How to make a schedule PPR of electrical equipment?

How to draw up an annual maintenance schedule for electrical equipment? I will try to answer this question in detail in today's post.

It's not a secret for anyone that the main document according to which the repair of electrical equipment is carried out is the annual schedule of preventive maintenance of electrical equipment, on the basis of which the need for repair personnel, in materials, spare parts, and components is determined. It includes each unit subject to overhaul and current repair of electrical equipment.

To draw up an annual preventive maintenance schedule (PPR schedule) of electrical equipment, we need standards for the frequency of equipment repair. These data can be found in the manufacturer's passport data for electrical equipment, if the plant specifically regulates this, or use the reference book "System of maintenance and repair of power equipment". I am using the reference book of 2008, therefore, further I will refer to this source.

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So. There is a certain amount of power equipment on your farm. All this equipment must be included in the PPR schedule. But first a little general information what is the annual PPR schedule.

Column 1 indicates the name of the equipment, as a rule, concise and understandable information about the equipment, for example, name and type, capacity, manufacturer, etc. Column 2 - number according to the scheme (inventory number). I tend to use numbers from electrical one-line diagrams or from technological ones. Columns 3-5 indicate the resource standards between major repairs and current ones. Columns 6-10 indicate the dates of the last major and current repairs. In columns 11-22, each of which corresponds to one month, symbol indicate the type of planned repair: K - capital, T - current. Columns 23 and 24, respectively, record the annual downtime of equipment in repair and the annual fund of working time. Now that we have considered general provisions on the PPR schedule, consider a specific example. Suppose that in our electrical facilities, in building 541, we have: 1) a three-phase two-winding oil transformer (T-1 according to the scheme) 6 / 0.4 kV, 1000 kVA; 2) pump electric motor, asynchronous (designation according to the scheme Н-1), Рн = 125 kW; Step 1. We enter our equipment into the empty form of the PPR schedule.

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Step 2. At this stage, we determine the resource standards between repairs and downtime. a) For our transformer: open the reference book page 205 and in the table "Standards for the frequency, duration and labor intensity of repairing transformers and complete substations" we find a description of the equipment that fits our transformer. For our capacity of 1000 kVA, we select the values ​​of the frequency of repairs and downtime during major and current repairs, and write them down in our schedule.

b) For an electric motor according to the same scheme - page 151 Table 7.1 (see figure).

The found standards in the tables are transferred to our PPR schedule

January 2005 "href =" / text / category / yanvarmz_2005_g_ / "rel =" bookmark "> January 2005, current - January 2008. For the H-1 pump engine, capital - September 2009, current - March 2010. Submit this data into a graph.

January 2011 "href =" / text / category / yanvarmz_2011_g_ / "rel =" bookmark "> January 2011, it is for this year that we draw up a schedule, therefore, in column 8 (January) for the T-1 transformer we enter“ T".

September 2015 "href =" / text / category / sentyabrmz_2015_g_ / "rel =" bookmark "> September 2015. The current one is held 2 times a year (every 6 months) and, according to the last current repair, we plan for March and September 2011 An important note: if the electrical equipment is newly installed, then all types of repair, as a rule, "dance" from the date of putting the equipment into operation. Our schedule takes the following form:

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An important note: at some enterprises, power engineers in their annual PPR schedules, instead of the last two graphs of annual downtime and annual fund, indicate only one column - “Labor intensity, person * hour”. This labor intensity is calculated by the number of pieces of equipment and the labor intensity norms of one repair. This scheme is convenient when working with contractors performing repair work. Do not forget that the dates of repairs must be coordinated with the mechanical service and, if necessary, the instrumentation service, as well as with others. structural divisions directly related to the repair and maintenance of related equipment. If you have any questions about drawing up an annual PPR schedule, ask questions, I will try, if possible, to answer them in detail.

Distribution of personnel by groups

After choosing the form of service and the structure of the electrotechnical service of the economy, the distribution of electricians and engineers and technicians by structural units is carried out.

The required number of personnel in the maintenance and repair teams or service areas is determined by the formula.

where N x is the number of personnel in the group (at the site, people);

T i - annual labor costs for performing the I-th type of work in a group (on a site), people · h;

The number of personnel in the operational (duty) group is determined.

where K D - coefficient equity participation labor costs for operational (duty) maintenance in the planned costs for maintenance, repairs, gas stations

(K D = 0.15 .... 0.25).

The number of personnel in the repair group is determined as

where N rem - the number of personnel in the repair group (people);

Т i - annual labor costs for repairs, people · h;

F D - the actual fund of working time for one worker, h.

The number of personnel in the maintenance group is determined

When distributing personnel, it should be borne in mind that, according to the requirements of safety rules during the operation of electrical installations of consumers, at least two electricians must be assigned to each site (object), one of whom is appointed as a senior.

The total number of electricians in groups (at sites) of the electrical service, determined by labor costs (without major repairs), should not differ sharply from the total number of electricians, determined by the average load.

Electrical maintenance scheduling

Requirements for PM and maintenance schedules

The basis for organizing work on the operation of electrical equipment is monthly, quarterly and annual schedules of maintenance and repair. When developing them, consider the following:

The dates of the TR of electrical equipment should be combined with the dates of the repair of the machines on which it is used;

It is advisable to repair electrical equipment used seasonally before the period of its intensive use;

The planned duration of the work must correspond to the category of complexity of the electrical equipment;

The time for the transitions of electricians to service facilities during the working day should be reduced as much as possible;

The entire working day of electricians should be filled with work as much as possible.

The procedure for scheduling maintenance and repair

Graphing is done in the following order:

1. A worksheet is developed, on the basis of which a monthly schedule of planned preventive repairs... The working tables (Appendix 1) provide a list of electrical equipment of individual production units farms (complex, farm, mechanical repair shops, subsidiary enterprises, etc.) with an indication of the timing of the installation of equipment, the last major, current and emergency repairs, maintenance. Each piece of equipment is shown on a separate line.

Maintenance planning starts with a more complex view, i.e. with a major overhaul, then routine repairs are planned and, in the last turn, the time for maintenance is set.

The term for a particular type of PM is determined by the frequency and date of its last performance. If the days of the repairs fall on Sundays (Saturdays) or pre-holiday days, then the repairs are postponed to a later or earlier date

If the dates of the maintenance, repairs or repairs coincide, a more complex type of repair is planned. The calendar days for the overhaul of equipment are set depending on the specific conditions of the farm or the involved organization. The timing of the subsequent maintenance and repair work is determined by the frequency of their implementation. If the frequency of scheduled preventive maintenance or maintenance is violated, their implementation is planned at the beginning of the month.

The type of repair (overhaul, current) or maintenance is indicated in the columns calendar days respectively with the letters КР, ТР or TO. Weekends (H) and holidays (P) are also marked in the table.

2. On the basis of the data of the worksheet, a monthly schedule of the PPR is drawn up (Appendix 2). Using data on the labor intensity of maintenance and repairs, the labor costs of electricians are determined by day to complete the planned volume of work. The cost of overhaul is not taken into account if this type of repair is performed by a third-party organization.

In some cases: with the territorial scattering of units and low labor costs to perform maintenance (0.5-1 h) and current repairs (2-8 h); with a lack of means of transporting workers, the frequency of routine repairs and maintenance can be neglected. At the same time, planning is carried out on the basis of: a full shift load of electricians (at least two people) and a minimum violation of the terms of the PM. It is not advisable to violate the periodicity of the PPR of electrical equipment operating in conditions of ammonia release in damp rooms.

Schedules for the following months are drawn up in the same way.

3. On the basis of monthly schedules, quarterly and annual ones are drawn up (Appendix 2).

When drawing up general schedules PPR for all divisions of the economy must be monitored so that there is no overlap of the timing of work at various facilities for the same services. Once the schedules have been drawn up, they are carefully checked.

To ensure continuity technological processes Maintenance and repair of electrical equipment is carried out during technological breaks. Performance maintenance electrical equipment is planned simultaneously with the current repair of technological equipment. Seasonal maintenance and repairs, as well as overhaul of electrical wiring of livestock buildings and grain flows are planned for the period of their downtime. These works must be completed before the start of the season of use of the production facility.

At the same time, the schedule should ensure: uniform workload of electricians throughout the day, month and year; minimal loss of time for the transition and travel between objects; compliance with the standardized frequency of preventive measures (deviations should not exceed ± 35%).

When organizing planning and scheduling, network scheduling is used.

Network planning and management includes 3 main stages:

1.Developed network schedule, which reflects the whole complex of works, their relationship in a certain technological sequence, which must be performed to achieve the I set goal;

2. The network schedule is being optimized; selection of the resulting option;

3. Operational management and control over the progress of work. The order of building a network diagram:

a list of works is drawn up;

a list of events is drawn up;

a rational technological sequence and relationship of work is determined;

the need for material and labor resources for each job is determined;

the duration of the work is set.

4.2 Drawing up a job identifier card for the network schedule.

Drawing up a job identification card is the first step in network planning. The identification card is drawn up according to the following data:

installation duration and completion dates;

the project for the production of electrical work and technological maps;

valid cards and prices for electrical work;

data on the duration of certain types of work based on practical experience.

The Chief Power Engineer Department works in close cooperation with the following departments:

capital construction;

chief mechanic;

marketing department;

planned and economic.

Maintenance personnel calculation

Chrem = Labor pp / Ffak

Chrem = 1986/1435 = 1.3 = 1 person

For safety reasons, we accept 2 people

Duty staff - around the clock

Shifts per day

I shift from 7 am to 4 pm

II shift from 16-23 o'clock

III shift from 23-7 hours

IV shift - weekend

5. Operation of electrical equipment.

5.1 System of preventive maintenance.

The PPR system is a complex of technical and organizational measures for the care, maintenance and repair of equipment, carried out in a planned manner and having a preventive nature.

This system is called a planned system because all activities are carried out according to a plan (schedule) within a predetermined time frame.

It is called preventive because, in addition to repair work, it includes preventive measures to prevent accidents and breakdowns. Such events include:

daily care;

equipment supervision;

overhaul service - checking for accuracy;

• washing and oil change.

PPR system

Overhaul

service

Flushing