DAILY CONTROL TESTS
Steam Ships (32-60 Bar MPSG) Control and Dosage Chart Standard Treatment with DREWPLEX® OX Corrosion Inhibitor Read MSDS before running these tests. Before testing, samples must be cooled to 25°C (77°F) by collecting through a sample cooler for safety and to prevent flashing which concentrates the sample. If the sample is colored or turbid, filter before testing. If the sample remains cloudy after the first filtering, the sample should be
refiltered through the same filter paper since the filter becomes more retentive on the second filtration.
DEHA
1. Fill the sample cup to the 25-ml mark with feedwater sample. (Fig. 1). 1 2 2. Add 2 drops of Activator Solution. Stir gently with tip of an ampoule from the DREWPLEX OX 25 corrosion inhibitor Ampoule Test Kit to mix the contents of the sample cup (Fig. 2). 3. Immediately snap the tip of the ampoule by pressing the ampoule against the side of the sample cup. The sample will fill the ampoule and begin to mix with the reagent, leaving a small bubble to facilitate the mixing (Fig. 3). 4. Remove the ampoule from the cup. Mix the contents of the ampoule by inverting it several MEANS OF ADJUSTMENT times, allowing the small bubble to travel from end to end each time (Fig. 4). • DREWPLEX® OX corrosion inhibitor 5. Wipe all liquid from the exterior of the ampoule and WAIT EXACTLY 10 MINUTES for full color development (Fig. 5). • Continuous Dosage 6. Place the DREWPLEX OX corrosion inhibitor ampoule, flat end downward into center tube of comparator. Direct the comparator toward a source of bright white light while viewing from bottom. Hold comparator in a nearly horizontal position and rotate it until the color standard below the DREWPLEX OX corrosion inhibitor ampoule shows the closest match (Fig. 6). 7. Record the result and adjust dosage as necessary.
DAILY TEST PROCEDURES 5
4
3
6
ml
4
20 15 5
PHOSPHATE – Filter sample before running test 1. Fill sample cup to the 25-ml mark with cooled, filtered boiler water (Fig. 1). 2. Place phosphate VACU-VIALS1 ampoule in sample cup. Snap tip by pressing ampoule against side of the cup. Ampoule will fill, leaving a small bubble to facilitate mixing (Fig. 2). 3. Mix the contents by inverting the ampoule, allowing the bubble to travel from end to end. Wipe all liquid from the exterior. WAIT 5 MINUTES (Fig. 3). 4. Press ON. When the display shows “---”, the photometer is ready (Fig. 4). 5. Zero photometer by inserting VACU-VIALS blank ampoule into cell compartment, aligning vertical line on ampoule with water droplet on photometer. Cover ampoule with light shield. Press ZERO button. Display will show “S1P” momentarily, then it will read “-0.0-” (Fig. 5). 6. After the 5 minute wait required in step 3, insert the phosphate VACU-VIALS ampoule with proper cell alignment into the cell compartment. Cover the ampoule with the light shield. Press the READ button. The meter will show “S1P” momentarily, then it will display the test result in ppm ortho phosphate as PO4. Record the result and adjust dosage as necessary.
PHENOLPHTHALEIN (“P”) ALKALINITY
TOTAL (“T”) ALKALINITY
2
1
3
4
5
ml
25
4
20
05 : 0 0
15 10 5
MEANS OF ADJUSTMENT
• ADJUNCT® B phosphate boiler water treatment
0 - 10 ppm 10 - 20 ppm 20 - 40 ppm 40+ ppm
— — — —
DOSAGE INFORMATION
30 grams per ton of water in the boiler system 15 grams per ton of water in the boiler system SATISFACTORY - NO CHANGE HIGH, BLOWDOWN REDUCE DOSAGE
INTIAL DOSAGE: 30 grams per ton of water in the boiler system
DAILY TEST PROCEDURES
1&2
3
MEANS OF ADJUSTMENT
• GCTM concentrated alkaline liquid
7. Add 3 drops Total Alkalinity Indicator-GP (Fig. 7). 8. Add sulfuric acid N/10 until pink color develops (Fig. 8 & 9). 9. Note the level of acid in buret. Convert ml to ppm using chart at right and record result in ppm as “Total Alkalinity”. Record the result & adjust dosage as necessary. ©2012 Drew Marine • ®Registered trademark, TMTrademark, Drew Marine • 1Registered trademark of CHEMetrics Inc.
DOSAGE INFORMATION
LESS THAN 0.2 PPM – INCREASE BY 25% 0.2 - 0.5 PPM – SATISFACTORY - NO CHANGE GREATER THAN 0.5 PPM – DECREASE BY 25% Initial dosage* is 100-300 ml/day. Increase dosage by 50-100ml/day until the DEHA control range is reached. Feed continuously with DREWPLEX AT boiler water treatment. (*When starting up a new system or one that has been down for some reason).
DAILY TEST PROCEDURES
P & T ALKALINITY
1. Collect 50-ml cooled boiler water sample (Fig. 1 & 2). 2. Pour into evaporating dish (Fig. 1 & 2). 3. Add 4 drops phenolphthalein (Fig. 3). 4. Pink color - Alkaline. No Color - “P” alkalinity zero. 5. Add sulfuric acid N/10 drop by drop until pink color disappears (Fig. 5 & 6). 6. Note level of acid in buret. Convert ml to ppm using chart at right and record result in ppm as “P” alkalinity. Keep sample for “T” alkalinity test. Record result & adjust dosage as necessary.
10 : 0 0
ml
25 20 15 10 5
10
– 1 –
5&6
7
8&9
DOSAGE INFORMATION
ML SULFURIC ACID N/10 PPM 0 - 0.2 0 - 20 0.3 - 0.5 30 - 50 0.6 - 0.8 60 - 80 0.9 - 1.3 90 - 130 1.3+ 130+ TOTAL ALKALINITY TEST RESULT MUST BE LESS THAN TWICE THE “P” ALKALINITY.
DOSAGE ADJUSTMENT 0.15 liter per ton of water in the boiler system 0.10 liter per ton of water in the boiler system 0.05 liter per ton of water in the boiler system SATISFACTORY BLOWDOWN — REDUCE DOSAGE IF NOT, DOSE 1 LITER OF GC REGARDLESS OF THE “P” ALKALINITY. TEST AGAIN IN 2 HRS.
SS_BWT_STD_OX_CS
DAILY TEST PROCEDURES
CHLORIDE TEST
1. 2. 3. 4. 5. 6. 7.
Measure 10-ml cooled boiler water sample into plastic vial (Fig. 1). Add 3 drops phenolphthalein (Fig. 2). Add N/10 Sulfuric Acid dropwise until pink color disappears. Add 1 more drop (Fig. 3). Add 6 drops Potassium Chromate. Sample will be yellow. Add N/10 Silver Nitrate dropwise until the sample turns orange. Drops N/10 Silver Nitrate X 10 = ppm chloride. Record the result and refer to chart at right for blowdown adjustment (Fig. 4).
1
2
3
Collect 50-ml cooled condensate sample and pour into evaporating dish (Fig. 1). Add 3 drops phenolphthalein. Sample should turn pink (Fig. 2). Add sulfuric acid N/10 drop by drop until pink color disappears (Fig. 3). Record the result and adjust dosage as necessary (Fig. 4).
Silver Nitrate Drops N/10
1
2
3
4
5
6
7
8
9
10
PPM Chloride
10
20
30
40
50
60
70
80
90
100
2
3
MEANS OF ADJUSTMENT • BLOWDOWN
DOSAGE INFORMATION Up to 700 µS/cm - Satisfactory Above 700 µS/cm NORMAL MAINTENANCE BLOWDOWN INCREASE BLOWDOWN FREQUENCY Blowdown should be carried out as per boiler manufacturer’s instructions. Blowdown is necessary to reduce dissolved and suspended solids. If suspended solids are noticed in boiler water samples, blowdown regardless of conductivity test results. Increase flash bottom blowdown for the first 4-6 months after treatment startup to remove any transported oxides coming back from the steam system.
DAILY TEST PROCEDURES 1
2
3
MEANS OF ADJUSTMENT • SLCC-ATM condensate corrosion inhibitor • Continuous Dosage
LIQUID COAGULANTTM Boiler Sludge Conditioner - No Test Required (For Oil Contamination Only) Daily dosage 28-ml (1.0 oz.) per day for each ton of water capacity to condition suspended solids (oil and sludge) for removal by bottom blowdown. Flash bottom blow and scum blow several times at 20 minute intervals after dosing the LIQUID COAGULANT Water Treatment Test Cabinet: PCN 1AA0016 (220 Volt) or 1AA2148 (110 Volt)
DEHA:
DREWPLEX OX corrosion inhibitor AmpouleTest Kit: PCN 0387-01-0 includes: Sample Cup, Comparator, 30 Ampoules, 1 x 10 ml Activator Solution. The Activator Solution is also supplied separately under PCN 0387036 (6 x 7 ml). Ampoules are also supplied separately under PCN 0387-02-8
Alkalinity/Chloride: Alkalinity/Chloride Reagent Set: PCN 0301-02-8 includes: 1 bottle Phenolphthalein, 1 bottle Total Alkalinity Indicator GP, 2 bottles Sulfuric Acid N/10, 2 Chloride LMP Test Kits Alkalinity/Glassware Set PCN 0201-02-0 includes: LP Titration Assembly, Evaporating Dish (140ml), Graduated Cylinder (50ml, plastic), 30ml Dropper Bottle for Total Alkalinity indicator GP, 30ml Dropper Bottle for Phenolphthalein, 3 Plastic Stirring Rods (150mm)
4
DOSAGE INFORMATION NO PINK WITH PHENOLPHTHALEIN – INCREASE BY 25% PINK COLOR – 1-2 DROPS N/10 ACID TO CLARIFY– SATISFACTORY NO CHANGE PINK COLOR – 3 OR MORE – DROPS N/10 ACID TO CLARIFY– DECREASE BY 25% INITIAL DOSAGE: 0.15 liter per ton of WATER IN THE boiler system
boiler sludge conditioner. Dose for two weeks or until oil removal is complete. If severe contamination persists, the possibility of continuing oil leakage should be investigated and eliminated.
APPARATUS
Storage:
©2012 Drew Marine • ®Registered trademark, TMTrademark, Drew Marine • 1Registered trademark of CHEMetrics Inc.
BLOWDOWN
DAILY TEST PROCEDURES
CONDENSATE pH TEST - Test immediately after drawing sample. 1. 2. 3. 4.
SATISFACTORY NO BLOWDOWN
MEANS OF ADJUSTMENT
NEUTRALIZED CONDUCTIVITY
the meter. 2. Add 2 drops of phenolphthalein indicator to the cooled boiler water sample and stir. If the sample turns pink, add Gallic Acid while stirring until the pink color disappears. This neutralizes the sample (Fig. 2). 3. Place electrode into sample and take care to ensure that the liquid level is above its upper steel band. Stir the electrode gently in the sample to create a homogenous sample (Fig. 3). 4. Allow time for the reading to stabilize. Note the reading on the display. 5. Record the result and refer to chart at right for blowdown adjustment.
4
10 mil
• BLOWDOWN
1. Connect the Conductivity Electrode-ATC to the meter. Press the power button to power up
N/10 Sulfuric Acid
Conductivity:
Conductivity Meter Kit Complete: PCN 0173062 includes Meter and Electrode, Case, Stand, Rubber Armor, Gallic Acid, Brass Spoon, Plastic Beaker, 2 x 4 AAA Batteries and Manual Standards are supplied separately under PCN 6968-03-8 (84µs) and PCN 6968-02-0 (1413 µs)
Phosphate:
Phosphate Vacu-Vials1 Test Kit: 1AA5850
Filter Paper:
PCN 0225-01-2, Box of 100
Funnel:
PCN 0221-01-0
– 2 –
SS_BWT_STD_OX_CS
