AS 1085.18:2003 pdf – Railway track material Part 18: Screw spikes and threaded inserts

AS 1085.18:2003 pdf – Railway track material Part 18: Screw spikes and threaded inserts.
This Appendix sets out the following different means by which compliance with this
Standard can be demonstrated by the manufacturer or supplier:
(a) Faluation by means of statistical sampling.
(b) The use of a product certiFication scheme.
(c) Assurance using the acceptability of the supplier’s quality system.
(d) Other such means proposed by the manufacturer or supplier and acceptable to the customer.
B2 STATISTICAL SAMPLIN(;
Statistical sampling is a procedure that enables decisions to be made about the quality of hatches of items alter inspecting or testing only a portion of those items. This procedure will only be valid if the sampling plan has been determined on a statistical basis and the following requirements are met:
(a) The sample needs to he dran randomly from a population of product of known history. The history needs to enable verification that the product as made from known materials at essentiall the same time, by essentially the same processes and under essentially the same system of control.
(b) For each different situation, a suitable sampling plan needs to be defined. A sampling plan for one manufacturer of given capability and product throughput may not be relevant to another manufacturer producing the same items.
In order for statistical sampling to he meaningful to the customer, the manufacturer or supplier needs to demonstrate ho the above conditions have been satisfied. Sampling and the establishment of a sampling plan should be carried out in accordance with AS 1199, guidance to ‘.hich is given in AS 1399.
113 PROI)I’CT CFRTIFICATION
The purpose of product certification is to provide independent assurance of the claim by the manufacturer that products comply ith the stated Standard.
The certification scheme should meet the criteria described in IIB 18.28 in that, as well as full type testing from independently sampled production and subsequent verification of conformance, it requires the manufacturer to maintain effective quality planning to control production.
The certification scheme serves to indicate that the products consistently conform to the requirements of the Standard.
Where the manufacturer or supplier can demonstrate an audited and registered quality management system complying with the requirements of the appropriate or stipulated Australian or international Standard for a supplier’s quality management system or systems. this may provide the necessary confidence that the specified requirements will be met. The quality assurance requirements need to be agreed between he customer and supplier and should include a quality or inspection and test plan to ensure product conformity.
Information on establishing a quality management system is set out in ASINZS ISO 9001 and ASINZS ISO 9004.
B OTHER MEANS OF ASSESSMENT
lithe aho%e methods are considered inappropriate, compliance with the requirements of this Standard may be assessed from the results of testing coupled with the manufacturer’s guarantee of product conformance.
Irrespective of acceptable quality levels (AQLs) or test frequencies, the responsibility remains with the manufacturer or supplier to supply products that conform to the full requirements of the Standard.