7/29/2019 Caiet de Sarcini Anticoroziune - Giurgiueng

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SpecificationsFor anticorrosive protection for metalic constructions

The metalic superstructure of the hall it is part of overground building cathegory, constructions for weach agresive environment is the open, surroundings

The agresivity of the corrosive environment is defined by the intensity of corrosive environment against metal.

The anticorrosive solution is established according to agresivity classes for environment in witch the building will be built and used, and according with it’s estimatedlifetime.

Classification after environment agresivity Agressive athmosferic environments classifies according to STAS 10128/86, in four 

classes of agresivity against steel constructions.The agresivity class of the environment in witch is located and used the bulding is

established according to:-phisical stage of the agressive factor -environment type

Closen building with storehouse destination is of agresivity 1m = nonagresive ( attach1 – chart . 4 – GP 035 - 98)

Establishing the solutions for anticorrosive protection

For agresivity class 1m the anticorrosive protection sistem chosen is by painting with

air drying film. From protection recepies exemplificated in “ Ghidul de protectie , executie siexploatare ( urmarire , interventii ) privind protectia impotriva coroziunii a constructiilor dinotel – indicativ GP 035 – 98 “ it had been chosed the sistem made of:

- ground G5162 Ac oxide red painted in two coats with one coat of 30 micronesthikness

- glaze superpolilac E5046 in tree coats of paint with ones coat of 40 micronesthikness.

The coverege has an estimated lifetime of 15-25 years.The beneficiary can choose, with designer’s agrement, another preotection sistem

from guide “ GP 035 – 98 “sistem that is agremented .

3.Surface preparation .Surface preparation it will be made in factory using sand cleaning, after that we have

a 1 grade cleaning according to STAS 10166/1 ).For covering sistems aplication by painting it has to be created an environment with

forword conditions:-no dust-lowest concentration of agressive gases

-air temperature and pieces that ask potection between 5 and 40 °C

-relative umidity of the air under 70% according to STAS 10702/1

4. Protection aplication . The covering paint coats application will be made before the elements are assembled

to the construction. It is acceptable that the last coat to be applied after the asemblingproces.

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The protection sistem will be aplied with the brush, the roll or air brush, according toindications given by the paint producer.

The first coat from tha painting coverage sistem will be painted after maximum treehours after the prepairing of steel surface .

Each paint coat has to be continuos , withouth wrinkle, air locks, exfoliation, cracks,

irregularities. Each paint coat color has to be uniforme along all the surface of the elementand the colour tone has to be different from each paint coat to be albe to check the number of pait coats that were painted.

The paint coats numer from the coverage sistem , aplied on steel pieces surface hasto realise the minimum thikness provided , includin corners and edges (170 microne -chart. 5 – Guide G035-98 ).

 After painted elements are assembled, the protection paint coat stage will be checkedand if it is necessary some local remedies will be made or a paint coat for general finishingwill be aplied.

 All the rules in effect regarding environment protection and the work protection rules ,according to laws and instructions in effect, and also P.S.I. must be respected at the

execution of anticorrosive protection

Main technical prescriptions .STAS 10128/86 – Protection against corrosive for overground steel constructionsSTAS 10166/1 - Protection against corrosive for overground steel constructions.

Mechanical surface preparation .STAS 10702/1 – Protection against corrosive for overground steel constructions.

Protective coverage. General technical conditions.C56 – 85 Normative regarding quality control and reception of constructions

works and afferent instalations. Notebook XX.Republicans normatives for work protection approved by Work Ministery and Health

ministery with ord. nr. 34/1975 si 60/1975.Normative of work protection in constructions –assembling activity, approved by

M. C. Ind. Cu order. nr. 1233 / D / 1980.Protection guide , execution end using ( following , interventions) regarding protection

against corrosive for steel constructions , indicative G035 – 98.

Realized by: Checked:Ing. Ispas Cosmin Ing. Cojocaru Dragos