Questions - doe-hdbk-1101-20040041

DOE-HDBK-1101-2004

Thermal and chemical stability data, such as flammability limits, flash point, and auto

ignition temperature.

Hazardous effects of inadvertent mixing of different materials.

Information about process technology must include the following.

Block flow diagrams or simplified process flow diagrams.

Process chemistry, such as flow rates, chemical equations, chemistry of intermediates,

utility systems, and exothermic/endothermic reactions.

Maximum intended inventory for all storage tanks, reactors, and other vessels.

Safe upper and lower limits for process parameters, such as flow rates, pressures,

temperatures, levels, phases, and composition, for all modes of operation in all major

piping segments.

Consequences of deviations outside safe operating limits.

Information about process equipment must include the following.

Materials of construction and basis for selection, such as material compatibility or

corrosion resistance.

Electrical area classification, based on flammable materials located near the process.

Relief system design and design basis.

Ventilation system design, including airflow, and psychometric and equipment sizing

calculations.

Design codes and standards.

Material and energy balances for processes. The balances must

show that mass flows and heat transfers sum properly.

Safety systems, such as control interlocks, depressurization, containment and disposal,

and toxic/flammable material detection systems.

Piping and instrumentation diagrams.

Questions

42.

Must all PSI be kept in one place? Can it be spread out in a variety of documents

and locations?

All PSI does not have to be in one document or in one place but should be accessible to

all employees who need it to safely perform their jobs. DOE contractors may choose to

store their PSI in a central location. However, they should ensure that this level of

document control does not hamper worker access to up-to-date PSI. DOE contractors

may consider developing a PSI road map to help workers find necessary information

easily.

43.

PSI is required for ventilation system design, safety systems, and mixing of

materials that could foreseeably occur. What is meant by these terms?