ML19242A366
| ML19242A366 | |
| Person / Time | |
|---|---|
| Site: | Crane  |
| Issue date: | 07/17/1979 |
| From: | Herbein J METROPOLITAN EDISON CO. |
| To: | Reid R Office of Nuclear Reactor Regulation |
| References | |
| GQL-0902, GQL-902, NUDOCS 7908010505 | |
| Download: ML19242A366 (1) | |
Text
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ost O Box 8 Middletown, Pennsylvania 17057 717 944-4041 July 17, 1979 GQL 0902 Director of Nuclear Reactor Regulations Attn:
R. W. Reid, Chief Operating Reac;; ors Branch #4 U.S. Nuclear Regulatory Commisrion Washington, D.C.
20555
Dear Sir:
Three Mile Island Nuclear Station, Unit 1 (TMI-1)
Operating License No. DPR-50 Docket No. 50-289 Piping Cracks The following status of the TMI-l piping cracks investigation is provided as requested by your Mr. Chris Nelson on July 12, 1979 Status as of 0800, 07-12-79 System No. of Welds Inspected No. of UT Indications Spent Fuel Cooling 272 67 Pacay Heat Removal 366 89 Building Spray 194 52 Make-Up & Purif.
188 21 Core Flood 0
0 Table #1 in our letter of June 30, 1979 (GQL 0865), indicated that a total of 15 " visual leaks" were found. These " visual leaks" were identified at areas where baron crystal precipitation was found on the piping. These areas were subsequently re-excmined to verify the existance of through-wall cracks in the piping. As a result it was found that only six of the 15 " visual leaks" were in fact through-wall pipe cracks. Of the six leaks, five were in the Spent Fuel Cooling System, and one was in the Decay Heat Removal System.
As stated in.GQL 0865, the next followup report will be submitted by August 15, 1979.
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