CEM Certified Energy Manager Audit & Billing 5

Question 1

When auditing a steam system, a CEM uses an ultrasonic leak detector and identifies multiple steam trap failures. Failed-open traps primarily cause:

Accepted Answer

Continuous steam blowthrough and wasted fuel

Answer

A steam trap that fails open allows live steam to pass continuously into the condensate return system, directly wasting fuel.

Question 2

Which energy audit deliverable documents the scope of work, audit boundaries, and data collection methodology agreed upon before fieldwork begins?

Accepted Answer

Audit work plan or scope of work document

Answer

The audit work plan or scope of work document defines boundaries, objectives, and methods before the auditor begins data collection.

Question 3

A CEM is reviewing a compressed air system and finds the system operates at 120 psi but end-use equipment only requires 90 psi. Reducing system pressure to 95 psi would primarily:

Accepted Answer

Reduce compressor energy consumption and leakage losses

Answer

Reducing compressed air system pressure lowers compressor power consumption and reduces air leakage rates, which are pressure-dependent.

Question 4

On a utility bill, the 'fuel adjustment clause' or 'fuel cost adjustment' represents:

Accepted Answer

A variable charge that passes fuel cost fluctuations to customers

Answer

Fuel adjustment clauses allow utilities to pass variable fuel procurement costs directly to customers, adjusting monthly as fuel prices change.

Question 5

During an ASHRAE Level II audit, which of the following is typically NOT included?

Accepted Answer

Detailed engineering calculations for each ECM

Answer

Detailed engineering calculations for each ECM are characteristic of a Level III audit, not Level II, which uses estimates rather than rigorous engineering analysis.

CEM - Certified Energy Manager Practice Test

CEM - Certified Energy Manager Practice Test

CEM Certified Energy Manager Audit & Billing 5