ERW CommandGas

THE INTELLIGENT GAS LEADERSHIP PROGRAMME

Carry the promise through.

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15-Session Programme · 25 Minutes Per Day · Free · For leaders in Nigeria’s gas and industrial energy businesses
WEEK 2 OF 3 · SUPPLY, LNG, INDUSTRIAL ENERGY, CNG AND LPG · SESSIONS 6–10 · WORK AT YOUR OWN PACE
This week’s assessments: Pop Quiz 2 — Nominations, Interfaces and Energy Claims after Session 8 · Practice Exam 2 — Supply, LNG, Industrial Energy, CNG and LPG after Session 10
By Session 15: you hold a signed 90-Day AI Leadership Plan for your own company · Every assignment marked against a published rubric · Pass mark 70
Chapters 6 and 7 · Processing and SupplySESSION 6
Pipeline Nominations and Delivery
Session 6 of 15 · 25-Minute Module

Why This Matters

A nomination is where the customer promise meets the network on a particular day, and a balance is where the company later proves what happened. Both are easy to blur. A forecast gets treated as a feasible plan, a profitable allocation gets treated as a deliverable one, and an unexplained residual gets called a loss. Today you separate the request from what the system can support and from what management chooses to allocate, and you draw a boundary around the quantity so a residual becomes an investigation, not a verdict. If your business does not move gas by pipeline, apply this to the nearest equivalent allocation and balance in your own operation.

25-Minute Module
5:00 – 10:00
Make the objective explicit and return infeasibility honestly
  • An optimiser chooses the best plan against an objective, so ask which one management has actually chosen: minimising accepted shortfall, maximising contribution, preserving a contractual priority or another approved objective.
  • Separate hard constraints (equipment and permission conditions, in the feasibility check) from economic preferences. Commercial priorities need their accepted contractual treatment; as Session 3 established, the signed clause governs.
  • THE DOCTRINE

    A solver should not silently trade a necessary technical condition for higher margin. A penalty term chosen by an analyst should not turn an obligation into something the business can ignore whenever another sale looks attractive.

  • Where no allocation satisfies the accepted conditions, the system should show the conflict and possible authorised revisions. A request to change a customer window is a proposed business action, not proof the plan became feasible.
If a plan never shows a conflict, ask where the conflict went.
16:00 – 21:00
The balance boundary and a residual that is not a verdict
  • Choose the boundary, period and quantity basis before entering figures. Do not add quantities with different reference conditions, calorific bases or states of acceptance.
  • Appendix B item (assumed Sm3)QuantityRecord needed
    Opening inventory10,000Accepted opening record
    Receipts50,000Meter or transaction references
    Deliveries45,000Accepted delivery records
    Own use2,000Approved measurement or estimation basis
    Other accounted outflows500Separate disposition
    Expected closing12,500Opening plus receipts less outflows
    Observed closing12,000Closing measurement and acceptance
    Residual500Expected less observed
  • Make the sign convention explicit: here a positive residual means observed closing is below calculated. The 500 is an investigation item. It does not identify theft, leakage, measurement error or a commercial adjustment. Keep a second record for evidence status: which inputs are measured, calculated, estimated, provisional or disputed, and who accepted them.
  • THE DOCTRINE

    A residual within a calculated uncertainty range still needs the agreed reconciliation treatment. A residual outside it needs investigation, not an automatically assigned cause.

  • In the book's separate simplified comparison, two independent quantities with standard uncertainties of 1,000 and 500 units and unit sensitivity coefficients give a combined standard uncertainty of their difference of about 1,118 units, the square root of 1,000 squared plus 500 squared (JCGM 100:2008, section 5). Correlated inputs need covariance treatment. It is not a complete assessment of the balance above; metrology sets the assessment and decision rule, not an analyst's universal percentage.
Ask what sign the residual carries before anyone tells you what it means.
Key Terms

Hard constraint

An equipment, permission or technical condition that belongs in the feasibility check and may not be traded for margin by an optimiser.

Residual (balance)

Expected less observed closing quantity on a stated boundary, basis and sign convention. An investigation item, not proof of theft, leakage, loss or recoverable product.

Self-Check — Before You Submit
1. In the book's worked allocation, supply falls to 60,000 against assumed minimums of 40,000 (A) and 30,000 (B). The tool proposes 40,000 to A and 20,000 to B. How should the pack describe this?
  • A. As a feasible plan that resolves the conflict
  • B. As a selected 10,000-unit shortfall against B's minimum that needs an authorised decision
  • C. As proof that B's contract is unenforceable
  • D. As an optimisation error to be retrained
B. As a selected 10,000-unit shortfall against B's minimum that needs an authorised decision — The minimums total 70,000, so 60,000 cannot meet them; the allocation selected a shortfall. Calling it feasible is the tempting error: it hides the decision management must own.
2. A fictional balance shows a 500-unit positive residual. The site manager proposes reporting it as theft. What should you do?
  • A. Approve the theft report, because the residual is positive
  • B. Write the residual off as an accepted adjustment
  • C. Treat it as an investigation item: check cut-offs, conditions, duplication and own use, and route instrument concerns to metrology
  • D. Let the anomaly model correct the closing inventory
C. Treat it as an investigation item: check cut-offs, conditions, duplication and own use, and route instrument concerns to metrology — A residual does not identify theft, leakage or a commercial adjustment. Writing it off is the other trap: the ledger looks reconciled while the evidence disappears.
3. Two independent quantities have standard uncertainties of 1,000 and 500 units with unit sensitivity coefficients. What does the book's JCGM 100:2008 illustration give for the combined standard uncertainty of their difference?
  • A. About 1,118 units
  • B. 1,500 units
  • C. 500 units
  • D. A universal percentage set by the analyst
A. About 1,118 units — The square root of 1,000 squared plus 500 squared is about 1,118. Adding them to 1,500 is the tempting mistake for independent inputs.

Today’s Assignment

Write Section 6 of your plan: request, feasibility and allocation separated for your Session 1 decision, the objective made explicit and the balance boundary defined.
  • Separate the three stages in your decision: who forecasts the request, who performs the accepted feasibility check and who allocates, with the evidence each needs at the cut-off.
  • State the optimisation objective your company has actually chosen, which conditions are hard constraints, and how an infeasible case would be shown and escalated.
  • Define the balance boundary, period, quantity basis and sign convention relevant to the decision, using the Appendix B template, with an evidence-status record for each input.
  • State how a residual would be investigated without manufacturing certainty: the checks, who reviews instrument concerns, who reviews physical concerns and who may authorise a correction.
  • The honest part: where your business lets delivered quantity stand in for demand, or closes a residual by adjustment. Without pipelines, use your nearest equivalent allocation and balance. If no AI is in use yet, that is normal. Aim for 400 to 900 words.
YOUR 90-DAY PLAN

Section 6 — Request, feasibility and allocation separated, the objective explicit and the balance boundary defined.

How this is marked — the rubric
Separates request, feasibility and allocation with named owners by role and the evidence each needs25
States the objective actually chosen, the hard constraints and how infeasibility is shown25
Defines boundary, period, quantity basis, sign convention and evidence status25
Describes a residual investigation that assigns no cause in advance, with an honest example25
Total · pass mark 70100
Submitting session 6
Write your answer in Word or Google Docs. The first line must read Session: 6, or the submission is refused. Upload the Word file (.docx), or switch to the Google Doc tab and paste your document’s share link.
Marked against the rubric above and returned as a written letter, saved to your progress page. Do not submit until you have passed the self-check above.
Capabilities Covered
Nomination disciplineExplicit optimisation objectivesHonest infeasibilityBalance boundariesResidual investigation
Tick it once you have submitted.Next: Session 7 →
Chapters 8 and 9 · LNG and Industrial EnergySESSION 7
LNG Operating Decisions and Interfaces
Session 7 of 15 · 25-Minute Module

Why This Matters

A delivery can fail without any single department failing. Every team reports progress while the combined promise breaks at an interface: a transfer arrives late, a receiving facility is unavailable, a customer's plant cannot use the gas delivered. Today you map where custody, operational control and commercial responsibility change hands in your decision, define the service the customer can actually use, and keep the supplier's value and the customer's value in separate columns. If your company does not handle LNG, apply the LNG chapter to the nearest transfer interface you depend on. If you are an industrial energy user, read the customer chapter from your own side of the same service.

25-Minute Module
5:00 – 10:00
Inventory is a conditioned quantity
  • Total reported stock may differ from stock available for a proposed movement: record basis, condition, storage, planned transfers, equipment readiness and time windows.
  • THE DOCTRINE

    A forecast of storage pressure or vapour generation is advisory evidence. The permitted management of boil-off gas and pressure belongs to the engineered system and approved arrangements.

  • The book's delayed-transfer advisory combines an arrival forecast, inventory scenarios and a constrained schedule comparison. A language-model summary can explain alternatives but should not create the engineering feasibility conclusion, and stale inventory or equipment status returns an unavailable result.
  • An arrival interval described as 80% coverage should be examined against later accepted outcomes at the relevant horizon. Evaluate the inventory model separately: a good arrival prediction does not compensate for an unreliable inventory basis.
When someone quotes the stock figure, ask how much of it the next movement can actually use.
15:00 – 20:00
A usable service, and whose value is being protected
  • An industrial customer may use gas for heat, power, drying or another process; quantity alone does not establish service. Define the service jointly: delivery point, quantity basis, windows, receiving restrictions, cut-offs and contingency, recording which conditions belong to supplier and customer.
  • THE DOCTRINE

    A supplier forecast should not infer safe customer-equipment operation.

  • Forecast the request, not the constraint: separate low deliveries caused by low demand from those caused by supplier shortage, credit restriction or unavailable receiving capability. Commitments pass through the actual commercial authority.
  • IN THE PHYSICAL SUPPLY · THE WORKED CASE
    • Physical supply. In the book's assumed case an intervention protects 10,000 accepted standard cubic metres at supplier contribution of ₦150 per unit: ₦1.5 million protected, less ₦600,000 incremental cost, ₦900,000 simplified supplier net value. If it merely advances a delivery that could have been accepted the next day, permanently protected contribution may be zero.
    AT THE CUSTOMER PROMISE · THE PARALLEL
    • Customer promise. The customer separately estimates that continuity protects ₦8 million of its production contribution. That explains the service's importance but is not ₦8 million of supplier profit. An agreed incremental fee would enter the supplier calculation with its costs and acceptance conditions; a retention claim needs evidence and is not cash realised by one event.
  • For repeated underprediction, the best fix may be an information-sharing arrangement rather than another model.
If management approves a response for relationship reasons, write that down. Inflating the money makes the next evaluation less useful.
Key Terms

Conditioned quantity

Inventory stated with its basis, condition, storage, equipment readiness and time window, so that stock available for a movement is not confused with total reported stock.

Customer delivery review

The Appendix C trace from contracted request through allocation, release, receipt, acceptance, invoice and collection, locating the unresolved interface and its next action.

Self-Check — Before You Submit
1. In the book's LNG example, all 100 delayed tonnes can be rescheduled without losing contribution. A manager still claims ₦4.2 million protected by the ₦2.5 million alternative movement. What is wrong?
  • A. Nothing; protected contribution is always the recovered tonnes times contribution
  • B. The contribution would be counted as lost and then counted again when the rescheduled sale happens
  • C. The figure should be ₦6 million
  • D. The alternative movement cost should be ignored
B. The contribution would be counted as lost and then counted again when the rescheduled sale happens — If the sale is only rescheduled, no contribution is permanently lost, so the lost-sales case cannot justify the movement. ₦6 million is the tempting error: it applies only to a permanent loss.
2. A supplier's continuity intervention protects ₦900,000 of simplified supplier net value; the customer says continuity protected ₦8 million of its production contribution. What goes in the supplier's financial case?
  • A. ₦8.9 million
  • B. ₦8 million
  • C. ₦900,000, with the customer's ₦8 million kept as a separate consequence unless an agreed fee brings part of it into the supplier calculation
  • D. Nothing, because customer value is irrelevant
C. ₦900,000, with the customer's ₦8 million kept as a separate consequence unless an agreed fee brings part of it into the supplier calculation — The customer's number explains why the service matters but is not supplier profit. Adding the two is the tempting error; dismissing customer value is also wrong.
3. An Appendix C review shows 10,000 units requested and 8,500 commercially accepted. The commercial director wants to record 1,500 units of lost revenue. What should the review do first?
  • A. Determine whether the quantity was deferred, cancelled, substituted or supplied later
  • B. Record the loss, since the request was contracted
  • C. Ask an AI assistant to decide which party breached the contract
  • D. Write the outstanding payment off as bad debt
A. Determine whether the quantity was deferred, cancelled, substituted or supplied later — Unaccepted request is not automatically lost revenue. Asking an AI assistant to settle responsibility is the attractive shortcut, but a generated summary should not settle a disputed contractual interpretation.

Today’s Assignment

Write Section 7 of your plan: the interfaces in your Session 1 decision, the usable service defined jointly and whose value is being protected.
  • Map the interfaces in your decision and, at each, state where custody, operational control and commercial responsibility change, naming the controlling party by role.
  • Define the usable service with the counterpart: delivery point, quantity basis, windows, receiving restrictions, cut-offs and contingency, and which conditions belong to your company and which to them.
  • State whose value the decision protects, keeping supplier and customer consequences in separate columns and showing any part that is rescheduled rather than lost.
  • Complete an Appendix C review for one customer or counterpart in your business, from request to collection, with each exception's impact, evidence owner and deadline.
  • The honest part: where your company has counted a customer's loss as its own benefit, or a rescheduled sale twice. If you are an industrial energy user, write from your side of the same service. If no AI is in use yet, that is normal; work from the decision in front of you. Aim for 400 to 900 words.
YOUR 90-DAY PLAN

Section 7 — The interfaces, the usable service defined jointly and whose value is being protected.

How this is marked — the rubric
Maps the interfaces with custody, operational control and commercial responsibility named at each25
Defines the usable service jointly, assigning each condition to its owner25
Keeps supplier and customer value separate and counts no contribution twice25
Completes an Appendix C review with exceptions, owners and deadlines, and an honest example25
Total · pass mark 70100
Submitting session 7
Write your answer in Word or Google Docs. The first line must read Session: 7, or the submission is refused. Upload the Word file (.docx), or switch to the Google Doc tab and paste your document’s share link.
Marked against the rubric above and returned as a written letter, saved to your progress page. Do not submit until you have passed the self-check above.
Capabilities Covered
Interface mappingConditioned inventoryJoint service definitionSeparating supplier and customer valueCustomer delivery review
Tick it once you have submitted.Next: Session 8 →
Chapter 10 · LNG and Industrial EnergySESSION 8
Utilities, Energy Use and Operating Losses
Session 8 of 15 · 25-Minute Module

Why This Matters

Energy and loss claims make it easy to take credit that has not been earned. A lower electricity bill arrives in a month when throughput also fell. A flare report improves and somebody calls it recovered gas. Today you learn to define the operating result a saving is measured against, build a baseline that explains the difference, and reconstruct one claim until you can say which part an analytical capability actually caused. Choose an energy, utility, loss or flaring claim that bears on your Session 1 decision, or one your company has already made. A smaller, defensible number protects capital for applications that genuinely change your economics.

25-Minute Module
5:00 – 10:00
A baseline that explains the difference
  • A baseline is the defined comparison against which a saving is measured. A simple one may relate energy consumption to throughput and operating hours within a stable regime; more complex conditions may need a different model. State the variables, validation boundary and missing regimes.
  • THE DOCTRINE

    A baseline is a defined comparison, not a number selected because it makes the result attractive.

  • Keep simultaneous changes visible. Equipment repair, operating practice, production mix and tariff can all change observed expenditure. A before-and-after difference during a maintenance month is not sufficient evidence of an AI effect.
  • An anomaly model can identify departures from expected consumption, but the departure is not automatically avoidable waste. A competent owner investigates the mechanism: measurement, legitimate process demand, changed operation or equipment condition.
List everything else that changed that month. If the list is long, the attribution is short.
16:00 – 21:00
Flaring, methane and recovered gas are different claims
  • The World Bank's Zero Routine Flaring by 2030 initiative distinguishes routine flaring from safety and other non-routine flaring (World Bank, Zero Routine Flaring by 2030). The book treats it as a commitment framework, not proof of an individual facility's outcome. Preserve accepted physical events and their classifications.
  • A lower estimated flare quantity does not automatically establish reduced methane emissions, recovered saleable gas or collected revenue. Each claim needs its own measurement basis and physical mechanism.
  • IN THE PHYSICAL SUPPLY · THE WORKED CASE
    • Physical supply. A fictional processing plant's advisory helps link a constrained asset to a feasible response. The plant records the observed event, the approved action and the accepted physical outcome, each with its own measurement basis.
    AT THE CUSTOMER PROMISE · THE PARALLEL
    • Customer promise. The same plant's finance team will not report recovered saleable gas or collected revenue from a lower flare estimate; each claim needs its own measurement basis and physical mechanism. Environmental and commercial evidence stay connected without collapsing into one unverified benefit. Same loop, two separate claims.
  • THE DOCTRINE

    A report-preparation assistant should be evaluated as a reporting capability, rather than credited with an environmental outcome it did not cause.

When one number is used to support three claims, ask for three measurement bases.
Key Terms

Baseline

A defined comparison stating its variables, validation boundary and missing regimes; not a number chosen because it flatters the result.

Routine flaring

In the World Bank's Zero Routine Flaring by 2030 initiative, flaring distinguished from safety and other non-routine flaring; a commitment framework, not proof of a facility's outcome.

Self-Check — Before You Submit
1. Using the book's assumptions (₦26.4 million monthly baseline, ₦600,000 recurring cost, ₦10 million initial cost), what is simplified payback at a verified 3% reduction?
  • A. About 6.61 months
  • B. About 12.6 months
  • C. About 16.7 months
  • D. About 52.08 months
D. About 52.08 months — 3% gives ₦792,000 gross, ₦192,000 net, and ₦10 million divided by ₦192,000 is about 52.08 months. 6.61 months is the tempting answer because it is the 8% case; 12.6 months ignores the recurring cost.
2. A fictional compression station reports 8% lower electricity consumption in the month an AI advisory went live. Accepted output also fell 8% and a major repair was completed. What should the sponsor do?
  • A. Book the 8% saving to the advisory
  • B. Treat the claim as unestablished: compare against a comparable output, list the simultaneous changes and keep any attribution provisional
  • C. Reject the advisory as worthless
  • D. Ask the vendor to recalculate the baseline until the saving holds
B. Treat the claim as unestablished: compare against a comparable output, list the simultaneous changes and keep any attribution provisional — Lower consumption with equally lower output does not establish efficiency, and a repair month is not sufficient evidence of an AI effect. Rejecting the advisory outright is the opposite error; the evidence is unresolved, not negative. Reshaping the baseline to fit is exactly what a baseline must not be.
3. A plant's estimated flare quantity fell after a reporting assistant was introduced. Which claim does the book allow on that evidence alone?
  • A. Methane emissions fell
  • B. Saleable gas was recovered
  • C. The reporting capability can be evaluated as a reporting capability
  • D. Revenue increased
C. The reporting capability can be evaluated as a reporting capability — Flaring, methane and recovered gas are different claims, each needing its own measurement basis and mechanism. The tempting answer is reduced methane, but a lower flare estimate does not establish it, and a reporting assistant should not be credited with an environmental outcome it did not cause.

Today’s Assignment

Write Section 8 of your plan: a comparable operating result, a baseline that explains the difference and one energy, utility, loss or flaring claim reconstructed.
  • Name the energy, utility, loss or flaring claim that bears on your Session 1 decision, or one your company has already made.
  • Define the comparable operating result: the energy boundary, the useful output and the conditions that must be preserved for the comparison.
  • Define the baseline, its variables and validation boundary, and list every simultaneous change that could explain the difference.
  • Reconstruct the claimed saving as far as your company's records allow, separating quantity effect from price effect, and state which part can reasonably be attributed to an analytical capability and which remains provisional.
  • The honest part: where your business has reported a saving, flare reduction or recovered quantity on weaker evidence than this. If no AI is in use yet, that is normal; reconstruct the claim in the proposal in front of you. Aim for 400 to 900 words.
YOUR 90-DAY PLAN

Section 8 — A comparable operating result, a baseline that explains the difference and one claim reconstructed.

How this is marked — the rubric
Defines the comparable operating result with its energy boundary and useful output25
States a baseline with variables and validation boundary, and lists the simultaneous changes25
Reconstructs the claim from records, separating quantity and price effects25
Separates attributable from provisional benefit and keeps distinct claims distinct, with an honest example25
Total · pass mark 70100
Submitting session 8
Write your answer in Word or Google Docs. The first line must read Session: 8, or the submission is refused. Upload the Word file (.docx), or switch to the Google Doc tab and paste your document’s share link.
Marked against the rubric above and returned as a written letter, saved to your progress page. Do not submit until you have passed the self-check above.
ASSESSMENT NOW OPEN

Pop Quiz 2 — Nominations, Interfaces and Energy Claims opens now. Sit it before you start the next session — it is how you find out whether the doctrine landed, and the practice papers may be resat as often as you like.

5 questions · 10 minutes · covers Sessions 6–8 · pass mark 70
Sit Pop Quiz 2 →Closed book, no notes, and Coach Ritchie switches himself off while you sit it.
Capabilities Covered
Comparable operating resultsBaseline designSavings attributionSeparating environmental claimsBenefit reconstruction
Tick it once you have submitted.Next: Session 9 →
Chapters 11 and 12 · CNG and LPGSESSION 9
CNG Compression and Distribution
Session 9 of 15 · 25-Minute Module

Why This Matters

A CNG business can have spare compression and still be unable to sell another unit, because loading, transport, customer unloading and return form one cycle, and the slowest restriction decides the day. Today you model the complete cycle behind your decision, count capacity once, separate what is uncertain from what is simply not allowed, and name who releases the movement. The same discipline applies to any delivery or transfer cycle: a tanker loop, a cylinder round, a maintenance crew's circuit. If your company does not run CNG, apply this to the cycle in your own business without assuming its evidence or controls transfer from this one.

25-Minute Module
5:00 – 10:00
Count capacity once
  • Nameplate compression, loading capability, transport capacity and receiving capacity are different measures. The completed service is limited by their combined interaction; as Session 3 established, the binding constraint decides where effort pays.
  • Define availability consistently. If observed cycle time already includes downtime, adding a separate downtime factor may count the same restriction twice. If cycle time represents an available unit and planned interruption is separate, the factor may be appropriate. Make the basis clear before comparing options.
  • Long-run average capacity differs from a daily schedule. A fractional number of cycles is useful for an average comparison but impossible on a specific day; dispatch needs actual units, start times, return times and customer windows.
When two availability factors appear in one formula, ask whether they describe the same lost hours.
15:00 – 20:00
Uncertainty, eligibility and release authority
  • An unavailable unit is ineligible until accepted readiness is established; a road-access condition or customer restriction may also be a necessary constraint. Travel and waiting time can be uncertain within an eligible plan. Mixing the two into one confidence score hides what the planner must resolve. Forecast travel or queue uncertainty; check eligibility against accepted records.
  • The shortest route is not necessarily the best service if the arrival conflicts with unloading. Use stable route and customer identities, and keep data permissions clear where location and personnel information are used. A forecast that becomes accurate ten minutes before arrival may help customer communication but be too late for loading allocation.
  • IN THE PHYSICAL SUPPLY · THE WORKED CASE
    • Physical supply. In a fictional CNG distributor, the model may recommend a loading slot or draft a dispatch plan. Release requires the accepted equipment, product, personnel, receiving and commercial checks, and the model never alters the loading procedure, pressure limits or equipment acceptance.
    AT THE CUSTOMER PROMISE · THE PARALLEL
    • Customer promise. The customer's confirmation can expire or change after planning. The record names who checks each dependency and who releases the movement, and preserves a hold state rather than treating the earlier schedule as permanently valid.
  • Do not reward a planner for silently changing a required condition to make the schedule work. Preserve a rejected recommendation with its reason: repeated rejection for customer access may reveal a missing constraint, not a training problem.
One unusually fast trip is an anecdote. Repeated accepted cycles across conditions are evidence.
Key Terms

Double counting availability

Applying a downtime factor to a cycle time that already includes downtime, so the same lost hours reduce capacity twice.

Release authority

The named person who releases a movement after equipment, product, personnel, receiving and commercial checks; a model may draft the plan but does not release it.

Self-Check — Before You Submit
1. In the book's CNG case, cutting the cycle from 36 to 30 hours raises average fleet capacity from 13,600 to 16,320 units per day. Accepted loading capacity is 15,000. What is the incremental accepted delivery?
  • A. 2,720
  • B. 1,400
  • C. 0
  • D. 3,320
B. 1,400 — The original fleet limits delivery to 13,600 and the faster fleet is capped by loading at 15,000, so the gain is 1,400. 2,720 is the tempting answer because it is the fleet arithmetic, but the completed service is limited by the combined restrictions.
2. A planning tool reports a 72% confidence score for a dispatch, combining an uncertain travel time with a trailer whose readiness has not been accepted. What should the operations director require?
  • A. Accept the dispatch, because 72% is above the threshold
  • B. Raise the confidence threshold to 90%
  • C. Retrain the model on more trips
  • D. Separate the two: the unready trailer is ineligible until readiness is accepted, and only the travel time is treated as uncertain
D. Separate the two: the unready trailer is ineligible until readiness is accepted, and only the travel time is treated as uncertain — Eligibility is not a probability: an unavailable unit is ineligible until accepted readiness is established. Raising the threshold is tempting but still mixes the two states into one score and hides what the planner must resolve.
3. Under the book's assumptions, Route B costs ₦70,000 more than Route A and cuts the probability of the late-service consequence by 17 percentage points. Above roughly what consequence does B have lower expected cost?
  • A. About ₦411,765
  • B. ₦600,000
  • C. About ₦70,000
  • D. About ₦32,000
A. About ₦411,765 — ₦70,000 divided by 0.17 is about ₦411,765. ₦600,000 is the assumed consequence in the example and ₦32,000 is B's expected-cost advantage at that consequence, not the break-even. And expected cost alone is not sufficient where a necessary service or protection condition applies.

Today’s Assignment

Write Section 9 of your plan: the complete cycle behind your Session 1 decision, capacity counted once, uncertainty separated from eligibility and the release authority named.
  • Model the complete cycle behind your decision, stage by stage, and name its binding restriction with the evidence for it.
  • Show how capacity is counted in your business: which measures are combined, how availability is defined and where a restriction could be counted twice.
  • Separate uncertainty from eligibility: list the conditions that make a task ineligible and the quantities that are genuinely uncertain.
  • State the accepted objective, the no-change alternative and who releases the movement, including how a changed confirmation is held.
  • Choose one difficult day in your company and describe how you would replay it with the evidence available at each planning decision.
  • The honest part: where your company has claimed capacity from a faster stage that the rest of the cycle could not absorb. If your business does not run CNG, use your own delivery or transfer cycle. If no AI is in use yet, that is normal. Aim for 400 to 900 words.
YOUR 90-DAY PLAN

Section 9 — The complete cycle, capacity counted once, uncertainty separated from eligibility and the release authority.

How this is marked — the rubric
Models the complete cycle and names the binding restriction with evidence25
Counts capacity once, with an explicit availability basis20
Separates uncertainty from eligibility and names the release authority by role30
States the objective and a feasible replay of a real difficult day, with an honest example25
Total · pass mark 70100
Submitting session 9
Write your answer in Word or Google Docs. The first line must read Session: 9, or the submission is refused. Upload the Word file (.docx), or switch to the Google Doc tab and paste your document’s share link.
Marked against the rubric above and returned as a written letter, saved to your progress page. Do not submit until you have passed the self-check above.
Capabilities Covered
Cycle modellingCapacity without double countingUncertainty versus eligibilityRelease authorityDecision replay
Tick it once you have submitted.Next: Session 10 →
Chapters 13 and 14 · CNG and LPGSESSION 10
LPG Storage, Filling and Distribution
Session 10 of 15 · 25-Minute Module

Why This Matters

LPG makes a hard truth visible: a company can have product in the tank and a sound sales forecast and still fail the customer, because product, containers and transactions are three different things. When they are forced into one number, shortages can hide, adjustments can remove evidence and released cash can be reported as profit. Today you keep the three ledgers distinct, treat every stock adjustment as a decision someone must own, and separate margin, funding release and profit in your decision's economics. If your business does not run LPG, apply this to the product, equipment and transaction records behind your own decision. This session closes Week 2.

25-Minute Module
4:00 – 9:00
Stock, filling and the demand that cannot be filled
  • A count of containers multiplied by nominal content is not automatically an accepted measurement of product transferred, and held or disputed product is not available stock because the ERP quantity is positive.
  • The book's fictional case: 20 tonnes of accepted available product, demand of 18 tonnes, but the accepted filling and compatible-container arrangement supports only 12 tonnes. Feasible filled delivery is 12, leaving six tonnes unmet despite positive product. Buying more bulk does not solve a filling constraint; a demand model that keeps recommending replenishment targets the wrong mechanism.
  • If an accepted change raises feasible filling to 16 tonnes at an assumed ₦300,000, the four extra tonnes at an assumed ₦100,000 contribution give ₦400,000 and simplified net benefit of ₦100,000. If those tonnes would have been filled later without lost contribution, the permanent-sales benefit is overstated. This is illustrative, not a recommended filling method or operating limit.
  • Forecast eligible demand with lead time, usable stock and cash release, compare a simple reorder rule first, and evaluate shortages and excess stock separately.
Increased forecast accuracy may be economically irrelevant if an inflexible replenishment arrangement determines the stock.
14:00 – 19:00
Turnover, margin and funding
  • The book's teaching sensitivity fixes purchase cost at ₦1.2 million and distribution at ₦100,000 per tonne. Selling 100 tonnes at ₦1.5 million: revenue ₦150 million, purchase ₦120 million, distribution ₦10 million, contribution ₦20 million before overhead, financing and tax. It is not a Nigerian price forecast.
  • Assumed sale price per tonneContribution per tonneContribution on 100 sold tonnes
    ₦1.50 million₦200,000₦20 million
    ₦1.35 million₦50,000₦5 million
    ₦1.30 million₦0₦0
  • In this assumed case, a 10% fall in price cuts contribution per tonne by 75%. A forecast supporting higher turnover can carry much less value after a modest margin change. Stock valuation follows the applicable accounting treatment.
  • IN THE PHYSICAL SUPPLY · THE WORKED CASE
    • Physical supply. If only 80 tonnes sell, 20 tonnes remain in the tank carrying ₦24 million of purchase cost. Contribution on the 80 sold is ₦16 million: ₦120 million revenue less ₦96 million product and ₦8 million distribution.
    AT THE CUSTOMER PROMISE · THE PARALLEL
    • Customer promise. If the 100 tonnes were already paid for, cash is locked in inventory despite positive contribution. A better stock policy might release that ₦24 million, but releasing ₦24 million of inventory cost is not ₦24 million of profit. Any financing benefit is calculated separately on accepted funding assumptions, and the same funding is never counted twice.
  • THE DOCTRINE

    Demand information can release cash without creating profit. A working-capital improvement achieved by repeated customer shortage may be commercially unacceptable; management approves the service and funding policy jointly.

Ask for margin, funding release and profit on three separate lines. If they arrive as one, send it back.
Key Terms

Stock adjustment

A decision to correct an accepted stock record, linked to its source, cause, reviewer and authority; never made by an anomaly model on its own prediction.

Funding release

Cash freed by holding less inventory or holding it for less time; distinct from accounting profit and from any recurring financing benefit, which is calculated separately.

Self-Check — Before You Submit
1. A fictional LPG operation has 20 tonnes of accepted product and 18 tonnes of demand, but filling and compatible containers support only 12 tonnes. The demand model recommends buying more bulk product. What is the right response?
  • A. Approve the purchase, since demand exceeds delivery
  • B. Address the filling and container constraint, or agree a reschedule, because more bulk product does not solve it
  • C. Retrain the demand model to forecast 12 tonnes
  • D. Record six tonnes as permanent lost sales
B. Address the filling and container constraint, or agree a reschedule, because more bulk product does not solve it — Six tonnes are unmet despite positive product; the constraint is filling and containers. Retraining to forecast 12 is the subtle trap: it normalises the constraint as demand.
2. Under the book's assumptions, 20 unsold tonnes carry ₦24 million of purchase cost. A new stock policy would avoid buying them. How should the board paper describe the ₦24 million?
  • A. As ₦24 million of additional profit
  • B. As ₦24 million of contribution
  • C. As a cost saving equal to the financing rate times ₦24 million, with nothing else to report
  • D. As funding released from inventory, with any financing benefit calculated separately on accepted assumptions
D. As funding released from inventory, with any financing benefit calculated separately on accepted assumptions — Releasing ₦24 million of inventory cost does not mean the company earned ₦24 million of profit; reporting it as profit is the tempting error.
3. With purchase cost of ₦1.2 million and distribution cost of ₦100,000 per tonne fixed, selling price falls 10% from ₦1.5 million. What happens to contribution per tonne?
  • A. It falls 75%, from ₦200,000 to ₦50,000
  • B. It falls 10%, from ₦200,000 to ₦180,000
  • C. It falls to zero
  • D. It is unchanged because volume is unchanged
A. It falls 75%, from ₦200,000 to ₦50,000 — ₦1.35 million less ₦1.2 million less ₦100,000 is ₦50,000, a 75% fall. Assuming contribution falls in proportion to price is the trap; zero arrives only at ₦1.30 million.

Today’s Assignment

Write Section 10 of your plan: the three ledgers behind your Session 1 decision kept distinct, an adjustment treated as a decision and margin separated from funding.
  • Name the product, container or equipment, and transaction records behind your decision (the three ledgers or their equivalents), and the identifiers that link them.
  • State how a stock or quantity adjustment is evidenced and authorised in your company: source, cause, reviewer, authority, and what an analytical tool may and may not do to the accepted ledger.
  • Reconcile quantity, transaction and cash for one interval as far as your records allow, and name the point where quantity, value or timing becomes uncertain.
  • Separate margin, funding release and profit in the decision's economics, and show the service consequence of any lower-stock policy.
  • The honest part: where your business has closed a variance by adjustment without evidence, or reported released cash as profit. If your business does not run LPG, use the equivalent records behind your own decision. If no AI is in use yet, that is normal. Aim for 400 to 900 words.
YOUR 90-DAY PLAN

Section 10 — The three ledgers kept distinct, an adjustment treated as a decision and margin separated from funding.

How this is marked — the rubric
Keeps the three ledgers or their equivalents distinct, with linking identifiers named25
States how an adjustment is evidenced and authorised, with an owner by role and limits on any tool25
Reconciles quantity, transaction and cash for one interval and locates the uncertainty25
Separates margin, funding release and profit, with an honest example25
Total · pass mark 70100
Submitting session 10
Write your answer in Word or Google Docs. The first line must read Session: 10, or the submission is refused. Upload the Word file (.docx), or switch to the Google Doc tab and paste your document’s share link.
Marked against the rubric above and returned as a written letter, saved to your progress page. Do not submit until you have passed the self-check above.
ASSESSMENT NOW OPEN

Practice Exam 2 — Supply, LNG, Industrial Energy, CNG and LPG opens now. Sit it before you start the next session — it is how you find out whether the doctrine landed, and the practice papers may be resat as often as you like.

15 questions · 25 minutes · covers Sessions 1–10 · pass mark 70
Sit Practice Exam 2 →Closed book, no notes, and Coach Ritchie switches himself off while you sit it.
Capabilities Covered
Three-ledger controlStock adjustment authorityQuantity, transaction and cash reconciliationMargin and funding separationRelease discipline
Tick it once you have submitted.Next: Session 11 →
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