Get Project Management Dashboard & Templates bundle: 📋 Great projects are built on great documentation. A project can have a strong strategy, talented people, and a clear deadline, but without the right documentation, keeping everything aligned becomes much harder. This Project Management Documentation Templates collection covers the key areas of the project lifecycle: 🔹 Project Initiation Business Case • Project Assessment • Resource Plan • Project Charter 🔹 Project Planning Gantt Chart • SWOT Analysis • Project Manager • Tracking Spreadsheet • Action Plan 🔹 Project Execution Execution Template • Requirements Traceability • Test Cases • Test Coverage • SAP Implementation 🔹 Project Tracking RACI • RAID Log • Root Cause Analysis • Gap Analysis • Execution Tracking 🔹 Change Management Change Requests • Impact Assessment • Change Log • Change Curve 🔹 Risk & Issue Management Risk Identification • Incident Priority • Risk Management • Issue Resolution • Cause/Effect Ana...
Medical Gas Systems – From Basics to Professional Design
🔷 Part 7 – Medical Vacuum System (Real Calculation & Case Study)
This post is different.
No theory…
Only Real Engineering Thinking.
* MANY ENGINEERS GO TO THIS WAY FOR DESIGN THE VACUUM FLOW RATE.
🔹 📊 Project Example
Hospital with:
• ICU → 10 Beds
• Operating Rooms → 4
• Wards → 20 Beds
🔹 Step 1: Estimate Vacuum Points
Assume:
• ICU → 2 points/bed → 20 points
• OR → 3 points/room → 12 points
• Wards → 1 point/bed → 20 points
👉 Total = 52 Vacuum Points
🔹 Step 2: Estimate Flow
Typical design assumption:
✔ 40–60 L/min per active outlet
Assume average:
👉 50 L/min
🔹 Step 3: Apply Diversity Factor
(Not all outlets operate at the same time)
Typical:
• ICU → High usage
• OR → Medium
• Wards → Low
👉 Assume Diversity = 0.4
🔹 Step 4: Calculate Required Capacity
Required Flow:
52 × 50 × 0.4 =
👉 1040 L/min
🔹 Final Design Decision
✔ Select vacuum pumps based on:
👉 ~1040 L/min total demand
✔ Apply redundancy:
👉 (Duty + Standby + Assist)
* BUT THIS WAY IS WRONG !!!!!!!!
THE RIGHT WAY IS THE FOLLOWING:
🏥 Medical Gas Systems – From Basics to Professional Design
🔷 Part 7 – Medical Vacuum System (Real Calculation Based on HTM 02-01)
This post is different.
No assumptions.
No average diversity.
Only code-based calculation (HTM 02-01).
🔹 📊 Project Case
Hospital with:
• ICU →10 Beds
• Wards → 20 Beds
• Operating Rooms → 4
🔹 📖 Calculation Method (According to HTM 02-01)
Instead of using a fixed diversity factor, HTM 02-01 provides equations to calculate demand based on number of outlets:
👉 General form:
Q = Base Flow + (n – 1) × Incremental Flow
🔹 1️⃣ Wards (20 Beds)
Q = 40 + (19 × 10)
👉 Q = 230 L/min
🔹 2️⃣ ICU (Critical Care – 10 Beds )
10 Beds x2= 20 Out let
Q = 40 + (19 × 10)
👉 Q = 230 L/min
🔹 3️⃣ Operating Rooms (4 Rooms)
Including the following:
Anesthetic
Surgeon
Operation Suite
Q = 80 + (3 × 40)
👉 Q = 200 L/min
🔹 ✅ Total Required Vacuum Flow
👉 Q total = 230 + 230 + 200 = 660 L/min
🔹 Final Design Decision
✔ Select vacuum pumps based on:
👉 ~660 L/min total demand
✔ Apply redundancy:
👉 (Duty + Standby + Assist)
🔹 ⚙ Engineering Insight (Very Important)
HTM does NOT rely on:
❌ Fixed diversity factor (like 0.4)
❌ Full load assumption
✔ Instead, it uses progressive demand equations
which already include real usage diversity
🔹 ⚠ Real Design Mistake
Many engineers:
❌ Use average diversity
❌ Or assume all outlets working
👉 Result:
• Oversized systems
• Higher cost
• Inefficient operation
🔹 🔥 Key Lesson
Accurate medical gas design is not about assumptions…
It is about following the code correctly.
📌 In the next post:
🔷 AGSS System – The Hidden Safety System in Operating Rooms
Comments
Post a Comment