fa عمومى General پژوهشي Research <div style="text-align: justify;"><strong>Background:</strong> The current study aimed at examining Hospital Incident Command System (HICS) on the rate of accidents and disaster preparedness committee and nursing staff of Imam Ali Hospital in Zarand, Iran.<br> <strong>Materials and Methods:</strong> The current semi-experimental study was conducted on the members of Crisis Committee (n=9) and nursing personnel (n=38) selected by fully count model. Data collection tools were two valid and reliable questionnaires: hospital disaster preparedness and the nurses&rsquo; disaster preparedness. Hospital disaster preparedness also included a two-day workshop on hospital incident command system and the nurses&rsquo; disaster preparedness included a one-day workshop on disaster management. Members of the Crisis Committee and nurses were evaluated based on hospital disaster preparedness and nurses&rsquo; disaster preparedness questionnaires before and one month after intervention. SPSS V. 16 was used to analyze data.<br> <strong>Results: </strong>Findings of the current study indicated a major increase in the disaster preparedness of the Crisis Committee (from 88.33 to 130.88) and nurses (from 132.63 to 2077.56) after intervention; in addition, a significant improvement was observed in the nurses group (P=0.000)<br> <strong>Conclusion:</strong> It was concluded that the establishment of HICS and using disaster preparedness program can improve the preparedness of hospital disaster management committee and nursing personnel against disasters.</div> Disaster, Hospital incident command system, Nursing, Disaster committee 101 108 http://hdq.uswr.ac.ir/browse.php?a_code=A-10-273-1&slc_lang=fa&sid=1 Zahra Borhannejad زهرا برهان نژاد borhan5282@gmail.com No Research Center in Emergency & Disaster Health, University of Social Welfare and Rehabilitation Sciences, Tehran, Iran. Sayed Baqer Sadat Madah سید باقر سادات مداح drmaddah@gmail.com Yes Department of Nursing, University of Social Welfare and Rehabilitation Sciences, Tehran, Iran. Hamid Reza Khankeh حمیدرضا خانکه Hamid.khankeh@ki.se 0000-0002-9532-5646 No Department of Nursing, University of Social Welfare and Rehabilitation Sciences, Tehran, Iran. Masoud Falahi Khoshknab مسعود فلاحی خشکناب msflir@yahoo.com 0000-0003-0507-0107 No Department of Nursing, University of Social Welfare and Rehabilitation Sciences, Tehran, Iran. Pourya Rezasoltani پوریا رضاسلطانی p_rsoltani@yahoo.com No Department of Biostatistics, University of Social Welfare and Rehabilitation Sciences, Tehran, Iran. Shoukofhe Ahmadi شکوفه احمدی ahmadi.shokoufeh@gmail.com No Research Center in Emergency & Disaster Health, University of Social Welfare and Rehabilitation Sciences, Tehran, Iran.