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7065 - Supply of Cooling System Glycol & Corrosion Inhibitor, 3.Specifications (3)Status: Approved Confidential Document id: DBAE138291 - Page 1 (4)  Wärtsilä Corporation Finland Technology RAW WATER QUALITY AND VALIDATED COOLING WATER ADDITIVES AND TREATMENT SYSTEMS This doc. is the property of Wärtsilä Corp. and shall neither be copied, shown or communicated to a third party without the consent of the owner. Subtitle Product Made 09.10.1998 K. Juoperi / P. Hanstén Page Document No Rev Instruction 20, 26, 31, 32, 38, 46, 46F, 50, 64, 31SG, 34SG, 34LPG, 50SG, 20DF, 31DF, 32DF, 34DF, 46DF, 50DF Appd. 12.10.1998 E. Fontell 1 (4)4V92A0765 m Made 11.05.2015 Checked 11.05.2015 Approved 12.05.2015 Change Notice: CN-A018774F. Zhang K. Juoperi A. Vakkila RAW WATER QUALITY AND VALIDATED COOLING WATER ADDITIVES AND TREATMENT SYSTEMS FOR WÄRTSILÄ® VASA 32/32LN, WÄRTSILÄ® 20, WÄRTSILÄ® 26, WÄRTSILÄ® 31, WÄRTSILÄ® 32, WÄRTSILÄ® 38, WÄRTSILÄ® 46, WÄRTSILÄ® 46F, WÄRTSILÄ® 50, WÄRTSILÄ® 64, WÄRTSILÄ® 20DF, WÄRTSILÄ® 31DF, WÄRTSILÄ® 32DF, WÄRTSILÄ® 34DF, WÄRTSILÄ® 46DF, WÄRTSILÄ® 50DF, WÄRTSILÄ® 31SG, WÄRTSILÄ® 34SG, WÄRTSILÄ® 34LPG AND WÄRTSILÄ® 50SG ENGINE TYPES RAW WATER QUALITY Raw water quality to be used in the closed cooling water circuits of engines has to meet the following specification. Property Unit Limits for chemical use Limits for WWCU*) use Test method reference pH 1) - 6,5 – 8,5 6,5 – 8,5 ASTM D 1287 or D 1293 Hardness °dH max. 10 max. 10 ASTM D 1126 Chlorides 1) mg/l max. 80 max. 40 ASTM D 512 or D 4327 Sulphates mg/l max. 150 max. 100 ASTM D 516 or D 4327 *) Wärtsilä Water Conditioner Unit Use of raw water produced with an evaporator as well as a good quality tap water will normally ensure that an acceptable raw water quality requirement is fulfilled, but e.g. sea water and rain water are unsuitable raw water qualities. 1) If a Reverse Osmosis (RO) process is used, min. limit for pH is 6,0 based on the RO process operational principle. The use of water originating from RO process further presumes that a max. content of 80 mg/l for chloride content is achieved. VALIDATED COOLING WATER ADDITIVES Manufacturer Additive name Additive type Alm International S.A. Diaprosim RD11 (RD11M) Sodium nitrite S.A. Arteco N.V. Havoline XLI Organic Acid Technology Drew Marine Liquidewt Maxigard Sodium nitrite + borate Sodium nitrite + borate REFERENCE ONLY | Action Code: F | 10/12/2016 | BMCD# 94619-5.1150-00288 Status: Approved Confidential Document id: DBAE138291 - Page 2 (4) Page 2 (4) Document No 4V92A0765 Rev m Manufacturer Additive name Additive type Chevron (Texaco + Caltex) Havoline XLI XL Corrosion Inhibitor Concentrate Organic Acid Technology Organic Acid Technology GE Water and Process CorrShield NT 4293 CorrShield NT 4200 Sodium nitrite + borate Sodium nitrite + borate Korves Oy Pekar J Organic Acid Technology Kuwait Petroleum (Danmark) AS Q8 Corrosion Inhibitor Long- Life Organic Acid Technology Marine Care B.V. Caretreat 2 Diesel Sodium nitrite + borate Maritech AB Marisol CW Sodium nitrite + borate Nalco Chemical Company TRAC102 (ex-Nalcool 2000) TRAC118 (ex-Nalfleet EWT 9-108) Sodium nitrite + borate Sodium nitrite + borate Solenis (ex- Ashland Water Technologies) Drewgard 4109 Liquidewt Maxigard Sodium nitrite + borate Sodium nitrite + borate Sodium nitrite + borate Total WT Supra Organic Acid Technology Vecom Marine Alliance B.V. Cool Treat NCLT (ex-Vecom CWT Diesel QC-2) Sodium nitrite + borate Wilhelmsen Chemicals AS (ex. Unitor & Nalfleet) Dieselguard NB Rocor NB liquid Cooltreat AL Engine Water Treatment 9-108 Nalfleet 2000 Sodium nitrite + borate Sodium nitrite + borate Organic Acid Technology Sodium nitrite + borate Sodium nitrite + borate In order to prevent corrosion in the cooling water system, the instructions of right dosage and concentration of active corrosion inhibitors should always be followed. The information can be found in the table below. Product designation Dosage per 1 m³ of system capacity Concentration of active corrosion inhibitor Diaprosim RD11 (RD11M) 5 kg 1250 ppm as NO2 XL Corrosion Inhibitor Concentrate 50 - 100 litres 1,8 – 3,7 Brix° of active compounds measured with a supplier’s refractometer Drewgard 4109 Liquidewt Maxigard 16 – 30 litres 8 – 12 litres 16 – 30 litres 640 – 1200 ppm as NO2 470 – 700 ppm as NO2 640 – 1200 ppm as NO2 Havoline XLI 50 - 100 litres 1,8 – 3,7 Brix° of active compounds measured with a supplier’s refractometer Corrshield NT 4293 CorrShield NT 4200 10 litres 10 litres 670 – 1000 ppm as NO2 670 – 1000 ppm as NO2 Pekar J 20 litres 30 ppm as Mo Q8 Corrosion Inhibitor Long-Life 50 – 100 litres 1.8 – 3.7 Brix° of active compounds measured with a supplier’s refractometer Caretreat 2 Diesel 6 - 10 litres 1500 – 2500 ppm as NO2 Marisol CW 6 – 9 litres 1000 – 1500 ppm as NO2 Status: Approved Confidential Document id: DBAE138291 - Page 3 (4) Page 3 (4) Document No 4V92A0765 Rev m Product designation Dosage per 1 m³ of system capacity Concentration of active corrosion inhibitor TRAC102 TRAC118 32 – 48 litres 2.25 - 3.4 litres 1000 - 1500 ppm as NO2 670 - 1000 ppm as NO2 WT Supra 50 - 100 litres 1,8 – 3,7 Brix° of active compounds measured with a supplier’s refractometer Cool Treat NCLT (ex- Vecom CWT Diesel QC-2) 6 - 10 litres 1500 – 2500 ppm as NO2 Dieselguard NB Rocor NB Liquid Cooltreat AL Engine Water Treatment 9-108 Nalfleet 2000 2,0 – 4,8 kg 9,5 - 24 litres 50 – 100 litres 2,25 – 3,4 litres 32 - 48 litres 1000 - 2400 ppm as NO2 1000 - 2400 ppm as NO2 1,8 – 3,7 Brix° of active compounds measured with a supplier’s refractometer 670 - 1000 ppm as NO2 1000 - 1500 ppm as NO2 Note 1: For many products the recommended minimum and maximum limits are listed in the table above. Since the amount of active corrosion inhibitors, especially nitrites, is decreasing during the service of engines, the engine manufacturer recommends to start the dosage from the upper level of indicated range. Note 2: The nitrite content of nitrite-based cooling water additives tends to decrease in use. The risk of local corrosion increases substantially when nitrite content goes below the recommended limit. Note 3: Cooling water additive manufacturers can indicate the required nitrite content measured either as sodium nitrite, NaNO2 or as nitrite, NO2. 1 mg/l as NO2 equals to 1.5 mg/l as NaNO2. Note 4: Nitrite based cooling water additives are not offering a good protection against corrosion for aluminium and its alloys and thus the use of such products can’t recommended for cooling systems containing those construction materials. Note 5: Different cooling water additives shall not be mixed with each other, but if it is desired to start to use another cooling water additive, the one being used shall be drained from the system before filling another product. If the cooling water system is dirty, it shall be flushed with good quality water or if needed use additional chemicals to remove possible deposits, like grease, oil, rust, etc. Though many cooling water additives are chemically compatible with each other, these can contain e.g. polymers which can loosen existing deposits from the cooling water system. When the loose deposits become suspended in the cooling water, they can attach to engine component surfaces, e.g. cylinder head and will then cause detrimental effects in terms of heat transfer decline, clogging of small diameter water channels and deposit formation leading to local overheating and corrosion. VALIDATED COOLING WATER TREATMENT SYSTEMS WÄRTSILÄ WATER CONDITIONER UNIT As an alternative to the validated cooling water additives, the Wärtsilä Water Conditioner Unit (WWCU) can also be used to treat cooling water of engines’ closed water circuits. WWCU is based on the Enwamatic EMM cooling water treatment system, but includes a number of new features based on Wärtsilä design. The WWCU protects the engine from corrosion without any chemicals. It acts as a side stream filtration and water treatment unit and includes the following functions: corrosion protection, scale control, filtration, control of bacterial growth and air separation.