ML17252B138: Difference between revisions

From kanterella
Jump to navigation Jump to search
(Created page by program invented by StriderTol)
(Created page by program invented by StriderTol)
Line 14: Line 14:
| page count = 2
| page count = 2
}}
}}
See also: [[see also::IR 05000249/1976020]]


=Text=
=Text=
{{#Wiki_filter:.} '. ... ,,_ . :\ Mr. James G. Keppler, Director Directorate  
{{#Wiki_filter:.} '. ... ,,_ . :\ Mr. James G. Keppler, Director Directorate  
*of Inspection  
*of Inspection and Enforcement  
and Enforcement  
-Region III U.S. F!uclear Regulatory Conunission 799 Roosevelt Road Glen Ellyn, Illinois 60137 November 8, 1976 Su1.:>j0ct:
-Region III U.S. F!uclear Regulatory  
Dresde.n Station Unit 3  
Conunission  
 
799 Roosevelt  
==Dear Mr. Keppler:==
Road Glen Ellyn, Illinois 60137 November 8, 1976 Su1.:>j0ct:  
Response to IE.Inspection Report No. 50-249/76-20 NRC *Docket No. SO-i49 Attached is Commonwealth Edison's response to the item noted under Enforcement Action in the subject report. Neither this response nor the subject inspection report contain proprietary information.
Dresde.n Station Unit 3 Dear Mr. Keppler: Response to IE.Inspection  
Please address any questions on the *matter to this office. Very truly yours, U, f/001-;/ R. L. . Assistant Vice President Attachment NOV 10 i976 \
Report No. 50-249/76-20  
Commonwealth Edison Company Dkt.
NRC *Docket No. SO-i49 Attached is Commonwealth  
Attc:oi_chment Infraction:
Edison's response to the item noted under Enforcement  
Failu:ce to verify fuel grapple "Hoist Loaded" light . . Discussion:
Action in the subject  
Dm:ing unloading the fuel from the Dresden Unit 3 reactor, Procedure DFP 800-10 step F.l.h was not followed completely.
report. Neither this response nor the subject inspection  
Step F.l.h reads as follows: "Slov1ly raise the grapple, using the grapple lever and the load fl9at switch, and verify that the fuel assembly is moving up as follov1s:
report contain proprietary  
: 1) The *slack cable indicator light should go out. . 2) The hoist loaded indicator ligb.ts".
information.  
During this particular operation, the **Hoist Loaded" indicator "1:1as not during the .t"irst few feet of lifting the from the reactor core. The load cell had been checked using the 400 pound grapple test weight in accordance with sfirveillance Procedure DOS 800-1 steps j-1. The internal grapple. friction loads are apparently changed slightly under conditions different from DOS 800-1. If inrproper hoist loaded light operation is observed under certain operating conditions different than DOS 800-1 condifions, it will be necessary to reset the load cell for the actual conditions to obtain proper operation.
Please address any questions  
Corrective Action: .. The fuel grapple load cell was reset to actuate the hoist loacl.ed light lifting a fuel assembly in the reactor core. Corrective Action to Prevent Recurrence:
on the *matter to this office. Very truly yours,  
Procedure DI"P 800-7 "Fuel Handling' Inside the F.eactor" step F.*1.1, DFP 800-8 ''Control Rod Blade Guide Movements Between and in the Spent .Fuel Storage Pool and the Reactor" step F.6.j, and DFP 800-10 "Fuel Eovements from the Reactor to the Storage Pool" step F.l.h i;vill be revised. These revisions  
U, f/001-;/ R. L. . Assistant  
'dill allO\*J verification that the :Cuel assembly is moving up as the grapple is raised by visual observation of the :fuel assembly or by servation of the. hoist loaded light. An note will be added to these 9rocedure steps to point out the relationship of the hoist loaded light sensitivity to grapple position.
Vice President  
These procedures will be. revised prior to next refueling activities on Dresden Units 2 or 3. l l}}
Attachment  
NOV 10 i976 \
Commonwealth  
Edison Company  
Dkt.  
Attc:oi_chment  
Infraction:  
Failu:ce to verify fuel grapple "Hoist Loaded" light . . Discussion:  
Dm:ing unloading  
the fuel from the Dresden Unit 3 reactor, Procedure  
DFP 800-10 step F.l.h was not followed completely.  
Step F.l.h reads as follows: "Slov1ly raise the grapple, using the grapple lever and the load fl9at switch, and verify that the fuel assembly is moving up as follov1s:  
1) The *slack cable indicator  
light should go out. . 2) The hoist loaded indicator  
ligb.ts".  
During this particular  
operation, the **Hoist Loaded" indicator  
"1:1as not  
during the .t"irst few feet of lifting the  
from the reactor core. The load cell had been checked using the 400 pound grapple test weight in accordance  
with sfirveillance  
Procedure  
DOS 800-1 steps j-1. The internal grapple. friction loads are apparently  
changed slightly under  
conditions  
different  
from DOS 800-1. If inrproper  
hoist loaded light operation  
is observed under certain operating  
conditions  
different  
than DOS 800-1 condifions, it will be necessary  
to reset the load cell for the actual conditions  
to obtain proper operation.  
Corrective  
Action: .. The fuel grapple load cell was reset to actuate the hoist loacl.ed light lifting a fuel assembly in the reactor core. Corrective  
Action to Prevent Recurrence:  
Procedure  
DI"P 800-7 "Fuel Handling'  
Inside the F.eactor" step F.*1.1, DFP 800-8 ''Control  
Rod Blade Guide Movements  
Between and in the Spent .Fuel Storage Pool and the Reactor" step F.6.j, and DFP 800-10 "Fuel Eovements  
from the Reactor to the Storage Pool" step F.l.h i;vill be revised. These revisions  
'dill allO\*J verification  
that the :Cuel assembly is moving up as the grapple is raised by visual observation  
of the :fuel assembly or by servation  
of the. hoist loaded light. An  
note will be added to these 9rocedure  
steps to point out the relationship  
of the hoist loaded light sensitivity  
to grapple position.  
These procedures  
will be. revised prior to next refueling  
activities  
on Dresden Units 2 or 3. l l
}}

Revision as of 13:59, 17 August 2019

Letter Regarding Response to the Item Noted Under Enforcement Action in Inspection Report 05000249/1976020 - Dresden Unit 3
ML17252B138
Person / Time
Site: Dresden Constellation icon.png
Issue date: 11/08/1976
From: Bolger R
Commonwealth Edison Co
To: James Keppler
NRC/RGN-III
References
IR 1976020
Download: ML17252B138 (2)
v • d • e


Text

.} '. ... ,,_ . :\ Mr. James G. Keppler, Director Directorate

  • of Inspection and Enforcement

-Region III U.S. F!uclear Regulatory Conunission 799 Roosevelt Road Glen Ellyn, Illinois 60137 November 8, 1976 Su1.:>j0ct:

Dresde.n Station Unit 3

Dear Mr. Keppler:

Response to IE.Inspection Report No. 50-249/76-20 NRC *Docket No. SO-i49 Attached is Commonwealth Edison's response to the item noted under Enforcement Action in the subject report. Neither this response nor the subject inspection report contain proprietary information.

Please address any questions on the *matter to this office. Very truly yours, U, f/001-;/ R. L. . Assistant Vice President Attachment NOV 10 i976 \

Commonwealth Edison Company Dkt.

Attc:oi_chment Infraction:

Failu:ce to verify fuel grapple "Hoist Loaded" light . . Discussion:

Dm:ing unloading the fuel from the Dresden Unit 3 reactor, Procedure DFP 800-10 step F.l.h was not followed completely.

Step F.l.h reads as follows: "Slov1ly raise the grapple, using the grapple lever and the load fl9at switch, and verify that the fuel assembly is moving up as follov1s:

1) The *slack cable indicator light should go out. . 2) The hoist loaded indicator ligb.ts".

During this particular operation, the **Hoist Loaded" indicator "1:1as not during the .t"irst few feet of lifting the from the reactor core. The load cell had been checked using the 400 pound grapple test weight in accordance with sfirveillance Procedure DOS 800-1 steps j-1. The internal grapple. friction loads are apparently changed slightly under conditions different from DOS 800-1. If inrproper hoist loaded light operation is observed under certain operating conditions different than DOS 800-1 condifions, it will be necessary to reset the load cell for the actual conditions to obtain proper operation.

Corrective Action: .. The fuel grapple load cell was reset to actuate the hoist loacl.ed light lifting a fuel assembly in the reactor core. Corrective Action to Prevent Recurrence:

Procedure DI"P 800-7 "Fuel Handling' Inside the F.eactor" step F.*1.1, DFP 800-8 Control Rod Blade Guide Movements Between and in the Spent .Fuel Storage Pool and the Reactor" step F.6.j, and DFP 800-10 "Fuel Eovements from the Reactor to the Storage Pool" step F.l.h i;vill be revised. These revisions

'dill allO\*J verification that the :Cuel assembly is moving up as the grapple is raised by visual observation of the :fuel assembly or by servation of the. hoist loaded light. An note will be added to these 9rocedure steps to point out the relationship of the hoist loaded light sensitivity to grapple position.

These procedures will be. revised prior to next refueling activities on Dresden Units 2 or 3. l l

Retrieved from "https://kanterella.com/w/index.php?title=ML17252B138&oldid=1878653"