Army Electrical Explosives Safety (Ammo-28) Exam 2023/ solved

1. Which two publications provide detailed information on lightning protec- tion systems?: DA PAM 385-64 NFPA 780 2. Which statements about lightning protection are true?Select all that ap- ply.: Lightning can detonate munitions and explosives. Lightning seeks the path of least resistance to ground. Lightning cannot be stopped or prevented. 3. Which statement is true about a mast LPS?: Each mast must have two paths to ground. 4. A 30-foot tall building is protected by a catenary system. How far from the building should the masts be placed?: at least 6 feet 5. Which LPS uses air terminals and conductors mounted directly to the structure?: Integral 6. Why does the wooden mast have an air terminal on top and two down conductors running its entire length?: The wooden mast is not electrically conductive 7. Which of the following is NOT a requirement for air terminals?: Air Terminals must be at least 6 feet tall. 8. During the inspection, John's team logged a discrepancy for this air terminal. Why?: The air terminal is not attached to a conductor. 9. How many down conductors are required for a building with a perimeter length of 325 feet?: 4 10. While conducting an LPS inspection, you see mast down conductors routed as shown in the image below. Do you write it up as a discrepancy? Why or why not?: Yes, because mast down conductors should be 180 degrees apart. 11. A steel beam, connected to the main LPS at its upper and lower extrem- ities, is used as a down conductor. At what intervals should it be connected to the grounding system?: 60 feet or less 12. Which statement about grounding systems is true?: The resistance should be 25 ohms or less. 13. Which of the following statements regarding bonding are true? Select all that apply.: Bonding reduces the threat of sideflash by providing a low impedance path to ground. Bonding is a way of connecting LPS conductors to grounded metal objects. 14. When should a grounded metal object be considered for bonding?: When it's within 6 feet of a conductor 15. Which bonding method is the most permanent and secure?: Exothermic weld 16. Which factors are used to calculate bonding distance?Select all that apply.: Height of proposed bond Flashover medium Number of down conductors 17. While conducting the inspection, John's team noticed a new metal light pole installed 3 feet from the down conductor at the corner of this building. They logged a discrepancy. Why?: Because grounded metal objects within 6 feet of LPS conductors should be bonded to it 18. Which types of information does an LPS record provide? Select all that apply.: Test locations Test item descriptions or listing Type of test Responsibilities for conducting and administering the test plan 19. Which section of DA PAM 385-64 provides LPS visual inspection guid- ance?: Appendix D 20. How often is a visual inspection required on an LPS?: Every 12 months 21. While conducting the LPS inspection, the team saw these surveillance cameras. Does this building comply with LPS standards?: No, because the surveillance cameras are outside the zone of protection.