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Showing posts with label Engineering. Show all posts
Showing posts with label Engineering. Show all posts
POPULAR ISO CERTIFICATION STANDARDS
POPULAR ISO CERTIFICATION STANDARDS
DISPLAYING YOUR CERTIFICATE
Remember, when labeling a product or system as certified to an ISO standard:Don't say: "ISO certified" or "ISO certification".
DO say: "ISO 9001:2015 certified" or "ISO 9001:2015 certification" (for example).
POPULAR ISO STANDARDS:
ISO 9000 FAMILY: QUALITY MANAGEMENT SYSTEM
ISO 9001 is designated for Improving organizations quality of products , services and consistently meet the customer exceptions. It enables organizations business benefits as well as sustainable management system.
ISO 22000 FAMILY: FOOD SAFETY MANAGEMENT
ISO 22000 is designated for organizations to identify and control food safety hazards. It helps in the global food supply chain, products cross border and bringing people their trust in food. Modern food industries are concern to implement this food safety management to gain customer faith.
ISO 45000 FAMILY: OCCUPATIONAL HEALTH AND SAFETY
ISO 45001 is designated for Improving organizations employee safety, reducing workplace risks and creating better, safer working conditions. ISO 18001 is withdrawn and replaced by ISO 45001.
ISO 14000 FAMILY: ENVIRONMENTAL MANAGEMENT
ISO 14000 standards designated for improving environmental performance of the organization. It helps to provide practical tools to manage the environmental responsibilities .
ISO / IEC 17025 FAMILY: TESTING AND CALIBRATION LABORATORIES
ISO 17025 is designated for laboratories for operate competently and generate valid results. As a result it is promoting confidence in their work both nationally and around the world. It facilitates cooperation between laboratories and other bodies by generating wider acceptance of results between countries in the world. In the international trade the test reports and certificates can be accepted from one country to another without the need for further testing .
ISO 5001 FAMILY: ENERGY MANAGEMENT SYSTEM
ISO 5001 standards designated for improving practical way of energy use, through the development of an energy management system.
A brief about ISO standardization in Bengali - ISO Standardization : A Brief Description in Bengali
Mechanical Engineer Job Interview Preparations
Mechanical Engineer Job Interview Preparations Bangladesh Perspective
( PART- 01)
To keep the machinery running and well almost all industries need mechanical Engineers. Mechanical Engineer works in different positions and departments respectively like Assistant Engineer, Engineer, Chief Engineer, Managerial level and Machine maintenance, Utility maintenance, Product Research & Development, Workshop, Operation etc. job in Studying various Bangladeshi industries job responsibilities requirement a short summary for preparing a job interview for a mechanical engineer is listed below.
> Valves : Different types of manual, Automatic ( Pneumatic, Electric Operated) valves used in Water, Steam, other Hydraulics, and Pneumatic line. Example: Globe valve, Butterfly valve, Check valve, gate valve etc. Applications of the valves, maintenance parameters etc. Other topics related with valves like Strainer, Reducer, Flanges, bend, elbow , Union , etc. are required to learn with their applications.
> Pumps: Pump is a very important equipment in modern industries. As a mechanical engineer once should know details of pump including their operation, maintenance and applications. Different pumps are used in different applications in water, and other hydraulic product line to convey them in desired destination. Centrifugal and Positive displacement pump ( Lube pump, Progressive cavity pump, Screw pump, gear pump , Piston pump etc.) are widely used in modern factory operations. pump seal is one of the most important things to understand .
> Conveyor : Conveyor system is used to carry the finished product as well as other products to one place to another. Conveyor system comprises with conveyor belts, motor, pulley/chain drive, conveyor frame etc. Types
> ETP : Effluent Treatment Plant is one of the waste treatment method which is designed to purify industrial waster water for its reuse and safe water to environment . The PH, DO, COD , BOD , TDS parameters and the terms used for.
> WTP: Water treatment Plant is the process used in industry to improve quality of water to use in the desired end use application. Widely improved water is used for Boiler, Process area etc.
> TPM: Total Productive Maintenance is a team based system which constantly improve the effective of machinery equipment for increasing plant and equipment reliability . Main pillars of TPM are Focused maintenance, Autonomy, Quality maintenance, Planned maintenance, Safety , health and environment, Training and education .
> Compressor: Compressor is one the most important utility equipment used in different industries. Types of Compressor, Compressor regular maintenance, troubled maintenance, Spare parts etc are necessary information required while preparing for the interviews.
> Boiler: Boiler is another most important utility equipment in various industry. Generally Boiler is used to get steam for using in different application . Steam has direct and indirect use in the plant. Boiler mountings, accessories , Burner system, regular check list, maintenance schedule, Boiler water parameters are important topics. Condensate recovery system , Exhaust gas boiler , are also related with boiler.
> Chiller: For process area and machinery uses Chiller is used to maintain to control the room temperature. Air Handling Unit, Chiller regular check list, regular maintenance , Chiller types, Air Handling Unit (AHU) , diffuser, Refrigerant types and characteristics etc are important topics. Working principle of Chiller, Block diagram , etc are theoretical topics .
> Cooling Towers: Cooling tower is used to cooling the water of chiller, hydraulic system etc. Different types of cooling towers are used in different uses. Cooling tower maintenance list, cooling tower types, cooling tower load calculation are important topics.
> PLC : Every modern industries are now using PLC based machinery for smooth , accurate and less time consumption. How PLC works , troubleshooting knowledge will enhance job prefer-ability.
> QMS : Quality Management System, ISO 17025:2017 documentation list .
> Workshop Practice: Lathe Operation, Milling Operation, Drilling Operation, Grinding operation, drills and bits, Bending Operation, Shaper operation, HSS cutting tools, Tapping tools etc.
> Welding Process: Different types of Welding process like arc welding, TIG welding etc.
> Painting : In industrial sector painting is very important issue. Painting code, painting surface preparation methods , painting process SOP etc. are important topics.
> Fire Safety Equipment's: Now-a-days fire safety is top most urgent issue for factory operation. Knowledge on NPFA, Audit requirements for Accord alliance, & Nirapom , BNBC , ISO 14001 details are the topics.
> Nitrogen Generator : In food industry Nitrogen generator are used largely. Flow diagram of Nitrogen Generator, Working principle, maintenance schedule etc are important.
> Metal : Different types of metal like Mild Steel, Stainless Steel, are commonly used metals in industries. Topics: Metal properties, application
> Bearing : In almost every rotating equipment bearing is used. Topics: Bearing sizing, bearing types , application, bearing changing methodology etc.
> Maintenance Tools : There are many tools are used for maintenance work. Topics: Tools identification, tools application etc.
More items:-
Hydraulic System, Pipe line design, Vacuum system , CNC , Refrigeration system, Hydraulic Press, Lubrication system, Pneumatic System, gear box, etc.
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Engineering Learning Part 01 (Otto Cycle)
Today we will discuss about Otto cycle.
Otto Cycle:
The Otto cycle is a set of processes used by
spark ignition internal combustion engines (2-stroke or 4-stroke cycles).
Otto Cycle is named
after Nikolus Otto (Nikolaus Otto a German Scientist developed Otto Cycle (Idealized
Thermodynamic Cycle) for Internal Combustion Engine. Nikolus was born in 1832
and died 1891).
The Otto cycle is constructed from:
1) Top and bottom of the loop: a pair of
quasi-parallel and ISENTROPIC PROCESSES (Friction less, adiabatic
reversible).
2) Left and right sides of the loop: a pair of
parallel ISOCHORIC PROCESSES (constant volume).
The Cycle Process-
1-2: Compression Stroke. Adiabatic Compression of
air/Fuel Mixture in the cylinder. Isentropic Compression.
2-3: Ignition of the compressed air/fuel mixture at
the top of the compression stroke while the volume is essentially constant.
Constant Volume Heating.
3-4: Expansion (Power Stroke). Adiabatic Expansion
of the hot gases in the cylinder. Isentropic Expansion.
4-1: Exhaust stroke. Ejection of the spent, hot
gases. Constant volume cooling.
What is Isentropic Processes?
In thermodynamics, an isentropic process is an
idealized thermodynamic process that is both
adiabatic and reversible. The work transfers of the system are friction less,
and there is no transfer of heat or matter.
What is an Isochoric process?
An isochoric process, also called a constant-volume process, an iso volumetric process, or an isometric process, is a thermodynamic process during which
the volume of the closed system undergoing such a process remains constant.
Some Links related to Otto Cycle Mathematical Problems with answers-
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