ML17252B443: Difference between revisions
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| number = ML17252B443 | | number = ML17252B443 | ||
| issue date = 04/07/1976 | | issue date = 04/07/1976 | ||
| title = LER 76-016-00 for Dresden 2 Regarding a Discovery of a Through-Wall Crack | | title = LER 76-016-00 for Dresden 2 Regarding a Discovery of a Through-Wall Crack in the 14-Inch HPCI Sensitized Stainless Steel Safe-End | ||
| author name = Stephenson | | author name = Stephenson B | ||
| author affiliation = Commonwealth Edison Co | | author affiliation = Commonwealth Edison Co | ||
| addressee name = Keppler J | | addressee name = Keppler J | ||
| addressee affiliation = NRC/RGN-III | | addressee affiliation = NRC/RGN-III | ||
| docket = 05000237 | | docket = 05000237 | ||
Line 15: | Line 15: | ||
| page count = 3 | | page count = 3 | ||
}} | }} | ||
=Text= | |||
{{#Wiki_filter:,. | |||
Commonwealth Ason Dresden Nuclear Pow~ation R.R. #1 Morris, Illinois 60450 Telephone 815/942-2920 BBS Ltr. #76-290 April 7, 19 76 Mr. James G. Keppler, Regional Director Directorate of Regulatory Operations - Region III U.S. Nuclear Regulatory Commission 799 Roosevelt Road Glen Ell~n, Illinois 60137 Enclosed please find Reportable Occurrence number 50-237/1976-16. This report is being submitted to your office in accordance with.the Dresden Nuclear Power Station Technical Specifications, Section 6.6.B. | |||
BBS:aw Enclosure cc: Director of Inspection & Enforcement Director of Manage*ment Information & Program Control Fiie/NRC | |||
* ENSEE EVENT REPORT * | |||
** I CONTROL BLOCK: ....~----1..__.._I __._I____.I___.I [PLEASE PRINT ALL REQUIRED INFORMATION] | |||
1 6 LICENSEE LICENSE EVENT NAME , LICENSE NUMBER TYPE TYPE | |||
@EJ IIIJ..l:PI £1 S.IJ I 10101-10101010101-10101 14 I 1 I 11 I r I t I 1011 I 7 8 9 14 15 25 26 30 31 32 REPORT REPORT CATEGORY TYPE SOURCE * , DOCKET NUMBER EVENT DATE REPORT OATL | |||
@ill CON'T I I I *lI..1 LhJ 101s101-101~13171 1013121417101 10 14- I o 17 IClJ I ~ I 7 8 57 5B 5!:) 60 61 68 69 74 75 80 | |||
. EVENT DESCRIPTION lol2l I :Dvg1NG- AN IN~~/.?..VtC<= IN~Pt:CflotJ OF TH'G UJJIT-J_ PR1rr1ARY s YS'I£ fY1 9 A 7 8 9 80 | |||
@@) I rH~OUG-H -WALL CRACK we~ Dl$CO\ICQ,ED IN THE lLf- -,f NCH HPCI S"N$111ZEDI 7 8 9 . 80 lol41 I SIA I IV l-£S.<; STEEL I 7 8 9 80 | |||
~ I \cJAT9e A!\/D wA~ LDCttrcP 01R£cTL.y fff IHf 80-rrorvt or !Hf P1PE. ?./x INCH I 7 8 9. > 80 IQIID f="Rom THE Sfl.F'£-eAJO-TO-P1P WEL(>. 1Cf7b- 1<0) 7 8 9 PRIME 80 SYSTEM CAUSE COMPONENT COMPONENT | |||
. CODE CODE COMPONENT CODE SUPPLIER MANUFACTURER VIOLATION | |||
@0 ICIEI ~ IPlt IPIE:IXIXI lt{J IB 1011 15"147 lNJ 48 . | |||
7 8 9 10 11 12 17 43 44. | |||
CAUSE DESCRIPTION | |||
~.I "11-1£ C..RACKEO S'Ar::-END WAS C..lJT OUI ANifJJ SENI TD 8ATTELU! trlEmOR/ AL , . | |||
.7 8 9 . . ~----- _ _ _ _ _____,._,,...~~ 80 | |||
~ I tNS'Trf'IJTE'- C.OJ..UrYlBVS l.ABo~Aro~1S cro~.. M£T81-L.J.H~&ICAl. ANA~Y5!~. Pf2..tL.1 m1_Ntl1Z-Y Rt:'SL>_'1-"TSI 7 8 9 80 | |||
~ I 11\101 c..a.-i:o IH~ THc TH*wuc.H-wALI- CR.ACK lOUITtL> 3/g 1NCH FRcM IHE' WE~P W.J!l5; I 7 8 9 FACILITY METHOD OF (~t:E: ltf-rfk.tfct> S HCe'T) 80 STATUS % POWER OTHER STATUS DISCOVERY DISCOVERY DESCRIPTION EE] UiJ le>IOIOI NA l.ill 7 8 9 10 12 13 44 45 FORM OF ACTIVITY CONTENT rn 7 8 RELEASED 9 | |||
~ | |||
OF RELEASE l6j 10 | |||
_I_ _ | |||
11 AMOUNT OF ACTIVITY N_A----'-----' | |||
44 45 LOCATION OF RELEASE 80 PERSONNEL EXPOSURES NUMBER TYPE DESCRIPTION IT@ 1010101 1£1 Nii 7 8 9 11 12 13 80 PERS'ONNEL INJURIES NUMBER DESCRIPTION . | |||
EE]lololol11 7 89 NA 1~2~~~~~.-~~~~~~~~~~~~~~~~~~~~~~~~~~~ ............ | |||
80 OFFSITE CONSEQUENCES | |||
~* NII 7 8 9 80 LOSS OR DAMAGE TO FACILITY TYPE DESCRIPTION EI~l~ ~_,_JJ_~"'--~~~~~~~~~~~~~~~~~~~-----..,~~~. . . . . . | |||
7 8 9 10 80 PUBLICITY | |||
@?] | |||
7 8 9 80 ADDITIONAL FACTORS IT@ NA 7 8 9 80 PHONE: cx-r. .l.~ s: | |||
GPO 881 | |||
* 667 | |||
CAUSE DESCRIPTION (continued) | |||
-1/4 in-ch- long -at the O.D: and 2 inches long at the I.D~, running circum-ferentially. Two axial cracks between 1/2 inch and 1 inch in length were also found on the I.D. surface, emanating from the safe ... end-to-pipe weld. | |||
Analysis of the!?e cracks has not yee been completed. An update report will be submitted when results become available. | |||
The cracked safe-end was manufac~ured from SA-182 F316 stainless steel and was unclad. The safe-end had been furnace-sensitized during manufacture. The replacement safe-end will be either SA-182 F316L stain-less steel or SA-105 carbon steel.}} |
Latest revision as of 20:08, 29 October 2019
ML17252B443 | |
Person / Time | |
---|---|
Site: | Dresden ![]() |
Issue date: | 04/07/1976 |
From: | Stephenson B Commonwealth Edison Co |
To: | James Keppler NRC/RGN-III |
References | |
BBS Ltr. #76-290 LER 76-016-00 | |
Download: ML17252B443 (3) | |
Text
,.
Commonwealth Ason Dresden Nuclear Pow~ation R.R. #1 Morris, Illinois 60450 Telephone 815/942-2920 BBS Ltr. #76-290 April 7, 19 76 Mr. James G. Keppler, Regional Director Directorate of Regulatory Operations - Region III U.S. Nuclear Regulatory Commission 799 Roosevelt Road Glen Ell~n, Illinois 60137 Enclosed please find Reportable Occurrence number 50-237/1976-16. This report is being submitted to your office in accordance with.the Dresden Nuclear Power Station Technical Specifications, Section 6.6.B.
BBS:aw Enclosure cc: Director of Inspection & Enforcement Director of Manage*ment Information & Program Control Fiie/NRC
- ENSEE EVENT REPORT *
- I CONTROL BLOCK: ....~----1..__.._I __._I____.I___.I [PLEASE PRINT ALL REQUIRED INFORMATION]
1 6 LICENSEE LICENSE EVENT NAME , LICENSE NUMBER TYPE TYPE
@EJ IIIJ..l:PI £1 S.IJ I 10101-10101010101-10101 14 I 1 I 11 I r I t I 1011 I 7 8 9 14 15 25 26 30 31 32 REPORT REPORT CATEGORY TYPE SOURCE * , DOCKET NUMBER EVENT DATE REPORT OATL
@ill CON'T I I I *lI..1 LhJ 101s101-101~13171 1013121417101 10 14- I o 17 IClJ I ~ I 7 8 57 5B 5!:) 60 61 68 69 74 75 80
. EVENT DESCRIPTION lol2l I :Dvg1NG- AN IN~~/.?..VtC<= IN~Pt:CflotJ OF TH'G UJJIT-J_ PR1rr1ARY s YS'I£ fY1 9 A 7 8 9 80
@@) I rH~OUG-H -WALL CRACK we~ Dl$CO\ICQ,ED IN THE lLf- -,f NCH HPCI S"N$111ZEDI 7 8 9 . 80 lol41 I SIA I IV l-£S.<; STEEL I 7 8 9 80
~ I \cJAT9e A!\/D wA~ LDCttrcP 01R£cTL.y fff IHf 80-rrorvt or !Hf P1PE. ?./x INCH I 7 8 9. > 80 IQIID f="Rom THE Sfl.F'£-eAJO-TO-P1P WEL(>. 1Cf7b- 1<0) 7 8 9 PRIME 80 SYSTEM CAUSE COMPONENT COMPONENT
. CODE CODE COMPONENT CODE SUPPLIER MANUFACTURER VIOLATION
@0 ICIEI ~ IPlt IPIE:IXIXI lt{J IB 1011 15"147 lNJ 48 .
7 8 9 10 11 12 17 43 44.
CAUSE DESCRIPTION
~.I "11-1£ C..RACKEO S'Ar::-END WAS C..lJT OUI ANifJJ SENI TD 8ATTELU! trlEmOR/ AL , .
.7 8 9 . . ~----- _ _ _ _ _____,._,,...~~ 80
~ I tNS'Trf'IJTE'- C.OJ..UrYlBVS l.ABo~Aro~1S cro~.. M£T81-L.J.H~&ICAl. ANA~Y5!~. Pf2..tL.1 m1_Ntl1Z-Y Rt:'SL>_'1-"TSI 7 8 9 80
~ I 11\101 c..a.-i:o IH~ THc TH*wuc.H-wALI- CR.ACK lOUITtL> 3/g 1NCH FRcM IHE' WE~P W.J!l5; I 7 8 9 FACILITY METHOD OF (~t:E: ltf-rfk.tfct> S HCe'T) 80 STATUS % POWER OTHER STATUS DISCOVERY DISCOVERY DESCRIPTION EE] UiJ le>IOIOI NA l.ill 7 8 9 10 12 13 44 45 FORM OF ACTIVITY CONTENT rn 7 8 RELEASED 9
~
OF RELEASE l6j 10
_I_ _
11 AMOUNT OF ACTIVITY N_A----'-----'
44 45 LOCATION OF RELEASE 80 PERSONNEL EXPOSURES NUMBER TYPE DESCRIPTION IT@ 1010101 1£1 Nii 7 8 9 11 12 13 80 PERS'ONNEL INJURIES NUMBER DESCRIPTION .
EE]lololol11 7 89 NA 1~2~~~~~.-~~~~~~~~~~~~~~~~~~~~~~~~~~~ ............
80 OFFSITE CONSEQUENCES
~* NII 7 8 9 80 LOSS OR DAMAGE TO FACILITY TYPE DESCRIPTION EI~l~ ~_,_JJ_~"'--~~~~~~~~~~~~~~~~~~~-----..,~~~. . . . . .
7 8 9 10 80 PUBLICITY
@?]
7 8 9 80 ADDITIONAL FACTORS IT@ NA 7 8 9 80 PHONE: cx-r. .l.~ s:
GPO 881
- 667
CAUSE DESCRIPTION (continued)
-1/4 in-ch- long -at the O.D: and 2 inches long at the I.D~, running circum-ferentially. Two axial cracks between 1/2 inch and 1 inch in length were also found on the I.D. surface, emanating from the safe ... end-to-pipe weld.
Analysis of the!?e cracks has not yee been completed. An update report will be submitted when results become available.
The cracked safe-end was manufac~ured from SA-182 F316 stainless steel and was unclad. The safe-end had been furnace-sensitized during manufacture. The replacement safe-end will be either SA-182 F316L stain-less steel or SA-105 carbon steel.