Technical data
Work related to tanks and cooling towers
Work related to tanks
Please use flexible joints as a measure against the occurrence of problems related to tanks in the event of earthquakes (tank cracking and rupture, connecting pipes breaking off, etc.)*
Please refer to the following installation examples of TOZEN products.
●When using flexible joints vertically
When installing flexible joints vertically, we recommend LINERFLEX and Pure Joint, which are highly flexible x-x’ and y-y’ (both in the perpendicular direction).
●When using flexible joints horizontally
When installing flexible joints horizontally, we recommend Pure Joint, which easily absorbs displacement in the x-x’ (axial direction) and y-y’ (perpendicular direction).
※(e)
Piping near tanks is as follows.
-
(2)
For connections excluding drainage and vent pipes from water reservoirs and elevated tanks, install bellows type flexible joints for copper plate and stainless copper plate tanks, and synthetic rubber flexible joints for FRP tanks.
-
(3)
Use JIS K 6741 (rigid polyvinyl chloride pipes) or JIS K 9798 (recycled rigid polyvinyl chloride foam 3-layer pipes) on overflow pipes for FRP tanks
-
(4)
The piping overview is as per the standard drawings (Installation 11: Topography and support overview of piping connected to equipment (2), Installation 68: Overview of piping connected to water reservoirs.
Extracted from 2.4.7 Water supply piping, p. 62-63, “Public Construction Work Standards Specifications”,
FY 2019 edition, editorial supervision by Government Buildings Department, Minister’s Secretariat, Ministry of Land, Infrastructure, Transport and Tourism
Installation around cooling towers
(c)
Piping connected to cooling towers must be sufficiently supported so that its weight is not directly applied to the cooling towers. In addition, cooling water inlets/outlets and makeup pipe inlets are to have synthetic rubber flexible joints installed and cooling water outlets are to have strainers fitted as per 2.2.9 “Flexible joints.”
Extracted from 2.4.2 Hot and cold water, brine, and cooling water piping, p. 59, “Public Construction Work Standards Specifications”, FY 2019 edition, editorial supervision by Government Buildings Department, Minister’s Secretariat, Ministry of Land, Infrastructure, Transport and Tourism
| Extracted from Installation 54 | Piping overview around cooling towers |
Piping overview
Editorial supervision by Government Buildings Department, Minister’s Secretariat, Ministry of Land, Infrastructure, Transport and Tourism
“Public Construction Equipment Work Standards Diagrams”, FY 2019 edition
Extracted from Installation 53 Piping overview around cooling towers, p.159
| Number | Name |
|---|---|
| ① | Makeup water GV or BV |
| ② | Synthetic rubber flexible joints |
| ③ | Overflow piping |
| ④ | Synthetic rubber flexible joints |
| ⑤ | Drainage pipe |
| ⑥ | GV or BV |
| ⑦ | Strainer |
TOZEN recommended product LINERFLEX・PURE JOINT
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