1 scope
The technology standard is applicable to important rooms, libraries, archives and other buildings. Indoor fire USES halon gas fire extinguishing system pipeline and equipment installation works. Halon fire extinguishing agent have the characteristics of non-conductive, no pollution, but only in confined Spaces can achieve good effect.
2 construction preparation
2.1 material equipment requirements:
2.1.1 indoor fire gases (halon fire extinguishing equipment, steel, pipe, pipe fittings, all kinds of valves and accessory products and accessories, shall have the certificate of the factory and product certification. Into the scene, to do inspection before installation and use, the validation work, must comply with the relevant national standard, ministerial standard and fire supervision department regulations and requirements.
2.1.2 according to installation schedule after check in the amount of material, inspection specification, type, size, quality conformed to the drawings requirements.
2.1.2.1 galvanized carbon seamless steel pipe and pipe fittings:
A tube: adopt galvanized carbon seamless steel pipe or thickening galvanized carbon steel pipe, pipe wall inside and outside galvanized evenly, no rust, wall without reinforcement, wall thickness should comply with the design requirements. Choosing pipe, internal pressure should meet the design requirements.
B pipe fittings: the forging steel galvanized inside and outside, the galvanized layer surface evenly, no rust, unbiased clasp, wire, square buckle, wire buckle is not complete, the phenomenon such as Angle is incorrect. Especially the flange to internal and external galvanized, galvanized layer is complete, uniform water line, can not have fracture, the phenomenon such as sticking dirt.
2.1.2.2 non-ferrous metal pipes and pipe fittings: the seamless copper pipe and pipe fittings, pipe wall thickness uniform inside and outside, inside and outside tube skin smooth surface gloss, pipe fittings can not have the thread is not complete, Angle is incorrect, partial clasp, wire, etc.
2.1.2.3 valve: valve after the arrival of the goods, to do sampling test, should be no crack, casting beautiful, inside and outside the rules, flexible switch tightly and handwheel no damage.
2.1.2.4 equipment: halogenated gas cylinders, starting gear box and ancillary equipment and spare parts in the specification, type, size, quality must meet the design requirements, the equipment of spare parts should be complete, the surface neat appearance, no damage. To wear the cap and in the up-right position, impact, careful operation, are not allowed to put in direct sunlight and high temperature, there is danger etc nearby.
2.1.2.5 other materials: steel, round steel, pipe, fittings, pipe clamp, oil, packing, packing, electric welding, anticorrosive coatings shall comply with the design requirements, etc.
2.2 the main equipment:
2.2.1 equipment: sawing machine, sets of machine, bench drill, drill, nail gun, welding machine, air compressor, pipe bender, walkie-talkie, etc.
2.2.2 tools: tongs, pressure case, hand saw, hammer, adjustable tube support; Hacksaw, file, die, wrench, adjustable wrench; Oxygen cylinder, acetylene cylinder, oxygen gauge, pressure gauge, acetylene table, welding torch, cutting torch; The welding wire, electric welding pliers, wire cutting pliers, screwdriver; A hammer and chisel, pipe, etc.
2.2.3 measuring tool: the steel tape, flat feet, Angle square, oil standard caliper, level (level), line drop; White silk or paper, pencil, chalk, pencil, etc.
2.3 operation conditions:
2.3.1 hole, hole, slot, eye, planted all kinds of branch, hanging, card holder and the embedded iron, etc., should be timely cooperation progress to reserve, buries the civil engineering.
2.3.2 main installation: in each layer (section) the top of the main, in each layer (section) structure cap after installation; Located in the main floor, should be in after a layer structure; Located in the main inside condole top, best installed in front of the ceiling.
2.3.3 riser installation: should be performed after the good ground, if you need before apply to installation, must guarantee the accuracy of the horizontal line and ground surface elevation.
2.3.4 branch pipe installation: must be installed in after wiping the wall. Metope does not make plaster, branch pipe shall be carried out in blow be bored with child after installation.
2.3.5 halon gas cylinders, starting gear box should be stabilized after indoor metope, dado is done with fixed.
2.3.6 stent pipeline and equipment should be in place before decorate, steady.
2.3.7 other equipment should be finished inside decorate, after pressure testing, test for installation.
3 operation process
3.1 process:
Installation preparation to the reserved hole, hole, embedded iron pieces, pipes, pipe fittings, count and check equipment and accessories
, hanger production, installation and piping prefabrication to pipe installation, equipment support and installation
Collection of pipe and pipe fittings, selector valve installed to individual and system pressure testing, flushing - equipment, solid cylinders installed -
Assembly equipment accessories and pressure switch to brush oil pipe, nozzle installation and debugging
3.2 installation preparation:
3.2.1 familiar with drawings, carefully understand design intent, construction scheme is determined.
3.2.2 review reserve, buries the location, size, elevation.
3.2.3 position according to draw a line in the division of design drawings, pipe diameter, diameter variation, obligate mouth coordinates, elevation, slope direction and branch, the location of the hanger, a sketch, and will be recorded in the measurement of size; Tied for cross and pay attention to the smallest interval of lined pipe size.
3.2.4 shall be carried out in accordance with the sketch, piping prefabrication, processing after checking the size, number, colors and tidy. According to the requirements, hanging, card, frame installation.
3.2.5 will be shipped to the installation site, prefabricated piping and accessories according to the code in place, clean the pipe bore.
3.3 the reserved hole, hole and embedded iron:
3.3.1 in reinforced concrete floor slab, beam, the reserved hole, hole in the wall, should set up specialized personnel in accordance with the design drawings will be the location of the pipeline and equipment, coordinate, elevation measurement accuracy.
3.3.2 rainfall distribution on 10-12 cooperate the pay-off localization, scaling is high, the size. At the same time to solve the problem of construction of conflicting with related department.
Mark 3.3.3 hole, hole and embedded iron casting parts. To fasten on pre molding box in front of the banding steel, flexible opening box stuffing material. In the process of pouring concrete, should establish professional check and supervision, in order to avoid displacement and displacement, location, size and note the reinspection.
We do in case of shift, dislocation, need to take iron processing, must seek consent of the relevant departments, shall be performed.
3.4 equipment material inventory check:
3.4.1 track according to the requirements of design drawings, before installation, do specification, type, size, quality, etc of inventory verification, ensure the quality of quantity, comply with the design and installation requirements.
3.4.2 of visual is not easy to identify materials (valve) sent sample to laboratory testing.
3.5 a, hanger production installation:
3.5.1 track of bronchitis and hanger production:
Pipes, fittings choose materials shall, in accordance with requirements of the design drawing, the size, type, machining precision and welding shall comply with the design requirements.
The specific method see 1-1.
3.5.2, the installation of the hanger
3.5.2.1 pipe should be in a timely manner, hanger, hanger installation of fixed and adjustment work.
3.5.2.2 installation, the position of the hanger, elevation should be accurate and spacing should be reasonable. Should be in accordance with the requirements of design drawings, the standard rules for installation.
3.5.2.3 pipes are not allowed to displacement, fixed bracket should be set up. Must be installed strictly in the position of design rules, and shall make the pipe firmly fixed on the bracket.
3.5.2.4 embedded inside the wall of the stent, the framework of the welding on the embedded parts, use nail installation bracket, with expansion bolt installation bracket, should be in accordance with design drawings requirements for installation.
3.5.2.5 without hole, hole and embedded parts on concrete members, can choose nail or expansion bolt mounting bracket, but unfavorable installation thrust large fixed bracket.
3.5.2.6 adopting expansion bolt has without drill and drill two kinds, common specifications as M8, M10, M12, etc.
A mounting bracket without drilling bolts, must first hole on the position of the mounting bracket.
B to drill a hole must be vertical component surface. Are equal in the diameter of the hole and casing diameter, depth of casing add 15 mm length. Drill, the debris removal within the hole clean.
C to set on the bolt, casing pipe towards the open end of the tapered tail bolt; Then take the nut on the bolt. Then scored has drilled hole, into the nut contact orifice, tighten the nut with a wrench. With tighten nut, bolt of tapered tail will take open casing tail swelling, make the bolt fastening with casing in hole (figure l - 30).
3.5.2.7 when installing parallel pipeline, should pay attention to standardize pipe spacing arrangement.
3.6 precast processing:
3.6.1 pipe cutting: according to the drawings and the actual measurement of section size, draw sketch, calculating blanking pipe length, according to the sketch on the section after the draw the required block size, make tools at right angles to the pipe axis, cutting the vertical pipe, cannot use the machine tools, etc.
3.6.2 duct incision processing: all the pipeline slit must use file file into a smooth surface, remove the pipe inner and outer edge, burr, etc.
3.6.3 pipe inspection, cleaning, and the protection of the pipe end.
3.6.3.1 duct incision in front of the joint must be cleaning the remnant and pipe in the pipe mouth, both inside and outside of iron filings, etc.
3.6.3.2 is processed or piping job temporarily suspend, must use plug tube end sealing good, does not make the foreign body into the tube and pipe thread outside the mouth.
3.6.3.3 pipe before installation must clean the pipe inside the chamber and the thread outside the mouth.
3.6.4 radar echoes captured the precast processed section with good parts, straightening number into the appropriate position, to be installed.
3.7 pipe installation generally includes ZhuGanGuan, main and branch pipe, branch; Collection tube, pipe run installation. When installation, begin by the main line, other branch can in turn (FIG. L - 31).
3.7.1 main installation:
3.7.1.1 will check the pipeline prefabrication processed according to the loop number, to the installation site, scattered in number order placed in position. To determine the location of the main, elevation, slope, pipe diameter and diameter variation, etc., according to the size of fixed good, hanger.
3.7.1.2 erect pipeline connection pipe and pipe fittings can be on the ground first part assembly, length so that the hoisting is advisable. After lifting, light fell on the branch, hanger, card ring, prevent tumble hurt.
3.7.1.3 adopts welded pipes, pipe fittings, can be after the completion of all assembly, welding, but joint position should be on the ground when the assembly arranged, selecting appropriate place, so that the welding operation.
3.7.1.4 before welding, only by a heating dry electrode can be used (baking oven temperature of 70 ~ 70 ℃, 30 ~ 60 min), according to the moisture of the electrode, electrode cannot use already wet. Pay attention to remove pipe end dirt.
3.7.1.5 welding according to the standard operation. Selected according to different pipe and tube wall thickness of welding rod or solder wire type, diameter and operation posture, and adopt appropriate to welding current, voltage, welding speed (18) in table 1. When using electric welding machine, should consider its polarity according to the welding material conditions.
Current range selection table 1 to 18
Electrode (2.6 3.2 mm) in diameter
Long (350 mm) 350
Next to the 50 ~ 85 (A) 85 ~ 85 (A)
Current range
Set to
On the
3.7.1.6 correctly use groove Angle and pipe and pipe connection, there can be no dislocation welding.
3.7.1.7 in pipe welding parts and inside and outside surface of the tube and flange welding positions, coating and pipeline antiseptic agent with the same material.
3.7.1.8 using threaded pipe, pipe fittings, after hanging on, hanger, threaded connection packing, should use the teflon tape sealed good performance, avoid by all means cannot use high-pressure rubber mat, because rubber mat is easy to expand, lead to air leakage. Don't do packing with linen yarn. To tighten the pipeline after ready.
3.7.1.9 main after installation, but also correct the straightening, looking over the pipe, the pipe should be on a straight line. Use level in the section on the reinspection, prevent local section has a "droop" or "hog ° wait for a phenomenon.
3.7.2, branch pipe installation:
3.7.2.1 after installation can be ready to install the main riser, first check the layers of the reserved hole, hole whether appropriate, vertical pipe in place, in the intended location, two nozzle alignment, thread object hanging on the riser a certain height, find straight, alignment, and solid solder joint use of electricity, after review, before welding.
3.7.2.2 riser installed, ready to install branch, the branch general rows, when installed on the wall popup line of position, to ensure the quality of installation.
3.7.3 pipeline in paragraphs local installed, should be in joint and joints do anticorrosive processing, make its practice accord with drawings requirements. Pay attention to section after the test, the acceptance formalities in time. Then in the installation of next working procedure.
3.7.4 copper pipe installation:
3.7.4.1 expansion joint is used to connect piping.
3.7.4.2 flaring nut into the copper pipe, tube expanding tool and then use expansion pipe, tube expanding tool application specified expansion tube, can not use other methods of expanding tube.
3.7.4.3 using a special wrench, tighten the flaring nut can't use adjustable wrench, etc.
3.7.5 pipeline protection after installation and maintenance:
3.7.5.1 buried within the concrete wall of pipeline, must according to the design requirements for construction, must be in places of asphalt yellow linen, polyethylene tape or similar products.
3.7.5.2 in fire area, pipeline through the gap should be filled in by incombustible material, and considering the necessary scale, fully filled.
3.8 equipment support installation
3.8.1, according to requirements of the design drawings for equipment support assembly, assembly note according to drawings are numbered sequentially for installation, after installation should be correct.
3.8.2 parts assembly supporting the use of attachment should be bolted, nut, washer, u-shaped card, etc., be careful not to assemble, exposed it is advisable to 1/2 the diameter of the bolt length for it.
Finish 3.8.3 storage container holder assembly, after review as to meet the requirements of design drawings, with 4 bolts fixed on the ground of storage container room (FIG. L - 32).
3.9.1.4 connection hose with steel wire woven. Check valve can prevent fire pipeline solvent backflow. Multiple storage container system of container valve and the manifold connection hose and check valve, hose can adjust the installation error, reduce the impact of the spray when.
3.9.2 selector valve installation:
3.9.2.1 selector valve in manual open upper lever, installed in the position of easy operated by hand.
3.9.2.2 generally choose valve as flange connection, should make the flange bolt hole and horizontal or vertical axis symmetric distribution. Diagonal screw fixation when installing bolts. Packing of heat-resisting asbestos "O ° figure. After installation with square and feeler to check the verticality and clearance values.
3.9.2.3 selector valve normally closed, when a protective area fire extinguishing controller spray instruction, the selector valve to the region's open at this time, to the instruction of spray fire area.
3.10 pipe individual and system pressure testing:
3.10.1 pipeline delivery before use after installation, must carry out the following work:
Hydrostatic test for 3.10.1.1 system, before water pressure test, high pressure and low pressure pipe of the section and system should not be separated from the test equipment connection. And adding to the position of the desired blind plate, do mark, record. The valve should be open in the system. In general system hydrostatic test at 1.5 times of working pressure. Under the testing pressure maintain 10 min, and then fell to pressure of work, check the system line, no leakage phenomenon for qualified.
3.10.1.2 system after water pressure test, to have a purging in pipeline system. Purging work process is commonly used in gas compressor in the plant. Purging in each outlet placed white cloth or paper board examination, must not have rust, iron filings, dust, moisture and other dirt. After purging qualified, should be put on the joint parts.
3.10.1.3 system after a purge piping, with nitrogen gas blowing off first test, the pressure to 1 mpa, brush with soap and water leak detection joint, and to observe the pressure gauge 10 min for qualified. Then in charge of the section of the test, choose by 1301 containers exported to valve test pressure is 5.9 MPa. From the selector valve to the nozzle (blind with temporary plugging) elbow test pressure is 4.62 MPa. Two pieces of test pressure time for 5 min, respectively, to not qualified. The acceptance formalities in time (when the design without rules, 1301 gas testing on this basis).
3.10.1.4 when using nitrogen or halogenated gas pipeline system pressure test (including the discharge test), should be monitored by the fire department, construction units, design units, construction units together and go through the formalities of acceptance.
3.11 after the pressure test, pipeline flushing work, can be carried out on pipe by flushing, until meet the design requirements for qualified.
3.12 devices. Storage container according to the serial number of the design requirements, the order of the solid (FIG. 1-32). Don't notice when installation chassis bent prolapse, anchor bolt tighten-up container framework, put the storage container within the framework of the container, and container hoop fixed.
3.13 assembly equipment accessories and pressure switch. Will first starter box fixed on the frame and screw down the bolt, check after the integrity, the small bottle nitrogen cylinders (starting) stabilizing iron set in a box, and then fixed the correct position on the casing pressure switch (FIG. 1-34).
3.14 pipeline and equipment after the installation, according to the requirements of design, to brush oil pipeline and equipment; Brush oil pipeline and equipment should do when surface clean, no rust, oil, dirt and other defects.
3.15 the nozzle. When installation should be in accordance with the requirements of design drawings, accordingly, may not be any change, wrong. Lest affect installation quality.
3.15.1 nozzle cover installation: small trumpet shape, commonly used this mask is used on the nozzle orifice clogging.
3.15.2 is threaded connection methods, filled with teflon tape.
3.16 debugging. Debugging before the check of the whole system, to all qualified after before debugging, debugging when pressure slowly appreciation, pay attention to check whether there is leakage in the system, after being qualified, will indoor smoke out clean, to prevent pollution.
4 quality standards
4.1 ensure projects:
4.4.1 in pipeline pressure test system, test results, must comply with the design requirements.
Inspection method: check or partition system (period) test record.
4.1.2 pipe slope must comply with the design requirements.
Testing method: use level (level), stay, and feet quantity check or check measurement record.
4.1.3 welder, welding of high pressure pipe must be approved by the examination of qualified, can weld.
Inspection method: inspect welder certificate (city labor bureau pressure vessel inspection certificate)
4.2 the basic items:
2 galvanized carbon steel pipe of threaded connection shall meet the following requirements:
Thread clean, neat, no broken wires; Galvanized carbon steel pipe and pipe fittings galvanized layer without damage, thread showing a good corrosion resistance; Interface exposed defects such as teflon tape.
The method of examination: observation or collapse.
4.2.2 galvanized carbon seamless steel pipe welding shall meet the following requirements:
4.2.2.1 halon gas using galvanized carbon seamless steel pipe welding, must comply with the design requirements, in accordance with regulations of the design before welding, after welding should make special coating anticorrosive processing.
4.2.2.2 joint width, thickness, straightness and reinforcement of weld surface must conform to the norms of construction, The surface wave of uniform, welding nodular, defects such as slag inclusion and porosity.
Inspection methods: observation or check with the welding test ruler.
Holdings of galvanized flange connection shall meet the following requirements:
Docking parallel, close together, with the center line of the vertical pipe, the screw with nut; Liner material must comply with the design requirements and unique layer. But should pay attention to the overall length of the screw with nut should be consistent, and no more than 1/2 screw diameter.
Inspection method: to observe the examination.
4.2.4 pipe, the installation of the hanger shall meet the following requirements:
Correct and reasonable structure, buried a right and firm, neat rows, bronchitis and hanger should be closely contact with pipe equipment.
The method of examination: observation or using a wrench.
4.2.5 valve installation shall meet the following requirements:
Type, specification, compression strength and leak test results should comply with the design requirements; The inlet and outlet of the location, elevation, in the right direction; Connection is strong, tight, opening and closing flexible, towards reasonable, surface clean.
Inspection method: arbor inspection and check the factory certificate, test list.
4.2.6 equipment, nozzle and nozzle cover installation shall meet the following requirements:
Specifications, model should comply with the design requirements; Location, elevation, reasonable directions; Connection is strong, the surface clean.
Inspection method: stay, alignment, feet quantity check; Check the factory certificate of equipment and the nozzle.
4.2.7 piping, box, stent coating shall meet the following requirements:
Types and besmear to brush paint, color should comply with the design requirements; Good adhesion, without peeling, blister and the coating; Film thickness uniformity, colour and lustre is consistent, no flow and pollution phenomenon.
Inspection method: to observe the examination.
4.3 allowable deviation project (table 1-19).
Piping installation allowable deviation table 1-19
Will project allowable deviation check method (mm)
1 take the 10 level (level)
2 the plus or minus 10 ruler arrows and feet high quantity to check
0.5 diameter 100 mm or less
Horizontal and longitudinal every 1 m diameter > 100 mm with level ruler
Three horizontal direction over bending diameter 100 mm or less ≯ 13 arrows and quantity check
(more than 25 m) diameter > 100 mm ≯ 15
2 per 1 m messenger wire and feet quantity check
The perpendicularity of the riser length (more than 5 m) ≯ 10 messenger wire and feet quantity check
Bending of ellipticity mouth mouth Max - min 10/100 diameter 100 mm or less
Nozzle Max diameter > 100 mm 8/100 quantity check with outside calipers and ruler
5 finished product protection
5.1 prefabrication good dry, vertical, branch pipe, emissions separately according to the number on the flat ground, and water cushion is good, are not allowed to fill the small tube pieces, fight pedal and hit.
5.2 after the threaded connection pipe, pay attention to protect the pipe thread. Installed pipe racks shall not do, wearing a seatbelt, scaffolding, more shall be stamped on.
5.3 installed before rendering, spraying pipe and equipment should be properly handle, to avoid the pollution.
6 should pay attention to quality problems
6.1 galvanized carbon steel galvanized layer are destroyed. Can not prevent stress and tongs day long disrepair card pipe, the pipe under pressure.
6.2 the welding line offset, wrong. Before the installation technical level is not enough or welding spot welding welding.
6.3 electrode welding peel off. Electrode is not allowed in a damp place. Electrode should be dried before use.
6.4 teflon tape exposed cleaning not net, wire head exposed for too long. Cleaning is not careful, thread is too tight.
6.5, hanger production slanting, twist and the size is not allowed. The reason is, hanger production when the ground not level off, familiar with the drawing is not enough, the accuracy requirement is lax. Should pay attention to the quality inspection to check and accept.
7 should possess the quality of the record
7.1 should have the material equipment factory certificate, the manufacturer production license and statutory testing unit test report.
7.2 material site acceptance records of the equipment.
7.3 main fire extinguishing system engineering records.
7.4 fire gas fire extinguishing system, branch pipe and nozzle preview records.
7.5 hidden fire extinguishing pipe inspection records.
7.6 single fire extinguishing pipe pressure test records.
7.7 fire extinguishing pipeline system pressure test record.
7.8 Fire purge gas extinguishing pipeline system in.
7.9 spray fire gas pipeline system debugging record.
The technology standard is applicable to important rooms, libraries, archives and other buildings. Indoor fire USES halon gas fire extinguishing system pipeline and equipment installation works. Halon fire extinguishing agent have the characteristics of non-conductive, no pollution, but only in confined Spaces can achieve good effect.
2 construction preparation
2.1 material equipment requirements:
2.1.1 indoor fire gases (halon fire extinguishing equipment, steel, pipe, pipe fittings, all kinds of valves and accessory products and accessories, shall have the certificate of the factory and product certification. Into the scene, to do inspection before installation and use, the validation work, must comply with the relevant national standard, ministerial standard and fire supervision department regulations and requirements.
2.1.2 according to installation schedule after check in the amount of material, inspection specification, type, size, quality conformed to the drawings requirements.
2.1.2.1 galvanized carbon seamless steel pipe and pipe fittings:
A tube: adopt galvanized carbon seamless steel pipe or thickening galvanized carbon steel pipe, pipe wall inside and outside galvanized evenly, no rust, wall without reinforcement, wall thickness should comply with the design requirements. Choosing pipe, internal pressure should meet the design requirements.
B pipe fittings: the forging steel galvanized inside and outside, the galvanized layer surface evenly, no rust, unbiased clasp, wire, square buckle, wire buckle is not complete, the phenomenon such as Angle is incorrect. Especially the flange to internal and external galvanized, galvanized layer is complete, uniform water line, can not have fracture, the phenomenon such as sticking dirt.
2.1.2.2 non-ferrous metal pipes and pipe fittings: the seamless copper pipe and pipe fittings, pipe wall thickness uniform inside and outside, inside and outside tube skin smooth surface gloss, pipe fittings can not have the thread is not complete, Angle is incorrect, partial clasp, wire, etc.
2.1.2.3 valve: valve after the arrival of the goods, to do sampling test, should be no crack, casting beautiful, inside and outside the rules, flexible switch tightly and handwheel no damage.
2.1.2.4 equipment: halogenated gas cylinders, starting gear box and ancillary equipment and spare parts in the specification, type, size, quality must meet the design requirements, the equipment of spare parts should be complete, the surface neat appearance, no damage. To wear the cap and in the up-right position, impact, careful operation, are not allowed to put in direct sunlight and high temperature, there is danger etc nearby.
2.1.2.5 other materials: steel, round steel, pipe, fittings, pipe clamp, oil, packing, packing, electric welding, anticorrosive coatings shall comply with the design requirements, etc.
2.2 the main equipment:
2.2.1 equipment: sawing machine, sets of machine, bench drill, drill, nail gun, welding machine, air compressor, pipe bender, walkie-talkie, etc.
2.2.2 tools: tongs, pressure case, hand saw, hammer, adjustable tube support; Hacksaw, file, die, wrench, adjustable wrench; Oxygen cylinder, acetylene cylinder, oxygen gauge, pressure gauge, acetylene table, welding torch, cutting torch; The welding wire, electric welding pliers, wire cutting pliers, screwdriver; A hammer and chisel, pipe, etc.
2.2.3 measuring tool: the steel tape, flat feet, Angle square, oil standard caliper, level (level), line drop; White silk or paper, pencil, chalk, pencil, etc.
2.3 operation conditions:
2.3.1 hole, hole, slot, eye, planted all kinds of branch, hanging, card holder and the embedded iron, etc., should be timely cooperation progress to reserve, buries the civil engineering.
2.3.2 main installation: in each layer (section) the top of the main, in each layer (section) structure cap after installation; Located in the main floor, should be in after a layer structure; Located in the main inside condole top, best installed in front of the ceiling.
2.3.3 riser installation: should be performed after the good ground, if you need before apply to installation, must guarantee the accuracy of the horizontal line and ground surface elevation.
2.3.4 branch pipe installation: must be installed in after wiping the wall. Metope does not make plaster, branch pipe shall be carried out in blow be bored with child after installation.
2.3.5 halon gas cylinders, starting gear box should be stabilized after indoor metope, dado is done with fixed.
2.3.6 stent pipeline and equipment should be in place before decorate, steady.
2.3.7 other equipment should be finished inside decorate, after pressure testing, test for installation.
3 operation process
3.1 process:
Installation preparation to the reserved hole, hole, embedded iron pieces, pipes, pipe fittings, count and check equipment and accessories
, hanger production, installation and piping prefabrication to pipe installation, equipment support and installation
Collection of pipe and pipe fittings, selector valve installed to individual and system pressure testing, flushing - equipment, solid cylinders installed -
Assembly equipment accessories and pressure switch to brush oil pipe, nozzle installation and debugging
3.2 installation preparation:
3.2.1 familiar with drawings, carefully understand design intent, construction scheme is determined.
3.2.2 review reserve, buries the location, size, elevation.
3.2.3 position according to draw a line in the division of design drawings, pipe diameter, diameter variation, obligate mouth coordinates, elevation, slope direction and branch, the location of the hanger, a sketch, and will be recorded in the measurement of size; Tied for cross and pay attention to the smallest interval of lined pipe size.
3.2.4 shall be carried out in accordance with the sketch, piping prefabrication, processing after checking the size, number, colors and tidy. According to the requirements, hanging, card, frame installation.
3.2.5 will be shipped to the installation site, prefabricated piping and accessories according to the code in place, clean the pipe bore.
3.3 the reserved hole, hole and embedded iron:
3.3.1 in reinforced concrete floor slab, beam, the reserved hole, hole in the wall, should set up specialized personnel in accordance with the design drawings will be the location of the pipeline and equipment, coordinate, elevation measurement accuracy.
3.3.2 rainfall distribution on 10-12 cooperate the pay-off localization, scaling is high, the size. At the same time to solve the problem of construction of conflicting with related department.
Mark 3.3.3 hole, hole and embedded iron casting parts. To fasten on pre molding box in front of the banding steel, flexible opening box stuffing material. In the process of pouring concrete, should establish professional check and supervision, in order to avoid displacement and displacement, location, size and note the reinspection.
We do in case of shift, dislocation, need to take iron processing, must seek consent of the relevant departments, shall be performed.
3.4 equipment material inventory check:
3.4.1 track according to the requirements of design drawings, before installation, do specification, type, size, quality, etc of inventory verification, ensure the quality of quantity, comply with the design and installation requirements.
3.4.2 of visual is not easy to identify materials (valve) sent sample to laboratory testing.
3.5 a, hanger production installation:
3.5.1 track of bronchitis and hanger production:
Pipes, fittings choose materials shall, in accordance with requirements of the design drawing, the size, type, machining precision and welding shall comply with the design requirements.
The specific method see 1-1.
3.5.2, the installation of the hanger
3.5.2.1 pipe should be in a timely manner, hanger, hanger installation of fixed and adjustment work.
3.5.2.2 installation, the position of the hanger, elevation should be accurate and spacing should be reasonable. Should be in accordance with the requirements of design drawings, the standard rules for installation.
3.5.2.3 pipes are not allowed to displacement, fixed bracket should be set up. Must be installed strictly in the position of design rules, and shall make the pipe firmly fixed on the bracket.
3.5.2.4 embedded inside the wall of the stent, the framework of the welding on the embedded parts, use nail installation bracket, with expansion bolt installation bracket, should be in accordance with design drawings requirements for installation.
3.5.2.5 without hole, hole and embedded parts on concrete members, can choose nail or expansion bolt mounting bracket, but unfavorable installation thrust large fixed bracket.
3.5.2.6 adopting expansion bolt has without drill and drill two kinds, common specifications as M8, M10, M12, etc.
A mounting bracket without drilling bolts, must first hole on the position of the mounting bracket.
B to drill a hole must be vertical component surface. Are equal in the diameter of the hole and casing diameter, depth of casing add 15 mm length. Drill, the debris removal within the hole clean.
C to set on the bolt, casing pipe towards the open end of the tapered tail bolt; Then take the nut on the bolt. Then scored has drilled hole, into the nut contact orifice, tighten the nut with a wrench. With tighten nut, bolt of tapered tail will take open casing tail swelling, make the bolt fastening with casing in hole (figure l - 30).
3.5.2.7 when installing parallel pipeline, should pay attention to standardize pipe spacing arrangement.
3.6 precast processing:
3.6.1 pipe cutting: according to the drawings and the actual measurement of section size, draw sketch, calculating blanking pipe length, according to the sketch on the section after the draw the required block size, make tools at right angles to the pipe axis, cutting the vertical pipe, cannot use the machine tools, etc.
3.6.2 duct incision processing: all the pipeline slit must use file file into a smooth surface, remove the pipe inner and outer edge, burr, etc.
3.6.3 pipe inspection, cleaning, and the protection of the pipe end.
3.6.3.1 duct incision in front of the joint must be cleaning the remnant and pipe in the pipe mouth, both inside and outside of iron filings, etc.
3.6.3.2 is processed or piping job temporarily suspend, must use plug tube end sealing good, does not make the foreign body into the tube and pipe thread outside the mouth.
3.6.3.3 pipe before installation must clean the pipe inside the chamber and the thread outside the mouth.
3.6.4 radar echoes captured the precast processed section with good parts, straightening number into the appropriate position, to be installed.
3.7 pipe installation generally includes ZhuGanGuan, main and branch pipe, branch; Collection tube, pipe run installation. When installation, begin by the main line, other branch can in turn (FIG. L - 31).
3.7.1 main installation:
3.7.1.1 will check the pipeline prefabrication processed according to the loop number, to the installation site, scattered in number order placed in position. To determine the location of the main, elevation, slope, pipe diameter and diameter variation, etc., according to the size of fixed good, hanger.
3.7.1.2 erect pipeline connection pipe and pipe fittings can be on the ground first part assembly, length so that the hoisting is advisable. After lifting, light fell on the branch, hanger, card ring, prevent tumble hurt.
3.7.1.3 adopts welded pipes, pipe fittings, can be after the completion of all assembly, welding, but joint position should be on the ground when the assembly arranged, selecting appropriate place, so that the welding operation.
3.7.1.4 before welding, only by a heating dry electrode can be used (baking oven temperature of 70 ~ 70 ℃, 30 ~ 60 min), according to the moisture of the electrode, electrode cannot use already wet. Pay attention to remove pipe end dirt.
3.7.1.5 welding according to the standard operation. Selected according to different pipe and tube wall thickness of welding rod or solder wire type, diameter and operation posture, and adopt appropriate to welding current, voltage, welding speed (18) in table 1. When using electric welding machine, should consider its polarity according to the welding material conditions.
Current range selection table 1 to 18
Electrode (2.6 3.2 mm) in diameter
Long (350 mm) 350
Next to the 50 ~ 85 (A) 85 ~ 85 (A)
Current range
Set to
On the
3.7.1.6 correctly use groove Angle and pipe and pipe connection, there can be no dislocation welding.
3.7.1.7 in pipe welding parts and inside and outside surface of the tube and flange welding positions, coating and pipeline antiseptic agent with the same material.
3.7.1.8 using threaded pipe, pipe fittings, after hanging on, hanger, threaded connection packing, should use the teflon tape sealed good performance, avoid by all means cannot use high-pressure rubber mat, because rubber mat is easy to expand, lead to air leakage. Don't do packing with linen yarn. To tighten the pipeline after ready.
3.7.1.9 main after installation, but also correct the straightening, looking over the pipe, the pipe should be on a straight line. Use level in the section on the reinspection, prevent local section has a "droop" or "hog ° wait for a phenomenon.
3.7.2, branch pipe installation:
3.7.2.1 after installation can be ready to install the main riser, first check the layers of the reserved hole, hole whether appropriate, vertical pipe in place, in the intended location, two nozzle alignment, thread object hanging on the riser a certain height, find straight, alignment, and solid solder joint use of electricity, after review, before welding.
3.7.2.2 riser installed, ready to install branch, the branch general rows, when installed on the wall popup line of position, to ensure the quality of installation.
3.7.3 pipeline in paragraphs local installed, should be in joint and joints do anticorrosive processing, make its practice accord with drawings requirements. Pay attention to section after the test, the acceptance formalities in time. Then in the installation of next working procedure.
3.7.4 copper pipe installation:
3.7.4.1 expansion joint is used to connect piping.
3.7.4.2 flaring nut into the copper pipe, tube expanding tool and then use expansion pipe, tube expanding tool application specified expansion tube, can not use other methods of expanding tube.
3.7.4.3 using a special wrench, tighten the flaring nut can't use adjustable wrench, etc.
3.7.5 pipeline protection after installation and maintenance:
3.7.5.1 buried within the concrete wall of pipeline, must according to the design requirements for construction, must be in places of asphalt yellow linen, polyethylene tape or similar products.
3.7.5.2 in fire area, pipeline through the gap should be filled in by incombustible material, and considering the necessary scale, fully filled.
3.8 equipment support installation
3.8.1, according to requirements of the design drawings for equipment support assembly, assembly note according to drawings are numbered sequentially for installation, after installation should be correct.
3.8.2 parts assembly supporting the use of attachment should be bolted, nut, washer, u-shaped card, etc., be careful not to assemble, exposed it is advisable to 1/2 the diameter of the bolt length for it.
Finish 3.8.3 storage container holder assembly, after review as to meet the requirements of design drawings, with 4 bolts fixed on the ground of storage container room (FIG. L - 32).
3.9.1.4 connection hose with steel wire woven. Check valve can prevent fire pipeline solvent backflow. Multiple storage container system of container valve and the manifold connection hose and check valve, hose can adjust the installation error, reduce the impact of the spray when.
3.9.2 selector valve installation:
3.9.2.1 selector valve in manual open upper lever, installed in the position of easy operated by hand.
3.9.2.2 generally choose valve as flange connection, should make the flange bolt hole and horizontal or vertical axis symmetric distribution. Diagonal screw fixation when installing bolts. Packing of heat-resisting asbestos "O ° figure. After installation with square and feeler to check the verticality and clearance values.
3.9.2.3 selector valve normally closed, when a protective area fire extinguishing controller spray instruction, the selector valve to the region's open at this time, to the instruction of spray fire area.
3.10 pipe individual and system pressure testing:
3.10.1 pipeline delivery before use after installation, must carry out the following work:
Hydrostatic test for 3.10.1.1 system, before water pressure test, high pressure and low pressure pipe of the section and system should not be separated from the test equipment connection. And adding to the position of the desired blind plate, do mark, record. The valve should be open in the system. In general system hydrostatic test at 1.5 times of working pressure. Under the testing pressure maintain 10 min, and then fell to pressure of work, check the system line, no leakage phenomenon for qualified.
3.10.1.2 system after water pressure test, to have a purging in pipeline system. Purging work process is commonly used in gas compressor in the plant. Purging in each outlet placed white cloth or paper board examination, must not have rust, iron filings, dust, moisture and other dirt. After purging qualified, should be put on the joint parts.
3.10.1.3 system after a purge piping, with nitrogen gas blowing off first test, the pressure to 1 mpa, brush with soap and water leak detection joint, and to observe the pressure gauge 10 min for qualified. Then in charge of the section of the test, choose by 1301 containers exported to valve test pressure is 5.9 MPa. From the selector valve to the nozzle (blind with temporary plugging) elbow test pressure is 4.62 MPa. Two pieces of test pressure time for 5 min, respectively, to not qualified. The acceptance formalities in time (when the design without rules, 1301 gas testing on this basis).
3.10.1.4 when using nitrogen or halogenated gas pipeline system pressure test (including the discharge test), should be monitored by the fire department, construction units, design units, construction units together and go through the formalities of acceptance.
3.11 after the pressure test, pipeline flushing work, can be carried out on pipe by flushing, until meet the design requirements for qualified.
3.12 devices. Storage container according to the serial number of the design requirements, the order of the solid (FIG. 1-32). Don't notice when installation chassis bent prolapse, anchor bolt tighten-up container framework, put the storage container within the framework of the container, and container hoop fixed.
3.13 assembly equipment accessories and pressure switch. Will first starter box fixed on the frame and screw down the bolt, check after the integrity, the small bottle nitrogen cylinders (starting) stabilizing iron set in a box, and then fixed the correct position on the casing pressure switch (FIG. 1-34).
3.14 pipeline and equipment after the installation, according to the requirements of design, to brush oil pipeline and equipment; Brush oil pipeline and equipment should do when surface clean, no rust, oil, dirt and other defects.
3.15 the nozzle. When installation should be in accordance with the requirements of design drawings, accordingly, may not be any change, wrong. Lest affect installation quality.
3.15.1 nozzle cover installation: small trumpet shape, commonly used this mask is used on the nozzle orifice clogging.
3.15.2 is threaded connection methods, filled with teflon tape.
3.16 debugging. Debugging before the check of the whole system, to all qualified after before debugging, debugging when pressure slowly appreciation, pay attention to check whether there is leakage in the system, after being qualified, will indoor smoke out clean, to prevent pollution.
4 quality standards
4.1 ensure projects:
4.4.1 in pipeline pressure test system, test results, must comply with the design requirements.
Inspection method: check or partition system (period) test record.
4.1.2 pipe slope must comply with the design requirements.
Testing method: use level (level), stay, and feet quantity check or check measurement record.
4.1.3 welder, welding of high pressure pipe must be approved by the examination of qualified, can weld.
Inspection method: inspect welder certificate (city labor bureau pressure vessel inspection certificate)
4.2 the basic items:
2 galvanized carbon steel pipe of threaded connection shall meet the following requirements:
Thread clean, neat, no broken wires; Galvanized carbon steel pipe and pipe fittings galvanized layer without damage, thread showing a good corrosion resistance; Interface exposed defects such as teflon tape.
The method of examination: observation or collapse.
4.2.2 galvanized carbon seamless steel pipe welding shall meet the following requirements:
4.2.2.1 halon gas using galvanized carbon seamless steel pipe welding, must comply with the design requirements, in accordance with regulations of the design before welding, after welding should make special coating anticorrosive processing.
4.2.2.2 joint width, thickness, straightness and reinforcement of weld surface must conform to the norms of construction, The surface wave of uniform, welding nodular, defects such as slag inclusion and porosity.
Inspection methods: observation or check with the welding test ruler.
Holdings of galvanized flange connection shall meet the following requirements:
Docking parallel, close together, with the center line of the vertical pipe, the screw with nut; Liner material must comply with the design requirements and unique layer. But should pay attention to the overall length of the screw with nut should be consistent, and no more than 1/2 screw diameter.
Inspection method: to observe the examination.
4.2.4 pipe, the installation of the hanger shall meet the following requirements:
Correct and reasonable structure, buried a right and firm, neat rows, bronchitis and hanger should be closely contact with pipe equipment.
The method of examination: observation or using a wrench.
4.2.5 valve installation shall meet the following requirements:
Type, specification, compression strength and leak test results should comply with the design requirements; The inlet and outlet of the location, elevation, in the right direction; Connection is strong, tight, opening and closing flexible, towards reasonable, surface clean.
Inspection method: arbor inspection and check the factory certificate, test list.
4.2.6 equipment, nozzle and nozzle cover installation shall meet the following requirements:
Specifications, model should comply with the design requirements; Location, elevation, reasonable directions; Connection is strong, the surface clean.
Inspection method: stay, alignment, feet quantity check; Check the factory certificate of equipment and the nozzle.
4.2.7 piping, box, stent coating shall meet the following requirements:
Types and besmear to brush paint, color should comply with the design requirements; Good adhesion, without peeling, blister and the coating; Film thickness uniformity, colour and lustre is consistent, no flow and pollution phenomenon.
Inspection method: to observe the examination.
4.3 allowable deviation project (table 1-19).
Piping installation allowable deviation table 1-19
Will project allowable deviation check method (mm)
1 take the 10 level (level)
2 the plus or minus 10 ruler arrows and feet high quantity to check
0.5 diameter 100 mm or less
Horizontal and longitudinal every 1 m diameter > 100 mm with level ruler
Three horizontal direction over bending diameter 100 mm or less ≯ 13 arrows and quantity check
(more than 25 m) diameter > 100 mm ≯ 15
2 per 1 m messenger wire and feet quantity check
The perpendicularity of the riser length (more than 5 m) ≯ 10 messenger wire and feet quantity check
Bending of ellipticity mouth mouth Max - min 10/100 diameter 100 mm or less
Nozzle Max diameter > 100 mm 8/100 quantity check with outside calipers and ruler
5 finished product protection
5.1 prefabrication good dry, vertical, branch pipe, emissions separately according to the number on the flat ground, and water cushion is good, are not allowed to fill the small tube pieces, fight pedal and hit.
5.2 after the threaded connection pipe, pay attention to protect the pipe thread. Installed pipe racks shall not do, wearing a seatbelt, scaffolding, more shall be stamped on.
5.3 installed before rendering, spraying pipe and equipment should be properly handle, to avoid the pollution.
6 should pay attention to quality problems
6.1 galvanized carbon steel galvanized layer are destroyed. Can not prevent stress and tongs day long disrepair card pipe, the pipe under pressure.
6.2 the welding line offset, wrong. Before the installation technical level is not enough or welding spot welding welding.
6.3 electrode welding peel off. Electrode is not allowed in a damp place. Electrode should be dried before use.
6.4 teflon tape exposed cleaning not net, wire head exposed for too long. Cleaning is not careful, thread is too tight.
6.5, hanger production slanting, twist and the size is not allowed. The reason is, hanger production when the ground not level off, familiar with the drawing is not enough, the accuracy requirement is lax. Should pay attention to the quality inspection to check and accept.
7 should possess the quality of the record
7.1 should have the material equipment factory certificate, the manufacturer production license and statutory testing unit test report.
7.2 material site acceptance records of the equipment.
7.3 main fire extinguishing system engineering records.
7.4 fire gas fire extinguishing system, branch pipe and nozzle preview records.
7.5 hidden fire extinguishing pipe inspection records.
7.6 single fire extinguishing pipe pressure test records.
7.7 fire extinguishing pipeline system pressure test record.
7.8 Fire purge gas extinguishing pipeline system in.
7.9 spray fire gas pipeline system debugging record.
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