SAES-N-120 PDF – Extreme Erosion Resistant Refractories Installation Requirements

This article is about SAES-N-120 which is about Extreme Erosion Resistant Refractories Installation Requirements and download SAES-N-120 PDF for Mechanical and Insulation Engineers, supervisors and project managers, Mechanical QCs, Insulation QC Supervisors. This is saudi aramco standards of Heat Transfer Equipment Engineering based on international codes and standards and useful for Mechanical and Insulation Engineering knowledge to get job as engineers, QC Supervisors and QC managers, Engineering managers and technicians.

SAES-N-120 PDF Download

SAES-N-120

Extreme Erosion Resistant Refractories Installation Requirements

SAES-N-120 standard provides the requirements for the installation, testing, and inspection of extreme erosion-resistant refractory systems for process equipment and piping. Here are the key points regarding the scope and application of the standard:

• This standard applies to the installation, testing, and inspection of extreme erosion-resistant refractory systems.
• For equipment and refractory systems not specifically covered by this standard, it is recommended to consult with the Saudi Aramco Engineer to determine the applicability of this standard.
• The SAES-N-120 standard can be attached to and made a part of purchase orders to ensure compliance with the requirements.
• The standard covers both new installations of extreme erosion-resistant refractory and the repair of existing erosion-resistant refractory.

It is important to refer to the SAES-N-120 standard itself for detailed guidelines, specific requirements, and procedures related to the installation, testing, and inspection of extreme erosion-resistant refractory systems.

Industry Codes and Standards

Thank you for providing additional industry codes and standards related to welding, refractory testing, installation quality control, and surface preparation. Here is a summary of the codes and standards you mentioned:

American Society of Mechanical Engineers:

• ASME SEC IX: Qualification Standard for Welding & Brazing Procedures, Welders, Brazers, and Welding and Brazing Operations.

American Society for Testing and Materials:

• ASTM C133: Test Methods for Cold Crushing Strength & Modulus of Rupture of Refractory Brick & Shapes.
• ASTM C134: Test Methods for Size and Bulk Density of Refractory Brick and Insulating Firebrick.
• ASTM C862: Practice for Preparing Refractory Concrete.

American Petroleum Institute:

• API RP 936: Refractory Installation Quality Control Guidelines – Inspection and Testing Monolithic Refractory Linings and Materials.

Steel Structures Painting Council:

• SSPC SP 5: White Metal Blasting.

These codes and standards provide guidelines, procedures, and quality control measures for welding, refractory testing, installation, and surface preparation in various industries. It is important to refer to the specific codes and standards for detailed requirements and instructions related to each topic.

Installation of Refractory

Outlines the requirements for the installation of refractory. Here is a summary of the key points:

10.1 General:

• Expired material should not be used.
• Packages should only be opened when required.
• The liquid used for mixing refractory must comply with the manufacturer’s guidelines.
• Admixtures should not be used unless approved by the manufacturer and reviewed by the Saudi Aramco Engineer.
• Linings should be applied with temperatures of the backing surface between 5°C and 37°C.
• Linings must be protected from extreme conditions by maintaining the ambient temperature between 10°C and 32°C for the entire curing period.
• Necessary precautions should be taken to achieve the temperature limitations.

10.2 Mixing:

• The mixing instructions, installation instructions, and precautions provided by the Refractory Manufacturer must be strictly followed.
• A Hobart type commercial mixer (or equivalent) with stainless steel mixing bowls, beater, and wire whip should be used.
• Only mix the quantity that can be applied within 15 minutes after adding liquid. Any mixed refractory not used within 15 minutes should be discarded.
• All equipment, mixing bowls, and tools must be kept clean and free of foreign material.

10.3 Sample Testing Prior to Installation:

• The procedure for sample testing is provided, which includes selecting random samples from each batch or lot and conducting tests for cold crushing strength and bulk density.
• Any sample that does not meet the minimum published strength or density will result in the rejection of the complete batch.

10.4 Application:

• The mixed refractory should be thoroughly hand packed into the hexsteel, filling anchorage holes and eliminating air bubbles and pockets.
• Care should be taken to prevent overlaying of lining material over the hexsteel.
• The refractory should be screeded smooth and flush with the face of the hexsteel, ensuring the hexsteel pattern remains visible.

10.5 Sample Testing During Application:

• Samples should be taken during each shift that refractory is being applied.
• Samples should be in the form of a 50 mm cube and tested for density and cold crushing strength.
• Drying-out temperatures and cycles should be followed as specified, and testing should be carried out by an experienced laboratory.
• Physical properties of the refractory should meet the required values after dryout.

It’s important to refer to the full standard, SAES-N-120, for detailed instructions and additional requirements regarding the installation, testing, and inspection of extreme erosion-resistant refractory systems.

Curing and Dryout

The section you provided pertains to the curing and dryout process for new linings. Here is a summary of the key points:

11.1 General:

• New linings must be cured and dried out following the recommendations of the Refractory Manufacturer and the standard procedures outlined in sections 11.2 and 11.3.

11.2 Curing:

• If forms were used during placement, they should remain in place for the manufacturer’s specified curing period.
• During the curing period, the ambient conditions should be maintained between 5°C and 32°C.
• Exposed lining, except for chemically bonded material, should be cured using a fine water spray, damp cloth, or a membrane-curing compound.
• Lined equipment should not be moved during the curing process.

11.3 Dryout:

• Thermocouples should be installed 13 mm from the newly installed lining surface to monitor the temperature.
• The maximum dryout temperature should be controlled to avoid damaging the lining system.
• Thermocouples should be installed on the refractory side and on the external surfaces of equipment to measure temperature differentials between the metal and refractory.
• Unless specified otherwise by the Refractory Manufacturer, the dryout procedure should follow the guidelines provided in Table 5 of API RP 936 and Section 11.2.2.

It’s important to refer to the full standard, SAES-N-120, for detailed instructions and additional requirements regarding the curing and dryout process for extreme erosion-resistant refractory systems.

FAQs about SAES-N-120 PDF Download

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