Sightglass in pressure vessels
Sightglass in pressure vessels
(OP)
Does anyone know the code case number which deals with the use of glass, specifically sightglasses, for use in pressure vessels?
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Sightglass in pressure vessels
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RE: Sightglass in pressure vessels
Do you have a specific question?
Paul Ostand
www.ostand.com
RE: Sightglass in pressure vessels
RE: Sightglass in pressure vessels
One would handle it as an exception. I certainly may be incorrect, but this is my thought. If you find out differently, please let us know here.
Try the manufacturers of the hardware as well as the glass.
Best wishes
Paul Ostand
www.ostand.com
RE: Sightglass in pressure vessels
RE: Sightglass in pressure vessels
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RE: Sightglass in pressure vessels
Paul Ostand
www.ostand.com
RE: Sightglass in pressure vessels
I wrote the sight glass section of our company's mechanical integrity standard and have used sight glasses (including those as the pressure barrier for process cameras) since the 1980's. I would only specify a fused-glass unit and not trust a tempered glass unit in pressure service.
You can install them between standard flanges and treat them similarily to metal spacers. I have also installed dimensionally identical replacements for tempered glass units to increase the level of safety. They are a little more expensive than tempered units, but pay for themselves after one replacement since manufacturer's specify replacement when a tempered unit is removed after initial compression (e.g., cleaning).
You will get different view areas for a given size from different manufacturers depending on the metal used as the outer ring. The two major suppliers I trust are J.M. Canty(Fuseview)and L.J. Star(Metaglas). Contact them and make your decision.