ML20086L461
| ML20086L461 | |
| Person / Time | |
|---|---|
| Site: | Peach Bottom  |
| Issue date: | 04/29/1974 |
| From: | Robert Carlson NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION I) |
| To: | Thornburg H US ATOMIC ENERGY COMMISSION (AEC) |
| Shared Package | |
| ML20086L448 | List: |
| References | |
| NUDOCS 8402080245 | |
| Download: ML20086L461 (1) | |
See also: IR 05000278/1974004
Text
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ATOMIC ENERGY COMMISSION
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DIRECTO R A T E OF R E G U L ATO RT OPE R A TION S
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631 PARK AVENUE
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KING oF PRUSSI A. PENNSYLVANI A 19406
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H. D. Thornburg, Chief
FC&E Branch
DN 50-278, PEACH BOTTOM UNIT NO. 3 - GRINNELL SNUBBERS - ORIFICE BLOCKS
In response to the Licensing letter of January 11, 1974, Philadelphia
Electric Company submitted their response dated March 14, 1974, a copy
of which we have attached for your information. While Licensing's
letter addressed the problems with seal materials, the licensee's
response referred, in addition, to the unexpected behavior of snub-
bers observed during the Unit No. 2 start-up piping surveillance
program.
The consequences of this unexpected behavior are alluded
to in the licensee's response and are discussed in RO Inspection
Report No. 50-278/74-04 (Details, Paragraph 11), a copy of which is
!
enclosed.
The licensee ascribed this problem to undersized orifices
and instituted a program for the replacement of orifice blocks in
i
276 Grinnell snubbers in Peach Bottom Units No. 2 and No. 3.
We recommend that this matter be evaluated to determine:
(1) whether
the results of the responses from all addressees indicate a generic
problem; and, (2) if further action appears necessary based on the
above determination.
- "J
hRobertT.Carlson, Chief
Enclosure: As Stated
[
FC&ES Branch
cc:
K. Seyfrit, Chief
TA Branch, RO:HQ
8402080245 740605
gDRADOCK 05000277