IR 05000249/1972013: Difference between revisions
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| number = ML17252B022 | | number = ML17252B022 | ||
| issue date = 09/25/1972 | | issue date = 09/25/1972 | ||
| title = | | title = RO Inquiry Report 05000249/1972013Q Regarding the Discovery of High Steam and High Condensate Flow Switches to Be Out of Calibration | ||
| author name = Dance H | | author name = Dance H | ||
| author affiliation = US Atomic Energy Commission (AEC) | | author affiliation = US Atomic Energy Commission (AEC) | ||
| addressee name = | | addressee name = | ||
| Line 18: | Line 18: | ||
=Text= | =Text= | ||
{{#Wiki_filter:: Qr-..._,. . .... . ;* i '* * * U. S. ATOMIC ENERGY COMMISSION DIRECTORATE OF REGULATORY OPERATIONS REGION III RO Inquiry Report No. 050-249/72-13Q Subject: | {{#Wiki_filter:: Qr-..._,. . .... . ;* i '* * * U. S. ATOMIC ENERGY COMMISSION DIRECTORATE OF REGULATORY OPERATIONS REGION III RO Inquiry Report No. 050-249/72-13Q Subject: Commonwealth Edison Company License No. DPR-25 Dresden Unit 3 Isolation Condenser High Flow Switch Out of Calibration Prepared By: H. C. Dance ' ( Nitv'"""L.....--- | ||
Commonwealth Edison Company License No. DPR-25 Dresden Unit 3 Isolation Condenser High Flow Switch Out of Calibration Prepared By: H. C. Dance ' ( Nitv'"""L.....--- | |||
A. Date and Manner AEC was Informed: | A. Date and Manner AEC was Informed: | ||
B. RO:III was informed by T. Watts, Operating Engineer, via telephone on September 25, 1972. Description of Particular Event or Circumstance: | B. RO:III was informed by T. Watts, Operating Engineer, via telephone on September 25, 1972. Description of Particular Event or Circumstance: | ||
During ,quarterly surveillance testing the isolation condenser | During ,quarterly surveillance testing the isolation condenser | ||
*IC) high and high condensate flow switches were found tci be out of calibration as shown below. Circuit As Left*Setting High steam flow 417 + 3 inches High condensate flow 30 + 1 inch As Found Setting Tech Spec 426 .5", 435 .O" <425 inches 33.3", 33.5" -32 inches These switches initiate closure of the IC isolation valves in of line | *IC) high and high condensate flow switches were found tci be out of calibration as shown below. Circuit As Left*Setting High steam flow 417 + 3 inches High condensate flow 30 + 1 inch As Found Setting Tech Spec 426 .5", 435 .O" <425 inches 33.3", 33.5" -32 inches These switches initiate closure of the IC isolation valves in of line failure. C. Action by Licensee: | ||
The licensee reset the. switches to the as-left setting shown above when the condition was found. After data was reviewed, it was decided that future settings would be left at 400 +/- 5 inches for steam flow and 28.5 +/-one inch for condensate flow. The licensee intends to report this occurrence in accordance with license requirement ... REGUIATORY OPERATIONS REGION III RO Inquiry Report No. : 050-249/72-13Q Transmittal September 25, 1972 Distribution: | The licensee reset the. switches to the as-left setting shown above when the condition was found. After data was reviewed, it was decided that future settings would be left at 400 +/- 5 inches for steam flow and 28.5 +/-one inch for condensate flow. The licensee intends to report this occurrence in accordance with license requirement ... REGUIATORY OPERATIONS REGION III RO Inquiry Report No. : 050-249/72-13Q Transmittal September 25, 1972 Distribution: | ||
RO Chief, Reactor Test and Operations Branch RO:HQ (5) DR Central Files Regulatory Standards (3) Licensing (13) PDR Local PDR NSIC DTIE, OR .. | RO Chief, Reactor Test and Operations Branch RO:HQ (5) DR Central Files Regulatory Standards (3) Licensing (13) PDR Local PDR NSIC DTIE, OR .. . * *-.. REC"D & | ||
. * *-.. REC"D & | |||
9-27-72 Muller, H. Denton, Tedesco, Docket file ** 50-249 to the Vollmer, following Boyd (2) Hendrie; Operational Skovhoft (2) Safety Br.* | 9-27-72 Muller, H. Denton, Tedesco, Docket file ** 50-249 to the Vollmer, following Boyd (2) Hendrie; Operational Skovhoft (2) Safety Br.* | ||
}} | }} | ||
Latest revision as of 04:14, 19 June 2019
| ML17252B022 | |
| Person / Time | |
|---|---|
| Site: | Dresden  |
| Issue date: | 09/25/1972 |
| From: | Dance H US Atomic Energy Commission (AEC) |
| To: | Commonwealth Edison Co |
| References | |
| IR 1972013Q | |
| Download: ML17252B022 (2) | |
Text
- Qr-..._,. . .... . ;* i '* * * U. S. ATOMIC ENERGY COMMISSION DIRECTORATE OF REGULATORY OPERATIONS REGION III RO Inquiry Report No. 050-249/72-13Q Subject: Commonwealth Edison Company License No. DPR-25 Dresden Unit 3 Isolation Condenser High Flow Switch Out of Calibration Prepared By: H. C. Dance ' ( Nitv'"""L.....---
A. Date and Manner AEC was Informed:
B. RO:III was informed by T. Watts, Operating Engineer, via telephone on September 25, 1972. Description of Particular Event or Circumstance:
During ,quarterly surveillance testing the isolation condenser
- IC) high and high condensate flow switches were found tci be out of calibration as shown below. Circuit As Left*Setting High steam flow 417 + 3 inches High condensate flow 30 + 1 inch As Found Setting Tech Spec 426 .5", 435 .O" <425 inches 33.3", 33.5" -32 inches These switches initiate closure of the IC isolation valves in of line failure. C. Action by Licensee:
The licensee reset the. switches to the as-left setting shown above when the condition was found. After data was reviewed, it was decided that future settings would be left at 400 +/- 5 inches for steam flow and 28.5 +/-one inch for condensate flow. The licensee intends to report this occurrence in accordance with license requirement ... REGUIATORY OPERATIONS REGION III RO Inquiry Report No. : 050-249/72-13Q Transmittal September 25, 1972 Distribution:
RO Chief, Reactor Test and Operations Branch RO:HQ (5) DR Central Files Regulatory Standards (3) Licensing (13) PDR Local PDR NSIC DTIE, OR .. . * *-.. REC"D &
9-27-72 Muller, H. Denton, Tedesco, Docket file ** 50-249 to the Vollmer, following Boyd (2) Hendrie; Operational Skovhoft (2) Safety Br.*