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Category:NPDES NONCOMPLIANCE NOTIFICATION
MONTHYEARHL-2260, NPDES Noncompliance Notification:On 920529,all 3 Unit 1 Cooling Towers Were Overflowing.Caused by Restriction in Cooling Tower Return Flow.Cooling Tower Screens Cleaned1992-06-11011 June 1992 NPDES Noncompliance Notification:On 920529,all 3 Unit 1 Cooling Towers Were Overflowing.Caused by Restriction in Cooling Tower Return Flow.Cooling Tower Screens Cleaned ML20087A5031992-01-0303 January 1992 NPDES Noncompliance Notification:On 911230 Sample Indicated That Chlorinated Water Was Being Discharged to Altamaha River.Caused by Failure of Valve Which Isolates Chlorine Addition Sys from Svc Water Sys Intake.Valve Replaced HL-2002, NPDES Noncompliance Notification:On 911230,chlorinated Water Discharged Into Altamaha River Due to Internal Failure of Valve Which Isolates Chlorine Addition Sys from Svc Water Sys Intake.Failed Valve Replaced1992-01-0303 January 1992 NPDES Noncompliance Notification:On 911230,chlorinated Water Discharged Into Altamaha River Due to Internal Failure of Valve Which Isolates Chlorine Addition Sys from Svc Water Sys Intake.Failed Valve Replaced HL-1925, NPDES Noncompliance Notification:On 911107,sample from Cooling Tower Basin Recorded Value Greater than 2 Ppm Free Available Chlorine/Total Residual Chlorine.Caused by Malfunction of Valve Torque Switch.Valve Manually Secured1991-11-15015 November 1991 NPDES Noncompliance Notification:On 911107,sample from Cooling Tower Basin Recorded Value Greater than 2 Ppm Free Available Chlorine/Total Residual Chlorine.Caused by Malfunction of Valve Torque Switch.Valve Manually Secured ML20133F2401985-07-30030 July 1985 NPDES Noncompliance Notification:On 850620,6,000 Gallons of Glycol Solution Discharged Into Altamaha River.State of Ga,Environ Protection Div Granted Util Permission for Disposal on 850619 ML19320A7011980-06-27027 June 1980 NPDES Noncompliance Notification:On 800619,at Full Power Operation,Circulating Water Chlorination Sequence Was Automatically Activated,Resulting in Release of Free Available Chlorine in Cooling Water Blowdown ML19323E4181980-05-16016 May 1980 NPDES Noncompliance Notification:On 800512,facility Circulating Overflow Exceeded NPDES Limit of 0.2 Ppm Average Residual Chlorine & 0.5 Ppm Max Residual Chlorine. Chlorine Analyzer Repaired & Returned to Svc 1992-06-11
[Table view] Category:TEXT-ENVIRONMENTAL REPORTS
MONTHYEARHL-5778, Ei Hatch Nuclear Plant Radiological Environ Operating Rept for 1998. with1998-12-31031 December 1998 Ei Hatch Nuclear Plant Radiological Environ Operating Rept for 1998. with HL-5780, Ei Hatch Unit 1 & 2 Annual Rept of Plant Radioactive Effluent Releases for 1998. with1998-12-31031 December 1998 Ei Hatch Unit 1 & 2 Annual Rept of Plant Radioactive Effluent Releases for 1998. with HL-5773, 1998 Annual Environ Operating Rept (Nonradiological), for Ei Hatch Plant,Units 1 & 2.With1998-12-31031 December 1998 1998 Annual Environ Operating Rept (Nonradiological), for Ei Hatch Plant,Units 1 & 2.With ML20154B8941998-09-28028 September 1998 Environ Assessment & Finding of No Significant Impact Re Licensee Dose Assessment for Plant.Commission Has Determined Not to Prepare Environ Impact Statement for Proposed Action HL-5621, Annual Radioactive Effluent Release Rept for Ei Hatch Nuclear Plant Covering Jan-Dec 19971997-12-31031 December 1997 Annual Radioactive Effluent Release Rept for Ei Hatch Nuclear Plant Covering Jan-Dec 1997 HL-5618, 1997 Annual Environ Operationg Rept, for Ei Hatch Nuclear Plant,Units 1 & 21997-12-31031 December 1997 1997 Annual Environ Operationg Rept, for Ei Hatch Nuclear Plant,Units 1 & 2 HL-5630, Ei Hatch Nuclear Plant Radiological Environ Operating Rept for 19971997-12-31031 December 1997 Ei Hatch Nuclear Plant Radiological Environ Operating Rept for 1997 ML20211N6371997-10-10010 October 1997 NPDES Permit GA0004120,issued to Southern Nuclear Operating Co ML20140J0701997-04-15015 April 1997 Amend to NPDES Permit GA0004120 Issued to Southern Nuclear Operating Co HL-5344, Annual Environ Operating Rept for 19961996-12-31031 December 1996 Annual Environ Operating Rept for 1996 ML20138G5511996-12-31031 December 1996 Ei Hatch Nuclear Plant Annual Radioactive Effluent Release Rept for Jan-Dec 1996 HL-4553, Edwin I Hatch Nuclear Plant Radiological Environ Operation Rept,19961996-12-31031 December 1996 Edwin I Hatch Nuclear Plant Radiological Environ Operation Rept,1996 HL-5127, Ei Hatch Nuclear Plant Annual Environ Surveillance Rept for 19951995-12-31031 December 1995 Ei Hatch Nuclear Plant Annual Environ Surveillance Rept for 1995 HL-5149, Ei Hatch Nuclear Plant Annual Radioactive Effluent Release Rept for Jan-Dec 19951995-12-31031 December 1995 Ei Hatch Nuclear Plant Annual Radioactive Effluent Release Rept for Jan-Dec 1995 HL-5147, Ei Hatch Nuclear Plant Radiological Environ Operating Rept for 19951995-12-31031 December 1995 Ei Hatch Nuclear Plant Radiological Environ Operating Rept for 1995 HL-4785, Fitness for Duty Performance Data for six-month Reporting period,Jul-Dec 19941994-12-31031 December 1994 Fitness for Duty Performance Data for six-month Reporting period,Jul-Dec 1994 HL-4831, Ei Hatch Nuclear Plant Units 1 & 2 Annual Rept Plant Radioactive Effluent Releases Jan-Dec 19941994-12-31031 December 1994 Ei Hatch Nuclear Plant Units 1 & 2 Annual Rept Plant Radioactive Effluent Releases Jan-Dec 1994 ML20082L1971994-12-31031 December 1994 Ei Hatch Nuclear Plant Radiological Environ Surveillance Rept for 1994 ML20092K2521994-12-31031 December 1994 Revised Pages to Plant Hatch Annual Radioactive Effluent Release Rept 1994 HL-4813, Annual Environ Surveillance Rept1994-12-31031 December 1994 Annual Environ Surveillance Rept HL-4515, Semiannual Radioactive Effluent Release Rept for Jul-Dec 19931993-12-31031 December 1993 Semiannual Radioactive Effluent Release Rept for Jul-Dec 1993 HL-4537, Annual Environ Surveillance Rept for 19931993-12-31031 December 1993 Annual Environ Surveillance Rept for 1993 ML20065P2221993-12-31031 December 1993 Ei Hatch Nuclear Plant Annual Radiological Environ Surveillance Rept for 1993 HL-3428, Plant Ei Hatch,Units 1 & 2 Semiannual Radioactive Effluent Release Rept,Jan-June 19931993-06-30030 June 1993 Plant Ei Hatch,Units 1 & 2 Semiannual Radioactive Effluent Release Rept,Jan-June 1993 HL-2371, Plant Ei Hatch Units 1 & 2 Semiannual Radioactive Effluent Release Rept,Jan-June 19921992-06-30030 June 1992 Plant Ei Hatch Units 1 & 2 Semiannual Radioactive Effluent Release Rept,Jan-June 1992 HL-2260, NPDES Noncompliance Notification:On 920529,all 3 Unit 1 Cooling Towers Were Overflowing.Caused by Restriction in Cooling Tower Return Flow.Cooling Tower Screens Cleaned1992-06-11011 June 1992 NPDES Noncompliance Notification:On 920529,all 3 Unit 1 Cooling Towers Were Overflowing.Caused by Restriction in Cooling Tower Return Flow.Cooling Tower Screens Cleaned ML20087A5031992-01-0303 January 1992 NPDES Noncompliance Notification:On 911230 Sample Indicated That Chlorinated Water Was Being Discharged to Altamaha River.Caused by Failure of Valve Which Isolates Chlorine Addition Sys from Svc Water Sys Intake.Valve Replaced HL-2002, NPDES Noncompliance Notification:On 911230,chlorinated Water Discharged Into Altamaha River Due to Internal Failure of Valve Which Isolates Chlorine Addition Sys from Svc Water Sys Intake.Failed Valve Replaced1992-01-0303 January 1992 NPDES Noncompliance Notification:On 911230,chlorinated Water Discharged Into Altamaha River Due to Internal Failure of Valve Which Isolates Chlorine Addition Sys from Svc Water Sys Intake.Failed Valve Replaced ML20094G7251991-12-31031 December 1991 Semiannual Radioactive Effluent Release Rept for Jul-Dec 1991 ML20094G7361991-12-31031 December 1991 Joint Frequency Tables of Wind Speed & Wind Direction 60m Vs Delta Temp 60-10m for Jan-Dec 1991 HL-2121, Annual Environmental Surveillance Rept - 19911991-12-31031 December 1991 Annual Environmental Surveillance Rept - 1991 HL-2173, Annual Radiological Environ Surveillance Rept,CY91. W/1991-12-31031 December 1991 Annual Radiological Environ Surveillance Rept,CY91. W/ HL-1925, NPDES Noncompliance Notification:On 911107,sample from Cooling Tower Basin Recorded Value Greater than 2 Ppm Free Available Chlorine/Total Residual Chlorine.Caused by Malfunction of Valve Torque Switch.Valve Manually Secured1991-11-15015 November 1991 NPDES Noncompliance Notification:On 911107,sample from Cooling Tower Basin Recorded Value Greater than 2 Ppm Free Available Chlorine/Total Residual Chlorine.Caused by Malfunction of Valve Torque Switch.Valve Manually Secured HL-1785, Georgia Power Co Plant,Ei Hatch Units 1 & 2 Semiannual Radioactive Effulent Release Rept,Jan-June 19911991-06-30030 June 1991 Georgia Power Co Plant,Ei Hatch Units 1 & 2 Semiannual Radioactive Effulent Release Rept,Jan-June 1991 ML20029A6841990-12-31031 December 1990 Plant Ei Hatch Semiannual Radioactive Effluent Release Rept Jul-Dec 1990. W/910227 Ltr HL-1541, Annual Environ Surveillance Rept for 19901990-12-31031 December 1990 Annual Environ Surveillance Rept for 1990 ML20073D5761990-12-31031 December 1990 1990 Annual Radiological Environ Surveillance Rept HL-1251, Semiannual Radioactive Effluent Release Rept for Jan-June 19901990-06-30030 June 1990 Semiannual Radioactive Effluent Release Rept for Jan-June 1990 ML20042E8711989-12-31031 December 1989 Annual Radiological Environ Surveillance Rept CY89. W/ 900426 Ltr ML20012B8401989-12-31031 December 1989 Semiannual Radioactive Effluent Release Rept for Jul-Dec 1989. W/900301 Ltr ML20246F5041989-06-30030 June 1989 Semiannual Radioactive Effluent Release Rept for Jan-June 1989 ML20245C2381988-12-31031 December 1988 Annual Radiological Environ Surveillance Rept CY88. W/ ML20235V5381988-12-31031 December 1988 Semiannual Rept Plant Radioactive Effluent Releases, Jul-Dec 1988 ML20153C6401988-06-30030 June 1988 Semiannual Rept Plant Radioactive Effluent Releases Jan-June 1988 ML20147B2281987-12-31031 December 1987 Semiannual Rept,Plant Effluent Releases,Jul-Dec 1987. W/ ML20151W1221987-12-31031 December 1987 Environ Radiation Monitoring Rept for 1987 ML20151V9571987-12-31031 December 1987 Annual Radiological Environ Surveillance Rept for CY87 ML20151B5741987-12-31031 December 1987 Augmented Radiological Surveillance Monitoring, for 1987 ML20150E7201987-12-31031 December 1987 Annual Environ Surveillance Rept for 1987 ML20235V5161987-12-31031 December 1987 Revised Pages to Semiannual Rept Plant Radioactive Effluent Releases,Jul-Dec 1987 1998-09-28
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neor t HL-1925 002522 November 15, 1991 U.S. Nuclear Regulatory Commission ATTN: Document Control Desk Washington, D.C. 20555 PL ANT HATCH - UtilT 2 NRC DOCKET 50-366 OPERATING LICENSE NPF-5 HPDES PERMIT NONCOMPLIANCE Gentlemen:
In accordance with the requirements of Plant Hatch Environmental Technict i Specifications, Section 4.3, attached is a copy of a report made s to tP ueorgia Department of Natural Resources concerning a noncompliance s with rlPDES permit number GA.0004120. This report is applicabic to Plant k Hatch - Unit 2.
Should you have any questions, please contact this office.
Sincerely, a yrL L -
J.T.Beckham,Jr.M b/
JKB/cr 002522 Enclosure cc: 0_eorcia Power Company Mr. H. L. Sumner, General Manager - Nuclear Plant NORMS U.S. Nuclear Rgaulatory Commission. Washinoton. D.C.
Mr. K. Jabbour, Licensing Project Manager - Hatch V . S . Nuc1 e a.r_Legul a t o r y C ommi s s i on . RestigrLil Mr. S. D. Ebneter, Regional Administrator Mr. L. D. Wert, Senior Resident inspector - Hatch
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U r,e;er utennnga,9ccc e,, rice November 12, 1991 ELANT HATCl!
NPDES Permit No. GA0004120 Unit 2 Cooling Tower Blowdown Valve Mr. Lawrence W. Hedges Program Manager, Industrial Waste Water Program 205 Butler Street, SE - Room 1070 Atlanta, Georgia 30334
Dear Mr. Hedges:
Attached la a description of the Unit 2 Cooling Tower Blowdown Valve malfunction and unplanned release of chlorine to the Altamaha River which was previously reported to you on November 7, 1991. This report is submitted in accordance with Part II A.2. of the above referenced NPDES permit.
If you have questions or comments, please advise.
Yours very truly, b.h hkw~
C. M. Hobson
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GNG:kd Attachment xc: Mr. Larry P. Kloot, Environmental Engineer
Plant E. I, llatch HPDES Permit No. GA0004120 Descrintion of Event on Thursday November 7, 1991, at approximately 08n0 EST, Plant Hatch began a normal chlorination cycle for the Unit 2 circulating water system. The cooling tower flume level had been previously lowered and sodium hypochlorite was injected into the system until approximately 0815 EST. After closing the valve on the sodium hypochlorite tank, Plant Hatch chemistry personnel obtained a sample from the cooling tower basin and recorded a value of greater than 2 ppm Free Available Chlorine / Total Residual Chlorine (FAC/TRC), Chemistry personnel then proceeded to obtain a sample from the flume. At this time it was observed that the flume level had decreased significantly. Operations personnel investigated the situation and determined that the Unit 2 cooling tower blowdown valve was open. The Unit 2 control room was immediately notified, and the valve was manually closed locally.
As a result of the valve being open, not all of the NPDES Permit requirements for monitoring of the Unit 2 cooling tower blowdown line during periods of chlorination were satisfied. Samples are not required to be routinely taken from the cooling tower blowdown line; therefore, there were no samples taken from the line during the approximato 50 minute period of unplanned chlorine discharge.
The discharge from the blowdown valve was diluted with other effluent water streams prior to discharge to the Altamaha River.
No adverse environmental impact w..s observed to have occurred as a result of the period of unmonitored chlorine discharge, cause of Event The primary cause of the event is attributed to malfunction of the Unit 2 cooling tower blowdown valve torque switch. Failure to follow procedure contributed to the cause of the event. The Operations procedure requires the operator to observe the flume level when the blowdown valve is open and to observe the flume level for one hour following manipulation of the valva until the flume level stabilizes. In this case the operator returned to the control room for shift change without waiting the prescribed time of one hour. This resulted in the decrease in flume level remaining unobserved during the discharge to the river.
Prior to b-, ginning the chlorination process the cooling tower blowdown valve had " red and " green" position indicating lights illuminated. The normal indication for valve position is " red" for open and " green" for closed. A
- red" and " green" indication reflects the valve being in an irmediate position. The valve was confirmed to be in the closed position earlier in the shift with both lights on the panel illuminited. Though not required this confirmation was normally performed as a good practice and consisted of a verification that lilution flow from the valve as
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zero as read in the radwaste control room. On the morning of November 7, 1991, the valve was returned to the closed position following operation of the valve to lower the flume level. At this time both indicating lights again were illuminated. The cooling tower blowdown valve torque switch malfunctioned such that the valve did not properly close. This failure to close was not proporly identified due to the malfunction of limit switches which provide the open and closed valve indication in the control room.
The torque switch senses valve closure and terminates valve movement. No additional verification of the valvo position as previously described was conducted when both indicating lights were illuminated. The operator assumed the valve was closed and approved the initiation of circulating water system chlorination.
However, the torque switch had malfunctioned and the valve remained in an intermediate position.
As a rusult of the torque switch malfunction and the failure to properly follow the procedure the valve remained open during the chlorination cycle.
Entiod of Event The duration of the event was approximately 50 minutes.
Chlorination of the Unit 2 circulating water system began at approximately 0800 EST and was terminated at 0815; the blowdown valve was secured at approximately 0850 EST.
Actions Taken to Reduce, Eliminate, and Prevent RecurrRD92 Upon discovery of the open condition, the blowdown valve was manually secured. Chlorination of the circulating water systen was suspended pending investigation into the cause of the problem. No additional mitigative action was necessary. No adverse environmental impact to the Altamaha River was observed as a result of the incident.
Georgia Power Company Environmental Affairs was notified upon confirmation of details associated with the incident.
Environmental Affairs notified Mr. Lawrence Kloot, State of Georgia Environmental Protection Division (EPD), of the incident at approximately 1415 EST. The Nuclear Regulatory Commission vac subsequently notified.
The torque svitch and the position indication circuitry for the Unit 2 cooling tower blowdown valve have been repaired.
Appropriate personnel will be counseled with regard to the failure to follow the referenced procedure.
EUFEJ:Y Based on assessment of the above information, no adverse environmental impact to the Altamaha River occurred as a result of this incident. Plant Hatch has taken appropriate actions to ensure the incident does not recur.
The above information is submitted in accordance with the provisions of Part II A. 2. of the Plant Hatch NPDES Permit (No.
GA0004120).
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