obispo and Buoys EB11 and EB23.

There are also additional surface meteorological sites available from central and southern California as well as the latest infrared and visual satellite images available at the EOF.

Weather forecasts during Emergency Plan activation are available from the EOF, PG&E forecast office, NWS Los Angeles and Monterey.

7.6.3 Environmental Direct Radiation Monitors and Air Sampling Devices The Company has approximately thirty-five (35) direct radiation monitoring stations in the vicinity of the plant which are part of its ongoing environmental monitoring program. Each station is equipped with a thermoluminescent dosimeter. Fifteen (15) of these stations are located on-site and twenty (20) are located off-site.

Twenty (20) of the stations are located in order to provide an inner ring of stations in the general area of the site boundary and an outer ring in the 4-5 mile range from the site with a station in each land sector of each ring. Since the site is on the coast surrounded by a hilly, generally inaccessible area, some areas of the site boundary and in the range of 4-5 miles are inaccessible. However, a monitoring station has been placed to the closest accessible location to the stated criteria. Some of the above monitoring locations are also equipped with an air sampler fitted with a particulate filter and iodine cartridge.

E-Plan Section 7 - Diablo Canyon Power Plant Emergency Plan Page 55 of 69 Emergency Facilities and Equipment E-Plan_Section_7u3r03.DOC 1209.1222 Rev 5.03 Maps of monitoring locations are shown below. Radiation monitoring stations located in Santa Barbara County in the cities of Orcutt, Lompoc, and Solvang are not shown on the map.

7.6.3.1 Emergency Off-Site Monitoring Locations ToMomrty SE

E-Plan Section 7 - Diablo Canyon Power Plant Emergency Plan Page 56 of 69 Emergency Facilities and Equipment E-Plan_Section_7u3r03.DOC 1209.1222 Rev 5.03 7.6.3.2 Off-Site Environmental Monitoring Stations NW 0

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E-Plan Section 7 - Diablo Canyon Power Plant Emergency Plan Page 57 of 69 Emergency Facilities and Equipment E-Plan_Section_7u3r03.DOC 1209.1222 Rev 5.03 7.6.3.3 On-Site Monitoring Stations WNW w

WSW SW Additional Field Monitoring Locations located on north access road (not to scale) s SSE 0

E-Plan Section 7 - Diablo Canyon Power Plant Emergency Plan Page 58 of 69 Emergency Facilities and Equipment E-Plan_Section_7u3r03.DOC 1209.1222 Rev 5.03 7.6.4 Off-Site Radiation Monitoring System The real-time radiation dose-rate monitoring system consists of thirteen low-level gamma radiation dose-rate monitors; ten are installed at the various population centers in the vicinity of Diablo Canyon Power Plant, and three located on the power plant site as shown and listed below.

INW Pressurized Ion Chiarr iber (PIC)

E-Plan Section 7 - Diablo Canyon Power Plant Emergency Plan Page 59 of 69 Emergency Facilities and Equipment E-Plan_Section_7u3r03.DOC 1209.1222 Rev 5.03 PIC #

Description 1

DCPP North Gate Guard Post 2

DCPP SSW Corner of Target Range (near on-site field monitoring location, SE, B) 3 Morro Bay Switchyard 4

Montana de Oro State Park. At the Park Ranger's residence, adjacent to the siren 5

South Bay Fire Department 6

Outside rear entrance to EOF (south side of building) (NE, 17) 7 SLO Police Department. Intersection of Santa Rosa Street and Walnut Street Behind fence SW of Walnut Street driveway.

8 SLO Service Center, 4325 So. Higuera St., SLO (OEL Garage).

9 PG&E Energy Education Center (E,15).

10 DCPP Front Gate 11 Pismo Beach at the PG&E Pismo Warehouse on Price Canyon Road, about 0.5 miles NE of the Price Street intersection. PIC is located in the upper parking lot.

12 SLO County Building, Grover Beach. Exit Hwy 101 at 4th street. Take 4th to Longbranch and proceed NE on Longbranch. County Social Services Building is on corner of 16th and Longbranch.

13 DCPP ENE near the Old Steam Generator Storage Facility and Fleet Garage These monitors employ a pressurized ion chamber (PIC) detector for accurate measurement of low-level gamma radiation ranging from background readings up to 10R/hr.

Real-time PIC data can be read locally on a graphic display. In addition, PICs are polled by the EARS data acquisition subsystem in the TSC and 1-minute averaged data is made available on the display computers in the emergency response facilities.

The purpose of the PIC system is to provide continuous measurement and reporting to PG&E, local and state agencies of gamma radiation dose rates in the environment around Diablo Canyon Power Plant so that informed decisions to protect the public can be made.

The technical description of the real-time radiation dose-rate monitoring includes:

1) Detector Type and Operating Range a) Type: PIC Environmental Radiation Monitoring Station b) Range: 0 micro R/hr to 10 R/hr NOTE: Other detector specifications such as accuracy, sensitivity and operating temperature range can be found in the applicable detector vendor technical manual.

2) Data Transmitted to EOF The data is taken from the real-time monitors by the EARS central computer at the TSC and this data is available on display computers in the TSC and EOF. The Radiation Monitor Data Display Terminal (RMDDT) application on these computers is able to display map locations with all PIC station readings.

Monitor data will be stored in a database on the EARS central computer. Instantaneous readings are available within the previous 2 hours2.314815e-5 days 5.555556e-4 hours 3.306878e-6 weeks 7.61e-7 months and one-hour averages are available on an annual basis.

E-Plan Section 7 - Diablo Canyon Power Plant Emergency Plan Page 60 of 69 Emergency Facilities and Equipment E-Plan_Section_7u3r03.DOC 1209.1222 Rev 5.03 Each monitor has a unique location number which is coded to prepared maps of different scales indicating exact locations of all monitoring stations. Each map can be displayed on the station's CRT's with monitor numbers overlaid at their respective locations and monitor data on one side of the map. The displayed map can also be transformed to hard copy on printer.

3) Detector Locations The real-time radiation monitors locations were selected on the basis of three criteria.

The first is the need to obtain radiation levels in the population centers surrounding Diablo Canyon. The data received from the real-time monitors would not only provide routine background gamma radiation dose rate data but also gamma radiation dose rate in the event of a significant airborne release from Diablo Canyon to augment radiation data obtained by field monitoring teams. The second is the need to distribute the monitors over as many of the land based compass sectors as possible. The final criterion relates to the prevailing wind direction, wind speed and the topography in the area of the Diablo Canyon Power Plant.

7.6.5 Off-Site Laboratories Either of the following two off-site radiological laboratories may be used in the event of an emergency.

1) PG&E's Off-Site Emergency Laboratory (OEL) at the PG&E Service Center in San Luis Obispo a) Location:

(1) PG&E San Luis Obispo Service Center, 4325 Higuera Street, San Luis Obispo, California.

b) Capabilities:

(1) Gamma Spectrum Analysis: 35 samples per 24-hour day; samples may be in the form of filters, cartridges, liquids and solids.

c)

Equipment:

(1) Intrinsic germanium and/or sodium iodide detectors with associated electronics and desk top computer.

(2) Radio communications link with the Technical Support Center for voice transmission or analyses results.

(3) Portable health physics instrumentation.

d) Response Time:

(1) During normal hours - two hours following notification.

(2) During off-normal hours - two hours following notification.

E-Plan Section 7 - Diablo Canyon Power Plant Emergency Plan Page 61 of 69 Emergency Facilities and Equipment E-Plan_Section_7u3r03.DOC 1209.1222 Rev 5.03

2) Commercial Radiological Laboratory a) Location:

(1) Charleston, SC.

b) Capabilities:

(1) Gamma Spectrum Analysis - 50 samples per 24-hour day; samples may be in the form of food, milk, water, air filters and iodine cartridges.

(2) Gross Alpha/Beta Analysis: 50 samples per 24-hour day; samples may be in the form of air filters and water.

c)

Equipment:

(1) Intrinsic germanium detector with associated electronics and computer system.

(2) Liquid scintillation detectors.

(3) Gas proportional detector.

d) Response Time:

(1) During normal hours - staff existing at facility.

(2) During off-normal hours - two hours following notification.

7.6.6 Off-Site Emergency Laboratory (OEL)

Off-site field sample analysis equipment is stored at the PG&E Service Center in San Luis Obispo. The OEL analytical equipment is equipped with a gamma spectroscopy analysis and detection system, portable health physics survey equipment; communications equipment; and independent power supplies.

7.7 MISCELLANEOUS PROTECTIVE FACILITIES AND EQUIPMENT 7.7.1 Installed Smoke, Flame & Heat Detectors Smoke, flame and heat detectors, which are located throughout the plant, are designed to give early warning of possible fire conditions. These detectors are annunciated on alarm panels in the Control Room.

When an alarm is received in the Control Room, a plant operator will be sent to investigate the cause of the alarm. If a fire condition exists, it should be reported by calling telephone extension 779. Fire suppression system alarms (i.e., sprinkler, deluge, CO2 or Halon) also annunciate in the Control Room. These alarms could indicate a potential fire condition and shall be investigated in the same manner as any fire detection alarm.

E-Plan Section 7 - Diablo Canyon Power Plant Emergency Plan Page 62 of 69 Emergency Facilities and Equipment E-Plan_Section_7u3r03.DOC 1209.1222 Rev 5.03 7.7.2 Fire Detection by Personnel Reporting of fires takes precedence over fighting a fire. Only personnel trained in firefighting equipment use should attempt to suppress a fire. The fire alarm signal system is the normal way to report a fire. The fire signal is initiated by dialing from any telephone on the plant site.

The call goes to a Control Room Operator who receives information from the caller on a conference line. The fire alarm is sounded by a 30-second monotone sound. The alarm is followed by a public address system message with details about the fire.

The fire signal is a 30-second blast on the fire sirens.

When a fire alarm is sounded, the typical response is to perform the following duties immediately: The Fire Brigade can be made up of IFOs (i.e., Fire Captains and Fire Fighters) and Operations personnel. The Fire Brigade Leader can be a Fire Captain or a licensed operator that is Fire Brigade Leader qualified. A qualified nuclear operator or licensed operator will accompany the Fire Brigade Leader unless the Fire Brigade Leader is the qualified nuclear operator or Licensed Operator. (See FSAR 9.5H.) The Industrial Fire Officers (IFOs) are professional fire fighters and makeup the rest of the Shift Fire Brigade for Fire, Rescue and Hazardous Material Emergencies. The Fire Captain is trained as a Fire Brigade Leader and has the primary role to support the Fire Brigade as an "Operations Officer" in the Incident Command System (ICS). The IFOs will be part of the 5 man Fire Brigade required by the FSAR.

The designated Shift Brigade Members will don protective equipment, pick up radios, proceed to the fire and maintain communication with the Control Room while fighting the fire.

The Security Department will upon notification of a fire, send a security officer to report to the Fire Brigade Leader.

Security will assist with access and the staging of off-site fire response personnel including providing dosimetry and escorts as necessary. Security will also assist the fire brigade with security barriers and ensure that plant security is not compromised during the emergency response.

The SM/SEC will notify CAL FIRE, San Luis Obispo County Fire (CDF/SLO). If the telephone lines are unavailable, the CDF/SLO radio will be used.

Notification shall be made for any of the following conditions:

All structure fires or any fire that presents a threat to personnel or plant systems.

Report of smoke within a structure with no known source for the smoke.

Any wild land fire.

Any non-fire emergency that would require a CAL FIRE / County Fire rescue or hazardous materials response.

Any time the Fire Brigade Leader or SM/SEC recommends additional assistance.

Diablo Canyon control room staff will cancel or modify the original request by contacting the CAL FIRE Emergency Command Center using their 24-hour emergency phone line.

E-Plan Section 7 - Diablo Canyon Power Plant Emergency Plan Page 63 of 69 Emergency Facilities and Equipment E-Plan_Section_7u3r03.DOC 1209.1222 Rev 5.03 7.7.3 Plant Fire Detection and Suppression and Respiratory Protection Plant fire detection and suppression systems and respiratory protection equipment are described in the FSAR.

7.7.4 Halon 1301 Systems Halon 1301 Systems are present in but not exclusive to the following:

1) Learning Center Building - There are Halon 1301 cylinders of various sizes set up to protect six different areas within the building. The areas are activated through either a manual pull-station or smoke detectors (photo-electric and ionization) that are cross zoned for automatic release. Full detector activation on the simulator area will open main power breakers for the simulator and the computer, close ventilation dampers and will delay a Halon release for 30 seconds after an alarm. Two different alarms will sound prior to discharge. The first is a ringing bell that is caused from an activated detector. The second alarm is a flashing strobe light and a horn that has been activated from a second detector. The second alarm will bring a discharge of Halon within 30 seconds.

2) The Administration Building - Halon system protects microfiches and sixth floor PC Network rooms and the 1st floor Telecommunication room. The discharging of halon is caused by detector activation in the same way as the Learning Services Building.

3) The I&C/Tele Com/Medical Building - The Halon system protects the second floor telecommunication room. Halon discharge is caused by detector activation in the same way as the Training Building.

4) Document Storage Building (Building 603) - Halon discharge is caused by detector activation.

E-Plan Section 7 - Diablo Canyon Power Plant Emergency Plan Page 64 of 69 Emergency Facilities and Equipment E-Plan_Section_7u3r03.DOC 1209.1222 Rev 5.03 7.7.5 Mobile Fire Fighting Equipment Mobile fire suppression equipment is provided to support a fire brigade response to areas outside of the main plant structures including construction areas and surrounding wildland.

This equipment meets or exceeds what is required by NFPA 600 to include fire engine pumper with water tank, hoses, foam, etc.

7.7.6 Respiratory Protection Equipment Respiratory protection equipment as described in the FSAR (Table 12.3-3) is available for emergencies involving fires and airborne radioactive materials.

7.7.7 Self-Contained Breathing ApparatusT03689 Pressure demand Self-Contained Breathing Apparatus units (SCBA) are available at the site. Locations and numbers are as follows:

Location SCBA Extra 30-Minute Tanks TSC 10 0

Control Room 10 0

Fire Brigade (various locations) 18 16 Access Control 20 20 Storage (various locations) 50*

64*

Total 108 100

NOTE: Up to one-half of this number may be removed for servicing.

At a minimum, there are at least two locations on-site where SCBA bottles can be refilled.

The capability to refill bottles inside and outside of the RCA is available. A portable air compressor capable of refilling exhausted breathing air bottles is also available.

7.7.8 Constant Flow Air Line Respirators The plant employs oil-free air compressors. As a result, the plant service air system can be used to supply breathing air. Approximately 20 MSA "clearvue" full facemasks outfitted as constant flow airline respirators are available. Duo-flow regulators allow the respirators to be used with HEPA filtration or as a constant flow system.

The regulators of these facemasks require a supply pressure of 35 to 40 psig. Since plant air supplies are at a higher pressure than this, pressure regulator boxes are used between the supply and the facemask. These boxes have manifolds where up to four separate air hoses can be plugged into the pressure regulated air. Approximately 10 of these regulator boxes are available at the site. Low pressure alarms are available to let the monitor know when pressure drops below the setpoint.

E-Plan Section 7 - Diablo Canyon Power Plant Emergency Plan Page 65 of 69 Emergency Facilities and Equipment E-Plan_Section_7u3r03.DOC 1209.1222 Rev 5.03 7.7.9 Radiological Protective Clothing The plant is stocked with a considerable supply of protective clothing for normal personnel use when working in radiologically controlled areas of the plant. Typically, sufficient clothing is available for about 500 people.

7.7.10 Containment Hydrogen Recombiners The electric hydrogen recombiner system consists of two completely independent subsystems. Each subsystem is capable of providing the required hydrogen removal capacity.

Each subsystem consists of a recombiner unit, which is located in the plant containment building at elevation 140', and a control panel and power supply. The latter two components are located outside the containment in the Auxiliary Building which is an accessible structure following a loss-of-coolant accident (LOCA). Connections external to the containment for removal of hydrogen gas from inside containment by portable recombiner units are provided on the post-accident hydrogen purge system containment penetrations.

Each recombiner unit is a constant volume device with a flow of 100 cfm. It has a minimum hydrogen removal rate equivalent to a removal efficiency of 98 percent with a process gas hydrogen concentration of 4 percent.

The recombiner unit consists of an inlet preheater, a heater-recombination, and an exhaust chamber. The unit is completely enclosed and the internals are protected from impingement by containment spray. The inlet and outlet ports are louvered to minimize moisture entering the unit.

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E-Plan Section 7 - Diablo Canyon Power Plant Emergency Plan Page 66 of 69 Emergency Facilities and Equipment E-Plan_Section_7u3r03.DOC 1209.1222 Rev 5.03 7.7.11 Permanent Lighting Systems The plant is provided with independent lighting systems:

1) Normal AC Lighting Normal lighting is operated at 208/120 volts supplied from the 480-volt system. The DC emergency lighting is supplied at 125 volts from two of the station batteries and is limited to a period of approximately two hours. This lighting is located principally in control and electrical equipment rooms, stairways, exits and entrances, corridors, and passageways.

2) Emergency AC Lighting The AC emergency lighting is supplied from two vital 480-volt buses. It is located throughout the plant to provide minimum lighting. The AC emergency lighting is routed in separate conduits from the normal AC lighting.

3) Emergency DC Lighting The DC lights are also in separate conduits in vital operating areas of the auxiliary building.

After the diesel generators start and the single phase AC emergency transformers receive power, the DC emergency lights are automatically relayed off. An overlapping time delay keeps the DC lights operating while the AC emergency lights return to service.

Lighting panels and circuits breakers were tested by the supplier to satisfy seismic requirements. Lighting panel wall attachments have been calculated to be adequate for seismic loads. Conduit supports have adequate seismic supports. The standard fixtures for DC lights are direct mounted to building surfaces, and are therefore subject to building seismic forces. The fixtures will not experience appreciable amplification of seismic forces.

7.7.12 Portable Lighting Numerous battery-powered lanterns and flashlights are maintained at various locations for normal and emergency use. Additional units are maintained as stock items in the warehouse.

E-Plan Section 7 - Diablo Canyon Power Plant Emergency Plan Page 67 of 69 Emergency Facilities and Equipment E-Plan_Section_7u3r03.DOC 1209.1222 Rev 5.03 7.7.13 Transportation 7.7.13.1 Plant Vehicles There are several types of vehicles at the plant site, which can be used to provide emergency transportation. These include:

1) Two-wheel drive vehicles There is a variety of two-wheel drive vehicles, including pickup trucks, at the plant site for general use and may be made available for use during an emergency.

2) Four-Wheel Drive Vehicles Four-wheel drive vehicles are provided for use at the plant site. These vehicles may be used by the radiological monitoring teams to obtain field measurements in rugged terrain.

7.7.13.2 Ambulance Prior arrangements exist with local ambulance services in San Luis Obispo for on-site service. The agreements include transportation of contaminated victims if required.

7.7.13.3 Off-Site Company Vehicles The Company has a fleet of automobiles and trucks in its San Luis Obispo service area which can be mobilized in an emergency if required.

7.7.13.4 Air Transportation The Company has air transportation capability available for emergency use.

The Company also has access to a variety of charter aircraft and helicopter companies for emergency use, including transportation of contaminated victims using an enclosed type litter.

7.7.13.5 Other Modes of Transportation The Company owns and maintains two marine crafts at the Diablo Canyon Power Plant.

These vessels may be available for personnel transport in the event road access is unavailable.

E-Plan Section 7 - Diablo Canyon Power Plant Emergency Plan Page 68 of 69 Emergency Facilities and Equipment E-Plan_Section_7u3r03.DOC 1209.1222 Rev 5.03 7.7.14 Alternative Facilities Alternative facilities are established to function as a staging area for augmentation of emergency response staff. The facilities are accessible even if the site is under threat of or experiencing hostile action. The facilities have the capability for communication with the Emergency Operations Facility, Control Room, and plant security; the capability to perform offsite notifications; and the capability for engineering assessment activities, including damage control team planning and preparation, for use when onsite emergency facilities cannot be safely accessed during hostile action.

The alternative facilities are located a safe distance from DCPP. This distance supports rapid response to the plant when accessibility is restored.

7.8 FIRST AID AND MEDICAL FACILITIES The facilities for medical attention and personnel decontamination are located in the Building 102 Medical Facility immediately to the west side of the Unit 1 Turbine Building.

Access to the Radiological Controls Areas (RCA) of the plant can be accomplished on foot or with the site emergency vehicle. Off-site ambulances can also readily access the Medical Facility or the RCA. Decontamination effluent generated at the Medical Facility is contained for proper disposal.

The DCPP Medical Facility provides routine occupational medical care as well as emergency care for sick or injured personnel. During normal business hours, a physician's assistant is in charge.

Emergency medical service is available 24 hours2.777778e-4 days 0.00667 hours 3.968254e-5 weeks 9.132e-6 months a day, seven days a week by registered nurses or trained EMTs.

7.8.1 Personnel Decontamination Facilities A decontamination room is provided at Access Control on elevation +85' of the Auxiliary Building, which has a sink and shower that drain to the liquid radwaste laundry collection tanks. Various decontamination aids are provided, such as brushes, skin decontamination soaps, rubber gloves, creams, wiping tissues, towels, etc. Monitoring instrumentation is readily available from the access control instrument storage.

7.8.2 First Aid Kits and Stretchers Standard Company first aid kits and basket stretchers are placed at various locations throughout the plant.

7.8.3 Whole Body Counters The plant maintains at least two computer-based whole body counters. Models may include a vertical counter with a NaI detector or an IGE bed counter, which if circumstances require, can be configured as a NaI bed counter.

E-Plan Section 7 - Diablo Canyon Power Plant Emergency Plan Page 69 of 69 Emergency Facilities and Equipment E-Plan_Section_7u3r03.DOC 1209.1222 Rev 5.03 7.9 CROSS REFERENCE TO NUREG-0654 NUREG-0654 DCPP Emergency Plan NUREG-0654 DCPP Emergency Plan C.1.a to c N/A H.6.b 7.6.3, 7.6.4, 7.6.52)d)(2)

C.3 7.5.5, 7.6.52)d)(2)

H.6.c 7.5.5, 7.5.8, 7.6.5, 7.6.6 C.4 N/A H.7 7.5.6.1, 7.5.8, 7.6.3, 7.6.4 E.6 7.4 H.8 7.5.2 F.1.a 7.2.4, 7.2.5, 7.2.7, 7.2.11 H.9 7.1.5 F.1.b 7.2.4, 7.2.5, 7.2.6, 7.2.7, 7.2.10, 7.2.11, 7.2.12 H.10 N/A F.1.c 7.2.4, 7.2.5, 7.2.7, 7.2.9 H.11 7.5.7, 7.5.8, 7.6.52)d)(2),

7.7.3, 7.7.5, 7.7.9, 7.8.1, 7.8.2 F.1.d 7.2.1, 7.2.2, 7.2.4, 7.2.5, 7.2.6, 7.2.7, 7.2.10, 7.2.11 H.12 7.1.4, 7.1.6, 7.6.52)d)(2)

F.1.e 7.2, 7.3.1 I.2 7.5.2, 7.5.3, 7.5.4, 7.5.7, 7.5.10 F.1.f 7.2.7, 7.2.9 I.3.b 7.5.3, 7.5.4, 7.5.6, 7.5.6.1 F.2 7.2.1, 7.2.11 I.4 7.5.6.1 F.3 N/A I.5 7.5.2, 7.5.6.1 G.3.b 7.1.6.1 I.7 7.5.8, 7.6.3, 7.6.4 H.1 7.1.4, 7.1.5 I.9 7.5.8, 7.6.3 H.2 7.1.6 I.10 7.5.6.1, 7.6.6 H.5 7.5 J.10.a 7.5.6.1, 7.6.3, 7.6.4 H.5.a 7.5 J.10.c 7.4 H.5.b 7.5.3, 7.5.4, 7.5.5, 7.5.6, 7.5.6.1, 7.5.8, 7.5.10 K.5.a and b 7.5.8, 7.8.1 H.5.c 7.5.4, 7.5.10, 7.5.11 K.7 7.1.7, 7.8.1 H.5.d 7.5.9 L.2 7.8.2 H.6.a 7.6.1, 7.6.2 L.4 7.7.13

DCL-21-012, Spent Fuel Storage Installation, Emergency Plan Update

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Dear Commissioners and Staff:

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DCL-21-012, Spent Fuel Storage Installation, Emergency Plan Update

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Dear Commissioners and Staff:

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