ML17037B664
| ML17037B664 | |
| Person / Time | |
|---|---|
| Site: | Nine Mile Point  |
| Issue date: | 12/01/1976 |
| From: | Schneider R Niagara Mohawk Power Corp |
| To: | Lear G Office of Nuclear Reactor Regulation |
| References | |
| Download: ML17037B664 (6) | |
Text
NRC FoRM 195 U S NUCLEAR REGULATORY COI iSION I,.6)..
A AAIRC DISTRIBUTION Fon PART 50 DOCKET MATERIAL DOCKET NUMBER 50>>220 FILE NUMBER TO:
Mr. George Lear FROM:
Niagara Mohawk Power Corp.
- Syracuse, New York R. R. Schneider DATE OF DOCUMENT 12/1/76 DATE RECEIVED 12876
@LETTER QOR I G INAI OCOPV DESCRIPTION QNOTORI2ED IRfUNCLASSIF I E D PROP INPUT FORM ENCI.OSURE NUMBER OF COPIES RECEIVED One signed Ltr. w/attached....re their ll/3/76 ltr....
concerning "Plant Unique Analysis Report for Torus~Support System and Attached Piping for Nine Mile Point Nuclear Station.
ACED@ EDGED (2-P)
PLANT NAME:
Nine Hile Point Unit No.
1 SAFETY ASSXGNED AD!
H&iX L~CASST Lear Nowicki Parrish FOR ACTION/INFORMATION PROJECT MANAGER LIC ASST 129 6
RJL INTERNALDISTR I BUTION NRC PDR X&E OELD GOSSICK & STAFF MIPC CASE HANAUER
~
HARLESS PROJECT MANAGEMENT BOYD PE COLLINS HOUSTON PETERSON MELTZ HELTEMES SKOVHOLT LPDR ~ Oswe o
N. Y.
TIC!
NSIC!
hSLB!
SYSTEMS SAFETY HEINEMAN SCHROEDER ENGINEERING HACARRY KNIGHT SIHWEIL PA ICK REACTOR SAFE ROSS NOVAK ROSZTOCZY C11ECK AT & I SALTZMAN RUTBERG EXTERNAL DISTRIBUTION NAT LAS REG V IE LA PDR CONSULTANTS:
PLANT SYSTEMS TEDES 0 0 A IPPOL TO OPERATING REACTORS STELLO OPERATING TECH EISENHUT BUTLE
.S B 0 ULR KSON OR STESA E
0 ERNST BALLARD SPANGLER SXTE TECH GAMHILL STEPP HULMAN SITE ANALYSIS VOLLMER BUNCH J ~ COLLINS KREGER CONTROL NUMBER
/AgD~
ACRS CYS ~e&9%86/
E T NRC FORM 196 (2.76)
QZGGH>'~~',V(i".fN)5:
.".V.'OMTF. "'<<".K('jgg
C NIAGAR MOHAWK POWER CORPORATION ee
'0 S'0$
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/
NIAGARA~
MOHAWK 300 ERIE 80UI.EVARO WEST SYRACUSE, N.Y. I3202 December 1, 1976 Gp Director of Nuclear Reactor Regulation Attn:
Mr. George Lear, Chief Operating Reactors Branch ¹3 U. S. Nuclear Regulatory Commission Washington, D. C.
20555 Re:
Nine Mile Point Unit 1 Docket No. 50-220 DPR-63
Dear Mr. Lear:
My letter of November 3, 1976 transmi tted additional information regarding the "Plant Unique Analysis Report for Torus Support System and Attached Piping for Nine Mile Point Nuclear Station."
The heading for Question 3, Table C, should be corrected to read as follows:
"...BP = 1.5 psi..."
Attached is'a revised Table C.
Very truly yours, NIAGARA MOHAWK POWER CORPORATION R. R.
SCHNEIDER Vice President-Electric Production MGM/sz Attachment
L
TABLE C SUtltlARY OF MALYSIS RESULTS BASE CASE LOAD hP =~l~n')
t<AXIHUtl DOWN LOADS For 4'-6" Submer ence Component Evaluation 4J cU CR 0 c( O
~ a 5
CL Cl E/l '~
Load/Stress Strength Ratio Ca 1 cul.a ted Al 1 ow,.
Capacity Act.
Ring Girder Stress, psi tteoIbrane
+ Bending
'hear Torus Shel.l Stress, psi tlembrane
+ Bending Shear X
X 34,800 9,170 21,700
, 15,600 81,600 40,800 64,000 40,800
,43
.23
.33
.38
,50
.50
.50
.50 Column-Torus Meld Joint, Inner Column Web Weld (kips)
Flange Meld (in.-kips)
Outer Column
'lfeb Meld (kips)
Flange Meld'(in.-kips)
Column Buckling Inner Column Fquation 19
. Equation 20 Outer Column X
H/A 65;5 158.7 N/A H/A z,NI:8 700. 0
.87 H/A
.40 t(/A
~
t(/A 678.0
.75 2,213.0
.05 7OO.O,
- 10 1.0
~ 1.0 1.0 1.0 1.0 1.0 0.5 N/A Equatidn 19 Equation 20 X
/A H/A i'(/A H/A t(/A
.38 N/A 0.5 N/A Column Base Joint Inner Column Down Load (k1ps)
Up Load (kips)
Outer Column Down Load (kips)
Up Load '(kips) 508.2 124.7*
595,1 111-3*
1602.0
.31 461 45
.27 1602.0
-.37
.461.45
.24
.50
.50
.50
.50
- Conservatively computed by multiplying values in original Plant Unique Ana1ys i s Tab I e 9 by
- Hap, 01d
4 0
~ ~
aK.~