Fibreglass Underground Storage Tanks Installation Instructions

Transcription

1 Env Fibrglass 8pp book 8/21/01 10:04 AM Page 1 TRADEMARK Fibreglass Underground Storage Tanks Installation Instructions Revised July 2002 Supersedes all previous editions. Fibreglass underground tanks must be installed according to these instructions and NFPA 30 and 31. Local codes may apply and should be consulted. Failure to follow these installation instructions will void the warranty and may result in tank failure. Proper installation of Fibreglass underground tanks is required to prevent tank damage and to insure longterm corrosion-resistant service. It is imperative to read, understand and follow the instructions below. The presence of an Envirotank/Maskell representative at the jobsite does not relieve the contractor of his responsibility to follow the published installation instructions. Any variances to the published installation instruction must be approved by Envirotank/Maskell in writing prior to the tank installation. In order to activate the tank s structural warranty, the tank installation must be performed by a trained contractor in accordance with these instructions. The Envirotank/Maskell installation checklist must be completed and signed by the installing contractor s representative. A copy of the installation checklist should be maintained by both the installing contractor and tank owner to validate any future warranty claim. 1) Handling 2) Bed and Backfill Lifting tanks Use installation lifting lug(s) to lift tank. Note: All lugs must be used. Guide the tank with guide lines. Do not use chains or cables around tank. DO NOT STAND ON OR UNDER TANK WHILE TANK IS BEING LIFTED. DO NOT ROLL OR DROP TANK. Only use lifting equipment to move tanks. Capacity of lifting equipment must be checked before moving tanks. Set tanks on smooth ground, free of rocks and foreign objects and rechock. If high winds are anticipated, the contractor is responsible for tying down the tanks to prevent damage from being moved by high winds. All excavated native soil must be replaced with approved backfill. DO NOT MIX APPROVED GRAVEL WITH SAND OR NATIVE SOIL. ALWAYS USE APPROVED GRAVEL. Do not backfill in layers with native soil. If your backfill does not meet the specified requirements, alternate materials may not be used without written approval from Envirotank/Maskell. Backfill shall be Gravel, Crushed Stone, Crushed gravel with size grading as follows: Gravel A clean naturally rounded aggregate of nominal size range 19.0 to 4.75mm. Crushed Stone or Crushed Gravel Washed, crushed stone, or gravel of nominal size range 13.2 to 4.75mm. In Australia All aggregates shall conform to AS :1986. Specifically section , severe conditions (Table 4) and in moderate conditions. (Table 5&6) Except that dry rodded density will not be less than 1500 kg/cu.m. In NZ All aggregates will meet sections 4&5 of NZS3121:1986 and shall have a crushing resistance of 100kN, when tested according to NZS3111:1986 Section 14, with a density of not less than 1500kg/cu.m when tested to NZS3111:1986 Section 10. Alternative Backfill Material For alternative backfill material please contact Envirotank for information regarding type, compacting methods and inspection procedures. The backfill should not have more than 3% passing a No. 8 sieve (2.36mm) Note: You should require your backfill supplier to certify that the backfill meets this specification.

2 Env Fibrglass 8pp book 8/21/01 10:04 AM Page 2 3) Visual Air/Soap Testing All tanks must be soap tested on site prior to installation. We recommend using a pressure relief valve during all testing. A) Single Wall Tanks These tests must be performed before installing tanks: Ensure all fittings are sealed. Pressurize tanks. To 35 kpa (5psi) maximum Use a pressure relief valve for additional protection. For compartmented tanks pressurise each compartment. Soap the tank and carefully inspect for leaks as indicated by the bubbles. Maintain test pressure and continue inspection for at least 30 minutes. DO Use a maximum 100 kpa air gauge with 25 or 30 kpa increments. Make sure you understand these instructions. If in doubt, call Envirotank. DO NOT Approach endcaps or manways while tanks are under pressure. This could result in personal injury. Lift or hoist a tank under pressure. This could result in personal injury. Use a vacuum gauge B) Double Wall Tanks CAUTION: DO NOT ATTACH AIR PRESSURE LINE DIRECTLY TO ANY ANNULAR SPACE FITTING. For all dry interstitial Tests: DO Remove the vacuum gauge, if present. Install air gauge at the fitting where the air pressure hose is connected to the tank. Install a second gauge at the monitoring fitting. Use an air gauge with 5 or 10 kpa increments. Use a pressure relief valve. DO NOT Lift or hoist a tank under pressure (to avoid potential injury). Outer Wall Test Step No. 1 Close manifold valve between primary tank and annular space. Pressurize tank to 35 kpa maximum. Do not connect the air supply directly to the interstitial space or tank damage will result. Step No. 2 Close the air supply valve to the primary tank. Disconnect the air supply. Step No. 3. Open the manifold valve in order to pressurize the tank annular space. NB Pressure may drop slightly. Step No. 4. Monitor the pressure readings for at least 30 minutes. At the same time, cover tank outer surface with soap solution. Carefully inspect for leaks as indicated by bubbles, especially around fittings. NB For compartmented tanks pressurise each compartment Soap the fittings and inspect for leaks as indicated by air bubbles Inner Wall Test Step No. 5. Close manifold valve to annular space. Open air supply valve to vent primary tank. Maintain 35 kpa pressure on the annular space. Step No. 6. Monitor air gauge on tank for another 30 minutes, but not more than 60 minutes. After successfully completing air test: Release pressure. Disconnect and remove air manifold fittings, hose and valve. C. Double-Wall Hydrogard Tanks This tank includes a hydrostatic monitoring system. This system includes a non toxic coloured monitoring fluid between the tank walls. The coloured monitoring fluid may be tap water or a brine solution (30% calcium chloride), depending on your geographical area. In the unlikely event of a tank leak, this monitoring tracer fluid will leave a coloured trace on the tank. THE HYDROGUARD RESERVOIR MUST REMAIN VENTED AT ALL TIMES. DURING TESTING, INSTALLATION AND FOR THE FULL SERVICE LIFE OF THE TANK. Reservoir Level Check Remove the 4 plug from the reservoir fitting and inspect for monitoring tracer fluid. If the reservoir is empty, call the Envirotank Office. Outer Wall Test Step No. 1. Inspect the tank outer wall closely for the presence of any coloured monitoring tracer fluid. If a coloured fluid is present, contact the Envirotank Office immediately. Step No. 2. Before inspecting the tank bottom, tighten all fittings plugs to the annular space and reservoir to avoid spilling the monitoring tracer fluid. Remove the bumper pads, inspect tank bottom by lifting tank. Do not rotate tank. WARNING: DO NOT STAND UNDER TANK Step No. 3. Connect an air compressor to a primary tank fitting. Pressurize the primary tank to 35 kpa maximum. We recommend using a pressure relief valve. Do not lift tank with pressure on it. Step No. 4. Apply a soapy water solution to all fittings and manways. Check for leaks as indicated by bubbles. If bubbles are present at the fitting plugs or manway cover, tighten the plugs or bolts and retest.

3 Env Fibrglass 8pp book 8/21/01 10:04 AM Page 3 Inner Wall Test Step 5 Release pressure from the primary tank. Remove a primary tank fitting (not all tanks have shell fittings) plug on each end of the tank. Look inside for any accumulation of monitoring tracer fluid at the bottom of the tank. If coloured monitoring tracer fluid is found call Envirotank immediately. N.B. For compartmented tanks repeat the steps No. 3-5 for each compartment. 4) Hole Size Stable Walls In stable soil conditions for 1.2 m to 3.0 m diameter tanks (2, ,000 litres), the hole must be large enough to allow a minimum of 450 mm (600 mm preferred) between the adjacent tanks and 450 mm (600 mm preferred between the tank sides and ends and the banks of the hole. Single and Double Wall Bulkheads Single wall and double wall bulkheads, are to be tested, as per the testing procedures detailed in Section 3 Visual Air/Soap testing. The interstitial space of the bulkhead is connected to the tank s interstitial space and will be tested in conjunction with the rest of the tank. Filter Fabric It is the responsibility of the tank owner or his technical representative to determine if filter fabric is appropriate for a specific tank installation. Our experience indicates that if all the other installation instructions are carefully followed, the use of filter fabric may not be required. Filter fabric prevents the migration of gravel with native soil; it helps to maintain the integrity and stability of the backfill material. Envirotank /Maskell requires the use of filter fabric for the following types of installations: 1. Tidal conditions or areas subjected to frequently changing ground water levels. 2. Unstable soils (muck or landfills) as defined above. 3. Water conditions with silty soil Unstable Walls (all size tanks) In muck, bog, peat, swamp or landfill type areas where the soil is soft or in areas with expansive clay soils, a larger hole is required to support tanks. In these types of conditions the holes must be large from an unconfined compression test; or soils with an ultimate bearing capacity of less than 170 kpa (3500 lbs./sq.ft.) Unstable soils or areas with expansive clay may require a reinforced concrete slab under tank for support. For unstable soils with less than 12 kpa (250 lbs./sq.ft.) cohesion or with an ultimate bearing capacity of less than 24 kpa (500 lbs./sq.ft.), a filter fabric hole liner is recommended to prevent backfill migration. NEW ZEALAND AUSTRALIA Supplier Fletcher CSP Geofabrics Australasia Product TYPAR 3407 or 3337 BIDIM A14 or 24 Phone (09) (03) Supplier Ground Engineering Ltd. Nylex Product Terram 1000 Terram 1000 Phone (09) (03) Polyethylene is not considered an effective material to prevent migration of pea gravel and native soil; it tears and will degrade in a wet hole environment. Installation Procedure: Line the excavation sides and bottom with filter fabric. Overlap adjoining fabric panels at least 300 mm. Place some backfill on top of the filter fabric in and around the excavation perimeter to hold the fabric in place. In wet hole installations, backfill ballast is necessary to sink and hold the filter fabric to the bottom of the excavation.

4 Env Fibrglass 8pp book 8/21/01 10:04 AM Page 4 5) Burial Depth and Cover A) Dry Holes i.e. normal nonflooded conditions where water will not flood the pit. The tank hole must be deep enough to allow a minimum of 300 mm required backfill bed between the hole bottom or concrete slab and the tanks. To allow for the gravel over top of the tank. PAD DIMENSIONS Paving must extend at least 300 mm beyond tank outline in all directions. MAXIMUM BURIAL DEPTH (all size tanks) To comply with UL requirements, depth of cover for tanks in both traffic conditions must not exceed 2 m over tank top. For burial depths greater than 2 m contact the Fibreglass Tank Installation Manager. MINIMUM BURIAL DEPTH No Traffic Loads (all size tanks) Tanks not subjected to traffic loads need a minimum cover of 600 mm backfill, or 300 mm plus 100 mm reinforced concrete (see chart below). Traffic Loads ( metre diameter tanks) Tanks subjected to traffic loads must have a cover depth of 900mm backfill or 450mm minimum backfill plus 150 mm of reinforced concrete. The reinforcements in the concrete pad must be properly sized for the job conditions to assure concrete surface pad integrity. IT IS ESSENTIAL NO TRAFFIC LOADS ARE TRANSMITTED TO THE TANK BY THE TURBINE ENCLOSURE, OR PIPING B) Wet Holes (hole subject to possible flooding after installation) It is the responsibility of the tank owner or his technical representative to establish the need and requirements for anchoring to suit his specific site conditions. In many cases anchoring is not necessary because of the improbability of flooding to ground level of the hole because of the soil permeability (sand etc.), surface slope, or full surface slope, or full surface sealing and drainage. We recommend owners evaluate the risk involved for each specific site. If it is decided that anchoring is required there are three common alternatives: 1) Concrete Slab Anchoring pouring a full 200 mm concrete slab under the tank on the base of the excavation and tying the tanks down to it. If this approach is used the controlling minimum depth may change to that necessary to resist the effect of the surface vehicle loading. N.B. Such a slab must be covered with a minimum aggregate bedding of 300 mm. 2) Deadmen anchoring the tanks are strapped down to concrete anchors on either side of a tank that add to the hold down load by their own weight and by the weight of backfill above them. 3) No anchoring Burying the tanks deep enough so that the weight of the backfield material is sufficient to overcome any bouyancy. This may require only about 10% increase in overall depth of the hole from the depth required for a tank with anchors. We offer the following minium burial depth chart as a guide only for a fully flooded multiple tank installation. Because of the many unique site and tank variables, each owner should verify the particular circumstances while evaluating the need for anchoring and recognise our information is accurate only for the assumptions we make. The important criterior for burial depth are the selection of backfill weight, max. expected flood water level, single or multiple tank installation, the use and numbers of turbine enclosures per tank, and the safety factor and/or risk evaluation acceptable Installation Burial Depths - Tank Top to Grade Level Dry Installation (protection from surface loading) Tank Diameter-mm Traffic 150mm Slab (H2O) Loading No Slab No Traffic 100mm Slab No Slab Wet Installation (protection from flotation, flooded to ground level) Tank Diameter-mm Concrete slab anchor Deadman anchors No anchoring (overburden only) Depth Variations to above for: Each Riser per Tank With Anchors Without Anchors No Traffic Slab or Asphalt Anchor Top Flush with Tank Bottom

5 Env Fibrglass 8pp book 8/21/01 10:04 AM Page 5 6) Anchoring 1) Anchors For tank burial where the need for anchoring has been evaluated and found advisable three options are available: 1) The tank can be buried deep enough to retain it, 2) A full concrete slab can be laid under the tank and its bedding backfill and the tank strapped to the slab or 3) deadman anchors can be used alongside each tank and the tank strapped to the anchors. The most common method is the use of deadman anchors detailed below. Please contact ENVIROTANK for further information if the use of a full concrete slab is being considered. Deadman Anchors The weight of overburden on top of the deadman and tank provides the anchoring force. Lay deadman along each side and parallel to tank. The tank must not overshadow the deadman anchor. Deadman are made with 2 x H12 Bars with R6 300 centres A 32ø Rod, Grade 300 steel, is encased with a thin walled electrogalv tube when exposed. Tank Minimum Diameter Height Width* m 300 mm x 300 mm 3.0 m 300 mm x 450 mm *A round cross section can be substituted if the diameter equals or exceed the deadman width. When using deadman anchors in multiple tank installations, each tank will require two deadmen. If one deadman is used for adjacent tanks it must be doubled in width. A separate anchor point must be provided for each strap. Anchor points are incorporated with their legs anchored to the middle of the rebar reinforcement. Spacing for anchor points is determined by the number and location of anchor points shown on tank drawings. Triple clamp the wire rope. 2) Hold Down Straps 2) Hold Down Strapping Use the hold-down straps on top of all designated ribs ( ) Anchor point centres should be spaced equal to tank diameter plus 300 mm regardless of tank diameter. Anchor points at bottom of hole must be aligned with designated ( ) ribs + 25 mm. All anchor straps must be uniformly tightened. Straps should be snug but cause no tank deflection. Deflection can be detected by checking tank diameter with a gauge stick before and after snugging straps. There are two common types of straps available for anchoring tanks. A) The Envirotank Safety Hold Down Strapping (ESHS) System complete with the tensioning device and clamp is the standard now supplied unless requested otherwise. This strapping uses high strength polyester webbing without any turnbuckles, shackles etc. This ESHS System minimises and can eliminate time in the hole and is generally quicker and simpler to use. B) The rigid fibreglass strapping complete with thimbles for shackles, turnbuckles and wire rope etc. These straps will be available for customers that wish to continue with them. A) ESHS A single length of flexible polyester webbing is used to secure the Deadmen anchor on both sides of the tank. It is tightened and clamped on top of the tank eliminating the need to be in the hole. The clamp is a small self contained galvanised clamp able to lock the safety strap and rotate it until the desired tension is achieved. ESHS Installation 1) Feed one end of the webbing through the anchor bar, over the top of the tank, through the anchor bar on the other side and back to the top of the tank to be clamped there to the other end of the webbing by the clamping device. Ensure the clamp is central on top of a designated rib and guide the webbing onto the rib as well. 2) Feed the two loose ends of the webbing through the clamping bars and rotate the bars in the sheet metal guide provided. One or two full turns to tighten using Envirotank spanners or equivalent to get maximum tension. 3) While holding full tension assemble the side plates onto the the clamping bars and bolt in place with the bolt and spacer provided. More detailed instructions complete with pictures are available from the Company. B) Fibreglass Straps If fibreglass straps are going to be used with turnbuckles, shackles and/or clamped wire rope the following sizes are recommended. It is recommended that only certified rigging equipment is used and that it is protected from corrosion be Denso tape or equivalent. Size of rigging fittings per anchor location. All Anchoring Methods Minimum per anchor location Tank Diameter Drop-forged Turnbuckle Diameter 20mm 32mm Hook Type 20mm 32mm Jaw Type 12mm 20mm Eye Type 12mm 20mm Wire Rope Diameter 6x19 10mm 12mm (improved plow steel) If use wire rope, it must be triple clamped. 7) Installation Procedure - Dry Hole Bed Provide a minimum of 300 mm level approved backfill bed (see Section 1) over the hole bottom or concrete slab. Set tanks on bed. DO NOT PLACE TANKS DIRECTLY ON CONCRETE SLAB, TIMBERS, BEAMS OR CRADLES. DO NOT MIX APPROVED GRAVEL WITH SAND OR NATIVE SOIL. Always use approved gravel. Do not backfill in layers using sand or native soil. Regardless of the hole size, all excavated (or loose) native soil must be replaced with approved backfill material.

6 Env Fibrglass 8pp book 8/21/01 10:04 AM Page 6 Backfilling ( metre diameter tanks) Note: TANKS INSTALLED WITH BACKFILL TO TOP OF TANK, BUT WITHOUT BACKFILL TO GRADE SHOULD BE COMPLETELY FILLED WITH WATER OR PRODUCT AS BALLAST. * It is critical that this area offer full support under tank and end caps. * It is critical that this area offer full support under tank and end caps. 8) Installation Procedure - Flooded Hole A filter fabric separator may be appropriate to prevent gravel migration. Refer to Section 4 for details. Water level should be maintained at lowest practical level by using pumps with or without a well-point system. Prepare bed as outlined in Section 7. Backfilling Ballast If the water can not be lowered, you will need to ballast tanks. Place tanks in the hole, adding only enough ballast to sink them. Ballast level in tanks must never exceed water level in hole during installation. While adding ballast, use only lifting cable to keep tanks in position. Tanks should be free to roll slightly. Distribute backfill evenly around tanks. Push backfill under tank after each drop using either a long handled probe or an air jet. After backfill is at least 600 mm up the tank sides, additional backfill can be freely added to tank top without using the probe or air jet. An air jet can be constructed by using a 20 mm diameter pipe connected to a minimun 30 litres / sec. (65 cfm) air compressor. A valve on the air jet is essential so the operator can safely control the flow. Use some materials as bedding. Place first 300 mm lift evenly around tanks. From the bank or adjacent tank top, backfill must be pushed completely beneath tank bottom, between ribs and under endcaps to provide necessary support. A long handled probe can be used to penetrate backfill and push it between all ribs and at three points under endcaps. The backfill may be shovelled beneath the tank. Place another 300 mm lift of backfill evenly around tanks. Repeat the probing of backfill from the bank or adjacent tank top. After completion of second lift, backfill can be brought to top of tanks or grade without additional handwork. (Compaction may be required for slab support). This method will not work in tight areas in straight-walled holes. The angle necessary to probe the backfill under the tank cannot be made with the long handles probe. Straight-walled holes in tight areas will require a curved probe to backfill under the tanks. The curved probe is a 1200 mm section of the long handled aluminium probe bent on a radius to match the tank curvature. A leveraging action on the long-hauled probe creates a pushing action under the tank bottom. The following procedure is the most effective for the curved probe: a. After setting the tank on the gravel bed, probe the entire tank bottom and around the endcaps. b. Place the first 300 mm lift of backfill. c. Probe the entire tank bottom and endcaps again. d. Place the second 300 mm lift of backfill. e. Switch to straight probe section and probe tank again. Additional information on alternative out of the hole techniques are available from Envirotank. Ask for Owens-Corning Pub. No 3-PE-13425, Alternate Backfill Procedure. 9) Piping and Sump Clearances Tanks with Sumps When installing a tank equipped with a sump, excavating and bedding must be modified to provide a 300 mm deep x 600 mm diameter hole centred at the sump location. After the tank is placed the void surrounding the sump is to be hand backfilled and hand tamped prior to adding backfill around the tank. External Piping The pump and attached piping must be free to move with the tank. Use a fill box or street box to isolate the piping from the traffic pad. Take precautions during construction to ensure no damage occurs to the exposed piping and fittings. Internal Piping Internal Piping must be a minimum of 100 mm from the tank base (3.5 m diameter tanks require a 150 mm minimum clearance).

7 Env Fibrglass 8pp book 8/21/01 10:04 AM Page 7 10) Filling Tanks Do not fill until backfill is to top of tank. Never add product or water for hold-down in dry hole conditions until backfill is even with the tank top. (Exception - See installation Procedure - 8) Flooded Hole) 14) Mounting Turbine Enclosure (Riser) to Collar 11) Venting All tanks must be vented, as tanks are designed for operation at atmospheric pressure only, except for use with vapour recovery systems provided the pressure or vacuum does not exceed 7 kpa. (1psi). The vent opening should be the same diameter or larger than the piping to remove product. Pressurized deliveries are not recommended. If the delivery vehicle uses pumps to fill the tank, install overfill shut-off equipment in the tank and truck to prevent the tank from being overfilled. OVERFILLING THE TANK UNDER PRESSURE WILL DAMAGE THE TANK, EVEN IF THE TANK VENT IS UNRESTRICTED. 12) Manway and Manway Extensions The standard manway is 600 mm in diameter and has a load bearing capacity of 550 kg. Optional heavy duty manways have a load bearing capacity of 1000 kg. Fibreglass heavy duty manways must be specified on tanks equipped with helical heating coils, agitators or pumps with a total downward load of greater than 550 kg. but less than 1000 kg. 13) Manhole Enclosures The Fibreglass Manway Enclosures provide a non-corroding enclosure for access to piping, pumps and fittings that are secured to the tank manhole cover. The standard enclosure consists of a 1200 containment collar which is sealed to the tank, a 1200 riser which is sealed on site by the contractor to the tank collar and a reducer with lid if required. The reducer and lid are loose fitting items. Fully sealed and waterproof manway enclosures are also available as an option. NB: Installation of the Manhole Enclosures must be carried out in such a way that no load is transferred to the tank from external sources. For additional information on manways and risers, please contact our Engineering Department. Step No. 1 - Sand and Clean Mating Surfaces Wipe the mating surfaces clean. Sand bottom 75 mm of the turbine enclosure interior surface using supplied sandpaper. Sand inside surface of the socket on the secondary containment collar. NB All surfaces must be sanded until they appear white in colour. Step No. 2 - Position Turbine Enclosure on Collar Use a rubber mallet, if necessary, to seal turbine enclosure on collar. Confirm that surfaces inside adhesive channel are dry and clean, before mixing or applying the adhesive. Step No. 3 - Mix and Apply the Adhesive WARNING See Adhesive Applications Guidelines NB Adhesive shelf life is six months. Always Wear Protective Goggles and Gloves When Mixing and Applying Adhesive.The Adhesive Materials are Flammable. Keep Adhesive Materials Away from Sparks and Ignition Sources. Thoroughly mix two-part adhesive in accordance with the detailed mixing instructions contained in the adhesive kit. Apply with supplied gunk bag to fill cavity. Step No. 4 - Curing Allow adhesive to cure 24 hours minimum. NB Mating parts must not be moved before adhesive is fully cured. For outside ambient temperatures below 15C apply supplementary heat to initiate adhesive curing process. Step No 5 - Testing Fill turbine enclosure with water 75 mm above collar and turbine enclosure joint. Visually inspect outside of joint for any signs of leaking.

8 Env Fibrglass 8pp book 8/21/01 10:04 AM Page 8 Adhesive Application Guidelines The adhesive materials and vapours are flammable. To WARNING prevent fire or explosion hazard, if a heat gun (or other ignition source) is used for supplemental heat, first evacuate flammable vapours which may accumulate in the bottom of the turbine enclosure. Use the following guidelines, which are based on outside ambient temperature, to mix and apply adhesive. When required for turbine enclosure adhesive: Recommended method for supplement heat is to transfer warm air to the turbine enclosure while keeping ignition sources away. Heat Sources: Salamander heater. Radiant heater Heat gun (maximum output temperature 90 C). Can be used for turbine enclosure adhesive if outside temperature is at least 8 C. For cold and cool weather (less than 15 C): Preheat the adhesive to 18 C - 24 C. Mix adhesive Add supplemental heat inside the assembled turbine enclosure to raise temperature of collar and enclosure to 15 C minimum, 65 C maximum. Apply adhesive. Continue to apply supplemental heat to adhesive until it hardens (30 minutes minimum). 15) Monitoring Wells Monitoring wells should be set at least 300 mm outside of tank outer diameter. Backfill with same materials as tank backfill. 16) Barricades Tank area must be barricaded to prevent any vehicle travel over the tanks until installation is complete. 17) Installation Checklist Complete the installation checklist (MP 100/89 included in the tank shipping packet. Measure, record and compare the tank vertical diameter reading before backfilling and after backfill is brought up to subgrade to verify the tank backfill support. A copy of the installation checklist must be retained by the tank owner and/or installation and/or installation contractor to validate any future warranty claim. 18) For Additional Information On Other Installation Details Specific procedures for Encasing a Tank in Concrete or Adding Tanks to Existing Installations and alternative installation techniques are available by contacting your Fibreglass Tank Sales Representative or the Fibreglass Tank Installation Manager. Warm weather (between 16 C and 30 C): Adhesive will harden in approximately 30 minutes. No supplemental heat required. Hot weather (above 30 C): Apply adhesive more rapidly (it will harden in 15 minutes). (Alternate) Cool the adhesive to 15 C to slow down chemical reaction. Increase allowable application time. When required for FRP Coupling: Recommended method for supplemental heat is a hand held heat gun (maximum output temperature 90 C). Important: Mix unused tubes of catalyst and any unused adhesive to form a solid for safe disposal. Then dispose as a non-hazardous waste in accordance with local regulations.) Envirotank In Australia NZ Ltd. 24 Bowden Road Mt.Wellington Envirotank Pty Ltd P.O.Box 541 Blackburn 11185, Road Ellerslie, Auckland, P.O. Box 558 New Zealand. Phone Mt. Waverley, (09) Fax Vic. ( , Australia. Phone (03) Fax (03) Freephone TRADEMARK In New Zealand Maskell Productions Ltd 24 Bowden Road Mt. Wellington P.O. Box 11185, Ellerslie, Auckland, New Zealand. Phone (09) Fax (