Premises requirements. Maintenance and repair of instrumentation What does an instrumentation fitter do
I quote appendix 2 of the referenced document:
BASIC REQUIREMENTS FOR THE PREMISES OF VERIFICATION DIVISIONS
1. The premises of the verification departments must comply with the current construction and sanitary standards, be dry, clean and isolated from production areas where dust, corrosive vapors and gases can penetrate. It is not allowed to conduct steam and gas pipelines and fan pipes through the premises of the verification departments.
2. Verification departments are located in a special building or room away from high-voltage power lines, contact power (electric transport), sources of vibration, noise (with a level above 90 dB), radio interference (electrical welding and high-frequency electrical equipment) and from objects that create strong magnetic or electrical fields (converting substations, installations induction heating etc.). The permissible level of interference is established in the RD for the relevant verification methods.
3. When placing verification equipment, it is recommended to observe the following standards: passage width - at least 1.5 m; the width of the unoccupied space near individual verification installations (sets of verification tools) or their stationary elements - at least 1 m; distance from cabinets and tables with measuring or verification instruments up to heating systems- not less than 0.2 m; the distance between the working tables, if one checker works at the table - at least 0.8 m, and if two - at least 1.5 m.
4. In the premises it is necessary to maintain a constant air temperature of +20 °C and relative humidity within (6015)%. Permissible deviations are set in accordance with the RD for the methods of verification work performed in the room. In cases where deviation from normal temperature(20 °С) should not exceed 3 °С, temperature control devices are installed in the premises.
5. The coefficient of natural illumination on the surface of the principal's table is allowed within 1.00-1.50. They provide conditions so that the daylight in the room is diffused and does not give glare, for which there should be curtains on the windows. Windows in rooms where measuring instruments for linear and angular values, mass, volume and flow of liquids and gases are verified should be located on the north side of the building.
It is recommended that the artificial lighting of verification departments, which do not have special requirements for lighting, be fluorescent, diffused. In rooms where stroboscopic measuring instruments are verified, incandescent lamps are used. Illumination at the level of the workplace should not be less than 300 lux.
6. Walls up to 3/4 of their height are painted oil paint light colors, the rest of the walls and ceilings - white durable paint that allows wiping. Floors of rooms for which special requirements are not established are recommended to be covered with linoleum, relin or plastic.
Special requirements for the premises of verification departments are established in the verification procedures for the corresponding measuring instruments or in other regulatory, technical and operational documentation.
7. Operations associated with the use of aggressive, toxic or explosive substances or with the preparation of measuring instruments for verification (re-preservation, cleaning, etc.) and accompanied by air pollution or flammable emissions are recommended to be carried out in separate isolated rooms. Workplaces in these rooms are equipped with fume hoods, local suction and other devices for removing harmful or flammable liquids, vapors and gases.
In addition, keep in mind that each computer must have at least 6 m 2 and 20 m 3
This job description has been translated automatically. Please note that automatic translation does not provide 100% accuracy, so there may be minor translation errors in the text.
| Instructions for the position " Head of the laboratory of instrumentation and automation", presented on the website, complies with the requirements of the document - "DIRECTORY of qualification characteristics of workers' professions. Issue 87. Housing and communal services of settlements. (Taking into account the applications approved by: order of the State Committee of Ukraine on Housing and Communal Services of 09.07.2004 N 132, order of the State Housing and Communal Services of Ukraine on 22.11.2004 N 210, order of the Ministry of Housing and Communal Services of 08.12.2009 N 387, order of the Ministry of Housing and Communal Services of Ukraine on December 23, 2010 N 464), which was approved by the order of the State Committee for Construction, Architecture and Housing Policy of Ukraine on June 14, 1999 N 144. Agreed by the Ministry of Labor and social policy Ukraine. The status of the document is "valid". |
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Preface to job description
0.1. The document comes into force from the moment of its approval.
0.2. Document developer: _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _.
0.3. Document approved: _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _.
0.4. Periodic verification of this document is carried out at intervals not exceeding 3 years.
1. General Provisions
1.1. The position "Head of the laboratory of instrumentation and automation" belongs to the category "Managers".
1.2. Qualification requirements - complete higher education relevant area of study (master or specialist). Postgraduate education in management. Work experience by profession: for a master - at least 2 years, for a specialist - at least 3 years.
1.3. Knows and applies:
- resolutions, orders, orders of higher authorities;
- regulations, instructions and other guidance regarding measuring instruments;
- laboratory equipment and rules for its operation;
- regulatory and technical documentation (standards, specifications and rules technical operation trams and trolleybuses;
- basics of labor legislation;
- rules and norms of labor protection, industrial sanitation and fire protection.
1.4. The head of the laboratory for instrumentation and automation is appointed to the position and dismissed by order of the organization (enterprise / institution).
1.5. The head of the laboratory for instrumentation and automation reports directly to _ _ _ _ _ _ _ _ _ _ .
1.6. The head of the laboratory of instrumentation and automation controls the work of _ _ _ _ _ _ _ _ _ _ .
1.7. The head of the laboratory for instrumentation and automation during absence is replaced by a duly appointed person who acquires the appropriate rights and is responsible for the proper performance of the duties assigned to him.
2. Description of work, tasks and job responsibilities
2.1. Carries out control over the operation and maintenance of technical accounting of measuring instruments.
2.2. Organizes work on testing new measuring instruments.
2.3. Develops and implements standards (methods) for performing measurements, establishing a rational range of parameters that are measured, standards for measurement accuracy.
2.4. Draws up schedules of state checks for exemplary devices.
2.5. Carries out for the needs of the subdivision of the development of non-standard measuring instruments.
2.6. Takes measures to provide workplaces with technical equipment, necessary materials and documentation.
2.7. Participates in the work on studying the market of materials, reducing the cost of production (work).
2.8. Monitors compliance by laboratory workers with industrial and labor discipline, their compliance with rules and regulations on labor protection.
2.9. Supervises laboratory staff.
2.10. Knows, understands and applies the current regulatory documents relating to its activities.
2.11. Knows and complies with the requirements of normative acts on labor protection and environment, complies with the norms, methods and techniques for the safe performance of work.
3. Rights
3.1. The head of the laboratory of instrumentation and automation has the right to take actions to prevent and eliminate the occurrence of any violations or inconsistencies.
3.2. The head of the laboratory of instrumentation and automation has the right to receive all social guarantees provided for by law.
3.3. The head of the laboratory for instrumentation and automation has the right to demand assistance in the performance of his official duties and exercise of rights.
3.4. The head of the laboratory of instrumentation and automation has the right to demand the creation of organizational and technical conditions necessary for the performance of official duties and the provision necessary equipment and inventory.
3.5. The head of the laboratory of instrumentation and automation has the right to get acquainted with the draft documents relating to his activities.
3.6. The head of the laboratory of instrumentation and automation has the right to request and receive documents, materials and information necessary for the performance of his duties and instructions of the management.
3.7. The head of the laboratory of instrumentation and automation has the right to improve his professional qualifications.
3.8. The head of the laboratory of instrumentation and automation has the right to report all violations and inconsistencies identified in the course of his activities and make proposals for their elimination.
3.9. The head of the laboratory of instrumentation and automation has the right to get acquainted with the documents defining the rights and obligations of the position held, the criteria for assessing the quality of performance of official duties.
4. Responsibility
4.1. The head of the laboratory of instrumentation and automation is responsible for non-fulfillment or untimely fulfillment of the tasks assigned to this job description obligations and (or) non-use of the granted rights.
4.2. The head of the laboratory of instrumentation and automation is responsible for non-compliance with the rules of internal labor regulations, labor protection, safety, industrial sanitation and fire protection.
4.3. The head of the laboratory for instrumentation and automation is responsible for disclosing information about the organization (enterprise/institution) that is a trade secret.
4.4. The head of the laboratory of instrumentation and automation is responsible for non-fulfillment or improper fulfillment of the requirements of the internal regulatory documents of the organization (enterprise / institution) and the legal orders of the management.
4.5. The head of the laboratory of instrumentation and automation is responsible for offenses committed in the course of his activities, within the limits established by the current administrative, criminal and civil legislation.
4.6. The head of the laboratory of instrumentation and automation is responsible for causing material damage to the organization (enterprise / institution) within the limits established by the current administrative, criminal and civil legislation.
4.7. The head of the laboratory of instrumentation and automation is responsible for the misuse of the granted official powers, as well as their use for personal purposes.
Instruments for measuring gas pressure
Requirements for the installation of gas burners
Distance from projecting parts gas burners to walls, other parts of the building or equipment should be at least 1 m horizontally.
To ignite the burners and monitor their operation, viewing holes with covers are provided.
Gas burners should be connected to the gas pipeline with a rigid connection.
Pressure is measured using pressure gauges different types and designs.
1. U-shaped liquid manometer - used to measure overpressure, vacuum (draft) and pressure difference.
Consists of a glass tube into which liquid is poured. Pressure or vacuum is determined by the ruler scale.
2. Pressure gauges that use the deformation of sensitive elements are used to measure excess pressure, vacuum (thrust). These gauges are divided into:
a) spring - a spring is used as a working body, to the fixed end of which the measured pressure is supplied, and the second, soldered, end is connected to an arrow or pen using a lever mechanism. Pressure or vacuum is determined by a scale;
b) membrane and bellows - differ from spring only by the working body.
- the accuracy class must be at least 1.5;
- at operating pressure, the arrow should be in 2/3 of the scale;
- the case, glass, scale and pointer must be undamaged;
- the scale should be well lit, the readings are clearly visible;
- it is obligatory to have a seal or stamp on metrological verification;
- opposite the maximum working pressure on the case or scale, a red line must be applied;
- a three-way valve is installed in front of the pressure gauge to check, purge and turn off the pressure gauge.
Defects with which instrumentation is not allowed for operation:
– there is no seal or stamp on metrological verification;
– the term of metrological verification is overdue;
- appliances with mechanical damage;
- the arrow does not return to the zero mark of the scale when turned off.
Examination:
- service personnel using a three-way valve by setting the pressure gauge to zero - when starting a shift;
- by the owner of the enterprise - by a control pressure gauge at least once every 6 months. The results are logged.
Verification - by a verification laboratory:
- pressure gauges and thrust gauges - at least once every 12 months with sealing or branding;
- gas analyzers - 1 time in 6 months, if the manufacturer has not set other terms.
For liquid manometers it is necessary to clean the tubes and top up the liquid at least once every 3 months. The integrity of the glass tube, the connecting hose, the presence of liquid in the pressure gauge, the condition of the scale are checked.
Leak testing of impulse lines and stop valves carried out during inspections and technical surveys.
Operation of the equipment with disabled instrumentation is prohibited. Devices removed for repair or verification are replaced.
Technical activities carried out by the enterprise, in addition to work related to the introduction of new and replacement of obsolete instrumentation and control equipment, are divided into unscheduled and scheduled preventive work.
Unscheduled work is mainly reduced to prompt repair or replacement of failed measuring and automation equipment.
Planned preventive work consists of:
— current repair (TR);
— verification/calibration of measuring instruments.
Maintenance of instrumentation
TO includes the following types of work:
1. Technical inspection (external inspection, cleaning of dust and residues of technological products, inspection, cleaning and tightening of the terminals, revision of the kinematics and its lubrication, checking the tightness of the connection of pipe lines and the serviceability of remote data transmission devices, the safety of pipes);
2. Checking the performance, checking by control points (setting to "zero"), identifying and eliminating minor defects that have arisen during operation;
3. Replacing charts, cleaning recorders and filling them with ink, lubricating movement mechanisms, filling or replacing special fluids, eliminating their leaks;
4. Checking the operation of automation equipment in the event that a discrepancy is found during the technological mode and the readings of measuring instruments;
5. Rinsing of measuring chambers, fixing seals and fasteners, checking selective pressure and flow devices, drying elements of measuring and automation equipment and cleaning contacts;
6. Removal of measuring instruments and automation for repair and their timely submission for verification;
7. Verification of power sources, indicating and recording units of measuring instruments for analyzing the composition and properties of substances and materials;
8. Cleaning, lubricating and checking relays, sensors, executive mechanisms, regulators of all systems and purposes, checking for tightness and tightness of impulse and connecting lines, replacing faulty individual elements and assemblies, testing them in operation;
9. Checking the availability of power (electric, pneumatic, etc.), its quality parameters in control circuits, signaling, blocking and protection, testing sound and light alarms;
10. Checking the operation of circuits and the correctness of setting the settings for their operation and other checks related to the features of specific circuits;
11. Inspection of automation boards, blocking devices, signaling and protection means.
Maintenance work is carried out by the personnel of the enterprise and contractors. Individual operations can be performed by operational (technical) personnel. Works on maintenance of automation equipment are carried out by personnel together with the services of mechanics and power engineering.
Current repair of instrumentation and automation
Current repairs may include part of the maintenance work and additional work, namely:
1. Replacement of elements of measuring and automation equipment that have expired, elimination of minor breakdowns;
2.Partial disassembly and adjustment of moving systems, repair or replacement of damaged parts (springs, tubes, screws, fasteners), cleaning and lubrication of units;
3. Checking the quality of insulation and the state of the measurement and power circuits of measuring and automation equipment;
4. Partial disassembly and assembly of measuring systems with the replacement of individual unusable parts (rings, screws, arrows);
5. Correction of seals, elimination of backlashes in individual mechanisms, stuffing of glands, replacement of glasses, scales;
6. Elimination of faults in the articulation of moving parts, checking the operation of vibration transducers, amplifiers, electric motors, moving contacts and mercury switches, setting up the regulating part of measuring and automation equipment.
At current repair the measuring part of the measuring instruments, they must be verified.
Major overhaul of instrumentation and automation equipment
Overhaul of measuring and automation equipment may include part of the work provided for the current repair, and additional work:
1. Installation and adjustment of scales or dials; repair of hulls with straightening of mounting surfaces; complete disassembly and assembly of the measuring part and individual units and measuring instruments, washing, repair and replacement of parts (thrusts, springs, hangers, weights, corrector, etc.), significant repair of units of measuring and automation equipment or their complete replacement;
2. Verification of the measuring circuit of measuring instruments, adjustment and adjustment of instrument readings according to control points, preparation of measuring instruments for delivery to the verifier;
3. Disassembly and assembly of measuring instruments recording mechanisms, their revision, cleaning and replacement,
4.Repair of relays, sensors, actuators, regulators of electrical and electronic equipment or replacing them with more advanced ones; rewiring of circuits, replacement of failed impulse lines and electrical wiring in control, signaling, blocking and protection circuits.
Repair of measuring and automation equipment is carried out, as a rule, during a shutdown and repair technological equipment.
The shutdown of technological equipment can be emergency and planned.
During an emergency stop, work is performed that cannot be performed during operation of the equipment. At the same time, those units of automation equipment are subject to maintenance and repair, the serviceability of which was in doubt during the operation of process equipment.
During a planned shutdown after a shutdown, those measuring and automation tools, cable and pipe wiring, which are located near the process equipment and can be damaged during its repair, are dismantled.
Repair is carried out by specialized units of the enterprise or organizations that have: a registration certificate for the right to repair measuring instruments, issued by the bodies of the State Standard; means of verification (exemplary and auxiliary measuring instruments, fixtures, devices, etc.); personnel trained and authorized to carry out repairs and verification; necessary regulatory and technical documentation, verification schemes; premises that ensure the correct repair and verification in accordance with regulatory requirements.
When repairing, first of all, work is carried out that cannot be performed on working equipment. For example, repair of selective devices, regulatory bodies, narrowing devices, etc. Secondly, they perform work, the implementation of which on existing equipment is associated with significant difficulties or danger. In the third place, they carry out repairs of systems and means of measurement and automation, on which there is no operational reserve and the rest.
Instrumentation verification
Verification is understood as a set of operations carried out in order to establish the compliance of the metrological characteristics of measuring instruments with GOSTs or the technical specifications of the manufacturer.
Verification of measuring instruments, as well as other forms of metrological supervision, is regulated by the state standard.
Metrological supervision in our country is carried out by the state metrological service of Gosstandart and departmental metrological services through verification of measuring instruments, metrological revision and metrological examination.
Verification, depending on the purpose of the verified measuring instruments, can be state and departmental.
State verification at enterprises is subject to measuring instruments used in the bodies of the departmental metrological service as exemplary; belonging to the enterprise and used as exemplary bodies of the state metrological service; measuring instruments used after repairs performed for third parties; used for measurements related to accounting for material values, mutual settlements, protection of the health of workers and ensuring safety and health at work.
Measuring instruments that are not subject to state verification are subject to departmental verification.
Verification is carried out only by the bodies of the metrological service or organizations that have a registration certificate for the right to verify specific measuring instruments.
A registration certificate for the right to check and the right to repair is issued to the territorial bodies of the State Standard on the basis of an application from the enterprise. Attached to the application: a copy of the regulation on the metrological service of the enterprise, approved and agreed in the prescribed manner; a copy of the order on the appointment of the chief metrologist of the enterprise; certificate of the enterprise on the availability of qualified personnel entitled to carry out repairs and verification, on the availability of premises, exemplary measuring instruments, documentation, diagrams.
After checking the certificate, the territorial authority draws up an act and issues a certificate for the right to repair and verify the measuring instruments specified in the certificate for a period of 5 years. The certificate indicates the right to carry out repairs and verification only for yourself or for yourself and third parties.
A change in the certificate of the nomenclature of measuring instruments for the right to repair and verification is issued on the basis of a newly submitted application in the same manner.
Persons who have undergone special training and passed exams in educational institutions Gosstandart, who passed external examinations in the bodies of the state metrological service, which were entrusted by Gosstandart with attestation of verification officers; passed the exams of the commission formed by the head of the enterprise with the participation of a representative of the state metrological service body, according to programs agreed with this body.
An enterprise that does not have a registration certificate is serviced by the basic metrological body of its industry, or submits measuring instruments for verification to the bodies of the state metrological service. When sending measuring instruments to these bodies, a passport for them, a description, and the last verification certificate are submitted.
When the bodies of the metrological service carry out verification at the enterprise, the latter provides the premises, equipment and support personnel necessary for verification. The presented equipment (calibration facilities, exemplary measuring instruments, etc.) must be stored by the enterprise under the seal of the metrological service authorities and used only with their permission.
Measuring instruments must be subject to primary periodic, extraordinary and inspection verification.
Primary verification is carried out when measuring instruments are released into circulation from production and repair.
Periodic verification is carried out during the operation of measuring instruments and storage at certain calibration intervals.
The frequency of verification is established: for measuring instruments subject to state verification, by the State Standard or the body of the state metrological service; for measuring instruments subject to departmental verification, by the chief metrologist or the head of the departmental metrological service.
When establishing the frequency, the stability of readings, operating conditions, and the degree of workload of measuring instruments are taken into account. For example, at food industry enterprises, measuring instruments that are in operation are calibrated, as a rule, once a year. Potentiometers, bridges, electrical measuring instruments are checked every 6 months.
The terms of verification are displayed in the annual calendar charts separately for measuring instruments submitted to the departmental bodies of the metrological service, separately to the state ones. Schedules are coordinated with the heads of these bodies.
Interverification intervals for measuring instruments in storage are:
a) for measuring instruments received for storage after being released from production, no more than the warranty period;
b) for measuring instruments that were in operation, no more than twice the calibration intervals established for similar measuring instruments in operation.
Measuring instruments that are in long-term storage may not be subject to periodic verification. Verification in this case is carried out before installation.
Extraordinary verification is carried out:
1. During operation or storage, regardless of the timing of periodic verification, if necessary, make sure that the measuring instruments are in good condition;
2. When commissioning imported - measuring instruments;
3.When adjusting the calibration intervals;
4. When installing measuring instruments as components after half of the warranty period;
5. In case of damage to the verification mark, seal, loss of the document with the registration of the last verification;
6. When commissioning directly from the warehouse after storage or after transportation.
Inspection verification is carried out to establish the serviceability of measuring instruments during a metrological audit at enterprises, warehouses, bases.
A metrological audit is carried out by the bodies of the state metrological service to determine the compliance of measuring instruments and measurement methods used at the enterprise with modern requirements.
Enterprises carrying out repair, storage, operation of measuring instruments are subject to audits. At the same time, at the enterprises carrying out operation, the following should be checked: the availability of technical documentation, which specifies the requirements for measuring instruments; availability of means and methods for measuring technological processes, quality control of products, accounting material assets etc.; correct installation of measuring instruments, their installation, application; compliance with operating conditions; serviceability; organization of the metrological service (structure, availability of personnel, their training, availability of equipment, premises, compliance of the work performed with the registration certificate); availability and correctness of documentation, its coverage of all measuring instruments “in operation; availability of exemplary measuring instruments, their condition and application in accordance with the requirements of regulatory documents; fulfillment of the proposals given during the previous audit.
PURPOSE
SIKN (SIKNS) are intended for automatic measurement of mass (volume) of oil; quality indicators of oil (density, viscosity,
on the computer and its subsequent display on the automated workstation of the operator (workstation of the operator).
SIKN (SIKNS) are manufactured on the basis of volumetric,
mass or ultrasonic flow transducers.
In the general case, functionally the SIKN (SIKNS) consists of the following elements:
Filter block (BF);
Block of measuring lines (BIL) or (BIL with filters on measuring lines);
Unit for measuring oil quality indicators (BIC);
Calibration Unit (BPU);
Information processing system (ISP).
SICN layout example
Figure 4. Block layout module SIKN. LLC NPP NGI.
Figure 5. B-B measuring line block. LLC NPP NGI.
b) 
Figure 6. Block for measuring oil quality parameters. (a,b).
PURPOSE:
BIL are designed to measure flow
and control of oil parameters with subsequent
transfer to the information processing system
Number and diameter of measuring lines
determined by calculation, depending on
from the maximum flow rate through the SIKN and type
applied flow converters.
The block of measuring lines includes:
Mass or volume flow converters;
Outlet and inlet manifolds, piping with shut-off valves;
Pressure and temperature sensor;
Manometers and thermometers;
Flow regulators;
Laboratory (site) instrumentation and automation.
Instrumentation and control laboratory is designed for verification of various measuring transducers in automatic mode, reproduction of active resistance signals direct current, smooth change of reproducible electrical signals.
Work in the laboratory contributes to the formation of skills in research and experimental work.
The speed and ease of working with laboratory instruments makes them indispensable not only for verification, but also for operational diagnostics and control of instrumentation and automation equipment.
Laboratory modules allow you to study the parameters of systems and
speed control of motors, motor current and torque control, voltage control, operation of systems with servo control and positioning.
Autonomous modules allow you to conduct experiments and solve technical problems for the control and regulation of various systems, including the use of ultrasonic, fiber-optic, analog sensors
2.1. Section of control cabinets and automated process control systems and instrumentation.
One of the activities of the company is the assembly of control cabinets, the supply of equipment and instruments for automation and dispatching of complex technological systems.
NPP NefteGazEngineering LLC assembles electrical control cabinets of any complexity.
APCS of well pads (pad remote control) is an automation system designed to transmit information necessary for remote monitoring and control of distributed and remote objects (well pads).
Automatic analysis, collection and transfer to a higher management system of information about the state of the process, equipment, emergency events and results;
Visualization of the technological process and the results of processes;
- emergency protection, operation diagnostics, timely transmission of information to the operator about emergency events;
-automated process control at all levels;
-formation of reports and graphs on request, generation
The proposed system provides:
Adaptation of the system to well clusters of any complexity;
Usability various types communications for data transmission using modern technologies such as optical fiber, radio communication, cellular and satellite communication channels, etc.;
Reducing the cost of operating and service maintenance, reducing the number of staff;
High reliability and noise immunity provided by modern technologies, constant automatic monitoring of the state of equipment and processes;
Automatic registration of emergency events in technological process, an indication of the causes and place of incidents;
-optimum ratio price/quality + opportunities.