15.4 Assets, Work Orders, and Records

Manage service, not just equipment

The WPI Class I outline pairs asset management with equipment maintenance and repair records, including work orders. An asset is a component the utility relies on to deliver service: a motor, blower, generator, analyzer, tank, valve, building system, or control component. Asset management is the coordinated use of technical, operational, and financial information to obtain the required service over the asset's life. It is broader than an inventory and broader than maintenance.

The U.S. Environmental Protection Agency frames water-sector asset management with five questions: What is the current state of the assets? What level of service must be sustained? Which assets are critical? What options provide the lowest life-cycle cost? What long-term funding strategy supports the work? These questions prevent a cheap repair today from automatically outranking a more durable option, and they keep equipment decisions tied to water quality, continuity, compliance, safety, and customer service.

Keep three records distinct

The records connect but are not substitutes. A log entry may report that Blower B-102 developed a new rumble during filter air scour. The asset record identifies B-102 and its service. The work order then controls investigation and correction. The maintenance result returns to the asset history, while the operating log preserves the process condition and shift response.

Build an inventory that supports decisions

A useful asset record starts with a unique, durable identifier and a hierarchy: facility, process, system, equipment, and maintainable component where appropriate. It records location, function, parent asset, manufacturer, model, serial or drawing reference when useful, installation or in-service date, design or duty information, redundancy, condition, criticality, responsible group, approved documents, and parts information. Fields should match the utility's needs; copying every possible field produces incomplete clutter. Security-sensitive details must remain in the authorized system, not in public or casual notes.

Criticality is risk-based. Ask how an asset can fail, how likely that failure is, and what the consequences would be. Consequences can involve worker safety, treatment barriers, water quality, service interruption, environmental release, regulatory duty, cost, and public confidence. A small component can be highly critical if it has no redundancy and its failure disables disinfection. A large motor may be less critical at a particular facility if a tested standby and adequate capacity are immediately available. Do not assign priority from purchase price alone.

Condition and criticality answer different questions. Condition describes present health; criticality describes the importance and consequence of failure. A poor-condition, low-consequence asset may not outrank a fair-condition component with rapidly changing evidence and severe consequence. Together with level of service and life-cycle cost, those facts guide monitoring, preventive tasks, spare strategy, rehabilitation, and replacement.

Make the work order an evidence chain

A high-quality request begins with the correct asset tag and a factual symptom: what was observed, when, by whom, under what load or process state, with what units or alarm, and what immediate action occurred. Avoid unsupported diagnosis. “B-102 vibration displayed 20% above its comparable baseline during the same scour step; air indication declined; standby confirmed available” is more useful than “bad bearing.” The planner can then set priority using consequence and urgency.

Before execution, the order should define scope, required skills and authorization, hazards and energy sources, isolation or permit needs, process contingency, parts and tools, reference documents, and acceptance criteria. During and after work, record actual condition found, cause or failure code when supported, work performed, measurements, parts and quantities, labor, timestamps, people or roles, changes to drawings or settings, test results, return-to-service authorization, and follow-up. Do not use a guessed root cause merely to fill a required field.

Work-order lifecycle

1. Identify: link a clear observation to the correct asset and process context.
2. Screen: address immediate safety or treatment needs and remove duplicates.
3. Prioritize: combine urgency, criticality, redundancy, and failure trend.
4. Plan and schedule: arrange authorization, isolation, process coverage, people, parts, and acceptance criteria.
5. Execute and document: preserve what was actually found and changed.
6. Verify and close: test the intended function, confirm process performance, and assign follow-up.
7. Analyze: use reliable history to find repeat failures, weak task intervals, spare demand, and renewal needs.

Scenario: stop treating repeat trips as separate events

A motor trips three times in two months. Each shift reset it under an allowed operating procedure and wrote a different nickname for the unit. If the work orders are not linked to one asset, the repeat pattern may remain invisible. The operator should use the formal tag, record displayed trip information and operating context, note resets and consequences, and link the new request to prior work. Maintenance may then compare findings, while asset management evaluates whether repeated repair, operating change, rehabilitation, or replacement best sustains service.

Closure quality matters. “Repaired” does not say what failed, what changed, or whether performance recovered. Good closure records the actual finding and acceptance evidence without deleting the original symptom. Corrections should remain auditable under the utility's record rules. Metrics such as repeat work and overdue critical tasks can reveal risk, but no universal target replaces trustworthy records. For the WPI exam, remember the chain: identify the asset, document the condition, prioritize by service risk, control the work, verify return, and feed the history back into the asset plan.