RBG-33167, NPDES Noncompliance Notification:On 900625,sodium Hypochlorite Spill Occurred at Plant.Caused by Crack in Thermoplastic Hypochlorite Storage Tank.Plastic Tank Removed from Svc & Sys Used for Continuous Chlorination Modified

NPDES Noncompliance Notification:On 900625,sodium Hypochlorite Spill Occurred at Plant.Caused by Crack in Thermoplastic Hypochlorite Storage Tank.Plastic Tank Removed from Svc & Sys Used for Continuous Chlorination Modified

ML20055E306
Person / Time
Site:	River Bend
Issue date:	07/06/1990
From:	Odell W GULF STATES UTILITIES CO.
To:	Oneill M LOUISIANA, STATE OF
References
RBG-33167, NUDOCS 9007110276
Download: ML20055E306 (2)

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( GULF STATES UTILETERS C'OMPANY RIVER DEND St a i tion POST OFFict BOX 220 ' 81 FAANCISVILLE. LOUISIANA 70775 AREA CODE 604 636 6094 346 0661 July 6, 1990 RBG-33,167-File No. G1.11.2.1 Ms. Maureen 0'Neill, Assistant Secretary

,0ffice of Water Resources

. Louisiana Department of Environmental Quality Poct Of fice Box- 44091, Capitol Station Baton Rouge, LA' 70804-4091 Attention: ' Surveillance Section

Dear Ms. O'Neill:

This letter is'a- written follow-up to the telephone notification, made , at 8:19-a.m. on Monday, June 25, 1990, of a sodium hypochlorite spill at River Bend Station.

.A thermoplastic hypochlorite storage tank used for " shock chlorination" ~ of ,

cooling water developed- a small crack resulting in leakage of between 30 and -

50 gallons of 15% .' sodium hypochlorite to the adjacent ground.- The tank's leakage,z approximately 100 cc/ minute, seeped through a construction joint We' contained- the between. the tank's slab and curb, onto the . ground.

accumulating . liquid with' absorbant ' and : a- sand' dike to prevent any chance of the liquid's Jmigration to storm drains. ; Messrs. -

Christopher Simms - and Rich Johnson of -your. ' Hazardous Waste Enforcement and Emergency Response Sections.

inspected the-incident,later that morning and expressed satisfaction with our efforts to mitigate this situation. Caincidentally, on the morning-of June 26,:1990, Mr. Scott Knaus of your Water Quality Section performed a compliance

. audit of our. facility, during which he observed that spt11 cleanup ef forts were underway.

Our Mr. Mike, Harrington contacted Mr. David Brightbill of your Water Quality.:

Surveillance o Section on July 29 to give an interim report of cleanup Jactivities and" to notify that cleanup may not be completed until after July 5, ' and to request permission to submit this- letter by July 6. With Mr.

Brightbill's concurrence, we removed the contents of the storage tank and rinsed both the tank and the construction joint with fresh water. We pumped' the rinsings to the cooling water system, and removed the contaminated soil for disposal at an approved disposal facility.

To prevent recurrence, the plastic tank has .been removed f rom service. The system - used for required continuous low-level chlorination of our se rvice cooling water'it being modified to accomodate intermittant shock chlorination of our cooling covers.

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Mu. O'Neill? Page 2

i 1 - certify under penalty of ~ law that this document and all attachments ~were prepared--under the _' direction or supervision in - accordance with a system- ,

designed to1 assure that qualified personnel properly gather. and evaluate _ the j information submitted. Based on my inquiry of the person 'or persons who

< manage the system, or those persons directly responsible for gathering the ,

information,.the information submitted ;is, to the best of my knowledge and-

. belief, true, accurate and complete. 1 am aware that there are significant penalties for submitting false information including the_ possibility of fine '

and imprisonment for knowing violations.

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3 Sincerely >

a /7 i

W. H. Odell '

Manager - Oversight-

, Ned ' River Bend Nuclear Group,

- n WH0/LAE/MAH/re. .

xes' Louisiana Department of Public Safety and Corrections Hazardous Substance Control Section Right to-Know Unit-.

Post Office Box-66614 Baton' Rouge, La. 70896 U. S. Nuclear Regulatory Commission y '

Document Control Desk-

. .Was hing ton, . D. C . 20555 '(

U. S. Nuclear Regulatory Commission. 4 611 Ryan Plaza Drive, Suite 1000 Arlington, Texas'76011 Nuclear Regulatory Commission, Resident inspector P. O. Box 1051 m S t . '.Francisvill'e , La . 70775 b

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