DHI Water Transfer PHA Builder

Operating philosophy: Keep the PHA focused on flow, pressure, containment, routing, monitoring, remote control, freezing/heat introduction, and source/destination capacity. This tool is not intended for chemical treatment, process vessels, H₂S process design, or unrelated PSM topics.

Saved PHA Library

Every saved PHA is stored in this browser and can be searched or filtered by customer and job name.

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Import Library

Job Name	Customer / Site	PHA Date	Ops Lead	Rows	High/Crit	Last Saved	Actions

1. Job Information

Job Name

Customer / Site

PHA Date

Operations Lead

Target Flow (BPD)

Transfer Line Size

Approx. Transfer Distance

Route / Scope Notes

2. Water Transfer Setup — Brief Questionnaire

Answer these questions. The PHA nodes and questions below will be created automatically.

A. Source

Source Type

Number of Suction Intakes

Intake Screen / Strainer

Source Level Monitoring

Low Source Level Alarm

Source Access / Bank Risk

B. Primary Pump Station

Primary Duty Pumps Installed

Backup Pumps Installed

Pump Bypass Arrangement

Check Valves on Pump Discharge

Pump Surveillance

SCADA Communications

Remote Pump Control

Automatic Pressure Trips

Response if Any Pump Trips

Pressure Profile Monitoring

Backup Pump Start on Duty-Pump Failure

C. Transfer Route

Intermediate Booster Pumps

Booster Pump Bypass Arrangement

Intermediate Isolation Valves

Intermediate Flow Meters

Heat Injection Manifolds

Heat Manifold Temperature Monitoring

Shielded Hose Road Crossings

Low-Profile Structured Road Crossings

Main Transfer Line Type

Line Leak Surveillance

Automatic Response to Suspected Line Rupture

D. Destination

Destination Type

Final Flow Meter

Destination Level Monitoring

High Level Response

Multiple Destination Tanks?

Tank Level Sensors

Destination Freeboard Confirmed Before Startup?

E. Operating Limits

Maximum Allowed Operating Pressure (psi)

Lowest-Rated Hose / Component WP (psi)

Maximum Elevation Head Above Lowest Hose Point (ft)

Fluid Specific Gravity

Minimum Suction Pressure / Level Criterion

Static-Line Backflow Protection

Cold Weather Operation?

Pigging Required?

3. Generated Transfer Configuration

4. Water Transfer PHA

Only questions applicable to the configured transfer system are generated. Fill in safeguards and actions only where the existing arrangement is not adequate.

Node	Deviation / Hazard	PHA Question	Typical Causes	Potential Consequences	Existing / Required Safeguards	S	L	Risk	Action / Recommendation	Owner	Status

5. PSSR / Pre-Startup Verification

#	Category	Verification	Required Before Start	Owner	Status

6. Sign-Off

Operations Lead

Field Supervisor

HSE / Safety

Customer Representative (if required)