navy 3m
Navy 3M: system goals and policy, the Planned Maintenance System (MIP, MRC, LOEP, periodicity codes, situational and IEM codes), feedback reports and force revisions, the Maintenance Data System and CSMP, SKED scheduling and accomplishment ratings, and assist visits, inspections and training. Sources: Ships' 3-M Manual NAVSEAINST 4790.8D (17 Jun 2021, public release) and OPNAVINST 4790.4G (1 Aug 2024).
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01What is the goal of the Ship's 3-M System?
To manage maintenance and maintenance support so the Navy gets maximum equipment operational readiness.
VERIFIED AGAINST THE SOURCE
“The goal of the Ship's 3-M System is to manage maintenance and maintenance support to achieve maximum equipment operational readiness.”
— NAVSEAINST 4790.8D, Ships' 3-M Manual (17 Jun 2021), PDF p. 28 ↗02What does the Navy call the nucleus for managing afloat equipment maintenance?
The 3M System. It gives maintenance and material managers a process to plan, acquire, organize, direct, control and evaluate the people and material used for maintenance.
VERIFIED AGAINST THE SOURCE
“The 3M System is the nucleus for managing afloat and applicable shore station equipment. This system provides maintenance and material managers throughout the Navy with a process for planning, acquiring, organizing, directing, controlling and evaluating the manpower and material resources used to support maintenance.”
— OPNAVINST 4790.4G, Maintenance and Material Management System Policy (1 Aug 2024), PDF p. 2 ↗03OPNAVINST 4790.4G lists six things the 3M System must provide. Name them.
Standardization, efficiency, documentation, analysis, configuration status accounting (CSA), and scheduling.
VERIFIED AGAINST THE SOURCE
“(5)Configuration Status Accounting (CSA) – reporting and recording changes to installed equipment”
— OPNAVINST 4790.4G, Maintenance and Material Management System Policy (1 Aug 2024), PDF p. 2 ↗04In the 3M System, what does 'standardization' mean?
Achieving uniform maintenance standards and criteria.
VERIFIED AGAINST THE SOURCE
“Standardization - achievement of uniform maintenance standards and criteria.”
— OPNAVINST 4790.4G, Maintenance and Material Management System Policy (1 Aug 2024), PDF p. 2 ↗05In the 3M System, why are maintenance actions documented?
To establish a material history.
VERIFIED AGAINST THE SOURCE
“Documentation – recording maintenance and maintenance support actions to establish a material history.”
— OPNAVINST 4790.4G, Maintenance and Material Management System Policy (1 Aug 2024), PDF p. 2 ↗06Which current instruction sets Navy 3M System policy?
OPNAVINST 4790.4G (1 August 2024), which cancelled OPNAVINST 4790.4F. NAVSEAINST 4790.8 gives the implementation guidance.
VERIFIED AGAINST THE SOURCE
“This instruction provides the current Navy 3M System policy; reference (b) provides implementation guidance”
— OPNAVINST 4790.4G, Maintenance and Material Management System Policy (1 Aug 2024), PDF p. 1 ↗07Does OPNAVINST 4790.4G cover nuclear propulsion plants?
No. Nuclear propulsion plants and their test equipment under NAVSEA 08 are excluded, as are fleet ballistic missile systems and aeronautical support equipment covered by the Naval Aviation Maintenance Program.
VERIFIED AGAINST THE SOURCE
“This instruction does not apply to nuclear propulsion plants and associated test equipment under the cognizance of Commander, Naval Sea Systems Command (COMNAVSEASYSCOM) Nuclear Propulsion (NAVSEA 08), fleet ballistic missile systems or aeronautical support equipment covered in the Naval Aviation Maintenance Program.”
— OPNAVINST 4790.4G, Maintenance and Material Management System Policy (1 Aug 2024), PDF p. 1 ↗08What is PMS, according to 3M policy?
The Planned Maintenance System: a standardized method for planning, scheduling and accomplishing preventive maintenance by ship's force.
VERIFIED AGAINST THE SOURCE
“PMS is a standardized method for planning, scheduling and accomplishing preventive maintenance by Ships’ force.”
— OPNAVINST 4790.4G, Maintenance and Material Management System Policy (1 Aug 2024), PDF p. 2 ↗09What is the objective of PMS?
To keep equipment within design specifications through preventive maintenance, and to find and fix potential problems before the equipment or system becomes inoperable.
VERIFIED AGAINST THE SOURCE
“The objective of PMS is to maintain equipment within design specifications through preventive maintenance and to identify and correct potential problems before the equipment or system becomes inoperable.”
— NAVSEAINST 4790.8D, Ships' 3-M Manual (17 Jun 2021), PDF p. 32 ↗10PMS and another technical publication disagree. Which one prevails, and what should you do?
PMS requirements prevail. Report the difference with a PMS feedback report.
VERIFIED AGAINST THE SOURCE
“Where a difference exists between the requirements and procedures of PMS and other technical publications or systems, PMS requirements will prevail. Differences should be reported using PMS feedback reporting procedures.”
— NAVSEAINST 4790.8D, Ships' 3-M Manual (17 Jun 2021), PDF p. 32 ↗11Under what concept are PMS maintenance procedures developed?
Reliability-Centered Maintenance (RCM).
VERIFIED AGAINST THE SOURCE
“PMS maintenance procedures will be developed under Reliability-Centered Maintenance concepts”
— OPNAVINST 4790.4G, Maintenance and Material Management System Policy (1 Aug 2024), PDF p. 2 ↗12What is a Maintenance Index Page (MIP)?
A basic PMS reference document: a complete index of the MRCs for a ship system, subsystem or equipment.
VERIFIED AGAINST THE SOURCE
“MIPs are basic PMS reference documents. Each MIP is a complete index of Maintenance Requirement Card (MRC) s applicable to a ship system, subsystem, or equipment.”
— NAVSEAINST 4790.8D, Ships' 3-M Manual (17 Jun 2021), PDF p. 34 ↗13What does a Maintenance Requirement Card (MRC) provide?
Detailed procedures for a maintenance requirement: who, what, when, how, and with what resources it will be done.
VERIFIED AGAINST THE SOURCE
“MRCs (Figure I-2-3) provide detailed procedures for performing maintenance requirements and describes who, what, when, how, and with what resources a specific maintenance requirement will be accomplished.”
— NAVSEAINST 4790.8D, Ships' 3-M Manual (17 Jun 2021), PDF p. 39 ↗14What does the List of Effective Pages (LOEP) list?
The MIPs for the systems and equipment assigned to each work center. It also lists equipment that needs no PMS and equipment being evaluated for PMS.
VERIFIED AGAINST THE SOURCE
“The LOEP, (Figure I-2-1) provides a listing of the Maintenance Index Pages (MIP) for systems and equipment assigned to each work center, those systems and equipment not requiring PMS, or those systems and equipment currently being evaluated for PMS.”
— NAVSEAINST 4790.8D, Ships' 3-M Manual (17 Jun 2021), PDF p. 33 ↗15On an MRC's control number, what do a final Y, N or U mean?
Y means repair parts are required. N means they are not. U means it is an unscheduled maintenance MRC that may need parts.
VERIFIED AGAINST THE SOURCE
“The last character may be a “Y” (indicating repair parts are required for this MRC), an “N” (indicating repair parts are not required for this MRC), or a “U” (indicating this is an unscheduled maintenance MRC and may require parts).”
— NAVSEAINST 4790.8D, Ships' 3-M Manual (17 Jun 2021), PDF p. 37 ↗16What are the three categories of PMS periodicity?
Calendar, non-calendar, and inactive equipment maintenance (IEM).
VERIFIED AGAINST THE SOURCE
“There are three categories of periodicities: calendar, non-calendar, and IEM.”
— NAVSEAINST 4790.8D, Ships' 3-M Manual (17 Jun 2021), PDF p. 39 ↗17What do the PMS calendar periodicity codes D, W, M, Q, S and A stand for?
Daily, weekly, monthly, quarterly, semi-annually and annually.
VERIFIED AGAINST THE SOURCE
“1. D – Daily 2. W – Weekly 3. M – Monthly 4. Q – Quarterly 5. S – Semi-annually 6. A – Annually”
— NAVSEAINST 4790.8D, Ships' 3-M Manual (17 Jun 2021), PDF p. 40 ↗18What does a number in front of a periodicity code, such as 2D, 3W or 8M, mean?
The number of days, weeks or months in the period. 2D is two days and 3W is three weeks.
VERIFIED AGAINST THE SOURCE
“number of days, weeks, and months encompassing the period. For example, 2D represents two days, 3W represents three weeks”
— NAVSEAINST 4790.8D, Ships' 3-M Manual (17 Jun 2021), PDF p. 39 ↗19What does an asterisk (*) after a PMS periodicity code mean?
The item is a Safety of Ship item.
VERIFIED AGAINST THE SOURCE
“An asterisk (*) following the periodicity code indicates a Safety of Ship item”
— NAVSEAINST 4790.8D, Ships' 3-M Manual (17 Jun 2021), PDF p. 40 ↗20What does a plus sign (+) after a PMS periodicity code mean?
The procedure is mainly meant to be done by off-ship maintenance personnel, on ship classes such as LCS and DDG 1000 that use them for PMS.
VERIFIED AGAINST THE SOURCE
“A plus sign indicates this procedure is primarily intended to be scheduled for accomplishment by off-ship maintenance personnel for those classes of ships (e.g. LCS, DDG 1000) that utilize off-ship personnel for PMS.”
— NAVSEAINST 4790.8D, Ships' 3-M Manual (17 Jun 2021), PDF p. 37 ↗21What do the non-calendar periodicity codes R, U and AP mean?
R is a situational requirement, U is unscheduled maintenance, and AP is an assessment procedure.
VERIFIED AGAINST THE SOURCE
“1. R - Situational Requirement 2. U - Unscheduled Maintenance 3. AP - Assessment Procedure”
— NAVSEAINST 4790.8D, Ships' 3-M Manual (17 Jun 2021), PDF p. 41 ↗22What are the four inactive equipment maintenance (IEM) codes?
LU (lay-up), PM (periodic maintenance), SU (start-up) and OT (operational test).
VERIFIED AGAINST THE SOURCE
“1. LU – Lay-Up 2. PM – Periodic Maintenance 3. SU – Start-Up 4. OT – Operational Test”
— NAVSEAINST 4790.8D, Ships' 3-M Manual (17 Jun 2021), PDF p. 41 ↗23Who determines whether equipment is in inactive equipment maintenance (IEM) status?
The department head.
VERIFIED AGAINST THE SOURCE
“The Department Head is responsible for determining equipment IEM status.”
— NAVSEAINST 4790.8D, Ships' 3-M Manual (17 Jun 2021), PDF p. 59 ↗24A MIP has two monthly MRCs. How are they numbered?
Consecutively, for example M-1 and M-2.
VERIFIED AGAINST THE SOURCE
“When more than one MRC of the same periodicity exists in the same MIP, the MRCs should be numbered consecutively”
— NAVSEAINST 4790.8D, Ships' 3-M Manual (17 Jun 2021), PDF p. 41 ↗25In SKED, what is the allowed date range for a quarterly check?
61 to 121 days.
VERIFIED AGAINST THE SOURCE
“9. Quarterly: 61 to 121 days.”
— NAVSEAINST 4790.8D, Ships' 3-M Manual (17 Jun 2021), PDF p. 40 ↗26What is a PMS situational requirement?
A preventive maintenance task done only when a specified situation, known event or set of circumstances occurs. The event must happen before the MRC is scheduled.
VERIFIED AGAINST THE SOURCE
“A PMS situational requirement is a preventive maintenance task that is to be accomplished only when a specified situation, known event, or set of circumstances occur. A situational requirement defines an event that must occur for an MRC to be scheduled.”
— NAVSEAINST 4790.8D, Ships' 3-M Manual (17 Jun 2021), PDF p. 46 ↗27When is an MRC considered complete?
Only when every procedural step is done on all the equipment listed on the MRC or its EGL or LGL, including inspections where deficiencies were found.
VERIFIED AGAINST THE SOURCE
“MRC completion status is dependent on the accomplishment of all procedural steps on all of the equipment listed on the MRC, its accompanying Equipment Guide List (EGL) or Location Guide List (LGL)”
— NAVSEAINST 4790.8D, Ships' 3-M Manual (17 Jun 2021), PDF p. 50 ↗28Before preliminary MIP requirements are scheduled, who must verify they apply to installed equipment?
The work center supervisor (WCS) and the department head.
VERIFIED AGAINST THE SOURCE
“Before scheduling preliminary MIP requirements, the WCS and the Department Head must verify their applicability to installed equipment.”
— NAVSEAINST 4790.8D, Ships' 3-M Manual (17 Jun 2021), PDF p. 50 ↗29What is a PMS feedback report (FBR) used for?
To tell NSLC about PMS matters: to report problems and to request PMS coverage for newly installed systems or equipment.
VERIFIED AGAINST THE SOURCE
“The PMS FBR is used to notify NSLC of matters related to PMS. Feedbacks are used to report problems and also to request PMS coverage for newly installed systems or equipment.”
— NAVSEAINST 4790.8D, Ships' 3-M Manual (17 Jun 2021), PDF p. 52 ↗30What is a Category A PMS feedback report?
A non-technical FBR for PMS needs that need no technical review, such as changes to work center LOEPs.
VERIFIED AGAINST THE SOURCE
“CAT A (Non-Technical). This type of FBR is non-technical in nature and is intended to meet PMS needs which do not require technical review, including changes in Work Center LOEPs.”
— NAVSEAINST 4790.8D, Ships' 3-M Manual (17 Jun 2021), PDF p. 53 ↗31What is a Category B PMS feedback report?
A technical FBR that reports technical discrepancies preventing PMS performance. It is either Routine or Urgent.
VERIFIED AGAINST THE SOURCE
“CAT B (Technical). This type of FBR is technical in nature and is used to report technical discrepancies inhibiting PMS performance. Category B FBRs are either Routine or Urgent.”
— NAVSEAINST 4790.8D, Ships' 3-M Manual (17 Jun 2021), PDF p. 53 ↗32When is a technical PMS feedback report classed Urgent?
When following the MRC as written could affect personnel safety or ship safety, or could damage equipment.
VERIFIED AGAINST THE SOURCE
“An FBR is Urgent when the reason for submission involves safety of personnel, safety of ship, or the potential for equipment damage if the MRC procedure is followed as written.”
— NAVSEAINST 4790.8D, Ships' 3-M Manual (17 Jun 2021), PDF p. 53 ↗33When is a technical PMS feedback report classed Routine?
When it concerns the technical requirements of the documentation and does not involve ship or personnel safety, such as a discrepancy or a request to clarify an MRC.
VERIFIED AGAINST THE SOURCE
“An FBR is Routine when the reason for submission relates to the technical requirements of the documentation and it does not deal with safety of ship or personnel.”
— NAVSEAINST 4790.8D, Ships' 3-M Manual (17 Jun 2021), PDF p. 53 ↗34When do PMS force revisions normally take effect?
On the first Monday of the quarter. They are sent out before the quarter starts so ships can prepare.
VERIFIED AGAINST THE SOURCE
“FRs are normally effective on the first Monday of the quarter”
— NAVSEAINST 4790.8D, Ships' 3-M Manual (17 Jun 2021), PDF p. 54 ↗35What must the 3-M Coordinator do with each Advance Change Notice (ACN)?
Record its receipt, keep a copy in the PMS Master File, and send a copy to the affected work centers.
VERIFIED AGAINST THE SOURCE
“The activity 3-M Coordinator (3MC) must record the receipt of each ACN, maintain a copy in the PMS Master File, and distribute a copy to the appropriate Work Center (s).”
— NAVSEAINST 4790.8D, Ships' 3-M Manual (17 Jun 2021), PDF p. 51 ↗36What does the 3M System require all afloat activities to report?
Deferred and completed maintenance actions, configuration changes, and configuration file corrections.
VERIFIED AGAINST THE SOURCE
“The 3-M System requires all afloat activities to report deferred and completed maintenance actions, configuration changes, and configuration file corrections.”
— NAVSEAINST 4790.8D, Ships' 3-M Manual (17 Jun 2021), PDF p. 95 ↗37What is the purpose of the Current Ship's Maintenance Project (CSMP)?
To give maintenance managers one consolidated list of deferred maintenance that shows the ship's material condition.
VERIFIED AGAINST THE SOURCE
“The purpose of the CSMP is to provide unit and activity maintenance managers with a consolidated list of deferred maintenance to identify the material condition of the ship.”
— NAVSEAINST 4790.8D, Ships' 3-M Manual (17 Jun 2021), PDF p. 100 ↗38Who is responsible for making sure the CSMP accurately describes a work center's material condition?
The work center supervisor (WCS).
VERIFIED AGAINST THE SOURCE
“It is the responsibility of each Work Center Supervisor (WCS) to ensure that the CSMP accurately describes the material condition of the Work Center.”
— NAVSEAINST 4790.8D, Ships' 3-M Manual (17 Jun 2021), PDF p. 93 ↗39What classification of data may the CSMP contain?
Unclassified data only. The data is still business sensitive and must not be released to the public.
VERIFIED AGAINST THE SOURCE
“The CSMP must contain UNCLASSIFIED data only but that data is business sensitive and must not be made available for public release.”
— NAVSEAINST 4790.8D, Ships' 3-M Manual (17 Jun 2021), PDF p. 93 ↗40How many job actions can one work candidate (OPNAV 4790/2K) cover?
One. Submit a separate work candidate for each job action, and do not bundle several pieces of equipment on one.
VERIFIED AGAINST THE SOURCE
“One Work Candidate (OPNAV 4790/2K or equivalent) must be submitted for each job action. Do not bundle multiple equipment on one Work Candidate.”
— NAVSEAINST 4790.8D, Ships' 3-M Manual (17 Jun 2021), PDF p. 95 ↗41Who must keep the Work Candidate/JSN Log?
The work center supervisor (WCS).
VERIFIED AGAINST THE SOURCE
“The Work Center Supervisor (WCS) must maintain a Work Candidate/JSN Log”
— NAVSEAINST 4790.8D, Ships' 3-M Manual (17 Jun 2021), PDF p. 96 ↗42What job control number (JCN) goes on a material request that supports a maintenance action?
The same JCN as that maintenance action.
VERIFIED AGAINST THE SOURCE
“Any material requests that support a maintenance action must be assigned the identical JCN of that action and contain complete and accurate information.”
— NAVSEAINST 4790.8D, Ships' 3-M Manual (17 Jun 2021), PDF p. 96 ↗43What version of SKED satisfies the 3-M Manual's administrative rules for PMS scheduling?
SKED version 3.2 or higher.
VERIFIED AGAINST THE SOURCE
“The use of SKED version 3.2 or higher for PMS scheduling constitutes full compliance with all administrative provisions of this manual.”
— NAVSEAINST 4790.8D, Ships' 3-M Manual (17 Jun 2021), PDF p. 110 ↗44Why are SKED PMS schedules called dynamic?
They change automatically with ship evolutions, equipment status, situational events and other maintenance.
VERIFIED AGAINST THE SOURCE
“PMS schedules are dynamic, meaning they automatically change according to ship evolutions, equipment status, situational events, and other maintenance requirements.”
— NAVSEAINST 4790.8D, Ships' 3-M Manual (17 Jun 2021), PDF p. 111 ↗45Under SKED true interval scheduling, how many days apart are weekly, monthly and quarterly checks?
Weekly every 7 days, monthly every 31 days, and quarterly every 91 days.
VERIFIED AGAINST THE SOURCE
“Weekly checks are performed every 7 days; monthly checks every 31 days; quarterly checks every 91 days”
— NAVSEAINST 4790.8D, Ships' 3-M Manual (17 Jun 2021), PDF p. 112 ↗46Can a supervisor manually reschedule a PMS check that is out of periodicity in SKED?
No. If the check is not done, it moves to the next week when the work center is closed out for the week.
VERIFIED AGAINST THE SOURCE
“Supervisors are not allowed to manually reschedule checks that are out of periodicity. If maintenance is not performed, the check is moved to the next week on the schedule when the Work Center is closed out for the week.”
— NAVSEAINST 4790.8D, Ships' 3-M Manual (17 Jun 2021), PDF p. 112 ↗47When does SKED generate a PMS alert?
At weekly closeout, when a maintenance task has gone out of periodicity.
VERIFIED AGAINST THE SOURCE
“If a maintenance task goes out of periodicity, a PMS alert will be generated when a weekly closeout is performed.”
— NAVSEAINST 4790.8D, Ships' 3-M Manual (17 Jun 2021), PDF p. 112 ↗48Who performs the SKED weekly closeout?
The work center supervisor (WCS), after the weekly maintenance tasks are done.
VERIFIED AGAINST THE SOURCE
“After weekly maintenance tasks have been completed, the WCS must perform the function known as “weekly closeout”.”
— NAVSEAINST 4790.8D, Ships' 3-M Manual (17 Jun 2021), PDF p. 114 ↗49PMS was not done on time. Who enters the reason, and who reviews it?
The supervisor enters the reason. The division officer approves or disapproves it.
VERIFIED AGAINST THE SOURCE
“The Supervisor must enter the reason why maintenance was not performed on time. The reason will be reviewed and approved/disapproved by the Division Officer.”
— NAVSEAINST 4790.8D, Ships' 3-M Manual (17 Jun 2021), PDF p. 114 ↗50In SKED, who approves electronic MRC procedure line-outs?
The division LCPO.
VERIFIED AGAINST THE SOURCE
“With SKED, this process is automated through electronic procedure line-outs, which are then approved by the Division LCPO.”
— NAVSEAINST 4790.8D, Ships' 3-M Manual (17 Jun 2021), PDF p. 113 ↗51What does the SKED Periodic Accomplishment Rating (PAR) measure?
The percentage of checks done within periodicity. PMS alerts and lost checks count against it.
VERIFIED AGAINST THE SOURCE
“PAR measures the percentage of checks performed within periodicity. PAR factors PMS Alerts and lost checks.”
— NAVSEAINST 4790.8D, Ships' 3-M Manual (17 Jun 2021), PDF p. 119 ↗52How is the SKED Spot Check Accomplishment Rating (SCAR) calculated?
Satisfactory spot checks divided by the total number of spot checks.
VERIFIED AGAINST THE SOURCE
“SCAR measures the number of satisfactory checks divided by the total number of spot checks.”
— NAVSEAINST 4790.8D, Ships' 3-M Manual (17 Jun 2021), PDF p. 119 ↗53What is a 3-M assist visit?
An instructional visit that gives training and help to the activity that asked for it. The TYCOM schedules it on request.
VERIFIED AGAINST THE SOURCE
“The TYCOM must schedule assist visits to each ship or shore activity as requested.”
— NAVSEAINST 4790.8D, Ships' 3-M Manual (17 Jun 2021), PDF p. 133 ↗54What must every 3-M assist visit include before it ends?
A debrief with the commanding officer.
VERIFIED AGAINST THE SOURCE
“Each assist visit must include a debriefing with the Commanding Officer prior to concluding the visit.”
— NAVSEAINST 4790.8D, Ships' 3-M Manual (17 Jun 2021), PDF p. 133 ↗55What is a TYCOM 3-M inspection?
A comprehensive audit of the ship's 3-M program, done by the TYCOM or by the ISIC under TYCOM direction.
VERIFIED AGAINST THE SOURCE
“A TYCOM (or ISIC under TYCOM direction) inspection is a comprehensive audit of the Ships' 3-M Program.”
— NAVSEAINST 4790.8D, Ships' 3-M Manual (17 Jun 2021), PDF p. 134 ↗56Who is responsible for a ship's own 3-M training program?
The commanding officer, who sets up and keeps it running to sustain what Sailors learned in formal training.
VERIFIED AGAINST THE SOURCE
“The Commanding Officer establishes and maintains a viable 3-M System training program to sustain the level of knowledge and awareness received during formal training.”
— NAVSEAINST 4790.8D, Ships' 3-M Manual (17 Jun 2021), PDF p. 160 ↗57Which publication holds the 3-M Personnel Qualification Standards?
NAVEDTRA 43241.
VERIFIED AGAINST THE SOURCE
“3-M Personnel Qualification Standards (NAVEDTRA 43241)”
— NAVSEAINST 4790.8D, Ships' 3-M Manual (17 Jun 2021), PDF p. 18 ↗58Who is the program manager for fleet-wide 3-M training?
The Center for Service Support (CSS).
VERIFIED AGAINST THE SOURCE
“The Center for Service Support (CSS) is the program manager for fleet-wide 3-M training.”
— NAVSEAINST 4790.8D, Ships' 3-M Manual (17 Jun 2021), PDF p. 157 ↗Know questions we're missing?
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