2022年7月30日 · NFPA 11 Section 5.4 deals with internal floating roofs. Some types of internal floaters (i.e. steel pontoon) can use a foam dam and a rim-fire only foam system. Other types of internal floaters require full-surface foam systems, and thus a foam dam would be wasted money.

2007年5月16日 · NFPA11 Table 5.3.5.3.1 indicates spacing between the foam discharge outlets depending on the 'foam dam'. It is not clear if the measurements for the foam dam are for the height (as per 5.3.5.4.3.1 & 2), or the distance from the shell (as per 5.3.5.4.4).

2022年7月31日 · I want to confirm an information about the hight of the foam dam. We disagreed with a contractor about the interpretation of the following statement in the designe criteria: '' Dam height shall be at least 2 in. (51 mm) higher than any burnout panels in metal secondary seals''

2009年4月20日 · I always thought that if your foam dam was 2" higher than the compression plate seal, you did not need burn-out panels. If you pipe through the compression plate seal you need some kind of flexible connection so the seal can accomodate tank …

2011年10月20日 · Iam currently designing a foam chamber (particulary ansul). In the catalogue, it is mentioned the flow range between 40 psi to 100 psi which corresponds to cetain K-factor. The thing is, the incoming pressure at the flanged inlet of the foam chamber is 130 psi.

2002年6月27日 · We took immediate action, and right now we are in the investigation process, but to answer your questions; most of the oil was in the foam dam area and there were some pools all around the floating roof.

2013年1月14日 · According from what I know, one of the best locations to install a foam chamber is upwind. It means that if you have an predominat wind pointing north, you could install it at south position, wind east/foam chamber west, etc.

2018年12月7日 · Series connection arrangement of foam bladder tank is possible? Based on computation 4000 Ltrs of tank required. Can this be addressed with 2000 Ltrs x 2 nos of tanks?

2004年5月29日 · At our plant we used previously Fluorprotein Foam concentrate (CRODA) and we gonnag change it over with AFFF. How do you think if it's a problem for the foam/water solution makers (the same concentration of foam concentrate & water - 3%)

2002年1月10日 · The proportioning system can be tested using foam concentrate or an environmentally friendly alternative. I've not been involved with a test on a bladder tank, but am sure it can be done. If you're looking for someone to …