Home > Introduction NIKAN F .M. ENGINEERING Co.Ltd

Introduction NIKAN F .M. ENGINEERING Co.Ltd
NIKAN, using technical software and hardware facilities, works in the fields of designing and fabricating fuel tanks, and fire extinguishing and fuel carrying systems. It also designs, installs, implements, and provides support for water and waste water treatment systems.
NIKAN also designs and fabricates desalination systems, makes and installs industrial equipment in the form of EPC, and participates in industrial projects as management consultant (MC).

NIKAN constantly strives to satisfy its clients and ensure that its products are of the highest quality. With our attention to detail we have been able to successfully accomplish a wide variety of technically difficult MC and EPC projects.

Product > Accumulator

Accumulator:

Standard bladder type hydraulic accumulators range from 1 liter to 500 liter with maximum working pressure of 420 bar manufactured in accordance with PED97-23-EC. Specials are also available for higher pressure, corrosive environments and aggressive fluids.
Standard piston type accumulators range in capacity from 0.5 liter to 80 liter with maximum working pressure of 250, 350 and 415 bar manufactured in accordance with PED97-23-EC.
Special have also be manufacture for pressure up to and above 1000 bar, and options are available in stainless steel.

Air blast oil coolers that offer heat dissipation performance from 1-100 kw. Units are available for return line flow application up to 500 lpm. Cooler can be supplied with integral off line recirculating pumps. Fans drives are available in 220/1/50, 413/3/50 12 DC and 24 DC electrical supply and options are also available with hydraulic fan motors.

Stainless steel plate type water oil heat exchangers are designed to provide compact highly efficient cooler. The brazed plate construction allows for a max oil working pressure of 20 bar and the unique design ensure high levels of heat transfer between the oil and water with relatively low water consumption, standard units range in size from 0-200 kw heat dissipation.

The provide the total package offer an extensive range of accessories including portable and permanent nitrogen charging equipment, service tool kits, mounting brackets and clamps to suit all UK and European standard bladder accumulators.

Product > Filtration > Gas filtration > Coaleser
Air / Gasfilter-Separator

The application of this filter separator is the removal of solid impurities and Precipitiational

Of condensate, also in mis form,out of air and gas streams. The pressure vessel is equipped with coalescer elements. The elements consits of various layers of packed glass fiber. fine and finest droplets are carried by the gas stream into this layers. These droplets encounter fibers.

stick down to them and run down. On the way downwards they meet other droplets and agglomerate to larger droplets which are flowing down inside the fiber glass layers also. To achieve the high separation efficiency the gas muts flow from the inside to the outside of the coalescer elements. If no solid particles are present in the gas stream the replacement of the elments is not required.

Product > Filtration > Gas filtration > Cyclone

Cyclone separators have been used in the United States for about 100 years , and are still one of the most widely used of all industrial gas-cleaning devices. The main reasons for the wide-spread use of cyclones are that they are inexpensive to purchase, they have no moving parts, and they can be constructed to withstand harsh operating conditions.

Typically, a particulate-laden gas enterstan gen tially near the top of the cyclone, as shown schematically in Figure 1. The gas flow is forced into a downward spiral simply because of the cyclone’s shape and the tangential entry. Another type of cyclone (a vane-axial cyclone – see right panel of Figure 1) employs an axial inlet with fixed turning vanes to achieve a spiraling flow. Centrifugal force and inertia cause the particles to move outward, collide with the outer wall, and then slide downward to the bottom of the device. Near the bottom of the cyclone, the gas reverses its downward spiral and moves upward in a smaller inner spiral. The cleaned gas exits from the top through a “vortex-finder” tube, and the particles exit from the bottom of the cyclone through a pipe sealed by a spring-loaded flapper valve or rotary valve.

Figure 1

Cyclones by themselves are generally not ad equate to meet strin gent air pollution regulations, but they serve an important purpose. Their low capital cost and their maintenance-free operation make them ideal for use as precleaners for more expensive final control devices such as baghouses or electrostatic precipitators. In addition to use for pollution control work, cyclones are used extensively in process industries; for ex ample,they are used for recovering and recycling certain catalysts in petroleum refineries and for recovering freeze-dried coffee in food processing plants.

Product > Filtration > Gas filtration > Dry gas filter

Absolute high efficiency, high flow Pleated and depth filter cartridges to filter down to 0.5 micron at low differential pressures.
Filter cartridges made of Glass Microfiber, Polypropylene" Polyester, SS 316, M'onel etc.
ASME lU' stamped NACE confirming filter vessels suitable for sour gas filtration and confirming to Gas industry stanoards.

Product > Filtration > Gas filtration > Scrubber
Air / Gasfilter-Scrubber

The application of the Scrubber is the removal of mechanical and liquid impurities out of air and gas streams. The use of the Scrubber is recommended it a separation efficiency off 99% above 8 microns is required, slugs could occur or maintenance-free operation without the exchange of filter elements is required.

Product > Filtration > Liquid filtration > Decanter

The decanter is used for the separation of two or more phases of different specific gravity. In particular For the clarifying of liquids in which suspended solids are present.

The separation of solids and liquids takes place within a cylindrical/conical rotating drum, upon the periphery of which the heavier solid phase collects and is continually removed by the internal conveyor.

A polyelectrolyte, suitably chosen for its type and specific characteristics, may be added to the product being fed to the machine in order to improve the solid-liquid separation.

The polyelectrolyte favors the aggregation and thus the easier capture of the solid particles.

A polyelectrolyte is not always compatible with products being processed. it is generally used in purification processes for the drying of sludge. But not in intermediate product conversion processes , and even less in the processing of foodstuffs.

Product > Filtration > Liquid filtration > Duplex filter

Duplex Filter is used to fluid filtration from impurities. This equipment consists of two vessels with needed filters. The isolating lines will be handling with butterfly or 3-way valve. The filters of duplex filter are washable. The standard that usual for vessel drawing Is ASME .

Product > Floating suction

Floating Suctions for above or below ground horizontal tanks are used where little or no contamination can be tolerated such as jet fuel. Since the fuel near the top is least likely to contain water or foreign particles, these assemblies are designed to float near the top of the liquid surface and drawing from this near surface contamination free liquid.

Benefits
 Maintenance free

 Easy movement in the liquid

 Increase efficiency and decreases maintenance of filter separators.

Product > Fuel forwarding skid

Product >Hot gas parts component >Gas turbine component repair > Fuel nozzle

Product >Hot gas parts component >Gas turbine component repair > General electric lm series gas turbine

Product >Hot gas parts component >Gas turbine component repair > MOOG servo valve

Product >Hot gas parts component > Gas turbine spare parts

Product > Pump > Centrifugal pump

A centrifugal pump is a rotodynamic pump that uses a rotating impeller to increase the velocity of a fluid. Centrifugal pumps are commonly used to move liquids through a piping system. The fluid enters the pump impeller along or near to the rotating axis and is accelerated by the impeller, flowing radially outward into a diffuser or volute chamber, from where it exits into the downstream piping system. Centrifugal pumps are used for large discharge through smaller heads

A centrifugal pump works by the conversion of the rotational kinetic energy, typically from an electric motor or turbine, to an increased static fluid pressure. This action is described by Bernoulli's principle. The rotation of the pump impeller imparts kinetic energy to the fluid as it is drawn in from the impeller eye (centre) and is forced outward through the impeller vanes to the periphery. As the fluid exits the impeller, the fluid kinetic energy (velocity) is then converted to (static) pressure due to the change in area the fluid experiences in the volute section. Typically the volute map of the pump casing (increasing in volume), or the diffuser vanes (which serve to slow the fluid, converting to kinetic energy in to flow work) are responsible for the energy conversion. The energy conversion results in an increased pressure on the downstream side of the pump, causing flow.

Product > Pump > Internal gear pump

Internal gear pumps are exceptionally versati le. While they are often used on thin liquids such as solvents and fuel oil, they excel at efficiently pumping thick liquids such as asphalt, chocolate, and adhesives. The useful viscosity range of an internal gear pump is from 1cPs to over 1,OOO,COOcP.

In addition to their wide viscosity range. the pump has a wide temperature range as well,
handling liquids up to 750 F /400 C. This is due to the single point of end clearance
(the distance between the ends of the rotor gear teeth and the head of the pump). This clearance is adjustable to accommodate high temperature, maximize efficiency for handling
in high viscosity liquids, and to accommodate for wear
The internal gear pump is non-pulsing, self-priming, and can run dry for short periods. They're al so bi-rotational meaning that the same pump can be used to load and unload vessels. Because internal gear pumps have only two moving parts, they are reliable,simple to operate, and easy to maintain.

Our Activities > Waste Water Treatment> Introduction

Every community produces both liquid and solid wastes and air emissions. The liquid waste-wastewater- is essentially the water supply of the community after it has been used in a variety of applications. From the standpoint of sources of generation, wastewater may be defined as a combination of the liquid or water-carried wastes removed from residences, institutions, and commercial and industrial establishments, together with such groundwater, and surface water as may be present.
When untreated wastewater accumulates, the decomposition of the organic matter it contains will lead to nuisance conditions including the production of malodorous gases. In addition, untreated wastewater contains numerous pathogenic microorganisms that dwell in the human intestinal tract. Wastewater also contains nutrients, which can stimulate the growth of aquatic plants, and may contain toxic compounds or compounds that potentially may be mutagenic or carcinogenic. For these reasons, the immediate and nuisance-free removal of wastewater from its sources of generation, followed by treatment, reuse, or disposal into the environment is necessary to protect public health and the environment.
Wastewater engineering is a branch of environmental engineering in which the basic principles of science and engineering are applied to solving the issues associated with the treatment and reuse of wastewater. Selection of wastewater treatment process or sequence of processes depend on a number of factors including
1- Characteristics of the wastewater, e.g., BOD, % of suspended solids, pH, presence of toxic materials;
2- Required effluent quality;
3- Cost and availability;
4- Consideration of a possible future upgrading of water quality standards.
In the following chapters, brief descriptions of treatment processes will be presented.

Our Activities > Waste Water Treatment> Pretreatment and primary treatment

Pretreatment of wastewater implies removal of suspended solids or conditioning of wastewater for discharge into either a receiving body or a secondary treatment facility through neutralization and/or equalization. Types of primary treatment are:
1- Screening,
2- Sedimentation,
3- Flotation,
4- Neutralization and equalization.

Screening is employed for removal of suspended solids of various sizes. Screen openings range in size depending on their purpose, and cleaning of screens is done either manually or mechanically. Screens are classified as fine and coarse. They are used as protecting devices so that large suspended solids do not damage pumps and other equipment.
Sedimentation is utilized in wastewater treatment to separate suspended solids from wastewaters according to the difference in specific gravity between solid particles and the bulk of the liquid. Sedimentation is utilized in one or more steps of a treatment sequence.
Such as: 1- in girt chambers, in which inorganic matter (e.g., sand) is removed from the wastewater 2- in primary clarifier, which precedes the biological reactor, solids are separated, and 3- in secondary clarifier, which follows the biological reactor, the biological sludge is separated from the treated effluent.
Flotation is a process for separating low density solids or liquid particles from a liquid phase. Separation is brought about by introduction of gas (usually air) bubbles into the liquid phase. The liquid phase is pressurized to an operating pressure ranging from 2 to 4 atm in the presence of sufficient air to promote saturation of air in the water. Then this air-saturated liquid is depressurized to atmospheric pressure by passage through a pressure-reducing valve. Minute air bubbles are released from the solution because of depressurization. Suspended solids or liquid particles are floated by these minute air bubbles causing them to rise to the liquid surface.
Neutralization is often utilized in some cases arising in wastewater treatment such as: 1- prior to discharge of the wastewater into a water receiving. Since the aquatic life is sensitive to pH variation beyond a narrow range around pH 7, and 2- prior to biological treatment. For biological treatment pH of the system is maintained within 6.5-8.5 to ensure optimum biological activity. This may be done by addition of acids or bases to alkaline or acidic wastewater streams.

Our Activities > Waste Water Treatment> Secondary treatment

The heading secondary treatment encompasses all biological treatment processes of wastewaters, both aerobic and anaerobic. Types of popular biological treatment processes utilized in treatment plants are:
1- Activated sludge process,
2- Extended aeration,
3- Aerated lagoons,
4- Wastewater stabilization ponds,
5- Anaerobic treatment.

The activated sludge process has been developed as a continuous operation by recycling the biological sludge. The basic activated-sludge treatment process consists of the following three basic components: 1- a reactor in which the microorganisms responsible for treatment are kept in suspension and aerated; 2- liquid-solids separation, usually in a separation tank; and 3- a recycle system for returning solids removed from the liquid-solid separation unit back to the reactor. An important feature of the activated-sludge process is the formation of flocculent settleable solids that can be removed by gravity settling in sedimentation tanks.
Extended aeration, also referred to as total oxidation, is a modification of the activated sludge process. The fundamental idea in extended aeration as compared to the conventional activated sludge process is to minimize the amount of excess sludge. This is achieved by increasing residence time; thus reactor volume is comparatively larger than that required in conventional activated sludge process.
Aerated lagoons are basins having depths varying from 1.5 to 4.5 m in which oxygenation of wastewaters is accomplished by aeration units. Aerated lagoons are flow-through devices, i.e., no recycle of sludge is provided.
Wastewater stabilization ponds don’t employ any equipment for aeration. Oxygen needs for ponds are provided by natural surface aeration and by algae, which produce oxygen by photosynthesis. Wastewater stabilization ponds are feasible when large land areas are available at low cost and high quality effluent is not required.
Anaerobic treatment is utilized for treatment of wastewaters as well as for digestion of sludge. This process comprises two stages: 1- acid fermentation and 2- methane fermentation. In the acid fermentation stage, organic materials are broken down to organic acids mainly acetic. In the methane fermentation stage, “methane microorganisms” convert the longer chain acids to methane, carbon dioxide, and an acid having a shorter carbon chain. Anaerobic treatment is relatively inexpensive since aeration equipment is not utilized. On the other hand, residence times required are much longer than for aerobic processes. Bad odors associated with anaerobic processes, due mainly to production of H2S, may constitute a serious limitation, particularly in urban areas.

Our Activities > Waste Water Treatment> Tertiary treatment

Tertiary treatment, also referred as “advanced wastewater treatment”, consists of processes which are designed to achieve higher effluent quality than conventional secondary treatments described before. Most common types of tertiary treatment will be discussed here.
Chlorination is a widely used process in the treatment of domestic and industrial wastewaters. Some industrial effluents which are commonly chlorinated prior to discharge into receiving waters are those cannery, dairy, pulp and paper, textile, petrochemical and metal processing plants. Purposes of chlorination are:
1- Disinfection; owing to its strong oxidization capacity, chlorine destroys or inhibits growth of bacteria and algae,
2- BOD reduction
3- Elimination or reduction of colors and odors,
4- Oxidization of metal ions,
5- Oxidation of cyanides to innocuous products.

The germicidal properties of the radiation emitted from ultraviolet (UV) light sources have been used in a wide variety of applications since its use was pioneered in the early 1900s. first used on high-quality water supplies, ultraviolet light as a wastewater disinfectant has evolved during 1990s. With proper dosage, ultraviolet radiation has proved to be an effective bactericide and virucide for wastewater, while not contributing to the formation of toxic byproducts.
Activated carbons have been widely used in water treatment plants to remove taste and odor causing organics. When such these organics is placed in contact with activated carbon surface, a layer of molecules of these organics accumulates at the surface of the solid (activated carbon) due to imbalance of surface forces.

Our Activities > Waste Water Treatment> Sludge treatment and disposal

Most primary treatment processes as well as secondary treatment sequences yields sludges which must be disposed of in some adequate way. Aerobic and anaerobic digestion, thickening, pressure filtration, centrifugation, bed drying of sludges and incineration are possible ways of disposal of the sludge.
Aerobic digestion is a process in which a mixture of primary digestible sludge from primary and secondary treatment is aerated is aerated for an extended period of time. The purpose of aerobic digestion is to reduce the amount of sludge which is to be disposed of subsequently. Anaerobic digestion is mainly based on the fact that if settled sludges are kept in a closed tank for a period of time, they are converted to a liquid state a combustible gas containing methane is generated.

Thickening is the usual first step in sludge disposal processing. It can be done 1- by gravity; tanks of circular cross section provided with a rotating rake mechanism and 2- by dissolved air flotation which can be utilized for sludges and is specially recommended for gelatinous ones such as those from the activated sludge process.
Filtration involves the removal of particulate material suspended in a liquid by passing the liquid through a filter bed comprised of a granular or compressible filter medium. Filtration is used to achieve supplemental removals of suspended solids from wastewater effluents of biological and chemical treatment processes to reduce the mass discharge of solids and as a conditioning step that will allow for the disinfection of the filtered effluent.
For separating liquids of different density, thickening slurries, or removing solids the centrifugal process is widely used in industry. In a centrifuge package, sludge solids are compacted by centrifugal force against the inner walls of a motor-driven rotating bowl, then picked up by a conveyor and taken to the solids discharge port. Liquid is discharged at the opposite end of the bowl.
Air drying of sludges on sand bends is one of the most economical methods for dewatering. It is most common method for small treatment plants, for both domestic and industrial wastewaters. Dewatering of sludges occurs by two mechanisms: 1- percolation of water through the sand bed, and 2- evaporation of water. Economic feasibility of the process depends greatly on availability of land at a reasonable cost and favorable climate conditions (dry and warm climate).
Incineration of sludge involves the total conversion of organic solids to oxidized end products, primarily carbon dioxide, water and ash. Incineration is used most commonly by medium-to large sized plants with limited disposal options. Sludges processed by incineration are usually dewatered, untreated sludges. It is normally unnecessary to stabilize sludge before incineration.

Our Activities > Waste Water Treatment> Progresses and wastewater treatment

6-1- SBR
The sequencing batch reactor (SBR) process utilizes a fill-and-draw reactor with complete mixing during the batch reaction step (after filling) and where the subsequent steps of aeration and clarification occur in the same tank. All SBR systems have five steps in common, which are carried out in sequence as follows:
1- Fill,
2- React (aeration),
3- Settle (sedimentation /clarification),
4- Draw (decant),
5- Idle.
During the fill operation, volume and substrate are added to the reactor. The fill process typically allows the liquid level in the reactor to rise form 75% of capacity (at the end of idle period) to 100%. During fill, the reactor may be mixed only or mixed and aerated to promote biological reactions with the influent wastewater.
During the react period, the biomass consumes the substrate under controlled environmental conditions.
During the settle period, solids are allowed to separate from the liquid under quiescent conditions, resulting in a clarified supernatant that can be discharged as effluent.
Clarified effluent is removed during the decant period. Many types of decanting mechanisms can be used, with the most popular being floating or adjustable weirs.
An idle period in a multitank system provides time for one reactor to complete its fill phase before switching to another unit. Because idle is not a necessary phase, it is sometimes omitted.
For continuous-flow applications, at least two SBR tanks must be provided so that one tank receives flow while the other completes its treatment cycle.

6-2- UASB
One of the most notable developments in anaerobic treatment process technology is the upflow anaerobic sludge blanket (UASB) reactor in the late 1970s in the Netherlands. In this process wastewater is distributed at the bottom of the UASB reactor and travels in an upflow mode through the sludge blanket. Critical elements of the UASB reactor design are the influent distribution system, the gas-solid separator, and the effluent withdrawal design.
The key feature of the UASB process that allows the use of high volumetric COD loadings compared to other anaerobic processes is the development of a dense granulated sludge. Several months may be required to develop the granulated sludge, and seed is often supplied from other facilities to accelerate the system startup.

Our Activities > Waste Water Treatment> Appendix

pH
The hydrogen-ion concentration which is an important quality parameter of both natural waters and wastewaters. The concentration range suitable for the existence of most biological life is quite narrow and critical (typically 6 to 9).So, wastewater with an extreme concentration of hydrogen ion is difficult to treat by biological means, and if the concentration is not altered before discharge, the wastewater effluent may alter the concentration in the natural waters. For treated effluents discharged to the environment the allowable pH range usually varies from 6.5 to 8.5.

BOD (Biological Oxygen Demand)
Quantity of oxygen required for oxidation of biodegradable organic matter present in the water sample by aerobic biochemical action.

ThOD (Theorical Oxygen Demand)
Stochiometric amount of oxygen required to oxidize completely a given compound.

COD (Chemical Oxygen Demand)
The amount of oxygen required to oxidize the organic fraction of a sample which can be oxidized chemically using dichromate in an acid solution.

TOC (Total Organic Carbon)
The total amount of organic carbon in an aqueous sample.

TS (Total Solids)
Total solid contents of wastewater varying from rags to colloidal materials.

TSS (Total Suspended Solids)
A fraction of TS in the wastewater which is settleable. A filtration step is used to separate these suspended solids and the amount of which depends on the pore size of the filter used for the test. Filters with normal pore sizes varying from 20 to 45 micrometers have been used for TSS measurement.

TDS (Total Dissolved Solids)
Those solids that is comprised of colloidal and dissolved solids and pass through the filter.

TVS (Total Volatile Solids)
Those solids that can be volatized and burned off when the TS are ignited.

VSS (Volatile Suspended Solids)
Those solids that can be volatized and burned off when the TSS are ignited.

Our Activities > Water Treatment

Engineering, Procurement, Construction and Start up of Industrial and Sanitary water treatment units

Pretreatment systems such as: Clarification (Coagulation, Flocculation and Sedimentation), Design and construction of sand filters and activated carbon filters

Ion Exchange packages such as Anionic resins, Cationic resins, Mixed bed resins and degassifier

Membrane treatment systems (Ultrafiltration and Reverse Osmosis)

Distillation Desalination Systems such as Single Stage Distillation (SSD)

MED Desalination Units (Multi-Effect Desalination)

MSF Distillation Units (Multi-Stage Flash Distillation Units)

VCD Desalination Units (Vapor compression Distillation)

Our Activities > Fire Fighting Systems

Microprocessor based analog addressable Fire Detection System

Conventional Fire Detection System

High Sensitive Smoke Detection Systems

CO2 Extinguishing System

Automatic Fire Hydrants, sprinklers, medium velocity and high velocity spray systems

Water fog & Water mist system

Dry Chemical Powder (DCP) Extinguishing System

Fire proof cable coating and sealing system

All types of portable & trolly mounted Fire Extinguisher

All types of safety equipment like Breathing Apparatus, Gas Masks, Fire Suits etc

Our Activities > Tank Fabrication and Fuel Handling Systems

NIKAN Company is Designer and fabricator of Fuel storage tanks such as Fixed roof or floated roof tanks and fuel handling systems.

Our Activities > Pump Station and Piping

NIKAN Company is the designer and executer of pump station and pipeline projects according to relevant standards.

Services > Commissioning & Operation

Increasing the lifespan of membranes used in operational systems is very important, and this is made possible with the good maintenance and management of the systems.
The NIKAN Company has developed an after-sales-service unit in order to help users of RO water treatment systems, to decrease their maintenance costs and expand the lifespan of RO membranes.
This new unit provides the following services to the owners of water treatment systems:

Ongoing and regular inspections of the water treatment systems by experienced experts.

Instructing and training of personnel while the system is being installed.

Chemical washing and maintenance of membranes.

Providing the necessary spare parts.

Making available reports on the condition of water treatment systems, problems, and solutions to the client.

Services > Management & Contractor

NIKAN Company, thanks to its group of experienced managers and engineers who all have valuable experience working on big industrial projects in Iran, has started implementing industrial projects in MC form.

NIKAN uses experienced and specialized technical personnel, and competent advisors and contractors, to assume responsibility for managing a wide variety of executive projects, structural projects, installing machinery, and also purchasing and transporting necessary materials. These tasks may be subcontracted to trusted companies to ensure contracts are fulfilled with the best possible quality, deadlines are met and projects remain within budget.

About Us > NikanCo about us

NIKAN using the state-of-the-art technology has always been a pioneer. It has been able to take big steps towards increasing its presence and market share in a variety of different industries, especially the important oil and energy industries.
Our activities include:

Water treatment systems based on Reverse Osmosis (RO), Ultrafiltration (UF), Ion Exchange Resins technologies and relevant pre-treatments.
Urban and industrial waste water treatment systems.
Tank fabrication and fuel handling systems.
Developing and installing fire fighting systems (alarm and extinguishing systems).
Deslater systems (Salty water separation from crude oil).
Consulting on, designing, manufacturing, and implementing industrial projects in an EPC form.
Our company has also built up a strong skills base over many years and now has a group of highly qualified managers and engineers to take on industrial projects as their MC.

Careers

Nikan Farayand Mohafez offers technical and business career opportunities to qualified applicants looking for developing a long-term relationship with us through establishing mutual trust and contribution.

If you feel confident about your qualification in one of technical or business fields related to oil, gas and petrochemical industries, Please click here to download and fill in Nikan Farayand Mohafez standard Application Form.

Once you have completed the Application Form, please send it via email to info@nikanco.com

We will contact you to arrange an interview in case your qualification is deemed appropriate for the position.