R 082012Z JUL 26
MARADMIN 311/26
MSGID/GENADMIN/CMC WASHINGTON DC//
SUBJ/MARINE CORPS HEAT AND COLD STRESS INJURY PREVENTION PROGRAM//
REF/A/DOC/CMC WASHINGTON DC SD/08FEB2022//
REF/B/DOC/CMC WASHINGTON DC SD/15OCT2020//
REF/C/DOC/CHIEF BUMED WASHINGTON DC/15AUG2023//
REF/D/DOC/CHIEF BUMED WASHINGTON DC/JUNE1991//
REF/E/DOC/ CO NMCFHPC PORTSMOUTH VA/AUG2024//
REF/F/DOC/CMC WASHINGTON SD/27SEP2021//
REF/G/DOC/CHIEF BUMED WASHINGTON DC/14MAY2025//  
NARR/REF A IS MCO 5100.29C, SAFETY MANAGEMENT SYSTEM.  REF B IS 
MCO 5100.29C VOL 2, RISK MANAGEMENT.  REF C IS NAVMED P-5010-3, 
MANUAL OF NAVAL PREVENTIVE MEDICINE HEAT AND COLD STRESS 
INJURIES (ASHORE, AFLOAT, AND GROUND FORCES).  REF D IS MANUAL OF 
PREVENTIVE MEDICINE, CHAPTER 9, PREVENTIVE MEDICINE FOR GROUND 
FORCES, SECS. V AND VI.  REF E IS NMCFHPC-TM 6260.6B, PREVENTION AND
TREATMENT OF HEAT AND COLD STRESS INJURIES. REF F IS MCO 5100.29C 
Vol 9, NAVY AND MARINE CORPS SAFETY INVESTIGATION AND REPORTING 
MANUAL. REF G IS BUMEDINST 6220.12D, MEDICAL SURVEILLANCE AND 
RESPONSE.//
POC/CDR LINDA SHARPE/CMC WASHINGTON DC (SD)/TEL: 703-571-6515/
TEL: DSN 664-6515/EMAIL: LINDA.D.SHARPE.MIL@USMC.MIL//
GENTEXT/REMARKS/1.This MARADMIN cancels MARADMIN 111/15.
This MARADMIN provides updated interim guidance for commanders 
(CDRs) and officers-in-charge (OICs) on planning and executing heat
and cold stress injury prevention measures.  This guidance remains
in effect until incorporated into reference (a) or until
superseded. CDRS and OICs will apply risk management principles from
reference (b) to implement injury prevention measures for all 
operational and training activities, in accordance With references
(c) through (e).
2.  Action
2.a.  CDRs and OICs
2.a.(1)  Implement the requirements of references (c) through (e) to 
reduce unnecessary risk.  Ensure all potentially exposed personnel 
receive training on the causes, prevention, and treatment of heat 
and cold stress injuries.  Training shall include the wet-bulb globe 
temperature (WBGT) index, work/rest cycles, flag warning systems 
and wind chill index.  Medical department personnel are available 
to assist with training.   Conduct refresher training at the 
discretion of the CDR/OIC and prior to exposure to hot or cold
environments.  Document training on attendance rosters.
Local policies shall not be less stringent than this guidance. 
2.a.(2)  Develop standard operating procedures (SOPs) for training 
and operations in hot and cold weather environments, including WBGT 
meter operations and maintenance per the manufacturer’s guidance.
2.a.(3)  Take WBGT readings in immediate areas of operations and 
communicate WBGT index readings and flag conditions to affected 
personnel.
2.a.(4)  Prior to training and operations, ensure personnel are
trained, acclimatized and equipped for hot or cold weather 
conditions.  
2.a.(4)(a)  Designate a sufficient number of trained personnel to
monitor training activities, assist stragglers, and transport heat
or cold stress casualties in properly equipped vehicles.
2.a.(4)(b)  Notify the supporting military treatment facility (MTF)
of the risk assessment and include the time and location of training
or operations.
2.a.(4)(c)  Ensure medical department personnel assigned to Marine
Corps units can respond rapidly to a heat or cold stress injuries 
and provide immediate intervention, including recognition, cooling 
or warming, and transport to nearest MTF.  
2.a.(4)(d)  Ensure personnel receive adequate fluid replacement, 
rest periods and water breaks during hot or cold weather training. 
Apply training guidelines in references (c) through (e).  Identify 
personnel with risk factors, including prior heat or cold stress 
symptoms or use of medications or dietary/fitness supplements.  
Ensure those individuals are evaluated and cleared by medical 
provider, and monitored by supervisors and buddies for heat or cold
stress symptoms.
2.a.(4)(e)  Personnel exposed to excessive heat stress may require 
evaluation by a qualified health care provider to determine the 
presence or absence of a heat-related injury.  If a heat-related
injury is identified, the health care provider shall notify the unit
safety representative or other designated command representative for
entry into the Risk Management Information (RMI) system.
2.a.(4)(f) All heat or cold injuries will be reported via RMI per
reference (b), and through the disease report system internet per 
reference (g). 
2.b.  Officers, staff noncommissioned officers, noncommissioned 
officers and other supervisors shall ensure Marines, Sailors, and 
civilian personnel are familiar with heat and cold stress injury 
prevention procedures.  Emphasize buddy aid-if an individual 
appears ill or otherwise unfit to participate, ensure they report 
to medical department personnel for assessment.
2.c.  Installation, base and station commanders
2.c.(1) Operate and maintain the WBGT meter per the manufacturer’s 
guidance. 
2.c.(2) Take WBGT readings in operational areas with potential heat
stress risk and display WBGT flags in accordance with references
(c) through (e).  
2.c.(3) Communicate WBGT index readings, flag conditions, and wind 
chill indexes to all tenant commands.
2.C.(4) Assist units in monitoring heat and cold stress conditions 
and provide WBGT loaner equipment as required.  Ensure SOPs exist
for the operation and maintenance of organic and loaner WBGT meters.
3.  Release authorized by Lieutenant General, Paul J. Rock, Jr.,
Director, Marine Corps Staff.//