INSTALLATION GUIDE REV. AD 04/28/09 The New ...

1 INSTALLATION GUIDE REV. AD 04/28/09 SizePreload Min AverageMaxM36 (H8)458 kNN1200027003300 Nm103 kips140019002400 ft-lbM36 EURO510 kNN2220030003600 Nm114 kips160022002700 (H10)572 kNN3250033004100 Nm129 kips180024003000 kNN4350045006000 Nm160 kips260033004400 kNN4500065009000Nm209 kips370048006600 ft-lbTable 1 Torque* Nm*The middle value is sometimes thought to becorrect, but individual bolts may vary widelySquirter DTIs for Flange Splice BoltsIn Wind Turbine TowersNote 1:Minimum preload as given in EN14399-9 for M36 designation H8 Note 2.

2 From DIN 18800-7, approximately equal to 70% nominal yield strength of M36 Property Class Note 3:Minimum preload as given in EN14399-9 for M36 designation H10 Note 4:DAST Richtlinie 021If the bolt Preloads in Table 1are what your design calls for:And if you have been using a TorqueValue to try to get the right Preload:Table 2 SizeMin TargetMaxM36 (H8)458507552 kN103114124 kipsM36 (H10) kN209230245kipsApplied Bolting has 5 Squirter DTIs that can get you the followingPreloads with a Performance ClarificationsSquirter DTIs shown on this sheet are specifically designed and approved for useon the nut end of bolts under hardened flat washers as shown in Figure calibrated and installed as directed, they will produce a bolt preload withinthe range shown in Table 2, with a confidence specifications anticipated for use with these Squirter DTIs are EN 14399HV EN14399HR 898-1 DAST Richlinie 021.

3 Other bolt specifications with similar strength may also produce similar New DTIsfor Flange Splice Bolts In Wind Turbine Towers73638 Certified by:Proper Calibration of Squirter DTIsloose12134snugtighttighterBefore starting INSTALLATION , Squirter DTIs MUST be calibrated by the followingprocedure in a Bolt Tension Calibrator to determine how much squirted silicone iscorrect:a)Insert a bolt in Calibrator, place Squirter DTI with the DTI on the nut end sepa-rated by a flat washer. See Figure 1b) Tighten the assembly to the Target load as shown in Table 2, with any wrench,just as the bolt would be tightened in the tower )Once tightened, note the appearance, flow volume, and number of squirts ema-nating from under the DTI at that tension.

4 The squirt should look similar to photo#3 . The number of squirts should be AT LEAST equal to the number of bumps onthe DTI less one: for instance, a 10 bump DTI should squirt in at least 9 places. d)Repeat this test fivetimes and get a visual impression of how much squirt is necessary. e)Then cover the dial of the Calibrator. Using new Squirter DTIs, see how close tothe target tension you can get by judging when to stop by the squirt appearance Step bolt assembly in a Bolt Tension Calibrator. and tighten in star pattern sequentially. See Figure all squirted DTIs look the same as the ones tightened in the Bolt Tension Calibrator at the correct For InstallersSquirter DTI Assembly in Bolt Tension Calibratorand as installed in Wind Tower FlangeFirst pass snug only2nd pass small squirt3rd pass full squirtInstall by tightening sequentiallyin a star 21 Make sure the corrosion protection coating on the bolt, nut, flat washer and Squirter DTI are sure the hole size is no more then 3mm larger then the bolt 3 Make sure the flange surface under the Squirter DTI is clean, flat.

5 And within 4 degrees of perpendicularto the washers under the nuts used to compress Squirter DTI bumps must be from the list of three specific-tions: EN 14399-5, EN 14399-6 (with ID Chamfer facing nut) and/or ASTM DTIs are intended to be fitted on the nut end of the DTI can be installed under bolthead- for more information please call Applied sure the flanges are brought into firm contact before final Bolting technical representatives should be present at site to instruct any crew new to usingSquirter DTIs. Please call ahead for 800 552 19991 802 460 3100 : metric holes( +3mm max)M36, M42, M48 boltNutHardened flat washerBeforeTighteningAfterTighteningFig ure 1 ASTM F 436M orEN 14399-5,-6(EN 14399-6 flat washermust have ID chamferfacing nut)M36, M42, M48 Squirter DTI