Tuesday, April 12, 2011

Current Discussion in our Network: Corrosion Management Problems in India - Relevance of IS 1786

Discussion started by Shankar Sethuramalingam • I feel that the Government should mandate usage of anti-corrosive materials in the construction of such corrosion-prone structures. For eg, The Indian standard for rebars (IS 1786) lays down all the specifications that need to be met while developing a rebar like - the maximum percentage composition of different constituent elements like C, P,S Cr ..in the rebar, the Mininum yield stress, tensile strength etc.... However they do not mandate that these rebars should have passed the anti-corrosion tests. As a result the suppliers are not making the rebars anti-corrosive but they advertise saying the product is IS 1786 certified. This is not the case with ASTM or BS standards, where the rebars should satisfy the anti-corrosion tests apart from satisfying the physical and chemical properties.

Only when it becomes mandatory will the suppliers engage in producing anti-corrosive materials and it will start being used.

9 comments:

  1. Manickam Valliappan • It is interesting to note your observation. Corrosion behaviour of rebars varies from place to place. It depends on many factors. Compliance with any national or international specifications doesn't mean that corrosion control is achieved irrespective of the conditions and structures.

    These standards should specify or give guidelines to follow structure-region-industry specific corrosion assessment to decide on what control is required to improve the life and assure the integrity of structures. We can't find these components in our national standards. Collaboration of Standards Development bodies with various agencies responsible for corrosion control will help the users to select and apply the correct control system.
    13 days ago

    Shankar Sethuramalingam • @ Mr Manickam , What you say is absolutely correct, but some suppliers are using the name of these satandards to justify that their products are corrosion resistant while there is no specification to validate that . They are just using the IS 1786 for advertising their products when all that it provides is some criteria for physical and chemical properties and nothing related to corrosion prevension.
    6 days ago

    Follow Laxminarayan
    Laxminarayan Das • 1. Copper Wire Corrosion Problems:

    Please let us know the specification used.

    Coatings proposed in the specification Vs actual coating supplied is the measure reason for this type of corrosion. You are aware that these coatings are thin film coatings, hence water vapour permeation rate need to be measured in the line of techniques adopted for thin film PE etc. company manufacture those never think of checking coating properties through EIS and other advanced techniques. In short we invest less time and money in product development and spend more time over product application and Product Promotions.

    We need to admit here the fact that whenever such coating usages are procured/used/specified we mainly look into polymer involved not the enriched value it provides after suitable modification, Stoarages w.r.t. quality deviation due to internal polymerisation etc.

    2. REBAR CORROSION ISSUES:

    In India, best qualities of REBARS available and even manufactured by SSI & MSI. It is the duty of users to look into, the problems they are facing whether attributed to the System of vendor approval/Inspection/Tendering they are following or it is the standard/code, which is responsible.

    In my opinion, every user need to go through contents of standards thoroughly and apply suitably to their organisation. In this case no such extra corrosion check is essential to be added in IS 1786. Suppllier need to just check the TMT process and verify the same through Optical microscopy during supplier approval. In addition to this user can frame their own specifications, where they can have addition/deletion to ----- clauses. However it is dangerous and boomerang, If user with low knowledge do this activities.

    SUGGEST LET THE USER OPEN UP ASSET INTEGRITY DEPARTMENT AND LOOK THE MATTER IN BROAD WAYS
    1 day ago

    ReplyDelete
  2. Manickam Valliappan • It is interesting to note your observation. Corrosion behaviour of rebars varies from place to place. It depends on many factors. Compliance with any national or international specifications doesn't mean that corrosion control is achieved irrespective of the conditions and structures.

    These standards should specify or give guidelines to follow structure-region-industry specific corrosion assessment to decide on what control is required to improve the life and assure the integrity of structures. We can't find these components in our national standards. Collaboration of Standards Development bodies with various agencies responsible for corrosion control will help the users to select and apply the correct control system.
    13 days ago

    Shankar Sethuramalingam • @ Mr Manickam , What you say is absolutely correct, but some suppliers are using the name of these satandards to justify that their products are corrosion resistant while there is no specification to validate that . They are just using the IS 1786 for advertising their products when all that it provides is some criteria for physical and chemical properties and nothing related to corrosion prevension.
    6 days ago

    Follow Laxminarayan
    Laxminarayan Das • 1. Copper Wire Corrosion Problems:

    Please let us know the specification used.

    Coatings proposed in the specification Vs actual coating supplied is the measure reason for this type of corrosion. You are aware that these coatings are thin film coatings, hence water vapour permeation rate need to be measured in the line of techniques adopted for thin film PE etc. company manufacture those never think of checking coating properties through EIS and other advanced techniques. In short we invest less time and money in product development and spend more time over product application and Product Promotions.

    We need to admit here the fact that whenever such coating usages are procured/used/specified we mainly look into polymer involved not the enriched value it provides after suitable modification, Stoarages w.r.t. quality deviation due to internal polymerisation etc.

    2. REBAR CORROSION ISSUES:

    In India, best qualities of REBARS available and even manufactured by SSI & MSI. It is the duty of users to look into, the problems they are facing whether attributed to the System of vendor approval/Inspection/Tendering they are following or it is the standard/code, which is responsible.

    In my opinion, every user need to go through contents of standards thoroughly and apply suitably to their organisation. In this case no such extra corrosion check is essential to be added in IS 1786. Suppllier need to just check the TMT process and verify the same through Optical microscopy during supplier approval. In addition to this user can frame their own specifications, where they can have addition/deletion to ----- clauses. However it is dangerous and boomerang, If user with low knowledge do this activities.

    SUGGEST LET THE USER OPEN UP ASSET INTEGRITY DEPARTMENT AND LOOK THE MATTER IN BROAD WAYS
    1 day ago

    ReplyDelete
  3. Manickam Valliappan • It is interesting to note your observation. Corrosion behaviour of rebars varies from place to place. It depends on many factors. Compliance with any national or international specifications doesn't mean that corrosion control is achieved irrespective of the conditions and structures.

    These standards should specify or give guidelines to follow structure-region-industry specific corrosion assessment to decide on what control is required to improve the life and assure the integrity of structures. We can't find these components in our national standards. Collaboration of Standards Development bodies with various agencies responsible for corrosion control will help the users to select and apply the correct control system.
    13 days ago

    Shankar Sethuramalingam • @ Mr Manickam , What you say is absolutely correct, but some suppliers are using the name of these satandards to justify that their products are corrosion resistant while there is no specification to validate that . They are just using the IS 1786 for advertising their products when all that it provides is some criteria for physical and chemical properties and nothing related to corrosion prevension.
    6 days ago

    Laxminarayan Das • 1. Copper Wire Corrosion Problems:

    Please let us know the specification used.

    Coatings proposed in the specification Vs actual coating supplied is the measure reason for this type of corrosion. You are aware that these coatings are thin film coatings, hence water vapour permeation rate need to be measured in the line of techniques adopted for thin film PE etc. company manufacture those never think of checking coating properties through EIS and other advanced techniques. In short we invest less time and money in product development and spend more time over product application and Product Promotions.

    We need to admit here the fact that whenever such coating usages are procured/used/specified we mainly look into polymer involved not the enriched value it provides after suitable modification, Stoarages w.r.t. quality deviation due to internal polymerisation etc.

    2. REBAR CORROSION ISSUES:

    In India, best qualities of REBARS available and even manufactured by SSI & MSI. It is the duty of users to look into, the problems they are facing whether attributed to the System of vendor approval/Inspection/Tendering they are following or it is the standard/code, which is responsible.

    In my opinion, every user need to go through contents of standards thoroughly and apply suitably to their organisation. In this case no such extra corrosion check is essential to be added in IS 1786. Suppllier need to just check the TMT process and verify the same through Optical microscopy during supplier approval. In addition to this user can frame their own specifications, where they can have addition/deletion to ----- clauses. However it is dangerous and boomerang, If user with low knowledge do this activities.

    SUGGEST LET THE USER OPEN UP ASSET INTEGRITY DEPARTMENT AND LOOK THE MATTER IN BROAD WAYS
    1 day ago

    ReplyDelete
  4. Manickam Valliappan • It is interesting to note your observation. Corrosion behaviour of rebars varies from place to place. It depends on many factors. Compliance with any national or international specifications doesn't mean that corrosion control is achieved irrespective of the conditions and structures.

    These standards should specify or give guidelines to follow structure-region-industry specific corrosion assessment to decide on what control is required to improve the life and assure the integrity of structures. We can't find these components in our national standards. Collaboration of Standards Development bodies with various agencies responsible for corrosion control will help the users to select and apply the correct control system.
    13 days ago

    ReplyDelete
  5. Shankar Sethuramalingam • @ Mr Manickam , What you say is absolutely correct, but some suppliers are using the name of these satandards to justify that their products are corrosion resistant while there is no specification to validate that . They are just using the IS 1786 for advertising their products when all that it provides is some criteria for physical and chemical properties and nothing related to corrosion prevension.
    7 days ago


    Laxminarayan Das • 1. Copper Wire Corrosion Problems:

    Please let us know the specification used.

    Coatings proposed in the specification Vs actual coating supplied is the measure reason for this type of corrosion. You are aware that these coatings are thin film coatings, hence water vapour permeation rate need to be measured in the line of techniques adopted for thin film PE etc. company manufacture those never think of checking coating properties through EIS and other advanced techniques. In short we invest less time and money in product development and spend more time over product application and Product Promotions.

    We need to admit here the fact that whenever such coating usages are procured/used/specified we mainly look into polymer involved not the enriched value it provides after suitable modification, Stoarages w.r.t. quality deviation due to internal polymerisation etc.

    2. REBAR CORROSION ISSUES:

    In India, best qualities of REBARS available and even manufactured by SSI & MSI. It is the duty of users to look into, the problems they are facing whether attributed to the System of vendor approval/Inspection/Tendering they are following or it is the standard/code, which is responsible.

    In my opinion, every user need to go through contents of standards thoroughly and apply suitably to their organisation. In this case no such extra corrosion check is essential to be added in IS 1786. Suppllier need to just check the TMT process and verify the same through Optical microscopy during supplier approval. In addition to this user can frame their own specifications, where they can have addition/deletion to ----- clauses. However it is dangerous and boomerang, If user with low knowledge do this activities.

    SUGGEST LET THE USER OPEN UP ASSET INTEGRITY DEPARTMENT AND LOOK THE MATTER IN BROAD WAYS

    2 days ago

    ReplyDelete
  6. Shankar Sethuramalingam • @ Mr Manickam , What you say is absolutely correct, but some suppliers are using the name of these satandards to justify that their products are corrosion resistant while there is no specification to validate that . They are just using the IS 1786 for advertising their products when all that it provides is some criteria for physical and chemical properties and nothing related to corrosion prevension.
    7 days ago

    Laxminarayan Das • 1. Copper Wire Corrosion Problems:

    Please let us know the specification used. Coatings proposed in the specification Vs actual coating supplied is the measure reason for this type of corrosion. You are aware that these coatings are thin film coatings, hence water vapour permeation rate need to be measured in the line of techniques adopted for thin film PE etc. company manufacture those never think of checking coating properties through EIS and other advanced techniques. In short we invest less time and money in product development and spend more time over product application and Product Promotions. We need to admit here the fact that whenever such coating usages are procured/used/specified we mainly look into polymer involved not the enriched value it provides after suitable modification, Stoarages w.r.t. quality deviation due to internal polymerisation etc.

    2. REBAR CORROSION ISSUES:
    In India, best qualities of REBARS available and even manufactured by SSI & MSI. It is the duty of users to look into, the problems they are facing whether attributed to the System of vendor approval/Inspection/Tendering they are following or it is the standard/code, which is responsible. In my opinion, every user need to go through contents of standards thoroughly and apply suitably to their organisation. In this case no such extra corrosion check is essential to be added in IS 1786. Suppllier need to just check the TMT process and verify the same through Optical microscopy during supplier approval. In addition to this user can frame their own specifications, where they can have addition/deletion to ----- clauses. However it is dangerous and boomerang, If user with low knowledge do this activities.

    SUGGEST LET THE USER OPEN UP ASSET INTEGRITY DEPARTMENT AND LOOK THE MATTER IN BROAD WAYS
    2 days ago

    ReplyDelete
  7. Shankar Sethuramalingam • @ Mr Manickam , What you say is absolutely correct, but some suppliers are using the name of these satandards to justify that their products are corrosion resistant while there is no specification to validate that . They are just using the IS 1786 for advertising their products when all that it provides is some criteria for physical and chemical properties and nothing related to corrosion prevension.
    7 days ago

    ReplyDelete
  8. Laxminarayan Das •
    1. Copper Wire Corrosion Problems:
    Please let us know the specification used.
    Coatings proposed in the specification Vs actual coating supplied is the measure reason for this type of corrosion. You are aware that these coatings are thin film coatings, hence water vapour permeation rate need to be measured in the line of techniques adopted for thin film PE etc. company manufacture those never think of checking coating properties through EIS and other advanced techniques. In short we invest less time and money in product development and spend more time over product application and Product Promotions. We need to admit here the fact that whenever such coating usages are procured/used/specified we mainly look into polymer involved not the enriched value it provides after suitable modification, Stoarages w.r.t. quality deviation due to internal polymerisation etc.

    2. REBAR CORROSION ISSUES: In India, best qualities of REBARS available and even manufactured by SSI & MSI. It is the duty of users to look into, the problems they are facing whether attributed to the System of vendor approval/Inspection/Tendering they are following or it is the standard/code, which is responsible.

    In my opinion, every user need to go through contents of standards thoroughly and apply suitably to their organisation. In this case no such extra corrosion check is essential to be added in IS 1786. Suppllier need to just check the TMT process and verify the same through Optical microscopy during supplier approval. In addition to this user can frame their own specifications, where they can have addition/deletion to ----- clauses. However it is dangerous and boomerang, If user with low knowledge do this activities.
    SUGGEST LET THE USER OPEN UP ASSET INTEGRITY DEPARTMENT AND LOOK THE MATTER IN BROAD WAYS
    1 day ago

    ReplyDelete
  9. Laxminarayan Das • REBAR CORROSION ISSUES:
    In India, best qualities of REBARS available and even manufactured by SSI & MSI. It is the duty of users to look into, the problems they are facing whether attributed to the System of vendor approval/Inspection/Tendering they are following or it is the standard/code, which is responsible.

    In my opinion, every user need to go through contents of standards thoroughly and apply suitably to their organisation. In this case no such extra corrosion check is essential to be added in IS 1786. Suppllier need to just check the TMT process and verify the same through Optical microscopy during supplier approval. In addition to this user can frame their own specifications, where they can have addition/deletion to ----- clauses. However it is dangerous and boomerang, If user with low knowledge do this activities.

    SUGGEST LET THE USER OPEN UP ASSET INTEGRITY DEPARTMENT AND LOOK THE MATTER IN BROAD WAYS
    1 day ago

    ReplyDelete

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