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| | number = ML17340B025 | | | number = ML17340B025 |
| | issue date = 12/06/2017 | | | issue date = 12/06/2017 |
| | title = Grand Gulf, Unit 1 - Supplemental Letter to License Amendment Request to Incorporate Tornado Missile Risk Evaluator Into Licensing Basis | | | title = Supplemental Letter to License Amendment Request to Incorporate Tornado Missile Risk Evaluator Into Licensing Basis |
| | author name = Larson E A | | | author name = Larson E A |
| | author affiliation = Entergy Operations, Inc | | | author affiliation = Entergy Operations, Inc |
Revision as of 18:28, 27 January 2019
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Category:Letter
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/00077 December 6, 2017 U.S. Nuclear Regulatory Commission . ATTN: Document Control Desk 11555 Rockville Pike Rockville, MD 20852 Entergy Operations, Inc. P.O. Box 756 Port Gibson, MS 39150 Eric A. Larson Site Vice President Grand Gulf Nuclear Station Tel. (601) 437-7500
SUBJECT:
Supplemental Letter to License Amendment Request to Incorporate Tornado Missile Risk Evaluator into Licensing Basis Grand Gulf Nuclear Station, Unit 1
- Docket No. 50-416 License No. NPF-29
REFERENCE:
Grand Gulf Nuclear Station Letter GNR0-2017/0006.1, "License Amendment Request to Incorporate Tornado Missile Risk Evaluator into Licensing Basis". Ladies and Gentlemen:
The referenced letter submitted a license amendment request to incorporate the Tornado Missile Risk Evaluator methodology into the Grand Gulf licensing basis. This letter provides a supplemental change to the previously provided Updated Final Safety Analysis Report Markup, Table 3.5-8, page 5 of 6. Please replace the previously submitted page with the one provide in the attachment.
This letter contains no Regulatory Commitments.
Should you have any questions concerning the content of this letter, please contact Douglas Neve, Manager Regulatory Assurance at 601-437-2103.
Sincerely, CGL-Eric A. Larson Site Vice President EAL/amh Attachments:
- 1. Updated Final Safety Analysis Report Page Markup.
GNR0-2017/00077 Page 2 of 2 cc: with Attachment Mr. Siva Lingam U.S. Nuclear Regulatory Commission Mail Stop OWFN 8 81 Rockville, MD 20852-2738 cc: without Attachments and Enclosure Mr. Kriss Kennedy U.S. Nuclear Regulatory Comm_ission Regional Administrator, Region IV 1600 East Lamar Boulevard Arlington, TX 76011-4511 NRC Senior Resident Inspector Grand Gulf Nuclear Station Port Gibson, MS 39150 Dr. Mary Currier, M.D., M.P.H State Health Officer Mississippi Department of Health P.O. Box 1700 Jackson, MS 39215-1700 Email: mary.currier@msdh.ms.gov GNR0-2017/00077
\ Grand Gulf Nuclear Station, Unit No. 1 Docket No. 50-416 I License No. NPF-29 License Amendment Request to Incorporate Tornado Missile Risk Evaluator into Licensing Basis Attachment 1 Updated Final Safety Analysis Report Page Markup .J
- f. Elevator machine room exhaust air check damper with centerline El. 212'-4" 6. Diesel-generator Building a. Air exhaust louver with centerline at El. 163' -9" b. Air exhaust louvers with centerline at El. 162'-0" c. Air intake louvers with centerline at El. 159'-8" d. Diesel generator exhaust pipes above roof El. 172' -0" _e. Diesel generator fuel oil tank vent-top El. 173'-6" 7. Auxiliary Building a. RHR room blowout shafts above El. 185'-0" b. RHR pump room & RCIC room blowout shafts above El. 185' -0" c. Steam tunnel blowout shaft above El. 185' -0" d. Louver and door at El. 185'-0" e. Door at roof El. 185' -0" f. Main entrance door at El. 139' -0" g. Exit door at El. 139'-0" GGNS-UFSAR Figure 3.8-117) Exposed\ but shielded by the partially complete,d Unit 2 Containment shell located approximately 90 feet to the north (see_ Figure 3.8-117) Protected by adjacent Auxiliary Bldg. wall & generator bldg. with roof El. 172'-0" (see Figure 9.5-21) Protected by adjacent Auxiliary Bldg. wall & generator bldg. with roof El. 172'-0" (see Figure 9.5-21) Protected by a 2'-0" thick reinforced concrete barrier wall (see Figure 9.5-21) See subsection 9.5.8.3 Exposed but shielded from horizontal missiles by concrete parapet with top elevation of 17 4' -0" Protected by a 2' -0" thick reinforced concrete barrier structure (see Figure 3.8-81) Protected by a 2'-0" thick reinforced concrete barrier structure (see Figure 3.8-81) Protected by a 2'-0" thick reinforced concrete barrier structure (see Figure 3.8-81) Protected by a 2'-0" thick reinforced concrete barrier wall (see Figure 3.8-81) Protected by a 2'-0" thick reinforced concrete barrier wall (see Figure 3.8-81) Protected by a 2'-0" thick reinforced concrete barrier wall & 2'-0" thick top slab (see Figure 3.8-79) Protected by a 2'-0" thick reinforced concrete barrier wall & 2'-0" thick top slab (see Figure 3.8-79) 5