3 CCR 718-1-2 - Aerial Tramways

Note: Timeframes relate to the ropeway installation date or modification date whichever controls, unless otherwise noted. For electrical drive or control system modifications performed on aerial tramways installed prior to April 15, 2019, the requirements of ANSI B77.1-2011 shall be met (Refer to Annex R.2).

IN ADDITION TO ANSI 2.1.1.3 Location

2.1.1.3.1 Location of power lines. Power lines shall be located a minimum distance equal to the height of poles or support structures from any passenger tramway so that poles and electrical lines cannot touch any portion of the tramway, loading or unloading points or platforms and tow path, if applicable, upon collapse of poles or lines, unless suitable and approved precautions are taken to safeguard human lives.

2.1.1.3.2 Air space requirements.

2.1.1.3.2.1 Structures.

Note: Timeframes stated for this Rule define the air space requirements for each ropeway at the time when the encroachment was known to the area and DO NOT pertain to the installation date of the ropeway.

No passenger tramway installation shall be permitted to operate when a structure encroaches into the air space of the passenger tramway, defined as the area bounded by vertical planes commencing at a point thirty-five feet from the intersection of the vertical planes of the ropes or cables and ground surface.

For purposes of this Rule, buildings controlled by the licensee used primarily for maintenance and operation of the lift and other tramways shall not be considered structures; however, buildings must comply with the following.

(1) No flammable liquids may be stored in the building outside of a UL listed container or storage cabinet, unless such flammable liquids are in the original containers and intended for daily usage. Quantities must be consistent with normal daily use. Class I or II flammable storage materials shall be limited to two gallons in a UL listed container and must be stored either in an outside storage area or in a UL listed cabinet.

(2) The building must be within the view of the attendant but not impair the sight line of the lift.

(3) Entrances to all machinery, operators', and attendants' rooms shall be locked when not in use. Unattended entrances accessible to public, which may be left open, shall be equipped with barriers to prevent entry.

2.1.1.3.2.2 Cables or ropes.

Note: Timeframes stated for this Rule define the air space requirements for each ropeway at the time when the encroachment was known to the area and DO NOT pertain to the installation date of the ropeway.

Any cable or rope installed on or near a ropeway that may represent a hazard to the ropeway shall be monitored to automatically stop the ropeway if the cable or rope fails. Failure would be defined as per Section 23.1 (g).

EXCEPTION: Track or haul ropes are excluded from this Rule.

2.1.1.11.2 Acceptance tests.

ADDITIONAL PARAGRAPH ADDED:

Any changes to software logic that would affect a Safety Related Control Function, Control Function, Protection Circuit, or Operation Circuit after the start of initial testing shall result in a restart of testing to ensure software logic changes have not affected those systems already tested. Retesting for changes in software parameters shall be at the discretion of the Authorities Having Jurisdiction (AHJ).

REPLACES ANSI FOR SPECIFIC TIMEFRAMES

2.1.2.1.3 Power Unit Interlock

Prior to April 17, 2006:

Not required

REPLACES ANSI FOR SPECIFIC TIMEFRAMES

2.1.2.6 Brakes.

Prior to April 17, 2006:

The aerial tramways shall have the following friction-type brakes:

- service brake (see 2.1.2.5.1);

- drive sheave brake (see 2.1.2.5.2);

- track cable brake (see 2.1.4.3.2).

All drive braking systems shall be designed and monitored to ensure that:

a) Once the aerial tramway begins movement in the intended direction, the brakes are maintained in the open position;

b) The service brake shall not open prior to the drive system developing torque;

c) Multiple brakes or brake systems shall not be simultaneously applied such that excessive deceleration is applied to the aerial tramway under any condition of loading;

d) The failure of one braking system to properly decelerate the aerial tramway shall automatically initiate a second braking system, if any.

The service brake and drive sheave brake shall be designed such that failure of one braking system shall not impair the function of the other systems, and all brakes shall have the braking force applied by springs, weights, or other approved forms of stored energy.

The service brake and drive sheave brake shall be designed to assure operation under all anticipated conditions.

Deceleration rates specified in 2.1.2.4 shall be achieved by each brake without the aid of other braking devices or drive regeneration.

All drive braking systems shall be capable of operation to comply with the daily inspections and periodic testing.

A qualified engineer shall furnish a written procedure to be followed and specify the auxiliary equipment necessary for periodic testing and adjustment of the holding force of each brake. This procedure shall be performed during the acceptance test, and at the frequency specified, to demonstrate the ability of each brake to produce the required torque.

Such testing shall be accomplished as part of normal maintenance during the operating season, but shall be performed when the aerial tramway is not open to the public.

2.1.2.6.2 Bullwheel brake.

Prior to April 17, 2006:

Drive sheave brake controls shall be located and the brake activated in a manner that deceleration will begin within three seconds after the operator or attendant reacts to the stimulus to apply the brake.

The drive sheave brake shall operate on the drive sheave assembly.

Application of the drive sheave brake shall automatically disconnect the power source to the power unit in use. This brake shall act automatically when the speed of the haul rope exceeds the design speed by 15% in either direction or if the carriers travel beyond their normal stopping position in either terminal.

The drive sheave brake shall be an automatic brake to stop and hold the aerial tramway under the most unfavorable design loading condition. The rate of application of this brake shall be adjustable. This brake shall have the design capability to decelerate the aerial tramway operating at full speed, with the design loading condition most unfavorable to stopping, at 1.5 feet (0.5 meter) per second squared and within the parameters specified in 2.1.2.4.

REPLACES ANSI FOR SPECIFIC TIMEFRAMES

2.1.2.7.3 Entrance and Egress

Prior to Jan 1, 1994

Not required

REPLACES ANSI FOR SPECIFIC TIMEFRAMES

2.1.3.4 Track cable saddles and mounts.

Prior to April 15, 2019:

Cable catchers shall be provided on the saddles on both sides of each track cable. Cable catchers are not required if the track cable shoes are designed to reduce the risk of deropement. The radius of a track cable saddle shall be determined by the one of the following criteria that requires the largest radius:

a) To be large enough to minimize bending stresses in the cable. In any event, the radius shall be equal to at least 1200 times the largest dimension of the outer wire of the cable;

NOTE- In shaped wire, consider the greater dimension (width or height) not diagonal measurement.

b) To be large enough to provide smooth transition of the carriage assembly from span to span;

c) To be large enough to reduce the bearing pressure to a value that will permit proper lubrication of the cable to facilitate sliding in the saddle groove;

d) To be large enough so that the radial acceleration of the carrier is not greater than 6.6 feet (2.0 meters) per second squared calculated as follows:

V2/R is not greater than 6.6 feet (2.0 meters) per second squared

V= Carrier speed in feet (meters) per second

R= Radius of shoe in feet (meters)

The minimum pressure on the saddle shoes shall be not less than 1.5 times the pressure required to hold the rope in contact with the shoes when a wind force of six pounds per square foot (290 pascals) is applied upwards on the rope, parallel to the reaction on the tower.

The saddle shall be long enough to ensure that, under maximum design loading conditions, the cable will not come into contact with the end of the saddle groove.

Saddles shall be designed so that the track cable brake, if any, may function at the time the carrier is passing the saddle without deropement of the carriage wheels.

Saddles shall permit free passage of the carriage even when the carrier is swinging laterally to its design limit as it approaches or passes the tower.

If the gauge of the aerial tramway is varied at any point along the line, horizontal departure at any one tower shall be kept to a minimum to avoid deropement of the carriage wheels as they pass over the saddle.

Systems without track cable brakes shall have the saddles encircle the track cables not less than 180 degrees.

REPLACES ANSI FOR SPECIFIC TIMEFRAMES

2.2.1.5.5 Ground fault interrupter protection for personnel.

Prior to May 15, 2006:

Not required.

REPLACES ANSI FOR SPECIFIC TIMEFRAMES

2.2.2 Electrical system function design and classification.

Prior to April 15, 2019:

Refer to R.2.2.2.

2.2.2.1 Function priority.

Prior to April 15, 2019:

Refer to R.2.2.2.1

REPLACES ANSI FOR SPECIFIC TIMEFRAMES

2.2.3 Safety related control functions

Prior to April 15, 2019:

Refer to R.2.2.3, R.2.2.4, or R.2.2.5 as applicable.

2.2.3.1 Emergency shutdown

Prior to April 15, 2019:

Refer to R.2.2.3.1

2.2.3.2 Carriage overtravel detection device

Prior to April 15, 2019:

Refer to R.2.2.3.2

2.2.3.3 Tension system monitoring

Prior to April 15, 2019:

Refer to R.2.2.3.3

2.2.3.4 Deropement Detection

Prior to April 15, 2019:

Refer to R.2.2.3.4

2.2.3.5 Overspeed monitoring

Prior to April 15, 2019:

Refer to R.2.2.3.6

2.2.3.6 Speed regulation check points

Prior to April 15, 2019:

Refer to R.2.2.3.8

2.2.3.7 Acceleration/deceleration monitoring

Prior to April 15, 2019:

Refer to R.2.2.5.2

2.2.4 Control functions

Prior to April 15, 2019:

Refer to R.2.2.3, R.2.2.4, or R.2.4.5 as applicable.

2.2.13 Aerial tramway data recording

Prior to July 15, 2023:

Not required

IN ADDITION TO ANSI 2.3.1 General and personnel safety

2.3.1.3 Operational plan for transportation of recreational equipment. Each licensee shall have an operational plan that has procedures for transportation of sports equipment and recreational devices by foot passengers. This plan shall be consistent with the tramway manufacturer's specifications and instructions, if any.

IN ADDITION TO ANSI 2.3.2.5 Operation requirements

2.3.2.5.10 Preoperational minimum ridership requirements.

Each licensee shall have an operational plan that identifies criteria for pre-operational tramway inspections for the transportation of personnel on aerial ropeways. Implementation of these procedures is intended for the protection of all personnel and shall be the responsibility of the area operator, supervisor, and the authorized individual.

The preoperational plan shall include, but not be limited to:

Minimum Requirements

Prior to the daily preoperational ride and the completion of X.3.2.4.2 Daily preoperational inspection, or any initial start-up of the ropeway, the following minimum steps shall be taken;

1. At least one brake and stop switch has been operated and proves to function properly, and either items two or three are performed.

2. The ropeway is operated slowly for a minimum of three minutes, or a length of time equal to the time a carrier takes to cross the longest span on the installation.

3. The lift line is visually inspected in one of two ways:

a) The entire lift line is visually inspected from the ground by trained personnel.

b) The lift line inspection occurs while riding the aerial ropeway. If this method is used, the first rider shall be in constant communication with the operator.

The plan shall also include the following requirements:

i) Evacuation of pre-ride personnel. The number of available evacuation personnel, the method of transportation of those persons, the required evacuation equipment and the method of transport of evacuated personnel.

ii) Trained operational and maintenance availability. A

requirement that trained operational and maintenance personnel shall be immediately available to attempt to restart the tramway if the tramway stops.

For the purpose of this Rule, "area employee" means an individual:

(1) who performs services for an area operator, as that term is defined by section 12-150-103(1), C.R.S.;

(2) who receives financial compensation directly from the area operator for those services; and

(3) whose services only the area operator has the right to control (i.e., the area operator has the right to direct the services the individual will perform for the area operator and how the individual will perform those services).

A. For Licensed Ropeways and Unlicensed Ropeways After Initial

Testing, including Expired Licenses

An area employee that is directly related to the opening of the aerial lift (i.e. Ski Patrol, Lift Maintenance, and Lift Operators) shall conduct the pre-operational inspection ride. If any other area employee is to ride the lift prior to the completion of the pre-operational inspection, the personnel responsible for the pre-operational inspection ride shall ride in the first carriers in front of the area employee. As used in this Rule, the term "area employee" specifically excludes independent contractors, subcontractors, vendors, and their personnel.

B. Unlicensed Ropeways Prior to Testing and Licensing

Only personnel related to the completion of the construction, operation, and buildings directly related to the operation of the tramway may be transported by the tramway prior to testing and licensing.

IN ADDITION TO ANSI 2.3.5 Records

2.3.5.6 Software parameter log.

A software parameters log shall be maintained for each aerial lift. This log is intended for changes in software parameters that can be altered which affect the supervision circuit. The log shall include, but not be limited to:

a) Current software parameter values;

b) Changes to software parameter values;

c) Date of changes made;

d) Documentation of testing for each change of parameter values;

e) Personnel making parameter changes.

Notes

3 CCR 718-1-2

37 CR 11, June 10, 2014, effective 7/1/2014 37 CR 18, September 25, 2014, effective 11/1/2014 38 CR 06, March 25, 2015, effective 5/1/2015 38 CR 18, September 25, 2015, effective 11/1/2015 40 CR 06, March 25, 2017, effective 5/15/2017 40 CR 11, June 10, 2017, effective 7/1/2017 42 CR 05, March 10, 2019, effective 4/15/2019 46 CR 12, June 25, 2023, effective 7/15/2023