AS 3785.3:2005 pdf – Underground mining- Shaft equipment Part 3: Drum winding gripper systems

AS 3785.3:2005 pdf – Underground mining- Shaft equipment Part 3: Drum winding gripper systems.
6 TESTING
6.1 General
Each new type of gripper system shall be subjected to the type test specified in Clause 6.2, and each component of every gripper system shall be subjected to the component test specified in Clause 6.3.
6.2 Type test
6.2.1 Purpose
The type test is intended to ensure that each type of gripper system will act in conjunction with the timber guides to stop and safely support the conveyance in response to a loss of hoist rope tension.
6.2.2 Procedure
A gripper system shall be type tested by free-fall testing using timber guides of the specified material and with the minimum cross-section dimensions, and drop weights equal in mass to—
(a) dead load; and
(b) working load limit.
For each of the above drop weights, the gripper system shall be attached to the drop weight in the same manner as it would be attached to the conveyance. The assembly shall then be suspended within timber guides using the same attachment point as would be used to suspend the conveyance.
A suitable quick-release mechanism of adequate capacity shall be incorporated above the gripper/drop weight assembly being tested. This release mechanism shall be released and. for each drop weight. the distance through which it falls as the gripper system engages the guides and stops the drop weight shall be recorded.
6.3 Component test
6.3.1 Purpose
The component test is intended to ensure that each component of every gripper system is free from defects that could significantly affect its mechanical properties and performance.
6.3.2 Procedure
Each component of every gripper system shall be subjected to non-destructive test
procedures and other tests as appropriate.
7 TEST CERTIFICATES
7.1 Certificates required
The following certificates shall be provided with each gripper system:
(a) A type test certificate for the gripper system.
(b) Component certificates for each component of the gripper system.
Each certificate shall bear the name and address of the manufacturer, the date of test and the name, qualification, and status of the signatory of the testing organization. A copy of each certificate shall be retained by the manufacturer and the supplier.
(c) Results of tests.
(d) Dead load.
(e) Working load limit.
The certificate shall declare that the assembly has been inspected by a responsible and competent person and that it complies with the requirements of the type test.
7.3 Component test certificate
Each component certificate shall state the following information:
(a) Serial number of component.
(b) Description of component.
(c) Material specification including impact properties (see Clause 4).
(d) Details and results of tests.
Each certificate shall declare that the component has been inspected by a responsible and competent person and complies with the requirements of the component test.