Avoiding Disproportionate Collapse

Single Abstract

343921 - Blast Assessment and Design of Process Safety Critical Structures and Equipment at Petrochemical Facilities

Friday, April 20
11:00 AM - 12:30 PM
Location: 202CD

Control rooms, electrical and remote instrument buildings at petrochemical facilities are typically designed for protecting the interior parts of building. Blast design of walls and structural elements ensure that equipment and occupants are protected for blast effects by mitigating the risk of local and global collapse. However, functionality of equipment during and after an accidental blast event can be critical for safe shutdown of a facility. Loss of power or impairment of critical equipment can result in escalation of blast and fire events. Response of equipment at higher elevations of a process module, directly attached to walls exposed to blast load or in a pile supported elevated building can be critical due to accelerations experienced during a blast event although the equipment may not be subjected to blast overpressures directly.

There are rigorous equipment qualification methods in other industries such as nuclear and power generation industries. However, petrochemical industry has not implemented these methods to date. This study covers several case studies and methodology for assessment of equipment for blast response inside a building or when exposed to blast directly. De-inventory pumps, transformers, cable trays, elevated floors and cabinets are analyzed and qualified for blast response using seismic qualification methods available in the literature. In addition to anchorage of equipment, functionality of equipment is checked.

Findings from the case studies presented in this paper can be utilized to develop guidelines for future projects and considered to assess the equipment qualification requirements. Level of accelerations experienced by buildings, foundations and process structures supporting safety critical elements are the key factors establishing the thresholds for equipment functionality and performance during and after a blast event.

Necip O. Akinci

Principal Consultant
Atkins

Presentation(s):

Send Email for Necip Akinci

Abhimanyu Kumar

Consultant
Atkins

n/a

Presentation(s):

Send Email for Abhimanyu Kumar


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343921 - Blast Assessment and Design of Process Safety Critical Structures and Equipment at Petrochemical Facilities



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