The gasket and the broken studs have been...

Question 1 / 205eccef9cbacbc34ba4d45b5f

Question 1 of 205eccef9cbacbc34ba4d45b5f

The gasket and the broken studs have been replaced on a tank manhole cover. Which of the following methods is satisfactory for testing the repair?

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Question 1 of 20

5eccef9cbacbc34ba4d45b5f

The gasket and the broken studs have been replaced on a tank manhole cover. Which of the following methods is satisfactory for testing the repair?

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🔍 Key Concepts

• Tank testing safety when using air pressure vs. water (hydrostatic) tests • How head of liquid in a tank relates to pressure on a manhole cover and gaskets • Typical shipboard practice for checking tightness of manholes and deck fittings after repairs

💭 Think About

• Which method most closely simulates the normal operating conditions of a loaded tank without creating an unsafe overpressure hazard? • For each option, think about where the highest pressure will be acting and whether the test stresses the gasket and studs the same way cargo or ballast normally would. • Consider which method provides a clear indication of leakage while still protecting the structure of the tank and the manhole cover.

✅ Before You Answer

• Is using compressed air inside a closed tank at 10 psig considered safe practice on board? Verify typical tank test pressures and methods. • Does a hose test on the outside of the cover create the same kind of force on the gasket as liquid inside the tank would? • When the tank is filled until liquid reaches the vent line opening or a known depth, what does that tell you about the pressure at the manhole and how close this is to normal service conditions?

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Question 1 of 20

The gasket and the broken studs have been replaced on a tank manhole cover. Which of the following methods is satisfactory for testing the repair?

Pressurize the tank with 10 psig air, soap the repaired area, watch for visible signs of leakage or bubbles.

Fill the tank with water via the ballast pump until the innage reading corresponds to the maximum depth of the tank.

Hose test the repaired area with a minimum of 100 psig water pressure.

Fill the tank via the ballast pump until water flows from the vent line opening on deck.

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Question 1 / 205eccef9cbacbc34ba4d45b5f

Question 1 of 205eccef9cbacbc34ba4d45b5f

The gasket and the broken studs have been replaced on a tank manhole cover. Which of the following methods is satisfactory for testing the repair?

Back

Question 1 of 20

5eccef9cbacbc34ba4d45b5f

The gasket and the broken studs have been replaced on a tank manhole cover. Which of the following methods is satisfactory for testing the repair?

No comments yet

Be the first to share your thoughts!

If the question has a related picture, it will appear here.

🔍 Key Concepts

💭 Think About

✅ Before You Answer

👋 Hi! I'm Genie, your AI study assistant. How can I help you with this question?

Quick actions

— No credit card needed