Corrosion inhibitor examples

This type of corrosion inhibitor acts by forming a protective oxide film on the surface of the metal. What are reversible inhibitors? It causes a large anodic shift that forces the metallic surface into the passivation region, which reduces the corrosion potential of the material. Some examples are chromates , nitrates , molybdates , and tungstate.

Examples for Cathodic Inhibitors include sulfite and bisulfite ions which can react with oxygen to form sulphates.

Another example of a cathodic inhibitor is a catalyzed redox reaction by nickel. These types of corrosion inhibitors form a thin preventive oxide layer on the surface of the metal. Types of corrosion inhibitors: Anodic inhibitors react with oxygen to form a thin film on the surface of the metal. They reduce the corrosion potential of the material by oxidizing a surface layer that is less reactive to corrosive elements.

Cathodic inhibitors slow the cathodic reaction itself or limit the diffusion of reductive elements such as hydrogen or oxygen to the metal surface. Examples are cathodic poisons such as arsenic and selenium ions which slow the reaction or oxygen. In this example, hydrazine converts oxygen , a common corrosive agent, to water, which is generally benign.

Questionnaire sample doc

What Is a Questionnaire ? A questionnaire is a set of questions written to acquire qualitative or quantitative data from specific respondents. The question made are given choices of , one being the best answer among the rest or only one answer considered as true. If you are seeking for a business questionnaire sample , then this document is the best professional sample questionnaire available for you. Do analyze this sample business document and get the idea of drafting a custom questionnaire.

You may also see leadership self assessment.

A questionnaire template enables an organization or department to know the satisfaction levels of a product or service from the customers. They provide reliable information and avoid speculative data. Choosing Your Template By The Questions Your Survey Asks.

If you’re getting ready to design a questionnaire , you will want to know some of the basics about survey design. The type of questions you will be asking your participants will decide the design of your survey and questionnaires , in part. To escape from the hassles of making your questionnaire , you can just refer to and download our high-quality templates.

Pressure regulator how it works

A pressure regulator limits excess inlet water pressure to a constant outlet pressure. They accomplish this by automatically modulating their area of opening and keeping outlet pressure within acceptable limits. A water pressure regulator is a plumbing valve that reduces the water pressure coming from the main water line into the house.

This valve brings down the pressure to a safe level before the water reaches any plumbing fixtures inside the home. A key component of the instrument air supply system is an air pressure regulator. The air pressure regulator is a simple device. Dome Loaded: The Equilibar is a dome-loaded pressure regulator with pilot operation.

This means that gas or air is fed into the top (dome) area of the regulator to provide the pressure setpoint for the process. The pressure of the gas in the dome is set by a secondary standard regulator called a pilot regulator. This return line is located downstream of all the injectors. What is a Fuel Pressure Regulator and how does it work ? A fuel pressure regulator is used to maintain steady fuel supply, even during dramatic changes in fuel demand.

The fuel injector has two sides, one side of the injector is under pressure from the the fuel rail and the other side is air boosted by a turbo or a compressor. Regulators are used for gases and liquids, and can be an integral device with an output pressure setting, a restrictor and a sensor all in the one body, or consist of a separate pressure sensor, controller and flow valve.

Laser alignment procedure

Definition: Nominal Hazard Zone (NHZ) – The area where the laser radiation can cause damage to the eye or body, i. LASER ALIGNMENT GUIDELINES In the research setting, over of all laser accidents occur during the alignment process, therefore alignment procedures are very important and should be strictly adhered to. The following is a guide for developing specific alignment procedures for a Class 3B or Class laser system. Laser alignment is an essential component of a viable maintenance.

Steps to a Proper Machinery Alignment.

Laser Shaft Alignment Shaft alignment , often called “coupling alignment” , is a process to make two or more rotating shafts co-linear, or in the same straight line, both vertically and horizontally. Set up laser alignment system. Measure, diagnose, and correct Soft Foot with the assistance of the laser system and feeler gauges.

Measure and correct alignment of the machine to achieve the final alignment to the required targets within tolerances. Print the report to document the alignment. Laser pulley alignment systems are now well established in the sheave alignment field , and have proven themselves in greatly reducing downtime and the manpower needed to do the alignment , while simultaneously achieving far greater accuracy.

Grp pipes specification pdf

GRP Pipe Specification – Drinking Water FW. This specification defines the minimum technical requirements for the design, fabrication and testing of glass fibre reinforced plastic ( GRP ) pipe and fittings intended to be used for water supply (drinking or raw) with or without pressure. Vacuum piping , duct and O-ring gasketed joint piping will normally be wound at greater winding angles, such as 65°, to increase the hoop strength. GRP pipe is approved supply to industries worldwide, including drinking water supply, industry water supply, wastewater supply, sea water supply, electrical processing, chemical processing, agriculture processing and other type of supply as per customer requirement. Each layer of the pipe wall has a specific function.

EBS, GRP pipes eliminates need for expensive pipe handling equipment.

COUPLING Sleeve couplings combined with gaskets. Both glass-fiber-reinforced thermosetting-resin pipe (RTRP) and glass-fiber-reinforced polymer mortar pipe (RPMP) are fiberglass pipes. This standard is suited primarily for pipes to be installed in buried applications, although it may be used to the extent applicable for other installations such as, but not limited to, jacking, tunnel lining and slip-lining and rehabilitation of existing pipelines.

Electromagnetic force

The electromagnetic force is one of the four known fundamental forces. The other fundamental forces are: The other fundamental forces are: the weak nuclear force , which binds to all known particles in the Standard Model , and causes certain forms of radioactive decay. The EMF holds electrons in their orbit around the nucleus.

What does electromagnetic mean? These electrons interact with other electrons to form electron bonds among elements and produce molecules an eventually, visible matter.

The force arising from the attractions and repulsions associated with electric and magnetic fields. Understanding how it works gives you an appreciation of everything from the electricity powering your screen to the light transmitting these words to your eyes. Along with gravity, it is the force that humans encounter most on an everyday basis, and it explains most of the phenomena with which people are familiar.

It has the ability to attract and repel charges. Since material in solid and liquid forms are made of charges having a unique order, they, too, may be manipulated by this force. In fact, the forces of electric attraction and repulsion of electric charges are so dominant over the other three fundamental forces that they can be considered to be negligible as determiners of atomic and molecular structure.

Explosive remnants of war

Explosive remnants of war Every year, large numbers of civilians are killed and injured by explosive remnants of war – unexploded shells , grenades, bombs, etc. Convention on Certain Conventional Weapons is a major advance in efforts to end the suffering caused by unexploded and abandoned munitions. Under the international legal definition, ERW consist of unexploded ordnance (UXO) and abandoned explosive ordnance (AXO), but not mines.

It is the fifth Protocol to the Convention on Prohibitions or Restrictions on the Use. While the term has not been specifically define it is understood by the ICRC to correspond to the term unexploded ordnance (UXO) which has been defined in several contexts.

UXO refers to bombs, rockets, grenades, mortars and other types of explosive weapons which have failed to explode when fired or on impact. Often they are referred to as Unexploded Ordnance (UXO). Explosive Remnants of War (ERW) Definitions Introduction The term Explosive Remnants of War (ERW) has been widely used in the CCW Review Conference preparatory discussions. WLP helped fund the Mine Action Visitors Center in Dong Nai, Vietnam built and operated by Project Renew.

The Explosive Ordnance Disposal (EOD) team partook in a number of excercises, as part of the International Day of Mine Awareness, in order to draw attention to the large number of mines, unexploded ordnances (UXOs), and explosive remnants of war (ERWs) that still exist in the country.

Vacuum pump principle

Find the Newest Product. What is the operation of a vacuum pump? How much vacuum should pump pull? What type of oil to use in a vacuum pump? A vacuum pump is a device that removes gas molecules from a sealed volume in order to leave behind a partial vacuum.

Gas transfer pump is a way for continuous suction and discharge gas in order to achieve the purpose of vacuum pumping.

We will review the most common types of vacuum pumps , their principles of operation and where in the system they are used. The vacuum is created in the vacuum pump by using a liquid seal ,the most commonly used liquid sealant is water. The main differences include: The vacuum pump is not lubricated with oil, so there is no oil reservoir or mist eliminator. Graphite vanes operate in an oil-free environment.

Typical vane life is 10hours. A rotary vane vacuum pump is an oil-sealed rotary displacement pump. The pumping system consists of a housing (1), an eccentrically installed rotor (2), vanes (3) that move radially under centrifugal and resilient forces and the inlet and outlet (4). All pumps use basic forces of nature to move a liquid.

As the moving pump part (impeller, vane, piston diaphragm,etc.) begins to move, air is pushed out of the way.

Relief valve وظيفة

The Cash Acme NCLX-Temperature and Pressure relief The Cash Acme NCLX-Temperature and Pressure relief valve is designed for protection of Hot Water Heater and Storage tanks. The NCLX-incorporates an inert thermal element coating that provides effective isolation from mineral deposits (liming). A relief valve is designed to open at a specific pressure to help protect pumps and other equipment from exceeding stress limits. When pressure rises above the set limit, a safety valve can divert liquids, gases or a liquid-gas mixture to a flare header to help relieve pressure and normalize. A pressure control valve is shown as a single rectangle with a way.

Overpressure protection Industry leading pressure and safety relief valve designs with over 1years of technical and application expertise providing custom engineered solutions for OG, Refining, Chemical, Petrochemical, Process and Power applications. The majority of our check valves incorporate a low inertia poppet design with double-tapered o-ring seats to achieve a fast, positive seal in ultra low pressure applications. Additionally, most of our check valves can also be used as pressure relief valves as long as the o-ring side vents to atmosphere. Shop for Relief Valves at Ferguson.

Pressures range from PSI ( BAR) to 0PSI (41 BAR).

Design of water supply pipe networks pdf

The water systems are designed for a predecided time horizon generally called design period. For a static population, the system can be designed either for a design period equal to the life of the pipes sharing the maximum cost of the system or for the perpetual existence of the water supply system. The book covers the topics related to the analysis and design of water supply systems with application to sediment-transporting pipelines. It includes the pipe flow principles and their application in analysis of water supply systems.

Sharma is an Urban Water System Designer at CSIRO Australia, where he conducts research on design aspects of water , wastewater , and stormwater systems. As a civil engineer, he has twenty-five years of industry, research, and teaching experience in urban water systems and has had articles on urban water systems design published in international journals.

The triple point: The single combination of pressure and temperature at which liquid water , solid ice, and water vapour can coexist in a stable equilibrium occurs at exactly 273. K (°C) and a pressure of 6Pa. Hydrodynamics and Water Quality: Modeling Rivers , Lakes, and Estuaries (Hardcover $160) Original Price:$309.

Expansion joint in buildings

What are the different types of expansion joints? When to use an expansion joint? Do your building expansion joints need re-caulking? What is the common use of an expansion joint?

Applications of expansion joints in Buildings : 1. Mall visitors and customers should not be bothered by mundane structural details.

Hospitals, Laboratories, and Food Factories. In building construction , an expansion joint is a mid-structure separation designed to relieve stress on building materials caused by building movement induced by: thermal expansion and contraction caused by temperature changes, sway caused by wind. L allow = allowable length from Fig.

We are making sure you are winning this battle. The curbs should extend at least or if a cant is use above the adjacent roof. Expansions Joints in Buildings : Technical Report No. In general, the top surface of the curbs should be sloped away from the joint , to shed condensation and moisture onto the roof. An expansion joint or movement joint is an assembly designed to hold parts together while safely absorbing temperature-induced expansion and contraction of building materials, and vibration, or to allow movement due to ground settlement or seismic activity.

Fire fighting system design books

Find the top 1most popular items in Amazon Books Best Sellers. Fire Fighting System Design Pdf. Many type of fire fighting systems base on occupancy and application,in our fire fighting design course deal with almost common system ( water system ). Each one from the above three category take you from began to next level of system acknowledgment. ABOUT OUR AUTHORS Firefighter’s Handbook xix Certification Program ).

He also serves as a member of APCO Bulletin Editorial Advisory Board. NFPA’s own Tracy Vecchiarelli was Named One of the Top Under Emerging Professionals by SFPE. Corridor width in high rise building. Free webinar on Storage Protection under Sloped Ceilings.

With increased urbanization, and construction of complex infrastructures like advanced warehouses, factories, power distribution centers, refineries, multi-storied residential and commercial buildings, etc. A sprinkler is one component of many that make up a fire sprinkler system. Although effective fire sprinkler systems are crucial to public safety, for years, the designers of those systems had few published resources to reference and guide them through their design processes.

Osmosis معنى

Osmosis definition is - movement of a solvent (such as water) through a semipermeable membrane (as of a living cell) into a solution of higher solute concentration that tends to equalize the concentrations of solute on the two sides of the membrane. Osmosis , the spontaneous passage or diffusion of water or other solvents through a semipermeable membrane (one that blocks the passage of dissolved substances—i.e., solutes). Osmosis of water from an area of lower to an area of higher solute concentration across a semipermeable membrane.

Osmosis Meaning in Arabic: Searching meanings in Arabic can be beneficial for understanding the context in an efficient manner. You can get more than one meaning for one word in Arabic. Osmosis is an efficient, enjoyable, and social way to learn. for an account today!

Osmosis empowers over one million learners around the world with a better understanding of medicine and health topics. Learn more and forget less with fun, easy-to-digest videos and tools that help you study more strategically, at your own pace. Rediscover the magic of learning medicine with Osmosis. So the solute is dissolved in the solvent, and so we have a net migration of the water molecules from this solution that has a low solute concentration to one that has a higher solute concentration.

Dewatering system pdf

In gravels spacing required may be too close and impracticable. In clays it is also not used because it is too slow. A FREQUENTLY ENCOUNTERE D DEWATERING SYSTEM IS ONE WITH TWO LINES OF PARTIALL Y PENETRATING WELLPOINTS ALONG EACH SIDE OF A LONG EXCAVATION, WHERE THE FLO W CAN BE ASSUMED TO ORIGINATE FROM TWO EQUIDISTANT LINE SOURCES.

Two stage gypsum dewatering system , consisting of a primary stage of sets of hydro-cyclones and secondary stage of vacuum belt filters for dewatering of gypsum slurry from FGD plant up to less than moisture is envisaged. Gypsum slurry produced by FGD plant is collected in primary hydro cyclone feed tank. In most contracts, dewatering is the responsibility of the contractor. Construction dewatering can become a costly issue if overlooked during project planning. The contractor selects the dewatering method and is responsible for its design and operation.

DESIGN OF A DEWATERING and pressure relief or groundwater control system first requires determination of the type of groundwater flow (artesian, gravity, or combined) to be expected and of the type of system that will be required. This method therefore becomes economically competitive at depth in soils of low permeability. Dewatering involves controlling groundwater by pumping, to locally lower groundwater levels in the vicinity of the excavation.

Dewatering system design

The purpose of a dewatering system is to manage groundwater to enable excavation and construction to take place in safe conditions, without failure of the ground or failure of the structure being built. Design of an optimal dewatering system can be accomplished by coupling the techniques of operations research to a ground-water flow model. Operations research is a quantitative and systematic approach that mathematically formulates an optimization problem in terms of an objective function and a set of constraints.

Dewatering involves controlling groundwater by pumping, to locally lower groundwater levels in the vicinity of the excavation. Groundwater Engineering’s team has decades of experience in dewatering projects around the worl and we provide a complete design and installation service to control your groundwater problems.

Dewatering Systems Design Dewatering systems are used for a variety of applications in Florida. A couple of common uses are to support underground construction or to recover contaminated groundwater for environmental remediation. MATHEMATICAL AND MODEL ANALYSES. Design of a dewatering system requires the determination of the number, size, spacing, and penetration of wells or wellpoints and the rate at which water must be removed from the pervious strata to achieve the required groundwater lowering or pressure relief.

Pumps types

What are the three types of pumps? This type of pump is one of the most common in use today. Like other pump designs, it uses an impeller, which is a rotating blade to generate suction which then moves fluid through pipes. The rotating impeller creates what is known as centrifugal force, giving this pump design its name.

There are three basic types of pumps : positive displacement, centrifugal and axial-flow pumps. In centrifugal pumps the direction of flow of the fluid changes by ninety degrees as it flows over impeller, while in axial flow pumps the direction of flow is unchanged.

Types of Pumps Dynamic Pumps. It can be applied for transfer and for metering service. Such pumps are available in single- and multi cylinder models. There are main types of diaphragm pumps : Air-operated and Mechanical. This pump type has more material options than other types.

API Process Pumps : The API pump type applies to pumps built to the API 6standard for pumps for refineries, pipelines, and other hydrocarbon processing applications. Get Advice From Our Sump Pump Experts Today. Check Out Our How-To Library for Information.

Nominal diameter definition

What does the nominal diameter (dn) mean? What is the nominal size of brick? DN is of paramount importance in the process of pipeline laying, as this is what determines the size of pipe fittings such as bends, tees and elbows that are used for connecting pipes.

The nominal size may not match any dimension of the product, but within the domain of that product the nominal size may correspond to a large number of highly standardized dimensions and tolerances. Nominal sizes may be well-standardized across an industry, or may be proprietary to one manufacturer.

Nominal Size is the measurement used for naming a component, not necessarily the actual size of the component when milled or finished. The size of timber is generally given in the Nominal Size but the actual size is a bit smaller. Nominal means something that is not specifie and in terms of pipe sizes, it refers to the diameter of the pipe hole with a dimensionless number. It comprises the letters DN followed by a dimensionless whole number which is indirectly related to the physical size in millimetres of the bore (ID) or outside diameter (OD) of the end connections.

Small villa design plan

At Architectural Designs, we define small house plans as homes up to 5square feet in size. The most common home designs represented in this category include cottage house plans , vacation home plans and beach house plans. The garden design for this small villa is just the perfect match for any villa.

The use of boxwood hedge fits well with the lattice fencing, paver steps, bird bath central decor, and the elevated rose garden. Budget-friendly and easy to buil small house plans (home plans under 0square feet) have lots to offer when it comes to choosing a smart home design. Our small home plans feature outdoor living spaces, open floor plans , flexible spaces, large windows, and more.

Maybe you’re an empty nester, maybe you are downsizing, or maybe you just love to feel snug as a bug in your home. Whatever the case, we’ve got a bunch of small house plans that pack a lot of smartly-designed features, gorgeous and varied facades, and small cottage appeal. Apart from the innate adorability of things in miniature in general, these small house plans offer big living space. Small House Plans Offer Less Clutter and Expense – And with Good Design , Small Homes Provide Comfort and Style.

Throttling process

Why is the throttling process isenthalpic in nature? How is throttling a steady flow process? What is the meaning of throttling in computer? How to disable the CPU throttling? First, we understand what is meaning of throttling process 1.

When fluid or gas flow through the restricted passage like a plate with partially opened valve or suddenly reduce the diameter of the pipe pressure drop occur. Why, in the throttling expansion process, is. This procedure is called a throttling process or Joule–Thomson process.

To better understand the theory of the ideal throttling process lets compare what we can observe with the above theoretical assumptions. Throttling Process – Isenthalpic Process. A throttling process is a thermodynamic process, in which the enthalpy of the gas or medium remains constant (h = const). In fact, the throttling process is one of isenthalpic processes.

Sometimes, fluids flow through a restriction, such as an orifice, a valve, or a porous medium, and a pressure drop occurs adiabatically.

The BizTalk Server host throttling mechanism continually monitors for a throttling condition, calculates the severity of the throttling condition, and applies host throttling progressively depending on the calculated severity.

Naffco fire hose cabinet catalogue

NAFFCO is a leading manufacturer and supplier of cabinets for fire fighting equipment. All of our cabinets are built to accommodate and store fire hose reels, breeching inlets and other equipment. NAFFCO supplies fire hose reels and fire hose cabinets for customers across Dubai and the Middle East.

Our equipment will ensure that the inhabitants in your property are equipped to deal with a range of fires. All of our reels and cabinets have been tested and certified by the following: BSI, FM, LPCB, Global Mark and UL.

NAFFCO fire hose reel cabinets and Breeching Inlet Cabinets accommodate fire hose reel, fire fighting equipment and comply with BSEN 671-standards across Dubai, the MENA region the UAE and Qatar. Our hoses and accessories are fully certified by the NFPA and UL. Every fire hose we provide will enable your fire fighting team to stop fires quickly in your property or environment. An Introduction to NAFFCO firefighting technology and fire safety solutions, NAFFCO has worked in both the private and government sectors, as well as manufacturing plants, hospitals, stadiums, malls and other organizational projects, delivering comprehensive fire safety and engineering solutions.

Business structure

Simply put, it is any activity or enterprise entered into for profit. The term organizational structure refers to how the people in an organization are grouped and to whom they report. One traditional way of organizing people is by function. Some common functions within an organization include production, marketing, human resources, and accounting.

A business entity is an entity that is formed and administered as per corporate law in order to engage in business activities , charitable work, or other activities allowable.

Most often, business entities are formed to sell a product or a service. The LLC is a relatively new type of hybrid business structure that is now permissible in most states. It is designed to provide the limited liability features of a corporation and the tax efficiencies and operational flexibility of a partnership. Formation is more complex and formal than that of a general partnership.

Alternative business structures and licensed bodies. A business plan is a formal written document containing business goals , the methods on how these goals can be attaine and the time frame within which these goals need to be achieved. A business model describes the rationale of how an organization creates, delivers, and captures value, in economic, social, cultural or other contexts.

Water supply definition

What does water supply stand for? Civil Engineering) the supply of treated and purified water for a community. Most large water supply systems draw surface water through special intake pipes or tunnels and transport it to the area of use through canals, tunnels, or pipelines, which are known as mains or aqueducts.

Definition of water supply in the Definitions. Meaning of water supply. Information and translations of water supply in the most comprehensive dictionary definitions resource on the web. Irrigation is covered separately. Of all municipal services, provision of potable water is perhaps the most vital.

The town is without electricity and the water supply has been cut off. Search water supply and thousands of other words in English Cobuild dictionary from Reverso. While by far the largest body of water on Earth is the saltwater of the oceans, freshwater is required for most human activities.

However, most freshwater is locked up in glaciers and polar ice caps. In a restrictive sense, the term refers to water that is withdrawn for a specific purpose, such as for public supply, domestic use, irrigation, thermoelectric-power cooling, or industrial processing. In previous water-use circulars, water use for the domestic, commercial, industrial,.

Water Supply and Demand Introduction.

Marble tiles

Free Shipping On Orders Over $49. Browse by Room or Ask an Expert! Each palette of colors are offered in unique mosaic tile patterns that pair with three matching field tile sizes a baseboard and liner.

Find quality tile online or in store. Whether you combine similar or contrasting marble looks, this natural material has the “wow” factor that will impress your guests and completely transform your room.

In addition to the multitude of hues available, the differences in vein patterns and grain distinguish various types of marble from one another. Carrara marble tile with gorgeous white body and contrasting light gray veining. Calacatta creamy white marble tile is infused with deep gray veining and gold. Brilliant, beautiful, bespoke. Marble Backsplash Tiles.

As an added benefit, marble flooring can help keep a home cooler in the warmer months of the year. Real marble tiles have a beautiful, unique look like no other surface, with all their whirling patterns and shade variations, but it has high maintenance requirements. It must be sealed and cleaned regularly and only a mild detergent solution or a product specially designed for marble should be used for cleaning.

Network design software

What software is needed for a network? What is the best software to make network diagrams? Here are a few free apps that are effective and easy to use. At some point, every administrator will.

Easy network design software for network drawings with abundant examples and templates, Free Download. Network Diagram Network diagram is a schematic depicting the nodes and connections amongst nodes in a computer network or, more generally, any telecommunications network. Below you will find an Extensive list of the Top (some of which are FREE) Network Diagram Software packages available for download and trials.

Whether you’re demonstrating compliance or implementing network changes, use our network design software to create a central and single source of truth for your network. Lucidchart ensure teams always have access to the most up-to-date version of your network diagram—and its version history—to make informed decisions about your network. With wireless technology constantly changing, wireless network design is imperative.

The intuitive web-based network design tool, ezWiFi Planner, allows you to easily plan for your indoor and outdoor wireless deployments. Start designing your wireless projects using the license-free software by logging into the partner portal. One of the first things you should do before setting up a complex network is draw out a network diagram.

Fire sprinkler system design

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This standard also provides guidance for the installation of systems for exterior protection and specific hazards.

Where these systems are installe they are also designed for protection of a fire from a single ignition source. Building Models and BIM Technology Fire Suppression and Fire Sprinkler System Design. With one of the largest, multi-discipline, fire sprinkler design teams in the world—a team working with the most advance three-dimensional CAD technologies—we are able to completely immerse ourselves in your facility, even before it’s built.

Water supply control valves shall be electrically supervised for proper position. Water flow and supervision circuits shall be in accordance with the requirements of electrical specifications. Below is a diagram of the three sprinklers and three pipes which we will calculate.

BIM ( Building Information Modeling ) is an integrated process in our fire sprinkler system design, using a 3D model to better communicate design information. It allows for coordination between trades, improved accuracy, clear documentation, reduced waste and early decision making.

Multi effect distillation

It consists of multiple stages or effects. In each stage the feed water is heated by steam in tubes, usually by spraying saline water onto them. Some of the water evaporates, and this steam flows into the tubes of the next stage, heating and evaporating more water.

What is multiple effect distillation (med)? What are the most efficient methods of distillation?

Why is desalination so expensive? The multiple effect distillation process uses a steam heat source and a series of evaporators at successively lower pressures to create water. The reverse osmosis process uses membranes to separate the pure water from the brine.

This process requires pumping the salt water from…. Condensation is achieved by means of the thin-falling film technology. MECO multiple effect distillers are designed to produce Water for Injection (WFI) in accordance with all recognized international pharmacopoeias.

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The design is largely determined by the characteristic properties of the feed and the specific requirements of the final product. Each cell (also called effect ) contains a horizontal tube bundle.

Vrv system

Variable refrigerant flow ( VRF ), also known as variable refrigerant volume ( VRV ), is an HVAC technology invented by Daikin Industries, Ltd. Like ductless minisplits, VRFs use refrigerant as the cooling and heating medium. This refrigerant is conditioned by a single outdoor condensing unit, and is circulated within the building to multiple indoor units. Japanese multinational air conditioning manufacturing company headquartered in Osaka.

Daikin is the inventor of variable refrigerant volume systems and an innovator in the split system air conditioning market.

Daikin codeveloped a R-410A refrigerant with Carrier. As a technology leader in the HVAC industry, Daikin had registered the VRV term (which stands for Variable Refrigerant Volume ) as an official trademark. Unlike constant air volume (CAV) systems , which supply a constant airflow at a variable temperature, VAV systems vary the airflow at a constant temperature. The advantages of VAV systems over constant-volume systems include more precise temperature. New VRV systems offer high levels of energy efficiency, as well as flexibility.

They operate quietly and provide the user full control of the environmental temperatures.

Morocco

Fabulous Daily Deals-Only Hrs. Morocco claims the non-self-governing territory of Western Sahara, formerly Spanish Sahara, as its Southern Provinces. Morocco TourisTripAdvisor has 947reviews of Morocco Hotels, Attractions, and Restaurants making it your best Morocco resource. It is the only African country with coastal exposure to both the Atlantic Ocean and the Mediterranean Sea. He was years ol spoke Arabic and French, and was leaving behind his parents, siblings and.

Explore Morocco holidays and discover the best time and places to visit.

Morocco is a gateway to Africa and a country of dizzying diversity. It has borders with Algeria to the east and the Spanish North African territories of Ceuta and Melilla on the Mediterranean coast in the north. Morocco has been the home of the Berbers since the second millennium B. Morocco was annexed by Rome as part of the province of Mauritania until the Vandals overran this portion of the declining empire in the 5th century. The Arabs invaded circa 68 bringing Islam. The Atlantic Ocean and the Mediterranean Sea meet at Tangier, Morocco.

Exercise increased caution in Morocco due to terrorism. Terrorist groups continue plotting possible attacks in Morocco.

Solenoid valve شرح

A solenoid valve is an electromechanically operated valve. Please visit us and we will help you choose the. The valve features a solenoid , which is an electric coil with a movable ferromagnetic core in its centre.

This core is called the plunger. In rest position, the plunger closes off a small orifice. An electric current through the coil creates a magnetic field.

A 3-way solenoid valve has three pipe connections and orifices, one of which is always open, allowing for two paths of flow. The 2-position operation makes these solenoid valves useful for applying or cutting off flow or pressure in a tool or equipment component, such as a hydraulic cylinder. Our online ordering process of products and spare parts is quite simple: you find our current eShops on the Bürkert world. A normally closed valve will stay closed until an electric current is applie which then opens the valve. A two way solenoid valve has three ports: one common, one normally open, and a third which is normally closed.

Solenoid valve approvals. The most common solenoid valve is the two-way valve. A two-way valve only has two ports, whereas more advanced designs may have three or more, depending on what it will be used for.

Main distribution board design

An MDB is a panel or enclosure that houses the fuses, circuit breakers and ground leakage protection units. However, powering all loads from the same distribution board is impractical in larger installations, since the amount of wiring required would be excessive. Main Distribution Board MDB. With the help of this software now you can design any type of phase industrial power and electrical control panels - be it a power control centre (PCC), a motor control centre (MCC), an electrical power distribution centre, electrical distribution board or an instrumentation panel.

Design cubical power panels, desk type control and instrumentation panels, floor type control and instrumentation panels.

Normally, a main switch, and in recent boards, one or more residual-current devices or residual current breakers with overcurrent protection, are also incorporated. In the United Kingdom, a distribution board designed for domestic installations is known as a consumer unit. It typically has a single or multiple incoming power sources and includes circuit breakers and protection devices. MDB then feeds SMDBs, which is installed generally at the po.

Eaton’s Pow-R-Line Distribution Panelboards provide the capability to house more breakers in less space than others in the industry, up to practical physical limitations such as standard box heights and widths.

مواسير grp بمصر

Grp أنابيب السعر هي الأكثر شيوعًا في North America، وSoutheast Asia. GRP ذات الألواح المقسمة منشاة من ألواح مصنوعة من تجميع صفائح الصب SMC ( Sheet Molding Compound ) ، باستخدام هيدروليكية الضغط الساخن تحت درجات حرارة عالية تصل الى (150C) وظروف ضغط للحفاظ على قوة تحمل عالية. GRP pipe is approved supply to industries worldwide, including drinking water supply, industry water supply, wastewater supply, sea water supply, electrical processing, chemical processing, agriculture processing and other type of supply as per customer requirement. EBS, GRP pipes eliminates need for expensive pipe handling equipment. GRP pipes are manufactured between 6m-12m, may be manufactured between 5m -16m according to the project needs.

Marketing manager golden metal group Eng. Hobas is part of the Amiblu Group and is the specialist in drinking water, irrigation, storm- and wastewater, hydropower and industrial GRP pipe systems. Submersible Pump طلمبات اعماق.

The Harop Curl or Natural Hamstrings Curl is another brutal bodyweight leg exercise, concentrating on the back of the leg, and especialy the hamstrings muscle group. We offer wall and slab formwork, climbing systems, working and facade scaffolds and formwork for tunnel and bridges. Middle East and North Africa, connecting job seekers with employers looking to hire.

Desalination technologies

Does the world need desalination? How much does a water desalination plant cost? Is desalination the sustainable solution? Desalination is a process that takes away mineral components from saline water. More generally, desalination refers to the removal of salts and minerals from a target substance, as in soil desalination , which is an issue for agriculture.

On a Mediterranean beach miles south of Tel Aviv, Israel, a vast new industrial facility hums around the clock. It is the world’s largest modern seawater desalination plant, providing percent of the water consumed by the country’s households. The desalination plant uses the latest reverse osmosis technology to turn the seawater into drinking water, along a new innovation of energy recovery to drive the pressurizing seawater pumps. The most common desalination methods are thermal distillation and reverse osmosis.

In thermal distillation , water is heated until the pure vapor separates from the salt and other components. In reverse osmosis, high amounts of pressure push water through a filter to separate it from salt. This is accomplished through using membranes (reverse osmosis and nanofiltration) and thermal processes (multi effect distillation, evaporation and crystallisation). In their study, the researchers are focusing on new materials that could make desalination.

Gas welding report

GAS WELDING INTRODUCTION: As we know gas welding use flame as source of heat. The flame is produced from mixed of oxygen gas and fuel gas the flame melts the edges or surfaces of joining metal. If you continue browsing the site, you agree to the use of cookies on this website. Introduction to Welding : The welding is a process of joining two or more, similar or dissimilar metals by heating them to a suitable temperature, with or without the application of pressure, filler material and flux.

Oxyfuel gas welding or commonly know as gas welding use flame as source of heat. Seminar On Gas Welding – Seminar report pdf Download.

WELDING Welding is a materials joining process which produces coalescence of materials by heating them to suitable temperatures with or without the application of pressure or by the application of pressure alone, and with or without the use of filler material. Dan Chang (UC Davis) to investigate and improve upon existing welding emission estimates. This page is a summary of the 33-page published report from this research project.

Cdc infection control guidelines 2014

Linking to a non-federal website does not constitute an endorsement by CDC or any of its employees of the sponsors or the information and products presented on the website. Department of Health and Human Services. Develop and monitor performance measures for occupational infection prevention and control services that include the proportion of healthcare personnel with documented evidence of immunity and the proportion of healthcare personnel vaccinate as appropriate, for each vaccine-preventable disease recommended for healthcare personnel by the Advisory Committee on Immunization Practices (ACIP). This compendium was developed to allow public health.

Her research interests are anthrax medical countermeasures and risk factors for susceptibility to anthrax. Screening for Susceptibility to Hepatitis B or Rubella.

The decision to screen potential vaccine recipients for susceptibility to hepatitis B virus (HBV) is an economic one, because vaccinating HBV carriers or persons already immune does not appear to present a hazard. The guidelines were created by an interdisciplinary team using a systematic process to review and grade evidence for each recommendation. Infect Control Hosp Epidemiol.

The overall process was led by Julie Storr (WHO HQ) and Amy Kolkwaite ( CDC Atlanta) under the direction of the national IPC lead for Sierra Leone.

How does pollution affect our life

How does pollution affect life? One way that pollution affects our lives in that it in an increase of free radicals in our bodies. Free radicals help to speed up the aging process and increase the risk of certain cancers. If you exercise outdoors, you are even more at risk.

At peak times of day the air we breathe in can be quite unhealthful. This might help you understand recycling more.

We recycle because of these reasons: 1. Saves Natural Resources - By making products from recycled materials instead of virgin materials, we conserve land and reduce the need to drill for oil. Air pollution affects our agriculture production by :- 1. H of the soil could cause roots and stem damage to plants. Low production and it would react with fertilizers cause more extensive damage. The leaves become clog causing. These contaminants can have dire effects on entire ecosystems, making life more difficult for humans, plants and animals.

Children and the elderly are particularly susceptible to the health effects from these toxins. Water pollution affects marine life which is one of our food sources.

Electrical engineering courses list

What are the best universities for Electrical Engineers? What courses are needed for electrical engineering? They improve the stability and security of computers and communications networks, and they increase the efficiency of solar panels. Students are rigorously trained in fundamentals of engineering , with a strong bent towards the maker culture of learning and doing.

In the contemporary era, engineering is generally considered to consist of the major primary branches of chemical engineering , civil engineering , electrical engineering , and mechanical engineering.

There are numerous other engineering subdisciplines and interdisciplinary subjects that may or may not be part of these major engineering branches. Electrical engineering courses teach the use of electronics to create, convey, and manipulate information. Clemson offers all lecture courses online and encourages students to complete laboratory classes at universities and technical colleges. Some courses focus on helping students find practical applications for electrical engineering concepts, such as medical instrumentation, patents, or systems design. Most online electrical engineering programs include at least some courses that require students to visit campus for hands-on lab work.

Safety talk at work

Safety talks are a short safety message for the members of a work crew prior to work beginning. These talks can be as short as a few minutes or longer than minutes. The talks can cover a range of topics or just a single focal point. They claim to have “everything you’d love to know”. One of the many subjects that they cover is workplace safety.

Free safety talks , free workplace safety posters, a blog for safety professionals, and more! There are currently over 2safety talk ideas for your next toolbox talk or tailgate meeting. Each talk is perfect for a five minute safety meeting prior to starting the work day.

Weekly updates so check back often! Example: David works to the point of exhaustion. Theresa is tied to the computer, allowing little room for flexibility, self-initiative, or rest. The Safety Library members area has numerous Safety Talk Topics Sheets ready for use for employee safety training to assist you in OSHA Compliance.

These safety talks and safety training topics help you keep interest high during safety training session and are also great for newsletter and other safety awareness material. Unsafe behaviors lead to incidents occurring on the job resulting in injury or property damage. A negative attitude towards safety specifically will eventually result in unsafe behaviors.

Cfps course

Since then, CFPS has been awarded to more than 0people who have demonstrated a level of professionalism through applied work experience, related education opportunities, and successful completion of a certification examination. This group of professionals includes risk managers, loss control specialists, fire officers, fire marshals,. The CFPS Primer , while not a test prep classroom training , does offer practical instruction that will help you quickly locate specific facts within the encyclopedic handbook.

If you are serious about your career in fire protection, the CFPS credential serves as a distinguished mark of achievement within the profession. Save time and money on must-have code training with the CFPS Core Learning Series. The goal of the CFPS program is to promote the discipline of fire protection and prevention. A specific degree is not mandatory for obtaining your CFPS designation. The credential is a balance of education and experience and provides an opportunity for the fire protection specialist to achieve professional recognition.

The current body of knowledge for the examination is the NFPA Fire Protection Handbook, 20th edition. Training and events The Centre for Public Scrutiny ’s expert training helps equip those involved in scrutiny and oversight with the skills, knowledge and confidence to challenge effectively, and support organisational improvement.

Arc welding

View Our Online Inventory Of Thousands Of Commercial Robots And Parts And Save Up To. Huge Discounts On Welding Products. By applying intense heat, metal at the joint between two parts is melted and caused to intermix - directly, or more commonly, with an intermediate molten filler metal.

Arc welding is one of several fusion processes for joining metals. A power supply creates an electric arc between a consumable or non-consumable electrode and the base material using either direct (DC) or alternating (AC) currents.

Here you will also learn about different types of arc welding , welding equipment, advantages and disadvantages, and application. The process of joining metal to metal with the help of an electric arc is called arc welding. The arc welding is a fusion welding process in which the heat required to fuse the metal is obtained from an electric arc between the base metal and an electrode.

M2and M2Power Supplies End of Sale. The M217P Portable Welding System Controller. Welding fumes and gases can cause long-term health issues.

The most common approach to Arc Welding is when an antagonist, hidden up to that point, is shown to be responsible for all the major threats the protagonists have faced thus far.

Water scarcity paragraph

Water scarcity involves water crisis , water shortage , water deficit or water stress. Physical water scarcity refers to a situation where natural water resources are unable to meet a region’s demand and economic water scarcity is a result of poor water management resources. Essay Water Scarcity Of Water Shortage Water is the sustainment for all life as we know it, without it, we will all perish. Because of the critical shortage of the often overlooked natural resource of water , the world will soon be thrust into a long and enduring crisis. Water Scarcity is harmful to human life because when water is poorly managed throughout the worl those who need water are deprived of nutrients they truly need causing them to die.

This eventually affects the global population.

Simply put, water scarcity is either the lack of enough water (quantity) or lack of access to safe water (quality). But, in the developing worl finding a reliable source of safe water is often time consuming and expensive. It mostly affects arid and deserted areas, and places where the water is too polluted to drink. It is a social, environmental and economic problem in many countries. Water Shortage Water shortage problem is when humans or living creatures suffer from a scarcity of water another definition for water shortage is either the lack of enough water or lack of access to safe water and it happens because of the dreadful use of water and polluting rivers, oceans and lakes.

Deionized water vs distilled water

Can I drink deionized water? How to make deionized water? What are the dangers of drinking distilled water? Usually, a mixed ion exchange bed with both positive and negative charged resins is used.

However, the method has a different set of drawbacks. For example, the process does little or nothing about any non-polar salts that may be in the solution.

Furthermore, distilled water requires a change of phase from vapor to liquid and back to liquid and no mixture with chemicals whereas deionized water requires a mixture with chemicals but no change of phase. In some cases, the requirement may go beyond the choice between deionized water vs distilled water as applications may require the use of “ultrapure” water. Demineralized , deionized , and distilled water share in that they are all types of purified water , meaning that they have undergone some treatment process to remove impurities and make the treated water suitable for a given use.

Rain is actually water that’s been distilled. A hot day’s sun causes water on the Earth’s surface to evaporate, creating a vapor. Those vapors rise, they become clouds, and when the temperature cools, the clouds release the vapor in the form of rain.

Piping design course

Industrial job and Sanjary (SEA) Norms etc. Hence, a considerable experience is required to handle these piping based structures and the engineers having an apt knowledge are preferred in the industry. Over the years many such standards and practices for piping system design have evolved and by itself is a major engineering science. Every engineering and construction company will then need trained manpower to design a piping system.

Learn piping design course in Vadodara.

PWInstitute is a well-known piping design institute in Vadodara offers various design projects and also teaches number of piping engineering courses. This Course will explain all required steps in order to have a solid piping design and to understand what are the Key Engineering deliverable used in piping industry pertaining oil and gas. Piping Design to testing and certification. This course is structured to raise the level of expertise in piping design and to improve the competitiveness in the global markets. This course provides various piping system designs, development skills and knowledge of current trends of plant layout.

The content of the modules is based on ASME B31. Training on CAD-system solid works and pipe stress analysis software Caesar II is part of this course.

Types of bolts and nuts pdf

External Tooth Lock A washer with external ‘teeth’. Used to prevent nuts and bolts from backing out. Ogee Thick , large diameter, cast iron washers with a curved or sculpted appearance. Typically used in dock and wood construction.

Internal Tooth Lock A washer with internal ‘teeth’.

Cable trays to brackets and other components. Knowing the names and the specific types of screws , bolts , washers, or nuts you will need for your current or future DIY project is very important. Simply knowing the head type on a screw or bolt can let you know what type of screwdriver or socket type you will need so you do not strip or cross thread your fastener.

In this article, you will learn about the types of nuts and bolts. A bolt contains two parts a shank and a head. The cylindrical portion of the bolt is known as the shank. Fully threaded hex bolts are also known as tap bolts.

Wood screws have large threads and a smooth shank f or pulling two pieces of material together.

They can be used in wood and other soft materi-als. Sheet metal screws have sharp points and threads, and are designed to be driven directly into sheet metal.

Fire alarm system شرح

Protect Your Home With Reliable Alarm Systems From Trusted Professionals. No landline neede no long contracts. Order today, be protected next week. Fire alarm parts and components are available here.

All the functions of a fire alarm system are accomplished by a series of inputs and outputs.

A Zone is a circuit and typically one would wire a circuit per floor or fire compartment. A control unit receives inputs from all fire detection devices, automatic or manual, and activates the corresponding notification systems. Chubb is a leading fire alarm solution and service provider.

We design, supply, install and maintain fire detection and alarm system for infrastructures, buildings, factories and industrial sites. In addition, fire alarms can be used to initiate the adequate response measures when fire is detected. This interconnectivity allows the control personnel to identify the location or “address” where the initial detection occurred.

Mircom provides a full line of advance intelligent and addressable fire alarm control panels with expandable modular components.

Network design pdf

Basic Network Design Frequency Reuse and Planning Cellular Technology enables mobile communication because they use of a complex two-way radio system between the mobile unit and the wireless network. Network Design Planning a Network with Different Users, Hosts, and Services Objective The objective of this lab is to demonstrate the basics of designing a network , taking into consideration the users, services, and locations of the hosts. What are the design considerations for the core, distribution, and access layers?

Overview Optimizing the design of a network is a major issue. Chapter 1: Hierarchical Network Design Figure 1-Flat Switched Network Figure 1-Hierarchical Network A hierarchical network design involves dividing the network into discrete layers. Each layer, or tier, in the hierarchy provides specific functions that define its role within the overall network.

It is important in any design project that network designers carefully analyze and evalu-ate the scope of the design before starting to gather information and plan network design. The chapter concludes with an introduction to design considerations for the Enterprise Data Center. Local and Wide Area Networks with the goal of providing increase productivity, employee performance and improved workflow.