ML19317F801
| ML19317F801 | |
| Person / Time | |
|---|---|
| Site: | Rancho Seco |
| Issue date: | 06/16/1971 |
| From: | Spencer G US ATOMIC ENERGY COMMISSION (AEC) |
| To: | Henderson J US ATOMIC ENERGY COMMISSION (AEC) |
| Shared Package | |
| ML19317F802 | List: |
| References | |
| 18272, NUDOCS 8002210562 | |
| Download: ML19317F801 (2) | |
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DIVISION OF COMPLIANCE REGloN V 4
her s t' 21115ANCROFT WAY BERKELEY, CALIFORNIA 94704 rn.m ai-sin ext..si June 16, 1971 J. B. Henderson, Chief Reactor Construction Branch Division of Compliance, Headquarters SACRAMENTO MUNICIPAL UTILITY DISTRICT (RANCHO SECO)
DOCKET No. 50-312 The attached report by our field inspectors of an announced visit to the subject construction site on May 17-19, 1971 is forwarded for information.
No safety problems or deficiencies yere identified during the inspection.
dL g BasedondiscussionswithMr.WhJ. Collins,CO:HQ,weconsiderthe
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ASTM A-262 standard procedure (ditching test) an acceptable method to determine sensitization in stainless steel tubing. Use of this procedure
,U to determine sensitization of air quenched pipe with a wall thickness of 0.375 inch has shown an absence of significant sensitization. Since the SWEPCO pipe that was in question at Rancho Seco is orily 0.5 inches thick, tea consider the matter resolved. However, the vendor inspection group may still wish to review in the future SWEPCO air quenching practices concerning thicker walled pipe possibly being supplied to other facilities.
The preoperational environmental survey program appears to be consistent with the description provided in the FSAR. The off-site environmental survey stations have been located in accordance with population density.
Therefore, according to the licensee, no stations have been located NE and SE of the plant (direction of prevailing winds) since this area is primarily range land for beef cattle.
You will note that our inspector discussed with the licensee several of the significant problems that have recently been encountered during construction of other nuclear power stations.
' %d r/zc/n mmh 2L g
/Q a G. S. S encer CO:V:RTD Senior Reactor Inspector
Enclosure:
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CO.Rpt No 50-312/71.I, V by R. T. Dodds dtd 6/16/71 g
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8002210
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-J. B. Henderson
--2 June 16, 1971 J-I cc w/ encl:
-E. G. Case, DRS (3)
- R. S. Boyd, DRL (2)
R. C. DeYoung, DRL (2)
D. J. Skovholt, DRL (3) i P. W. Howe, DRL (2) 2
- A. Giambusso, CO i
- L. Kornblith, Jr., CO
-R. H. Engelken,'CO Regional Directors, CO REG Files 4
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