ASME PVHO-2:2016 pdf free download

ASME PVHO-2:2016 pdf free download.Safety Standard for Pressure Vessels for Human Occupancy:In-Service Guidelines.
2-1.1 Window Designer’s Responsibility
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’Vl 10-1 window design certification form) that the window design complies with the requirements of Section 2 of
ASME PVIIO-1.
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 PVFIO-1. The fabricator shall be responsible for completion of all ASME I’VHO-l certification forms applicable to the manufacture, and shall comply with the data retention requirements of
ASMI I’VHO-l.
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 sale 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 replacenwnt in accordance with subsections 24 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 I’VlIO-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 per-formed by a PVHO-1-Qualified Window Fabricator inaccordance with the requirements of MandatoryAppendix lII.
2-2 FACTORS AFFECTING SERVICE LIFE2-2.1 General
Temperature extremes and exposure to UV light,X-rays, and many chemicals are all detrimental to thelongevity of windows.Specific attention should be givento limiting the window’s exposure to detrimental envi-ronmental factors wherever possible.
2-2.2 Physical Abuse Factors
Physical abuse from dropping, impacts with foreignobjects,excessive heat from lights,or scratches fromcleaning with too coarse a cleaning cloth’ are all damag-ing to windows.
Windows should be either removed or adequatelyprotected prior to grit blasting and coating of the cham-ber surface near the window.
2-2.3 Temperature Abuse Factors
2-2.3.1 Heat Sources.External heat sources (e.g-.lightning) shall NOT come in contact with or otherwiseheat the surface of a window in excess of its maximumdesign temperature while pressurized.