PPR of gas supply of residential building

Contents

Cover Sheet

2 Task

3 Contents

4 Composition, assignments and justification of the PPM project

4.1 Technology and ways to improve it

4.2 Selection of method of works execution

4.3 Selection of driving machines and mechanisms

4.4 Material and Auxiliary Quantities List

4.5 Calculation of labor costs and wages

4.6 Labor Cost Summary Sheet

4.7 Calculation of the numerical and qualified composition of the brigade

4.8 List of tools and accessories for the brigade

4.9 Work Execution and Working Movement Schedule

forces

4.10 Instructions for performance of works

4.11 Preparatory works

4.12 Gas pipeline installation technology

4.13 Welding operations

4.14 Insulation works

4.15 Gas Pipeline Tests

5 Operation of gas facilities

5.1 Commissioning of the facility

(Acceptance Certificate for Construction Facility)

5.2 Tie-in of the gas pipeline to the existing network

5.3 Operation of gas pipeline systems

5.4 Maintenance and overhaul

6 Emergency dispatch service

7 Occupational safety and safety

7.1 Safety Precommissioning and Installation

works

7.2 Welding Safety

7.3 Safety precautions for gas pipeline and insulation testing

works

List of literature

4. Composition and justification, purpose of work execution project (WP):

The WDP is designed to determine the most effective methods for performing installation work, which contribute to reducing the cost, labor intensity, reducing the time for performing work, improving the quality of installation and ensuring labor safety .

The PWP is a guiding document for the organization of works on the installation of gas supply systems and is developed by specialized departments or an installation organization; approved by the chief engineer of the installation control and agreed with the customer and the general contractor.

The work execution project includes:

- organization of preparatory works, including preparation of applications for gas equipment and materials, as well as orders for manufacture of units of gas supply systems;

- installation design;

- determination of storage places of materials and products;

- determination of process sequence, methods and methods of installation;

- ensuring uninterrupted performance of works, reduction of their cost and labour intensity;

- increase of installation quality, reduction of labour intensity of production processes;

- Occupational safety.

All activities on the project of work performance and safety are developed on the basis of the current regulatory documents:

- SNiP 42012002 "Gas distribution systems";

- SP 421012003 "Code of Rules for Design, Installation and Operation of Gas Supply Systems";

- PB 125292003 "Safety rules for gas distribution and gas consumption systems";

- SNiP 3-4-80 "Safety in construction";

- "Rules for arrangement and safety of lifting machines operation. Gosgortekhnadzor 2003 ";

- Fire safety rules, during works (welding and other fire works) at facilities;

- Typical Job Instructions. Gosstroy of Russia;

- Instructions for development of work execution projects.

4.1 Technology and ways to improve it.

The technology is called a strictly defined sequence of work, corresponding to the highest performance, safety.

The technology is part of the civil technology and is closely related to it in terms of time and sequence of work. Improvement of technology provides for reduction of labor costs, improvement of appearance and operational qualities.

The main ways of improving technology are: industrialization, mechanization and constant improvement of the organization of production.

The technology provides for the constant employment of workers and the sequence of works exclusive excluding alteration of previously performed works.

The procedure for installation of gas distribution and gas consumption systems consists of the following sequential processes:

- preparatory works;

- earthworks;

- assembly and assembly works;

- test;

- final works.

4.2 Selection of method of works execution.

Installation of gas distribution and gas consumption systems is carried out using the following methods: sequential, parallel and in-line .

This project uses a sequential method.

Sequential method - when gas workers start work after the completion of general construction work.

With this method, the terms of work are reduced; installation quality is maintained; performed under safety conditions; there is no through wind in the house, since all the windows have been installed by the time of installation, only one window has been left for the crane to supply blanks and equipment to the floor, and the blanks are preserved.

By this method, the installation of the internal gas supply of a residential building is carried out.

4.10 Instruction on Work Execution

All works on the construction of the gas pipeline are divided into

preparatory, earthen, welding, insulation, final.

The construction of the gas pipeline begins only after receiving from the general contractor approved design and estimate documentation with all changes and approvals, as well as a breakdown estimate and permission to carry out work from the city gas service. Prior to commencement of works, the gas pipeline layout and the certificate for the corresponding geodetic works shall be performed. The breakdown diagram can be drawn up by the design organizations or the installation control ITP.

Permission for earthworks must be obtained before the works can be carried out. Permission to perform work is issued by the administration of the settlement and the organization entrusted with the right to operate these gas pipelines with the indication of the terms of work, as well as the position and name of the persons responsible for the work. Permission for earthworks is issued upon approval of all organizations of underground communications, as well as the traffic police.

4.11 Preparatory works.

The team begins to install gas supply systems after the completion of preparatory work, which contributes to high-quality and accident-free work. Preparatory works are started after acceptance of the object for installation, with indication of preparatory works objects.

Preparatory work includes:

- markup

- unloading

- picking and posting to installation places

Markup. Performed by a representative of the production preparation area or the planned technical department (surveyor of the 6th category). At the places of supports and walls of the external gas pipeline, marks are made with paint. The marking of the gas pipeline shall be executed by an act and signed by the project organization, customer and contractor.

Equipment and pipes shall be unloaded to a special material storage site. Picking and posting to installation places is performed.

Welding units, compressor, bitomaking boiler and other equipment are brought in.

Connection of equipment to power supply and water supply. Most equipment and tools operate on electric current, hence it is necessary to connect to electric generators driven from the LAN or to stationary transformers.

4.12.Technology of gas pipelines installation.

Work on the installation of the gas pipeline is carried out by a team of gas engineers. They are trained in workplace safety. Pipes, equipment, materials are checked for compliance with the project.

Prior to assembly of pipes for welding, their outer and inner surfaces are cleaned from possible clogging. Lifting to supports and struts is performed by means of crane.

The gas pipeline passing through the walls of the building consists of a case. Installation of the gas pipeline running along the wall begins with marking of the installation of fasteners on the wall, lifting of the gas pipeline to supports, mounting scaffolds are used for welding at height.

During welding of shaped parts, assemblies, fittings and other devices into the gas pipeline, alignment of the screwed-in elements with the gas pipeline must be ensured. Distortions are not allowed.

Installation of internal gas equipment shall be performed only after performance of the following works:

- arrangement of intermediate floors, walls, floors, partitions on which gas pipelines, valves, gas equipment and instruments will be installed;

- arrangement of holes of channels and furrows for laying of gas pipelines in walls, partitions, ceilings;

- plastering of walls in kitchens and other rooms where installation of gas equipment is provided;

- installation of baths, washes, sinks, washbasins or other devices to which pipelines are supplied from gas equipment.

Deviation of risers and rectilinear sections of gas pipelines from the design position is allowed not more than 2 mm per 1 m of the gas pipeline length, if other norms are not justified by the design. If there is no data on the distance between the pipe and the wall in the project, this distance must be at least the pipe radius.

During installation of disconnecting devices (cranes), it is necessary to provide after them (counting in the direction of gas) installation of ramps.

Cranes on horizontal and vertical gas pipelines shall be installed so that the axis of the crane plug is parallel to the wall. Installation of a stop nut against the wall is not allowed.

It is allowed to lay the gas pipeline to the plate at the level of connection connector. At the same time, the disconnecting valve should be installed at a distance of at least 20 cm from the side of the plate.

During upper wiring the disconnecting valve must be installed on the bottom to the plate at a height of 1.51.6 m from the floor

4.13 Welding operations.

Welding works are carried out by the welder of the fifth category, who has a tolerance for gas hazardous works and has passed a tolerance seam.

The welder is given a stigma that he places at a distance

50-100 mm from the weld. Electrodes and other materials are subject to mandatory certification.

Before assembling welding pipes, the joint edges must be cleaned to pure metal. Pipes having slabs, cracks, bevels of chamfers more than 5 mm should be trimmed.

Welding of pipes is carried out on inventory liners using external or internal centralizers.

Mounting scaffolds are used for height welding.

For arc welding of pipes, electrodes shall be used as per SNiP 3.05.0288 gas supply, as per GOST 946775; GOST 946675.

Manual arc welding of non-rotating and rotary joints of pipes at wall thickness up to 6 mm shall be performed in at least two layers.

Welding work in the open air during rain, snowfall, fog and wind at a speed of more than 10 m/s can be carried out only if the welding site is protected from moisture and wind.

4.14. Insulation works.

Above-ground gas pipelines should be protected against atmospheric corrosion by paint coatings consisting of two layers of paint, enamel and lacquer, which withstand temperature changes and the effects of atmospheric precipitation.

For coating, a ready-made hot mastic (primer) is used and delivered to the tracks in specially equipped containers with tightly closed

covers. If bitumen mastic is made at the site, the following conditions must be met: cooking and heating of bitumen mastic is allowed only on designated storage areas, which must be removed from wooden buildings and from warehouses by at least 40 m, and from the trench - by at least 15 m. Boilers for cooking or heating mastic are firmly fixed and equipped with tightly closing covers. It is allowed to fill boilers by not more than% of their capacity. A non-combustible canopy is installed above the boiler, and a set of fire extinguishers, shovels and dry sand must be constantly located near the boiler.

If the primer (primer) is made at the place of work, then the distance from the place of its manufacture to the place of heating of bitumen (and to open fire in general) should be at least 40 m.

When mixed, heated bitumen is poured into gasoline (and not vice versa), and mixed with wooden stirrers. The temperature of bitumen at the time of preparation of the primer should not exceed 70 degrees Celsius.

Tanks, tanks and bidons for primer preparation are supplied with hermetic covers. When the mastic is ignited, the boiler should be closed with a cover, immediately stop the furnace, fill the outgoing mastic with sand or use a fire extinguisher. It is impossible to fill burning bitumen or mastic with water, since the resulting steam can throw the mastic out of the boiler and increase the source of fire. Heated masks should be delivered to workplaces in conical tanks closed by the cover, widened downwards and filled by no more than 3/4 of the volume. The splashing of bitumen or mastic during transfer in such tanks is exclusive.

All gas pipelines inside the buildings must be painted yellow, or gas pipelines can be painted with the color of the building facade.