Installation instructions for horizontal fiberglass tanks

The manufacturer shall provide each tank with installation instructions, which shall constitute the minimum requirements described in this section; reinforced plastic (FRP) underground storage tanks shall be handled and installed in accordance with the regulations established by the competent authority. In addition, the following shall be strictly observed The minimum requirements specified in the text.
  
In cold weather conditions, special measures must be taken to ensure that without the use of calcium chloride, in the absence of ice, snow or other frozen materials, in the tank and without the compaction of ice, snow or other frozen materials In the case of backfill, an unfixed firm bed. In this case, the backfill should be completed within one working day.
  
Before installation, the fuel tank should be visually inspected to determine if there are any signs of damage or defects.
  
If there is more than one water tank in an excavation, and the distance between the water tank and the excavation side is 450 mm, the excavation should leave a gap of at least 600 mm between the water tanks; all rocks, boulders and Any other outstanding material.
  
Excavation and any dewatering should be carried out in a way that maintains a firm and even foundation support for laying the water tank.
  
The tank should be embedded with at least 300 mm pea gravel or washed gravel in the excavation.
  
The water tank must be carefully placed into the excavation using a lifting belt, and a spreader rod should be used when necessary. Under no circumstances should a chain or wire sling be used around the water tank, nor any other method that may cause damage.