Technical specifications PAS68 Telescopic Shallow Retractable Bollard
Statistics
- British Rating : BSI PAS 68
- Vehicle Weight (tonne) : 7.5
- Vehicle Speed (kph) : 64
- Height (mm) : 1000
- Diameter (mm) : 209 and 280
Scope
This specification defines the procurement of an IMPACT RATED – HIGH SECURITY HYDRAULIC BOLLARD – MODEL SHALLOW TT.
The basic system comprising of one or more vertical rising bollards operating independently or in sets as either a single direction, bi-directional or twin lane configuration, a hydraulic power unit, control cabinet containing the controls and logic circuits, traffic indicator column(s) and options as defined herein.
System Configuration
Single bollards individually operated.
Each individual bollard shall be operated independently from any other bollard with in the system. Each bollard shall have its own controls and operate under one of the following configurations:
- Single Direction. Traffic flows in one direction only through the bollard system.
- Bi-Directional. Traffic flows in both directions through the same bollard.
- Twin Lane. Traffic flows in both directions through separate bollards where the entry and exit bollards are segregated by a traffic island.
Multi bollards operating in sets
The bollard system shall have (enter quantity) bollards operating together as a set. Each set of bollards shall have its own controls and operate independently of other systems under one of the following configurations:
- Single Direction. Traffic flows in one direction only through the bollard system.
- Bi-Directional. Traffic flows in both directions through the same bollard.
- Twin Lane. Traffic flows in both directions through separate bollards where the entry and exit bollards are segregated by a traffic island.
Bollard Construction
The bollard shall be a below ground assembly consisting of a cylindrical outer casing complete with cable and drainage duct outlets and an inner bollard of heavy steel cylindrical tube and an aesthetic polymer sleeve capable of being raised above ground into the up position. In the raised position the bollard shall present a formidable obstacle to approaching vehicles. Upon impact, forces shall first be absorbed by the inner bollard and then transmitted to the outer casing and foundation.
Bollard Height
Height of the bollard in the raised position shall be 1000mm as measured from ground level to the top of the inner bollard.
Bollard Dimensions
- Outer Casing: 481mm long x 722mm wide x 900mm deep
- Lower Bollard: 209mm diameter
- Upper Bollard: 280mm diameter
Hydraulic Pack & Circuit
The bollard(s) either working individually or working in multiples shall be hydraulically driven through a hydra pack above ground and within the main control cabinet. The hydraulic pressure shall be adjustable and will pressurize a hydraulic accumulator. The hydraulic circuit shall include all necessary control logic, hydraulic hoses, quick release connectors and valves. Normal operation will allow the bollards to lower in the case of a power fail. In security applications the hydraulic circuit must be flexible enough to allow the bollards to remain in the raised position in power fail. This must be specified at the time of order.
Power Fail
In the event of a failure in the power supply the accumulator shall allow 1,2,3 full cycle operations of a single bollard.
Manual Operation
An optional hand pump can be supplied to allow the bollard(s) to be raised manually in the event of a prolonged power failure maintaining security.
Control & Logic Circuits
Control Circuit
A control circuit shall be provided to interface between the bollard(s), traffic indicator columns and the hydraulic pumps. This circuit shall contain all relays, timers and other devices necessary for all the operations of the system as defined. All control equipment shall be situated above ground and within the main control cabinet
Voltage
The control circuit shall operate from a 380 volt, 50Hz three phase supply. An internal transformer shall reduce this to 24VC for all external devices.
Control Cabinet
The control panel shall be sufficient to house all the control circuits, hydraulic pump(s) and other devices for operation of the system that do not require external visibility (e.g. Radio Receiver) and shall be treated and finished in Black or Stainless Steel with high security locks. The control panel shall have a side access panel for a manual override system and a mains power supply isolator.
The control cabinet dimensions shall be 1300mm high 1500 mm wide x 700mm deep.
Traffic Indicator Column(s)
The traffic indicator column is separate to the control cabinet and is strategically positioned to provide a Red or Green light to vehicle drivers alerting them to the bollard position.
The green light shall indicate when it is safe to proceed. All other bollard positions shall cause the light to show red. External devices required for the operation of the system are housed on the traffic indicator column.
Traffic Indicator Column Dimensions: 168mm diameter with a 45 deg sloping top x 2500mm overall length finished in Black or Stainless Steel.
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Specifying the Correct Number of
Traffic Indicator Columns
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Operating Configuration
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Number of Traffic Indicator Columns Required
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Single Direction
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1
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Bi – Directional
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2
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Twin Lane
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2
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Repeater Traffic Light Columns may be Specified when necessary. Please contact the manufacturer for details.
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Induction Loops
Strategically positioned induction loops will allow the control system to detect a vehicle at all times and audit track the vehicle through the system. The number of induction loops required is dependant on the configuration of the system.
Whilst the lowering of the bollard(s) by timer is permitted the raising of the bollards must not be carried by timer. This needs to be carried out in a safe manner.
Safety
The system shall have an interlocking safety system and shall be Full Type Approved by the Highways Agency. The bollard system shall adhere to a risk assessment level 3 European directive. The requirements of a safety system to control this category of risk assessment are as follows (extract from section 7 of EN954-1).
“Safety devices and control systems as a minimum must be designed, selected and assembled to meet the operational requirements of design limits and influence of the process materials and other external influences. The complete safety control system shall be designed so that any single fault shall not lead to the loss of the safety function and, where practical, the single fault shall be detected. This now calls for not only redundancy in the interface but also in the input devices, pointing to dual channel systems”.
Peripheral Control Equipment
Emergency Deployment Function.
A hydraulic circuit consisting of a pressure reserve, interconnecting lines and valves can be supplied as an option. This circuit shall provide an available source of power to deploy the bollard(s) in an emergency and at speed even in the event of power failure.
The final specification of devices required to operate the system will be discussed and issued at a later date but may include devices such as OMU, Transponder/Tag, Proximity Card, Radio Transmitter, Key Pad, Intercom, Vehicle Number Plate Recognition. This list is by no means exhaustive and the system shall be flexible enough to incorporate such devices.
Performance
Experience
The bollard system shall be Type Approved by the Highways Agency and certification will be required with the tender details. The manufacturer shall have systems installed and in operation in the United Kingdom with documented logs of all major components and design features.
Speed of Operation
Normal speed of operation shall be capable of raising or lowering the bollards between 5 and 8 seconds when operated at a repetition rate not greater than specified in 6.3. The control system shall be capable of reversing the bollard upward cycle at any time on a valid demand from the devices controlling the system.
Frequency of Operation
The bollard shall be capable of insert up/down cycles per day.
Accreditation
The bollard system and design have been impact rated by an internationally recognised independent testing centre and has successfully stopped a vehicle travelling at 40mph, weighing 7.5 Tonnes.
High Energy Attack
The bollard(s) by accreditation are capable of stopping and immobilising vehicles with weight and velocity characteristics as described in 6.4. The bollard(s) are designed to destroy the front suspension, steering linkage and engine casing.
The bollard(s) system is designed to stop a vehicle attacking, with weight and velocity characteristics as described in 6.4, from either direction.
Environment Data
The bollard system shall operate satisfactorily under the following environmental conditions:
Extremes in Temperature
The bollard system shall operate between the following temperatures.
Normal Operating Temp for Control System: 40deg C to -15deg C
Maximum Operating Temp for Hydraulic Oil: 90deg C
Minimum Operating Temp for Hydraulic Oil: – 54deg C
Rainfall
It is recommended the bollard outer casings are connected to a drain, if this is not practical then a natural soak away should be constructed. It is imperative to note that a natural soak away should only be considered if connection to a drain is not practical, the success of a natural soak away will be dependant on the ground conditions.
Quality Assurance
The manufacture will be accredited to ISO 9001/2000
Testing
Upon completion of the system build the bollard system will be fully tested at the manufactures facility. The client will be invited to the Factory Acceptance Test for signing off to verify functionality, operating speeds, workmanship and the finished colour is matched against the order placed.
Shipment
The system will packaged in a sufficient manner for transport in the UK so that the risk to damage is minimal. Export shipments shall be crated and be of sufficient structural integrity to be lifted and transported by overhead crane or forklift truck without failure.
Warranty
The system shall carry a full 12 months parts and labour warranty. The manufacturer must be able to extend the warranty to cover a 5 year parts and labour maintenance agreement at the placement of order if required by the client.
Manufacturer’s Data
Drawings and Installation Data
Method Statements, Risk Assessments, site specific layout and duct drawings shall be sent to the purchaser within four weeks of placing an order.
A full operating manual will be issued on handover of the system.
Disclaimer
Careful consideration must be devoted to the selection, design and location of an automatic rising bollard system in the same manner as any other product that may be used to close off a roadway. Care must be taken to ensure approaching vehicles and pedestrians are made fully aware that automatic rising bollards are in operation through appropriate signage.
