Heard at the June 17, 1999, Public Hearing
Adopted on November 18,1999
Approved by OAL on April 13, 2000
Effective May 13, 2000
Amend Section 3065 to read:
§3065. Car and Counterweight Safeties.
Car safeties, where provided, shall conform to the requirements of Section
3035 and to the following:
(a) If a car safety is provided, it shall engage the guide rails to produce
a retarding force, and it shall conform to the requirements of Section 3035
and the following:
(1) The safety shall be of a type which can be released only by moving
the car in the up direction.
(b) The switches required by Section 3036(d) shall, when opened
operated, remove power from the driving machine motor and control valves
before or at the time of application of the safety. (Title 24, Part 7, Section
7-3065)
(b) If a plunger engaging safety device (PESD) is provided in direct plunger
hydraulic elevators, it shall engage the plunger to produce a retarding force,
and it shall be designed and approved for that purpose. See Section 3106.1 for
required approval data.
(1) The PESD shall:
(A) be the type that can only be released by establishing at least no load pressure
on the hydraulic system,
(B) be responsive to a pressure decrease in the system,
(C) be field testable,
(D) be field tested during the acceptance test. The test shall be witnessed
by the Division before a permit to operate is issued. The test shall be conducted
at no less than the operating speed in the down direction with a capacity load
on the car, to demonstrate that the PESD shall stop the elevator with its capacity
load.
(2) Further, the PESD shall:
(A) be tested annually for proper operation with no load,
(B) when actuated, operate a switch that shall cut off the power from the operating
valves and pump motor. This switch shall reset only upon release of the PESD.
(3) The PESD shall have a metal plate or plates, permanently attached and readily
visible, marked with legible and permanent letters and figures not less than
¼ inch high indicating the following:
(A) the name of the PESD manufacturer and the identifying numbers,
(B) the date the PESD was initially tested and witnessed,
(C) the diameter and wall thickness of the plunger for which the PESD is designed,
(D) the maximum weight, in pounds, for which the PESD is designed,
(E) the maximum speed for which the PESD is designed, and,
(F) the shim adjustment range.
(4) The PESD may be used on new elevators that are covered by regulations in
Group III and existing elevators that are covered by regulations in Group II.
(5) The runby clearance may be reduced to no less than one inch on existing
hydraulic elevators if a PESD is provided.
(6) The subsequent 5-year load tests per Section 3071(j) will not be required
when the hydraulic elevator is equipped with a PESD that complies with the provisions
of Section 3065(b) above. (Title 24, Part 7, Section 7-3065)
NOTE: Authority cited: Section 142.3, Labor Code. Reference : Section 142.3,
Labor Code.
Amend Section 3067 to read:
§3067. Hydraulic Driving Machines, Plungers, and Cylinders, and System
Oil Level.
* * * *
(d) System Oil Level.
(1) The hydraulic system oil level shall be monitored by a qualified person
or an approved monitoring system to ensure the system oil level is within the
manufacturer's recommended level.
(2) When the oil is below the recommended level, and the quantity of oil loss
is not accounted for, the elevator shall be taken out of service and the Division
shall be notified within 48 hours.
(A) The elevator shall remain out of service until the cause of the unaccounted
oil loss is determined and corrected.
(Title 24, Part 7, Section 3067)
NOTE: Authority cited: Section 142.3, Labor Code. Reference: Section 142.3,
Labor Code. (Title 24, Part 7, Section7-3067)
Add new Section 3106.1 to read:
§3106. Car and Counterweight Safety Stopping Distance and Approval Data.
* * * *
§3106.1. Plunger Engaging Safety Device for Direct Plunger Hydraulic Elevators.
(a) Plunger Engaging Safety Device Design and Operation. The plunger engaging
safety device (PESD), when used on direct plunger hydraulic elevators to stop
uncontrolled descent due to loss of pressure, shall comply with the following
requirements:
(1) The forces applied to the plunger shall be compressive and distributed over
the circumference of the plunger when the PESD is actuated. The force shall
not exceed 28% of the plunger yield stress.
(2) Supports for the PESD shall be capable of withstanding a kinetic force of
115% of the total load stopping with a deceleration of 1 g.
(3) The PESD shall;
(A) actuate when there is a loss of hydraulic pressure that could cause the
elevator to go into an out-of-control descent,
(B) not release the plunger if there is downward motion of the plunger,
(C) be fully operational during a primary electrical system power failure, and
(D) have sufficient running clearance between the gripping surface and the plunger
to not adversely affect the plunger or the gripping surface.
(4) The PESD bearings, when used, shall be corrosion resistant.
(5) Parts of the PESD and supports, except springs, shall have a safety factor
of not less than 3.5. The materials used shall have an elongation of not less
than 15% in length of 2 inches. Forged, cast or welded parts shall be stress
relieved. Roller chains, if provided, shall comply with ASME B29.1M-1993, "Precision
Power Transmission Roller Chains, Attachments, and Sprockets," which is hereby
incorporated by reference. Wire rope, if provided, shall comply with Section
3107.
(b) Data Required for Approval.
(1) Two complete sets of detail drawings showing the assembly of the PESD shall
be submitted to the Division and shall show the following:
(A) The construction of the PESD and the dimensions of major parts for identification.
(B) The shim adjustment range indicated on the safety marking plate required
by Section 3065(b)(3).
(C) Indication of how the clamping surfaces are held in the released position.
(2) The results of performance tests conducted by the manufacturer or approved
testing laboratory. These tests shall be conducted to demonstrate that the PESD
will function satisfactorily within the range of loads and speeds for which
the PESD is to be approved.
(c) Performance Tests Required for PESD Approval.
(1) Tests to indicate that surfaces subjected to friction by the PESD will not
reduce the reasonable life expectancy of such surfaces.
(2) Tests to indicate the gripping mechanism of the device does not adversely
affect the plunger.
(Title 24, Part 7, Section 7-3106.1)
NOTE: Authority cited: Section 142.3, Labor Code. Reference: Section 142.3,
Labor Code.