ML19317G684
| ML19317G684 | |
| Person / Time | |
|---|---|
| Site: | Rancho Seco |
| Issue date: | 05/04/1972 |
| From: | Rich Smith NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION V) |
| To: | Mattimoe J SACRAMENTO MUNICIPAL UTILITY DISTRICT |
| Shared Package | |
| ML19317G673 | List: |
| References | |
| NUDOCS 8003250754 | |
| Download: ML19317G684 (2) | |
See also: IR 05000312/1972001
Text
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UNITED STATES
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- ATOMIC ENERGY COMMISSION
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DIVislON OF COMPLIANCE
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REGION V
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2111 BANCROFr WAY
BERKELEY, CAI.lFoRNIA 94704
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May 4, 1972
Sacramento Municipal Utility District
Docket No. 050-0312
P. O. Box 15830
Sacramento, California 95813
Attention:
Mr. John J. Mattimoe
Chief Engineer
Gentlemen:
This refers to the inspection conducted by Mr. Dodds and other members of
this office on March 9, 20-24, and April 6,1972, of construction activities
authorized by AEC Construction Permit No. CPPR-56, and to the discussion
held by Mr. Dodds with Mr. Mattimoe and other members of your staff, and
Bechtel project representatives, at the conclusion of the inspection.
Areas examined during this inspection included (1) the nondestructive testing
techniques used for the constructien of the containment vessel liner, Class I
site-fabricated vessels, and Class I piping other than primary system piping,
(2) your QA program, (3) plant operating organization and personnel training,
(4) operations pertaining to the placement of the reactor vessel, (5) receiving,
storage, and installation of selected Class I ct,mponents, and (6) a lack of
fusion condition in the root pass of stainless steel pipe welds.
Within
these areas, the inspection consisted of selective examinations of procedures
and representative records, interviews with project personnel, and observations
by the inspectors.
The inspection also included an examination of tha actions you have taken
with respect to the items identified in our letter of January 14, 1972. We
have no further questions concerning those items.
During this inspection, it was found that certain of your activities appeared
to be in nonconformance w2.th AEC requirements. The items and references to
the pertinent requirements are listed in the enclosure to this letter.
Please
provide us within 30 days, in writing, with your cormnents concerning these
items, any steps that have been or will be taken to correct them, any steps
that have been or will be taken to prevent recurrence, and the date all
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Sacramento Municipal Utility Distr.
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May 4, 1972
corrective actions or preventive measures were or will be completed. Your
comments in response to the second item in the enclosure should include
information on the bases used for your acceptance of the containment vessel
liner welding as conforming to ASME Code requirements.
It is our understanding, with respect to the following items, that you intend
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to take the actions indicated:
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1.
A report concerning the discovery of a lack of fusion condition in
the root pass of stainless steel pipe welds will be submitted to the
Division of Compliance by May 30, 1972.
2.
The bulging (inward displacement) and the out-of-plumb condition of the
containment vessel liner place will be re-evaluated and reported as
appropriate to the Division of Compliance in accordance with the new
reporting requirements of 10CFR50.55, adopted April 1972. It was
noted that the inward displacement of the liner between liner anchors
exceeded the parameters used in your original analysis for acceptance
of the bulging.
3.
Grinding operations of carbon steel and stainless steel fittings will
be examined and precautions taken to eliminate the potential for
contaminating stainless steel end-preparations with carbon steel
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pa rticles .
These items will be examined during the next inspection.
Should you have any questions concerning this inspection, we will be glad
to discuss them with you.
Sincerely,
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R. W. Smith
Director
Enclosure:
a/s
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V. P. McMahon, SMUD
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J. B. Henderson, CO
L. Kornblith, C0
R. H.'Engelken, CO
P. A. Morris, DRL
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DR Central Files
Local PDR
Thomas Laughlin, DTIE
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