ML110040155
| ML110040155 | |
| Person / Time | |
|---|---|
| Site: | 05200021 |
| Issue date: | 12/28/2010 |
| From: | Ogata Y Mitsubishi Heavy Industries, Ltd |
| To: | Ciocco J Document Control Desk, Office of New Reactors |
| References | |
| UAP-HF-10352 | |
| Download: ML110040155 (10) | |
Text
At MITSUBISHI HEAVY INDUSTRIES, LTD.
16-5, KONAN 2-CHOME, MINATO-KU TOKYO, JAPAN December 28, 2010 Document Control Desk U.S. Nuclear Regulatory Commission Washington, DC 20555-0001 Attention: Mr. JefferyA. Ciocco Docket No.52-021 MHI Ref: UAP-HF-10352
Subject:
MHI's Responses to US-APWR DCD RAI No. 658-5130 Revision 2 (SRP 03.08.04)
Reference:
- 1) "Request for Additional Information No. 658-5130 Revision 2, SRP Section:
03.08.04 - Other Seismic Category I Structures," dated 11/15/2010.
With this letter, Mitsubishi Heavy Industries, Ltd. ("MHI") transmits to the U.S. Nuclear Regulatory Commission ("NRC") a document entitled "Responses to Request for Additional Information No. 658-5130, Revision 2."
Enclosed are the responses to 2 RAIs contained within Reference 1. This transmittal completes the response to this RAI.
Please contact Dr. C. Keith Paulson, Senior Technical Manager, Mitsubishi Nuclear Energy Systems, Inc. ifthe NRC has questions concerning any aspect of this submittal. His contact information is provided below.
Sincerely, Yoshiki Ogata, General Manager-APWR Promoting Department Mitsubishi Heavy Industries, LTD.
Enclosure:
- 1. Response to Request for Additional Information No. 658-5130, Revision 2 CC: J. A. Ciocco C. K. Paulson Contact Information C. Keith Paulson, Senior Technical Manager Mitsubishi Nuclear Energy Systems, Inc.
300 Oxford Drive, Suite 301 Monroeville, PA 15146 E-mail: ck-paulson@mnes-us.com Telephone: (412) 373-6466
Docket No.52-021 MHI Ref: UAP-HF-10352 Enclosure 1 UAP-HF-10352 Docket No.52-021 Response to Request for Additional Information No. 658-5130, Revision 2 December, 2010
RESPONSE TO REQUEST FOR ADDITIONAL INFORMATION 12/28/2010 US-APWR Design Certification Mitsubishi Heavy Industries Docket No.52-021 RAI NO.: NO. 658-5130 REVISION 2 SRP SECTION: 03.08.04 - Other Seismic Category I Structures APPLICATION SECTION: 3.8.4 DATE OF RAI ISSUE: 11/15/10 QUESTION NO. RAI 03.08.04-48:
In the response to question 03.08.04-40, MHI states that boundary elements are not used because the aspect ratio of the wall is less than 2 as permitted by ACI 349-06 Section 21.7.6.1.
The staff reviewed the ACI 349-06 Section 21.7.6.1 and concurs with the Applicant. However, MHI is requested to provide additional data to support their statement. Specifically, the Applicant is requested to provide a table that lists the aspect ratio, hw/Iw defined in ACI 349-06 Section 21.7.6.1, for all of the shear walls.
ANSWER:
The statement contained in this RAI question refers to the Power Source Building (PS/B) walls.
The attached Table (Attachment 1 to this RAI) shows the ratio of the hJ/Iw for all the walls and wall segments of the West PS/B. The wall designation in the second column of this Table is shown on the attached URS drawings PSB-13-11-008-003 through 005 (Attachment 2 to this RAI). The hw/Iw of all walls of West PS/B is less than 2 with a maximum hw/Iw ratio of 1.72. The wall aspect ratios hw/lI of the East PS/B are less than 2 and similar to the West PS/B which had a maximum hJIw ratio of 1.72.
Impact on DCD There is no impact on the DCD.
Impact on COLA There is no impact on the COLA.
Impact on PRA There is no impact on the PRA.
03.08.04-1
RESPONSE TO REQUEST FOR ADDITIONAL INFORMATION 12/28/2010 US-APWR Design Certification Mitsubishi Heavy Industries Docket No.52-021 RAI NO.: NO. 658-5130 REVISION 2 SRP SECTION: 03.08.04 - Other Seismic Category I Structures APPLICATION SECTION: 3.8.4 DATE OF RAI ISSUE: 11/15/10 QUESTION NO. RAI 03.08.04-49:
In the response to Part 2 of question 03.08.04-45, MHI states that "simple models can be considered / defined to be simple linear frame-type structures consisting of members that are physically similar to beams and columns." The staff disagrees with the Applicant. The staff believes that the "simple model" representing the structure of which the dynamic response is dominated by its fundamental mode of vibration. The Applicant is requested to provide any documentation that supports their position.
ANSWER:
The definition of "simple models" was provided in the responses to RAI 213-1951 Rev. 1, Question 03.08.04-15 and RAI 497-3743 Rev. 0, Question 03.08.04-45 Part 2 on the design/analysis of HVAC duct supports employing the equivalent static analysis method is from Subsection 6.3 of IEEE 344-1987. This definition was unchanged and maintained in Subsection 7.3 of IEEE 344-2004. Simple models are used to design and analyze commodities such as ducts, conduits, and cable trays and their associated supports that are described in DCD Subsections 3.8.4.1.4, 3.8.4.1.5, 3.8.4.1.6 and DCD Appendices 3A, 3F, and 3G. As stated in Subsection 6.3 or 7.3 of IEEE 344, the Static Coefficient Analysis method (or equivalent static analysis method) is an acceptable alternate method of analysis that allows a simpler technique in return for added conservatism and determination of natural frequencies is not required. MHI has reviewed the long history of this issue (definition of "simple models") and similar questions by the NRC Staff relating to employment of equivalent static analysis method on subsystem designs on the US-APWR and believes that the definition of "simple models" as provided above is correct and sufficient to resolve this issue.
Impact on DCD There is no impact on the DCD.
Impact on COLA There is no impact on the COLA.
Impact on PRA 03.08.04-2
There is no impact on the PRA.
03.08.04-3
Attachment 1 to RAI 658-5130 Wall Pier Height to Width Aspect Ratio of PSB Story Wall Pier ID Length (ft) Height (ft) HIL Ratio Height Reference BIFHO1 33.000 12.166 0.37 from B1F to BMIF B1FH02 33.000 12.166 0.37 from BIF to BMIF BIFH03 26.834 6.833 0.25 Opening (6'-10")
B1FH04 5.667 6.833 1.21 Opening (6'-10")
B1FH05 26.834 6.833 0.25 Opening (6'-10")
BIFH06 26.500 12.166 0.46 from BIFto BMIF B1FH07 23.500 6.833 0.29 from BIFto BMIF B1FH08 26.000 29.916 1.15 from BiFto IF BIFH09 27.500 29.916 1.09 from BIFto IF Basement BIFHIO 54.000 29.916 0.55 from BIFto IF BIFH11 54.000 29.916 0.55 from BIF to IF BIFV01 22.667 12.166 0.54 from BIF to BM1F BlFV02 88.166 29.916 0.34 from BIFto BMIF B1FV03 29.500 8.500 0.29 Opening (8'-6")
BIFV04 24.500 8.500 0.35 Opening (8'-a")
B1FV05 18.000 8.500 0.47 Opening (8'-6")
BIFV06 22.667 12.166 0.54 from BIF to BM1F BIFV07 27.833 12.166 0.44 from B1F to BMIF BIFV08 22.667 12.166 0.54 from BIF to BMIF BIFV09 10.333 12.166 1.18 from BIF to BMIF B1FV10 78.499 29.916 0.38 from BiF to IF BMIFH01 33.333 17.750 0.53 from BM1F to 1FL BMIFHO2 16.833 17.750 1.05 from BM1F to 1FL BMIFHO3 13.333 17.750 1.33 from BM1F to 1FL BMIFHO4 11.333 6.833 0.60 Opening (6'-10")
BMIFHO5 4.667 6.833 1.46 Opening (6'-10")
BM1FH06 6.833 8.500 1.24 Opening (8'-6")
BM1FH07 15.001 8.500 0.57 Opening (8'-6")
BMIFH08 5.166 8.500 1.65 Opening (8'-6")
BMIFHO9 4.666 6.833 1.46 Opening (6'-10")
BMIFH1O 17.167 8.500 0.50 Opening (8'-6")
BMIFH11 13.000 8.500 0.65 Opening (8'-6")
Basement BMlFH12 6.333 6.833 1.08 Opening (6*-10")
(B1MF) BMlFH13 26.000 17.750 0.68 from BMIFto IFL BMlFH14 19.000 17.750 0.93 from BM1F to 1FL BMlFH15 12.000 17.750 1.48 from BMiFto IFL BMlFV01 22.667 17.750 0.78 from BMIFto 1FL BMlFV02 20.333 17.750 0.87 from BM1F to IFL BM1FV03 22.667 17.750 0.78 from BM1F to 1FL BMlFV04 13.667 17.750 1.30 from BMIF to 1FL BMlFV05 13.667 17.750 1.30 from BMIF to 1FL BM1FV06 22.667 17.750 0.78 from BMlF to 1FL BMlFV07 13.667 17.750 1.30 from BM1F to 1FL BM1FV08 22.667 17.750 0.78 from BM1F to 1FL BMIFV09 10.333 17.750 1.72 from BMIF to 1FL 1FHO1 66.000 35.917 0.54 from 1FL to Roof 1FH02 13.500 6.833 0.51 Opening (6'-10")
1FH03 49.500 6.833 0.14 Opening (6'-10")
I FHO4 22.750 9.000 0.40 Opening (9'-0")
First IFH05 16.500 8.500 0.52 Opening (8'-6")
(IF) 1FVO1 22.667 35.917 1.58 from IFLto Roof 1FV02 78.499 35.917 0.46 from IFL to Roof IFV03 78.499 35.917 0.46 from IFLto Roof IFV04 22.667 35.917 1.58 from 1FL to Roof 1FV05 78.499 35.917 0.46 from 1FLto Roof
Attachment 1 to RAI 658-5130 Wall Pier Height to Width Aspect Ratio of PSB Story Wall Pier ID Length (ft) Height (ft) H/L Ratio Height Reference 1MFHOI 66.000 15.333 0.23 from 24'. to Roof EL 24-2' 1MFH02 66.000 15.333 0.23 from 24'-2" to Roof 1MFV01 25.333 15.333 0.61 from 24'-2 to Roof 1MFV02 25.333 15.333 0.61 from 24'-2 to Roof RHO1 23.083 11.583 0.50 from Roof to Penthouse Roof RH02 12.183 11.583 0.95 from Roof to Penthouse Roof RH03 23.083 11.583 0.50 from Roof to Penthouse Roof RH04 12.183 11.583 0.95 from Roof to Penthouse Roof RHO5 24.250 11.583 0.48 from Roof to Penthouse Roof RH06 24.250 11.583 0.48 from Roof to Penthouse Roof RH07 24.250 11.583 0.48 from Roof to Penthouse Roof RH08 24.250 11.583 0.48 from Roof to Penthouse Roof RHO9 25.041 11.583 0.46 from Roof to Penthouse Roof RH10 25.041 11.583 0.46 from Roof to Penthouse Roof RHll 17.083 11.583 0.68 from Roof to Penthouse Roof RH12 17.583 11.583 0.66 from Roof to Penthouse Roof RH13 25.041 11.583 0.46 from Roof to Penthouse Roof Roof RH14 17.083 11.583 0.68 from Roof to Penthouse Roof RVOI 35.584 11.583 0.33 from Roof to Penthouse Roof RV02 13.583 11.583 0.85 from Roof to Penthouse Roof RV03 25.333 11.583 0.46 from Roof to Penthouse Roof RV04 25.333 11.583 0.46 from Roof to Penthouse Roof RV05 25.333 11.583 0.46 from Roof to Penthouse Roof RV06 35.584 11.583 0.33 from Roof to Penthouse Roof RV07 13.583 11.583 0.85 from Roof to Penthouse Roof RV08 25.333 11.583 0.46 from Roof to Penthouse Roof RV09 35.584 11.583 0.33 from Roof to Penthouse Roof RV10 13.583 11.583 0.85 from Roof to Penthouse Roof RV11 35.584 11.583 0.33 from Roof to Penthouse Roof RV12 13.583 11.583 0.85 from Roof to Penthouse Roof RV13 25.333 11.583 0.46 from Roof to Penthouse Roof Max HIL Ratio = 1.72 Wall pier width is based on construction joint (from center line to center line) and opening.
Wall pier height is based on the dimension from the top of lower floor slab to the top of upper floor slab.
The opening height is the wall pier height for piers next to openings.