API RP 591:2003 pdf download
API RP 591:2003 pdf download.Process Valve Qualification Procedure.
4 Purchaser Responsibilities
4.1 Ills the responsibility of the purchaser to verify the source of supply to assure thai purchased valves are newly manufactured in accordance with the applicable standards.
4.2 Ii is the responsibility of the purchaser to determine thai the valve manufacturer can supply valves that meet the referenced API valve standards, and that the manufacturer continues to supply valves of appropriate quality. The purchaser shall also verify that the manufacturer has a working quality assurance program. The essential elements of a quality assurance program are described in Section 5.
4.3 As part of the review and evaluation, the purchaser or his representative may survey the valve manufacturer’s shops, and, as the purchaser deems appropriate. may survey the thcilities of primary suppliers to the valve manufacturer, such as foundries and forge shops. The valve manufacturer shall provide access, upon request, at times that are mutually agreed. At the conclusion of a manufacturing facility survey, the purchaser or his representative shall conduct an exit interview with the facility managers for the purpose of communicating observed nonconforming activities, if any.
5 Manufacturer Quality Assurance Program
5.1 GENERAL
The manufacturer shall establish and maintain a quality assurance group that shall be responsible ftr establishing and maintaining a quality assurance program.
The quality assurance program shall follow the principles of an appropriate standard from the ISO 9(XX) series.
The quality assurance group shall be independent from the manufacturing department. and shall have the authority. access to work areas, and organizational freedom to identify quality problems: initiate solutions and verify the implementation of the solutions.
When a problem is discovered, the quality assurance group shall assure that further processing. delivery, installation, or use is controlled until proper disposition has been made of the nonconfomant, deficient, or unsatisfactory condition.
5.2 DOCUMENTATiON
5.2.1 General
The organizational structure, functional responsibilities, levels of authority, and lines of communication for activities that affect quality shall be documented. The manufacturer shall establish and maintain documented procedures to con trol and verify the design of the product to assure that specified requirements are met.
5.2.2 Design Input
Design basis. perfomiance requirements. and codes and standards, shall be identified and documented.
5.2.3 Document Control
The preparation. distribution, and modification of docutuents. such as dras%ings, specifications, and procedures that specify quality requirements or prescribe activities affecting quality shall be controlled o assure that the correct versions of the documents are employed.
5.3 CONTROL OF PURCHASED ITEMS AND SERVICES
5.3.1 General
Purchased items and services shall be controlled by the manufacturer to assure conformance with the specified requirements. This control shall provide for the following as appropriate:
a. F,valuation and selection of the source.
b. Evaluation of objective evidence of quality. tiwnished by the supplier.
c. Inspection, audit, and examination of items and services upon delivery or completion.
d. Confirmation of a quality assurance program consistent with the requirement of this recommended practice.
5.3.2 Receiving Inspection
The manulacwrer sli.ill use receiving inspecfion to verity the conformance by a supplier to the specifled requirements. The manufacturer shall establish acceptance criteria for the items inspected. If the procurement documents require the supplier to furnish documentation, the receiving inspection shall he coordinated with a review of’ the supplier’s documentation.
5.3.3 Control of Supplier Nonconformances
The manufocturer shall establish and document methods for the disposition of items that do not meet the requirements of the procurement documents.
