Occasionally, nameplates on ammonia refrigeration vessels become illegible or detached altogether. Does this mean the vessel must be replaced? Can a replacement nameplate be installed? If I have a photo of the old nameplate, is that sufficient? Do I need to contact a regulatory agency? These are just some of the questions that you may […]
Pipes are one of the areas of an ammonia refrigeration system most vulnerable to leak. Systems often have hundreds, or even thousands of feet of ammonia pipes serving a variety of purposes. Historically, IIAR Bulletin No. 110 has been the RAGAGEP which governs ammonia pipe inspections and maintenance. §6.7.1 requires that: All uninsulated piping and […]
Pressure vessels are used pervasively in the ammonia refrigeration industry for a variety of different functions. It is required that every vessel be constructed in accordance with ASME B&PV Code Section VIII, Division 1. The quickest way to verify that the design and construction requirements have been met is by inspecting the vessel nameplate. The […]
ASME A13.1 Scheme for the Identification of Piping Systems provides minimum requirements for the identification of hazardous materials conveyed in piping systems. The document applies to general industry and does not address specific chemical (ammonia, chlorine, etc.) labeling requirements. Basic requirements contained within ASME A13.1 include: Pipe labels must include arrows to indicate flow direction (§3.1) […]
I recently received an email from a client asking if it is allowable to remove a pressure vessel nameplate and position it in another location on that same vessel. Here is the response that I gave: Dear John, Unfortunately, ASME National Board does not allow nameplates to be removed unless approved by an inspector and an updated […]
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