【 Weak current College 】 fire extinguisher maintenance and end-of-the-Power By 【 China power house network 】

1.0 topic content and scope of application
1.1 this standard stipulates the fire extinguisher inspection, maintenance requirements and conditions for end-of-fire extinguishers.
1.2 this standard applies to all types of portable and trolley-type fire extinguisher maintenance and scrap.
2.0 reference standards
GB4351 complying with the General technical specifications
GB4402 extinguishers
3.0 fire extinguisher inspection
3.1 fire extinguishers in each time after use, must be taken to have made maintenance license maintenance unit (hereinafter referred to as maintenance unit) check, the replacement of worn parts already, re-filling and driven gas.
3.2 fire extinguishers, whether already used or unused, the factory years has reached the required deadline, you must send maintenance unit hydraulic test checks.
3.2.1 handheld and cart-1211 fire extinguishers, portable and trolley dry chemical fire extinguisher, as well as portable and trolley carbon dioxide fire extinguishers expire after five years, every two years; you must check the hydraulic test, etc.
3.2.2 handheld and cart-foam fire extinguishers, portable extinguisher expires after three years, every two years, the hydraulic pressure test checks must be carried out.
3.2.3 handheld and cart-chemical foam fire extinguishers, portable fire extinguishers at the expiry of the second year of acid, then every other year, the hydraulic pressure test checks must be carried out.
3.3 appearance inspection found 5.1 situation must be listed for waste treatment.
4.0 maintenance technical requirements
After various maintenance 4.1 fire extinguishers must be consistent with national standards for the product or industry standards.
4.2 fire extinguisher simplified
4.2.1 maintenance unit must be 3.2, one by one to the hydraulic test extinguisher. In addition, the fire extinguisher is already in use, although the end reach 3.2 deadline, but appearance inspection revealed the tube body has the appearance quality of the weld repair, does not comply with the requirements of the hydraulic pressure test should be carried out. To prevent pollution of the environment, water pressure test before the extinguishing agent will be simplified into one corresponding storage tanks. Hydrostatic test pressure for fire extinguishers 1.5 times the design pressure. Test may not have the leakage and macroscopic deformation (residual deformation capacity equal to or more than 6 per cent), and so affect the strength of the defect.
4.2.2 hydraulic test qualified simplified, decals complete, but some patent leather peeling paint should be re-Xu.
4.2.3 hydraulic test qualified duct (water-type fire extinguishers), should be dry.
4.3 fire extinguishers of rubber, plastic parts shall not be washed with organic solvents. Deformation and discoloration, aging or faults must be replaced.
4.4 pressure gauge on the external surface shall not be deformed, injuries, and other defects. Pressure value display should be properly, you should replace the pressure gauge.
4.5 nozzle with deformation, cracking, injuries, and other defects, it must be replaced. Dust cover should ensure that the extinguishing agent is able to emit or break off.
4.6 fire extinguishers pressure, valve body and other metal parts must not have a serious injury, deformation, corrosion, impact use of the defect, thimble without visible defects, otherwise, you must replace.
4.7 seals, gaskets, sealing parts must be replaced, and in accordance with the sealing requirements. Dry powder extinguisher with damp-proof membrane must be replaced, and close GB4402 section 2.2.5.
4.8 firearms out of the trachea undue bending, jams, injuries and defects such as cracks, otherwise, you must replace.
4.9 carbon dioxide storage cylinders (hereinafter gas bottle)
4.9.1 storage cylinders from the factory date five years later, after every third year must press GB4351 3.6.2 of the requirements made by hydrostatic pressure test.
4.9.2 hydraulic test unqualified persons must be replaced.
4.9.3 doesn't GB4351 the complying with the General requirements of article 6.3 of stamped storage cylinders must be replaced.
4.10 head
4.10.1 head does not allow the presence of cracks, defects, such as thread failure must be replaced.
4.10.2 plastic for two years after the first use must be simplified to make hydraulic test checks, unqualified persons must be replaced.
4.10.3 metal head from the date of every five years must be simplified with a hydraulic test, unqualified persons must be replaced.
4.11 chemical foam fire extinguishers shall be within the agent bottle defects such as cracks, or must be replaced.
4.12 water or foam-type fire extinguishers strainer damaged, must be replaced.
All you need to replace 4.13 fire, parts, as far as possible using the original production factory production. Bitter with other plants or home-made parts and parts that must conform to national standards, industry standards and a fire extinguisher production plant design requirements.
4.14 after maintenance of fire extinguishers, the filling of extinguishing agent must comply with the requirements of the standard fire extinguishing agent.
4.15 maintenance of fire extinguishers, fire extinguishers must be in the tube body and storage cylinders are affixed permanently repair Ming spleen.
4.15.1 barrel body nameplate
4.15.1.1 nameplate position in fire extinguishers factory rear wall decals.
4.15.1.2 nameplate size recommended for 70mm×50mm.
4.15.1.3 nameplate color recommended for black and white.
4.15.1.4 nameplate should have the following content:
The name of the maintenance unit;
Maintenance license number;
Simplified hydraulic test pressure value MPa;
Maintenance of the year, month.
4.15.1.5 nameplate of each maintenance does not allow overwriting.
4.15.1.6 storage cylinders and permanent maintenance nameplate (do not allow to play steel Woo), shall identify the storage cylinder filling factor, the amount of driving gas filling, but also should have the maintenance unit name and inflation of the year, month.
5.0 fire extinguishers of scrap
5.1 fire any of the following circumstances, must be rejected.
5.1.1 cylinders according to paragraph 4.2.1 hydraulic test, not qualified to be scrapped, does not allow welding.
5.1.2 simplified serious corrosion (rust off, patent leather large area greater than, equal to one-third of the total area of the simplified) or connection parts, cylinder bottom severe corrosion.
5.1.3 in snap-on head no (or not installed) unloading gas screw and screw.
5.1.4 hand wheel valve extinguisher must replace the pressure valve; fire extinguishing agent in the Coachman dry is equal to the fire extinguisher, 4kg should be replaced with intermittent spray body head or addition loaded gun. Cannot be replaced should scrap.
5.1.5 simplified serious deformation.
5.1.6 structure (e.g. simplified flat bottom; storage cylinders with external, though the body into the intake manifold cylinder internal aft).
5.1.7 no production plant name and date of manufacture (including the decals peeling, or despite the decals, but had not see the name of the factory and factory years).
5.1.8 has not obtained the production licence manufacturers.
5.1.9 the Ministry of public security or the provinces (cities, districts) Fire Department order prohibiting sales and maintenance.
5.2 fire extinguishers scrap life
Fire extinguishers from the date of manufacture, achieved the following period, must be rejected:
5.2.1 portable chemical foam fire extinguishers-5 years;
5.2.2 hand-held fire extinguishers and alkali-5 years;
5.2.3 hand-held extinguisher — 6 years;
5.2.4 extinguishers (storage cylinders-) – 8 years;
5.2.5 portable storage pressure dry chemical fire extinguisher — 10 years;
5.2.6 hand-held fire extinguisher 1211 — 10 years;
5.2.7 portable extinguishers – 12 years;
5.2.8 trolley chemical foam fire extinguishers – 8 years;
5.2.9 trolley dry chemical fire extinguisher (storage cylinder type) — 10 years;
5.2.10 cart storage pressure dry chemical fire extinguisher — 12 years;
5.2.11 trolley-1211 fire extinguishers-10 years;
5.2.12 trolley carbon dioxide fire extinguishers – 12 years.
5.3 scrap logos
Should scrap of fire extinguishers or storage cylinder, must be in the tube body or bottle on drilling, and sticky paste "scrap" clearly marked as follows:
5.3.1 the word "scrap", font minimum 25mm×25mm;
5.3.2 scrapped years, months;
5.3.3 maintenance organization name;
5.3.4 inspectors check chapter.
6.0 annotated
This standard consists of the Ministry of public security.
This standard by the National Fire Protection Committee of standardization convergence case.