Installation Manual Underground Storage Tanks

更新时间:2023-06-25 12:49:25 阅读: 评论:0

Section 1Equipment for Tank Installations. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 Section 2Shipping, Unloading and Storage of Tanks. . . . . . . . . . . . . . . . . . . . . . . . . 2 Section 3Pre-Installation Testing. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 Section 4Backfill Specifications. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 Section 5Size of Excavation Requirements. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 Section 6Bedding and Backfill Instructions for Tanks installed with
ZCL Anchor System. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9 Section 7Alternate Anchoring Systems. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13 Section 8Installing Tanks without Anchor Systems. . . . . . . . . . . . . . . . . . . . . . . . . . . 14 Section 9Installation of Tank Internal Piping. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14 Section 10Adding Tanks to Existing Installation. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14 Section 11Double Wall Tank Monitoring Systems. . . . . . . . . . . . . . . . . . . . . . . . . . . . 15 Section 12Turbine Enclosure Sumps and Collars. . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
Exhibits A& B: Standard Sizes of Aggregate. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19 & 20 ZCL Specification Sheet. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21 & 22 Installation Checklist and Inspection Report. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23 & 24
indicates hazards which, if not avoided, could cau
death, rious personal injury or significant property damage.
indicates hazards which, if not avoided, may
cau personal injury or property damage.
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The instructions are issued as a guide for the installation of ZCL underground storage tanks, bad on successful experience in a wide variety of situations.ZCL Storage Tanks have been investigated by Under-writers’Laboratories of Canada and comply with the requirements of ULC-S615-98 Standard for Reinforced Plastic Underground Tanks for Flammable and
Combustible Liquids, including Petroleum products only or Petroleum products, Oxygenates and Oxygenated Fuel Blends (as appropriate).
The installation instructions are applicable for all ZCL underground storage tanks.
Compliance with the procedures and instructions contained in this Installation Manual are necessary for the proper installation of ZCL tanks. Failure to comply will void the warranty for the tank(s) and may cau tank failure.
In addition to the Manufacturer’s Instructions, the installation must comply with the National Fire Code, and all applicable Federal, Provincial or Municipal construc-tion, safety and environmental codes and regulations.
For any questions regarding the interpretation of the Installation Instructions, or if there are any unusual site conditions, contact your ZCL Reprentative.
The prence of a ZCL Reprentative does not relieve the installer’s responsibility for appropriate installation of the tanks according to the following instructions.
The following equipment is recommended for installation of ZCL Tanks:
1.Excavation equipment capable of producing a level bottom hole and placing backfill material at any point in the excavation
2.Crane or lifting equipment capable of lifting and placing the tanks and associated Tank Anchors
3.Spirit level or transit
4.Tape measure – 15 m (50 feet)
5.Tamping rod(s) (A long wooden shovel handle is satisfactory.)
6.Pipe wrenches & appropriate pipe joint compound
7. Pressure gauge, fitting and valve. Gauge must be capable of accurately measuring 35 kPa (5 psi) pres-sure with minimum 5 kPa (1/2 psi) increments. Fitting must adapt to 4 inches NPT threaded opening.8.Source of pressurized air capable of 35 kPa (5 psi)9.Soap and water solution (for freezing weather u soap, water and anti-freeze solution)10.Soft bristle paint brush or soft cloth 11.Hand shovel(s)
12.  2 m (6 foot) double lifting chain or sling with hook
ends (Larger tanks (10 foot) require a 4-part lifting chain asmbly.)
13.Soil compacting equipment (if necessary)
Section 3Pre-Installation Testing
All ZCL Tanks are tested and certified free of leaks at the factory, prior to shipment. All tanks must be tested in the field, prior to installation,to identify any damage resulting from shipping and handling, and to validate the ZCL Warranty. This test shall consist of:
1. A detailed Visual Inspection of the exterior of the tank, and
少儿学英语2. An Air/Soap Leak Test.
发带编发3. Prior to pressure test, ZCL requires that all plugs are removed, redoped and then tightened.
A.Visual Inspection
All tanks shall be visually inspected over entire exterior surface. Special attention should be given to locations of shipping cradles and attachment straps. If any damage is prent, the tank shall not be i
nstalled until inspected and repaired (if necessary) by ZCL Reprentative.Do not attempt unauthorized repairs.
Inspect for the following defects:1. Visible fractures in the walls or ribs
2.Delaminations
3. Scratches, abrasions, or gouges extending more than 1.5 mm (1⁄16inch) into the surface of the fiber-glass
4.Stress cracks (The are very fine, cloly spaced cracks extending deep into the fiberglass)
B.Leak Test (Single Wall Tanks)
The Soap Bubble Test is ud as a highly nsitive test for detection of leaks and to verify the integrity of all Single Wall Tanks. The procedure is as follows:
1. Position and clean tank (if necessary) so that entire exterior is visible.
2.Apply air pressure between 28 and 35 kPa (4 to 5psi) to tank and hold.
2
(6 inches)
卡巴拉生命之树Tanks must be shipped on support saddles provided.Position saddles near each end of tank with weight distributed evenly. Do not place saddles under centre of tank. U nylon straps to hold tank . Position straps over tank at the saddle locations. Do not strap at center of tanks. Do not u cables or chains to hold tanks.Do not overtighten straps .
Move tanks by lifting and tting only. Do not move tanks by rolling or dragging. Lift by lift lugs only.
Two lift lugs are provided on all tanks (4 lugs for 10-foot diameter tanks); u all lugs for lifting. U double sling with minimum 2 meter (6 feet) length for lifting.
Tanks must be unloaded by lifting on lugs provided.Do not drop or roll tanks off truck . Place tanks care-fully on shipping cradles or on level, smooth ground, free of rocks or debris. Secure tanks against movement by u of chocks. Under wind conditions tank may have to be tied down.
2. LIFT SLING (6 F e e t )
3. HANDLING
4. VISUAL INSPECTION
3
3.Wet entire exterior surface of tank with a soapy water solution using a soft cloth or brush. During freezing conditions a suitable anti-freeze (such as windshield washer fluid) may be added to the soap and water mixture.
4.Inspect surface of tank over 10-to 20-minute peri-od for the formation of air bubbles which would indicate a leak.
5.After completion of test, relea air pressure and reinstall vent plug.
Should a leak be detected, do not attempt repairs.Contact your ZCL Reprentative.
C.Leak Test for Double Wall Prezerver Tanks with Dry Annular Space
For ZCL Double Wall Prezerver tanks, the leak test is conducted in 2 stages, to test the primary (inside) and the condary (outside) tanks parately. The tests must be done in accordance with the following procedures in the quence indicated:
Air Leakage Test (Primary Tank)
This test places a 35 kPa (5 psi) pressure on the pri-mary tank while the annular space (between the inner and outer walls of the tank) is aled. This annular space is then monitored to obrve for a ri in pressure which may indicate a leak.
1.Position the tank on flat level area, free of rocks or debris and clean exterior (if necessary). When applicable, u suitable protective pads to roll tank during air/soap test.
2.Mount test equipment as indicated in diagram.Install pressure gauges at locations shown. Check gauges for initial ‘zero’reading.
3.All ZCL Prezerver tanks are manufactured with at least one monitor well fitting attached to the out-side of the tank which is open only to the annular space between the two tank walls. The monitor well fitting must be connected through a ho with a shut-off valve to another fitting (preferably on the manway cover if provided) leading directly into the
primary tank. Clo valve between primary tank and annular space.
4.Connect air supply to any other manway fitting or other convenient fitting leading directly to the pri-
mary tank. Pressurize the primary tank to 35 kPa (5 psi) maximum and hold.
Allow a few minutes for the air temperature in the tank to stabilize. If necessary, add or remove air to achieve required 35 kPa (5 psi) test pressure.5.Obrve the gauge on the monitor well for minimum 30 minutes. A ri in pressure from the zero value may indicate a leak in the primary tank. During this period apply a soapy water solution and soap all tank fittings, manways, flanged nozzles and covers,etc., to verify leak tightness before proceeding.
Pressure gauge readings can be affected by changes in ambient air temperature.Allow for pressure variations when tanks are subject to abrupt temperature changes.
Soap Bubble Test (Secondary Tank)
The Soap Bubble Test is ud as a highly nsitive test for detection of leaks and to verify that the
condary (outside) tank has not been damaged during transportation.
兰州百合怎么吃The Soap Bubble Test may be performed immediately following the Air Leakage Test.
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6. Open valve in the small line to the monitoring well and allow the air pressure to transfer from the primary tank to the annular space between the two tank walls. If necessary, add more air to the
5. AIR LEAKAGE TEST—Primary Tank
CAUTION
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primary tank until the pressure on both gauges reads 35kPa (5 psi).
7. Wet the entire exterior of tank with soapy water solution. During freezing conditions a suitable anti-freeze (such as windshield washer fluid) may be added to the soap and water mixture.
8. Inspect entire exterior surface of tank over 10- to 20-minute period for the formation of bubbles which would indicate a leak. Do not leave pres-surized tanks unattended.
9. After completion of test, relea air pressure. Dis-connect and remove manifold ho test kit and replace vent plugs in the primary tank and monitor well.
Should a leak be detected, do not attempt repairs.Contact your ZCL Reprentative for further instructions.为自己骄傲
D.Leak Test for Hydrostatically
Monitored Double Wall Prezerver Tanks with Annular Space Filled.
This tank has a hydrostatic monitoring system that includes a factory-installed, non toxic monitoring fluid in the annular space between the inner and outer walls.The monitoring fluid is a brine solution (30% calcium chloride). In the unlikely event of a tank leak, this fluid will leave a visible trace on the tank.
Rervoir Level Check
Remove the 100 mm (4 inch) plug from the rervoir fitting and inspect for prence of monitoring fluid. If the rervoir is empty, contact your ZCL Reprentative.
Primary Tank Test – Outer Wall Inspection
1. Position tanks on flat level surface free of rocks or debris. If necessary, u suitable protection pads to roll tanks.
2. Tighten any loo fitting plugs connected to the rervoir or to the annular space to avoid leakage
of monitoring fluid.
3. Inspect entire exterior surface of tank for any trace of monitoring fluid. If any leak is obrved as indi-cated by the prence of monitoring fluid, do not attempt repairs . Contact your ZCL Reprentative immediately.
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4. Connect air supply to a manway fitting or other convenient fitting leading directly to the primary tank. Pressurize the primary tank to 35 kPa (5 psi)maximum and hold.
5. Apply soapy water solution and soap all tank fit-tings, manways, flanged nozzles and covers, etc.If leaks are obrved, as indicated by bubbles,tighten plugs or bolts and retest.
吹牛大王历险记Primary Tank Visual Inspection
Relea air pressure from primary tank. Remove a primary tank fitting plug from each end of tank. Conduct visual inspection of interior or primary tank and obrve
for any accumulation of monitoring fluid at the bottom of the tank.
Confirm that any liquid found is monitoring fluid (brine) or condensation (water).
If prence of monitoring fluid is detected, do not attempt repairs . Contact your ZCL Reprentative immediately. Replace and tighten plugs.
E.Compartment Tanks
1. The double wall bulkhead in the Prezerver Compartment Tank is constructed to be inter-connected with the annular space between the two tank walls.
2. The bulkhead in Greentank Single Wall Compartment Tanks is also double wall. It is not necessary to conduct a pressure test if the bulk-head is shipped under vacuum or is brine filled.If testing of the bulkhead of single wall compart-ment tanks is required, connect and transfer air pressure from the primary tank via the monitor well fitting.
Do not connect air supply from a compressor directly to the monitor well fitting.
6. SOAP LEAK TEST—Secondary Tank

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