A description of the proposed changes are as follows:
| 1. | TITLE 8: | ELEVATOR
SAFETY ORDERS |
The informative digest contains occupational safety and health regulations which are building standards for codification in Title 24, Part 7, California Elevator Safety Code. The building standards, herein, will be identified by their Title 24 section number in italic type following the corresponding Title 8 informative digest.
Article 9. Hydraulic Elevators
Section 3065. Car and Counterweight Safeties.
Section 3065(a)
Existing Section 3065(a) specifies that car safeties, where provided, shall conform to the requirements of Section 3035 and that the safety shall be of a type which can be released only by moving the car in the up direction.
Proposed Section 3065(a) will allow hydraulic elevator owners the option of providing elevator car safety devices provided they produce retarding force and comply with the requirements of Section 3035 and Sections 3065(a)(1).New Section 3065(a)(1)
Proposed new Section 3065(a)(1) is a redesignation of existing Sections 3065(a)
and (b). All of the requirements in existing Sections 3065(a) and (b) are retained in
proposed new Section 3065(a)(1).
Title 24, Part 7, Section 7-3065(a)(1)
Section 3065(b)
Existing Section 3065(b) specifies that the switches required by Section 3036(d)
shall, when operated, remove power from the driving machine motor and control valves
before or at the time of application of the safety.
Proposed Section 3065(b) will specify that if a PESD is provided on a direct plunger hydraulic elevator, it shall engage the plunger to produce a retarding force, and it shall be designed and approved for that purpose. This Section will reference Section 3106.1 for required PESD approval data.
Proposed Section 3065(b) will, in effect, permit owners of direct plunger hydraulic
elevators to provide a PESD on direct plunger hydraulic elevators if it is the type that
engages the plunger to produce a retarding force, and if the device is designed and
approved for that purpose. Further, elevator owners choosing to provide a PESD shall
provide one that complies with the requirements of proposed new Sections 3065(b)(1)(A)
– 3065(b)(6).
Title 24, Part 7, Section 7-3065(b)
New Section 3065(b)(1)(A)
Proposed new Section 3065(b)(1)(A) will require that the PESD shall only release
by establishing no load pressure on the hydraulic system.
Title 24, Part 7, Section 7-3065(b)1.A.
New Section 3065(b)(1)(B)
Proposed new Section 3065(b)(1)(B) will require the PESD to be responsive to
pressure.
Title 24, Part 7, Section 7-3065(b)1.B.
New Section 3065(b)(1)(C)
Proposed new Section 3065(b)(1)(C) will require that the PESD can be function
tested after the device is installed on the elevator.
Title 24, Part 7, Section 7-3065(b)1.C.
New Section 3065(b)(1)(D)
Proposed new Section 3065(b)(1)(D) will require the PESD to be tested during the
acceptance test at no less than the operating speed in the down direction with a capacity
load on the car to demonstrate that the device will stop the elevator with its capacity
load. The test shall be witnessed by the Division before a permit to operate will be
issued.
Title 24, Part 7, Section 7-3065(b)1.D.
New Section 3065(b)(2)(A)
Proposed new Section 3065(b)(2)(A) will require the PESD to be annually tested
for proper operation with no load.
Title 24, Part 7, Section 7-3065(b)2.A.
New Section 3065(b)(2)(B)
Proposed new Section 3065(b)(2)(B) will require that the PESD, when actuated,
operate a switch that shall cut off the power from the operating valves and pump motor.
The switch shall reset only upon release of the PESD.
Title 24, Part 7, Section 7-3065(b)2.B.
New Section 3065(b)(3)
Proposed new Section 3065(b)(3) will require the PESD to 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 with the following:
A. the name of the manufacturer and the identifying numbers of the device,
B. the date the device was initially tested and the test witnessed,
C. the diameter and wall thickness of the plunger for which the particular device is
designed,
D. the maximum weight, in pounds, for which the device is designed,
E. the maximum speed for which the device is designed, and
F. the shim adjustment range.
Title 24, Part 7, Section 7-3065(b)3.
New Section 3065(b)(4)
Proposed new Section 3065(b)(4) will permit elevator owners to install a PESD on
new and existing elevators.
Title 24, Part 7, Section 7-3065(b)4.
New Section 3065(b)(5)
Proposed new Section 3065(b)(5) will permit owners of existing hydraulic
elevators to reduce the runby clearance from existing runby requirements when the PESD is
provided.
Title 24, Part 7, Section 7-3065(b)5.
Section 3065(b)(6)
Proposed Section 3065(b)(6) will permit owners of hydraulic elevators to forgo
the 5-year load test per Section 3071(j) when a PESD that complies with the requirements
of Section 3065(b) is provided.
Title 24, Part 7, Section 7-3065(b)6.
Article 9. Hydraulic Elevators
Section 3067. Hydraulic Driving Machines, Plungers, Cylinders, and System Oil Level.
New Section 3067(d)(1)
Proposed new Section 3067(d)(1) will require hydraulic elevator owners to ensure the
hydraulic system oil level is monitored by a qualified person, or an approved monitoring
system, to ensure the system oil level is within the manufacturer’s recommended
level.
Title 24, Part 7, Section 7-3067(d)1.
New Section 3067(d)(2)
Proposed new Section 3067(d)(2) will require hydraulic elevator owners to take
the elevator out of service and notify the Division within 48 hours when the oil level is
below the recommended level and the quantity of oil loss is not accounted for.
Title 24, Part 7, Section 7-3067(d)2.
New Section 3067(d)(2)(A)
Proposed new Section 3067(d)(2)(A) will require hydraulic elevator owners to keep
the elevator out of service until the cause of the unaccounted oil loss is determined and
corrected.
Title 24, Part 7, Section 7-3067(d)2.A.
Article 18. Design Data, Formulas, Texts on Approved Devices, and Electrical
Regulations
Section 3106.1 Plunger Engaging PESD for Direct Plunger Hydraulic Elevators.
New Section 3106.1(a) Plunger Engaging PESD Design and Operation.
Proposed new Section 3106.1(a) explains that the purpose of the PESD is to
prevent uncontrolled descent due to loss of pressure on direct plunger hydraulic
elevators. This section will require that when a PESD is provided, it shall comply with
the following requirements:
(1) When the PESD is actuated, the forces applied to the plunger shall be compressive and
distributed over the circumference of the plunger. This 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 no 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. Wire rope, if provided, shall comply with Section
3107.
Title 24, Part 7, Section 7-3106.1(a)
New Section 3106.1(b) Data Required for Approval.
New Section 3106.1(b) will require owners of direct plunger hydraulic elevators
to submit the following data to the Division for approval of the PESD if it is used on
direct plunger hydraulic elevators:
(1) Two complete sets of detail drawings showing the assembly of the PESD. The drawings
shall indicate not less than the following:
(A) The construction of the PESD and the dimensions of major parts.
(B) The shim adjustment range indicated on the marking plates required by Section
3065(b)(3).
(C) Indication of how the clamping surfaces are held in the released position.
(2) Results of performance tests conducted by the manufacturer or approved testing
laboratory. The results shall indicate the device functioned satisfactorily within the
range of loads and speeds for which the device is to be approved.
Title 24, Part 7, Section 7-3106.1(b)
New Section 3106.1(c) Performance Tests Required for PESD Approval.
Proposed new Section 3106.1 (c) will require owners of direct plunger hydraulic
elevators that provide a PESD to submit the following test results to the Division:
(1) Tests to indicate the surfaces subjected to friction by the PESD will not reduce the
usual life expectancy of such surfaces.
(2) Tests to indicate the gripping mechanism of the PESD does not adversely affect the
plunger.
Title 24, Part 7, Section 7-3106.1(c)
DOCUMENTS INCORPORATED BY REFERENCE
This document is too cumbersome or impractical to publish in Title 8. Therefore, it is proposed to incorporate the document by reference. A copy of this document is available for review during normal business hours at the Standards Board Office located at 1300 I Street, Suite 920, Sacramento, California.