Coal Purchase PWS_2 March 2023.pdf

Performance Work Statement Bituminous Stoker Coal

2 March 2023

GENERAL

1.1 SUMMARY OF WORK:

The contractor shall provide 1500 tons of Bituminous Stoker Coal 1 ½”x ¼” by railcar or truck to Malmstrom AFB Central Heating Plant. All coal shall be sprayed with non-oil based dust suppression. Contractor shall guarantee the coal will meet the provided specifications to be proven by a relative sample of 50 lbs per every 1000 tons produced to be tested by a laboratory.

1.2 Coal Specifications:

Contractor shall meet the required specifications:

1.2.1 Screen Size: 1 ½”- Max 30% retained on

¼”- Max 5% passing through

1.2.2 Moisture as received: 20% Max

1.2.3 Volatile Matter: 47% Max 33% Min

1.2.4 Fixed Carbon- 65% Max

1.2.5 Ash: 12% Max 3% Min

1.2.6 Sulfur: 1% Max

1.2.7 BTU, Dry: 12,000 BTU/LB Min

1.2.8 Ash Softening Temp.: 2100 degrees F.

1.2.9 Sodium Oxide: 3% Max (ASTM Test Method D3682 shall be used to test)

1.2.10 Mercury: .06 PPM Max

1.2.11 Non-oil based dust suppression (Chem-Loc 101 or equivalent) shall be applied to the coal

1.2.10.1 Contractor is responsible for ensuring that the dosage rate conforms to the conditions at the time as described in the current manufacture’s product bulletin.

1.3 Coal Testing:

Contractor shall take a relative 50 lb coal sample from every 1000 tons produced to be tested by a certified laboratory and results submitted to the government prior to delivery for approval. Testing shall include a minimum of the following as an as received and dry basis:

1.3.1 Proximate Analysis (%)

1.3.1.1 Moisture

1.3.1.2 Ash

1.3.1.3 Volatile Matter

1.3.1.4 Fixed Carbon

1.3.2 Fusion Temp of Ash (F)

1.3.2.1 Initial

1.3.2.2 Softening

1.3.2.3 Hemispherical

1.3.2.4 Fluid

1.3.3 Sulfur (%)

1.3.4 BTU/LB

1.3.5 Mercury (PPM)

1.3.6 Chlorine (PPM)

1.3.7 Sodium Oxide (%)

1.3.6.1 ASTM Test Method D3682

1.3.8 Sieve Analysis

1.3.8.1 Passing

1.3.8.2 Retained

1.3.8.3 Percent

1.4 Delivery:

Contractor shall delivery Bituminous Stoker Coal by truck.

1.4.1 Truck deliveries will be limited to Mon- Fri 0700- 1530 unless other arrangements can be made with government

1.5 Performance:

1.5.1 Period of performance will be May- September 2023.

1.5.2 Government may incur considerations in pricing or rejection of coal deliveries that are proven not to meet governments approved coal testing results.