Oxygen Service Valve Manufacturing Regulations

Questions and Answers

What is the requirement for testing cast pressure containing components?

100% Surface Examination testing and 100% Radiography testing

What is the purpose of grinding casting surface irregularities?

To remove surface irregularities

After hydrostatic testing, what is the next step for the valve?

It is fully disassembled

What is a permitted cleaning method for valve components?

Alkaline (aqueous) cleaning as per EIGA 33/18 section 6.2.2 Signup and view all the answers

What is a requirement for valve components after hydrostatic testing?

They must be cleaned and free of contaminants and organic substances Signup and view all the answers

Why is it important to ensure valve components are free from burrs and sharp edges?

To ensure smooth operation and prevent damage to other components Signup and view all the answers

What is the purpose of packaging non-metallic sealing products in hermetically sealed plastic bags?

To prevent contamination Signup and view all the answers

What standard does the type-testing of Gate valves follow?

ISO 23632 Signup and view all the answers

Which of the following valve types follows the API 599 standard?

Lubricated plug valves Signup and view all the answers

What is a requirement for non-metallic sealing product manufacturers?

To have a procedure describing critical processes, controls, inspections, hold points, and records Signup and view all the answers

What specification does the type-testing of Globe valves follow?

API 623 Annex J Signup and view all the answers

What is the significance of the note mentioned in the table?

It provides an exception for rising stem designs Signup and view all the answers

What factors should the valve manufacturer consider when extending a qualification test to a product range?

All of the above, including stem packing protection and actuator orientation Signup and view all the answers

Which of the following valve types follows the IOGP S-562 standard?

Ball valves Signup and view all the answers

What is the effective date for valves to meet the requirements of section 5.1.4?

01 Jan 2023 Signup and view all the answers

What type of testing is required for valve designs categorized in Table 1 of ASME B16.34?

Type-testing in accordance with the specified industrial standard Signup and view all the answers

What standard does the type-testing of Butterfly valves follow?

ISO 23632 Signup and view all the answers

What materials are mentioned in the context of valve designs in ASME B16.34?

Steel, nickel-base alloys, and other alloys Signup and view all the answers

Why is stem packing protection important when the stem installation is orientated below horizontal?

To protect the stem from damage Signup and view all the answers

What is the purpose of type-testing in the context of valve manufacturing?

To qualify a product range Signup and view all the answers

Study Notes

Valve Manufacturing and Testing

The valve manufacturer shall ensure the non-metallic sealing product manufacturer has a procedure describing critical processes, controls, inspections, hold points, and records to demonstrate that parts are manufactured free from grease and oil and suitable for oxygen service.
Non-metallic sealing products shall be packaged in a hermetically sealed plastic bag to prevent contamination.

Casting and Surface Preparation

Cast pressure-containing components shall receive 100% Surface Examination testing and 100% Radiography testing.
Valve components shall be free from burrs, sharp edges, rust, dirt, or any other foreign particulates.
Casting surface irregularities shall be removed by grinding.
All surfaces shall be smooth.

Assembly, Testing, and Inspection

Valves shall be assembled and subject to hydrostatic shell and seat testing per the applicable valve design code.
After hydrostatic testing, the valve shall be fully disassembled.
Valve components shall be cleaned and free of any contaminants and organic substances (e.g., oil, grease, lubricants, adhesives, preservatives).
Permitted cleaning methods include alkaline (aqueous) cleaning and vapour degreasing using solvents as per EIGA 33/18.

Fugitive Emission, Seat Performance, and Operating Torque Type-Testing

Valve designs shall be qualified by type-testing in accordance with the specified industrial type-testing standard.
Type-testing shall be performed on valves manufactured after January 1, 2023.
The valve manufacturer's written procedure for rising stem designs shall follow modified ISO 23632 to account for the design.
The valve manufacturer shall consider the effect of factors such as assembly loads, actuator weight, actuator orientation, actuating closing and opening loads, and stroke speeds, stem orientation, stem packing protection, and specified external loads when extending a qualification test to a product range.

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Description

This quiz covers the regulations and guidelines for manufacturing valves suitable for oxygen service, including requirements for non-metallic sealing products.