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ASME PVHO-2-2016 pdf free

ASME PVHO-2-2016 pdf free.Safety Standard for Pressure Vessels for Human Occupancy:In-Service Guidelines.
It is the window designer’s responsibility to determine the window design requirements. The window designer shall define manufacturing tolerances and shall certify (by completing the applicable ASME l’VllO-l window design certification form) that the window design complies with the requirements of Section 2 of ASME l’VHO-l.
2-1.2 Window Fabricator’s Responsibility
The window fabricator shall manufacture the window in accordance with the designer’s drawings and specifications and ASME l’VHO-l. The fabricator shall be responsible for completion of all ASME PVHO-l certification forms applicable to the manufacture, and shall comply with the data retention requirements of
2-1.3 Window User’s Responsibility
The window user shall provide the designer with information regarding the service conditions that the window may encounter during its service life. The user shall protect the window from service life hazards, and ensure that the window is used within its design limitations, It is the user, and not the designer or fabricator, who is responsible for determining the safe service life in accordance with the technical criteria and guidelines herein. The user is responsible for retaining all documentation for each window and shall establish a program of periodic window inspection to determine the need for repair or replacement in accordance with subsections 2-4 through 2-6.
2-1.4 QualIty Assurance
The specific rules governing the window fabricator quality program during original window manufacture are detailed in ASME l’VllO-l. Quality assurance of the window in-service is no less important. The user is responsible for
(a) retaining all original forms
(b) implementing a formal in-service window inspection program
(c) retaining all maintenance inspection forms and all window repair forms, as applicable, throughout each window’s service life.
Repair of severely damaged windows shall be performed by a PVHO-1–Qualified Window Fabricator in accordance with the requirements of Mandatory Appendix III,
2-2.1 General
lemperature extremes and exposure to UV light, X-rays, and many chemicals are all detrimental to the longevity of windows. Specific attention should be given to limiting the window’s exposure to detrimental enviroiimcntal factors wherever possible.
2-2.2 Physical Abuse Factors
Physical abuse from dropping, impacts with foreign objects, excessive heat from lights, or scratches from cleaning with too coarse a cleaning cloth’ are all damaging to windows.
Windows should be either removed or adequately protected prior to grit blasting and coating of the chamber surface near the window.
2-2.3 Temperature Abuse Factors Heat Sources. External heat sources (e.g., (:
lightning) shall NOT come in contact with or otherwise heat the surface of a window in excess of its maximum design temperature while pressurized.
Under no circumstances, including storage, should an acrylic window be exposed to temperatures in excess of 150F (6OC).
2-2.3.2 Improper Operation of Lighting Equipment. Where applicable, light pipes shall not be operated with lightbulbs of a wattage greater than the rated capacity of the lighting system, faulty temperature sensors, or an inoperative or disabled cooling fan. Under no circumstances shall the surface of the acrylic, due to the use of a lighting system, be permitted to exceed the window’s maximum temperature rating.ASME PVHO-2 pdf free download.

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