ML17037B623
| ML17037B623 | |
| Person / Time | |
|---|---|
| Site: | Nine Mile Point  |
| Issue date: | 06/16/1977 |
| From: | Rhode G Niagara Mohawk Power Corp |
| To: | Lear G Office of Nuclear Reactor Regulation |
| References | |
| Download: ML17037B623 (4) | |
Text
U.S. NUCLEAR REGULATORY Co ION NRC FORM 195 I2.76)
NRC DISTRIBUTION FQR PART 50 DOCKET MATERIAL DOCKET NUMBER FILE NUMBER TO:
ETTE R RIG INAL QCOPY DESCRIPTION 0 NOTORIZED ONC LASS IF I ED Mr. George Lear PROP INPUT FORM ENCLOSURE FROM:
Niagara Mohawk Power Corp.
- Syracuse, New York Gerald Ki Rhode DATE OF DOCUMENT 6/16/77 DATE RECEIVED 6/23/77 NUMBER OF COPIES RECEIVED L lt'G Consists of information regarding the in-service surveillance program for the torus catwalk and various torus support structure Components
~ ~ ~ ~ ~ ~ ~ ~
ACKNOW@,gD p~
gQQ PLANT NAME: Nine Mile Point Unit'o.
1
, RJL 6/23/77 (1-P)
FOR ACTION/INFORMATION ENVIRHNMENTAL E T MANAGER:
CENSING ASSISTANT:
ASSIGNED AD:
Vi MOORE LTR BRANCH CHIEF:
PROJECT MANAGER:
LICENSING ASSISTANT:
INTERNALD TFMS SAFETY HEINEMAN OEDER Bi HARLESS ISTRI BUTION PLANT SYSTEMS TEDESCO BENAROYA SITE SAFETY &
ENVIRON ANALYSIS DENTON & MULLER ENGINEERING IPPOLITO OPERATING REACTORS ENVIRO TECH ERNST BALLARD GBLO D
VA Z
.CZY CHECK A I A TZMAN TBERG EXTERNAL DISTRIBUTION BAER BUTLER RIME GAMMILL 2
SITS ANALYSIS VOLLMER BUNCH Ji COLLINS KREGER CONTROL NUMBER TIC REG IV J
HANCHETT
'6 CYS ACRS SENT CAT NRC FORM 195 (2-761 GO NSIC
',~II 77174Oi75
a S
NIAGARAMOHAWKPOWER CORPORATION
<ltd, NIAGARA ~
MOHAWK 300 ERIE BOULEVARD, WEST SYRACUSE, N. Y. I3202 June 16, 1977 Q)M~
Director of Nuclear Reactor Regulation Attn:
Mr. George, Lear, Chief Operating Reactors Branch g3 U.
S. Nuclear Regulatory Commission Washington, D.
C.
20555 Re:
Nine Mile Point Unit 1 Docket No. 50-220 DPR-63 Gentlemen:
Our letter of September 3,
1976 proposed an in-service surveillance program for the torus catwalk and various torus support structure components for Nine Mile Point Unit l.
This program is applicable fox the duration of the Mark I Containment Long Term Program.
Two changes are being made in this surveillance program.
First, the requirement to verify proper hold-down of the catwalk.
This has been deleted since the catwalk has been xemoved.
- Second, the Magnetic Particle Testing requirement on the support column to shell attachment welds is being reduced from 100 percent to 10 percent.
This reduction is justified based on the excellent correlation between the design and as-built conditions of the torus, as shown by inspections made by the Office of Inspection and Enforcement during October, 1976.
- However, should there be any indications of defective welds, surveillance will be increased.
Very txuly yours, NIAGARA MOHAWK POWER CORPORATION II C il Gexald K.
hode Vice Pxesident-Engineering MGM/szd 771740175
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