EMCS NOXX MARELCO Quick start guide

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EMCS INDUSTRIES LTD.
Unit 5 - 10114 McDonald Park Rd.
North Saanich, BC V8L 5X8
1
EXPERIENCE THE FREEDOM OF NO FOULING
Anti-fouling System Installation
& Operational Manual
Vessel Name/ Company
EMCS INDRUSTRIES LTD. Reference Number
Vessel Superintendent/ Project Manager
Revision
Date
Description
Signature
1 MARELCO ANODES & CONTROL PANEL
EMCS MAJOR ACCOUNTS MANAGER: GABRIELLE ALONSO
T: 250.656.5366 ext 200 |C: 250.661.5383. |F: 250.656.5344 | E: [e-mail]
Commercial: www.emcsindustries.com | Recreational: www.thenoxx.com

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EMCS INDUSTRIES LTD.
Unit 5 - 10114 McDonald Park Rd.
North Saanich, BC V8L 5X8
2
Table of Contents
SECTION A. MARELCO™
1. INTRODUCTION 4
2. GENERAL DESCRIPTION 4
(i) Marine Growth Protection 4
(ii) Corrosion Protection 5
3. MARINE INSTALLATIONS 6
(Sea Chests, Main Treatment Tank, Auxiliary Treatment Tank
SECTION B. SYSTEM DESCRIPTION
1. CONTROL PANEL 9
(i) Panel Exterior 9
(ii) Panel Interior 11
Meter Card 12
Anode Card 13
Meter Card - Open Circuit Fault Level Mode High 14
Meter Card - Short Circuit Fault Level Mode Low 16
2. SAFETY CAPS 18
3. ANODES 18
(i) MG Anodes 18
(ii) TC Anodes 18
4. CABLE 19
5. POWER 19
6. MARINE INSTALLATION REQUIREMENTS 20
(i) Sea Chests 20
SECTION C. INSTALLATION
1. CONTROL PANEL 21
2. CABLE 21
3. SAFETY CAPS AND ANODES 22
4. POWER 23
5. SYSTEM CALIBRATION 23
SECTION D. ANODE REPLACEMENT
1. ANODE REPLACEMENT PROCEDURE 19
SECTION E. OPERATING VARIABLES
1. FRESH WATER 25
2. ICE 25
3. IN PORT - SEA WATER 25
4. PARTIAL ANODE OPERATION 25
SECTION G. DRAWINGS

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EMCS INDUSTRIES LTD.
Unit 5 - 10114 McDonald Park Rd.
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GENERAL DESCRIPTION
SECTION A.
(1) INTRODUCTION
Marine growth fouling of sea water cooling systems has posed a problem to ship owners, offshore
operators, and industry for many years. Tremendous costs are incurred due to partially blocked cooling
systems; equipment damage caused by system failures; increased demand on equipment, and higher fuel
consumption due to reduced cooling water reaching condensers. MARELCO™ aids in reducing these costs
and problems.
Since its first installation, MARELCO™ has proven that shore based industry, and ships of all types, will
reap immediate and lasting benefits.
For owners, a substantial reduction in operating, maintenance, and replacement costs will be realized
with MARELCO™ protection. Cost savings and benefits include:
(a) reduced fuel consumption;
(b) increased plant and equipment efficiency;
(c) reduced costs for cleaning sea chests, gratings, heat exchangers, condensers, pipes, valves, etc.
(d) increased life span of piping;
(e) less back up of equipment inventory;
(f) abolition of chemical costs, and;
(g) increased sea time - routine dry dockings only.
(2) GENERAL DESCRIPTION
MARELCO™ is a patented impressed current system employing specially alloyed anodes. MARELCO™
eliminates marine growth infestation and reduces corrosion in saltwater cooling systems. MARELCO™
provides continuous protection, demands negligible maintenance, and is easily applied to new or existing
installations.
(i) Marine Growth Protection
Marine growth fouling occurs where sedentary organisms ranging from fungi and bacteria to simple plants
and animals settle on surfaces immersed in sea water, thus affecting the operation and maintenance of
equipment. These organisms can greatly alter corrosion process and plug condensers, piping, and valves.
Fouling causes important increases in frictional resistance, fuel consumption, loss of production and
increased cleaning costs.

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Many methods have been tried, but always with associated problems. Historically, chlorination has
been used as the major chemical control of bio-fouling. Government regulations have placed increasingly
severe limitations on chlorine concentrations and duration, to the extent that intermittent chlorination at
the dosages permitted is not always an effective deterrent to the settlement and growth of marine
organisms. Chemical methods produce severe corrosion problems and can cost more to operate. Methods
must be capable of controlling primary fouling organisms, have low solubility, reduce pitting, be
compatible with existing equipment, and present no environmental hazards.
MARELCO™ meets these requirements by slowly dissolving special alloyed anodes into electrolytic
products (less than 10 mg/litre) which creates a environment hostile to primary forms of marine fouling
while at the same time reducing corrosion.
Impressed direct constant current is applied to the anodes, generating aluminum hydroxide from the
trap corrosion anode and copper ions into solution from the marine growth anode. Aluminum hydroxide
suspends the released copper, and being highly gelatinous spreads out into the slower moving areas of
the sea chests, where marine growth larvae are most likely to settle. Treatment is concentrated at the
inlet areas before water enters the various services. Sea water moving past the anodes acts as the mixing
agent, and the motive force to carry the suspension throughout the system.
Not only does the trap corrosion anode produce the colloidal suspension, it also actuates a corrosion
cell that protects the cathode from adverse reaction to copper. This dual system guarantees the
elimination of marine growth, reduction of corrosion, elimination of pitting, and is environmentally safe.
(ii) Corrosion Protection
Total corrosion prevention is rarely achieved, although it can be in specific instances. The concept of
corrosion control includes a broad spectrum of techniques ranging from acceptance of a finite life to some
quantitative diminution of the rate of attack, for example, in inhibited cooling watersystems.
MARELCO™ inhibits corrosion in water cooling systems by an electrochemical and barrier film
technique. The system produces a tiny, corrosion resistant and sacrificial film between the metal and its
environment. The trap corrosion anode creates ionic products which form a gelatinous alkaline coating
on the pipe surface or structure (the cathode) inhibiting corrosion up to 85% in a complete corrosion
protection system with the installation of treatment tanks. In practice, the pipe looks as if its internal
surface is coated.