NAFLIC BULLETINS This document is not complete and is being updated and revised but the information is provided to assist you with find an appropriate Technical Bulletin. NAFLIC accepts no responsibility for the accuracy of the information Number Device Manufacturer Defect Details 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 Matterhorn Reverchon Detached car Wear in the ball and socket 1. Check balls and sockets. If chrome has worn off – replace 2. Provide secondary support system. 3. Cracking is possible in the radial arms. Use NDT 22 Scream Machine Fatigue Failure detected where stub axle fits into radial arm. 23 Juvenile Chair O Plains All Impacts Provide barriers and Paratroopers 24 Explorer Reverchon Cracking Failure of slew ring support structure. 25 Tagada Soriani and Structural failure Wall thickness of booms at risk – 17.5mm (later booms 25mm) Moser NDT required in the region of boom stress raisers. 26 Polyp Soriani and Structural fatigue Fatigue cracking at the inner ends of the main radial arms. Moser Fatigue cracking at the upper end of the gusset plates at the centre bobbin. 27 Bungee Jumping HSE consider this is a sport and not suitable for public entertainment. 28 Miami Trip All Many Passengers tending to slip under restraint bar Insufficient padding Occasional opening of restraint bar Lack of padding to seat sides Check locking mechanism of lap bar Padding to protect neck and upper torso Review operating instructions Appropriate height/age restrictions 31 Electric motors All Many Programmable logic controllers – see HSG81 Barriers and enclosures must be fitted to open face plate starters Live parts inside enclosures to give at least IP2X (BS5496) Top surface of barriers/enclosures shall be IP4X Suitable precautions to prevent people touching live parts unintentionally DC supplies to be ripple free – only from DC generator, battery, 0r a full wave three phase rectifier. 33 Rotors All Problem of trapping riders feet between rotating platform and side walls. Allow ride to low down with the ride in its lowered position. Instruction sheet detailing above to be on display to operator.Any rubber on the sides of the drum at lower leg level to be removed. Feet positions to be marked on the floor, several inches form the edge. Fit interlock to the door so that ride cannot start whilst the door is open. 38 Caterpillar Check for – Seat friction Separation between seat compartments Unguarded tram wheel Finger traps in the hood mechanism Finger traps between adjacent cars in a trough. 39 Trabant Bennett Restraints Check for flexing of the car sides allowing the restraint to open. 40 Mini Roller Coaster Supercar Tow failure Provide secondary link between cars 41 Tivoli Orbitter Cars strike floor Caused by Failure of any part of the circuit to the three capstns not fitted with limit switches. Failure (such as seizure) to any of the other switches to the other three capstans. Failure of the hydraulic circuit controlling rotation in a way that prevents the ride slowing down e.g. spool valve sticking, sticking solenoid valve, additional feed given wrongly to solenoid valve, Failure of the control system and hydraulic system retracting the capstan shafts, failure of the lift control spool valves or failure of either of the proximity sensors on the lift circuit. 42 Inflatables All Lack of anchors 44 Accident books Inspection bodies to inspect accident books 46 Galleon Zamperla Passenger stability Possibility of passengers sliding of the end of the seat Risk of sliding along the seat to where restraint bar does not hold them Ability to trail a leg outside the hull 49 Flying Coaster Langwheels Damping cylinders become detached from mountings or likely to seize Poor locking of passenger restraints Inadequate guarding of drive/gearbox 51 Matterhorn Sobema Failure Risk of clip retaining rear light unit failing – replace with captive nuts. 52 Runaway Mine Train Mack Restraint failure Restraint is not fail safe in the event of power 53 Tilt and Whirl Sellner-man Car detachment Cracking of the flange mounts which carry pins about which the car spins. See detailed report. 56 Twist (Scrambler) Eli Bridge Fatigue cracks The centre pole passes through two parallel base plates and is welded circumpherentially to the under side of the bottom plate. Cracks occur in this weld. Cracks occur in the welds between the centre pole and the vertical webs between the two plates. 58 Ramba Zamba, Trebant, Restraint failure Restraints may be operated from inside the cars. Handles should be made Twist inaccessible. 59 Roller Coaster Pinfari ZL Fatigue cracks Rail joints to be subjected to periodic NDT 60 Non structural All Failure and Lighting frames, theaming etc – risk of collapse onto ride. components collapse 61 Bungee jumping All Speak to the HSE at Preston before getting involved 62 Chair O Plane All Fatigue failure NDT of centre pole every year. 63 Matterhorn Sobema Link Arm Failure The twenty radial arms are connected by short link arms, two of which are adjustable. The threaded section of the adjusters has failed. Ensure operator has manufacturers tensioning technique advice. Ultrasonic NDT on threaded parts. See detailed report. 66 Quasar ARM Fatigue cracks Cracks have been found on the H frame upper pivots, radiating from the hinge pin holes. The region is inaccessible without stripping down. 71 Ski Jump Pollard Bearing failure Careful examination and maintenance of the arm bushes is vital. 75 Balloon Race Zamperla Fatigue cracks Cracks found in the lifting trunnions which attach the upper end of the hydraulic ram rods to the main centre of the ride. The trunions are welded to the collar and remachined. 83 Miami Trip All Car shaft failure 85 Roller Coaster All Walkways Ensure barriers are adequate to prevent any accidental falls 86 Matterhorn Sobema Car frame failure Risk of car frame failure – strip cars. 87 Human Cannonball Concorde Pneumatic problems 88 Supertrooper S E Ward Restraint Bar The restraint bar came open. 89 Roller Coaster All Roll Backs The need for anti rollback device. 90 Turbo Chopper/Sky Dial and deal Pneumatics Dangerous air receivers under the seats. Hawke/Radar and Finland 91 Miami Trip All Padding Padding required to the sides of the seat and to the restraint bar. 92 Looping roller coaster Pinfari Brake failure Failure of the car fin brake. 93 Reverse driving of rides All Design Review A design review is required where this facility is not identified in the manufacturers hand book. 95 Electrical All Restraint checks Check because Detection/Interlocks on Detect only the position of the restraint not whether it is locked seat restraints Detect the position of the restraint but allow too wide a range to safely contain all passengers Do not fail to safety Allow the detection system to be over-ridden. Have no redundant back up Inadequate strength Inadequate inspection/replacement programmes. 96 Formula rides Idees Loisirs Electrical issues Open electrical connection blocks Railings are not fixed in place Bare terminals in electrical cabinets Electrical power input cables not secure. 97 DC Tracked rides All Electrical shock DC supply must be ripple free from DC Generator or a full wave three phase risk rectifier. Neither positive or negative should be connected to earth at any time Fuses should be fitted to each pole of the supply and at all points where they are required to protect supply cables due to changes in cross section. All switches, isolators etc, should be double pole. All exposed isolators, terminals, conductors and fuses should be shrouded. 98 Roundup (Meteorite) Cadaxton Fatigue failure Cracks in the upper ram pins. Strip and subject to NDT. 100 Roller Coasters etc All Fail Safe Braking In some instances brakes rely on air pressure to hold the brake on. Lack of air Systems results in the brake releasing. Brakes should fail to safe. 101 Top Spin Far Fabri Fatigue Failure See report 105 Galleon Ship Zamperla Passenger Three incidents have occurred where children hve placed their feet outside the walls containment of the galleon and have struck fixed features. Annual inspection to check if it is possible to trail a leg or make contact with a fixed feature. Ensure the loading platform retracts Fit entrance gates in the side of the galleon Provide suitable signs. 106 Passenger containment All Passenger Containment systems should protect against containment Falls as result of reasonably foreseeable passenger behaviour Inadvertent opening of restraints 107 Log Flume All Passenger thrown Passengers thrown forward during deceleration in the water trough and sustaining forward injury. Look for footrests, handrails, padding at the front of the log, depth of water etc. 109 Miami trip Emmett Fatigue Failure Need for 6 monthly NDT by MPI of car shafts. 111 Barriers All Falls Barriers should normally be 1m high. If the fall height exceeds 2m they should be 1.1m high. 112 Ferris Wheel All Restraint bar Passenger access to the restraint bar mechanism should be impossible 114 Liberty wheels All Restraint Bar Passenger access to the restraint bar mechanism should be impossible 115 Round up, Paratrooper Hrubetz See report and Fireball 120 Matterhorn Reverchon Wear Failure Cracks in the stainless steel plates in cars due to wear. 121 Matterhorn SDC Wear/Fatigue Failure of joints inside the car. Failure 127 Super Loop on Top Soriani and Fatigue Cracking Cracking in the main universal coupling pin, hing pin in the articulated hinge Moser 128 Liberty/Gondola wheels Speak to the HSE 133 Miami Trip Fairmat, Ewofab, Restraint bars Modifications needed to the locking system for the restraint bar Nottingham UK 134 Twist Sonacose Restraint bar Corrosion to the spring. failure 137 Stealth Series Flight Avionics Contact manufacturers Simulators Ltd 138 Miami Trip All Restraint bar Risk of fatigue in the restraint bar Lamb Chops fatigue failure 139 Roller Coaster Wheels All Wheel failure Wheel strength may be substantially reduced by heat treatment when fitting new steel tyres.