SHIP Chandler

The tablet is dosed to the water supply tank preferably suspended away from the fabric of the tank. The tablets should not be allowed to rest on the bottom of metal tanks. Being in tablet form this is a safer method of administering chlorine than the usual liquid preparations. When used as part of a planned programme of protection it will assist in control of problems associated with such areas as bacterial and organic foulingincluding legionnaires disease.

Dose Rate:

Rates will be determined by the extent of current problems. An initial dose will be required to give a free residual chlorine reserve of 5-50ppm for a minimum of 1 hour. Thereafter a reserve of 0.5-2.0ppm is normally sufficient. Also available as rapid dissolving (Bechlor 126RD) 1 tablet will give 50ppm chlorine in 3.6m3 water.

The product should preferably be dosed continuously with a Rxsol Boiler Water Treatment Dosing Unit. Alternatively the product can be fed into the feed line by means of a by-pass pot feeder.

Dosage and control

Minimum dosage is 1.2 liters of Autotreat/ton of boiler capacity to reach a P-Alkalinity level of 100 ppm. For an untreated system it is recommended to initially bring the treatment up to a suitable level of 200 ppm p-Alkalinity. The dosage chart given below is for convenience to determine the amount of product required to elevate P-Alkalinity. Note that the table is based on reaching 200 ppm. P-Alkalinity.

Sampling and testing

A representative sample of boiler water should be drawn for analysis daily. The sample should always be taken from the same point after blow down, cooled and tested immediately. Follow the Spectrapak Test Kit instructions and log the results. It is important that regular testing is carried out to ensure that treatment levels are correct.

Wall Wash Kit full set provide complete set of reagent instrument which is required during after and before Tank Cleaning.

Dirt attached on air-side fins of air coolers are a mix of carbonaceous particles such as soot and oil mist of unburned fuel components. 
Carbonaceous particles can be removed by Alkaline Cleaners Part No. RXSOL-16-1040-025 ( www.rxmarine.com/alkaline-air-cooler-cleaner ) and oil mist can be removed by oil based cleaners. However, it is very difficult to remove the mix of these substances. If you use an alkaline cleaner, oil will repel the water based alkaline cleaner; if you use oil based cleaner, carbonaceous particles will get in the way and stop oil from being removed.

This cleaners designed to remove both carbonaceous and oil simultaneously. An effective cleaning method is to immerse one side to remove the loose stains first, and then immerse the other side. This method can efficiently remove dirt and prevent swollen dirt peeled from fins from blocking the spaces between fins.

Dirt in tubes of seawater side

White scales attached on the seawater side of air coolers of many vessels. We found that in most cases, the main component of the scales is calcium carbonate and there is also a small amount of calcium sulfate. Therefore in most cases, if you dissolve the calcium carbonate the scales will be removed.

However, if the amount of scales is large enough to block the tube, the cylindrical scale will usually have calcium carbonate on the outside (the side that is in contact with tube) and calcium sulfate in the center (part that seawater passes through). Calcium sulfate is easier to be formed when the temperature goes higher.

When the amount of scales increases, the contact area of scale and cleaner is very small and a longer time of dissolution is required. Calcium sulfate cannot be dissolved by an acid cleaner.