This innovative and trend leading solution was put in service in July 2017. This is the first of 3 plants and will be finalized in 2020/2021. Totally will these cover 18.000 PE.This innovative and trend leading solution was put in service in July 2017. This is the first of 3 plants and will be finalized in 2020/2021. Totally will these cover 18.000 PE.

This first plant covers 6.700 PE and is designed with Ø3m pipes that consist of 5 tanks with lengths from 35-45 m. The system is constructed by Stord Municipality and the consulting firm Norconsult AS. All these where produced at  Haplast AS at Furuflaten in 15-18m lengths. Transported by ship to Stord and then finally installed on 5 m depth. The whole system, except for the entrance and the show room, is underground, and you can hardly see anything on the surface.The whole system works without any pumps or mechanical cleaning. The needed service includes inspection and emptying of the sludge storage tanks when these are full. The system consist of 1 central valve tank with 84 valves to control the emptying of bottom sludge on the 2 settling tanks and transport it by even fall to the 2 sludge storage tanks. Only driven by the hydraulic height difference.

Production and delivery:
The tanks were produced at Haplast AS at the North of Norway from 6m length. These were welded together to the needed tank lengths and included all connections between tanks and the in and outlet of sewer systems needed tank lengths and included all connections between tanks and the in and outlet of sewer systems.When the production was finished, the tanks were transported to a neighbouring harbour, stored and lifted on the deck and transported to Stord. (Only 200m from the installation site). 

Installation at the site:
The valve tank was installed by the company Servitech AS at Furuflaten. Meaning that the only needed job for the PE welders at the installation site, were to connect the tanks together and connect the piping systems around.welders at the installation site, were to connect the tanks together and connect the piping systems around. Haplast delivered the tanks and all the needed distribution chambers in the project.

The client’s remarks:
The client was very satisfied with the cooperation and the work done by all suppliers and installers in this project. Further he had the option to install the next 2 plant with the same actors inn-volved.This work is already ongoing and sched-uled delivery of the next 2. plant is in June 2020 and the delivery of the 3. plant is expected late 2020. Haplast AS: Haplast is a pipe producer established in 1961 by Svein Hamnvik at Furuflaten. The small village Furuflaten is located near Tromso. (Above the Artic Circle in North Norway).

Haplast AS:
Haplast is a pipe producer established in 1961 by Svein Hamnvik at Furuflaten. The small village Furuflaten is located near Tromso (Above the Artic Circle in North Norway).The main product was PE pipes up to maximum Dy=1,0m. The factory could produce long pipelines directly into the sea. In 1978 the factory started to produce KRAH pipes with BAUKU Technology in South Norway and the line was moved to Furuflaten in 1984. The Technology was step by step changed into KRAH Technology and then in 2013 the production line was rebuild to the newest KRAH Technology and the dimension limit expanded to Ø3m. The development has continued and today Haplast produce many solutions made from KRAH pipes/ Technology possibilities.

Some other special solutions:
• Water chambers which are 100% waterproof
• Chemical Tanks with 1 or 2 barriers
• Water magazines
• Solutions to road Authorities
• Long length PE pressure pipelines.

Author: 
Haplast AS
Industriveien 6
9062 Furuflaten
+47 77 71 12 20
www.haplast.no