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Simple question - Take a 2:1 SE Head on a Div I vessel. What is the maximum number of nozzle openings (in terms of area m2 relative the the dished area) that I am allowed to place on the head? Are there any restrictions on this by ASME Code? If so which para? Many thanks.

Equipment: Shell and Tube Heat Exchanger designed to ASME Div 1 This is a simple question. If the tubesheet of the exchanger was designed and built to TEMA in 2000, and if there is a need to re-rate and re-certify the exchanger now, will the calcs have to be based on the latest ASME VIII...

Location: Offshore Platform ============================= I understand Hastelloy C-276 reacts with sodium hypochlorite which is used on offshore platforms to prevent marine growth/fouling of pipework. 2 ppm is what we will normally specify for continuous dosing and for intermittent shock...

Thanks.

Design Code: ASME Section VIII ============================== Can someone please tell me if the weep holes at the reinforcing plate is sealed after the vessel is put into operation? Or should it be left open? Why? I understand the weep hole is to detect leakages in welds during hydrstatic...

Location: Offshore Platform Fluid: Seawater Capacity: 46,000 bpd ===================== The water Injection System consist of a Deaerator Tower, Coarse and Fine Filters. In the past we have been using glass flake lining and Monel/Super Duplex Stainless Steel internals. However, we are...

Location: Offshore Platform Fluid: Seawater Capacity: 46,000 bpd ===================== The water Injection System consist of a Deaerator Tower, Coarse and Fine Filters. In the past we have been using glass flake lining and Monel/Super Duplex Stainless Steel internals. However, we are...

Thanks guys. Appreciated. Great article too.

I came across an article by a Heating Oil Supplier (Therminol) saying that if the supply temperature exceeds 175 deg C, it is prudent to have the piping pressure class in 300# minimum (even if the design pressure/temperature rating allows the applciation of 150#) to ensure "leak tightness" of...

pve5, The answers are: 1. Div I Year 2000 Edition 2. Tubesheet is CS + SS Overlay 3. Its a U-Tube bundle with a single pass partition plate on the channel side. Thanks.

Equipment: TEMA S&T Heat Exchanger, BEU type. Design: ASME Div 1/TEMA Service: Crude Oil Cooler Location: Offshore Platform Tubeside, 316L, Shell side CS (Cooling water) ============================================= We plan to rerate an existing S&T Hex which has already been operating for a...

Thanks, it did.

Simply put, has anyone heard of the 10/13 Rule in ASME VIII with regards to the design of shell/tube side desing pressures? In the past we have used the 2/3 rule whereby if the low pressure side design pressure is less than 2/3 of the high pressure side, a rupture disk shall be installed in the...

You may be right, but depends upon which side of the exchanger we are looking at. It is quite like a rectangular block, with six sides. The nozzle headers take up two sides. In the past the vendor has supplied CRA (duplex/superduplex) shrouds welded on the exchnager to prevent exposure of the...

No, it is not going to be painted. The PCHEs are constructed of many "thin" corrugated plates bonded/welded together. Think of it as a plate heat exchanger except that the heat transfer efficiency is much higher which allows the heat transfer area to be reduced, hence its compactness. The plate...

Marine environment = Tropical salt-laden environment such as experienced on an offshore platform Service fluid, Hot side: Compressed clean/dry hydrocarbon gas Cold side: Cooling water (potable quality) with O2 scavenger injected and controlled chloride content.

We are looking at using PCHE (heatric) for a clean gas/cooling water service operating at temperature above 50 deg C (but below 100 deg C) in an offshore marine enviroment. From what I understand, 316L is not accpetable for application above 50 degC in an offshore marine environemnt and due to...

We are looking at using PCHE (heatric) for a clean gas/cooling water service operating at temperature above 50 deg C (but below 100 deg C) in an offshore marine enviroment. From what I understand, 316L is not accpetable for application above 50 degC in an offshore marine environemnt and due to...

Code: ASME Sect VIII, Div 1 Is it normal to request for a head forming test piece for Duplex materials i.e. semi ellip from a flat plate? What are the concerns? Does cold working affect mechaical and corrosion properties of the duplex material? Thanks in advance.

Metengr, it is ASTM A351 CF8M body. Any suggestions?