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  1. QUEENCHEM

    NH3 Ammonia cold storage tank (Inspection)

    Dear gents, we (Operation & Maintenace team) have been requested by a Customer to issue an Inspection Plan for the a. m. tank (volume 15,000 mt Operating conditions -33°C at 110 mbar g). Do you know any specific Code & Standards for such kind of plant? Thanks a lot in advance for your valuable...
  2. QUEENCHEM

    NH3 storage tank decommissioning and commissioning

    Dear all, in one of our project we shall inspect internally a NH3 storage tank. In order to allow such inspection we'll have to carry out a properly decommissioning and after the inspection the commissioning as well. Do you have some hints for this specific case? Thank you in advance for your...
  3. QUEENCHEM

    Safety analisys

    Dear all, may I have your opinion about the implementaion of a SAFEGUARDING MEMORANDUM (plant evaluation, study & planning, installation)? thanks a lot in advance.
  4. QUEENCHEM

    GTAW welding of TP304 vs TP304L

    Dear all, please just indicate to me your experience regarding GTAW welding of the a.m. austenitic steels. The main scope is piping manufacturing for chemical industry. Are there any reason to prefer one instead of the other? I thank you very much for your valuable opinion.
  5. QUEENCHEM

    chemical plant design

    Dear all, many thanks thanks for your helpful suggestions 1nd point of view! I just would like to specify some issues: - acc. to european law for safety we are obliged to apply fireproofing if the piping laying on the pipe-rack are in service with flammable material - of course we are...
  6. QUEENCHEM

    chemical plant design

    Dear all, we are doing design of industrial chem plants and we would like to know your opinion about conceptual design of pipe-racks and structure: is it better to employ steel or concrete (pls. consider fire proofing as mandatory)?

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