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Summary of Contents for Viking VFT
- Page 1 Bladder Tank Model VFT & FT Installation, Operation And Maintenance Manual (Foam Concentrate Inside The Bladder) March 14, 2016 F_032216 16.1 | TM1.3.1.1/14032016/en...
- Page 3 Viking is not responsible for the damage and any other consequence caused by a lack of skill of the personnel involved with the with bladder tank’s operation.
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Page 4: Table Of Contents
The Viking Corporation, 210 N Industrial Park Drive, Hastings MI 49058 Telephone: 269-945-9501 Technical Services: 877-384-5464 Fax: 269-818-1680 Email: techsvcs@vikingcorp.com VISIT THE VIKING WEBSITE FOR THE LATEST EDITION OF THIS TECHNICAL MANUAL GENERAL INDEX SECTION 1 – SAFETY PRECAUTIONS..............................5 1.1 Safety and warning notices................................5... -
Page 5: Section 1 - Safety Precautions
1.2 General notes for operator safety CAUTION The bladder tanks manufactured by Viking are designed to work under pressure and to handle re ghting foam concentrates. Both these two conditions represent a potential risk for people and property. For the appropriate operation when the tank is under pressure, please refer to the instructions that follow in this manual. For safe foam concentrate handling and rst aid measures, please refer to the applicable parts of the concentrate’s MSDS. -
Page 6: Section 2 - Scope Of The Manual
As the bladder tanks manufactured by Viking have been designed, tested and approved by third party organizations including the durability and performance of the original accessories installed - only original spare parts and consumables must be used when replacements are required. -
Page 7: Section 3 - Equipment Description
3.2 Bladder tank design data As a pressure vessel, the bladder tank supplied by Viking can be manufactured according to different design codes - see previous section - as indicated in the identi cation nameplate placed on the tank’s shell. - Page 8 (lifting lugs veri cation) stress on the supporting legs The design of the bladder tank supplied by Viking does not normally take in consideration, if not otherwise requested on the Purchaser Order: unstable uid decomposition (not expected with water and foam concentrate)
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Page 9: Bladder Layout
The Viking Corporation, 210 N Industrial Park Drive, Hastings MI 49058 Telephone: 269-945-9501 Technical Services: 877-384-5464 Fax: 269-818-1680 Email: techsvcs@vikingcorp.com VISIT THE VIKING WEBSITE FOR THE LATEST EDITION OF THIS TECHNICAL MANUAL 3.3 Bladder tank layout The layout and the position of the accessories of the bladder tank are shown in gure 3.3.1. -
Page 10: The Safety Thermal Relief Valve
For this reason a safety valve, called the thermal relief valve, is installed on all Viking bladder tanks (see item no. 3 in gure 3.3.1.). This valve is not intended to protect the tank from an overpressure generated by the re ghting network system, as the latter depends on the pump(s) owrate, total pump(s) head and on the static (geodetic) pressure arising from the bladder tank elevation. -
Page 11: Section 4 - Material Transportation, Reception And Storage
Any other damage that, based on the judgment of the installer/end user, is supposed to potentially result in a failure or that may affect the performance of the bladder tank must be promptly highlighted to Viking and recti ed before the start-up according to the manufacturer’s indications. -
Page 12: Section 5 - Before The Installation
Please contact Viking for details on the anti-freeze compounds compatible with the bladder material and to be instructed on the appropriate mixing ratio. -
Page 13: Section 6 - Installation Requirements
6.1 General Guidance WARNING The installer and the user of the equipment supplied by Viking have the responsibility to ensure that the following points are ful lled: The installation must be carried out by quali ed and authorized personnel according to the applicable local regulations and laws. -
Page 14: System (Primary) Relief Valve
If the drain port is piped, care must be taken that the safety device capacity is not lowered. Pressure indicators in addition to those provided by Viking (that are factory installed on the bladder tank), must be placed throughout the system to adequately monitor the pressure value. -
Page 15: Section 7 - Bladder Tank First Filling
It is highly recommended that the installer/user contacts Viking in case of doubts on the instructions shown in this manual. Viking is not responsible for any damage to the bladder if the lling operation is not made by Viking. -
Page 16: Before The Rst Lling
The bladder tank lling relies on a procedure which requires the use of some SPECIAL TOOLS. The following devices MUST BE procured by the installer/user before the lling operation: the lling device ( gure 3.3.1, supplied as an optional by Viking) or an equivalent assembly with a 0-6 kPa range pressure gauge;... -
Page 17: Bladder Tank Rst Lling
7.3 Bladder tank rst lling The status of the Viking bladder tank’s relevant valves before the rst lling, making reference to gure 3.3.1, must be as described table 7.3.1. Valve 5 and Gauge 6 are part of the temporary lling device previously described. - Page 18 (see gure 7.3.3). (Pressure in excess of 0.6 bar applied to the level indicator may damage it). Keep valves (11) and (12) closed and open the valves (2) and (7). Some water drainage from valve (7) is normal as all Viking bladder tanks are hydrotested during the manufacturing process.
- Page 19 Telephone: 269-945-9501 Technical Services: 877-384-5464 Fax: 269-818-1680 Email: techsvcs@vikingcorp.com VISIT THE VIKING WEBSITE FOR THE LATEST EDITION OF THIS TECHNICAL MANUAL Water shall be added outside the bladder in order to prepare it for foam lling. To do that, connect a water hose (for example from a hydrant or hose connection) to the water drain valve (7).
- Page 20 Viking bladder tanks have a real capacity higher than the nominal to allow for foam concentrate thermal expansion under the worst expected temperature conditions within the design limits. As a consequence, water is normally vented through valve (2) in case of lling to nominal capacity or less while the foam amount is not enough to be make it discharged through (5).
- Page 21 The Viking Corporation, 210 N Industrial Park Drive, Hastings MI 49058 Telephone: 269-945-9501 Technical Services: 877-384-5464 Fax: 269-818-1680 Email: techsvcs@vikingcorp.com VISIT THE VIKING WEBSITE FOR THE LATEST EDITION OF THIS TECHNICAL MANUAL 13a. (Alternative): foam lling up to the total capacity...
- Page 22 Telephone: 269-945-9501 Technical Services: 877-384-5464 Fax: 269-818-1680 Email: techsvcs@vikingcorp.com VISIT THE VIKING WEBSITE FOR THE LATEST EDITION OF THIS TECHNICAL MANUAL 14. Once partial lling or lling to nominal capacity is complete, a water supply hose should be connected to the water ll/drain valve (7).
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Page 23: Level Indicator Setup
7.4 Level indicator setup (where tted) Since the Viking bladder tanks, due to tolerances, have a capacity that differs slightly among tanks of the same size, the level indicator showing the max capacity must be adjusted in the eld after a full foam loading. -
Page 24: Section 8 - Bladder Tank Commissioning And Start-Up
The Viking Corporation, 210 N Industrial Park Drive, Hastings MI 49058 Telephone: 269-945-9501 Technical Services: 877-384-5464 Fax: 269-818-1680 Email: techsvcs@vikingcorp.com VISIT THE VIKING WEBSITE FOR THE LATEST EDITION OF THIS TECHNICAL MANUAL SECTION 8 – BLADDER TANK COMMISSIONING AND START-UP Once the bladder tank is lled with foam it can be put in service for re protection purposes. -
Page 25: Section 9 - Foam Concentrate Level Measurement
Isolation of the bladder tank from the system and shell water drown down is always required. The Viking bladder tanks are equipped with a foam concentrate level indicator (hydrometer) at its bottom (10) in gure 3.3.1). From the level measurement the foam volume of the tank can be easily calculated. - Page 26 The Viking Corporation, 210 N Industrial Park Drive, Hastings MI 49058 Telephone: 269-945-9501 Technical Services: 877-384-5464 Fax: 269-818-1680 Email: techsvcs@vikingcorp.com VISIT THE VIKING WEBSITE FOR THE LATEST EDITION OF THIS TECHNICAL MANUAL Figure 9.1.1: example of bladder tank lled by foam up to partial capacity At the end of the operation, restore all the bladder tank valves to their original con guration.
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Page 27: Section 10 - Periodic Maintenance
The maintenance recommendations given in this manual are relevant to the Viking bladder tank and accessories only. Inspection and maintenance of the entire foam system, where materials supplied by Viking are included, are not within the scope of this manual or the following recommendations. It is recommended that the instructions given in applicable standards or regulations are adhered to (e.g. -
Page 28: Maintenance Schedule
Telephone: 269-945-9501 Technical Services: 877-384-5464 Fax: 269-818-1680 Email: techsvcs@vikingcorp.com VISIT THE VIKING WEBSITE FOR THE LATEST EDITION OF THIS TECHNICAL MANUAL 10.3 Maintenance schedule Viking recommend, as a minimum, to implement a maintenance program as indicated in the table below: Table 10.3.1: Recommended maintenance schedule No. Activity... -
Page 29: Bladder Connections - Bolts Tightening Torque Adjustment
10.4 Bladder connections - bolts tightening torque adjustment The separation bladders used in Viking bladder tanks are made by synthetic materials whose consistency is similar to that of the rubber. In particular, the top and bottom caps are made of synthetic rubber. These two caps provide the xing of the bladder to the rest of the tank. -
Page 30: Check Of Bladder Integrity
The Viking Corporation, 210 N Industrial Park Drive, Hastings MI 49058 Telephone: 269-945-9501 Technical Services: 877-384-5464 Fax: 269-818-1680 Email: techsvcs@vikingcorp.com VISIT THE VIKING WEBSITE FOR THE LATEST EDITION OF THIS TECHNICAL MANUAL 10.5 Check of bladder integrity During the normal operation, if the instructions given in this manual are correctly followed, the bladder is always subject to a virtually null net pressure as the pressure in the internal area equals that in the external region. -
Page 31: Bladder Replacement
24 hours. Replacement bladders should be original manufactured by Viking to t properly the tank’s shape and to secure the design performance of the equipment. Viking is not responsible for the overall performance of the supplied bladder tank if non original spare parts are installed. - Page 32 Telephone: 269-945-9501 Technical Services: 877-384-5464 Fax: 269-818-1680 Email: techsvcs@vikingcorp.com VISIT THE VIKING WEBSITE FOR THE LATEST EDITION OF THIS TECHNICAL MANUAL The bladder replacement operation is split into two parts: removal of the existing bladder and installation of a new one.
- Page 33 The Viking Corporation, 210 N Industrial Park Drive, Hastings MI 49058 Telephone: 269-945-9501 Technical Services: 877-384-5464 Fax: 269-818-1680 Email: techsvcs@vikingcorp.com VISIT THE VIKING WEBSITE FOR THE LATEST EDITION OF THIS TECHNICAL MANUAL BLADDER INSTALLATION - VERTICAL TANK ONLY Replacement bladders are normally supplied with drilled caps to t the xing anges. In case they are not, drill the top and bottom caps according to the ange holes.
- Page 34 The Viking Corporation, 210 N Industrial Park Drive, Hastings MI 49058 Telephone: 269-945-9501 Technical Services: 877-384-5464 Fax: 269-818-1680 Email: techsvcs@vikingcorp.com VISIT THE VIKING WEBSITE FOR THE LATEST EDITION OF THIS TECHNICAL MANUAL BLADDER INSTALLATION - HORIZONTAL TANK ONLY Replacement bladders are normally supplied with drilled caps to t the xing anges. In case they are not, drill the top and bottom caps according to the anges holes.
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Page 35: Extraordinary Maintenance
The ordinary maintenance operations described in Section 10 are normally enough to ensure an appropriate service regime during the Viking bladder tank lifetime. In case of special intervention on the tanks, due for instance to environmental conditions or wrong handling/operation of the bladder tank, always contact Viking.
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