ML17298B386
| ML17298B386 | |
| Person / Time | |
|---|---|
| Site: | Palo Verde  |
| Issue date: | 10/10/1984 |
| From: | Knighton G Office of Nuclear Reactor Regulation |
| To: | Van Brunt E ARIZONA PUBLIC SERVICE CO. (FORMERLY ARIZONA NUCLEAR |
| References | |
| NUDOCS 8410240158 | |
| Download: ML17298B386 (6) | |
Text
Docket Nos.:
50-528, 50-529 and 50-530 0
OCT ~ o 584 Mr. E.
E.
Van Brunt, Jr.
Vice President - Nuclear Projects Arizona Public Service Company Post Office Box 21666
- Phoenix, Arizona 85036
Dear Mr. Van Brunt:
SUBJECT:
RE(UEST FOR ADDITIONAL INFORMATION - PALO VERDE CEA SHROUD ASSEMBLY By letter dated August 15, 1984, you provided a response to our June 6,
1984 request for information concerning the fabrication of the Palo Verde CEA shroud assembly.
Our review of the information provided indicates that the full penetration butt joint- (with integral backing) at the original retained top plate to tube welds at the tie rod locations was made in accordance with Combustion Engineer-
- ing, C.
E. Avery Division, Detailed Welding Procedure DWP No. II-35-8.8-1, Rev. 0., dated 6/25/79.
This procedure cities as a supporting
- PgR, SMA-8.8-1G-1 which applies shielded metal arc welding of tack, root and fill
- passes, with manual gas tungsten arc welding as an option via P(Rs GTA-8.8-2G-3 and GTA-8.8-2G-4.
However, the information provided does not indicate which welding process was actually used.
The process should be identified since the design of the joint precludes back gouging of the root pass.
Experience has shown that, where back gouging cannot be achieved, the use of shielded metal arc welding for the root pass could result in constituents of the filler metal coating being entrapped at the root and lead ultimately to cracking.
Therefore, we request that you provide additional information to document the welding process used on the above joint design.
If shielded metal arc welding was used, then you should also address what action you plan to take to address the concern about stress corrosion cracking.
In order to expedite the review, the above evaluation has been discussed with representatives of APS and CE.
Since you desire to load fuel in the very near future, resolution of this matter in an expeditious manner is imperative if we are to complete our review in a timely fashion.
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Yan Brunt, Jr. If you have any questions regarding this letter, you should contact Manny Licitra, the Licensing Project Manager.
Sincerely, cc:'ee next page DISTRIBTUION
{gocket-F-i~le NRC PDR Local PDR PRG System NSIC LBg3 Reading JLee EALicitra OELD, Attorney ACRS (16)
EJordan NGrace George Knighton, Chief Licensing Branch No.
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Palo Verde Hr. E.
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Van Brunt, Jr.
Vice President - Nuclear Projects Arizona Public Service Company P. 0.
Box 21666
- Phoenix, Apizona 85036 Arthur C. Gehr, Esq.
,Snell
& Wilmer 3100 Valley Center
1200 West Washington'Phoenix',
Arizona 85007 Charles R. Kocher, Esq. Assistant Counsel James'A.
- Boeletto, Esq.
Southern California Edison Company "P. 0.
Box 800
- Rosemead, California 91770 fls. Margaret Walker Deputy Director of Energy Programs Economic Planning and Development Office 1700 West Washington Phoenix, Arizona 85007 Hr. Rand L. Greenfield Assistant Attorney General Bataan Memorial Building Santa Fe, New Mexico 87503 Resident Inspector Palo Verde/NPS U.S. Nuclear Regulatory Commission P. 0.
Box 21324
- Phoenix, Arizona 85001 Ms. Patricia Lee Hourihan 6413 S. 26th Street
- Phoenix, Arizona 85040 Regional Administrator - Region V
U. S. Nuclear Regulatory Commission 1450 Maria Lane Suite 210 Walnut Creek, California 94596 Kenneth. Berlin, Esq.
Winston 8 Strawn Suite 500 2550 M Street, NW Washington, DC 20037 Ms. Lynne Bernabei Government Accountabi lity Project of the Institute for Policy Studies 1901 Que Street, NW Washington, DC 20009 Hs. Jill Morrison 522 E. Colgate Tempi, Arizona 85238
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