N.H. Admin. Code § Pas 305.06

Current through Register No. 35, August 29, 2024

Section Pas 305.06 - Seven-Year Dynamic Testing

(a) All aerial tramways shall be dynamically tested every 7 years. A state inspector or designee of the board shall witness the test.

(b) A written procedure prepared by the manufacturer or a qualified engineer reflecting the latest modifications to each lift shall be used as part of the testing.

(c) The following materials shall be available for the inspection:

(1) The as-built documentation for mechanical equipment, electrical system, tower loadings geometry, and tensioning system; and

(2) A copy of the last load test or periodic dynamic test with recorded parameters for comparison.

(d) The written procedure for the dynamic test shall include, at a minimum:

(1) Testing for proper functioning of all electrical safety switches, including but not limited to:

a. Line tower and lift terminal deropement switches;

b. Manual stop, start and slow switches;

c. Tension system limit switches for mechanical travel and for pressure limits;

d. Collision control switches and systems;

e. Brake monitoring switches;

f. Overspeed devices;

g. Field loss and phase loss detection, as appropriate;

h. Brake trip switches; and

i. Speed control circuit loss detectors;

(2) Verification of basic design parameters, including:

a. Lift speed;

b. Carrier spacing;

c. Tensioning values;

d. Line geometry, such as the general conformance to design drawings;

e. Capacity and torque value of all brakes;

f. Quantity and condition of line sheaves;

g. Lift acceleration and deceleration rates; and

h. Carrier weights, configurations, and condition;

(3) A suitable load test to verify that the following devices are functioning properly for all loading conditions, such as uphill, downhill and simultaneous uphill and downhill loading:

a. Prime mover system;

b. Auxiliary drive system;

c. Evacuation drive system; and

d. All braking systems in each mode of design operation.

(e) For the purposes of (d)(2)d. above, a survey shall not be required unless an apparent discrepancy exists between field observations and existing as-built drawings.

N.H. Admin. Code § Pas 305.06

#7800, eff 12-11-02; amd by #9354-B eff 1-3-09; EXPIRED: 12-11-10, except for para (f); ss by #10072, eff 1-11-12; amd by #10382, eff 7-23-13

Amended by Volume XL Number 7, Filed February 13, 2020, Proposed by #12989, Effective 2/5/2020, Expires 2/5/2030.