ND-23-0207, ITAAC Closure Notification on Completion of ITAAC 3.3.00.07d.ii.c (Index Number 802)

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ITAAC Closure Notification on Completion of ITAAC 3.3.00.07d.ii.c (Index Number 802)
ML23075A082
Person / Time
Site: Vogtle Southern Nuclear icon.png
Issue date: 03/16/2023
From: Coleman J
Southern Nuclear Operating Co
To:
Office of Nuclear Reactor Regulation, Document Control Desk
References
ND-23-0207
Download: ML23075A082 (1)
v • d • e


Text

Jamie M. Coleman 7825 River Road Re gulatory Affairs Director Waynesboro, GA 30830

,~ Southern Nuclear V o gtle 3 &4 706-848-6926 tel

March 16, 2023

Docket No.: 52 - 026 ND-23-0207 10 CFR 52.99(c)(1)

U.S. Nuclear Regulatory Commission Document Control Desk Washington, DC 20555-0001

Southern Nuclear Operating Company Vogtle Electric Generating Plant Unit 4 ITAAC Closure Notification on Completion of ITAAC 3.3.00.0?d.ii.c (Index Number 802]

Ladies and Gentlemen :

In accordance with 10 CFR 52.99(c)(1 ), the purpose of this letter is to notify the Nuclear Regulatory Commiss ion (NRC) of the completion of Vogtle Electric Generating Plant (VEGP)

Unit 4 Inspections, Tests, Analyses, and Acceptance Criteria {ITAAC) Item 3.3.00.0?d.ii.c (Index Number 802]. This IT AAC verified that the specified attributes for Class 1 E divisional cables and raceway in the radiologically controlled area of the auxiliary building have been met. The closure process for this IT AAC is based on the guidance described in NEl-08-01, " Industry Guideline for the IT AAC Closure Process under 10 CFR Part 52 ", which is endorsed by the NRC in Regulatory Guide 1.215.

This letter contains no new NRC regulatory commitments. Southern Nuclear Operating Company (SNC) requests NRC staff confirmation of this determination and publication of the required notice in the Federal Register per 10 CFR 52.99.

If there are any questions, please contact Kelli Roberts at 706-848-6991.

Respectfully submitted,

rt: a~

Regulatory Affairs Director Vogtle 3 & 4

Enclosure : Vogtle Electric Generating Plant (VEGP) Unit 4 Completion of ITAAC 3.3.00.0?d.ii.c (Index Number 802]

JMC/CSS/sfr U.S. Nuclear Regulatory Commission ND-23-0207 Page 2 of 2

cc: Regional Administrator, Region II Director, Office of Nuclear Reactor Regulation (NRR)

Director, Vogtle Project Office NRR Senior Resident Inspector - Vogtle 3 & 4 U.S. Nuclear Regulatory Comm ission ND-23-0207 Enclosure Page 1 of 6

Southern Nuclear Operating Company ND-23-0207 Enclosure

Vogtle Electric Generating Plant (VEGP) Unit 4 Completion of ITAAC 3.3.00.07d.ii.c [Index Number 802]

U.S. Nuclear Regulatory Commission ND-23-0207 Enclosure Page 2 of 6

IT AAC Statement

Design Commitment:

7.d) Physical separation is maintained between Class 1 E divisions and between Class 1 E divisions and non-Class 1 E cables.

7.a) Class 1 E electrical cables, communication cables associated with only one division, and raceways that route the Class 1 E electrical cables and the communication cables are identified according to applicable color-coded Class 1 E divisions.

7.b) Class 1 E divisional electrical cables and communication cables associated with only one division are routed in their respective divisional raceways.

Inspections, Tests, Analyses:

Inspections of the as-built raceways that route Class 1 E cables will be performed to confirm that the separation between raceways that route Class 1 E cables of different divisions, and between raceways that route Class 1 E cables and raceways that route non-Class 1 E cables is consistent with the following:

ii.c) Within other plant areas (limited hazard areas), the minimum separation is defined by one of the following:

1) The minimum vertical separation is 5 feet and the minimum horizontal separation is 3 feet.
2) The minimum vertical separation is 12 inches and the minimum horizontal separation is 6 inches for raceways containing only instrumentation and control and low-voltage power cables~ 2/0 AWG. This minimum vertical separation is 3 inches for the configuration with a conduit above and crossing the open tray at an angle equal to or greater than 45 degrees.
3) The minimum vertical separation is 12 inches and the minimum horizontal separation is 6 inches between a conduit and an open configuration for low-voltage power cables greater than 2/0 AWG but not greater than 750 kcmil. The vertical separation is 3 inches if a conduit is above and crossing an open tray at an angle equal to or greater than 45 degrees.
4) For configurations that involve exclusively limited energy content cables (instrumentation and control), the minimum vertical separation is 1 inch and the minimum horizontal separation is 1 inch.
5) For configurations involving an enclosed raceway and an open raceway with low-voltage power cables, the minimum vertical separation is 1 inch if the enclosed raceway is below the open raceway.
6) For configuration involving enclosed raceways, the minimum separation is 1 inch in both horizontal and vertical directions.

U.S. Nuclear Regulatory Commission ND-23-0207 Enclosure Page 3 of 6

7) The minimum vertical separation is 1 inch and the minimum horizontal separation is 1 inch for configurations with a non-safety conduit and a free air safety cable with low-voltage power cables and below.

iii) Where minimum separation distances are not maintained, the circuits are run in enclosed raceways or barriers are provided.

iv) Separation distances less than those specified above and not run in enclosed raceways or provided with barriers are based on analysis.

v) Non-Class 1 E wiring that is not separated from Class 1 E or associated wiring by the minimum separat ion distance or by a barrier or analyzed is considered as associated circuits and subject to Class 1 E requirements.

Inspections of the as-built Class 1 E cables and the as-built raceways that route the Class 1 E cables will be conducted.

Inspections of the as-built Class 1 E divisional cables and the as-bu ilt raceways that route the Class 1 E cables will be conducted.

Acceptance Criteria:

Results of the inspection will confirm that the separation between raceways that route Class 1 E cables of different divisions, and between raceways that route Class 1 E cables and raceways that route non-Class 1 E cables is consistent with the following:

ii.c) Within other plant areas inside the radiologically controlled area of the auxiliary building (limited hazard areas), the separation meets one of the following:

1) The vertical separation is 5 feet or more and the horizontal separation is 3 feet or more.
2) The minimum vertical separation is 12 inches and the minimum horizontal separation is 6 inches for raceways containing only instrumentation and control and low-voltage power cables::;; 2/0 AWG. This minimum vertical separation may be reduced to 3 inches for the configuration with a condu it above and crossing the open tray at an angle equal to or greater than 45 degrees.
3) The minimum vertical separation is 12 inches and the m inimum horizontal separation is 6 inches between a conduit and an open configuration for low-voltage power cables greater than 2/0 AWG but not greater than 750 kcmil. The vertical separation may be reduced to 3 inches if a conduit is above and crossing an open tray at an angle equal to or greater than 45 degrees.
4) For configurations that involve exclusively limited energy content cables (instrumentation and control), the minimum vertical separation is 1 inch and the minimum horizontal separation is 1 inch.
5) For configurations that involve an enclosed raceway and an open raceway with low voltage power cables, the minimum vertical separation is 1 inch if the enclosed raceway is below the open raceway.

U.S. Nuclear Regulatory Comm ission ND-23-0207 Enclosure Page 4 of 6

6) For configurations that involve enclosed raceways, the minimum vertical and horizontal separation is 1 inch
7) The minimum vertical separation is 1 inch and the minimum horizontal separation is 1 inch for configurations with a non-safety conduit and a free air safety cable with low-voltage power cables and below.

iii.c) Where minimum separation distances are not met inside the radiologically controlled area of the auxiliary building, the circu its are run in enclosed raceways or barriers are provided.

iv.c) For areas inside the radiologically controlled area of the auxiliary building, a report exists and concludes that separation distances less than those specified above and not provided with enclosed raceways or barriers have been analyzed.

v.c) For areas inside the radiologically controlled area of the auxiliary building, non-Class 1 E wiring that is not separated from Class 1 E or associated wiring by the minimum separation distance or by a barrier or analyzed is treated as Class 1 E wiring.

c) Class 1 E electrical cables, and communication cables associated with only one division, and the raceways that route these cables in the radiologically controlled area of the auxiliary building are identified by the appropriate color code.

c) Class 1 E electrical cables and communication cables in the radiologically controlled area of the auxiliary building associated with only one division are routed in raceways assigned to the same division. There are no other safety division electrical cables in a raceway assigned to a different division.

ITAAC Determination Basis

Multiple IT AAC are performed to ensure that:

  • Physical separation is maintained between Class 1 E divisions and between Class 1 E divisions and non-Class 1 E cables,
  • Class 1 E electrical cables, communication cables associated with only one division, and raceways that route the Class 1 E electrical cables and the communication cables are identified according to applicable color-coded Class 1 E divisions, and
  • Class 1 E divisional electrical cab les and communication cables associated with only one division are routed in their respective divisional raceways.

This IT AAC requires inspections of the Class 1 E cables and as-built raceways that route Class 1 E cables inside the radiologically controlled area of the auxiliary building to confirm that:

  • Physical separation between raceways that route Class 1 E cables of different divisions and between raceways that route Class 1 E cables and raceways that route non-Class 1 E cables meet the specified separation criteria,
  • Cables and raceways associated with only one division are identified by the appropriate color code, and U.S. Nuclear Regulatory Commission ND-23-0207 Enclosure Page 5 of 6
  • Divisional cables are routed in raceways assigned to the same division and that there are no other safety division electrical cables in a raceway assigned to a different division.

Class 1 E cables, raceways that route Class 1 E cables and non-Class 1 E cables, and barriers are all designed to meet the specified Acceptance Criteria in accordance with APP-GW-E1-001 (Reference 1 ). Class 1 E electrical cables, raceways that route Class 1 E cables and non-Class 1 E cables, and barriers were installed in accordance with design drawings, installation specifications issued for construction, and work package requirements. Completed raceway installation, in-progress and completed cable installation, completed cable terminations, and completed barriers were inspected to ensure the installation specifications are satisfied.

Inspections were performed in accordance with the Quality Verification Program 26139-000-4MP-T81C-N7101 (Reference 2). The completed inspection records document:

  • The satisfactory separation between raceways that route Class 1 E cables of different divisions, and between raceways that route Class 1 E cables and raceways that route non Class 1 E cables,
  • The satisfactory color coding of the Class 1 E electrical cables, communication cables associated with only one division, and raceways, and
  • The satisfactory routing of the Class 1 E electrical cables and communication cables associated with only one division in raceways assigned to the same division and that there are no other safety division electrical cables in a raceway assigned to a different division.

The ITAAC Electrical Report (Reference 3) identifies the inspections performed and confirms the following:

  • The separation between raceways that route Class 1 E cables of different divisions, and between raceways that route Class 1 E cables and raceways that route non-Class 1 E cables is consistent with the following:

o Within other plant areas inside the radiologically controlled area of the auxiliary building (limited hazard areas), the separation meets one of acceptance criteria ii.c.1 through ii.c.7.

o Where minimum separation distances are not met inside the radiologically controlled area of the auxiliary building, the circuits are run in enclosed raceways or barriers are provided.

o For areas inside the radiologically controlled area of the auxiliary building, a report exists and concludes that separation distances less than those specified above and not provided with enclosed raceways or barriers have been analyzed.

Analyses performed in accordance with standard IEEE 384-1981 are documented in References 4 & 5 which demonstrate acceptability of lesser separation distances.

These reports specifically conclude the following instances of lesser separation distances do not impact the ability of Class 1 E circuits to perform their safety related functions: Fiber Optic Linear Heat Detection Cables, Service Level Z Instrumentation Cable, and allowances based on service level, configuration, and fault vs. target circuit classification (Class 1 E vs. non-Class 1 E).

U.S. Nuclear Regulatory Commission ND-23-0207 Enclosure Page 6 of 6

o For areas inside the radiologically controlled area of the auxiliary building, non-Class 1 E wiring that is not separated from Class 1 E or associated wiring by the minimum separation distance or by a barrier or analyzed is treated as Class 1 E wiring.

  • As documented in Reference 3, there are no associated circuits in the radiologically controlled area of the auxiliary building.
  • Class 1 E electrical cables, and communication cables associated with only one division, and the raceways that route these cables in the radiologically controlled area of the auxiliary building are identified by the appropriate color code.
  • Class 1 E electrical cables and communication cables in the radiologically controlled area of the auxiliary building associated with only one division are routed in raceways assigned to the same division. There are no other safety division electrical cables in a raceway assigned to a different division.

References 3 through 5 are available for NRC inspection as part of the Unit 4 IT AAC 3.3.00.0?d.ii.c Completion Package (Reference 6).

ITAAC Finding Review

In accordance with plant procedures for ITAAC completion, Southern Nuclear Operating Company (SNC) performed a review of all findings pertaining to the subject IT AAC and associated corrective actions. This review found there are no relevant IT AAC findings associated with this IT AAC. The IT AAC completion review is documented in the IT AAC Completion Package for ITAAC 3.3.00.0?d.ii.c (Reference 3) and is available for NRC review.

IT AAC Completion Statement

Based on the above information, SNC hereby notifies the NRC that ITAAC 3.3.00.0?d.ii.c was performed for VEGP Unit 4 and that the prescribed acceptance criteria are met.

Systems, structures, and components verified as part of this ITAAC are being maintained in their as-designed, ITAAC compliant condition in accordance with approved plant programs and procedures.

References (available for NRC inspection)

1. APP-GW-E1-001, Electrical Systems Design Criteria
2. 26139-000-4MP-T81C-N7101, Bechtel Construction Quality Verification Program
3. SV4-1200-ITR-800802, "Unit 4 Electrical Report for ITAAC 796 and ITAAC 802,

Radiologically Controlled Area of the Auxiliary Building"

4. APP-GW-E0R-006, "IEEE 384 Design Compliance Description"
5. APP-FSAR-GEF-234, "Update IEEE 384-1981 Exceptions for Revised Cable and Raceway Minimum Separation Distances (NL-1491)"
6. 3.3.00.07d.ii.c-U4-CP-Rev0, ITAAC Completion Package
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