PROCESS SAFETY PROGRESS

SUMMER 1999 , VOL. 18, NO 2
Dennis C. Hendershot.......................................................................................... S2

Call for Papers - 34th Annual Loss Prevention Symposium ......................84
Process Safety Update....................................................................................S5

FEATURE ARTICLES

Emergency Relief Adequacy for Acrylic Polymerization Processes
A.S. Balchan, D.A. PaquetJr., andJ.A. Klien.................................................... 71

Safety Performance in Ammonia Plants: Survey VI
Gerald P. Williams.............................................................................................J8

Experiences with Heavy Fuel-Oil Firing in a Steam Reformer
Catela Pequeno and i •Manfred Severin.............................................................. .,82

Using Constant Slip Ratios to Model Non-Flashing (Frozen) Two-Phase
Flow Through Nozzles
Scott C.Jamerson and Harold G. Fisher.............................................................89

Experiments on the Propagation of Vented Dust Explosions to Connected
Equipment
John V. Valilths, Robert G. Zalosh and Francesco Tamanini ...........................99

Pressure Relief Valve Piping Failures and Fire: Ammonia Synthesis Loop
PeslerE. Sutherland, Michael Ho/man and Don Hansen................................ 107

Batch Purge Caused by Confusing Control System Displays
D.C. Hendershot and G.L. Keeports............................................................... 113

Why DIERS Technology Should he Used in Risk Assessment: Call for a 1999
Worldwide Benchmarking Survey on Various Risk Reduction Methcxis Used
John Noronha ............................................................................. .113

Risk Analysis: An Investment in (engineering
Anthony E.P. Broa'n .....................................................................................121

Instructions to Authors............:.................................................Inside Backcover