ML20211J891

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Rept on Discharge Monitoring at Diablo Canyon Power Plant During Month of May 1986
ML20211J891
Person / Time
Site: Diablo Canyon  Pacific Gas & Electric icon.png
Issue date: 05/31/1986
From: Thornberry R
PACIFIC GAS & ELECTRIC CO.
To: Kenneth Jones
CALIFORNIA, STATE OF
References
NUDOCS 8606270090
Download: ML20211J891 (14)
v • d • e


Text

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4-PACIFIC GAS AND ELECTRIC COMPANY NUCLEAR PLANT OPERATIONS REPORT ON DISCHARGE MONITORING AT DIABLO CANYON POWER PLANT DURING THE MONTH OF MAY 1986 8606270090 860531 PDR ADOCK 05000275 N

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TABLE OF CONTENTS 4

P age Overview . . . . . . . . . . . . . . . . . . . . . . . . . . 1; .

Sumary of Monitoring Program ............... 1 A - Monitoring of Plant Influent and Effluent B - Monitoring of Receiving Waters Appendix 1 - Influent and Effluent Monitoring for May 1986 -

Form Q-2

ll OVERVIEW ,

o  !

During the month of May, discharges were made from discharge paths '

001 (main circulating pumps), 001-A, 001-B, 001-D, 001-E, 001-F, 001-G, 001-H, 001-J, 001-K, 001-L 002, 003, 004, and 005. No discharges were made from discharge paths 001-C nor 001-I.

Chemical, radiochemical and toxicity analyses were performed in '  ;

accordance with chemical analysis procedures contained in the Diablo i Canyon Power Plant, Units 1 and 2 Plant Manual, Volume 8, or by state approved laboratories, or by laboratories approved by the Regional Board staff.

The turbine building sump pump and oily water separator (OWS) for discharge path 001-F, continued to have mechanical problems in early May. The system was taken out of service on May 16 to replace the turbine building sump pumps with new pumps. Additional repairs were made to the 0WS piping and pressurization pumps. The system was returned to service on June 12 with an oil and grease sample analysis of 10 mg/1. A subsequent sample on June 16 had an analysis result of

- 3 mg/1.

On June 18, 1986, during a review of the daily chlorination data sheets for May 1986 it was found that on May 23, we exceeded the j total chlorine concentration limits of 200 ppb on two occassions i during the daily chlorination of the main circulating water. The first occurence was at 1245, chlorine = 205 ppb and the second occurence was at 1445, chlorine = 235 ppb. Both of these samples are

) the first of two samples taken during the thirty minute chlorination cycle. The second samples were taken at 1255, chlorine = 140 ppb and 1455, chlorine = 80 ppb, respectively. Upon confirming with Operations, the proper chlorination rates, and procedures, we could not find a procedural cause for these chlorine concentrations. The out of spec chlorine concentrations were not consistent with previous and subsequent sample results and are believed to be due to instrument malfunction. To prevent further occurrences of out of spec chlorine concentrations attributed to technician error or instrument malfunction, the technicians are being retrained in the use of the chlorine titrators, sampling procedures, techniques, and the importance of reporting out of spec results as soon as they are discovered.

i StM4ARY OF MONITORING PROGRAM A. Monitoring of Plant Influent and Effluent

1. Results of monitoring of plant influent and effluent in April are reported on Form Q-2's found in Appendix 1.
2. A static bioassay of Discharge 001 are performed quarterly in January, April, July, and October.

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B. Monitoring of Receiving Waters

1. Ecological Studies at Diablo Canyon Ecological studies in accordance with the Thermal Effects Monitoring Program (Provision D.4) continue.
2. Sediment Analysis Sediment samples are collected in September.
3. Aerial Photography of Kelp Beds Aerial photography (infrared film type 2443) of kelp beds in the vicinity of Diablo Canyon is required in February, June and October.
4. Surface Water Temperature Surface water temperatures are reported every other month.
5. Stratified Water Temperatures Stratified water temperatures are measured in February, June, and October.

) 6. pH and Dissolved Oxygen of Receiving Waters Monitoring of pH and dissolved oxygen in the receiving waters is scheduled in February, June, and October.

7. Incident Light Measurements Incident light measurements are reported quarterly in the reports submitted in January, April, July, and October.
8. In situ Bioassay Results of the Mussel Watch program will be reported to the Board directly from the California Department of Fish and Game in their periodic report for this program.

4

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APPENDIX 1

  • Influent and Effluent Monitoring May 1986 i

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    • ' REGIONAt sah en duemg efi. day SHIFFER. JAMES D. .

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'N PACIFIC GAS AND E LE C T RIC C O M PANY A

  1. DIABLO CANYON POWER PLANT PO. Box 56 Avila Beach, Cahfomia 93424 *(805) 595-7351 llggggggg '

eg -

R.C. THoRNBERRY PL ANT MANAGER June 20, 1986 Mr. Kenneth R. Jones, Executive Officer California Regional Nater Quality Control Board Central Coast Region 1102-A Laurel Lane San Luis Obispo, California 93401 l

Dear Mr. Jones:

Discharge Monitoring and Reporting Program Diablo Canyon Power Plant The monthly report for May 1986 of the Diablo Canyon Power Plant Discharge Monitoring Program, in accordance with Order 85-101, NPDES No. CA0003751 is enclosed.

I certify under penalty of law that I have personally examined and am familiar with the information submitted in the attached document and all enclosures, and that, based on ny inquiry of those individuals immediately responsible for obtaining the information, I believe the information is true, accurate and complete. The results of the influent and effluent monitoring presented the observed results of the measurements and analyses required by the monitoring program, and is neither an assertion of the adequacy of any instrumant reading or any analytical result, nor an endorsement of the appropriateness of any analytical or measurement procedure. I am aware that there are significant penalties for submitting false information, including the possibility of fine and imprisonment.

Sincerely, b

.C. THORNBERRY Enclosure RCT:cd rP[gt l

bec: WHBarr/TGCasebolt DWBehrens JVBoots PACrane MJDoyle/VLWyman JBGibson/DJWilliamson VCFurtado/JFMcKenzie BSlew/ERKendle 1 RWLorenz/KMGodfrey  !

HKMcCluer l MNNorem WA0'Hara JARobbins JASexton JDShiffer CPWalton JWWarrick CJWeinberg/JRAdams RMS l

l t

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cc: California Department of Fish and Game Marine Resources Region 245 W. Broadway, Suite 350 Long Beach, California 90802 Regional Administrator, Region IX Environmental Protection Agency 215 Fremont Street San Francisco, California 94105 Regional Administrator U. S. Nuclear Regulatory Comission Region 5 1450 Maria Lane, Suite 210 Walnut Creek, California 94596-5368 Mr. Ronald L. Ballard, Chief Environmental and Hydrologic Engineering Branch Division of Engineering Office of Nuclear Reactor Regulation

- U. S. Nuclear Regulatory Commission Washington, DC 20555 Document Control Desk U. S. Nuclear Regulatory Commission Washington, DC 20555 Chief, Marine Resource Branch California Department of Fish and Game Resources Building i 1419 9th Street

! Sacramento, California 95814 l

_ _

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