BECO-LTR-96-037, Requests Approval to Carry Out Side Stream Testing of Mexel 432 at Pilgrim Site in Effort to Reduce Use of Chlorine to Maintain & Improve Biofouling Control in Seawater Cooling Sys.Technical Info & Matl Safety Data Sheets Attached

Requests Approval to Carry Out Side Stream Testing of Mexel 432 at Pilgrim Site in Effort to Reduce Use of Chlorine to Maintain & Improve Biofouling Control in Seawater Cooling Sys.Technical Info & Matl Safety Data Sheets Attached

ML20113A645
Person / Time
Site:	Pilgrim
Issue date:	06/13/1996
From:	Boulette E BOSTON EDISON CO.
To:	Downing J ENVIRONMENTAL PROTECTION AGENCY
References
BECO-LTR-96-037, BECO-LTR-96-37, NUDOCS 9606250062
Download: ML20113A645 (12)

Text

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e e w anra,an Pdgnm Nuclear Power Stat,on t Rocky Hdi Road Plymouth, Massachusetts 02360 i

E. T. Boulette, PhD June 13, 1996 .

Senor Vice President-Nuclear BECo Ltr.96-037 4

Ms. Jane Downing Director, Office of Ecosystem Protection U.S. Environmental Protection Agency JFK Federal Building ,

Boston, MA 02203

Dear Ms. Downing:

1 As part of the ongoing effort to reduce the use of chlorine (sodium hypochlorite) to maintain and improve biofouling control in seawater cooling systems, Pilgrim Nuclear Power Station (PNPS) is requesting approval to carry out side stream testing of MEXEL*) 432. This testing would be carried out at the Pilgrim site for a 6-12 month period beginning in July,1996 and will be performed by Marine Biocontrol Corporation, the biofouling consultant to PNPS.

D aring the side stream test period, a small test facility would be located near the intake of the plant. We propose to draw untreated sea water from the intake to supply 10-20 gallons per minute to each of the eight (8) test modules in the facility. Test modules would be treated with MEXEL*)  ;

at various concentrations and intervals. The test facility combined effluent would be under 200gpm and would drain into the plant discharge canal. We anticipate MEXEL*) concentration in the facility effluent would be < 20 ppm prior to mixing, and given the dilution of the plant discharge, MEXEL*) would be undetectable in that stream.

Attached are the technicalinformation and material safety data sheets for MEXEL*) 432. We would appreciate your written approval for use of this chemical at PNPS as described above by July 1,1996. Please contact Mr. Robert D. Anderson at (508) 830-7935 should you need further information regarding this matter. l LLb E. T. Boulette, PhD Entosures: 1. MSDS Sheet

2. MEXEL*) 432 Technical Information ETB/RDA/radmisc/pate. doc cc: See next page i

Ok 9606250062 960613 PDR ADOCK 05000293 P pm \t l

i cc: Mr. Paul Hogan Office of Watershed Management 40 Institute Road North Grafton, MA 01536 U.S. Nuclear Regulatory Commission Region 1 475 Allendale Road King of Prussia, PA 19406 U.S. Nuclear Regulatory Commission Attn: Document Control Desk Washington, DC 20555 Senior Resident inspector Pilgrim Nuclear Power Station

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MEXEL 432 .

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! FATE OF MEXEL 432 IN THE ENVIRONNENT i

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SUMMARY

Mexel 432 is rarely found in the effluent streams ofplants using it for treating raw water systems, due to (1) its migration to the surfaces of piping and

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l equipment in the system and (2) its biodegradability. The effects of Mexel 432 are .

j confined within the system being treated. Because dosing is intermittent and at sub-t lethal concentrations, only organisms that remain within the system are at risk.  ;

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1 Mexel 432 migrates to the wetted surfaces of piping and equipment of systems undergoing treatment.

) Its efficacy requires its presence on the surfaces, not in the bulk water flow; it is effective without '

j maintaining a continuous lethal concentration in the circulating water. Dosage in an operating '

l system may be optimized to eliminate detectable concentrations in the effluent.

f Mexel 432 blodegrades rapidly in the presence of oxygen to carbon dioxide, water, and a trace of l i nitrogen oxide. The rate of blodegradation increases with increasing temperature and with increasing

[ oxygen availability, and can be accelerated by agitation and by aeration. Mexel 432 decomposes in

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j the presence of chlorine or other oxidizing agents. ,

4 j The French national utility 81ectricits de France (EDF) has performed extensive tests on the i

j blodegradability of Mexel 432 at a nuclear power plant near Cattenom in eastern France. This plant is situated on the Moselle River, and its environment approximates that of many installations along

the Mississippi and other rivers in the central USA. These test Fesults have been corroborated in I additional testing at sites on other rivers in Europe.

A The following graphs are a part of these studies, and they describe the rate of biodegradation of Mexel 432 under varied controlled laboratory conditions. The half life of Mexel 432 in Moselle i River water is 22 hours2.546296e-4 days <br />0.00611 hours <br />3.637566e-5 weeks <br />8.371e-6 months <br /> at 66*F. water temperature.

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6 BIODEGRADATION OF MEXEL 432 0,00 r : - 0,9981

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~l k = 0,0}14 h in 2 = 22 h t

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0 50 100 150 T (hours)

After 191 hours0.00221 days <br />0.0531 hours <br />3.158069e-4 weeks <br />7.26755e-5 months <br /> there was no detectable residue.

Test conditions:

20 ppm starting concentration Moselle River water Averige temperature = 66*F.

[O21w. = 9.6 ppm Calculations:

Half life of Mexel 432 in environment = 22 hours2.546296e-4 days <br />0.00611 hours <br />3.637566e-5 weeks <br />8.371e-6 months <br /> C.O.D. = 460 grams 0 2per kilogram B.O.D. = 420 grams 0, per kilogram

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BIODEGRADATION IN MOSELLE Ri\/ER WATER Tested September 10,1991 i

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BIODEGRADATION OF MEXEL IN RETENTION POND WATER September 25,1991 2

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M E K R I-

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l Mexel@ 432 - One product to control BIOFOULING l

l CORROSION l SCALING

! In fresh water and sea water l

l With no adverse environmental impact

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! Mexel 432 is protected by international patents and trademark registration.

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MEXEL 432 l BIODEGRADABILITY 0.m in tC/C.J Moselle River water Average temperature = 1S C.

20 ppm starting concentration 4m _

1 [0 12 sat. = 9.6 ppm

\ Half-life = 22 hours2.546296e-4 days <br />0.00611 hours <br />3.637566e-5 weeks <br />8.371e-6 months <br /> 1 1 0 50 100  :.ke Tihourse Produces no toxic. carcinogenic, or corrosive byproducts CONTROLS DIOFOULING Prevents formation of biofilm and settling of macrofouling species Disperses pre-existing macrofouling infestations .

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REDUCES CORROSION Inhibits corTosion in fresh water and salt water Prevents MIC of stainless steels Reduces metal loss from non-ferrous metal equipment l

Retards formation of tubercles in iron and steel piping i

RETARDS FOULING Prevents build-up of scale and deposits Disperses pre-existing scale and deposits

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MEXEL 432 e

6 APPLICATION hiexel 432 is a film-fomiing product with dispcrsant activity. It differs from other water

) treatment products in that it treats the wetted surfaces rather than treating the bulk water flow.

Injected near the water inlet, hiexel 432 migrat s to the surfaces of piping and equipment and forms a film. This film prevents the settling of mussels, barnacles, and other macrofouling species and gradually disperses esisting infestations.

i DOSAGE d

Dosage is a function of the wetted surface area of piping and equipment. not water flow rate.

f The typical dosage of hiexel 432 is injected during a short period of time. once per day.

During the course of treatment the dosage is " customized" for the system to ensure adequate protection and minimum dis:harge. This limits the effects of hiexel 432 to species that remain within the system being treated: it has negligible impact on the environment outside the system.

MONITORING s l

The concentration of hiexel 432 can be monitored by a simple colorimetric test. The presence of the protective film can be monitored by measurement of the electrical potential of the system surfaces.

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SAFETY hiexel 432 is non-explosive, non-flammable, and non-volatile. It has low mammalian toxicity, and it is safe to transport. store. and handle. It usage requires no site insentory of dangerous substances. and it can be safels applied by plant personnel without special training or equipment.

hiexel 432 is alkaline, with pH of 11. Contact with eyes and skin should be avoided. Persons handling hiexel 432 should be equipped with gloves and eye protection. Other specialized protective clothing is generally not required.

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MEXEL 432

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l TECHNICAL DATA l Appearance Off-w hite liquid Flash point Non-flammable Density at 20 C. 0.997 Viscosity at 20 C. 420 cp hiiscibility with water Complete Freezing point i C.

COD 458g. 02/kg.

LD50 rat (oral) 7766 mg/kg LC50 Daphnia (24 hour2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br />) 3.1 mg/l I

hiexel 432 contains no halogens. sulfur. metals, aromatics, cyclic compounds, or quarternary j ammonium compounds.

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REGISTRATION l Niexel 432 is registered as a pesticide by the USEPA and has been approved by the Dutch hiinistry of hiines for use in the Netherlands offshore waters. It is approved for use in many other countries for use in control of corrosion. scaling, and biofouling. i REFERENCES hiexel 432 is in use throughout the world in industrial, commercial. marine, and offshore applications. References are available on request. l MANUFACTURER hiexel S.A. R.L.

B.P.No.I 133. Rue du Gendral hiesny F 59481 Haubourdin. France Telephone 20.07.60.61 Fax 20.44.78.22 DISTRIBUTED BY RTK TECHNOLOGIES, INC.

Post Office Box 86622 Baton Rouge, LA 70879-6622 (504) 755-2194 voice and fax

Material Safety Data Sheet U.S. Department of Labor Occupational Safety and Health Administration May be used Ic ecmply etn (Non. Mandatory Form)

OSHNs Hantd Communicaten Standard.

29 CFr31910.1200. Stancard must be Form Approved consulted for specific requirements. OMB No.1218-0072 Notc: Blank scaces are not pemutted. I any JIern is not a:chcatie. or no lCENTITY (As Used on Lstet and Lat) <*'m'xa 8 8vada de. ine :: ace must ce marree to eocav sna:

MEXEL 432 Section 1 Emeynef Te'e;ncne Number Manufac:urer's Name SOCIETE Mi m 011-33-20-07-6061 Te ephone Numcer for informanon Address (Number. Streef. C#y. State. and Z/P Coce) 133, RUE DU GENERAL lESNY 011-33-20-07-6061 Cate Prepared ~

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JUNE 14, 1995 - 1 F 59481 HAUBOURDIN Segnature of Preparer (opponat)

FRANCE Section 11 - Hazardous Ingredients /ldentity Information ,

coer umas ACGlH TLV Recom/nenced  % (cpaonah Hazardous Components (Scec:nc Chemeal Icentry, Common Name(s)) OSHA FEL THIS PRODUCT IS AN EMULSION IN WATER OF A COMPLEI MIXTURE OF FATTY ACID ADDUCTS OF ALK DIAMINES AND ETH0XYLATED AMINES. PLUS NON-HAZARDOUS INGREDIENTS.

Section ill - Physical / Chemical Characteristics .

.peonc Gravny (H2 O = 1) **

Bosng Pown Memng Point l Vapor Pressure (mm Ng) . M.. .

l N.A. N.A.

Evaporacon Rate' Va:mt Densay (AIR = 1)

N.A. (suy Ace ate = 11 N.A_

Sotuosty n water MISCIBLE IN ALL PROPORTIONS Acrearance ano ocar OFF-WHITE TO YELLOW VISCOUS LIQUID, CHARACTERISTIC ODOR Section IV - Fire and Explosion Hazard Data Fiamtracle Umas LEL UEL F. ash Pouw (Method Usec)

NOT COMBUSTIBLE - N. A. N.A. N.A.

T A ER R .'

Soecal Fra Fghting Procecures EIERCISE CAUTION VHENFIGHTING ANY CFEMICAL FIRE. 9 Unusual Fwe and Esp 6osen Hazaros . . se NONF ..

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S:ction V --Reactivity Data .

StacAry, Unstabw Conditons o Avoc

'staoie 1

X N.A.

incompatiedity oraterais to Ao,v)

NONE UNDER NORMAL CONDITIONS Hazardous oecompesnen or eyprxuc$0NE UNDER NORMAL CONDITIONS Hazarceus May Occur Coremons to Avoid Po#ymenzaton wa Not occur X N.A.

Section VI - Health Hazard Data

• NOT UNDERTdM CONDITIONS YE9 W '

CORROSIVE TO EYES, DIGESTIVE SYSTDi, AND SKIN 1

Carcmogen.c:ry- N P7 IARC ro;raphs? CSHA egulated?

5.gns and Symptoms of Espesure SKIN CONTACT: REDNESS, PAIN: CAUSES BURNS. EYE CONTACT: REDNESS, PAIN, BLURRED VISION.

INGESTION: SORE THROAT, ABDOMINAL PAIN.

Med.cai conemons Generapy Aggravated by Exposure PERSONS WITH PRE-EXISTING SKIN DISEASE MAY BE AT AN INCREASED RISK IF EXPOSED DERMALLY TO THIS MATERIAL.

Emergency and First A4 Procecures INGESTION: RINSE MOUTH WITH WATER. DO NOT INDUCE VOMITING. SEEK MEDICAL ATTENTION. SKIN OR EYE CONTACT: RINSE IMMEDIATELY WITH WATER. SEEK MEDICAL ATTENTION IF SYMPTOMS PERSIST.

I S:ction VII - Precautions for Safe Handling and Use bdb'IE CLYIf[N NEW'dITH N ER"PIOT5CTION. CLEAN UP SPILLS AS S0ON AS POSSIBLE. . COLLECT PRODUCT WITH ABSORBENT MATERIAL. DILUTE RESIDUES AND FLUSH WITH WATER.

Waste Disocsa! Metnod DISPOSE OF IN A SAFE MANNER IN ACCORDANCE WITH APPLICABLE FEDERAL AND LOCAL REGULATIONS.

50NC'fI!iNG$h3L $ LYE 3ORIGINALCONTAINERWHENNOTINUSE.

Ctner Precautions HANDLE IN ACCORDANCE WITH GOOD SAFETY AND INDUSTRIAL HYGIENE PROCEDURES. WASH HANDS AND l OTHER EXPOSED AREAS BEFORE EATING, DRINKING, OR SM0 KING, AND WHEN LEAVING WORK.

Section Vill - Control Measures '

Resonratory Protocon (Specty Type)

NOT REQUIRED UNDER NORMAL CONDITIONS.

ventdacon Local E2aust -

N.A. .A. I Mechanical (General)

N.A. N.A.

Protectrve Gloves Eye Protecuon l YES YES i Oiner Protectrve Ckxning or Equement ~

_SPECIAL PROTECTIVE CLOTHING NOT ABSOLUTELY NECESSARY.

Work /Hygienec Pracces AVOID CONTACT VITH SKIN.

Pope 2 e u.L e + *'aa a=* m.aua, om.n u n-n i4weaus 4

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