Closed book test

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API 653 Covers which of the following activities?

Tank design

tank fabrication

tank operation

tank reconstruction (correct)

Corroded roof plates on a fixed roof tank shall not be less than

designers recomendation

0.090" in any 100 inch squared area (correct)

0.050" at any point

tmin averaged over the critical length

A new nameplate should be added to a tank after

either major repairs or major alterations

either major alterations or tank reconstruction

it has been relocated

it has been reconstructed (correct)

for a reconstructed tank, the shell thickness readings used to determine the allowable shell height must have been taken within the last:

180 days Signup and view all the answers

the impressed current sources of a cathodic protection system should be checked (to see if still operating) every

two months Signup and view all the answers

which of the following is part of the critical zone

the bottom within 3" of the shell Signup and view all the answers

a tank is 20 years old and has a bottom thickness of 0.170". Original bottom thickness was 0.250". Determine the interval for the next internal inspections

17.5 years Signup and view all the answers

Widely scattered pitting in a tank shell can be ignored if the extent of the pitting does not exceed

2 inch in any vertical 8 inches Signup and view all the answers

Which of the following is an advantage of the galvanic cathodic protection systems

annual maintenance costs are generally low Signup and view all the answers

Hot taps are permitted:

only in the liquid section of the tank Signup and view all the answers

An API 653 hydro test shall be held for at least

24 hours Signup and view all the answers

Which of the following activities is considered an alteration in API 653

the addition of a 16 NPS nozzle Signup and view all the answers

repaired or replaced bottom welds shall be examined with either a vacuum box or by using

a tracer gas test Signup and view all the answers

welding procedures for tank repairs to the shell should be qualified in accordance with

ASME Section IX Signup and view all the answers

A lap patch is installed on a tank bottom and the patch plate crosses a tank bottom weld. what is the minimum dimension for this patch plate

12" Signup and view all the answers

API 653 is intended to be used by Owner/Operator organizations that

have access to engineers and inspectors Signup and view all the answers

Which of the following tests are required when qualifying a weld procedure

a minimum of 2 tension tests Signup and view all the answers

calcining of a tanks concrete ringwall can occur when the concrete is

exposed to a high temperature Signup and view all the answers

Which of the following does not increase the risk of brittle fracture

change to a product with increased viscosity Signup and view all the answers

Which external floating roof is most susceptible to sinking

pan Signup and view all the answers

All new materials used for repairs must conform to

current applicable standard Signup and view all the answers

which of the following is not considered one of the major types of inspection records

operation history Signup and view all the answers

Which tank component in a reconstructed tank must be identified by material type

bottom plates welded to the shell Signup and view all the answers

an F on the radiograph indicates

the IQI is placed on the film side Signup and view all the answers

if an atmospheric tank is air tested, the pressure should not exceed

2 inches of water Signup and view all the answers

the welding position 4G is a(n)

overhead plate groove weld Signup and view all the answers

A new tank bottom was installed above the existing tank bottom. Now the spacing between a nozzle and the new bottom is below the minimum requirements of API 650. Which of the following is not an acceptable method of repair

remove the existing reinforcement pad Signup and view all the answers

During a tank repair, if API 653 conflicts with the design standard, which standard governs?

API 653 Signup and view all the answers

All reconstruction work must be authorized by the

either the engineer or inspector Signup and view all the answers