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12

Cylinder Inspection

The cylinder should be inspected for:

• 

Dented or swollen tube jacket

• 

Visible cracks in any welds and fluid leakage from the welds

• 

Piston rod surface damage, bending or fluid leakage in seal area

• 

If fully collapsed or over design impact speed, disconnect piston rod from the mobile sheave after the unit is pulled out 
and push the piston rod in checking for free movement.

If any of these inspections are suspect, replace cylinder and have it examined by the manufacturer. Current models have PTFE 
seals with an unlimited static life. 

Anchor Bolt Inspection

Anchor bolts may come loose or be damaged upon impact. These bolts may be replaced by welding a nut or putting a double 
nut on them and backing them out of the hole. Drill out the old epoxy and reinstall new bolts with new epoxy following previous 
instructions on page 7. 

Side Panel Inspection

Side Panels are designed to nest and collapse with minimal or no damage upon frontal impact. The side keepers sustain a shock 
upon impact. These side keepers should be replaced if there are any signs of fatigue, bending or other visible damage. Inspect 
the side panels for any bending or torn metal. If damage is found, any side panel is removable by removing four bolts. It may be 
necessary to remove the bolts on the panel upstream to slide out a panel located in the middle of the unit. The side keepers used 
to hold the large front sled panels are different than the side keepers on the center panels. Also, the side keeper used on the last 
terminal brace, which is the rearmost support, has a shorter shoulder (¼ inch vs. ½ inch), as it does not have a panel overlap. 
These shoulders must seat into the outer overlapping panel and pin the inside panel to the frames using a torque value of 270 
N-m (200 ft-lbs). Be careful not to pin the edge of the outside panel as it will restrict free sliding of that panel. 

Side Guide Inspection

At the bottom of each support frame, there are two guides to stabilize and guide collapse of the attenuator. Inspect each side 
guide for damage. These guide assemblies are very rugged. If the side guides are not damaged they can be reused. The torque 
value for the side guides is 920 N-m (680 ft-lb). These side guides are stronger than the rail, so visually inspect the rail for 
crowns. Any crowning of the rail can be straightened. 

Содержание SMART CUSHION INNOVATIONS SCI100GM

Страница 1: ...porate Office 2500 Production Drive St Charles Il 60174 Telephone 800 327 4417 workareaprotection com SMART CUSHION INNOVATIONS N C H R P 3 5 0 A p p r o v e d W O R K A R E A P R O T E C T I O N SCI7...

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Страница 3: ...ist Appendix B Site Preparation 6 Foundations 6 Placement of Crash Cushion 7 Anchor Installation 7 Delineator Panel Attachment 8 Transition Installation 8 Final Inspection 9 RESETTING CRASH CUSHION AF...

Страница 4: ...Block 30 Inch 762 mm Flared K Concrete Block 36 Inch 915 mm Flared L Thrie Beam Bidirectional Traffic Design M W Beam Bidirectional Traffic Design N Jersey F Shape 30 38 Inch 762 965 mm Variable Widt...

Страница 5: ...ature driven changes in viscosity of the fluid in the shock arresting cylinder does not affect performance Maintenance SMART CUSHION impact attenuators are low maintenance units In a two year in servi...

Страница 6: ...570 kg NCHRP 350 Test Level 2 3 DESIGN CRITERIA General SMART CUSHION impact attenuators comply with NCHRP Report 350 TL2 and TL3 and are designed for work zone and perma nent applications Foundations...

Страница 7: ...s no reverse direction traffic Barriers that are wider than 24 inch 610 mm and or have reverse direction traffic require a transition available from Work Area Protection Corp 3 Barrier Height SMART CU...

Страница 8: ...see Figure 2 Unnecessary Locations No reverse direction traffic within the clear zone The barrier does not intrude into the side panels travel zone Figure 2 Unnecessary Locations Examples are traffic...

Страница 9: ...illars and will extend our installation length 71 inches Transition Thrie Beam Rigid Assembly Appendix M Rigid design for possible reverse direction impacts Transition W Beam Rigid Assembly Appendix N...

Страница 10: ...Preparation Check to make sure there are no drains expansion joints or buried conduit cables or utility lines in the footprint space where the attenuator will be placed Remove any curbs 4 inch or obst...

Страница 11: ...ble The crash cushion is shipped in one piece fully assembled Use a choked four point attachment on panel support frames 3 4 behind the sled for the Test Level 3 unit The lift points on the Test Level...

Страница 12: ...htening after 30 minutes at 80 degrees F 27 degrees C See the container label for other tem peratures and bolt up times Allow the epoxy to cure Torque the anchor nuts to 170 N m 125 ft lbs Substitute...

Страница 13: ...is proceed as follows Site Preparation Do not begin work until the area is declared safe and accessible Re Extension and Inspection after Frontal Impact 1 Remove the front delineator panel and attach...

Страница 14: ...e mobile frames and sheaves See the cable inspection procedure 10 Remove the front and rear sheave cover plates at each end of the cylinder by removing the two hex bolts that hold them down 11 Remove...

Страница 15: ...eeper which is bolted to the terminal frame has a inch shoulder 3 Inspect and repair any damaged side guides Cable Inspection Procedure The cable should be visually inspected for damage The most commo...

Страница 16: ...any signs of fatigue bending or other visible damage Inspect the side panels for any bending or torn metal If damage is found any side panel is removable by removing four bolts It may be necessary to...

Страница 17: ...deteriora tion has taken place Non Repairable Impacts There can be instances where the impact is outside the scope of the SMART CUSHION design This may render the SMART CUSHION unsafe to reuse and it...

Страница 18: ...L2 TL3 4 EACH 272593 9422 Keeper Side 1 Side Panels TL2 TL3 8 20 EACH 272595 9423 Keeper Side 2 Rear Panels TL2 TL3 4 EACH 273378 9424 Panel Delineator Painted Yellow TL3 0 1 EACH 273386 9496 Panel De...

Страница 19: ...ACH 275311 9513 Transition W Beam 32 High Right O EACH 275310 9514 Transition W Beam 32 High Left O EACH 275279 9459 Transition Assembly 30 Concrete Straight Connection O EACH 275283 9460 Transition A...

Страница 20: ...l for drop in anchors inch electric drill for rebar bit and bottle brush cordless will work for bottle brush Epoxy dispenser for 28 oz dual cartridge system should have spare in case of malfunction So...

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Страница 46: ...42 APPENDIX FIG P SINGLE SLOPE BARRIER...

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Страница 52: ...48 APPENDIX FIG S 2 SPANNER 06 50...

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Страница 55: ...51 APPENDIX U TRANSITION CONCRETE BLOCK 36 44 INCH 914 1118 mm...

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Страница 60: ...which are in need of repair due to damage from external cause including accident collision improper handling improper transporting failure to properly maintain the System as recommended by SCI PRODUC...

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