List of Three Violations in the Chemical Industry: Production and Maintenance

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104. During cleaning and maintenance inside containers, in case of dangerous situations, there are no emergency evacuation facilities or measures available.
105. Hot work is carried out without a supervisor; the supervisor is a newly hired employee, or hot work is performed in violation of regulations.
106. Overloading during lifting operations.
107. Tools or lifted objects are not properly secured.
108. Protective equipment (e.g., safety helmets, safety belts) is not provided or worn.
109. There are no warning signs, or existing signs have become illegible (e.g., warnings against electric shock or falling objects).
110. During maintenance, personnel stand on suspended pipelines, small-diameter plastic pipes, or glass-lined pipes, or use unsafe means of ascent.
111. Damaged cables of welding machines or power tools lead to electrical leakage; neutral wires are damaged or improperly connected.
112. Personnel blindly enter sewage tanks, deep ditches, or pits to perform work.
113. In winter, pipe racks become icy and slippery, yet no anti-slip measures are taken.
114. Welders from installation companies lack welding certificates; maintenance workers have not received relevant training.
115. Work is performed directly on rooftops made of fragile materials such as asbestos sheets or tar paper.
116. During work at heights, no preventive measures are taken for concurrent operations.
117. During work at heights, the neutral wire of the welding machine is not connected to the welding point.
118. Working in areas with unpleasant odors or potential toxic gases without wearing gas masks.
119. When making repairs or cutting holes in walls at heights, no safety fences or nets are installed.
120. Hazardous materials removed during cleanup fall from upper levels to lower levels.
121. Lifting machinery is used to transport people.
122. Insufficient lighting during night-time operations.
123. Work at heights outdoors continues despite strong winds of force 6 or above, or other adverse weather conditions.
124. When working inside a reactor, there are fewer than two supervisors outside the reactor.
125. During maintenance inside a reactor, power is not cut off, and no sign reading “Maintenance in progress – Do not switch on” is posted.
126. Prior to entering the reactor, it is not thoroughly cleaned.
127. Before entering the reactor, concentrations of flammable gases, oxygen, and toxic gases (CO, H2S) are not analyzed.
128. Before entering the reactor, material pipelines such as those carrying raw materials, solvents, steam, water, and nitrogen are not properly isolated.
129. During maintenance, samples are not regularly taken from inside the reactor for analysis.
130. No sign reading “Personnel inside” is displayed in a conspicuous location outside the reactor.
131. The “double-check system” is not implemented when entering the reactor.
132. Lighting inside the reactor does not meet safety voltage standards: voltage exceeds 24V in dry conditions and 12V in wet conditions.
133. After maintenance, the reactor is put into operation without inspection or removal of debris.
134. Personnel work inside the reactor for extended periods without rotation.
135. During maintenance, necessary ventilation facilities are absent inside the reactor.
136. Welding is performed on the outer or inner surfaces of glass-lined tanks.
137. No soft padding is laid before entering glass-lined tanks or vessels.
138. Glass-lined tanks are subjected to rapid heating or cooling.
139. While using glass-lined tanks, bolts or clamps from the tank openings or manholes fall into the tank.
140. When using glass-lined, stainless steel, or carbon steel tanks, acid solutions enter the jacket surrounding the tank.
141. Materials selected have not been evaluated regarding temperature resistance, pH tolerance, or corrosion solubility; in pressurized environments, no special pressure testing has been conducted.
142. After maintenance, all areas inside and around the reactor are not thoroughly inspected and cleared before trial operation begins.
143. After maintenance, relevant matters are not fully communicated; changes are implemented without approval; personnel take over duties without adequate training or understanding.
144. Production starts immediately after maintenance, without confirming proper operation first