Surge Tank: Difference between revisions
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A combination of age and inadequate repairs in the past have led to a number of known deficiencies with the surge tank. These deficiencies have both functional and (to a much lesser extent) aesthetic implications. | A combination of age and inadequate repairs in the past have led to a number of known deficiencies with the surge tank. These deficiencies have both functional and (to a much lesser extent) aesthetic implications. | ||
All issues are as identified in January 2022. These issues should be corrected as soon as possible. | |||
* There is no modulating valve on the drain return. The impact of this is described in the [[#Theory of Operation|theory of operation]]. According to the [[Pool Annual Inspection#Pool Functionality|pool annual inspection]], 80% of the total flow to the surge tank must be from the gutters. It is difficult to maintain this operating status without a modulating valve. | |||
** There was, at some point, a Fisher valve installed. A stainless steel float ball, with piping for hydraulic control, is still present in the tank. It is not known when this was removed and replaced with manual isolation valves. | |||
* The isolation valves between the pool and surge tank are failing or have failed. It appears that in [[Club History#2016]], the pool drain valve failed to the point that it could no longer be turned. In response to this, an additional butterfly valve was installed <i>inside</i> the surge tank to allow the pool to be shut down (all water from the pool must be isolated). This is very risky, as the drain isolation cannot be accessed from outside the surge tank. Watching a service person open or close this valve is an "interesting" event. | |||
* The exit pipe is oddly routed, likely in response to a cheap fix when piping was replaced. The exit pipe should be straight, eliminating a multitude of 90's between the surge tank and the strainer basket. | |||
* The tank leaks at several penetration points. Rudimentary fixes with hydraulic cement have been attempted, but many are failing. | |||
* Multiple old penetrations exist, providing potential leak points. This is also an aesthetic issue. | |||
* The inside surface of the tank has deteriorated and must be stripped and coated for longevity. | |||
* There is no overflow pipe. It was capped-over at some point. This is a minor code issue. | |||
== Future Overhaul == | == Future Overhaul == | ||