The Experts below are selected from a list of 5547 Experts worldwide ranked by ideXlab platform

Nakae Shozo - One of the best experts on this subject based on the ideXlab platform.

  • automatic train control device Pipe Body laying method for monorail beam and automatic train control device Pipe Body laying block therefor
    1997
    Co-Authors: Ikeda Mikitomo, Nakae Shozo
    Abstract:

    PROBLEM TO BE SOLVED: To provide a Pipe-Body laying method by which an ATC Pipe Body can be supported without requiring repair for a long period of time, and a Pipe-Body laying block capable of being used suitably for the method. SOLUTION: A large number of nonmagnetic blocks 21, 22 that have been previously manufactured at a factory under quality control are arranged in series inside a recessed groove 16 that has been formed in the shoulder part of a straddled monorail column 10, and a seal is formed between the jointing parts thereof, so that the joining between the nonmagnetic blocks 21 and 22, and the joining of the nonmagnetic blocks 21, 22 to the recessed groove 16 are carried out by filling an urethane resin addhesive into the sealing space formed therein through the seal, and then an ATC Pipe Body 35 (not shown) is fitted to the Pipe-Body laying groove by means of Pipe-Body connectors.

Jan, Miraj Muhammad - One of the best experts on this subject based on the ideXlab platform.

  • Root cause analysis (RCA) of fractured ASTM A53 carbon steel Pipe at oil & gas company
    The Author(s). Published by Elsevier Ltd., 2016
    Co-Authors: Zareen N., Mukhtar Anique, Kazi S., Jalil Amena, Ahmed Zaheer, Jan, Miraj Muhammad
    Abstract:

    AbstractIncident involving failures of ASTM A53 carbon steel (CS) Pipe, connected to pressure safety valve (PSV) and carrying raw gas has caused serious supply disruption. This study was performed to identify the most probable cause of the Pipe failure. It was conducted by reviewing the existing design, construction data and Pipe material analysis using non-destructive techniques such as VT, PT, MT and UT along with metallographic, hardness and microscopic analysis. The investigation revealed that excessive material loss has occurred in both failure and its adjacent regions due to abrasive grinding, resulting in the formation of a through thickness flaw. These grindings were performed to accommodate the pre-installed piping spool to avoid alteration in the Pipe position. RCA demonstrated that this rapid thinning of the steel Pipe Body later led to its failure. Metallurgical study using photomicrograph shows that the morphology of the steel material was consistent and did not show any evidence of internal corrosion or micro fractures. Further damage to the surface of already excessively reduced thickness occurred due to nominal Pipe vibration and atmospheric effect during service. The research work described in the paper has a significant meaning to recognize the root cause of such failures in CS Pipes and through given recommendations to eliminate future such happenings

Miraj Muhammad Jan - One of the best experts on this subject based on the ideXlab platform.

  • root cause analysis rca of fractured astm a53 carbon steel Pipe at oil gas company
    Case Studies in Engineering Failure Analysis, 2016
    Co-Authors: M A Khattak, N Zareen, Anique Mukhtar, Suhail Kazi, Amena Jalil, Zaheer Ahmed, Miraj Muhammad Jan
    Abstract:

    Incident involving failures of ASTM A53 carbon steel (CS) Pipe, connected to pressure safety valve (PSV) and carrying raw gas has caused serious supply disruption. This study was performed to identify the most probable cause of the Pipe failure. It was conducted by reviewing the existing design, construction data and Pipe material analysis using non-destructive techniques such as VT, PT, MT and UT along with metallographic, hardness and microscopic analysis. The investigation revealed that excessive material loss has occurred in both failure and its adjacent regions due to abrasive grinding, resulting in the formation of a through thickness flaw. These grindings were performed to accommodate the pre-installed piping spool to avoid alteration in the Pipe position. RCA demonstrated that this rapid thinning of the steel Pipe Body later led to its failure. Metallurgical study using photomicrograph shows that the morphology of the steel material was consistent and did not show any evidence of internal corrosion or micro fractures. Further damage to the surface of already excessively reduced thickness occurred due to nominal Pipe vibration and atmospheric effect during service. The research work described in the paper has a significant meaning to recognize the root cause of such failures in CS Pipes and through given recommendations to eliminate future such happenings.

Ikeda Mikitomo - One of the best experts on this subject based on the ideXlab platform.

  • automatic train control device Pipe Body laying method for monorail beam and automatic train control device Pipe Body laying block therefor
    1997
    Co-Authors: Ikeda Mikitomo, Nakae Shozo
    Abstract:

    PROBLEM TO BE SOLVED: To provide a Pipe-Body laying method by which an ATC Pipe Body can be supported without requiring repair for a long period of time, and a Pipe-Body laying block capable of being used suitably for the method. SOLUTION: A large number of nonmagnetic blocks 21, 22 that have been previously manufactured at a factory under quality control are arranged in series inside a recessed groove 16 that has been formed in the shoulder part of a straddled monorail column 10, and a seal is formed between the jointing parts thereof, so that the joining between the nonmagnetic blocks 21 and 22, and the joining of the nonmagnetic blocks 21, 22 to the recessed groove 16 are carried out by filling an urethane resin addhesive into the sealing space formed therein through the seal, and then an ATC Pipe Body 35 (not shown) is fitted to the Pipe-Body laying groove by means of Pipe-Body connectors.

Zareen N. - One of the best experts on this subject based on the ideXlab platform.

  • Root cause analysis (RCA) of fractured ASTM A53 carbon steel Pipe at oil & gas company
    The Author(s). Published by Elsevier Ltd., 2016
    Co-Authors: Zareen N., Mukhtar Anique, Kazi S., Jalil Amena, Ahmed Zaheer, Jan, Miraj Muhammad
    Abstract:

    AbstractIncident involving failures of ASTM A53 carbon steel (CS) Pipe, connected to pressure safety valve (PSV) and carrying raw gas has caused serious supply disruption. This study was performed to identify the most probable cause of the Pipe failure. It was conducted by reviewing the existing design, construction data and Pipe material analysis using non-destructive techniques such as VT, PT, MT and UT along with metallographic, hardness and microscopic analysis. The investigation revealed that excessive material loss has occurred in both failure and its adjacent regions due to abrasive grinding, resulting in the formation of a through thickness flaw. These grindings were performed to accommodate the pre-installed piping spool to avoid alteration in the Pipe position. RCA demonstrated that this rapid thinning of the steel Pipe Body later led to its failure. Metallurgical study using photomicrograph shows that the morphology of the steel material was consistent and did not show any evidence of internal corrosion or micro fractures. Further damage to the surface of already excessively reduced thickness occurred due to nominal Pipe vibration and atmospheric effect during service. The research work described in the paper has a significant meaning to recognize the root cause of such failures in CS Pipes and through given recommendations to eliminate future such happenings