Blast Resistant Modules
Hardened structures for oil, gas and petrochemical facilities, engineered to keep people protected and operations running when an explosion event occurs without warning.
What is a Blast-Resistant Module?
A Blast-Resistant Module (BRM) is a purpose-engineered structural unit designed to maintain its integrity — and protect its occupants — during an accidental explosion event at a process facility. Unlike conventional site cabins, every Mecton BRM is designed from the ground up to absorb and deflect overpressure loads defined by your site's risk assessment.
Our modules undergo rigorous physical blast testing and are rated to a Medium Response classification — sustaining 10 PSI at 200 milliseconds duration without structural failure or occupant injury. Each unit is designed in line with API RP 752 and API RP 753.
Every Function. Hardened.
From muster refuge to daily working office, Mecton delivers blast protection across your entire facility footprint.
Refuge Shelters & Bunkers
Primary muster-point protection engineered to keep personnel safe during blast events on hazardous process facilities.
Office Modules
Fully habitable hardened workspaces providing blast-resistant accommodation without compromising operational productivity.
Laboratories
Precision-engineered protected environments for analytical and testing operations in high-risk process zones.
Workshops
Heavy-duty hardened workshop facilities for maintenance operations in close proximity to live process equipment.
Security Buildings
Access control and guard facilities engineered for perimeter security in petrochemical and industrial plants.
Portable Storage
Protected storage for sensitive equipment and critical materials in hazardous operational environments.
Performance by the Numbers.
Built In, Not Bolted On.
Every Mecton BRM ships with the structural hardening and interior fit-out already built in — from steel-gauge wall panels to fire and life-safety systems — so the unit is ready to occupy the day it arrives on site.
- Steel floor, wall and ceiling members covered with minimum 10-gauge steel panels
- Two steel-reinforced doors
- ISO lift and tie-down points at each corner
- 9mm painted Calcium Silicate Board (CSB) wall lining and ceiling panels
- PVC vinyl flooring sheet
- Shielded fluorescent overhead lighting
- Rockwool insulation
- Standard RJ-45 / RJ-11 phone and Ethernet jacks
- Single multi-cable transit for incoming electrical and communication services
- HVAC system suitable for ambient use up to 52°C
- Smoke detectors and ABC fire extinguishers
- Exit signs with emergency lighting
12ft Wide Module — Layout Options.
Open Floor
One & Two Walls
One Wall with Restroom
Restroom
Standard 40ft x 12ft Module.
- 10 PSI at 200 ms blast-rated module
- Medium Response classification as per ASCE
- Approximate weight: 25,000 kg
- L 12.192 m x W 3.650 m x H 2.900 m
- All electrical fixtures mounted outside the module are Ex-rated
- All electrical fixtures inside the module are rated for safe-area use
- Primary members, walls, floor and roof engineered to withstand 10 PSI at 200 ms
- S355-grade steel used for the primary structure
- A36-equivalent grade steel used for secondary structure, wall plates, roof plates and floor plates
- Designed and manufactured to industry two-point lifting requirements
- Two 10 PSI blast-resistant exterior steel doors
- No windows fitted
- Walls, floor and roof insulated to achieve a one-hour fire rating
- Wall — 30 mm thick sandwich lining panels, secured to the steel structure with the necessary fixing profiles and fasteners
- Ceiling — 0.7 mm thick GI folded tray ceiling system, secured to the steel structure with the necessary fixing profiles and fasteners
- Floor — 12+18 mm thick cement fibre subfloor fixed to the structural steel, finished with a 2 mm vinyl mat and 100 mm high PVC skirting
- Not included
- Incoming power supply of 220–690V, 50/60Hz, 3 phase + N + E
- One 15kVA transformer included (3Ph 220–690V / 400V star, IP42; primary 220/400/440/460/480/690V 3P+N+E star, secondary 400V 3P+N+E star)
- One 40A incoming power isolator switch fitted outside the module
- One distribution board in a steel enclosure, 415V 3 phase + N
- Surface-mounted 18W LED ceiling lights
- Two 8W LED emergency exit lights
- Two Ex-rated external lights fitted above each door, switch-controlled from inside (end modules only)
- Seven 2G 13A 230V switched sockets
- One 1G 13A 230V socket
- Two 2G 2W 10A switches
- Internal circuit runs concealed within GI cable trunking
- Multicore PVC cabling sized to the detailed electrical design
- Three 2 x RJ45 connection data outlets
- One explosion-proof network junction box
- One 8-port patch panel
- Wall-mounted split AC (2-ton duty + 2-ton standby), indoor unit suitable for safe-area application, 220–240V/1Ph/50–60Hz supply
- Indoor unit houses two compressors and two direct-driven blower fans with CE-marked motors and a double-circuit evaporative coil
- Condenser fan and coil installed in an external recess area of the module; condenser fan is Ex-rated
- Evaporator and condenser coils constructed from copper tube with aluminium fins
- Two optical smoke detectors (conventional type)
- Two manual call points
- One fire alarm bell
- Fire alarm panel (conventional type)
- Not included
- Sandblasted to SA 2.5 (equivalent to SSPC 10)
- 1st coat: Barrier 86 or equal, 50µ DFT
- Final coat: Hard Top AS (white), 130µ DFT
- 1 coat Barrier 86 or equal, 50µ DFT
- All electrical equipment labelled
- Quality assurance system in conformity with ISO 9001
- Quality control and test reports provided with every unit