DHI Simplified Water Transfer PHA / PSSR

DHI Simplified Water Transfer PHA / PSSR

Field-ready PHA and pre-startup checklist for smaller water transfer, pump/meter rental, pond skimming, AST/tank transfer, layflat, hard-line piping, valves, bypasses, and simple treatment jobs.

Use note: This is intentionally simpler than the full PHA Node Tree Builder. Use it for smaller jobs where the configuration is mostly source → pump → meter/line/valves → receiving tank or pond, with optional skimmer, bypass, AST, frac tank, or DAF. It does not replace a formally facilitated PHA for complex, high-risk, high-pressure, chemical, H2S, or permit-critical operations.

1. Job Information

2. Simplified Flow / Equipment List

Add only the major items needed to understand routing and risk: source, skimmer/intake, pump, meter, layflat or hard-line, valves/manifolds, bypasses, ASTs, frac tanks, ponds, DAF, and final discharge. Keep this high-level enough for a field PHA but specific enough to verify the valve lineup before startup.

3. Field Flow View

This is a simple routing view. It is not a full P&ID. Use it to confirm that each item has a predecessor/source and a clear outgoing destination or purpose.

4. Connection / Lineup Register

This is the field audit list for what each item receives and where it sends flow. It should match the physical valve lineup, labels, and startup procedure.
#ItemEquipment TypeReceives FromIncoming Stream / RouteMaterialNormal Destination / PurposeStatus

5. Simplified PHA Risk Assessment

Severity: 1 minor nuisance, 2 minor spill/equipment issue, 3 reportable spill/injury/equipment damage, 4 major spill/serious injury/business interruption, 5 life-threatening/catastrophic/environmental major event.
Likelihood: 1 unlikely with controls, 2 possible but uncommon, 3 credible during field work, 4 likely if not controlled, 5 expected/repeated exposure.

6. PSSR / Startup Punch List

Generate this after the flow and PHA rows are complete. Close required-before-startup items before mobilizing or starting flow.
#CategoryItemPSSR Punch ItemRequired Before Startup?OwnerDue DateStatusAction

7. Browser Saves

Browser saves stay on this computer/browser. Export JSON is the formal job record for sharing or archiving.
Saved JobSaved DateItemsRisk RowsActions
Control philosophy: For small transfer jobs, do not overcomplicate the PHA, but do not rely only on someone “watching it” for credible overflow, deadhead, high pressure, or wrong-destination scenarios. Use physical labeling, valve lineup checks, pressure gauges, bypasses/relief paths, level controls, high-level alarms, pump shutdowns, containment, line walks, and clear stop-work criteria where practical.