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GUIDELINES FOR CORROSION RESISTANT WELD METAL OVERLAY OF DIGESTER VESSELS IN ALKALINE PULPING SERVICE

Corrosion, Corrosion prevention, Digesters, Nondestructive tests, Stainless steel, Welding, Overlays

Provider: TAPPI
Shipping: Available for download - Link will be provided in My ComplianceOnline section

Price: $35.00
Product Details

This document provides guidelines and describes quality control and testing procedures for application of either stainless steel or nickel-base corrosion resistant weld metal overlay (hereafter referred to as CRO) on internal surfaces in continuous digesters, impregnation vessels, and batch digesters in kraft and soda service. These guidelines provide information concerning overlay properties and application procedures that affect the performance of the overlay.

The scope for CRO in digester vessels should specify the:

Area to be overlaid.

Welding materials to be used.

Surface preparation required.

Criteria for deciding where it is necessary for buildup or repair of the substrate, and detailed procedures for this.

Jurisdictional regulations and applicable Codes to be complied with.

Procedure documentation.

Work-product documentation required.

Quality control and testing plan.

Safety and job support requirements (scaffolding, ventilation, power supply).

 

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